Renin stability regulatory element, also known as RSRE, is a key element in maintaining the stability of renin mRNA. There are several synonyms for RSRE, including renin mRNA stability element, renin translation regulatory element, and renin post-transcriptional regulatory element. These synonyms are used interchangeably to refer to the same element that plays a critical role in controlling the expression of renin. Understanding the regulation of renin expression is important for the management of hypertension and other cardiovascular diseases. Researchers continue to study the mechanisms by which RSRE controls renin expression to develop targeted therapies for these conditions.