ISSN:
1573-7330
Keywords:
ovum capture
;
ovum transport
;
intratubal pressure
;
β2-adrenoreceptor stimulant
;
prostaglandin F2α
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Abstract Purpose: Our purpose was to elucidate the roles of the ampullar and isthmic portions of the oviduct and the effects of drugs on oviductal contractility. Methods: Prostaglandin F 2α (PGF 2α; Ono Pharmaceuticals, Osaka) and oxytocin (Atonin-O; Teikoku Hormone Manufacturing Co. Ltd., Tokyo) were used to stimulate oviductal contractility, and ritodrine hydrochloride (Utemerin; Solvay-Duphar Corp., Denmark) to inhibit the contractility. Results: Both PGF 2α and Atonin-O were involved in ovum capture by the ampullar oviduct by stimulating contractility, thus altering the intraductal pressures. Utemerin is effective in inhibiting the enhanced contractility induced by PGF 2α and Atonin-O. Conclusions: Variations in pressure of the ampullar portion of the oviduct seem necessary for the capture of ova expelled from the ovary. Once in the isthmic portion of the oviduct, transport appears to be under the influence of ciliary activity rather than variations in contractility.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1020546014437
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