Endothelial nitric oxide synthase mediates the cerebrovascular effects of erythropoietin in traumatic brain injury.
Endothelial nitric oxide synthase mediates the cerebrovascular effects of erythropoietin in traumatic brain injury.
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DOI:
10.3389/fimmu.2014.00494
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发表时间:
2014
影响因子:
7.3
通讯作者:
Robertson CS
中科院分区:
文献类型:
--
作者:
Cruz Navarro J;Pillai S;Ponce LL;Van M;Goodman JC;Robertson CS
Background: Erythropoietin (Epo) improves post-traumatic cerebral blood flow (CBF), pressure autoregulation, and vascular reactivity to l-arginine. This study examines the dependence of these cerebral hemodynamic effects of Epo on nitric oxide generated by endothelial nitric oxide synthase (eNOS). Methods: Using laser Doppler flow imaging, CBF was monitored in wild-type (WT) and eNOS-deficient mice undergoing controlled cortical impact followed by administration of Epo (5000 U/kg) or normal saline. Results: Cerebral blood flow decreased in all groups post-injury with the greatest reductions occurring at the impact site. Epo administration resulted in significantly higher CBF in the peri-contusional sites in the WT mice [70.2 ± 3.35% in Epo-treated compared to 53 ± 3.3% of baseline in saline-treated mice (p < 0.0001)], but no effect was seen in the eNOS-deficient mice. No CBF differences were found at the core impact site where CBF dropped to 20–25% of baseline in all groups. Conclusion: These differences between eNOS-deficient and WT mice indicate that the Epo mediated improvement in CBF in traumatic brain injury is eNOS dependent.
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影响因子:
5
作者:
Catania, MA;Marciano, MC;Calapai, G
通讯作者:
Calapai, G
影响因子:
3.6
作者:
Clark, RSB;Kochanek, PM;Watkins, SC
通讯作者:
Watkins, SC
影响因子:
8.8
作者:
Bouzat, Pierre;Millet, Anne;Payen, Jean-Francois
通讯作者:
Payen, Jean-Francois
DOI:
10.1124/jpet.107.119628
发表时间:
2007-08-01
影响因子:
3.5
作者:
Cherian, Leela;Clay Goodman, J.;Robertson, Claudia
通讯作者:
Robertson, Claudia
影响因子:
2.7
作者:
Liao, Z. B.;Jiang, G. Y.;Wu, M. J.
通讯作者:
Wu, M. J.