PMID- 22759321 OWN - NLM STAT- MEDLINE DCOM- 20130610 LR - 20211021 IS - 1742-2094 (Electronic) IS - 1742-2094 (Linking) VI - 9 DP - 2012 Jul 3 TI - Cytotoxic CD8+ T cells and CD138+ plasma cells prevail in cerebrospinal fluid in non-paraneoplastic cerebellar ataxia with contactin-associated protein-2 antibodies. PG - 160 LID - 10.1186/1742-2094-9-160 [doi] AB - OBJECTIVE: The purpose of this paper is to report a patient with otherwise unexplained cerebellar ataxia with serum antibodies against contactin-associated protein-2 (CASPR-2) and provide a detailed description of the composition of cellular infiltrates in the cerebrospinal fluid (CSF) compared to the peripheral blood (PB). CASPR-2 antibodies strongly labeling axons of cerebellar granule neurons have recently been identified in sera from nine patients with otherwise unexplained progressive cerebellar ataxia with mild to severe cerebellar atrophy. DESIGN: This is a report of a single case. METHODS: The study methods used were neurologic examination, magnetic resonance imaging, fluorodeoxyglucose positron emisson tomography, lumbar puncture and multicolor flow-cytometry. RESULTS: A 23-year-old Caucasian male presented with a two-year history of a progressive cerebellar and brainstem syndrome. Magnetic resonance imaging (MRI) showed pronounced cerebellar atrophy, especially of the medial parts of the hemispheres and the vermis. Cerebral fluorodeoxyglucose positron emission tomography (FDG-PET) showed pronounced hypometabolism of the whole cerebellum. CASPR-2 antibodies were detected in the serum but not the CSF, and none of the staging and laboratory assessments revealed other causes of progressive cerebellar degeneration. Interestingly, flow-cytometry of the CSF as compared to the PB showed increased fractions of CD138+ plasma cells as well as human leukocyte antigen (HLA)-DR+ CD8+ T cells suggesting that both B cells and CD8+ T cells were preferentially recruited to and activated within the CSF- (and putatively central nervous system (CNS)-) compartment. CONCLUSION: We confirm the association of CASPR-2 serum antibodies with cerebellar ataxia and provide the first evidence for a combined humoral and cellular immune response in this novel antibody-associated inflammatory CNS disease. FAU - Melzer, Nico AU - Melzer N AD - Department of Neurology, Inflammatory Disorders of the Nervous System and Neurooncology, University of Munster, Albert-Schweitzer Campus 1, Munster 48149, Germany. nico.melzer@ukmuenster.de FAU - Golombeck, Kristin S AU - Golombeck KS FAU - Gross, Catharina C AU - Gross CC FAU - Meuth, Sven G AU - Meuth SG FAU - Wiendl, Heinz AU - Wiendl H LA - eng PT - Case Reports PT - Journal Article DEP - 20120703 PL - England TA - J Neuroinflammation JT - Journal of neuroinflammation JID - 101222974 RN - 0 (Autoantibodies) RN - 0 (CNTNAP2 protein, human) RN - 0 (Membrane Proteins) RN - 0 (Nerve Tissue Proteins) RN - 0 (SDC1 protein, human) RN - 0 (Syndecan-1) SB - IM MH - Autoantibodies/*biosynthesis/cerebrospinal fluid MH - Cerebellar Ataxia/*cerebrospinal fluid/diagnosis/immunology MH - Humans MH - Male MH - Membrane Proteins/cerebrospinal fluid/*immunology MH - Nerve Tissue Proteins/cerebrospinal fluid/*immunology MH - Plasma Cells/immunology/*metabolism MH - Syndecan-1/*cerebrospinal fluid/immunology MH - T-Lymphocytes, Cytotoxic/immunology/*metabolism MH - Young Adult PMC - PMC3464990 EDAT- 2012/07/05 06:00 MHDA- 2013/06/12 06:00 PMCR- 2012/07/03 CRDT- 2012/07/05 06:00 PHST- 2012/05/09 00:00 [received] PHST- 2012/06/20 00:00 [accepted] PHST- 2012/07/05 06:00 [entrez] PHST- 2012/07/05 06:00 [pubmed] PHST- 2013/06/12 06:00 [medline] PHST- 2012/07/03 00:00 [pmc-release] AID - 1742-2094-9-160 [pii] AID - 10.1186/1742-2094-9-160 [doi] PST - epublish SO - J Neuroinflammation. 2012 Jul 3;9:160. doi: 10.1186/1742-2094-9-160.