نتایج جستجو برای: cumulus cells (cc)

تعداد نتایج: 1413281  

Journal: :iranian biomedical journal 0
هنگامه عموپور hengameh amoopour محمدعلی خلیلی mohammad ali khalili محمدجواد محیطی mohammad javad mohiti مهرداد سلیمانی mehrdad solaimani

the main role of cumulus cells (cc) is to provide nutritious materials for developing oocytes. follicular fluid (ff) contains the enzyme acid phosphatase, which plays a role in ovulation and fertilization of oocyte. the objective of this prospective study was to evaluate the levels of acid phosphatase in ff and the rate of apoptosis in cc of fertilized and unfertilized oocytes in intracytoplasm...

Journal: :iranian journal of veterinary research 2008
n hajializadeh h babaei s.n nematollahi-mahani s azizollahi

this study was designed to examine the effects of retinoic acid adding to cumulus and/or fibroblast cellsmonolayer on the development of mouse early embryos. one-cell mouse embryos were obtained from nmrimice after superovulation by an intraperitoneal injection of 5 iu equine chorionic gonadotrophin (ecg)followed 48 hrs later by 5 iu human chorionic gonadotrophin (hcg). mouse embryonic fibrobla...

Energy balance is regulated by ghrelin that is a neuroendocrine modulator. Ghrelin is expressed in reproductive organs. However, the role of ghrelin during in vitro maturation and bovine preimplantational development is limited. The purpose of this study was to determine the expression of ghrelin (GHRL) and its receptor growth hormone secretagogue receptor 1A (GHS-R1A) mRNA expression, and cumu...

H Babaei, N Hajializadeh S Azizollahi S.N Nematollahi-Mahani

This study was designed to examine the effects of retinoic acid adding to cumulus and/or fibroblast cellsmonolayer on the development of mouse early embryos. One-cell mouse embryos were obtained from NMRImice after superovulation by an intraperitoneal injection of 5 IU equine chorionic gonadotrophin (eCG)followed 48 hrs later by 5 IU human chorionic gonadotrophin (hCG). Mouse embryonic fibrobla...

Journal: :American journal of physiology. Endocrinology and metabolism 2011
Young S Lee Catherine A VandeVoort John P Gaughan Uros Midic Zoran Obradovic Keith E Latham

The elaboration of a quality oocyte is integrally linked to the correct developmental progression of cumulus cell phenotype. In humans and nonhuman primates, oocyte quality is diminished with in vitro maturation. To determine the changes in gene expression in rhesus monkey cumulus cells (CC) that occur during the final day prior to oocyte maturation and how these changes differ between in vitro...

Hengameh Amoopour, Mehrdad Solaimani, Mohammad Ali Khalili, Mohammad Javad Mohiti,

The main role of cumulus cells (CC) is to provide nutritious materials for developing oocytes. Follicular fluid (FF) contains the enzyme acid phosphatase, which plays a role in ovulation and fertilization of oocyte. The objective of this prospective study was to evaluate the levels of acid phosphatase in FF and the rate of apoptosis in CC of fertilized and unfertilized oocytes in intracytoplasm...

Journal: :Human reproduction 2006
T Ebner M Moser M Sommergruber O Shebl G Tews

BACKGROUND Granulosa cells are essential mediators of oocyte maturation and fertilization. Because of the denudation of oocytes in preparation for ICSI, any potential positive effect of surplus cumulus cells (CCs) on further development would be unable to exert further effect. In order to evaluate the actual influence of adhering cumulus cells on further preimplantation development, this prospe...

Journal: :American journal of physiology. Endocrinology and metabolism 2013
Sylvain Auclair Rustem Uzbekov Sébastien Elis Laura Sanchez Igor Kireev Lionel Lardic Rozenn Dalbies-Tran Svetlana Uzbekova

Cumulus cells (CC) surround the oocyte and are coupled metabolically through regulation of nutrient intake. CC removal before in vitro maturation (IVM) decreases bovine oocyte developmental competence without affecting nuclear meiotic maturation. The objective was to investigate the influence of CC on oocyte cytoplasmic maturation in relation to energy metabolism. IVM with either cumulus-enclos...

Journal: :Reproduction in domestic animals = Zuchthygiene 2009
X Sun Z Li Y Yi W Ding J Chen J F Engelhardt G H Leno

In several mammalian species, the configuration of germinal vesicle (GV) chromatin correlates with the developmental competence of oocytes. Yet, no study has been published on the configuration of GV chromatin in ferret, nor is it known whether a specific configuration predicts meiotic competence in this species, in spite of the potential importance of ferret cloning to the study of human disea...

Journal: :Journal of animal science 2010
X Zhang Y Miao J-G Zhao L Spate M W Bennett C N Murphy H Schatten R S Prather

The physiological role of cumulus cells (CC) surrounding oocytes is particularly important for normal cytoplasmic maturation of oocytes. However, removal of CC from oocytes is inevitable for some embryo manipulation techniques, such as germinal vesicle (GV) transfer, somatic cell haploidization, and oocyte cryopreservation. The present study was designed to determine an optimal method to cultur...

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