

thereishope
Members-
Posts
4,257 -
Joined
Content Type
Profiles
Forums
Blogs
Store
Events
Everything posted by thereishope
-
What every psychiatrist should know about PANDAS
thereishope replied to thereishope's topic in PANS / PANDAS (Lyme included)
So, how much time will you practice your "speech" to the psychiatrist? -
It sounds like he was told one thing,expected that to happen and when it didn't all heck broke loose. We had that here before. With that one, I didn't see a cause and effect. I just warned him a few days prior to a change and reminded him many times leading up to the change. As for probing, I agree you don't want to plant seeds. Even though my son is doing better, I am still cautious about that and I try to choose my words carefully. First, I would really think hard about what else sets him off or what he does at his own home that bothers him. If you tackle what bother him at home first that may cause a chain reaction into helping him in other situations. It sounds like it may be nothing at the friend's house he wants to avoid. It's just not what was suppose to happen. I would consider that OCD. It's up to you if you want to try to tackle it or if you want to give it more time in the healing process.
-
It sounds like it went well. I hope the plane ride was okay. Did you get everything in hard copy re the IVIG or is she emailing the doc? Hope the trip home goes well for you.
-
connecting the dots chx pox vaccine?
thereishope replied to earnestfamily7's topic in PANS / PANDAS (Lyme included)
When did the chicken pox vaccine become available? -
I agree that the cam number is not the end all. It is important to remember that it is still in a research stage. Remind me, did your child begin with a sudden onset or was he more chronic? If it was sudden onset was it correlated with an infection?
-
What every psychiatrist should know about PANDAS
thereishope replied to thereishope's topic in PANS / PANDAS (Lyme included)
I agree with Buster. His Fact Sheet is a must have in everyone's folder and available with you at every appt, even if you have given it to them already. I love the way that fact sheet is organized not to mention that there are additional studies in it. This article was written in 2008 and submitted in 2007. Even though it's good, more info is out there now than there was back then and some 2009 studies are cited in the fact sheet. -
During an exacerbation what were his OCD tendencies? Did he have any fears? Like you said there's an underlying issue. If you carefully pick at it you might find out what it is. -If he had a germ/dirt thing, well, the possibilities of the friend's house could be endless. -It could be something with a sibling, esp if the friend's sibling is a toddler. -If he feels he need to play with a certain toy every time the child is over, that could be it. -If he still hides OCD tendencies within your house, perhaps he is fearful he cannot complete them at the friend's house -It could simply be he does want to break routine. That would cause a meltdown with us during an exacerbation. -Does he go to school okay? It can just be so many reasons....
-
This article touches on a lot of things that are discussed in this forum and I think is worth reading. http://www.cpementalhealth.com/content/4/1/13 I will need to print it out and reread it tonight once the kids are in bed. The electronic version of this article is the complete one and can be found online at: http://www.cpementalhealth.com/content/4/1/13 Received: 2 October 2007 Accepted: 21 May 2008 Published: 21 May 2008 © 2008 Moretti et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract The term Pediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcus infections (PANDAS) was coined by Swedo et al. in 1998 to describe a subset of childhood obsessive-compulsive disorders (OCD) and tic disorders triggered by group-A beta-hemolytic Streptococcus pyogenes infection. Like adult OCD, PANDAS is associated with basal ganglia dysfunction. Other putative pathogenetic mechanisms of PANDAS include molecular mimicry and autoimmune-mediated altered neuronal signaling, involving calcium-calmodulin dependent protein (CaM) kinase II activity. Nonetheless the contrasting results from numerous studies provide no consensus on whether PANDAS should be considered as a specific nosological entity or simply a useful research framework. Herein we discuss available data that could provide insight into pathophysiology of adult OCD, or might explain cases of treatment-resistance. We also review the latest research findings on diagnostic and treatment. Introduction Several studies provide compelling evidence of cortico-subcortical involvement in the pathogenesis of obsessive-compulsive disorder (OCD) [1]. Data emerging from morphological and functional neuroimaging studies suggest specific alterations at the level of orbitofrontal-caudate-thalamic circuits [2,3]. Patients with adult-onset OCD often have a history of ischemic stroke or traumatic brain injury involving the basal ganglia [4-6]. Moreover, indirect evidence of basal ganglia involvement in OCD comes from observations that the symptoms of OCD regress after surgery for cingulotomy and capsulotomy, interventions that disconnect the frontal cortex from basal ganglia [7,8]. Despite advances in the knowledge of the pathogenesis of OCD, little is known about the causative mechanisms underlying specific alterations. Observations of patients with rheumatic fever who had Sydenham's chorea manifesting with classic OCD symptoms have suggested a possible etiological link between group A β-hemolytic streptococcus (GABHS) infection in a subset of OCD patients [9-11]. GABHS has also been implicated in the development of Tourette syndrome [12-14] and autism in children [15]. These clinical reports engendered considerable interest in a possible streptococcal-triggered etiology for OCD. In 1998 the National Institute of Mental Health instituted a research group that sought to characterize a subgroup of children with OCD and tic disorders (TD), namely "pediatric autoimmune neuropsychiatric disorders associated with streptococcal infections" (PANDAS) [16]. These investigators outlined diagnostic criteria, studied several candidate PANDAS patients and proposed a possible pathophysiologic mechanism according to which a susceptible host might produce antibodies against GABHS that cross-react with neuronal tissue [16]. This mechanism resembles what happens in GABHS post-infection sequelae glomerulonephritis and rheumatic fever. Evidence suggesting a possible association between OCD and GABHS infection also in adults, comes from three case reports describing the abrupt onset of OCD due to GABHS infection [17-19]. In all cases the infection and obsessive-compulsive symptoms both promptly responded to antibiotics. Recent evidence suggests that specific antibodies targeted to the dominant epitope of GABHS (N-acetyl-beta-D-Glucosamine) might influence neuronal signal transduction thus causing alterations in behavior and movement control. Accordingly, sera from some patients with Sydenham's chorea [20] or PANDAS [21] contain antibodies that induce calcium-calmodulin dependent protein (CaM) kinase II activity. Despite growing support for an association between GABHS and OCD, the causal relationship between GABHS infection and OCD, its pathophysiology, and its possible clinical implication remain highly controversial. In this paper we will review human studies aimed at verifying the PANDAS construct. Our review focuses primarily on the pathogenetic mechanisms underlying the development of PANDAS. An important unanswered question is whether some patients currently treated for OCD are actually undiagnosed PANDAS in childhood. Knowing more about the pathogenesis of PANDAS might improve our insight into pathogenetic mechanisms of treatment-resistant OCD. PANDAS: historical perspective In 1994 Susan E. Swedo reported the case of a 9-year-old girl with rheumatic chorea and OCD whose neuropsychiatric symptoms responded to plasma exchange [9]. In the ensuing years a growing interest focused on the neuropsychiatric features of rheumatic fever and reports described patients with Sydenham's chorea who in up to 70% of cases manifested obsessive-compulsive symptoms, apparently indistinguishable from those of classic OCD [9,10]. The relationship between GABHS and Sydenham's chorea has long been documented in the medical literature [22]: streptococcal peptides stimulate specific lymphocyte immune responses producing antibodies that might in turn cross-react with various host epitopes, through the mechanism known as molecular mimicry [23,24]. In analogy to Sydenham's chorea, infections with GABHS may trigger autoimmune responses that cause or exacerbate some cases of child-onset OCD, TD or Tourette syndrome [25]. The first systematic attempt