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A Novel Blood Pressure Modulator C1q/TNF-メ–related Protein 1 (CTRP1)
Sora Han1, Young Yang1,*
1The Research Institute of Women’s Health and 2Department of Biological Sciences,, Sookmyung Women’s University, Seoul 04310, Korea
C1q/TNF-メ–Related Protein 1 (CTRP1) has recently been shown to act as a blood pressure regulator, as it induces vasoconstriction. In the aorta, CTRP1 facilitates recruitment of angiotensin II receptor 1 (AT1R) to plasma membrane, through activation of the AKT/AS160 signaling pathway. This leads to activation of the Ras homolog gene family (Rho)/Rho kinase (ROCK) signaling pathway, resulting in vasoconstriction. Accordingly, mice overexpressing Ctrp1 have hypertensive phenotype. Patients with hypertension also display higher circulating CTRP1 levels, compared to healthy individuals, indicating that excessive CTRP1 may affect development of hypertension. Conversely, CTRP1 is regarded as an ‘innate blood pressure modulator’ because CTRP1 increases blood pressure under dehydration to prevent hypotension. Mice lacking Ctrp1 fail to maintain normotension under dehydration conditions, resulting in hypotension, suggesting that CTRP1 is an essential protein for maintaining blood pressure homeostasis. In conclusion, CTRP1 is a novel, anti-hypotensive vasoconstrictor that increases blood pressure during dehydration-induced hypotension.
Abstract, Accepted Manuscript [Submitted on November 21, 2018, Accepted on November 21, 2018]
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