The main purpose of imaging evaluation in male infertility is to identify and treat correctable causes of infertility, such as obstruction of the seminal tract. Various imaging modalities are available to evaluate men with obstructive infertility including scrotal ultrasonography, transrectal ultrasound (TRUS), vasography, magnetic resonance imaging, seminal vesicle aspiration, seminal tract wa...

Meiotic silencing of sex chromosomes may cause their depletion of meiosis-specific genes during evolution. Here, we challenge this hypothesis by reporting the identification of TEX11 as the first X-encoded meiosis-specific factor in mice. TEX11 forms discrete foci on synapsed regions of meiotic chromosomes and appears to be a novel constituent of meiotic nodules involved in recombination. Loss ...

Seminal plasma from ejaculates of 10 healthy, fertile volunteers and 63 infertile males was analysed for superoxide dismutase (SOD) and xanthine oxidase (XO) activities using a chemiluminometer. There was not statistically significant difference in the activity of either enzyme between control and infertile populations (113 +/- 74 IU/ml for SOD and 1.17 +/- 0.52 IU/ml for XO) in samples from no...

OBJECTIVE To investigate the influence of consanguineous marriage on male factor infertility in Lebanon, where rates of consanguineous marriage remain high (29.6% among Muslims, 16.5% among Christians). DESIGN Clinic-based, case-control study, using reproductive history, risk factor interview, and laboratory-based semen analysis. SETTING Two IVF clinics in Beirut, Lebanon, during an 8-month...

Exposure to stressors facilitates the formation of social preferences in monogamous male prairie voles (Microtus ochrogaster). In the present study, the hypothesis was tested that treatment with corticotropin-releasing factor (CRF), a neuropeptide released during stress, is capable of inducing social preferences in male prairie voles. The effects of five doses of CRF (0.01, 0.1, 1.0, 10 and 100...

Transcription factors govern diverse aspects of cell growth and differentiation as major switches of gene expression. Etv5, a member of the E26 transformation-specific family of transcription factors, has many stories to share when it comes to reproduction. Etv5 deficient mice show complex infertility phenotypes both in males and females. In males, the infertility phenotype exhibited by Etv5 de...

Objective – To study the incidence of male factor infertility and type of semen abnormality in the farmer couple attending our infertility outpatient clinic. MethodDatabase of 3100 patients with male factor infertility were retrospectively reviewed. Patients were divided in two groups for analysis: group 1 – farmer , group 2 – non farmer. Records of semen analysis and serum FSH (Follicle stimul...