The gentle art of saying NO: how nitric oxide gets things done in the hypothalamus.

Vincent Prevot and colleagues discuss the role of neuronal nitric oxide (NO) in the regulation of key physiological processes controlled by the preoptic region of the hypothalamus, including reproduction. How deregulation of NO production might be involved in the pathophysiology of brain diseases, for which hormonal imbalances during postnatal development could be a risk factor, is also discussed.