Hi folks,
I've been going through the various papers and trying to tease out what questions the researchers are actually answering. If you've been reading papers you think are signfiicant can you add to this list or send me a message regarding other questions/papers? I'm not looking for "review" articles, but rather people running experiments that are testing certain hypothesies.
Whether sudden onset OCD is correlated with untreated strep infections?
[swedo1997] S Swedo et al, "Identification of Children With Pediatric Autoimmune Neuropsychiatric Disorders Associated With Streptococcal Infections by a Marker Associated With Rheumatic Fever", Am J Psychiatry 154:1, January 1997 http://ajp.psychiatryonline.org/cgi/reprint/154/1/110.pdf
[swedo1998] Swedo SE et al., "Pediatric Autoimmune Neuropsychiatric Disorders Associated With Streptococcal Infections: Clinical Description of the First 50 Cases", Am J Psychiatry 155:2, February 1998. http://ajp.psychiatryonline.org/cgi/reprint/155/2/264
Whether established OCD and/or tic disorders have exacerbations associated with treated strep infections?
[Kurlan 2008] Kurlan R, et al. Streptococcal infection and exacerbations of childhood tics and obsessive-compulsive symptoms: a prospective blinded cohort study. Pediatrics. 2008 Jun;121(6):1188-97.
[Leckman 2011] Leckman JF, et al. Streptococcal upper respiratory tract infections and exacerbations of tic and obsessive-compulsive symptoms: a prospective longitudinal study. J Am Acad Child Adolesc Psychiatry. 2011 Feb;50(2):108-118
Whether symptoms remit when treated with antibiotics?
[Garvey 1999] Garvey, MA et al. A pilot study of penicillin prophylaxis for neuropsychiatric exacerbations triggered by streptococcal infections. Biol Psychiatry. 1999 Jun 15;45(12):1564-71.
[snider 2005]. Snider2005, et al, Antibiotic prophylaxis with azithromycin or penicillin for childhood-onset neuropsychiatric disorders. Biol Psychiatry. 2005 Apr 1;57(7):788-92.
[Murphy2004] Murphy TK, Muhammad S, Soto O, et al. "Detecting pediatric autoimmune neuropsychiatric disorders associated with streptococcus in children with obsessive-compulsive disorder and tics", Biological Psychiatry, Volume 55, Issue 1, Pages 61-68, January 2004 http://www.journals.elsevierhealth.com/per...0704-2/abstract
Whether symptoms remit when treated with IVIG/PEX?
[Perlmutter1999]Perlmutter SJ, Leitman SF, Garvey MA, "Therapeutic plasma exchange and intravenous immunoglobulin for obsessive-compulsive disorder and tic disorders in childhood", Lancet 1999; 354 : 1153 58 http://intramural.nimh.nih.gov/pdn/pubs/pub-5.pdf
Whether strep colonization alone is sufficient to trigger exacerbations?
[Dileepan 2011] Dileepan T, et al. Robust antigen specific th17 T cell response to group A Streptococcus is dependent on IL-6 and intranasal route of infection. PLoS Pathog. 2011 Sep;7(9)
[Wang 2010] Wang B, et al. Induction of TGF-beta1 and TGF-beta1-dependent predominant Th17 differentiation by group A streptococcal infection. Proc Natl Acad Sci U S A. 2010 Mar 30;107(13):5937-42.
[ Hyland 2009] Hyland KA , et al. The early interferon response of nasal-associated lymphoid tissue to Streptococcus pyogenes infection. FEMS Immunol Med Microbiol. 2009 Apr;55(3):422-31.
[Constalonga 2009] Costalonga M, et al. Intranasal bacteria induce Th1 but not Treg or Th2. Mucosal Immunol. 2009 Jan;2(1):85-95.
Whether anti-neuronal antibodies are diagnostic for PANDAS?
[singer 2008] Singer, et al. “Serial immune markers do not correlate with clinical exacerbations in pediatric autoimmune neuropsychiatric disorders associated with streptococcal infections.”, Pediatrics. 2008 Jun;121(6):1198-205.
[Kirvan2003] Kirvan CA, Swedo SE, Heuser JS, Cunningham MW, "Mimicry and Auto-antibody mediated neuronal Signaling Cells in Sydenham Chorea", Nature Medicine 9, 914 - 920 (2003) http://www.pandasnetwork.org/Cunningham.NMpaper[1].pdf [Kirvan2006] Kirvan CA, Swedo SE, Kurahara D, Cunningham MW, "Streptococcal mimicry and antibody-mediated cell signaling in the pathogenesis of Sydenham's chorea". 2006 Autoimmunity 39 (1): 219. http://www.pandasnetwork.org/CunninghamJNICaMKinase.pdf
[Dale 2012] Dale RC, et al. Antibodies to surface dopamine-2 receptor in autoimmune movement and psychiatric disorders. Brain. 2012 Nov;135 (Pt 11):3453-68. doi: 10.1093/brain/aws256. Epub 2012 Oct 11.
[brilot 2011] Brilot F, et al. Antibody binding to neuronal surface in Sydenham chorea, but not in PANDAS or Tourette syndrome. Neurology. 2011 Apr 26;76(17):1508-13.
Whether antibodies to GABHS trigger behavioral changes (in mice)?
[Yaddenapudi 2010] Yaddanapudi K, et al. Passive transfer of streptococcus-induced antibodies reproduces behavioral disturbances in a mouse model of pediatric autoimmune neuropsychiatric disorders associated with streptococcal infection. Mol Psychiatry. 2010 Jul;15(7):712-26.
[Hoffman 2004] Hoffman KL et al, A murine model for neuropsychiatric disorders associated with group A beta-hemolytic streptococcal infection. J Neurosci. 2004 Feb 18;24(7):1780-91.
Whether exacerbations are correlated with otherwise asymptomatic carriage?
??? Kurlan?
Any others?
Buster