Comparative distribution of vasoactive intestinal polypeptide (VIP), substance P and PHI in the enteric sphincters of the cat.
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.
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*
D005768:Gastrointestinal Hormones; D010451:Peptide PHI; D010455:Peptides; D013373:Substance P; D014660:Vasoactive Intestinal Peptide