The distribution of polypeptide YY (PYY)- and pancreatic polypeptide (PP)-immunoreactive cells in the domestic fowl |
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| Authors: | M El-Salhy E Wilander L Grimelius L Terenius J M Lundberg K Tatemoto |
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| Institution: | (1) Departments of Pathology and Pharmacology, University of Uppsala, P.O. Box 553, S-75122 Uppsala, Sweden;(2) Departments of Pharmacology and Biochemistry, Karolinska Institute, Stockholm, Sweden |
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| Abstract: | Summary The distribution of the polypeptide which has an N-terminal tyrosine and a C-terminal tyrosine (PYY)- and pancreatic polypeptide (PP)-immunoreactive cells were investigated in the gut of the domestic fowl. PYY-immunoreactive cells were observed in the duodenum and jejunum. PP-immunoreactive cells were seen in the duodenum, jejunum, ileum and colon. Both PYY- and PP-immunoreactive cells were extended from the basal lamina to the gut lumen i.e. of open type. PYY-immunoreactive cells occurred mainly in the basal and middle portion of the villi. On the other hand, PP-immunoreactive cells were located mostly in the crepts. The occurrence of PYY-immunoreactive cells in the upper part of the small intestine is rather similar to that of amphibians and reptiles, than to that of mammals, where PYY-immunoreactive cells are located in the distal part of the small intestine and in the large intestine.Preliminary results were given in abstract form in the 4th International Symposium on Gastrointestinal Hormones, held in Stockholm, June 20–23, 1982 |
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