glucagon-(1-21) and glucagon-like-peptide-1-(1-37)

The trophic effect of glucagon-(1-21)-peptide on rat ileal epithelial cells was studied in vitro. Glucagon-(1-21)-peptide stimulated [3H]thymidine incorporation of mucosal cells significantly in a dose-dependent manner. Then glucagon-related peptides which have common sequences with glucagon-(1-21)-peptide were also tested. The biological potencies to augment [3H]-thymidine uptake were closely related with their amino-acid residues of N-terminal region. The result suggests that the N-terminal amino-acid sequence of glucagon molecule plays an important role in intestinal cell growth.

Topics: Amino Acid Sequence; Animals; Cell Division; Dose-Response Relationship, Drug; Glucagon; Glucagon-Like Peptide 1; Glucagon-Like Peptides; Ileum; Intestinal Mucosa; Male; Peptide Fragments; Peptides; Rats; Rats, Inbred Strains; Thymidine