Introduction: Ruta graveolens (RG) stimulates muscles of the uterus, which in turn may initiate menstrual cycles. RG decreases fertility and may also block the implantation of a fertilized egg. This work was undertaken to examine the possible effect of aqueous extract of RG on the reproductive system of immature female mice. Methods: For this reason, immature female Balb/C mouse aged 4-5 wee...

The aim of this research was to examine the effects forskolin and PGE2 on steroid synthesis in goat luteal cells cultured at early late corpus luteum. Therefore, removed from both stage luteum were with newborn calf serum for first 18 h. Then, media changed different concentrations (10, 100ng/ml) or added fresh another 96 culture replaced every 48 h retrieved kept frozen -20 °C until hormone an...

The distribution of arbitrarily-classed large (~>4 mm dia.) and small (<4 mm dia.) follicles between the ovary with the lesser number of corpora lutea and the ovary with the greater number of corpora lutea was studied in pregnant cows, sows and ewes. At mid-pregnancy in the cow, numbers of large follicles reached a low level and remained at that level to the end of pregnancy on the ovary that c...

background: the most common metal used in the body is iron and since it may produce ros, it could potentially be a dangerous substance. objectives: regarding the side effects of nanomaterials such as nano iron particles and possibility of environmental contamination including air pollution with nanoscale iron particle, this study was designed to compare the effects of conventional iron oxide wi...

background:   objective: this study was designed to evaluate effects of lithium chloride on the release of steroid hormones and steroidogenic enzymes in gonadotropin-stimulated rats.   materials and methods: immature 23 days old wistar rats were divided into 10 groups; each group comprised of 8 rats, and induced with single injection of pregnant mare’s serum gonadotrophin (pmsg) and followed by...

The first report of the combined use of pituitary suppression and ovarian hyperstimulation in invitro fertilization (IVF) and embryo transfer programmes was published in 1984 (1). Since then, the advantages of gonadotrophin hormonereleasing hormone analogues (GnRHa) have been well documented; the cancellation rate has been decreased through the prevention of premature luteinizing hormone (LH) s...

The aim of the present study was to determine follicle development and resumption of ovarian activity in Bulgarian Murrah buffaloes by transrectal ultrasonographic monitoring of the ovaries during the first 50 days after after calving throughout the breeding season. The investigation included 18 clinically healthy Bulgarian Murrah buffaloes divided into two groups: Group I (n=8, primiparous buf...