PMID: 9527535Apr 4, 1998Paper

Distribution of urocortin-like immunoreactivity in the central nervous system of the rat

The Journal of Comparative Neurology
Tamás KoziczA Arimura

Abstract

Urocortin was recently cloned from the rat midbrain. Urocortin is a member of the corticotropin releasing factor (CRF) peptide family and shows 45% sequence identity to CRF and 63% sequence identity to urotensin. It binds with a high affinity to CRF1 and CRF2 receptors, resulting in the stimulation of their adenylate cyclase activity. We used a polyclonal antibody against rat urocortin to define the distribution of urocortin-like immunoreactivity in the rat central nervous system. Several immunostained cell bodies were found in the supraoptic, paraventricular, and ventromedial hypothalamic nuclei. A large number of neurons with urocortin-like immunoreactivity were seen in the dorsolateral tegmental nucleus, in the linear and dorsal raphe nuclei, and in the substantia nigra. The most abundant immunoreactive (ir) perikarya were found in the Edinger-Westphal nucleus. Some neurons showed immunoreactivity in the interstitial nucleus of Cajal, the nucleus of Darkeschewitsch, and the periaqueductal gray. A dense immunoreactive fiber network was found in the lateral septal area. Some faintly stained axon terminals were observed among urocortin-ir perikarya in the supraoptic and paraventricular nuclei, in the central and periaqueductal ...Continue Reading

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Citations

Jan 25, 2014·Frontiers in Neuroendocrinology·Eric P ZorrillaGeorge F Koob
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