نتایج جستجو برای: preantral follicle

تعداد نتایج: 21081  

Journal: :Theriogenology 2004
Carolina M Lucci Mirella A Kacinskis Rodolfo Rumpf Sônia N Báo

The maintenance of follicle quality during the transportation of ovaries is essential for the successful cryopreservation and in vitro development of preantral follicles. The objective of this study was to evaluate the effect of cooling ovarian tissue on the conservation of zebu cow preantral follicles. Ovarian pieces were immersed in saline or coconut water (CW) solutions and maintained at 4 o...

2016
Elsaid N

AMH is synthesized specifically by granulose cells of developing ovarian preantral and small antral follicles. Circulating AMH levels in women with PCOS are 2to 3-fold more compared to ovulatory women with normal ovaries [6,7], which denotes to the 2to 3-fold rise in the count of small follicles detected in PCOS. The excessive AMH has been hypothesized to decrease follicle sensitivity to FSH in...

Journal: :Folia histochemica et cytobiologica 2009
Amina Boubekri Thérese Gernigon-Spychalowicz Farida Khammar Jean-Marie Exbrayat

The sand rat (Psammomys obesus) constitutes a model to study seasonal changes and several metabolic disorders. In order to perform breeding laboratory conditions, the reproductive function of this species living in North Occidental Algerian Sahara was studied. The aim of this work was to investigate the follicular growth changes and the steroidogenic associated aspects. The study was performed ...

Journal: :modares journal of medical sciences: pathobiology 2013
shabnam abdi mojdeh salehnia saman hosseinkhani

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...

Journal: :BMC Biotechnology 2008
Ta-Chin Lin Jui-Mei Yen Tsung-Cheng Kuo Kun-Bing Gong Kung-Hao Hsu Teng-Tsao Hsu

BACKGROUND Cryopreservation of preantral follicles or ovarian tissues would enable the storage of large numbers of primordial follicles or preantral follicles and preserves the structural integrity of somatic and reproductive cells. In the present study, we compared the developmental potential of cryopreserved two-week-old mouse preantral follicles, ovarian tissue slices, two-week-old mouse ova...

Abedpour N Javadi A Khaleghi Kh Rajaee F

Background: To determine the effect of ovarian stimulation on the height of the epithelial cells of fallopian tubes and development of ovarian follicles and corpus luteum in NMRI mice. Materials and Methods: Forty female NMRI mice of 6 to 8 weeks were selected and divided into 4 groups: control group, 10 mice that were injected with saline. The second group of 10 mice that were injected with 7 ...

Journal: :Annales d'endocrinologie 2010
A Gougeon

By integrating morphometrical and endocrinological data, as well as biological effects of various molecules synthesized by the human follicle, we propose a dynamic view of the follicle growth within the human ovary. Folliculogenesis starts with entry of resting follicles into the growth phase, a process where the kit system plays a key role. Several months are required for a new growing follicl...

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