The transport of an intact oligopeptide across adult mammalian jejunum

Kazuo Takaori, James Burton, Mark Donowitz

Research output: Contribution to journalArticlepeer-review

32 Scopus citations


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 languageEnglish (US)
Pages (from-to)682-687
Number of pages6
JournalBiochemical and Biophysical Research Communications
Issue number2
StatePublished - Jun 13 1986
Externally publishedYes

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology


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