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In this study, we investigated the spatiotemporal changes in the expression of oligodendroglial GJ protein connexin 47 (Cx47), its primary astroglial coupling partner, Cx43, and their association with demyelination following intracerebral infection with mouse hepatitis virus (MHV). Neurotropic strains of MHV, a \u03b2-coronavirus, induce an acute encephalomyelitis followed by a chronic demyelinating disease that shares similarities with the human disease multiple sclerosis (MS). Our results reveal that Cx47 GJs are persistently lost in mature oligodendrocytes, not only in demyelinating lesions but also in surrounding normal appearing white and gray matter areas, following an initial loss of astroglial Cx43 GJs during acute infection. At later stages after viral clearance, astroglial Cx43 GJs re-emerge but mature oligodendrocytes fail to fully re-establish GJs with astrocytes due to lack of Cx47 GJ expression. In contrast, at this later demyelinating stage, the increased oligodendrocyte precursor cells appear to exhibit Cx47 GJs. Our findings further highlight varying degrees of demyelination in distinct spinal cord regions, with the thoracic cord showing the most pronounced demyelination. The regional difference in demyelination correlates well with dynamic changes in the proportion of different oligodendrocyte lineage cells exhibiting differential Cx47 GJ expression, suggesting an important mechanism of progressive demyelination even after viral clearance.<\/jats:p>","DOI":"10.1007\/s12035-024-04482-0","type":"journal-article","created":{"date-parts":[[2024,9,24]],"date-time":"2024-09-24T06:02:30Z","timestamp":1727157750000},"page":"3428-3445","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Neurotropic Murine \u03b2-Coronavirus Infection Causes Differential Expression of Connexin 47 in Oligodendrocyte Subpopulations Associated with Demyelination"],"prefix":"10.1007","volume":"62","author":[{"given":"Soubhik","family":"Das","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Archana Kumari","family":"Shaw","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Subhajit","family":"Das Sarma","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael","family":"Koval","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jayasri","family":"Das Sarma","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9046-3716","authenticated-orcid":false,"given":"Mahua","family":"Maulik","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2024,9,18]]},"reference":[{"issue":"11","key":"4482_CR1","doi-asserted-by":"publisher","first-page":"647","DOI":"10.1038\/nrneurol.2012.168","volume":"8","author":"H Lassmann","year":"2012","unstructured":"Lassmann H, van Horssen J, Mahad D (2012) Progressive multiple sclerosis: pathology and pathogenesis. 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