Oita University of Nursing and Health Sciences

About: Oita University of Nursing and Health Sciences is a education organization based out in Ōita, Japan. It is known for research contribution in the topics: Bronchoalveolar lavage & Eosinophilia. The organization has 126 authors who have published 276 publications receiving 5279 citations. The organization is also known as: Ōita Kenritsu Kango Kagaku Daigaku.

[Experimental and theoretical studies on radiation protective effect of a lighter non-lead protective apron].

Abstract: Non-lead aprons using composite materials are often used for radiation protective aprons instead of heavy lead aprons. However, the protective effect of the lighter, non-lead aprons has not been well evaluated, and it is not yet clear how they compare with lead aprons. Therefore, we investigated the protective performance of non-lead aprons theoretically and experimentally by comparing them with lead aprons under clinical conditions. We measured the energy spectra for direct and scattered X-rays passing through protective aprons or not, and measured doses with glass dosimeters for validation of theoretical calculations based on the energy spectra. We found that the protective effect of non-lead aprons was higher than that of lead aprons at X-ray of tube voltages of 70-100 kV, which are often used for radiography and fluorography. This demonstrated that the non-lead aprons are more useful in many situations than heavy lead aprons.

Effect of nanoparticles on the male reproductive system of mice.

Abstract: The effects of nanoparticles toward on the male reproductive system of mice were investigated. Three sizes (14, 56 and 95 nm) of carbon black nanoparticles were intratracheally administered (0.1 mg/mouse for 10 times every week) to ICR male mice to investigate their adverse effects on the reproductive function. The serum testosterone levels were elevated significantly in the 14- and 56-nm carbon nanoparticles-exposed groups. Histological examination showed partial vacuolation of the seminiferous tubules. In addition, the effects of particle number towards the male reproductive system were investigated. The particle number controlled 14-nm nanoparticles-exposed group (14 N group, which has approximately the same particle number per unit volume as the 56-nm nanoparticles) showed fewer effects than did the 56-nm nanoparticles-exposed groups. These results suggest that carbon nanoparticle-exposure has adverse effects on the mouse male reproductive function. Furthermore, the effects of nanoparticles on the male reproductive system depend on particle mass rather than particle number.

PM2.5-induced lung inflammation in mice: Differences of inflammatory response in macrophages and type II alveolar cells.

Abstract: Particulate matter 25 (