A chronic, low-dose regimen of the antiprogestin ZK 137 316 prevents pregnancy in rhesus monkeys.

A chronic, low-dose regimen of the antiprogestin ZK 137 316 prevents pregnancy in rhesus monkeys.
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抗孕激素 ZK 137 316 的长期、低剂量治疗可防止恒河猴怀孕。

DOI:
10.1093/humrep/13.8.2132
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发表时间:
1998
期刊:
Human reproduction (Oxford, England)
影响因子:
--
通讯作者:
Stouffer,RL
Stouffer,RL
中科院分区:
--
文献类型:
--
作者:
Zelinski-Wooten,MB;Chwalisz,K;Iliff,SA;Niemeyer,CL;Eaton,GG;Loriaux,DL;Slayden,OD;Brenner,RM;Stouffer,RL

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先前报道连续给予低剂量的抗孕酮ZK 137 316可使猕猴的卵巢/月经周期正常,但会破坏子宫内膜的生长。在雌性恒河猴(每组10只)中检测了该方案的避孕效果,在与已证明具有生育能力的雄性动物连续合笼之前和期间,每天给予溶剂(对照)、0.01或0.03 mg ZK 137 316/kg体重,持续30天。给药持续至确认妊娠或与雄性动物成对饲养后5个月。在所有雌性动物中均观察到交配和阴道精子。对照组的累积妊娠率为90%(9/10)。在接受0.01 mg/kg剂量的10只动物中,4只在配对的前2个月内受孕(P = 0.06),未进一步受孕。0.03 mg/kg组未观察到妊娠(P < 0.01)。与0.03 mg/kg组相比,0.01 mg/kg组月经及时、明显出现的频率更高。然而,在最后一个治疗周期期间,两组的卵巢中均存在黄体,表明发生了卵巢周期。因此,长期给予低剂量ZK 137 316,允许持续的卵巢周期性和高发生率的及时月经,防止怀孕的非人灵长类动物。该方案可能为女性提供一种新的避孕方法。
Continual administration of low doses of the antiprogestin ZK 137 316 was previously reported to permit ovarian/menstrual cyclicity, but disrupt endometrial growth in macaques. The contraceptive efficacy of this regimen was tested in female rhesus monkeys (10 per group) treated daily with vehicle (controls), 0.01 or 0.03 mg ZK 137 316 per kg body weight for 30 days before and during continual co-habitation with males of proven fertility. Treatment continued until confirmation of pregnancy or for 5 months after pair-housing with males. Mating and vaginal sperm were evident in all females. A cumulative pregnancy rate of 90% (9/10) was observed in the controls. Of the 10 animals receiving 0.01 mg/kg, four conceived during the first 2 months of pairing (P = 0.06) with no further conceptions. No pregnancies were observed in the 0.03 mg/kg group (P < 0.01). Timely, overt menses occurred at a higher frequency in the 0.01 mg/kg group than the 0.03 mg/kg group. However, corpora lutea were present in ovaries from both groups during the last treatment cycle, indicating that ovarian cycles occurred. Thus, chronic administration of low-dose ZK 137 316 that permits continued ovarian cyclicity and a high incidence of timely menses, prevents pregnancy in non-human primates. This regimen may provide a novel method of contraception for women.
DOI: --
发表时间: 1980
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