to identify and define a nosological entity characterized by pediatric OCD or TD, triggered by an infection and with a supposed autoimmune pathogenesis, dates back to 1995. In this year Allen and co-workers described 4 patients in whom OCD or Tourette syndrome manifested or worsened after GABHS infection (two cases) and viral infection (two cases), and responded to treatment with plasmapheresis, intravenous immunoglobulin (IVIG) or immunosuppressive doses of prednisone [25]. To summarize the essential features of this subgroup of patients with OCD or TD, Allen et al. coined the acronym PITANDs (pediatric infection-triggered, autoimmune, neuropsychiatric disorders). As possible triggers of the neuropsychiatric manifestations they originally included along with GABHS infection, viral or other bacterial infections [25]. In a later study in 1998, Swedo et al. reappraised and extended the diagnostic criteria for PITANDS, no longer mentioned viral or other bacterial infections and hypothesized the existence of PANDAS [16]. They proposed five diagnostic criteria 1) the presence of OCD or a tic disorder or both, 2) pediatric onset, 3) episodic course of symptom severity with abrupt onset or dramatic symptom exacerbations, 4) temporal association with GABHS infection 5) and association with neurological abnormalities during symptom exacerbations [16]. Whereas the PITANDs hypothesis focused generally on a possible association between "an antecedent or concomitant infection" and neuropsychiatric manifestations, the diagnostic criteria for PANDAS were restricted to GABHS infection. In a systematic clinical evaluation of 50 children who met the diagnostic criteria for PANDAS, Swedo and colleagues found that these patients typically had a young age at illness onset, an abrupt onset of neuropsychiatric symptoms and frequently manifested neuropsychiatric comorbidities (attention deficit hyperactivity disorder 40%, major depressive disorder 36%, overanxious disorder 28%, separation anxiety disorder 20%, enuresis 12% [16]. GABHS infection preceded 45 (31%) of 144 exacerbations of TD or OCD. Moreover, the onset of behavioral symptoms (irritability, emotional lability, tactile/sensory defensiveness, motor hyperactivity, deterioration in handwriting) was typically associated with exacerbation of OCD or tics, triggered by GABHS infections [16], also in patients who had Sydenham's chorea [9]. Subsequent studies investigating the PANDAS hypothesis yielded controversial results. Some seemed to confirm the association between GABHS infection and OCD or TD exacerbations [26,27], whereas others failed [28,29]. Circumstantial evidence indicating PANDAS as an autoimmune disorder came also from the presence of anti-neuronal (anti-brain, anti-basal ganglia) antibodies in children with PANDAS [30-32] or children with Tourette syndrome [33-35]. Again other studies failed to identify significant differences into auto-antibody levels between patients with PANDAS and controls [36-38]. The discrepancies among the various researches presumably arise partly from methodological problems: for example, the use of rabbit neural antigens having low homology with the human isoforms instead of human antigens [38]. Strong support for PANDAS as an immune-mediated disorder comes from the excellent response of children with PANDAS to immunotherapies (plasma exchange and IVIG) [39]. Prompted by a report that antibiotic prophylaxis diminished recurrences of rheumatic fever, some investigated a possible analogous outcome in patients with PANDAS. The first trial with oral penicillin was unsuccessful [40]. Another prospective longitudinal trial of azithromycin or oral penicillin in 23 children with PANDAS showed that antibiotic prophylaxis, with both molecules, effectively decreased streptococcal infections and neuropsychiatric symptoms exacerbations among children with PANDAS [41]. Diagnostic issues As well as stimulating considerable attention the PANDAS hypothesis has generated controversy and skepticism. A major criticism is although the currently proposed diagnostic criteria focus on the occurrence, onset, severity and course of tic or obsessive compulsive symptoms they may fail to distinguish PANDAS from other phenotypes of OCD or tics, and to some degree even from Sydenham's chorea [42,43]. A childhood onset of symptoms (second criterion) may lack the specificity needed to distinguish PANDAS from Tourette syndrome, because in up to 75% of TD cases the manifestations begin during the prepubertal period [44]. Moreover, in a series of 80 patients with TD, 53% of the sample reported a sudden onset of illness [45]. Furthermore, the specificity of a sudden and dramatic onset (third criterion) for the PANDAS subgroup of OCD or TD or both has been questioned because some reports describe cases of sudden-onset of adult OCD or TD after GABHS [17,19,46,47]. Most children enrolled in PANDAS studies manifested several neuropsychiatric comorbidities especially attention deficit hyperactivity disorder, anorexia nervosa, dystonia, trichotillomania, major depressive disorder, or separation anxiety disorder [16,30,31,41]. Whether these manifestations are independent, secondary to the development of PANDAS or, at least in some cases, could share a common pathogenetic pathway is unclear. Obviously, the presence of neuropsychiatric comorbidities limits the discriminating specificity of the diagnostic criteria, but in childhood neuropsychiatric disorders this is the rule rather than the exception. The presence of neurological abnormalities (fourth criterion) has been often referred to as the presence of choreiform movements (reported in up to 95% of patients with PANDAS in the acute phase), hence becoming a specific criterion [16]. Those supporting the PANDAS hypothesis have been excluding choreic movements as possible neurological manifestation to avoid possible diagnostic overlap between PANDAS and Sydenham's chorea, who often present OCD or TD comorbidities [10,48]. Some authors suggested that the PANDAS subgroup could represent an attenuated form of Sydenham's chorea and that a dysfunction in the basal ganglia could be a common pathogenetic pathway between choreiform movements and overt chorea [42,49]. Subsequent studies nevertheless showed that choreiform movements (elicited exclusively by a clinician on a neurological examination disclosing stressed posture) could be reliably distinguished from choreatic movements (rapid, involuntary, continuously increasing arrhythmic movements that are present continuously and increase during unrelated voluntary movements) [49,50]. Finally the temporal association (fifth criterion) between GABHS infection, whose incidence in school-age children is high, and the onset or the exacerbation of neuropsychiatric symptoms does not necessarily mean causality, the question awaits an answer from further controlled prospective studies. Streptococci were initially associated with Kawasaki disease and Henoch-Schönlein purpura, but controlled studies eliminated bacteria as a causal factor [42]. Streptococci are not the only infectious agents implicated in Tourette syndrome, other pathogens putatively involved include Borrelia burgdorferi and Mycoplasma pneumoniae [51]. A recent study has shown that antibody test reactions for Mycoplasma pneumoniae differ significantly in patients with Tourette syndrome and healthy controls (59% vs. 3%) [51]. Even though most reports involve GABHS, these data suggest that the autoimmune process underlying post-infective autoimmune neuropsychiatric symptoms may be triggered not only by streptococci but also by other infectious agents. Physiopathology of GABHS infections GAHBS is a Gram-positive, extracellular bacterium of spherical to ovoid shape, and is one of the most frequent human pathogens. Several clinical manifestations have been associated with acute GABHS infections, including pharyngitis (strep throat), scarlet fever, impetigo and cellulitis [24]. GABHS produces several extracellular virulence factors including streptolysin S and O, hyaluronidase, opacity factor, NADase and M-like proteins. M protein is the major surface protein and occurs in more than 100 antigenically distinct types, being the basis for the serotyping of strains with specific antisera [24]. Bacterial cell wall M proteins have been found to mimic several cardiac proteins and the group-specific carbohydrate of GABHS resembles the glycoprotein of heart valves. Indirect evidence suggests that M6 and M19 proteins may share common epitopes with brain structures [52]. Group A streptococci also elaborate, to varying degrees, a polysaccharide capsule composed of hyaluronic acid. The description of new virulence factors, not present in the earlier strains, together with a significant increase in the incidence and severity of infections, has suggested that GABHS