Cyto- and Histopographic Assessment of CPA3-Positive Testicular Mast Cells in Obstructive and Non-Obstructive Azoospermia.

Infertility is an important personal and society disease, of which the male factor represents half of all causes. One of the aspects less studied in male infertility is the immunological testicular microenvironment. Mast cells (MCs), having high potential for regulating spermatogenesis due to fine-tuning the state of the integrative buffer metabolic environment, are one of the most crucial cellular subpopulations of the testicular interstitium.

[Molecular basis of biological activity of polysaccharides in COVID-19 associated conditions].

The review considers the main molecular biological features of the COVID-19 causative agent, the SARS-CoV-2 virus: life cycle, viral cell penetration strategies, interactions of viral proteins with human proteins, cytopathic effects. We also analyze pathological conditions that occur both during the course of the COVID-19 disease and after virus elimination. A brief review of the biological activities of polysaccharides isolated from various sources is given, and possible molecular biological mechanisms of these activities are considered.

[Association of glutathione S-transferase gene polymorphism with risk of male infertility in Moscow region].

Unlabelled: About 30% of male infertility is associated with genetic abnormalities. Genetic polymorphisms increase the level of individual susceptibility to adverse environmental factors and affect human reproductive function.

Aim: To study associations of glutathione S-transferase GSTP1(Ile/Val) gene polymorphisms (A313G; rs1695) with the risk of pathospermia in men of the Moscow region.

[Association of tension-free inguinal hernia repair and pathospermia in fertile men].

Objective: To reveal the association of tension-free inguinal hernia repair and pathospermia in fertile men.

Material And Methods: We have retrospectively analyzed medical records of 512 men who appealed to andrologist with complaints of the absence of pregnancy in wife in 2018. We evaluated duration and features of infertility, presence/absence of previous inguinal hernia repair, spermogram data (according to WHO criteria, 2010) in all patients.

[The effect of polymorphisms C677T and 1298 gene MTHFR on the reproductive function of men].

Unlabelled: References. Disturbances of spermogram parameters are associated with infertility in men and are determined by polymorphisms of many genes involved in spermatogenesis. Folate metabolism plays an important role in spermatogenesis, as it is involved in the synthesis, repair and methylation of DNA.