Internal doses in experimental mice and rats following exposure to neutron-activated MnO powder: results of an international, multicenter study.

The experiment was performed in support of a Japanese initiative to investigate the biological effects of irradiation from residual neutron-activated radioactivity that resulted from the A-bombing. Radionuclide Mn (T = 2.58 h) is one of the main neutron-activated emitters during the first hours after neutron activation of soil dust particles.

Low-Dose Radiation Exposure with MnO Powder Changes Gene Expressions in the Testes and the Prostate in Rats.

To investigate the biological effects of internal exposure of radioactive MnO powder, the major radioisotope dust in the soil after atomic bomb explosions, on male reproductive function, the gene expression of the testes and the prostate was examined. Ten-week-old male Wistar rats were exposed to three doses of radioactive MnO powder (41-100 mGy in whole body doses), stable MnO powder, or external Co γ-rays (2 Gy). Animals were necropsied on Days 3 and 61 postexposure.

Radiation-related health hazards to uranium miners.

Concerns on health effects from uranium (U) mining still represent a major issue of debate. Any typology of active job in U mines is associated with exposure to U and its decay products, such as radon (Rn), thorium (Th), and radium (Ra) and its decay products with alpha-emission and gamma radiation. Health effects in U miners have been investigated in several cohort studies in the USA, Canada, Germany, the Czech Republic, and France.

Epidemiological Characteristics and Forecast of COVID-19 Outbreak in the Republic of Kazakhstan.

Background: Coronavirus disease 2019 (COVID-19) pandemic entered Kazakhstan on 13 March 2020 and quickly spread over its territory. This study aimed at reporting on the rates of COVID-19 in the country and at making prognoses on cases, deaths, and recoveries through predictive modeling. Also, we attempted to forecast the needs in professional workforce depending on implementation of quarantine measures.

Effects of Internal Exposure to MnO Powder on Blood Parameters in Rats.

Objective: The pathological effects of internal exposure to manganese dioxide-56 (MnO) radioisotope particles have been previously examined in rats. Here we further examine the effects of MnO, focusing on changes in blood parameters.

Materials And Methods: Ten-week-old male Wistar rats were exposed to 3 doses of neutron-activated MnO powder, nonradioactive MnO powder, or external 60Co γ-rays (1 Gy, whole body).

Association of radiation risk in the second and third generations with polymorphisms in the genes CYP1A1, CYP2E1, GSTP1 and changes in the thyroid.

Background: To study the association of radiation risk in the 2nd -3rd generations with polymorphisms in the genes CYP1A1, CYP2E1, GSTP1 and changes in the thyroid.

Methods: 5 polymorphic gene variants (rs1048943, rs4646421, rs2070676, rs3813867, rs1695) were studied in 399 people living in the East Kazakhstan region in this research. 248 people of the 2nd - 3rd generation lived in the territory with radiation exposure in Abai, Borodulikha areas, and 151 people the comparison group lived in Kurchum district without radiation exposure comparable in sex and age with control group.

Trace element biomonitoring in hair and blood of occupationally unexposed population residing in polluted areas of East Kazakhstan and Pavlodar regions.

Introduction: Eastern and North-Eastern regions of Kazakhstan are considered to be environmentally disadvantaged due to industrial pollution and activity of the former Semipalatinsk Nuclear Test Site. Ferrous metallurgy is represented by the world's largest ferroalloy plant located in Aksu. In addition to a ferroalloy plant, Aksu is the home for the largest thermal power plant in Kazakhstan.