Bliverdin reductase-A improves neurological function in a germinal matrix hemorrhage rat model.

Bliverdin reductase-A improves neurological function in a germinal matrix hemorrhage rat model.
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DOI:
10.1016/j.nbd.2017.11.017
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发表时间:
2018-03
影响因子:
6.1
通讯作者:
Zhang JH
Zhang JH
中科院分区:
医学1区
文献类型:
--
作者:
Zhang Y;Ding Y;Lu T;Zhang Y;Xu N;Yu L;McBride DW;Flores JJ;Tang J;Zhang JH

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Germinal matrix hemorrhage is induced by stereotaxic injection of collagenase into the germinal matrix of P7 Sprague-Dawley rats. Hemoglobin assay, western blot, immunofluorescence and neurobehavioral tests were used to test the effects of BLVRA on hematoma resolution and anti-inflammatory response. We showed that BLVRA triggered a signaling cascade that ameliorated post-hemorrhagic neurological deficits in both short-term and long-term neurobehavioral tests in a GMH rat model. Specifically, BLVRA inhibited toll-like receptor 4 (TLR4) expression by translocating to the nucleus in an endothelial nitric oxide (eNOS)/nitric oxide (NO)-dependent manner. BLVRA also induced the upregulation of CD36 scavenger receptor level in microglia/microphages, of which the prominent role is to enhance hematoma resolution. However, the beneficial effects of BLVRA were abolished with the knockdown of eNOS, indicating that the eNOS/NO system is an important downstream factor of BLVRA. Our results demonstrate a mechanism of BLVRA modulating hematoma resolution and suppressing inflammation through eNOS/NO/TLR4 pathway in the GMH rat model.
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