title: Anti-GM2 ganglioside antibodies are a biomarker for acute canine polyradiculoneuritis.
abstract: Acute canine polyradiculoneuritis (ACP) is considered to be the canine equivalent of the human peripheral nerve disorder Guillain-Barré syndrome (GBS); an aetiological relationship, however, remains to be demonstrated. In GBS, anti-glycolipid antibodies (Abs) are considered as important disease mediators. To address the possibility of common Ab biomarkers, the sera of 25 ACP dogs, 19 non-neurological, and 15 epileptic control dogs were screened for IgG Abs to 10 glycolipids and their 1 : 1 heteromeric complexes using combinatorial glycoarrays. Anti-GM2 ganglioside Abs were detected in 14/25 ACP dogs, and anti-GA1 Abs in one further dog. All controls except for one were negative for anti-glycolipid Abs. In this cohort of cases and controls, the glycoarray screen reached a diagnostic sensitivity of 60% and a specificity of 97%; a lower sensitivity (32%) was reported using a conventional glycolipid ELISA. To address the possible pathogenic role for anti-GM2 Abs in ACP, we identified GM2 in canine sciatic nerve by both mass spectrometry and thin layer chromatography overlay. In immunohistological studies, GM2 was localized predominantly to the abaxonal Schwann cell membrane. The presence of anti-GM2 Abs in ACP suggests that it may share a similar pathophysiology with GBS, for which it could thus be considered a naturally occurring animal model.
authors.affiliation: Neuroimmunology Group, Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK.
authors.forename: Angie
authors.initials: A
authors.lastname: Rupp
authors.affiliation: Neuroimmunology Group, Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK.
authors.forename: Francesc
authors.initials: F
authors.lastname: Galban-Horcajo
authors.affiliation: Veterinary Teaching Hospital, University of Parma, Parma, Italy.|Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy.
authors.forename: Ezio
authors.initials: E
authors.lastname: Bianchi
authors.affiliation: Veterinary Teaching Hospital, University of Parma, Parma, Italy.
authors.forename: Maurizio
authors.initials: M
authors.lastname: Dondi
authors.affiliation: School of Veterinary Medicine, Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK.
authors.forename: Jacques
authors.initials: J
authors.lastname: Penderis
authors.affiliation: Neuroimmunology Group, Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK.|Glasgow Polyomics, Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK.
authors.forename: Joanna
authors.initials: J
authors.lastname: Cappell
authors.affiliation: Glasgow Polyomics, Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK.
authors.forename: Karl
authors.initials: K
authors.lastname: Burgess
authors.affiliation: Section of Clinical and Comparative Neuropathology, Department of Veterinary Clinical Sciences, Ludwig-Maximilians-University, Munich, Germany.
authors.forename: Kaspar
authors.initials: K
authors.lastname: Matiasek
authors.affiliation: Neuroimmunology Group, Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK.
authors.forename: Rhona
authors.initials: R
authors.lastname: McGonigal
authors.affiliation: Neuroimmunology Group, Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK.
authors.forename: Hugh J
authors.initials: HJ
authors.lastname: Willison
mesh_terms: D000208:Acute Disease; D000818:Animals; D015415:Biomarkers / Q000097:blood*; D002855:Chromatography, Thin Layer; D003952:Diagnostic Imaging; D004285:Dogs; D004558:Electric Stimulation; D004576:Electromyography; D004797:Enzyme-Linked Immunosorbent Assay; D019054:Evoked Potentials, Motor / Q000502:physiology; D005260:Female; D005678:G(M2) Ganglioside / Q000276:immunology*; D007074:Immunoglobulin G / Q000097:blood*; D008279:Magnetic Resonance Imaging; D008297:Male; D009460:Neurologic Examination; D011129:Polyradiculoneuropathy / Q000097:blood* / Q000175:diagnosis / Q000503:physiopathology / Q000662:veterinary*; D012584:Sciatic Nerve / Q000473:pathology; D013116:Spinal Cord / Q000473:pathology; D013223:Statistics as Topic
chemical_list: D015415:Biomarkers; D007074:Immunoglobulin G; D005678:G(M2) Ganglioside