Journal of Clinical Endocrinology & Metabolism, Vol 58, 919-924, Copyright © 1984 by Endocrine Society

ARTICLES

Immunoreactive corticotropin and corticotropin-releasing factor in human hypothalamus, adrenal, lung cancer, and pheochromocytoma

T Suda, N Tomori, F Tozawa, H Demura, K Shizume, T Mouri, Y Miura and N Sasano

Immunoreactive corticotropin-releasing factor (I-CRF) and ACTH (I-ACTH) were examined using RIA, immunoaffinity chromatography, and gel filtration chromatography in human hypothalamus, adrenal (cortex and medulla), lung cancer, and pheochromocytoma. I-CRF and I-ACTH were present in these tissues. Gel filtration of I-ACTH in the adrenal, pheochromocytoma, and lung cancer showed the presence of larger amounts of I-ACTH with large molecular weight forms in contrast to the hypothalamus. Gel filtration of I-CRF in these tissues showed the main peak eluted at the position of synthetic rat CRF. High performance liquid chromatography of this main peak showed two components which eluted in the positions of synthetic rat CRF and oxidized CRF. These elution positions were the same in all tissues and identical with those in the hypothalamus. These results suggest the presence of I-ACTH and I- CRF in these tissues and that CRF outside the brain is identical to hypothalamic CRF.

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