Abstract
Epidemiologic studies have shown that malnutrition in utero is a risk factor for cardiovascular disease (CVD) in adulthood. Recently, we reported a mouse animal model of 30% maternal caloric reduction, in which adult offspring (undernourished [UN] offspring) showed a significant increase in cardiac remodeling-associated parameters, such as cardiac enlargement (CE) and coronary perivascular fibrosis (CPVF), as risk factors for CVD. To investigate the possible involvement of the angiotensin system, an angiotensin II receptor antagonist, candesartan cilexetil, or a nonspecific vasodilator, hydralazine hydrochloride, was administrated via a subcutaneously implanted miniosmotic pump to the UN offspring from 9 to 17 weeks after birth. Administration of candesartan cilexetil, but not hydralazine hydrochloride, significantly protected against CE. While administration of not only candesartan cilexetil but also hydralazine hydrochloride prevented an augmentation of CPVF. The angiotensin system seems to make a critical contribution to the developmental origins of cardiac enlargement.
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