genome has re-arranged over time. Evidence in recent years suggests that new phage-encoded virulence factors will be identified by sequencing the genomes of additional GABHS strains [53]. An individual's vulnerability to infection-triggered autoimmune disorders depends crucially on genetics. Family-based studies support a genetic predisposition to rheumatic fever [54]. Rheumatic fever is an inflammatory disease that can involve heart, joints, skin and brain. Sydenham's chorea is the most frequent neurological manifestation of rheumatic fever and is characterized by rapid, uncoordinated jerking movements affecting primarily face, feet and hands. Rheumatic fever is believed to be caused by antibody cross-reactivity. This cross-reactivity is a Type II hypersensitivity reaction often referred to as molecular mimicry [54]. Substantial evidence argues for molecular mimicry also in Sydenham's chorea, and anti-GABHS antibodies could cross-react with neuronal tissue [54]. A pioneering study on children with Sydenham's chorea found that 46.6% of sera from 30 patients reacted with neuronal cytoplasm of human caudate and subthalamic nuclei and the presence of anti-neuronal antibody was associated with the severity and duration of clinical attacks [55]. Several subsequent studies investigated the presence of anti-neural or anti-brain antibodies in movement disorders. Antineural antibodies directed against caudate nuclei were found in 10 of 11 patients with Sydenham's chorea [56]. In a later study, Church and colleagues found higher titers of anti-basal ganglia antibodies in patients with acute Sydenham's chorea than in convalescent patients [57]. Antineuronal autoantibodies The presence of systemic anti-basal ganglia autoantibodies has been proposed as possible evidence for an immunological pathogenesis of a subset of OCD. The modulation of intracellular signalling pathways by autoantibodies has been described in myasthenia gravis [58] (autoantibodies to the acetylcholine receptor blocking neuromuscular transmission) and Graves disease [59] (autoantibodies against thyroid-stimulating hormone). Nonetheless basal ganglia, like most CNS structures, are relatively inaccessible to circulating antibodies owing to the presence of the blood-brain barrier (BBB). Although the mechanism by which circulating antibodies or cytokines might gain access to the CNS is unknown, with the exception of the circumventricular/lamina terminalis region, where the BBB is absent [60], a variety of hypothetic mechanisms exist. For example, circulating antibodies could reach the CNS if an inflammation of the meninges causes a local BBB breakdown. Cytokines, probably crossing the BBB at circumventricular organs, can trigger an immune activation on the CNS side of the BBB. Moreover, peripheral B cells that are cross-reactive to a CNS epitope may cause intrathecal production of antibodies [61]. To test the specificity of the association between anti-brain antibodies and the neuropsychiatric symptoms in PANDAS, Pavone and colleagues compared a group of PANDAS children with patients with uncomplicated (without neuropsychiatric manifestations) GABHS active infection [30]. They found a far higher incidence of anti-brain antibodies in serum from children with PANDAS than in those with active GABHS infection (64% vs. 9%) suggesting that the presence of anti-brain antibodies could not be accounted for by GABHS infection alone [30]. Further support for an immune-mediated pathogenesis of OCD in a subset of patients came from a study by Dale et al. that compared anti-basal ganglia antibody (ABGA) titers among patients with OCD and three control groups (neurological patients, uncomplicated GABHS infection, autoimmune disorders) and found significantly higher antibody expression in the OCD group (42% vs. 4%, 2%, and 10% in the three control groups) [31]. In the same study the authors found that the mean CY-BOCS score in the antibody-negative patients was higher than in the antibody-positive patients, and the latter had lower obsessions of hoarding/saving [31]. Others nevertheless also found anti-brain antibodies in healthy controls [14,33]. Two successive studies found no significant differences for ABGA immunoreactivity between patients with PANDAS vs. controls [36] and between children who met PANDAS criteria and two control groups (healthy controls and patients with TD) [37]. These discrepancies in autoantibody findings could reflect the methods used for antibody detection: enzyme-linked immunosorbent assay (ELISA) and western blotting which can alter the conformation of the antigens and could therefore affect antibody-antigen interactions [31]. Despite existing evidence of brain-specific antibody reactivity, and the isolation of antibodies against basal ganglia evoked by streptococcal cell wall, the mechanism by which molecular mimicry results in a behavioral or movement alteration is still unclear. Recent work by Kirvan and colleagues suggests that the pathogenesis of PANDAS and Sydenham's chorea might involve immune-mediated altered neuronal signaling [20,21]. These investigators first demonstrated that monoclonal antibodies derived from patients with acute Sydenham's chorea and targeted to N-acetyl-beta-D-glucosamine (GlcNAc), the dominant epitope of GABHS, reacted with human lysoganglioside GM1. This lysoganglioside influences neuronal signal transduction [62]. Moreover the autoantibody 24.3.1, from sera of patients with acute Sydenham's chorea induced CaM kinase II activity, whereas serum obtained from convalescent patients did not [20]. A recent work from the same group reported that antibodies which react with lysoganglioside GM1 and induce CaM kinase II activation in neuronal cells are present in PANDAS [21]. Using competitive-inhibition ELISA Kirvan et al. found that soluble lysoganglioside GM1 inhibited 73% of sera from patients with PANDAS binding to GlcNAc (conjugated to bovine serum albumin) but only 23% of sera from controls (OCD, tic disorders, attention deficit hyperactivity disorder, patients not meeting PANDAS criteria) [21]. Moreover, using human neuroblastoma cell cultures, they showed that PANDAS sera specifically induced antibody-mediated activation of CaM kinase II (75% percent of acute PANDAS sera), the degree of activation being superior to non-PANDAS sera and inferior to chorea sera. PANDAS sera depleted of IgG did not activate CaM kinase II. Notably the degree of activation of CaM kinase II was highest in PANDAS patients with isolated tics. Current data emerging for patients with chorea, PANDAS and OCD seem to suggest that CaM kinase II could be an intracellular mediator of behavioral and motor manifestations in some neuropsychiatric disorders. Along a continuum of activation from low levels (e.g. non-PANDAS OCD) to extremely high levels (rheumatic chorea), CaM kinase II activity seems to be associated in non-PANDAS OCD with simple neuropsychiatric manifestations and in rheumatic chorea with frank motor alterations. No studies have yet shown whether the physiological systems activating this signal cascade interact with possible disease-related (autoimmune ?) triggers. If they do, these interactions could be a new target for possible pharmacological approaches in disorders such as OCD and choreiform disorders. Peripheral markers The research for a possible susceptibility marker for PANDAS mostly focused on identifying peripheral markers. Among proposed peripheral markers of PANDAS susceptibility is monoclonal antibody directed against a non-HLA B-cell marker known as D8/17. This antibody is an IgM first isolated from fusions of spleen cells from mice that had been repeatedly immunized with human B-cells from patients with confirmed rheumatic fever [63,64]. In a study investigating D8/17 in PANDAS, Swedo and colleagues compared 27 children who met the diagnostic criteria with 9 patients with Sydenham's chorea and 24 healthy controls, and found a significantly higher percentage of B cells that bind D8/17 monoclonal antibody in children with both diseases than in controls (89% in Sydenham's chorea, 85% in PANDAS, 17% in controls) [65]. Another study of patients with child-onset OCD or Tourette disorder found 100% positive reactions for D8/17 in patients compared with 5% in the control group [13]. Subsequent studies investigated D8/17 positive B-cells in obsessive-compulsive spectrum disorders, as well as in other neuropsychiatric disorders. High percentages of B-cells expressing D8/17 were found in patients with autism (78%) [15], anorexia nervosa (100%–81%) [66,67], adult OCD (59%–92%) [68,69], tics (61%) [70] and trichotillomania (59%) [68]. Recent studies that used more accurate methods (flow cytometry) nevertheless failed to replicate these results [71,72]. This discrepancy may be due, at least in part, to the difference in the methods used in