Vitamin D insufficiency as a risk factor for reproductive losses in miscarriage.

Objective: To study the relationship between vitamin D deficiency, VDR gene polymorphism rs10735810 (A > G), and a missed abortion in the first trimester of gestation; to determine the predictors of its risk.

Research Methods: 178 women aged between 18 and 41 were surveyed. The main group consisted of patients with miscarriage ( = 101), verified at the hospital stage (O02.

Endometrial asynchrony in pathogenesis of implantation impairment in women with infertility associated with endometriosis.

There is a statistically significant difference in the frequency of implantation in the group of patients with endometriosis associated with infertility compared with the control group. This has been confirmed by a number of different studies. The aim of the study to expand the understanding of the pathogenesis of implantation failures in patients with infertility associated with endometriosis The present study included 83 women aged 29 to 43 years (the average age was 33 ± 3.

Prolonged cyclical and continuous regimens of dydrogesterone are effective for reducing chronic pelvic pain in women with endometriosis: results of the ORCHIDEA study.

Objective: To compare the effectiveness of two different treatment regimens of dydrogesterone in the management of endometriosis-related chronic pelvic pain.

Design: Observational, prospective cohort study over six months.

Setting: Twenty gynecology clinics in the Russian Federation.

Direct Integration of Strained-Pt Catalysts into Proton-Exchange-Membrane Fuel Cells with Atomic Layer Deposition.

The design and fabrication of lattice-strained platinum catalysts achieved by removing a soluble core from a platinum shell synthesized via atomic layer deposition, is reported. The remarkable catalytic performance for the oxygen reduction reaction (ORR), measured in both half-cell and full-cell configurations, is attributed to the observed lattice strain. By further optimizing the nanoparticle geometry and ionomer/carbon interactions, mass activity close to 0.

Current Knowledge on Endometriosis Etiology: A Systematic Review of Literature.

Objective: To review the mechanisms of endometriosis development, including those related to epigenetic mutations, cellular dysregulation, inflammatory processes, and oxidative stress.

Methods: A systematic literature review regarding current aspects of endometriosis etiology, genesis and development was performed using the PubMed, Google Scholar, and eLibrary databases. Keywords included endometriosis, etiology, development, genesis, associations and mechanisms.