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  • Title: [Role of renin angiotensin system in the vasopressor mechanisms of hypertension--gene analyses and tissue renin angiotensin system].
    Author: Nishimura M, Yoshimura M.
    Journal: Rinsho Byori; 1995 Nov; 43(11):1128-32. PubMed ID: 8551676.
    Abstract:
    The renin angiotensin system is one of the most important humoral factors underlying the mechanism of hypertension. The genes constituting the renin angiotensin system have been expected to be candidates for essential hypertension. DNA polymorphisms of angiotensinogen and angiotensin II type 1 receptor genes are reported to be significantly related with the incidence of human hypertension, but further investigation is needed to clarify the relationship between the genes of the renin angiotensin system and hypertension. The renin angiotensin system exists not only in circulating blood, but also in extrarenal organs and tissues. Tissue renin angiotensin systems in the brain, blood vessels, and adrenal glands are considered to play important roles in the pressor mechanisms in low renin as well as high renin hypertension. Gene expressions of the constituents of the tissue renin angiotensin system are affected in part by circulating angiotensin II, but they are regulated mostly by their own specific control mechanisms in each organ and tissue. In future, laboratory tests in clinical medicine may be necessary to determine the DNA polymorphisms and tissue gene expression of renin angiotensin system, in deciding the diagnosis, prognosis and therapy of hypertension.
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