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PNAS:肠道微生物群信号可能调控血压

2014-05-04 EurekAlert!中文 EurekAlert!

一项研究发现,通过对两个主要的短链脂肪酸(SCFAs)受体——嗅觉受体78 (Olfr78)和Gpr41起作用,肠道微生物群产生的短链脂肪酸(SCFAs)可能在调控血压方面起到作用。 Jennifer L. Pluznick及其同事发现,Olfr78在肾脏中表达,并且会响应短链脂肪酸(SCFAs),特别是响应丙酸盐,而介导肾素分泌。当给小鼠提供丙酸盐的时候,它们的血压会出现幅度大而迅速的基于剂量

一项研究发现,通过对两个主要的短链脂肪酸(SCFAs)受体——嗅觉受体78 (Olfr78)和Gpr41起作用,肠道微生物群产生的短链脂肪酸(SCFAs)可能在调控血压方面起到作用。

Jennifer L. Pluznick及其同事发现,Olfr78在肾脏中表达,并且会响应短链脂肪酸(SCFAs),特别是响应丙酸盐,而介导肾素分泌。当给小鼠提供丙酸盐的时候,它们的血压会出现幅度大而迅速的基于剂量依赖的下降,而敲除了Olfr78 的小鼠对这种效应特别敏感,这提示Olfr78的正常功能是提高血压并对抗短链脂肪酸(SCFAs)的低血压效应。相比之下,缺乏Gpr41基因的小鼠对丙酸盐没有低血压响应,而这个剂量导致了野生类型的小鼠的强烈低血压响应,这提示Gpr41参与到了对丙酸盐做出响应降低血压。通过给予抗生素而减少Olfr78被敲除小鼠的肠道微生物群生物质导致了它们的血压增加,这提示肠道微生物群制造的丙酸盐通过Olfr78受体调控血压。

这组作者提出,研究肠道微生物群和肾脏-心血管系统的串扰可能有助于更好地理解和治疗高血压

原始出处

Pluznick JL1, Protzko RJ, Gevorgyan H, Peterlin Z, Sipos A, Han J, Brunet I, Wan LX, Rey F, Wang T, Firestein SJ, Yanagisawa M, Gordon JI, Eichmann A, Peti-Peterdi J, Caplan MJ.Olfactory receptor responding to gut microbiota-derived signals plays a role in renin secretion and blood pressure regulation.Proc Natl Acad Sci U S A. 2013 Mar 12

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    2014-07-11 drwjr
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