Measurement of oxytocin concentrations in plasma and ovarian extracts during the oestrous cycle of mares.

Ovarian function in ewes after treatment with mifepristone early during the oestrous cycle.

The aim of this study was to determine whether endogenous progesterone regulates synthesis and secretion of luteal oxytocin. In Expt 1, mature ewes (n = 5 per group) were assigned randomly to control or mifepristone (RU486) treatment groups. Ewes were injected s.c. twice a day with vehicle or 10 mg RU486 on days 5-7 of the oestrous cycle (oestrus = day 0). On day 8, after an i.v. injection with...

P-80: Histological Assessment and Oestrous Cycle Restoration after Vit-rified-Warmed Rat Ovarian Tissue Autotransplantation, Using Hyaluronic AcidHydrogel Scaffold

Background: Follicular pool is reduced after transplantation of vitrified ovary. Therefore, methods should be improved to accelerate ovarian function revival and maintain follicular reserve. In this study hyaluronic acid hydrogel as a scaffold was used to improve restoration of ovarian oestrous cycle. Materials and Methods: 79 mature (~8 weeks) rats having normal estrous cycles were divided int...

Hormonal Profile of Ovarian Follicular Fluid and Blood Plasma during Different Stages of Estrous Cycle in Holstein Cattle

The aim of this study was to evaluate the concentrations of reproductive hormones in blood plasma and in follicular fluids of different sized follicles during various stages of the estrous cycle in Holstein cattle. Jugular blood samples from 42 adult Holstein cattle were collected immediately after the slaughter. Antral fluids from small (4-5 mm), medium (6-9 mm) and large (10-20 mm) follicles ...

Plasma Estradiol-17b and Progesterone during Estrous Cycle in Caspian Mares

P-153: Hyaluronic Acid Hydrogel Scaffold Containing VEGF and bFGF Affect Oestrous Cycle Restoration after Rat OvarianTissue Autotransplantation

Background: The functional longevity of ovarian transplant at present is one of the most challenging questions regarding ovary transplantation. So, we used hyaluronic acid (HA) hydrogel scaffold with combination of VEGF and bFGF for restoration of cyclical ovarian function after ovarian tissue transplantation in a rat model. Materials and Methods: A total of 25 Wistar female rats weighing betwe...