Somatostatin immunoreactivity in the cat adrenal medulla. Localization and characterization.
Somatostatin-like immunoreactivity was detected within the adrenal gland of the cat using specific monoclonal antibodies. Immunohistochemical studies demonstrated a few somatostatin-immunoreactive nerve fibers within the adrenal medulla. In addition, a large population of chromaffin cells in the cat adrenal medulla displayed intense somatostatin-like immunoreactivity. Similar cells were not observed in rat or guinea pig adrenal glands, although they were found in human material. The somatostatin-positive cells in the cat adrenal medulla often possessed short immunoreactive processes similar to those seen in somatostatin-immunoreactive paracrine cells of the gut. Characterization of the somatostatin-like immunoreactivity of the cat adrenal by high performance liquid chromatography and radioimmunoassay indicated that somatostatin-28 may account for over 90% of the observed immunoreactivity. It is suggested that somatostatin-28 may have a paracrine or endocrine role in the feline adrenal medulla.
D000313:Adrenal Medulla / Q000032:analysis*; D000818:Animals; D002415:Cats; D002851:Chromatography, High Pressure Liquid; D006168:Guinea Pigs; D006801:Humans; D007124:Immunoenzyme Techniques; D008297:Male; D011863:Radioimmunoassay; D051381:Rats; D013004:Somatostatin / Q000032:analysis*
D013004:Somatostatin