Human Reproduction, Vol. 14, No. 1, 151-155,
January 1999
© 1999 European Society of Human Reproduction and Embryology
The action of vasoconstrictive agents on human tubal arteries
1 Department of Obstetrics and Gynaecology, University of Göteborg, Sahlgrenska University Hospital, SE 413 45 Göteborg, 2 Department of Histology, University of Göteborg, SE 413 90 Göteborg and 3 Department of Women's and Children's Health, Section of Obstetrics and Gynaecology, University of Uppsala, Akademiska Sjukhuset, SE-751 85 Uppsala, Sweden
The aim of this investigation was to compare the response of small arteries of the human tuboovarian vasculature to certain vasoactive agents. Ring preparations of the arteries were isolated and mounted in tissue chambers for isometric recording of wall tension. The arteries were exposed to the vasoactive agents adrenalin, prostaglandin F2
and two vasopressin analogues. Adrenalin, prostaglandin F2
, lysinvasopressin and triglycyl-lysinevasopressin all produced powerful vasoconstriction, the greatest efficacy being shown by and lysinevasopressin. The maximum response occurred after addition of a third compound to a combination of two, irrespective of which combination was used. Adrenalin showed faster contraction velocity than the other agents. The results indicate that the human tuboovarian arteries may be constricted by a variety of physiological and pharmacological stimuli, at least partly acting via different effector mechanisms. It is proposed that these vasoconstrictive agentsalone or in combinationmay be useful in conjunction with gynaecological endoscopic surgery, e.g. in tubal pregnancy or ovarian cysts.
Key words: blood vessels/ectopic pregnancy/oviduct/prostaglandin/vasopressin
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