雌激素用于预防去势大鼠失骨时对宫内膜的影响

选用４月龈ＳＤ雌性大鼠随机分为切除卵巢去势组、假手术组、切除卵巢＋尼尔雌醇组（０．１５ｍｇ／１００ｇ体重，每周１次）及切除卵巢＋炔雌醇（０．２μｇ／１００ｇ体重，ｑｄ×５）组。用计算机图象分析技术，对各组大鼠宫内膜进行形态计量测定，以探讨雌激素预防去势大鼠骨质疏松时宫内膜的影响。结果显示：用药１０周，尼尔雌醇炔雌醇能有效预防去势大鼠的失骨，尼尔雌醇组宫内膜增生不明显，为增生早期的改变；炔雌醇组宫内

An endometrium morphometry study on ovariectomized rats subjected to nilestriol and estradiol replalcement therapies]

This study was designed to evaluate the effect of estrogen on rat endometrium and compare the results of Nilestriol and Estradiol replacement therapies for preventing osteoporosis in ovariectomized rats. Forty 4-month old SD female rats were randomly divided into four groups, namely sham operation, bilateral ovariectomy, ovariectomy plus supplementary ethinyl estradiol (0.2 microgram/100 g B. W. qd x 5), and ovariectomy plus supplementary Nilestriol (0.15 mg/100 g B. W. once a week). Computerized image analyzer was used to evaluate the endomitrial pathological changes 10 weeks later. The results showed an atrophied endometrium in ovariectomized group, a slightly proliferative endometrium in Nilestriol treated group, and a markedly proliferative endometrium with local atypical hyperplasia in estradiol treated group. The difference between group 3 and group 4 in morphometry was significant (P < 0.5). These suggest the relative safety of Nilestriol replacement therapy for preventing menopausal osteoporosis.