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Paraventricular Abstract 参加优秀poster评选Background:nucleus (PVN) is a key component of the central neurocircuitry of the cardiac sympathetic overdrive in sympathetic afferent reflex (CSAR) which involve in hypertension,chronic heart failure and diabetes.In this study,we investigated whether or not the CSAR is enhanced in obese rats and nitric oxide (NO) in the PVN participates in superoxide anions-induced CSAR enhancement and sympathoexcitation of obese rats.