Introduction: Contrary to a common belief, most mammalian females lose the ability of Germ Cell (GC) renewal and oogenesis during fetal life. Although, it has been claimed that germ line stem cells preserve oogenesis in postnatal mouse ovaries, that postnatal oogenesis keeps producing functional and sufficient GCs in the case of infertility (caused by different reasons) is doubtful. On the othe...

The morphology and physiology of the oogenesis have been well studied in vector Chagas disease Rhodnius prolixus. However, molecular interactions that regulate process egg formation, key for reproductive cycle vector, is still largely unknown. In order to understand cellular basis oogenesis, we examined function gene Bicaudal C (BicC) during early development R. We show prolixus BicC (Rp-BicC) ...

There has been a global decline in fertility rates, with ovulatory disorders emerging as the leading cause, contributing to lifetime infertility prevalence of 17.5%. Formation primordial follicle pool during early and further development oocytes after puberty is crucial determining female reproductive quality. However, increasing exposure environmental toxins (through occupational ubiquitous ch...

Introduction: In traditional medicine, pumpkin seeds are prescribed and used commonly as energetic and sexual enhancer substances. This study was planned and carried out in order to fill the gap caused by the lack of sufficient scientific evidence on the effect of this substance on oogenesis and hormone-pituitary-ovarian axis. Revealing the effect of hydro-alcoholic extract of pumpkin seeds on ...

Germline cell death in Drosophila oogenesis is controlled by distinct signals. The death of nurse cells in late oogenesis is developmentally regulated, whereas the death of egg chambers during mid-oogenesis is induced by environmental stress or developmental abnormalities. P-element insertions in the caspase gene dcp-1 disrupt both dcp-1 and the outlying gene, pita, leading to lethality and def...

HIGHLIGHTS The gametogenesis of Biomphalaria glabrata was described. Oogenesis classified into five developmental stages. New histomorphometric parameters were described for oocytes. Spermatogenesis seven stages development. B. as a tool environmental and public health researches.

Mammalian oogenesis requires oocyte-specific transcriptional regulators. The full complement of oocyte-specific transcription factors is unknown. Here, we describe the finding that Sohlh1, a spermatogenesis and oogenesis basic helix-loop-helix transcription factor in females, is preferentially expressed in oocytes and required for oogenesis. Sohlh1 disruption perturbs follicular formation in pa...

background: asparagus is a plant with high nutritional, pharmaceutical, and industrial values. objective: the present study aimed to evaluate the effect of aqueous extract of asparagus roots on the hypothalamic-pituitary-gonadal axis hormones and oogenesis in female rats. materials and methods: in this experimental study, 40 adult female wistar rats were divided into five groups, which consist ...