Concentrations of amino acids in plasma from 45- to 47-week gestation mares and foetuses (Equus caballus)

S. C. Zicker, S. Vivrette, Quinton Rogers

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Concentrations of 16 of 24 amino acids in plasma of foetuses were significantly higher, while four of 24 were lower, than their concentration in maternal plasma. The higher foetal concentrations of amino acids in plasma are similar to other species, with some exceptions, and suggest that equine placenta actively transports and concentrates amino acids into the umbilical circulation. Concentrations of nine of 24 amino acids were significantly lower in plasma from the umbilical artery compared to plasma from the umbilical vein, while no significant differences were present between maternal artery and vein plasma. The umbilical venous-arterial difference in concentrations of amino acids in plasma suggests the foetus extracts amino acids from the umbilical circulation for catabolism or protein synthesis, as in other species.

Original languageEnglish (US)
Pages (from-to)173-179
Number of pages7
JournalComparative Biochemistry and Physiology -- Part B: Biochemistry and
Volume108
Issue number2
DOIs
StatePublished - Jan 1 1994

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Horses
Fetus
Plasmas
Amino Acids
Pregnancy
Umbilicus
Mothers
Umbilical Veins
Umbilical Arteries
Placenta
Veins
Arteries
Proteins

Keywords

  • Equus caballus
  • Foetuses
  • Gestation

ASJC Scopus subject areas

  • Biochemistry
  • Physiology

Cite this

Concentrations of amino acids in plasma from 45- to 47-week gestation mares and foetuses (Equus caballus). / Zicker, S. C.; Vivrette, S.; Rogers, Quinton.

In: Comparative Biochemistry and Physiology -- Part B: Biochemistry and, Vol. 108, No. 2, 01.01.1994, p. 173-179.

Research output: Contribution to journalArticle

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