Effect of oral fat on plasma levels of neurotensin and neurotensin fragments in humans - Characterization by high-pressure liquid chromatography

Edwin J. Draviam, James R. Upp, George H. Greeley, Courtney M. Townsend, James C. Thompson

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

The effect of ingestion of fat (Lipomul 1 g/kg) on the circulating levels of neurotensin (NT1-3) and amino-terminal fragments (NT1-8, NT1-11) and carboxy-terminal fragment (NT8-13) of NT were investigated in six healthy male volunteers. NT and NT fragments were extracted from plasma collected at 0, 15, 30, and 60 min after ingestion of fat, and the plasma levels of NT1-13 and NT fragments were characterized using high-pressure liquid chromatography and radioimmunoassay techniques. Significant elevations of plasma levels of NT1-8, NT1-11, and NT1-13 were observed at 15, 30, and 60 min after fat ingestion. The maximum elevations were 273% for NT1-8, 234% for NT1-11, and 54% for NT1-13. NT8-13 levels failed to rise significantly when compared to basal levels. These findings indicate that both the aminoterminal and carboxyterminal fragments of NT are either released along with intact NT or are formed as metabolites from NT1-13 in response to ingestion of fat in man.

Original languageEnglish (US)
Pages (from-to)200-204
Number of pages5
JournalDigestive Diseases and Sciences
Volume35
Issue number2
DOIs
StatePublished - Feb 1990

Keywords

  • high-pressure liquid chromatography
  • neurotensin
  • peptide
  • radioimmunoassay

ASJC Scopus subject areas

  • Physiology
  • Gastroenterology

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