?-lipotropin in brain: Localization in hypothalamic neurons by immunoperoxidase technique

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Abstract
β-Lipotropin (β-LPH) has been localized in hypothalamus and pituitary of sheep and ox by the immunoperoxidase technique. In both species β-LPH was found in perikarya of arcuate neurons as well as in cells of the anterior and intermediate lobes of the pituitary. A large number of immunoreactive axons were found in the arcuate region; some appeared to innervate other neurons and others projected to portal capillaries. Stained fiber segments were also scattered throughout the hypothalamus. The presence of β-LPH in hypothalamic neurons supports the possibility that brain β-LPH may be a precursor for opiate-like or other peptides which may be involved in neuromodulation or neurohormonal activities.