these studies, but also to the molecular characteristics of the antibody. The antibody that binds to D8/17 is an IgM, known to be relatively unstable and difficult to purify. Preliminary evidence suggests that D8/17 antigen immunoreactivity may reflect different psychopathological characteristics among patients with obsessive-compulsive spectrum. In a study on repetitive behaviors in autism Hollander and colleagues investigated the presence of D8/17 antigen in a sample of 18 children with autism. They found that the D8/17-positive patients had significantly higher mean children Yale-Brown obsessive compulsive scale (CY-BOCS) compulsion scores than the D8/17-negative patients [15]. These results suggest that psychopathological characteristics could differ in the various clinical subgroups of patients with OCD according to the underlying pathogenetic mechanisms. Neuroimaging In recent years, evidence arising from morphological and functional neuroimaging studies have linked OCD with dysfunction in frontal-subcortical circuits. Strong evidence exists of orbitofrontal cortex involvement but other areas implicated in the pathogenesis of OCD include the anterior cingulate gyrus, amygdala, insula, thalamus, striatum, lateral frontal and temporal cortices [1-3]. Several studies with positron emission tomography (PET) reported increased glucose metabolism in the orbitofrontal cortex, caudate, thalamus, prefrontal cortex and anterior cingulate among patients with OCD [73-75]. Current knowledge on the pathophysiology of OCD, despite suggesting an involvement of discrete brain regions, is far from concluding that these abnormalities are the cause of OCD or just an epiphenomenon [2]. In 1996 Giedd et al. first described an association between abrupt exacerbation of OCD symptoms after GABHS infection and an enlargement of basal ganglia [76]. Relatively few imaging studies have investigated CNS alterations in SC, most studies found no pathological changes on MRI. An MRI study of 24 children with SC, however, found volumetric abnormalities in caudate, putamen and globus pallidus [77]. Another study in a patient with Sydenham's chorea detected striatal abnormalities (increased signal intensity on T2-weighted images involving the putamen, globus pallidus, and the head of the caudate nucleus bilaterally) that reversed after recovery [78]. A subsequent longitudinal study with MRI compared 34 patients who met PANDAS criteria with 82 healthy controls and found a significant enlargement of caudate, putamen and globus pallidus in the patients [79]. Interestingly, immunomodulatory treatment (plasma exchange and IVIG) normalized this difference, suggesting that basal ganglia abnormalities are reversible. The same study found no correlation between symptom severity and basal ganglia volume [79]. Further longitudinal studies monitoring the CNS changes such as autoimmune vasculitis and edema and OCD symptoms that are supposed to follow GABHS infection are needed to assess a possible causal role and the involvement of specific CNS regions [80]. Therapeutic strategies The neurobiological mechanisms underlying the pathophysiology of OCD remain an intense area of research. One of the most accepted theories supports an alteration of serotonergic brain pathways, mainly because serotonin reuptake inhibitors achieve better clinical efficacy than other pharmacotherapeutic agents [81]. Double-blind, placebo-controlled trials have shown the efficacy of clomipramine and selective serotonin reuptake inhibitors (SSRI) in the treatment of adult OCD [81]. Although fewer, but consistent observations, suggest that clomipramine and SSRI may be equally effective in the treatment of childhood OCD, only clomipramine, fluvoxamine and sertraline have been approved by the FDA for child and adolescent OCD. Several lines of evidence indicate that an optimal treatment for OCD is combined pharmacotherapy and cognitive behavioral therapy (CBT) [82]. Despite the advances in pharmacological and psychotherapeutic approaches, up to 40–60% of treated patients are still non-responders or their response is unsatisfactory [83]. Some reports suggest that OCD or tics manifesting in patients with PANDAS respond to serotonergic drugs and combined therapy [84]. CBT and serotonergic drugs have proven efficacy, whether or not the symptomatology is triggered by a GABHS infection. Even in the PANDAS subgroup many patients have an unsatisfactory response. The true percentage of non-responders remains difficult to define but probably approaches that in the non-PANDAS subgroup. When standard treatments fail and symptoms are severe and disabling, Swedo and colleagues proposed immunomodulatory interventions, tailored to the presumed pathophysiology [84]. In a longitudinal double-blind placebo-controlled trial of 29 children with PANDAS, plasma exchange, IVIG or sham IVIG proved better than placebo in reducing OCD symptoms at 1-month follow-up (58% improvement with plasma exchange, 45% with IVIG) and tics (49% improvement with plasma exchange, 19% with IVIG) as measured by CY-BOCS and Tourette syndrome unified rating scale [39]. The improvements remained stable at 1 year follow-up, and were all statistically significant (p < 0.05) with the exception of tics in the group treated with IVIG. Whereas standard therapies (SSRI, cognitive behavioral therapy) have proved efficacious in the PANDAS subset of OCD and TD, immunotherapies were ineffective in children with resistant OCD without a history of GABHS infection [85], suggesting that immunotherapy is specific for PANDAS thus supporting the presumed pathophysiology. In a prospective longitudinal study 12 children who met the diagnostic criteria for PANDAS, were treated with penicillin or amoxicillin (5 patients), amoxicillin and clavulanate (1 patient), or cephalosporin (6 patients) during acute exacerbation of neuropsychiatric symptoms. In all patients antibiotic therapy effectively resolved OCD, the anxiety symptoms and tics within on average 14 days [26]. Penicillin prophylaxis has proven effective in preventing recurrences of rheumatic fever, and the American Heart Association recommend the use of oral penicillin 250 mg twice a day for prevention [86]. Because of the hypothesized pathophysiologic similarities between Sydenham's chorea and PANDAS some have argued that penicillin prophylaxis would also reduce neuropsychiatric exacerbations in children with PANDAS. In the first controlled trial on antibiotic prophylaxis for PANDAS, 37 children who had been previously diagnosed as PANDAS, were randomized to 4 months of penicillin V (twice daily oral 250 mg) followed by 4 months of placebo, or placebo followed by penicillin. In this study oral penicillin failed to provide adequate prophylaxis for GABHS and subsequently for neuropsychiatric symptoms exacerbations [40]. In a subsequent randomized trial Snider and colleagues tried to determine whether the negative results from Garvey were due to inefficacious prophylaxis against GABHS infection, and not to a lack of association between GABHS infection and neuropsychiatric symptoms. The study compared penicillin, considered as an "active placebo", with azithromycin, a drug that had proved efficacious against GABHS infections. In contrast to previous studies, penicillin and azithromycin both effectively decreased GABHS infections and neuropsychiatric exacerbations. The authors therefore concluded that antibiotic prophylaxis may be useful in the management of children with PANDAS [41]. Others later pointed out that the study had several limitations: the small sample size, the use of an "active placebo" and the retrospective methodology used to collect clinical data (symptoms severity, previous GABHS infections) regarding the year before patients were included in the study [87,88]. More important, many patients had neuropsychiatric comorbidities (as in all PANDAS studies) and the study design failed to consider concomitant pharmacological treatments as possible sources of confounding. Current knowledge therefore seems insufficient to support routine antibiotic prophylaxis for the symptoms of PANDAS. Conclusion Despite the encouraging results from recent studies that tested a possible autoimmune pathogenesis of PANDAS also at an intracellular level, and found in CaM kinase II a possible mediator of neuropsychiatric symptoms in this subset of OCD or TD patients, the validity of this nosologic entity is still questioned. The presence of anti-brain antibodies in a subset of patients with OCD, the promising results from immunomodulatory treatment in PANDAS and the possible association between some upper respiratory infections and the sudden onset of OCD, suggest a supportive role for immune triggers in some OCD subtypes. A research area that deserves further investigation regards the possible differences in the psychopathological