Adiponectin inhibits hyperlipidemia-induced platelet aggregation via attenuating oxidative/nitrative stress

Title:

Adiponectin inhibits hyperlipidemia-induced platelet aggregation via attenuating oxidative/nitrative stress

Creator:

Wang, W.-Q., Zhang, H.-F., Gao, G.-X., Bai, Q.-X., Li, R., and Wang, X.-M.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:18da3ed5-8e7f-4c8f-98a8-1d7e0c5f4372
uuid:18da3ed5-8e7f-4c8f-98a8-1d7e0c5f4372

Subject:

Fyziologie člověka a srovnávací fyziologie, hyperlipidémie, oxidační stres, hyperlipidemia, oxidative stress, adiponectin, platelet, aggregation, 14, and 612

Type:

article, články, model:article, and TEXT

Format:

print

Description:

Adiponectin acts as an endogenous antithrombotic factor. However, the mechanisms underlying the inhibition of platelet aggregation by adiponectin still remain elusive. The present study was designed to test whether adiponectin inhibits platelet aggregation by attenuation of oxidative/nitrative stress. Adult rats were fed a regular or high-fat diet for 14 weeks. The platelet was immediately separated and stimulated with recombinant full-length adiponectin (rAPN) or not. The platelet aggregation, nitric oxide (NO) and superoxide production, endothelial nitric oxide synthase (eNOS)/inducible NOS (iNOS) expression, and antioxidant capacity were determined. Treatment with rAPN inhibited hyperlipidemia- induced platelet aggregation (P<0.05). Interestingly, total NO, a crucial molecule depressing platelet aggregation and thrombus formation , was significantly reduced, rather than increased in rAPN-treated platelets. Treatment with rAPN markedly decreased superoxide production (-62 %, P<0.05) and enhanced antioxidant capacity (+38 %, P<0.05) in hyperlipidemic platelets. Hyperlipidemia-induced reduced eNOS phosphorylation and increased iNOS expression were significantly reversed following rAPN treatment (P<0.05, P<0.01, respectively). Taken together, these data suggest that adiponectin is an adipokine that suppresses platelet aggregation by enhancing eNOS activation and attenuating oxidative/nitrative stress including blocking iNOS expression and superoxide production., W.-Q. Wang ... [et al.]., and Obsahuje bibliografii a bibliografické odkazy

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Source:

Physiological research | 2011 Volume:60 | Number:2

Harvested from:

CDK

Metadata only:

false