Background: Leptin, the product of the obesity (ob) gene, acts as a signaling adipokine for modulating food intake, energy metabolism and reproductive functions in mammals. Leptin’s effects on the reproductive system at various levels of the hypothalamic-pituitary-gonadal axis have been established. Moreover, the direct and local effect of leptin on bovine oocyte maturation and corpus luteum fu...

ovary and ovarian bursa of twelve female reproductive organ, six samples from each immature and mature buffaloes were collected from slaughterhouse. all samples were transferred to anatomy department of veterinary college, and they studied morphologically and morphometrically, length, wide, and thickness of ovaries, deep and wide of opening of ovarian bursa were measured. additionally, dimensio...

Corpus luteum and the process of its formation in fur seal ovary, collected around the Robben Island in the Okhotsk Sea, were studied. The regressive phases of follicle and courpus luteum were examined histologically. There are two kinds of corpus luteum, one is formed inside the vesicular follicle after ovulation, the other is formed outside the follicle without ovulation. The former is the tr...

introduction idiopathic thrombocytopenic purpura is a platelet autoimmune hemostatic disorder. in this study, an itp case with abdominal signs and hemorrhagic corpus luteum is presented. case presentation the patient is a 28-year-old nonpregnant woman admitted to ed for constant acute abdominal pain, accompanied by nausea and vomiting. itp was the prominent disease in her medical history which ...

Background: Many hormones are involved in the regulation of reproduction. Leptin hormone which is mainly secreted by adipose tissue plays an important role in energy homeostasis and reproduction. It seems that leptin is an important linkage between body metabolism and reproductive system. Moreover, it has been shown that leptin and leptin receptor express in reproductive organs of some species....

The corpus luteum is a dynamic tissue whose cellular composition is traced to the remnants of the ovarian follicle, neovascularization and infiltration of immune cells. The corpus luteum undergoes dramatic morphological and functional changes throughout its lifespan. Functionally the corpus luteum is responsible for the provision of progesterone in support of pregnancy. Depending on the species...

Introduction Figure 1 summarizes some key aspects of the bovine estrous cycle. Changes in the 2 key structures on the ovary, the preovulatory follicle and the corpus luteum, are emphasized in this figure. The function of 4 important hormones is also summarized in this figure. Estradiol-17ß from the preovulatory follicle causes the cow to manifest estrus behaviour and have an LH surge. The LH su...

background: to achieve multiple oocytes for in vitro fertilization, ovulation induction is induced by gonadotropins however, it has several effects on oocytes and embryo quality and endometrium receptivity. the aim of this study was to assess ultrastructural changes of corpus luteum after ovarian induction using human menopausal gonadotropin (hmg) and human chorionic gonadotropin (hcg) during l...

background: congenital toxoplasmosis is one cause of abortion. infection can disrupt ovarian cycles and because toxoplasmosis is an infectious disease may have a similar effect on the ovaries. the purpose of this study was to investigate the pathological changes in the ovaries due to toxoplasmosis.   methods: tachyzoites of toxoplasma gondii were harvested from peritoneal fluid of mice, experim...