characteristics of autoimmune-induced and non-autoimmune-induced OCD. Our findings in this review apart from confirming PANDAS as a distinct clinical entity, suggest that PANDAS is a useful research field that could open new insights into the pathogenesis of OCD, even in adults. Abbreviations BBB: blood-brain barrier BBB; CaM kinase II: calcium-calmodulin dependent protein kinase II; CY-BOCS: children Yale-Brown obsessive compulsive scale; GABHS: group A β-hemolytic streptococcus; IVIG: intravenous immunoglobulin; OCD: obsessive-compulsive disorder; PANDAS: pediatric autoimmune neuropsychiatric disorders associated with streptococcal infections; TD: tic disorder Competing interests The authors declare that they have no competing interests. Authors' contributions GM, MP, GM, LT and MB conceived the manuscript and drafted it. All authors read and approved the final manuscript. References Saxena S, Bota RG, Brody AL: Brain-behavior relationships in obsessive-compulsive disorder. Semin Clin Neuropsychiatry 2001, 6:82-101. PubMed Abstract | Publisher Full Text Return to text Whiteside SP, Port JD, Abramowitz JS: A meta-analysis of functional neuroimaging in obsessive-compulsive disorder. Psychiatry Res 2004, 132:69-79. PubMed Abstract | Publisher Full Text Return to text Remijnse PL, Nielen MM, van Balkom AJ, Cath DC, van Oppen P, Uylings HB, Veltman DJ: Reduced orbitofrontal-striatal activity on a reversal learning task in obsessive-compulsive disorder. Arch Gen Psychiatry 2006, 63:1225-1236. PubMed Abstract | Publisher Full Text Return to text Chacko RC, Corbin MA, Harper RG: Acquired Obsessive-Compulsive Disorder Associated With Basal Ganglia Lesions. J Neuropsychiatry Clin Neurosci 2000, 12:269-272. PubMed Abstract | Publisher Full Text Return to text Carmin CN, Wiegartz PS, Yunus U, Gillock KL: Treatment of late-onset OCD following basal ganglia infarct. Depress Anxiety 2002, 15:87-90. PubMed Abstract | Publisher Full Text Return to text Coetzer BR: Obsessive-compulsive disorder following brain injury: a review. Int J Psychiatry Med 2004, 34:363-377. PubMed Abstract | Publisher Full Text Return to text Dougherty DD, Baer L, Cosgrove GR, Cassem EH, Price BH, Nierenberg AA, Jenike MA, Rauch SL: Prospective long-term follow-up of 44 patients who received cingulotomy for treatment-refractory obsessive-compulsive disorder. Am J Psychiatry 2002, 159:269-275. PubMed Abstract | Publisher Full Text Return to text Rauch SL: Neuroimaging and Neurocircuitry models pertaining to the neurosurgical treatment of psychiatric disorder. Neurosurg Clin N Am 2003, 14:213-223. PubMed Abstract | Publisher Full Text Return to text Swedo SE: Sydenham's chorea: a model for childhood autoimmune neuropsychiatric disorders. JAMA 1994, 272:1788-91. PubMed Abstract | Publisher Full Text Return to text Asbahr FR, Negrao AB, Gentil V, Zanetta DM, da Paz JA, Marques-Dias MJ, Kiss MH: Obsessive-compulsive and related symptoms in children and adolescents with rheumatic fever with and without chorea: a prospective 6-month study. Am J Psychiatry 1998, 155:1122-1124. PubMed Abstract | Publisher Full Text Return to text Kim SW, Grant JE, Kim SI, Swanson TA, Bernstein GA, Jaszcz WB, Williams KA, Schlievert PM: A possible association of recurrent streptococcal infections and acute onset of obsessive-compulsive disorder. J Neuropsychiatry Clin Neurosci 2004, 16:252-260. PubMed Abstract | Publisher Full Text Return to text Kiessling LS, Marcotte AC, Culpepper L: Antineuronal antibodies in movement disorders. Pediatrics 1993, 92:39-43. PubMed Abstract Return to text Murphy TK, Goodman WK, Fudge MW, Williams RC Jr, Ayoub EM, Dalal M, Lewis MH, Zabriskie JB: B lymphocyte antigen D8/17: a peripheral marker for childhood onset obsessive-compulsive disorder and Tourette's syndrome? Am J Psychiatry 1997, 154:402-407. PubMed Abstract | Publisher Full Text Return to text Morshed SA, Parveen S, Leckman JF, Mercadante MT, Bittencourt Kiss MH, Miguel EC, Arman A, Yazgan Y, Fujii T, Paul S, Peterson BS, Zhang H, King RA, Scahill L, Lombroso PJ: Antibodies against neural, nuclear, cytoskeletal and adults with Tourette's syndrome, Sydenham's chorea, and autoimmune disorders. Biol Psychiatry 2001, 50:566-577. PubMed Abstract | Publisher Full Text Return to text Hollander E, DelGiudice-Asch G, Simon L, Schmeidler J, Cartwright C, DeCaria CM, Kwon J, Cunningham-Rundles C, Chapman F, Zabriskie JB: B lymphocyte antigen D8/17 and repetitive behaviors in autism. Am J Psychiatry 1999, 156:317-320. PubMed Abstract | Publisher Full Text Return to text Swedo SE, Leonard HL, Garvey M, Mittleman B, Allen AJ, Perlmutter S, Lougee L, Dow S, Zamkoff J, Dubbert BK: Pediatric autoimmune neuropsychiatric disorders associated with streptococcal infections: clinical description of the first 50 cases. Am J Psychiatry 1998, 155:264-271. PubMed Abstract | Publisher Full Text Return to text Monasterio E, Mulder RT, Marshall TD: Obsessive-compulsive disorder in post-streptococcal infection. Aust N Z J Psychiatry 1998, 32:579-581. PubMed Abstract Return to text Greenberg BD, Murphy DL, Swedo SE: Symptom exacerbation of vocal tics and other symptoms associated with streptococcal pharyngitis in a patient with obsessive-compulsive disorder and tics. Am J Psychiatry 1998, 155:1459-1460. PubMed Abstract | Publisher Full Text Return to text Bodner SM, Morshed SA, Peterson BS: The Question of PANDAS in Adults. Biol Psychiatry 2001, 49:807-810. PubMed Abstract | Publisher Full Text Return to text Kirvan CA, Swedo SE, Heuser JS, Cunningham MW: Mimicry and autoantibody-mediated neuronal cell signaling in Sydenham chorea. Nat Med 2003, 9:914-920. PubMed Abstract | Publisher Full Text Return to text Kirvan CA, Swedo SE, Snider LA, Cunningham MW: Antibody-mediated neuronal cell signaling in behavior and movement disorders. J Neuroimmunol 2006, 179:173-179. PubMed Abstract | Publisher Full Text Return to text Kingston D, Glynn LE: Anti-streptococcal antibodies reacting with brain tissue. I. Immunofluourescent studies. Br J Exp Pathol 1976, 57:114-128. PubMed Abstract Return to text Zabriskie JB: Rheumatic fever: the interplay between host, genetics, and microbe. Circulation 1995, 71:1077-1086. Return to text Cunningham MW: Pathogenesis of group A streptococcal infections. Clin Microbiol Rev 2000, 13:470-511. PubMed Abstract | Publisher Full Text | PubMed Central Full Text Return to text Allen AJ, Leonard HL, Swedo SE: Case study: a new infection-triggered, autoimmune subtype of pediatric OCD and Tourette's syndrome. J Am Acad Child Adolesc Psychiatry 1995, 34:307-11. PubMed Abstract | Publisher Full Text Return to text Murphy ML, Pichichero ME: Prospective identification and treatment of children with pediatric autoimmune neuropsychiatric disorder associated with group A streptococcal infection (PANDAS). Arch Pediatr Adolesc Med 2002, 156:356-61. PubMed Abstract | Publisher Full Text Return to text Giulino L, Gammon P, Sullivan K, Franklin M, Foa E, Maid R, March JS: Is parental report of upper respiratory infection at the onset of obsessive-compulsive disorder suggestive of pediatric autoimmune neuropsychiatric disorder associated with streptococcal infection. J Child Adolesc Psychopharmacol 2002, 12:157-164. PubMed Abstract | Publisher Full Text Return to text Luo F, Leckman JF, Katsovich L, Findley D, Grantz H, Tucker DM, Lombroso PJ, King RA, Bessen DE: Prospective longitudinal study of children with tic disorders and/or obsessive-compulsive disorder: relationship of symptom exacerbations to newly acquired streptococcal infections. Pediatrics 2004, 113(6):578-585. Publisher Full Text Return to text Perrin EM, Murphy ML, Casey JR, Pichichero ME, Runyan DK, Miller WC, Snider LA, Swedo SE: Does group A beta-hemolytic streptococcal infection increase risk for behavioral and neuropsychiatric symptoms in children? Arch Pediatr Adolesc Med 2004, 15:848-56. Publisher Full Text Return to text Pavone P, Bianchini R, Parano E, Incorpora G, Rizzo R, Mazzone L, Trafiletti RR: Anti-brain antibodies in PANDAS versus uncomplicated streptococcal infection. Pediatr Neurol 2004, 30:107-10. PubMed Abstract | Publisher Full Text Return to text Dale RC, Heyman I, Giovannoni G, Church AW: Incidence of anti-brain antibodies in children with obsessive-compulsive disorder. Br J Psychiatry 2005, 187:314-319. PubMed Abstract | Publisher Full Text Return to text Morer A, Lazaro L, Sabater L, Massana J, Castro J, Graus F: Antineuronal antibodies in a group of children with obsessive-compulsive disorder and Tourette syndrome. J Psychiatr Res, in press. Return to text Singer HS, Giuliano JD, Hansen BH, Hallett JJ, Laurino JP, Benson M, Kiessling LS: Antibodies against human putamen in children with Tourette syndrome. Neurology 1998, 50:1618-1624. PubMed Abstract Return to text Hallett JJ, Harling-Berg CJ, Knopf PM, Stopa EG, Kiessling LS: