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17 beta estradiol/τερηδόνα
Ο σύνδεσμος αποθηκεύεται στο πρόχειρο
Σελίδα 1 από 21 Αποτελέσματα
Human preterm birth is associated with systemic and local changes in progesterone/17 beta-estradiol ratios.
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Σύνδεση εγγραφή
OBJECTIVE
The purpose of this study was to determine whether human preterm birth is associated with changes in 17 beta-estradiol and progesterone concentrations in maternal plasma and amniotic fluid.
METHODS
Forty healthy women in preterm labor with singleton pregnancies and intact membranes at 32
Osseous changes and osteosacomas in mice continuously fed diets containing diethylstilbestrol or 17 beta-estradiol.
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Σύνδεση εγγραφή
In a study on the long-term effects of dietary diethylstilbestrol or 17 beta-estradiol on C3H mice, estrogens induced a proliferation of osseous trabeculae and increased the incidence and hastened the development of osteofibrotic areas in the sterna. There were 6 osteosarcomas, 2 having metastases,
Effects of 17 beta-estradiol exposure on Xenopus laevis gonadal histopathology.
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Σύνδεση εγγραφή
The natural estrogen 17 beta-estradiol (E2) is a potential environmental contaminant commonly employed as a positive control substance in bioassays involving estrogenic effects. The aquatic anuran Xenopus laevis is a frequent subject of reproductive endocrine disruptor research; however,
Nasal absorption and metabolism of progesterone and 17 beta-estradiol in the rat.
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Σύνδεση εγγραφή
The utility of the nasal route for administration of progesterone and 17 beta-estradiol has been studied in rats. The results indicate that both steroids are rapidly absorbed from the nasal cavity. The bioavailability of 14C-radiolabeled progesterone administered nasally was found to be 100% of that
Effect of estrogen (17 beta-estradiol) on the susceptibility of mice to disseminated gonococcal infection.
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Σύνδεση εγγραφή
Studies of the effect of sex hormones on the susceptibility of mice to the disseminated gonococcal infection demonstrated significantly enhanced susceptibility of mice injected with estrogen (17 beta-estradiol). In mice treated with estradiol, bacteremia progressively developed within 12 h
The role of testosterone in the nasal cavity tumors induced by N-nitrosobis(2-oxopropyl)amine in rats.
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In a previous study in rats we have shown that castration prior to weekly administration of N-nitrosobis(2-oxopropyl)amine (BOP) prevents induction of nasal and paranasal cavity (NPNC) tumors, indicating androgen dependency of these neoplasms. To investigate the possible inhibitory effect of
Suppression of estrogenic activity of 17-beta-estradiol by beta-cyclodextrin.
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The suppressive effects of cyclodextrins (CDs) on the strong estrogenic activity of 17beta-estradiol (E2) in water environments were investigated in this study. Cyclodextrins are doughnut-shaped molecules that possess a hydrophobic cavity and a hydrophilic exterior. The cavity can incorporate
Prolonged clearance of intraperitoneal 16 alpha-[125I]iodo-17 beta-estradiol in presence of ascites.
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Radioestrogens have potential as adjunct therapeutic agents against ovarian carcinoma, because selected radionuclides can deposit lethal doses of radiation to tumor cells and many ovarian carcinomas and their metastases express estrogen receptors. Because intraperitoneal administration is a possible
An estrogen deficiency caused by ovariectomy increases plasma levels of systemic factors that stimulate proliferation and differentiation of osteoblasts in rats.
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To investigate the pathogenesis of accelerated bone formation in estrogen deficiency, diffusion chambers containing osteoblast-like cells isolated from newborn rat calvariae were transplanted into the peritoneal cavity of sham-operated (sham), ovariectomized (OVX) rats, and OVX rats with supplement
Treatment of osteoporosis with MMP inhibitors.
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Σύνδεση εγγραφή
In the current study, we examined the effects of minocycline on the osteopenia of ovariectomized (OVX) aged rats using the marrow ablation model. This injury induces rapid bone formation followed by bone resorption in the marrow cavity. Old female rats were randomly divided into five groups: sham,
Molecular determinants of ER alpha and ER beta involved in selectivity of 16 alpha-iodo-7 beta estradiol.
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Σύνδεση εγγραφή
The two known estrogen receptors, ER alpha and ER beta, are hormone inducible transcription factors that have distinct roles in regulating cell proliferation and differentiation. The natural ligand, 17 beta-estradiol (E2), binds with high affinity to both ER alpha and ER beta. However, a close
Endometrial safety with a low-dose intrauterine levonorgestrel-releasing system after 3 years of estrogen substitution therapy.
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OBJECTIVE
To evaluate the pharmacodynamic effects of a novel intrauterine drug delivery system, FibroPlant-levonorgestrel (LNG), on the endometrium in 24 postmenopausal women using estrogen substitution therapy (EST) to suppress climacteric symptoms.
METHODS
A 3-year non-comparative prospective
Novel estradiol derivatives labeled with Ru, W, and Co complexes. Influence on hormone-receptor affinity of several organometallic groups at the 17 alpha position.
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Σύνδεση εγγραφή
In order to elucidate the extent to which recognition of the estrogen receptor is influenced by addition of an organometallic substituent at the 17 alpha position, modification of 17 beta-estradiol at this position was carried out by using the organometallic groups -C identical to C(eta 5-C5H4)RuCp,
Biochemical characterization of peritoneal fluid in women during the menstrual cycle.
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Peritoneal fluid was collected at laparoscopy in women during the menstrual cycle and was assayed for protein and steroid hormone content. The total protein concentration in peritoneal fluid and the concentrations of the steroid hormone-binding proteins, transcortin and sex hormone-binding globulin,
Why perimenopausal women should consider to use a levonorgestrel intrauterine system.
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OBJECTIVE
The use of a levonorgestrel intrauterine system (LNG-IUS) is useful in preventing pregnancy and for the treatment of menstrual disturbances. A smooth or symptom-free transition to and through menopause is possible when LNG-IUS is combined with estrogen therapy. Unfortunately the majority
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