The passage of an intact nonapeptide across adult rabbit jejunum mounted in an Ussing Chamber is demonstrated with an HPLC system which resolves the renin inhibitor Pro-His-Pro-Phe-His-Leu-Phe-Val-[3H]Phe from all labelled proteolytic cleavage products. Permeability of the peptide (0.016 cm hr-1) is approximately one-seventh that observed for the actively transported 3-O-methyl glucose (0.104 cm hr-1). Flux of the peptide is not changed by the absence of sodium. This study shows that adult mammalian intestine can transport intact oligopeptides and suggests that it will be feasable to develop orally active peptide drugs.
|Original language||English (US)|
|Number of pages||6|
|Journal||Biochemical and Biophysical Research Communications|
|State||Published - Jun 13 1986|
ASJC Scopus subject areas
- Molecular Biology
- Cell Biology