title: Comparative distribution of vasoactive intestinal polypeptide (VIP), substance P and PHI in the enteric sphincters of the cat.
abstract: In the feline gastrointestinal tract, the neuropeptides, substance P, VIP and PHI were investigated by specific radioimmunoassays and immunocytochemistry. The concentrations of all 3 peptides and the level of peptidergic innervation were significantly less in the anal sphincter than elsewhere, whereas no significant differences were seen between other sphincter and non-sphincter regions.
mesh_terms: D001003:Anal Canal / Q000378:metabolism; D000818:Animals; D002415:Cats; D004064:Digestive System / Q000378:metabolism*; D004943:Esophagogastric Junction / Q000378:metabolism; D005768:Gastrointestinal Hormones / Q000378:metabolism; D009130:Muscle, Smooth / Q000032:analysis; D010451:Peptide PHI; D010455:Peptides / Q000378:metabolism*; D011708:Pylorus / Q000378:metabolism; D011863:Radioimmunoassay; D013373:Substance P / Q000378:metabolism*; D014660:Vasoactive Intestinal Peptide / Q000378:metabolism*
chemical_list: D005768:Gastrointestinal Hormones; D010451:Peptide PHI; D010455:Peptides; D013373:Substance P; D014660:Vasoactive Intestinal Peptide