Uptake, inter-organ distribution and metabolism of dietary putrescine in the rat

S Bardocz, E L Hughes, George Grant, David Stanley Brown, T J Duguid, A Pusztai

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8 Citations (Scopus)

Abstract

The movement of a single dose of C-14-putrescine in the lumen of the rat gastrointestinal tract was followed for 3 hours after intragastric intubation. Putrescine progressed in the gut lumen in a wave-like fashion and was absorbed in the small bowel. Maximal uptake was observed at 2 hours; therefore, this time-point was selected to measure the concentration dependency of putrescine uptake by the small intestine and distribution between the vital organs in a wide concentration range (1/10 to 100 times the dietary input). Putrescine uptake by the small bowel was likely to be by passive diffusion, because the absorption was in proportion to input. The fate of putrescine was determined in the plasma, small bowel, liver, and skeletal muscle by measuring the radioactivity of the polyamines, their acetyl derivatives, and amino acids at physiologic concentrations. It appears that approximately 10% of the dietary input reaches the putrescine body pool. (J. Nutr. Biochem. 9:332-338, 1998) (C) Elsevier Science Inc. 1998.

Original languageEnglish
Pages (from-to)332-338
Number of pages7
JournalThe Journal of Nutritional Biochemistry
Volume9
Issue number6
Publication statusPublished - Jun 1998

Keywords

  • putrescine
  • luminal uptake
  • small bowel
  • skeletal muscle
  • liver
  • plasma
  • internal organs
  • luminal polyamines
  • mucosal growth
  • phaseolus-vulgaris
  • epithelial-cells
  • obstruction
  • transport
  • oxidase
  • supplemented diet
  • small intestine
  • bioavailability
  • absorption
  • biological accumulation
  • rat
  • polyamine
  • nutrition
  • feeding
  • digestive system
  • rodentia
  • mammalia
  • vertebrata

Cite this

Bardocz, S., Hughes, E. L., Grant, G., Brown, D. S., Duguid, T. J., & Pusztai, A. (1998). Uptake, inter-organ distribution and metabolism of dietary putrescine in the rat. The Journal of Nutritional Biochemistry, 9(6), 332-338.