Immunohistochemical localization of the neuropeptide, pituitary adenylate cyclase activating polypeptide (PACAP), in human and primate hypothalamus.
A 38 residue neuropeptide was recently isolated from ovine hypothalamus in our laboratory, and named pituitary adenylate cyclase activating polypeptide (PACAP38) based on its biological activity. Rabbit antisera against synthetic PACAP27 were characterized by ELISA for immunohistochemical use. PACAP-immunoreactive neuronal elements having similar distributions were demonstrated in both human and spider monkey hypothalami. Many PACAP-immunoreactive cell bodies were present in the supraoptic and paraventricular nuclei. Immunopositive nerve fiber networks were stained throughout the hypothalamus, including in both external and internal zones of the tuber cinereum, close to the transition of the pituitary stalk (median eminence). These results suggest that PACAP plays multifunctional roles as a hypophysiotropic hormone, neurohypophysial hormone, neurotransmitter or neuromodulator in higher vertebrate species including man.
Vigh
S
S
U.S.-Japan Biomedical Research Laboratories, Tulane University Hebert Center, Belle Chasse, LA 70037.
Arimura
A
A
Köves
K
K
Somogyvári-Vigh
A
A
Sitton
J
J
Fermin
C D
CD
D000595:Amino Acid Sequence; D000818:Animals; D006801:Humans; D007031:Hypothalamus / Q000033:anatomy & histology / Q000378:metabolism*; D007150:Immunohistochemistry; D008969:Molecular Sequence Data; D009479:Neuropeptides / Q000737:chemistry / Q000378:metabolism*; D051219:Pituitary Adenylate Cyclase-Activating Polypeptide; D012453:Saimiri
C495401:ADCYAP1 protein, human; D009479:Neuropeptides; D051219:Pituitary Adenylate Cyclase-Activating Polypeptide