RESUMEN
OBJECTIVE: to determine whether ovarian steroids directly regulate FSH release and B subunit synthesis at the pituitary level METHODS: In vitro study. After applying ovarian steroids in cultured rat anterior pituitary cells, we evaluate the amount of relesed FSH and FSH B subunit using dot-blot hybridization. RESULTS: Estradiol alone or GnRH-induced did not modulate FSH release and B ubunit synthesis. Although progesterone alone did not alter FSH release, GnRH-induced FSH release was significantly augmented by the treatment of progesterone. Progesterone alone stimulated FSH B mRNA level. Significant increase in FSH B mRNA level was also observed by the combined treatment of progesterone and GnRH. The effects of progesterone on GnRH-induced FSH release was significantly reduced by the treatment of progesterone antagonist, RU 486. The treatment with progesterone antagonist, RU 486 also abolished progesterone-induced FSH B subunit mRNA biosynthesis. CONCLUSION: From these results, it is, therefore, concluded that estradiol does not seem to be a major regulator for FSH synthesis but progesterone may exert its action at the pituitary level for the synthesis and release of FSH.
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Animales , Ratas , Estradiol , Estrógenos , Hormona Liberadora de Gonadotropina , Mifepristona , Progesterona , ARN Mensajero , EsteroidesRESUMEN
OBJECTIVE: To evaluate prospectively the efficacy and accuracy of transvaginal sonography(TVS), saline infusion sonohysterography(SIS) and hysteroscopy in the exploration of the uterine cavity. METHODS: 71 consecutive patients were evaluated with SIS who showed abnormal TVS findings, using saline instilled through endocervically placed balloon catheter with concurrent vaginal sonography. Among them, 41 patients also underwent hysteroscopy and surgery. Transvaginal sonography, sonohysterography, hysteroscopy were compaired with pathologic reports. RESULTS: Fifty-five of 71 sonohysterogram(77.5%) showed abnormal findings, Among them 41 patients have done hysteroscopy and biopsy. According to pathologic reports, sixteen patients were noted to have myoma(39.0%), twelve patients had polyps (21.3%), and both showed most frequent lesions. TVS, SIS, and hysteroscopy had a sensitivity of 94.4%, 91.1%, 94.4%, and a specificity of 40%, 42.8%, 60.0%, respectively and showed not so much different in detection rate. In case of submucosal myoma and polyps, hysteroscopy showed 100% sensitivity, and 92% specificity and showed much higher detection rate compared with SIS (81.2%, 92.0%). CONCLUSION: Transvaginal sonography and sonohysterography are good office diagnostic test in case of detecting variable gynecologic intrauterine abnormalities.
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Humanos , Biopsia , Catéteres , Pruebas Diagnósticas de Rutina , Histeroscopía , Mioma , Pólipos , Estudios Prospectivos , Sensibilidad y Especificidad , Hemorragia UterinaRESUMEN
Two patients, bulging fetal membrane accompanied with cervical dilatation & effacement in the late second-trimester, were treated by modified Shirodkar method. Pregnancies were prolonged effectively and viable fetuses were delivered in both cases. Our cases may help make objective decision prior to attempting cerclage placement when cervix is markedly dilated and something should be done to save pregnancy.
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Femenino , Humanos , Embarazo , Cuello del Útero , Membranas Extraembrionarias , Feto , Primer Periodo del Trabajo de Parto , Incompetencia del Cuello del ÚteroRESUMEN
Suction curettage is a relatively safe procedure to induce abortion of first trimester pregnancy with a very low complication rate. But, in order to do that, cervix should be dilated enough to pass operating devices. We experienced a case of first trimester pregnancy terminated successfully using transvaginal misoprostol when suction curettage was failed due to severely cervical stenosis after LEEP conization.