In assisted reproductive technology, medications and ovarian stimulation play a crucial role. The availability of gonadotrophins and GnRH analogues has allowed the tailoring of several stimulation schemes. The two most commonly used gonadotrophin forms are urinary hMG and recombinant FSH in combination with GnRH agonists or GnRH antagonists. Cycles stimulate with recombinant FSH appear to have ...

The aim of in vitro maturation oocyte systems is to produce oocytes of comparable quality to those derived in vivo. The present study was designed to examine the surface morphological changes of the cumulus-oocyte complex (COC) and nuclear maturation in a culture system containing pyruvate. Ovaries were obtained from a slaughterhouse and transported to the laboratory within 2 h at 35-39 degrees...

The effect of supplementation of follicular fluid (FF) at 5.0% concentration in in vitro maturation (IVM) media on in vitro production of buffalo embryos was studied. Oocytes were aspirated from slaughter house derived ovaries and graded. Cultutarable quality oocytes were randomly cultured in IVM media with FF (n = 334) and without FF (n = 228) and subjected to maturation. The maturation rate, ...

Juvenile hormone (JH) is a central hormonal regulator of previtellogenic development in female Aedes aegypti mosquitoes. JH levels are low at eclosion and increase during the first day after adult emergence. This initial rise in JH is essential for female reproductive maturation. After previtellogenic maturation is complete, the mosquito enters a 'state-of-arrest' during which JH synthesis cont...

BACKGROUND Fat-rich diet may alter oocyte development and maturation and embryonic development by inducing oxidative stress (OS) in follicular environment. OBJECTIVE To investigate the relationship between fat intake and oxidative stress with oocyte competence and embryo quality. MATERIALS AND METHODS In observational study follicular fluid was collected from 236 women undergoing assisted r...

background: fine needle aspiration (fna) has led to a decrease in unnecessary surgeries for thyroid nodules. this study was designed to compare diagnostic value of fna and frozen section methods in the follicular lesions. methods: this is a cross-sectional study based on the medical records of 42 patients who were referred to surgery clinic of rasool-e-akram hospital in tehran with complaint of...

Regression models were developed for prediction of days to first postpartum ovulation in Holstein cows milked twice daily. Variables subjected to least squares multiple regression analysis included experimental data collected during weeks 1 and 2 postpartum from 20 cows that ovulated first between 15 and 34 days postpartum. Changes in serum estradiol (AE), number of ovarian follicles ;~ 10 mm d...