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Ovulation indıction

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https://read.qxmd.com/read/26399935/characterization-and-manipulation-of-reproductive-cycles-in-the-jaguar-panthera-onca
#1
Serena A Barnes, J Andrew Teare, Sheryl Staaden, Lara Metrione, Linda M Penfold
Basic reproductive information in female jaguars (Panthera onca) is lacking, thus longitudinal fecal samples from seven females were analyzed via enzyme immunoassay to measure estradiol and progestin metabolites throughout the year. Mean estrus length of 194 estrus periods measured hormonally was 6.5±0.3d, mean peak fecal estradiol concentration was 138.7±5.7ng/g; and in one female, estrus resumption occurred approximately 15d post-partum. Ovulation, as indicted by sustained elevated progestin concentrations (>20d), was successfully induced one time by treatment with exogenous hormones in one female and by physical vaginal stimulation in two females a combined total of three times...
January 1, 2016: General and Comparative Endocrinology
https://read.qxmd.com/read/16857685/the-caenorhabditis-elegans-cpi-2a-cystatin-like-inhibitor-has-an-essential-regulatory-role-during-oogenesis-and-fertilization
#2
Sarwar Hashmi, Jun Zhang, Yelena Oksov, Qiongmei Ji, Sara Lustigman
In the present study, we characterized a sterile cpi-2a(ok1256) deletion mutant in Caenorhabditis elegans and showed that CPI-2a has an essential regulatory role during oogenesis and fertilization. We have also shown that the CPI2a inhibitor and both Ce-CPL-1 and Ce-CPZ-1 enzymes are present in the myoepithelial sheath surrounding germ cells, oocytes, and embryos as well as in the yolk granules within normal oocytes. Staining of mutant worms with anti-yolk protein antibodies has indicted that the proteins are not present in the mature oocytes...
September 22, 2006: Journal of Biological Chemistry
https://read.qxmd.com/read/12040011/ovulatory-surges-of-human-cg-prevent-hormone-induced-granulosa-cell-tumor-formation-leading-to-the-identification-of-tumor-associated-changes-in-the-transcriptome
#3
Gabe E Owens, Ruth A Keri, John H Nilson
Granulosa cell tumors comprise approximately 10% of ovarian tumors and, although rare, are clinically important due to their potential for malignancy and recurrence. Although their morphological features have been carefully described, the global changes in gene expression associated with their formation remain undetermined. To initiate this characterization, we used a transgenic mouse model in which granulosa cell tumors occur with 100% penetrance in CF-1 mice that harbor a novel transgene encoding a chimeric LHbeta subunit...
June 2002: Molecular Endocrinology
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