Expression of the renin gene in extra-renal tissues of the rat

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Abstract
Expression of the renin gene in several rat organs is demonstrated by the detection of renin mRNA using a ribonuclease-protection technique. In two of these sites, the brain and the liver, renin mRNA levels are unaffected by changes in dietary salt which markedly affect renal renin mRNA levels. The findings provide the basis for an important ubiquitous local regulatory role for the renin-angiotensin system extending beyond the circulation.