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Alpha-Melanocyte-stimulating hormone (MSH) is a potent anti-inflammatory agent in many models of inflammation, suggesting that it inhibits a critical step common to different forms of inflammation. We showed previously that alpha-MSH inhibits nitric oxide (NO) production in cultured macro-phages. To determine how alpha-MSH acts in vivo, we induced acute(More)
In conscious rats bearing venous and cerebroventricular cannulae, central administration of the alpha 1-adrenergic agonist methoxamine stimulated the secretion of ACTH, and the effect was reduced by the alpha 1-antagonist prazosin. Methoxamine was more potent in stimulating ACTH secretion when injected icv than peripherally, suggesting that the stimulant(More)