Abstract Study question What is the underlying mechanism contributing to transgenerational defects of oocytes and embryos polycystic ovary syndrome (PCOS)? Summary answer The inheritance abnormal chromatin accessibility in PCOS responsible for defect transgeneration. known already Studies have provided evidence compromised oocyte quality related adverse impacts. Observed animal-model include me...

The present study was made to investigate the role of high doses aspartame used as sweeteners instant beverages (Tropicana Slim) for inducing gross malformations and histopathological lesions in liver white mice their embryos, furthermore embryos these mice. For this purpose (25) pregnant were which divided into five equal groups (one control four experimental groups). Aspartame given single da...

Background: NK cells act as one of the most important immunosurveillance mechanisms eliminating cancer cells. recognize Fc portions antibodies binding to surface antigens and release cytotoxic granules cytokines. Antibody-dependent cell-mediated cytotoxicity (ADCC) is major NK-dependent killing mechanisms, activated for example by therapeutic monoclonal antibodies, such anti-CD20 antibody ritux...

in order to do in vitro fertilization (ivf), 435 oocytes were collected from 20 super ovulated nmri female mice, in m2 media with 4% bsa. 85% (n=370) of collected oocytes were in mii phase. epididymal sperms were added to 332 oocytes in t6 media drops with 4% bsa and incubated. fertilization rate was 79.8% (n=265) out of which 27.5% (n=73) grew to morula and 20.8% (n=55) achieved blastocyst sta...

one of the mechanisms involved in the regulation of the immune system by steroid hormones could be the monocytic-macrophage system. in this study the effect of the male hormone 5a-dht on cytokine release by peritoneal macrophages (mφ) of male and female nzb/balbc mice was investigated. macrophages from male mice activated with lps produced a greater amount of il-1β (21.8%) (p<0.05) and il-6 (19...

Background: Nitric oxide (NO) is an important molecular regulator in biology of reproductive systems. In addition, critical level of NO is essential for Implantation and embryo’s development. However, increased levels of NO can have a wide range of adverse effects. This molecule is synthesized from L-Arginine (L.A) by Nitric oxide Synthetase (NOS) activity. In the current study, the effects of ...

Polycomb-group proteins assemble into two primary complexes—Polycomb repressive complex (PRC) 1 and 2—that safeguard cell fate by repressing gene transcription. Two new studies explore the PRC1 landscape during transition from gametes to embryos in mice, thus providing insight intergenerational transmission of epigenetic information regulation dynamics as prepare for gastrulation.

Buruli Ulcer is a neglected tropical disease leading to extensive disabilities and morbidity in West Africa. In this paper we sought to characterize various strains of Mycobacterium ulcerans (M.ulcerans) with different origins and laboratory passage records while refining a mouse model for Buruli ulcer. We described, compared and followed the kinetics of the histo-pathological outcome of infect...