Prostaglandin F in the peripheral plasma of the rhesus monkey in normal pregnancy and after the administration of dexamethasone and PGF2α

John R G Challis, I. John Davies, Kenneth J. Ryan, Andrew G Hendrickx

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The concentration of prostaglandin F (PGF) has been measured in the peripheral plasma of normal rhesus monkeys (Macaca mulatta) during the final third of gestation, and in monkeys treated with dexamethasone or PGF2α after day 145 of pregnancy. Daily administration of PGF2α (10-15 mg/day im) reliably induced abortion within 3-6 days. However, dexamethasone (8 mg/day im from day 145) had no effect on the length of gestation. The concentration of PGF in the femoral venous plasma of untreated or dexamethasone-treated monkeys was highly variable, both in serial samples taken from the same animal and in samples taken from different animals at the same time of gestation. There was no indication of an effect of dexamethasone treatment on the plasma PGF levels, nor did the concentration of PGF increase during late pregnancy before spontaneous parturition. These results show that the myometrium of the pregnant rhesus monkey is highly sensitive to exogenous PGF2α during late gestation. However, a significant increase in the peripheral plasma concentration of PGF prior to the onset of labor was not observed.

Original languageEnglish (US)
Pages (from-to)389-396
Number of pages8
JournalProstaglandins
Volume6
Issue number5
DOIs
StatePublished - Jun 10 1974

Fingerprint

Dinoprost
Prostaglandins F
Macaca mulatta
Dexamethasone
Plasmas
Pregnancy
Animals
Haplorhini
Labor Onset
Induced Abortion
Myometrium
Thigh
Personnel
Parturition

ASJC Scopus subject areas

  • Biochemistry
  • Endocrinology

Cite this

Prostaglandin F in the peripheral plasma of the rhesus monkey in normal pregnancy and after the administration of dexamethasone and PGF2α. / Challis, John R G; Davies, I. John; Ryan, Kenneth J.; Hendrickx, Andrew G.

In: Prostaglandins, Vol. 6, No. 5, 10.06.1974, p. 389-396.

Research output: Contribution to journalArticle

Challis, John R G ; Davies, I. John ; Ryan, Kenneth J. ; Hendrickx, Andrew G. / Prostaglandin F in the peripheral plasma of the rhesus monkey in normal pregnancy and after the administration of dexamethasone and PGF2α. In: Prostaglandins. 1974 ; Vol. 6, No. 5. pp. 389-396.
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