Summary
In this study we report the localisation of PYY immunoreactivity in intestinal mucosa endocrine (EG) cells containing glucagon-related peptides and also in foetal pancreatic A cells of rat and man. Radioimmunoassay of human foetal pancreatic extracts revealed the presence of PYY immunoreactivity, the concentration of which declined with age (from 65.42 pmol/g at week 20 to 17.0 pmol at week 40; correlation coefficient=−0.893), in contrast to the amount of glucagon which remained statistically constant throughout the same foctal period. The identity of this PYY immunoreactive material with the original 36 amino acid porcine peptide has been shown by high pressure liquid chromatography (HPLC).
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Ali-Rachedi, A., Varndell, I.M., Adrian, T.E. et al. Peptide YY (PYY) immunoreactivity is co-stored with glucagon-related immunoreactants in endocrine cells of the gut and pancreas. Histochemistry 80, 487–491 (1984). https://doi.org/10.1007/BF00495439
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DOI: https://doi.org/10.1007/BF00495439