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  • Title: [Expression of renin-angiotensin-aldosterone system in human adipose tissues].
    Author: Zhang XH, Zeng ZP, Li HZ, Zhou YR, Zhang J, Tong AL, Yan ZL.
    Journal: Zhongguo Yi Xue Ke Xue Yuan Xue Bao; 2006 Dec; 28(6):766-9. PubMed ID: 17260463.
    Abstract:
    OBJECTIVE: To compare the mRNA expression of renin-angiotensin-aldosterone system in human subcutaneous and visceral adipose tissues. METHODS: Total RNA was extracted from 12 human subcutaneous adipose tissues, 12 perirenal adipose tissue and 9 periadrenal adipose tissues. The expressions of angiotensinogen ( AGT) , renin, angiotensin converting enzyme ( ACE) , angiotensin converting enzyme 2 (ACE2), angiotensin I1 receptor type 1 (AT1), angiotensin II receptor type 2 (AT2 ), CYP11 B2, and their internal reference glyceraldehyde phosphate (GAPDH) were studied by reverse transcription-polymerase chain reaction. The ratios of each target genes were used to evaluate the expression levels of AGT, renin, ACE, ACE2, AT1, AT2, and CYP11B2 in different adipose tissues. RESULTS: The mRNA expressions of AGT, ACE, ACE2, AT1, and AT2 were detected in human subcutaneous, perirenal, and periadrenal adipose tissues. However, CYPI B2 mRNA expression was not found in these three adipose tissues. The mRNA expressions of renin was only detected in perirenal and periadrenal adipose tissues, which was significantly higher in perirenal adipose tissues than in periadrenal adipose tissues ( P < 0. 05 ). The mRNA expressions of ACE and ACE2 in perirenal adipose tissues were significantly higher than that in subcutaneous adipose tissues ( P < 0. 05). The mRNA expressions of ACE were significantly higher than that of ACE2 in subcutaneous, perirenal, and periadrenal adipose tissues (P <0. 05). The mRNA expressions of AT1 were significantly lower than that of AT2 in periadrenal adipose tissues (P < 0. 05). CONCLUSION: Local renin-angiotensin system exists in the adipose tissues; however, aldosterone is not synthesized in the adipose tissues.
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