Impact of post-Chernobyl radiation on flow cytometry parameters of human sperm.

Objective: The aim of this study was to analyse the long-term radiation effects on human sperm.

Methods: In total, 104 samples of male donors from 2 regions of Ukraine were tested. Group 1 consisted of 32 donors from the Ivano-Frankivsk region, group 2 included 72 volunteers from the Zhytomyr region.

Pregnancy outcome prediction after embryo transfer based on serum human chorionic gonadotrophin concentrations.

Objective: The aim of the study was to evaluate the predictive value of the human chorionic gonadotropin (hCG) concentration on the 14th and 16th post-ovulation day after embryo transfer/cryoembryo transfer as well as the dynamics of its increase with respect to the outcome of pregnancy.

Materials And Methods: In total, 130 embryo transfers and cryoembryo transfers in women aged 22 to 38 years who experienced a single embryo transfer or single cryoembryo transfer with confirmed pregnancy (hCG level over 15 IU/l on 14th post-ovulation day - D14) were selected. The input parameters (hCG D14, hCG D16, hCG D16-D14, hCG D16/D14 and positivity of at least 2.

Impact of environmental factors on male reproductive health.

Objective: The aim of our work was to make analysis of world literature that develops a problem of impact of environment on male reproductive health.

Patients And Methods: Materials and methods: We analyzed the bibliography available, until January 2020, about influence of different exogenic factors on male reproductive system.

Conclusion: Conclusions: The biggest influence of ionizing radiation on mankind was reached after two big catastrophes: Chernobyl Nuclear Power Plant in April 1986 and an accident on the Fukushima Daiichi Nuclear Power Plant in March 2011.