Equine oocyte quality depending on original follicle population

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Seasonal influence on equine follicle dynamics

Recent innovations in ultrasonographic techniques have advanced our knowledge on the effects of seasonality on the changing populations of antral follicles in mares. The seasonal patterns in the monthly incidence of ovulations is at least partly a function of daylength, even at latitudes as low as 10o where the longest day may be less than 13 hours. Follicle dynamics involves a mid-anovulatory ...

متن کامل

Effects of lipoprotein, equine luteinizing hormone, equine follicle-stimulating hormone, and equine prolactin on equine testicular steroidogenesis in vitro.

A stallion testicular cell incubation system was developed and used to investigate the regulation of steroidogenesis in stallion testes. Cells isolated from testes of 2- to 4-year-old stallions (n = 6) were cultured for 12 hours in a defined medium with and without varying doses of lipoprotein, equine luteinizing hormone (eLH), human chorionic gonadotropin (hCG), equine follicle-stimulating hor...

متن کامل

Studies on the Human Oocyte and Its Follicle

Oocytes in primordial ("resting") follicles in adult human ovaries contain a complex paranuclear structure identified by light microscopists as Balbiani's vitelline body. By electron microscopy this structure is composed of a mass of mitochondria with associated endoplasmic reticulum, multiple compound aggregates which form a ring around the cytocentrum, and a single stack or coil of annulate l...

متن کامل

Improved oocyte quality is obtained with follicle stimulating hormone alone than with follicle stimulating hormone/human menopausal gonadotrophin combination.

The aim of this study was to compare the efficacy of pure follicle stimulating hormone (FSH) with that of FSH/human menopausal gonadotrophin (HMG) combination in downregulated cycles. A total of 357 patients was evaluated retrospectively. Sixty percent of patients in the FSH group and 55% in the FSH/HMG group were new; the others were repeat patients. Ovulation was suppressed with leuprolide ac...

متن کامل

The vanishing follicle in women aged over forty: premature, mechanical, LH-independent luteinization may reflect oocyte-follicle low quality?

Healthy ovulation in a natural cycle is triggered by a sharp rise in LH (LH surge). In ART cycle, hCG is used as an LH-surrogate. In order to prevent premature LH surge (and cycle cancellation), GnRH analogs (agonists or antagonists) are used. Indeed, LH surge is reliably prevented, setting the ground for precise ovulation timing with hCG. However, clinical experience indicates that premature l...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Pferdeheilkunde Equine Medicine

سال: 2010

ISSN: 0177-7726

DOI: 10.21836/pem20100111