Current Situation and Causes Analysis of Cadmium Pollution in the Kakehashi River Basin.

Cadmium (Cd) pollution is a public environmental problem worthy of attention. Long-term exposure to Cd may have adverse effects on human health. Our previous study showed that urinary concentration of Cd (U-Cd) in the residents decreased when Cd-polluted paddy soil was removed. However, from 2008 to 2014, the concentration of U-Cd increased. At the same time, the concentration of urinary ß2-microglobulin (ß2-MG), which is considered to be an early sign of cadmium-induced renal dysfunction, increased continuously. To find the cause of elevated urinary cadmium (U-Cd) in residents of cadmium-contaminated areas, we measured the concentration of cadmium in the blood (B-Cd) of 29 elderly residents (15 female and 14 male) and edible rice (R-Cd), and correlations between R-Cd, B-Cd, and U-Cd were analyzed in the formerly cadmium-polluted areas (the Kakehashi River basin). In 2016, we collected blood, urine, and rice samples from each participant. The analysis showed a significant correlation between age and B-Cd, U-Cd, and ß2-MG. However, there was no significant correlation between R-Cd and U-Cd, B-Cd, or ß2-MG concentrations. Although we found a slightly higher level of Cd in rice and urine than reported in 2008, we cannot be sure that it indicates an increased Cd contamination in the Kakehashi River basin because larger studies are required for such a conclusion. The increased urinary Cd concentrations in this area may be because Cd in tissues and organs returns to blood and urine as participants age, which leads to an increasing trend.

Competency model for public health nurses working on tobacco control in local governments in Japan: A qualitative study.

AIM: In Japan, public health nurses play a major role in tobacco control at the local government level. However, the competencies required are not clear. This study aimed to identify competencies of public health nurses working on local tobacco control in Japan. METHODS: Twelve expert public health nurses from nine local governments in Japan participated in semi-structured interviews using the Behavioral Event Interview. Data analysis used the Iceberg Model and qualitative descriptive methods. RESULTS: The competencies of the public health nurses were driven by three "motives": strong motivation to pioneer and change tobacco control; unwavering determination to remove barriers to tobacco control; and strong drive to achieve tobacco control. Public health nurses also showed three "attitudes": a partnership-oriented stance to delivering tobacco control; enthusiasm for evidence-based goals; and commitment to developing expertise and roles. These underpinned eight "skills": advocating to raise awareness of the need for tobacco control; positioning tobacco control as a policy issue based on regional and social situations; creating an organizational system for tobacco control; pioneering opportunities for intervention and delivering effective and locally appropriate activities; evaluating and improving the quality of tobacco control measures; developing and establishing community-based measures for tobacco-free communities; expanding activities by strategically collaborating with stakeholders; and coordinating and negotiating to avoid conflicts. CONCLUSIONS: Public health nurses who promote tobacco control share characteristics, despite barriers such as resistance inside and outside the organization. In the future, these could be used as indicators of the competency of public health nurses working on local tobacco control.