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Journal of Andrology, Vol 15, Issue 6 510-520, Copyright © 1994 by The American Society of Andrology
JOURNAL ARTICLE |
C. Hauser-Kronberger, G. W. Hacker, A. H. Graf, D. Mack, F. Sundler, O. Dietze and J. Frick
Institute of Pathological Anatomy, Salzburg General Hospital, Austria.
In the present study, the distribution of neuropeptides in the human penis is demonstrated by immunohistochemistry (IHC). IHC screening detected a complex network of nerve fibers containing vasoactive intestinal polypeptide (VIP), peptide histidine-methionine (PHM), prepro-VIP (111-122), neuropeptide Y (NPY), C-flanking peptide of NPY (C-PON), calcitonin gene-related peptide, substance P, and galanin immunoreactivities. Special attention was also given to the recently isolated, VIP-related lizard peptide helospectin, which could also be detected in neuronal elements in the penis. Colocalization studies showed the coexistence of VIP, PHM, and partly helospectin, and of NPY with C-PON within nerve fibers in the cavernous and spongious body, the glans penis, and the urethra.
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