ESTROGEN SULFATASE ACTIVITY IN ENDOMETRIUM AND FETAL MEMBRANES OF LATE GESTATIONAL AND PARTURIENT COWS

被引：9

作者：

JANSZEN, BPM ^{[1
]}

BEVERS, MM ^{[1
]}

VANTOL, HTM ^{[1
]}

DIELEMAN, SJ ^{[1
]}

VANDERWEIJDEN, GC ^{[1
]}

TAVERNE, MAM ^{[1
]}

机构：

[1] UNIV UTRECHT, FAC VET MED, DEPT HERD HLTH & REPROD, 3584 CL UTRECHT, NETHERLANDS

来源：

ANIMAL REPRODUCTION SCIENCE | 1995年 / 37卷 / 3-4期

关键词：

CATTLE; ENDOCRINOLOGY; ESTROGEN SULFATASE; ENDOMETRIUM; EMBRYOLOGY;

D O I：

10.1016/0378-4320(94)01344-L

中图分类号：

S8 [畜牧、动物医学、狩猎、蚕、蜂];

学科分类号：

0905 ;

摘要：

To estimate oestrogen-sulphatase activity in bovine non-caruncular endometrium, allanto-chorion, allanto-amnion and intact placentomes (designated as placenta), homogenates of these tissues were incubated, using oestrone sulphate as a substrate. Tissues had been collected from two different groups of animals: during laparotomy in cows on Day 262 of gestation (n=6), and during caesarean section in parturient cows (n=6). Sulphatase activity was detected in endometrium, allanto-chorion and placenta, but not in the allantoamnion. Placental tissue showed a substantially higher conversion rate than the endometrium. Only in the placenta from parturient animals was sulphatase activity significantly higher than in placentomes obtained on Day 262. It was concluded that in the pregnant cow not only the placenta, but also non-caruncular endometrium and allanto-chorion have the capability to deconjugate oestrogens, and that an increased sulphatase activity in the placenta at parturition might contribute to the parturient rise of free oestrogens in maternal blood.

引用

页码：251 / 256

页数：6

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