The contractability of the Fallopian tubes is instrumental in the transport of the ovum to the uterus. Various studies have been done to determine the effect of different hormones on this property of the tubes, but they have been inconclusive. 34 @entity1 who were scheduled for salpingectomies for reasons of birth control and who had been using @entity134 contraceptives for at least 3 months prior to the operation were selected for study. Half the sample had used pure progestagens (Depo-Provera or @entity18831 ) and half had used a combined preparation ( @entity69279 + @entity69280 or @entity69281 ). All were between 29-41 years of age with numbers of pregnancies ranging from 5 to 21. The intensity and frequency of the contractions and the general activity of the isthmus portion of the tubes were studied for 10-minute periods in 2 cm segments. Also, histological studies were done using hematoxylin eosin tincture and Van Giessen tincture, and histochemical tests were performed. The 17 cases on combined orals exhibited a significantly higher rate of activity than those on pure @entity7828 , but were also subject to contractions of greater intensity. The histochemical studies showed a decrease in the energetic material and in the enzymatic activity related to @entity1735 metabolism in the tubes of the @entity1871 group. The @entity308 of motor activity and energetic metabolism was, however, neutralized by administering @entity172 .

[Effects of various steroids on the morphology and function of XXXX fallopian tubes].

@entity1 :: ('9606', 'Species') :: ['patients'] @entity172 :: ('MESH:D004967', 'Chemical') :: ['estrogens'] @entity308 :: ('MESH:D003866', 'Disease') :: ['depression'] @entity1735 :: ('CHEBI:16646', 'Chemical') :: ['carbohydrate'] @entity7828 :: ('MESH:D011372', 'Chemical') :: ['progestins'] @entity69279 :: ('MESH:D011800', 'Chemical') :: ['quinestrol'] @entity134 :: ('CHEBI:35341', 'Chemical') :: ['steroid'] @entity1871 :: ('CHEBI:59826', 'Chemical') :: ['progestin'] @entity18831 :: ('MESH:D002715', 'Chemical') :: ['chlormadinone'] @entity69280 :: ('MESH:C100039', 'Chemical') :: ['quingestanol'] @entity69281 :: ('MESH:C007242', 'Chemical') :: ['deladroxate']
@entity1 :: (9606,Species) :: ['human']
