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Pàgina inicial > Articles > Articles publicats > Gut dysbiosis and neuroimmune responses to brain infection with Theiler's murine encephalomyelitis virus |
Data: | 2017 |
Resum: | Recent studies have begun to point out the contribution of microbiota to multiple sclerosis (MS) pathogenesis. Theiler's murine encephalomyelitis virus induced demyelinating disease (TMEV-IDD) is a model of progressive MS. Here, we first analyze the effect of intracerebral infection with TMEV on commensal microbiota and secondly, whether the early microbiota depletion influences the immune responses to TMEV on the acute phase (14 dpi) and its impact on the chronic phase (85 dpi). The intracranial inoculation of TMEV was associated with a moderate dysbiosis. The oral administration of antibiotics (ABX) of broad spectrum modified neuroimmune responses to TMEV dampening brain CD4 + and CD8 + T infiltration during the acute phase. The expression of cytokines, chemokines and VP2 capsid protein was enhanced and accompanied by clusters of activated microglia disseminated throughout the brain. Furthermore, ABX treated mice displayed lower levels of CD4 + and CD8 + T cells in cervical and mesenteric lymph nodes. Increased mortality to TMEV was observed after ABX cessation at day 28pi. On the chronic phase, mice that survived after ABX withdrawal and recovered microbiota diversity showed subtle changes in brain cell infiltrates, microglia and gene expression of cytokines. Accordingly, the surviving mice of the group ABX-TMEV displayed similar disease severity than TMEV mice. |
Ajuts: | Ministerio de Economía y Competitividad RD 12/0008 Ministerio de Economía y Competitividad RD16/0015/0021 Ministerio de Economía y Competitividad RD12/0032 Ministerio de Economía y Competitividad RD16/0015/0001 Ministerio de Economía y Competitividad RD12/0017 Ministerio de Economía y Competitividad RD16/0015/0004 Ministerio de Economía y Competitividad FIS PI12-00239 Ministerio de Economía y Competitividad PI13/205 Ministerio de Economía y Competitividad SAF2013-42784R Ministerio de Economía y Competitividad CP07/00146 Ministerio de Economía y Competitividad CP13/00028 Ministerio de Economía y Competitividad CB05/00137 |
Drets: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió publicada |
Publicat a: | Scientific reports, Vol. 7 (03 2017) , ISSN 2045-2322 |
16 p, 2.6 MB |