Effect of electroacupuncture stimulation on expression of angiotensinogen, angiotensin II type 1 receptor, endothelin-1, and endothelin a receptor mRNA in spontaneously hypertensive rat aorta.

Ze-jun Huo; Dong LI; Jia Guo; Sai LI; Ning Ding; Zhi-xin LI

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Effect of electroacupuncture stimulation on expression of angiotensinogen, angiotensin II type 1 receptor, endothelin-1, and endothelin a receptor mRNA in spontaneously hypertensive rat aorta.

Author: Ze-Jun HUO ¹ ; Dong LI ¹ ; Jia GUO ¹ ; Sai LI ¹ ; Ning DING ¹ ; Zhi-Xin LI ²
Author Information

1. Department of Traditional Chinese Medicine, the Third Hospital of Peking University, Beijing, 100191, China.
2. Department of Integration of Chinese and Western Medicine, Peking University Health Science Center, Beijing, 100191, China. lizhixin@bjmu.edu.cn.
Publication Type:Journal Article
Keywords: angiotensin II type 1 receptor; angiotensinogen; electricacupunture; endothelin-1; endothelin-1 A receptor
MeSH: Angiotensinogen; genetics; metabolism; Animals; Aorta; metabolism; physiopathology; Blood Pressure; Electroacupuncture; Endothelin-1; genetics; metabolism; Gene Expression Regulation; Male; RNA, Messenger; genetics; metabolism; Rats, Inbred SHR; Receptor, Angiotensin, Type 1; genetics; metabolism; Receptor, Endothelin A; genetics; metabolism
From: Chinese journal of integrative medicine 2016;22(10):778-782
CountryChina
Language:English
Abstract:
OBJECTIVETo observe the effect of electroacupuncture (EA) stimulation on the expressions of angiotensinogen (AGT), angiotensin II type 1 receptor (AT1R), endothelin-1 (ET1), and endothelin A receptor (ETAR) mRNA in spontaneously hypertensive rat (SHR) aorta.
METHODSEighteen male SHRs were randomly divided into three groups, an SHR group, an SHR Baihui (DU 20) and Zusanli (ST 36) acupoint (SHR-AP) group, and an SHR non-acupoint (SHR-NAP) group, with 6 rats in each group. Six Wistar rats were used as a control. Rats in the SHR-AP group were stimulated by DU 20 and ST 36 acupoints, both of which were connected with EA. EA was handled one time every Monday, Wednesday and Friday, for total 24 times (8 weeks). SHRNAP rats were acupointed at a 15°angle flat into 0.5 cm to two points, which were 1 and 2 cm from rail tip separately. EA parameters were the same as the SHR-AP rats. SHR control rats and Wistar rats were fixed without EA. Real-time quantitative polymerase chain reaction (PCR) was used to measure AGT, AT1R, ET1, and ETAR mRNA expression in rat aorta.
RESULTSEA stimulation significantly reduced rat aorta vascular AGT, ET1, ETAR and AT1R mRNA expressions in the SHR-AP and SHR-NAP groups (P <0.01). Among these four genes, AT1R mRNA expression was significantly lower in the SHR-AP than in the SHR-NAP group (P <0.01).
CONCLUSIONEA could reduce the AT1R mRNA expression in SHR-AP rat aorta, indicating a potential mechanism for the hypotensive effects of EA.