Abstract
Novel antiemetic agents such as the newly approved aprepitant (Emend) target receptors for substance P, known as neurokinin-1 (NK(1)) receptors. When NK(1) receptors are blocked in the vomiting center of the brainstem, chemotherapy-induced emesis is reduced. It is possible that blocking NK(1) receptors elsewhere in the CNS will lead to therapeutic actions in depression and other stress-related disorders.

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