Anti-striatal antibodies in Tourette syndrome cause neuronal dysfunction. J Neuroimmunol 2000, 111:195-202. PubMed Abstract | Publisher Full Text Return to text Wendlandt JT, Grus FH, Hansen BH, Singer HS: Striatal antibodies in children with Tourette's syndrome: multivariate discriminant analysis of IgG repertoires. J Neuroimmunol 2001, 119:106-113. PubMed Abstract | Publisher Full Text Return to text Singer HS, Loiselle CR, Lee O, Minzer K, Swedo S, Grus HF: Anti-basal ganglia antibodies in PANDAS. Mov Disord 2004, 19:406-415. PubMed Abstract | Publisher Full Text Return to text Singer HS, Hong JJ, Yoon YD, Williams NP: Serum autoantibodies do not differentiate PANDAS and Tourette syndrome from controls. Neurology 2005, 65:1701-1707. PubMed Abstract | Publisher Full Text Return to text Dale RC, Church AJ, Candler PM, Chapman M, Martino D, Giovannoni G: Serum autoantibodies do not differentiate PANDAS and Tourette syndrome from controls. Neurology 2006, 66:1612. PubMed Abstract | Publisher Full Text Return to text Perlmutter SJ, Leitman SF, Garvey MA, Hamburger S, Feldman E, Leonard HL, Swedo SE: Therapeutic plasma exchange and intravenous immunoglobulin for obsessive-compulsive disorder and tic disorders in childhood. Lancet 1999, 354:1153-1158. PubMed Abstract | Publisher Full Text Return to text Garvey MA, Perlmutter SJ, Allen AJ, Hamburger S, Lougee L, Leonard HL, Witowski ME, Dubbert B, Swedo SE: A pilot study of penicillin prophylaxis for neuropsychiatric exacerbations triggered by streptococcal infections. Biol Psychiatry 1999, 45:1564-1571. PubMed Abstract | Publisher Full Text Return to text Snider LA, Lougee L, Slatterly M, Grant P, Swedo SE: Antibiotic prophylaxis with Azithromycin or Penicillin for Childhood-Onset Neuropsychiatric Disorders. Biol Psychiatry 2005, 57:788-792. PubMed Abstract | Publisher Full Text Return to text Kurlan R: The PANDAS hypothesis: losing its bite? Mov Disord 2004, 19:371-374. PubMed Abstract | Publisher Full Text Return to text Kurlan R, Kaplan EL: The pediatric autoimmune neuropsychiatric disorders associated with streptococcal infection (PANDAS). Etiology for Tics and Obsessive-compulsive symptoms: hypothesis or entity? Pratical consideration for clinician. Pediatrics 2004, 113:883-886. PubMed Abstract | Publisher Full Text Return to text Singer HS, Walkup JT: Tourette syndrome and other tic disorders. Diagnosis, pathophysiology, and treatment. Medicine (Baltimore) 1991, 70:15-32. PubMed Abstract Return to text Singer HS, Giuliano JD, Zimmerman AM, Walkup JT: Infection: a stimulus for Tic Disorders. Pediatr Neurol 2000, 22:380-383. PubMed Abstract | Publisher Full Text Return to text Greenberg BD, Murphy DL, Swedo SE: Symptom exacerbation of vocal tics and other symptoms associated with streptococcal pharyngitis in a patient with obsessive-compulsive disorder and tics. Am J Psychiatry 1998, 155:1459-1460. PubMed Abstract Return to text Martinelli P, Ambrosetto G, Minguzzi E: Late-onset PANDAS syndrome with abdominal muscle involvement. Eur Neurol 2002, 48:49-51. PubMed Abstract | Publisher Full Text Return to text Mercadante MT, Busatto GF, Lombroso PJ, Prado L, Rosario-Campos MC, do Valle R, Marques-Dias MJ, Kiss MH, Leckman JF, Miguel EC: The psychiatric symptoms of rheumatic fever. Am J Psychiatry 2000, 157:2036-2038. PubMed Abstract | Publisher Full Text Return to text Swedo SE, Leonard HL, Rapoport JL: The pediatric autoimmune neuropsychiatric disorders associated with streptococcal infection (PANDAS) subgroup: separating fact from fiction. Pediatrics 2004, 113:907-911. PubMed Abstract | Publisher Full Text Return to text Murphy TK, Snider LA, Mutch PJ, Harden E, Zaytoun A, Edge PJ, Storch EA, Yang MC, Mann G, Goodman WK, Swedo SE: Relationship of movements and behaviors to Group A Streptococcus infections in elementary school children. Biol Psychiatry 2007, 61:279-284. PubMed Abstract | Publisher Full Text Return to text Muller N, Riedel M, Blendinger C, Oberle K, Jacobs E, Abele-Horn M: Mycoplasma pneumoniae infection and Tourette's syndrome. Psychiatry Res 2004, 129:119-125. PubMed Abstract | Publisher Full Text Return to text Bronze MS, Courtney HS, Dale JB: Epitopes of group A streptococcal M protein that evoke cross-protective local immune responses. J Immunol 1992, 148:888-893. PubMed Abstract | Publisher Full Text Return to text Banks DJ, Beres SB, Musser JM: The fundamental contribution of phages to GAS evolution, genome diversification and strain emergence. Trends Microbiol 2002, 10:515-521. PubMed Abstract | Publisher Full Text Return to text Guilherme L, Fae KC, Oshiro SE, Tanaka AC, Pomerantzeff PM, Kalil J: T cell response in rheumatic fever: crossreactivity between streptococcal M protein peptides and heart tissue proteins. Curr Protein Pept Sci 2007, 8:39-44. PubMed Abstract | Publisher Full Text Return to text Husby G, Rijn I, Zabriskie JB, Abdin ZH, Williams RC Jr: Antibodies reacting with cytoplasm of subthalamic and caudate nuclei neurons in chorea and acute rheumatic fever. J Exp Med 1976, 144:1094-110. PubMed Abstract | Publisher Full Text | PubMed Central Full Text Return to text Swedo SE, Leonard HL, Schapiro MB, Casey BJ, Mannheim GB, Lenane MC, Rettew DC: Sydenham's chorea: physical and psychological symptoms of St Vitus dance. Pediatrics 1993, 91:706-713. PubMed Abstract Return to text Church AJ, Cardoso F, Dale RC, Lees AJ, Thompson EJ, Giovannoni G: Anti-basal ganglia antibodies in acute and persistent Sydenham's chorea. Neurology 2002, 59:227-231. PubMed Abstract | Publisher Full Text Return to text Drachman DB: Myasthenia gravis. N Engl J Med 1994, 23:1797-810. Publisher Full Text Return to text Kohn LD, Kosugi S, Ban T, Saji M, Ikuyama S, Giuliani C, Hidaka A, Shimura H, Akamizu T, Tahara K, et al.: Molecular basis for the autoreactivity against thyroid stimulating hormone receptor. Int Rev Immunol 1992, 9:135-165. PubMed Abstract | Publisher Full Text Return to text Gross PM: Circumventricular organ capillaries. Prog Brain Res 1992, 91:219-233. PubMed Abstract Return to text Knopf PM, Harling-Berg CJ, Cserr HF, Basu D, Sirulnick EJ, Nolan SC, Park JT, Keir G, Thompson EJ, Hickey WF: Antigen-dependent intrathecal antibody synthesis in the normal rat brain: tissue entry and local retention of antigen-specific B cells. J Immunol 1998, 161:692-701. PubMed Abstract | Publisher Full Text Return to text Hannun YA, Bell RM: Lysosphingolipids inhibit protein kinase C: implications for the sphingolipidoses. Science 1987, 235:670-674. PubMed Abstract | Publisher Full Text Return to text Khanna AK, Buskirk DR, Williams RC Jr, Gibofsky A, Crow MK, Menon A, Fotino M, Reid HM, Poon-King T, Rubinstein P, Zabriskie JB: Presence of a non-HLA B cell antigen in rheumatic fever patients and their families as defined by a monoclonal antibody. J Clin Invest 1989, 83:1710-1716. PubMed Abstract | Publisher Full Text | PubMed Central Full Text Return to text Feldman BM, Zabriskie JB, Silverman ED, Laxer RM: Diagnostic use of B-cell alloantigen D8/17 in rheumatic chorea. J Pediatr 1993, 123(1):84-86. PubMed Abstract | Publisher Full Text Return to text Swedo SE, Leonard HL, Mittleman BB, Allen AJ, Rapoport JL, Dow SP, Kanter ME, Chapman F, Zabriskie J: Identification of children with pediatric autoimmune neuropsychiatric disorders associated with streptococcal infections by a marker associated with rheumatic fever. Am J Psychiatry 1997, 154:110-112. PubMed Abstract | Publisher Full Text Return to text Sokol MS: Infection-triggered anorexia nervosa in children: clinical description of four cases. J Child Adolesc Psychopharmacol 2000, 10:133-145. PubMed Abstract Return to text Sokol MS, Ward PE, Tamija M: D8/17 expression on B lymphocytes in anorexia nervosa. Am J Psychiatry 2002, 159:430-432. PubMed Abstract | Publisher Full Text Return to text Niehaus DJ, Knowles JA, van Kradenberg J, du Toit W, Kaminer D, Seedat S, Daniels W, Cotton M, Brink P, Beyers AD, Bouic P, Chapman F, Zabriskie JB, Stein DJ: D8/17 in obsessive-compulsive disorder and trichotillomania. S Afr Med J 1999, 89:755-6. PubMed Abstract Return to text Eisen JL, Leonard HL, Swedo SE, Price LH, Zabriskie JB, Chiang SY, Karitani M, Rasmussen SA: The use of antibody D8/17 to identify b cells in adults with obsessive-compulsive disorder. Psychiatry Res 2001, 104:221-225. PubMed Abstract | Publisher Full Text Return to text Hoekstra PJ, Bijzet J, Limburg PC, Steenhuis MP, Troost PW, Oosterhoff MD, Korf J, Kallenberg CG, Minderaa RB: Elevated D8/17 expression on B lymphocytes, a marker for rheumatic fever, measured with flow cytometry in tic disorder patients. Am J Psychiatry 2001, 158:605-610. PubMed Abstract | Publisher Full Text Return to text Weisz JL, McMahon WM, Moore JC, Augustine NH, Bohnsack JF, Bale JF, Johnson MB, Morgan JF, Jensen J, Tani LY, Veasy LG, Hill HR: D8/17 and CD19 expression on lymphocytes