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Can Excess Glucocorticoid, Predispose to Cardiovascular and Metabolic Disease in Middle Age?

For many years, both human and animal studies correlated changes in behaviour of the young offspring with the degree of maternal stress or glucocorticoid exposure of the foetus/neonate. In the past ten years there has been overwhelming epidemiological evidence to suggest that growth retardation in utero is a very important risk factor for the development of cardiovascular and metabolic disease in adult life. More recently, it has been shown that one important, even key, determinant is the exposure of the foetus to excess glucocorticoid. Even a brief period (48 h) of dexamethasone exposure very early in pregnancy was able to programme permanently hypertensive adult sheep. Understanding how such programming works, and the underlying physiological changes that occur, provides one of the most exciting challenges in contemporary endocrinology and developmental biology.