The interovarian relationship of the number of corpora lutea with ovarian fluid weight, with number of follicles, with number of normal follicles and with number of milky follicles was studied at three different phases of the estrous cycle in sows. There was a significant association (exceeding that which would arise because of the inequality of function between the two ovaries) between-ovaries...

Apoptosis is the underlying mechanism of follicular atresia in the mammalian ovary. However, the apoptotic pathways governing this ovarian process are not completely elucidated. In the present study, expression of Fas and Fas ligand, the proximal members of the death receptor pathway, was evaluated in mouse ovarian follicles using immunofluorescence and in situ hybridization. Normal or atretic ...

The effects of salmon calcitonin (sCT) on the secretion of 17beta-estradiol (E(2)) were examined in female common carp, Cyprinus carpio. Vitellogenic stage fish adapted to high-Ca water were i.p. injected with vehicle, sCT, human chorionic gonadotropin (hCG), or hCG plus sCT. To determine whether ovarian follicles are equipped with CT receptors, a CT binding assay was conducted. In the in vitro...

objective: in vitro ovarian follicle culture provides a tool to investigate folliculogenesis and may be used as an assisted reproductive technology )art(. this study aims to compare survival and development rates in mouse ovarian follicles after two and three dimensional in vitro cultures. methods: preantral follicles were isolated from the ovaries of 14-day old female mice and cultured in α-m...

BACKGROUND Computer-assisted analyses were used to examine ultrasound image attributes of human dominant ovarian follicles that developed during natural and oral contraceptive (OC) cycles. We hypothesized that image attributes of natural cycle follicles would quantitatively differ from those in OC cycles and that OC cycle follicles would possess image attributes indicative of atresia. METHODS...

The first aim of the research conducted as part of this thesis was to investigate the expression and activities of 11PHSD enzymes in porcine mural granulosa cells and COCs from small, medium and large antral follicles, as well as from ovarian cysts. Both cloned lipHSD enzymes (11 PHSD 1 and 11PHSD2) were expressed in porcine granulosa cells however the results of the expression studies in COCs ...

This study compared the predictive value of the LIVE/DEAD fluorescence viability assay to xenotransplantation in SCID mice, regarding the developmental potential of cryopreseved human ovarian tissue for fertility preservation purposes. The thawed ovarian tissue of ten patients was partly examined by LIVE/DEAD viability staining or histologically examined after transplantation and gonadotropin s...

Chemical protection/Ovarian follicle/Gamma irradiation Adult virgin female Swiss albino mice were irradiated with 2.5, 5 and 10 Gy of gamma radiation in the presence and absence of the drug MPG and changes in the ovarian follicular population were scored at various post irradiation intervals of 3 hours to 14 days. The results indicate that the drug has partially prevented the rapid reduction in...

Parabens are widely used preservatives in basic necessities such as cosmetic and pharmaceutical products. In previous studies, xenoestrogenic actions of parabens were reported in an immature rat model and a rat pituitary cell line (GH3 cells). The relationship between parabens and ovarian failure has not been described. In the present study, the influence of parabens on ovarian folliculogenesis...