PMID- 31916298 OWN - NLM STAT- MEDLINE DCOM- 20210708 LR - 20210904 IS - 1750-3639 (Electronic) IS - 1015-6305 (Print) IS - 1015-6305 (Linking) VI - 30 IP - 3 DP - 2020 May TI - Extensive subpial cortical demyelination is specific to multiple sclerosis. PG - 641-652 LID - 10.1111/bpa.12813 [doi] AB - Cortical demyelinated lesions are frequent and widespread in chronic multiple sclerosis (MS) patients, and may contribute to disease progression. Inflammation and related oxidative stress have been proposed as central mediators of cortical damage, yet meningeal and cortical inflammation is not specific to MS, but also occurs in other diseases. The first aim of this study was to test whether cortical demyelination was specific for demyelinating CNS diseases compared to other CNS disorders with prominent meningeal and cortical inflammation. The second aim was to assess whether oxidative tissue damage was associated with the extent of neuroaxonal damage. We studied a large cohort of patients diagnosed with demyelinating CNS diseases and non-demyelinating diseases of autoimmune, infectious, neoplastic or metabolic origin affecting the meninges and the cortex. Included were patients with MS, acute disseminated encephalomyelitis (ADEM), neuromyelitis optica (NMO), viral and bacterial meningoencephalitis, progressive multifocal leukoencephalopathy (PML), subacute sclerosing panencephalitis (SSPE), carcinomatous and lymphomatous meningitis and metabolic disorders such as extrapontine myelinolysis, thus encompassing a wide range of adaptive and innate cytokine signatures. Using myelin protein immunohistochemistry, we found cortical demyelination in MS, ADEM, PML and extrapontine myelinolysis, whereby each condition showed a disease-specific histopathological pattern. Remarkably, extensive ribbon-like subpial demyelination was only observed in MS, thus providing an important pathogenetic and diagnostic cue. Cortical oxidative injury was detected in both demyelinating and non-demyelinating CNS disorders. Our data demonstrate that meningeal and cortical inflammation alone accompanied by oxidative stress are not sufficient to generate the extensive subpial cortical demyelination found in MS, but require other MS-specific factors. CI - (c) 2020 The Authors. Brain Pathology published by John Wiley & Sons Ltd on behalf of International Society of Neuropathology. FAU - Junker, Andreas AU - Junker A AUID- ORCID: 0000-0002-8063-9765 AD - Institute of Neuropathology, University Medical Center Gottingen, Georg August University Gottingen, Robert-Koch-Str. 40, 37075, Gottingen, Germany. AD - Department of Neuropathology, University Hospital Essen, Hufelandstr. 55, 45147, Essen, Germany. FAU - Wozniak, Jadwiga AU - Wozniak J AD - Institute of Neuropathology, University Medical Center Gottingen, Georg August University Gottingen, Robert-Koch-Str. 40, 37075, Gottingen, Germany. FAU - Voigt, David AU - Voigt D AD - Institute of Neuropathology, University Medical Center Gottingen, Georg August University Gottingen, Robert-Koch-Str. 40, 37075, Gottingen, Germany. FAU - Scheidt, Uta AU - Scheidt U AD - Institute of Neuropathology, University Medical Center Gottingen, Georg August University Gottingen, Robert-Koch-Str. 40, 37075, Gottingen, Germany. FAU - Antel, Jack AU - Antel J AD - Montreal Neurological Institute, McGill University Health Centre, 2155 Guy Street, Montreal, Canada. FAU - Wegner, Christiane AU - Wegner C AD - Institute of Neuropathology, University Medical Center Gottingen, Georg August University Gottingen, Robert-Koch-Str. 40, 37075, Gottingen, Germany. AD - Department of Child and Adolescent Psychiatry/Psychotherapy, University Medical Center Gottingen, Georg August University Gottingen, Robert-Koch-Str. 40, 37075, Gottingen, Germany. FAU - Bruck, Wolfgang AU - Bruck W AD - Institute of Neuropathology, University Medical Center Gottingen, Georg August University Gottingen, Robert-Koch-Str. 40, 37075, Gottingen, Germany. FAU - Stadelmann, Christine AU - Stadelmann C AD - Institute of Neuropathology, University Medical Center Gottingen, Georg August University Gottingen, Robert-Koch-Str. 40, 37075, Gottingen, Germany. LA - eng GR - National Multiple Sclerosis Society/International PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200203 PL - Switzerland TA - Brain Pathol JT - Brain pathology (Zurich, Switzerland) JID - 9216781 SB - IM MH - Cerebral Cortex/*pathology MH - Demyelinating Diseases/*pathology MH - Disease Progression MH - Humans MH - Inflammation/pathology MH - Meninges/*pathology MH - Multiple Sclerosis/*pathology MH - Myelin Sheath/*pathology PMC - PMC8018087 OTO - NOTNLM OT - acute disseminated encephalomyelitis (ADEM) OT - carcinomatous and lymphomatous meningitis OT - cortical demyelination OT - meningitis OT - multiple sclerosis (MS) OT - neuromyelitis optica (NMO) OT - oxidative stress OT - progressive multifocal leukoencephalopathy (PML) OT - subpial lesions COIS- The authors declare that they have no conflict of interest. EDAT- 2020/01/10 06:00 MHDA- 2021/07/09 06:00 PMCR- 2020/02/03 CRDT- 2020/01/10 06:00 PHST- 2019/10/24 00:00 [received] PHST- 2020/01/02 00:00 [accepted] PHST- 2020/01/10 06:00 [pubmed] PHST- 2021/07/09 06:00 [medline] PHST- 2020/01/10 06:00 [entrez] PHST- 2020/02/03 00:00 [pmc-release] AID - BPA12813 [pii] AID - 10.1111/bpa.12813 [doi] PST - ppublish SO - Brain Pathol. 2020 May;30(3):641-652. doi: 10.1111/bpa.12813. Epub 2020 Feb 3.