The rise of plasma ACTH induced by ether is mediated through neural pathways entering the medial basal hypothalamus

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Abstract
The effect of ether stress on the release of immunoreactive ACTH was studied in rats with an antero-lateral cut around the medial basal hypothalamus. Ether failed to raise the plasma ACTH level of rats in which an antero-lateral hypothalamic cut and adrenalectomy were performed 7-8 days previously. Plasma ACTH was also unchanged in rats exposed to ether 2 h after an antero-lateral cut. Intact neural pathways entering the medial basal hypothalamus from the antero-lateral direction apparently are necessary for the ACTH releasing action of ether stress.