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EFFECTS OF SECTION OF UTERO-OVARIAN VASCULAR CONNECTIONS ON THE DURATION OF PSEUDOPREGNANCY IN THE RAT

Summary.: Two experiments were performed on female Hooded Wistar rats to determine the effects of section of utero-ovarian connections on the duration of pseudopregnancy.

Ligation and section of the anterior uterine blood vessels on Day 6 of pseudopregnancy caused a prolongation of the pseudopregnancy during which the operation was performed, and also of the subsequent pseudopregnancy (P<0·01). Neither section of the Fallopian tube nor that of the mesosalpinx and broad ligament significantly affected the duration of pseudopregnancy.

When the anterior uterine vessels were sectioned separately, it was shown that severing the artery led to a prolongation of pseudopregnancy (P<0·001). Section of the vein did not significantly affect the duration of pseudopregnancy.

These results suggest that the effects on pseudopregnancy of section of utero-ovarian connections depend primarily on interruption of the anterior uterine artery.

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