background: it is estimated that about 50% of causes of recurrent pregnancy loss (rpl) cases remain unknown. sperm factors are suggested to have probable role in cases with rpl. objective: the goal was to determine the possible relationship between semen bacterial contaminations with unexplained rpl. also, the correlation between number of bacterial colony and sperm chromatin condensation was e...

Background -Recurrent pregnancy loss defined as two or more miscarriage before 20 weeks of pregnancy affecting 1-5 % or women in reproductive age .There are many etiologies have been suggested, like Genetic, Immunologic, Thrombophila, Endocrine and Anatomic; but in 50% of cases, the exact etiology remains uncertain. Endometrium acts as biosensor of embryo quality and endometrium itself contribu...

Increased genetic selection over the past 40 years has resulted in a dairy cow with an improved biological efficiency for producing milk but with an associated reduced fertility. Embryo loss is the greatest factor contributing to the failure of a cow to conceive. The extent and timing of embryo loss indicates that 70% to 80% of this loss occurs in the first 2 weeks after artificial insemination...

background: improvement of assisted reproductive technique (art) results in higher pregnancy rates from positive beta hcg to take home baby statistics. despite developments in culture media allowing blastocyst stage transfer, some centers apply second, third and sometimes fourth day post injection for embryo transfer. this study aimed to compare their reproductive outcomes.   methods : this pro...

  Background: Improvement of assisted reproductive technique (ART) results in higher pregnancy rates from positive Beta HCG to take home baby statistics. Despite developments in culture media allowing blastocyst stage transfer, some centers apply second, third and sometimes fourth day post injection for embryo transfer. This study aimed to compare their reproductive outcomes.   Methods : This p...

ObjectiveTo use time-lapse imaging to compare embryo morphokinetic parameters between embryos resulting in euploid pregnancy loss and live birth.DesignRetrospective cohort study.SettingSingle academic fertility center.Patient(s)All single transfers October 2015 January 2018.Intervention(s)Collection analysis of baseline characteristics, cycle parameters, outcomes.Main Outcome Measure(s)Embryo m...

Background: Recurrent pregnancy loss (RPL) is a common and distressing disorder. RPL is a devastating reproductive problem affecting approximately 5% of couples trying to conceive. If we camper the rate of miscarriage in couples may experience RPL with the pregnancy loss rate in general population we may calculate that it is at least two or three times higher than expected. This study aimed to ...

Objective. To compare the difference of imprinting status of insulin-like growth factor II (IGF-II) gene in villus between normal embryo development group and abnormal embryo development group and to investigate the relationship between karyotype and the imprinting status of IGF-II gene. Methods. A total of 85 pregnant women with singleton pregnancy were divided into two groups: one with abnorm...

The plant life cycle alternates between two genetically active generations: the diploid sporophyte and the haploid gametophyte. In angiosperms the gametophytes are sexually dimorphic and consist of only a few cells. The female gametophyte, or embryo sac, is comprised of four cell types: two synergids, an egg cell, a central cell, and a variable number of antipodal cells. In some species the ant...