of patients with acute rheumatic fever and Tourette's disorder. Clin Diagn Lab Immunol 2004, 11:330-336. PubMed Abstract | Publisher Full Text | PubMed Central Full Text Return to text Morer A, Viñas O, Lázaro L, Bosch J, Toro J, Castro J: D8/17 monoclonal antibody: an unclear neuropsychiatric marker. Behav Neurol 2005, 16:1-8. PubMed Abstract | Publisher Full Text Return to text Baxter LR Jr, Phelps ME, Mazziotta JC, Guze BH, Schwartz JM, Selin CE: Local cerebral glucose metabolic rates in obsessive-compulsive disorder. A comparison with rates in unipolar depression and in normal controls. Arch Gen Psychiatry 1987, 44:211-218. PubMed Abstract Return to text Nordahl TE, Benkelfat C, Semple WE, Gross M, King AC, Cohen RM: Cerebral glucose metabolic rates in obsessive compulsive disorder. Neuropsychopharmacology 1989, 2:23-8. PubMed Abstract | Publisher Full Text Return to text Swedo SE, Pietrini P, Leonard HL, Schapiro MB, Rettew DC, Goldberger EL, Rapoport SI, Rapoport JL, Grady CL: Cerebral glucose metabolism in childhood-onset obsessive-compulsive disorder. Revisualization during pharmacotherapy. Arch Gen Psychiatry 1992, 49:690-694. PubMed Abstract Return to text Giedd JN, Rapoport JL, Leonard HL, Richter D, Swedo SE: Case study: acute basal ganglia enlargement and obsessive-compulsive symptoms in an adolescent boy. J Am Acad Child Adolesc Psychiatry 1996, 35:913-915. PubMed Abstract | Publisher Full Text Return to text Giedd JN, Rapoport JL, Kruesi MJ, Parker C, Schapiro MB, Allen AJ, Leonard HL, Kaysen D, Dickstein DP, Marsh WL, et al.: Sydenham's chorea: magnetic resonance imaging of the basal ganglia. Neurology 1995, 45:2199-2202. PubMed Abstract Return to text Traill Z, Pike M, Byrne J: Sydenham's chorea: a case showing reversible striatal abnormalities on CT and MRI. Dev Med Child Neurol 1995, 37:270-273. PubMed Abstract Return to text Giedd JN, Rapoport JL, Garvey MA, Perlmutter S, Swedo SE: MRI assessment of children with obsessive-compulsive disorder or tics associated with streptococcal infection. Am J Psychiatry 2000, 157:281-283. PubMed Abstract | Publisher Full Text Return to text Peterson BS, Leckman JF, Tucker D, Scahill L, Staib L, Zhang H, King R, Cohen DJ, Gore JC, Lombroso P: Preliminary findings of antistreptococcal antibody titers and basal ganglia volumes in tic, Obsessive-compulsive, and Attention-Deficit/Hyperactivity Disdorders. Arch Gen Psychiatry 2000, 57:364-372. PubMed Abstract | Publisher Full Text Return to text Pigott TA, Seay SM: A review of the efficacy of selective serotonin reuptake inhibitors in obsessive-compulsive disorder. J Clin Psychiatry 1999, 60:101-6. PubMed Abstract Return to text Biondi M, Picardi A: Increased maintenance of obsessive-compulsive disorder remission after integrated serotonergic treatment and cognitive psychotherapy compared with medication alone. Psychother Psychosom 2005, 74:123-128. PubMed Abstract | Publisher Full Text Return to text Kaplan A, Hollander E: A review of pharmacologic treatments for obsessive-compulsive disorder. Psychiatr Serv 2003, 54:1111-1118. PubMed Abstract | Publisher Full Text Return to text Swedo SE, Grant PJ: Annotation: PANDAS: a model for human autoimmune disease. J Child Psychol Psychiatry 2005, 46:227-234. PubMed Abstract | Publisher Full Text Return to text Nicolson R, Swedo SE, Lenane M, Bedwell J, Wudarsky M, Gochman P, Hamburger SD, Rapoport JL: An open trial of plasma exchange in childhood-onset obsessive-compulsive disorder without poststreptococcal exacerbations. J Am Acad Child Adolesc Psychiatry 2000, 39:1313-1315. PubMed Abstract | Publisher Full Text Return to text Dajani AS, Taubert KA, Wilson W, Bolger AF, Bayer A, Ferrieri P, Gewitz MH, Shulman ST, Nouri S, Newburger JW, Hutto C, Pallasch TJ, Gage TW, Levison ME, Peter G, Zuccaro G Jr: Prevention of bacterial endocarditis. Recommendations by the American Heart Association. JAMA 1997, 277:1794-801. PubMed Abstract | Publisher Full Text Return to text Budman C, Coffey B, Dure L, Gilbert D, Juncos J, Kaplan E, King R, Kurlan R, Lowe T, Mack K, Mink J, Schlaggar B, Singer H: Tourette's Syndrome Study Group: Regarding "antibiotic prophylaxis with azithromycin or penicillin for childhood-onset neuropsychiatric disorders". Biol Psychiatry 2005, 58:917. PubMed Abstract | Publisher Full Text Return to text Gilbert D: Regarding "Antibiotic prophylaxis with Azithromycin or Penicillin for Childhood-Onset Neuropsychiatric Disorders". Biol Psychiatry 2005, 58:916-919. PubMed Abstract | Publisher Full Text Return to text
-
Anesthesia and the Blood Brain Barrier
thereishope replied to familyof4's topic in PANS / PANDAS (Lyme included)
My son was fine immediately following surgery. He actually had an easy recovery. I think I only remember one person saying PANDAS symptoms began to resurface right after the child started to wake up. Who knows, maybe it's combo of the exposure to bacteria and anesthesia. Maybe there's no connection. I really don't know. You mean immediatley after??? or long term???? when my ds has had anything like that he is a mad man when coming out...i mean i've had to physically restrain him but it would go away in a few hours...they said that is just a side effect for some kids?? -
Anesthesia and the Blood Brain Barrier
thereishope replied to familyof4's topic in PANS / PANDAS (Lyme included)
I agree with that too. That the child is vulnerable to bacteria with both procedures. Like I said, I just try to cover all bases. In the future, if he should ever need dental work or surgery, it will just remind me to take a step back and think things through. It also reminds me to make sure he brushes his teeth so he doesn't need dental work and I don't have to cross that bridge. -
For my son there was no want need or desire to change. Because of that I did not give him options of what the goals would be like they do with CBT.I have to say that when I started trying to eliminate the remaining OCD I could tell that he was so close to full recovery, except for the OCD. the remaining PANDAS behavior we had seen were gone. I never did rewards with him. I did kind of what you are doing. I weaned him off the rituals, habits, etc. I warned him a day ahead what we would be tackling so he didn't feel blindsided. Sometimes, he even asked me to take a picture of him doing the ritual one last time. I didn't know if that was appropriate, but I figured if that helped him with closure, so be it. I tackled the problems I was involved in first since I was able to help control them better. And I tackled the ones that I believed would cause the least anxiety to eliminate first. It wasn't a cut and dry, "you need to do this" or "stop do it all together", but more like changing it up a bit or eliminating part of it. When the anxiety stopped occuring from it and he started to do it on his own without reminders, I knew it was time to take it to another level. It was very tendious process, but it worked for him. The thing with any therapy when it comes to OCD is you have to commit to it. The second you let your guard down and you give in to what you were tryng to eliminate, you probably lost all ground you had made. OCD feeds off of it. vickie - so how did you deal with the fact that the goals were not his? how did you get him to participate when he had no desire, thought or motivation to change? i've been able to do some things with my son just by making them part of the routine but i do get hung up on the fact that the goals are really not his so he has no motivation to work toward them. the potty has really been our main issue as far as this is concerned. he now goes at home, not at school. if he doesn't want to do it, no 'thing' or priviledge matters. i could go on and on about all the rewards that were left by the wayside when trying to potty train. nothing is as big as not doing it. i agree there has to be something but it's impossible for us to figure out. the only way i've been successful is by getting it into the routine. like now, we do a 'step' in the potty at school when i pick him up. i get worried that we're never getting to the end goal - he'll participate with the step but only so far. thanks
-
Anesthesia and the Blood Brain Barrier
thereishope replied to familyof4's topic in PANS / PANDAS (Lyme included)
I might have been the one who mentioned anesthesia. The only reason I suspected that as a possibilty for opening the BBB is the number of kids that had exacerbations following t and a along with the number of exacerbation people have mentioned after receiving laughing gas at the dentists offcie. I don't know if there is a connection, but that seems to be a similar factor that appeared with some kids and exacerbations. I just try to find what may cause relapses (whether if only in theory) to try to prevent it occurring in my son again. -
connecting the dots chx pox vaccine?
