نتایج جستجو برای: Ovarian Follicle

تعداد نتایج: 92608  

Journal: :anatomical sciences journal 0
mohammad nabiuni roya ganji mohammadhadi bahadori

introduction: melatonin acts as an indirect antioxidant and is a powerful direct free radical scavenger and direct responses to melatonin in the gonads are detected. this study aims to investigate the influence of different doses of melatonin on preantral follicle development and oogenesis of in vitro cultured mouse ovarian follicles. materials and methods: preantral follicles with diameters of...

Journal: :international journal of reproductive biomedicine 0
soghra bahmanpour tahereh talaei khozani nehleh zarei fard mansoureh jaberipour ahmah hosseini tahereh esmaeilpour

background: the interaction between follicular cells and oocyte leads to a change in gene expression involved in oocyte maturation processes. objective: the purpose of this study was to quantify the expression of more common genes involved in follicular growth and oocyte developmental competence. materials and methods: in this experimental study, the expression of genes was evaluated with qrt-p...

Journal: :international journal of reproductive biomedicine 0
ensieh shahrokh tehraninezhad fatemeh mehrabi raheleh taati vahid kalantar elham aziminekoo azam tarafdari

background: the predictive roles of follicle stimulating hormone (fsh), anti-mullerian hormone (amh) and antral follicle count (afc) as ovarian reserve markers in women with different age groups are not established well. objective: this study compares the value of fsh, amh and afc at the time of     in vitro fertilization (ivf) treatment in different age groups. materials and methods: in this c...

Journal: :international journal of reproductive biomedicine 0
fereshteh safian mohammad ali khalili mojgan karimi-zarchi mehdi mohsenzadeh sareh ashourzadeh marjan omidi

background: in vitro maturation (ivm) of immature oocytes collected from ovary has been proposed for fertility preservation. in addition, quality of oocytes post ivm is one of the factors determining its developmental competence. by using the non-invasive polscope system, both meiotic spindle (ms) and zona pellucida (zp) can be assessed in living oocytes. objective: the aim was to investigate t...

Journal: :anatomical sciences journal 0
mahmoud moghaddam-dorafshani medi jalali mohammad reza nikravesh ali reza ebrahimzadeh

introduction: among the endocrine diseases, hypothyroidism is the commonest after diabetes.thyroid hormones (t3,t4) are essential for genital organs function. apoptosis process in ovarian cells plays a significant role of development in ovarian follicles. the aim of the present study was determine the apoptotic index induced by hypothyroidism in rat ovarian follicles. materials and methods: in ...

Journal: :international journal of reproductive biomedicine 0
wang dan gao jing xia liangbin zhang ting zeng ying

background: poor ovarian response phenomenon has been observed in some of the in vitro fertilization-embryo transfer patients. some investigations found that follicle stimulating hormone receptor (fshr) gene plays a role in the process, but no direct evidence shows the correlation between genotypes of fshr and ovarian response. objective: exploring the molecular mechanism behind the mutation of...

Journal: :Human reproduction update 2005
Michael K Skinner

The assembly of the primordial follicles early in ovarian development and the subsequent development and transition of the primordial follicle to the primary follicle are critical processes in ovarian biology. These processes directly affect the number of oocytes available to a female throughout her reproductive life. Once the pool of primordial follicles is depleted a series of physiological c...

Journal: :Journal of cell science 2016
Lizhao Feng Yijing Wang Han Cai Guanghong Sun Wanbao Niu Qiliang Xin Xiaofang Tang Jiawei Zhang Chao Wang Hua Zhang Guoliang Xia

Ovarian follicles are the basic functional units of female reproduction in the mammalian ovary. We show here that the protein a disintegrin and metalloproteinase domain 10 (ADAM10), a cell surface sheddase, plays an indispensable role in controlling primordial follicle formation by regulating the recruitment of follicle supporting cells in mice. We demonstrate that suppressing ADAM10 in vitro o...

2010
Yuichi Niikura Teruko Niikura Ning Wang Chonthicha Satirapod Jonathan L. Tilly

Through the use of parabiosis in mice, aging-related deterioration of skeletal muscle and liver has been linked to a loss of systemic factors that support adult stem or progenitor cell activity. Since aging-related ovarian failure has recently been attributed, at least in part, to a loss of de-novo oocyte-containing follicle formation associated with declining oogonial stem cell activity, herei...

Journal: :Endocrinology 2001
A L Durlinger M J Gruijters P Kramer B Karels T R Kumar M M Matzuk U M Rose F H de Jong J T Uilenbroek J A Grootegoed A P Themmen

Although ovarian follicle growth is under the influence of many growth factors and hormones of which FSH remains one of the most prominent regulators. Therefore, factors affecting the sensitivity of ovarian follicles to FSH are also important for follicle growth. The aim of the present study was to investigate whether anti-Müllerian hormone (AMH) has an inhibitory effect on follicle growth by d...

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