Release of vasoactive agents from the isolated perfused human ovary

R. William Stones, Amanda Vials, Pamela Milner, Richard W. Beard, Geoffrey Burnstock

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

Objective: To investigate local vascular control in the isolated perfused premenopausal human ovary by measuring flow-induced release of vasoactive substances. Design: Release of adenosine 5' triphosphate (ATP), substance P (SP), endothelin (ET), and vasopressin (AVP) from the ovarian vascular endothelium was estimated in perfusate under basal conditions and during two periods of increased flow. Main outcome measures: Vascular resistance; ATP, SP, ET and AVP release. Results: The mean ratio (pressure/flow during increased flow):(pressure/flow at basal flow) was 1.27 ± 0.04 for the first, and 1.15 ± 0.05 for the second period of increased flow (n = 10), indicating significant vasoconstriction (P < 0.01 and 0.05, respectively), present to a greater extent during the first period of increased flow compared to the second (P < 0.05). ATP release was seen in response to increased flow (n = 8, P < 0.05). From 12 ovarian bed preparations, five released ET and SP and three of these released AVP. Four of the five perfused ovaries that released peptides contained either a developing follicle or a corpus luteum while all those that showed no peptide release were inactive. Conclusions: ATP release may play a role in the local control of the human premenopausal ovarian vasculature independent of ovulatory status. Peptides may also contribute to local vascular control in the ovary and their release from predominantly active ovaries suggests a relationship between ovulation and vascular endothelial function.

Original languageEnglish
Pages (from-to)191-196
Number of pages6
JournalEuropean Journal of Obstetrics and Gynecology and Reproductive Biology
Volume67
Issue number2
DOIs
Publication statusPublished or Issued - 1 Jan 1996

Keywords

  • ATP
  • Endothelin
  • Endothelium
  • Human ovarian vascular bed
  • Shear stress
  • Substance P
  • Vasopressin

ASJC Scopus subject areas

  • Reproductive Medicine
  • Obstetrics and Gynaecology

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