thereishope replied to earnestfamily7's topic in PANS / PANDAS (Lyme included)
My child got the chicken pox too from the vaccine. Here's a thread where I asked others' their experience with it... http://www.latitudes.org/forums/index.php?...ic=4873&hl= In regards to growth, my son's growth was never affected. He was always above the 90th percentile for height and he's about 25-40% for weight. (higher than that as a baby).He follows the same the curve s his older brother. -
dcmom, My son was very resistent to therapy. He couldn't do CBT because to him nothing was wrong. I ended up learning tactics on my own, charted improvement on a charts provided by the therapist, and reported back to her once a month until he was better. I was the therapist. It actually was me meeting alone with her every month for one on one. So, if your daughter wouldn't cooperate with in-office stuff, it doesn't mean there's no hope. But when you decide to start, make sure you are ready too. It takes devotion from the parent for it to succeed. There were times when I put off tackling another OCD habit because I needed a break from the impending anxiety I knew would occur.
-
I THINK I WAS GIVEN FALSE HOPE
thereishope replied to bubbasmom's topic in PANS / PANDAS (Lyme included)
This where I got my info from at PANDAS Network... http://www.pandasnetwork.org/prognosis.html "Most children outgrow PANDAS at puberty (ages 12 to 15). It is not clear entirely why this occurs. Experts know that Group A (GABHS) infections fall off around age 16. It may be that after exposure to multiple strains throughout childhood a natural immunity to strep infections builds. Our group has talked to several PANDAS families whose daughters, at the onset of menses – have suddenly stopped having any PANDAS symptoms. There are reports of several boys – at age 13 or so, who have stopped having PANDAS symptoms as well. However: about 2-5% of children never develop these protective antibodies and remain susceptible to strep. If parents have strep infections as adults, it is more likely that child will remain susceptible as well." ...More info inbetween ... "What about Prophylactic Antibiotics – How long should my child stay on them? The current guideline from the NIMH is: PANDAS children should continue until age 18 to 21 years of age as prescribed by the American Academy of Pediatrics for Rheumatic Fever and Sydenham Chorea. At which time it is presumed the child has built up a proper immune response. In the Current Group of PANDAS cases approx. 10% of the children recovered after several weeks or several months of symptoms. They remained on prophylactic antibiotics (up to 1 year) and had a complete cessation of symptoms and the parents have taken the children off antibiotics. If the child has a reoccurrence of symptoms they will begin antibiotics again. The other approx. 15% are continuing on daily prophylactic antibiotics beyond 6 mos. as their children still have low level anxiety, mild ocd/tics, and hyperactivity and are deciding if their children's condition is manageable or not.Finally, there is the another 15% of the group that has gradually outgrown PANDAS at puberty and are now between 14-18 years old. They only remained on antibiotics throughout childhood with no IVIG or Plasma Exchange to lessen severity. Most of the parents have said their childhood was challenging and difficult on the family life. Their children had to be in special IEP classes in Grade School. Their doctors gave antibiotics periodically when strep was in the household or classroom environment or if they got a strep infection. They are not currently on prophylactic antibiotics post-puberty but are vigilant." -
I THINK I WAS GIVEN FALSE HOPE
thereishope replied to bubbasmom's topic in PANS / PANDAS (Lyme included)
I don't know anyone personally, but there have been some parents who have posted on here whose PANDAS children grew up to be full recovered, functioning adults. Now I don't know how that adult would fair if they were to contract strep again. I believe even on PANDAS Network website it states that about 2-3 % (maybe it was higher) do not outgrow PANDAS. I think the problem is most of the kids who were first diagnosed with PANDAS are just becoming adults so we don't really know what their future may hold. I think the state of health a child is in when they hit puberty is important as well. -
In reference to needing more therapy and time... I still have this feeling that some problems, such as OCD, do become residual for some kids and the abs will not fully be the answer for that problem, but therapy is necessary. I realize PANDAS kids during a full blown exacerbation will probably not benefit fro CBT or maybe even ERP, but when you feel you have hit a road block and you are so close to recovery, therapy should be considered (in addition to continuing abs). If CBT can retrain the brain to think the right way and MRI of the brain show that CBT alone can change the chemical balance, then why can't a healthy brain be retrained to do the wrong thing.? Like a bad, reversal CBT? Maybe I think this because my son had residual OCD.
-
dcmom...I actually should have added "and vice versa". I do wonder if it could change both ways. If the child starts as sudden onset then becomes chronic would that be result that the body is just always fighting something? I mean, is the immune system always fighting something? I understood chronic as the symptoms seem to just always be there. They linger. One cannot really pin point when they started. They become one with the child.
-
Could a sudden onset child have been originally chronic then they just had the "one that broke the camel's back" and sent them over the edge? I wonder how many sudden onset kids had any type of disorders or issues prior to that overnight change.
-
Getting approval for IVIG/PEX need help!
thereishope replied to laurenjohnsonsmom's topic in PANS / PANDAS (Lyme included)
Here's one thread that talked about coding options... http://www.latitudes.org/forums/index.php?...;hl=unspecified -
is there a preference dr K,L,T or other
thereishope replied to Fixit's topic in PANS / PANDAS (Lyme included)
I don't have too much to post since I have not seen any of those doctors. However, in reference to the cavity. I say take him to the dentist to get it looked at. Perhaps it just chipped and a nerve is exposed. If there's a hole there now, bacteria can get in and that could cause a worsening of symptoms. It may not be a new cavity. If you wait, it could get worse, need more dental work, or more invasive dental work. -
If you've been living this for awhile, the lines of what is OCD vs "just life" becomes blurred. This is a thread about examples of OCD as seen by parents on this forum. Perhaps read through it and see if anything sounds like your son. http://www.latitudes.org/forums/index.php?...ic=6153&hl= As for the Ibuprofen, when it helped my son it took about 1/2 hour to kick in and started to wear off around the 5 hour mark. It's not a diagnostic test or anything. But if the behaviors go away or lessen with the IB then that shows that there may be some inflammation going on. Regular OCD and anxiety doesn't go away w/ Ibuprofen. Inflammation on the basal ganglia is what happen with PANDAS. If Ibuprofen works, I would share that info with the doctor. If Ibuprofen does not work on a child, it does not dismiss PANDAS. Did someone suggest bipolar? I got that "suggestion" too. My son isn't nor that he is better would anyone suggest that again. One more thing, my son was border line agoraphobia. I believe it was OCD related.
-
Am I the only one who doesn't get the science?
thereishope replied to ajcire's topic in PANS / PANDAS (Lyme included)
Well, like I said in this thread...I'm not that bright sometimes. Should have sent a pm. I deleted my post:) -
Am I the only one who doesn't get the science?
thereishope replied to ajcire's topic in PANS / PANDAS (Lyme included)
. -
Not sure what to do... (warning: long post)
thereishope replied to CandKRich's topic in PANS / PANDAS (Lyme included)
Everyone has given you good advice. I would take SFMom's suggestion and take him back for another rapid and culture. If his breath smells bad, he could have some pus hiding behind his tonsils (if he still has his tonsils).Maybe politely remind them to do a good swab. Also, ask him if he has a weird taste in his mouth. Soemtimes if there is pus, you can taste it.