Effects of environmental temperature change on mercury absorption in aquatic organisms with respect to climate warming.

Because of global warming, the quantity of naturally generated mercury (Hg) will increase, subsequently methylation of Hg existing in seawater may be enhanced, and the content of metal in marine products rise which consequently results in harm to human health. Studies of the effects of temperatures on Hg absorption have not been adequate. In this study, in order to observe the effects of temperature changes on Hg absorption, inorganic Hg or methylmercury (MeHg) was added to water tanks containing loaches. Loach survival rates decreased with rising temperatures, duration, and exposure concentrations in individuals exposed to inorganic Hg and MeHg. The MeHg-treated group died sooner than the inorganic Hg-exposed group. The total Hg and MeHg content significantly increased with temperature and time in both metal-exposed groups. The MeHg-treated group had higher metal absorption rates than inorganic Hg-treated loaches. The correlation coefficients for temperature elevation and absorption were significant in both groups. The results of this study may be used as basic data for assessing in vivo hazards from environmental changes such as climate warming.

Genome Sequences of Three Common Bacterial Isolates from Wastewater from the Water Processor Assembly at the International Space Station.

Bacteria from the genera Burkholderia, Ralstonia, and Methylobacterium were consistently detected in water of the life support systems at the International Space Station. Here, we report complete genomes of recent isolates that are representative of these genera to support future studies in biofilm and wastewater treatment in space habitats.

Draft genomes of Lactobacillus delbrueckii and Klebsiella pneumoniae coexisting within a female urinary bladder.

Here, we present the draft genome sequences of Lactobacillus delbrueckii and Klebsiella pneumoniae, both isolated from the urinary bladder of an asymptomatic post-menopausal female patient with a diagnosis of recurrent urinary tract infections. These genomes will facilitate analyses of interbacterial interactions in the urinary microbiome.

Association between Dental Caries and Handgrip Strength: In a Population-Based Study in Korea (KNHANES 2016-2018).

This study aimed to verify the relationship between handgrip strength and oral health using data from the Korea National Health and Nutrition Examination Survey, representing Korean adults. Data from the seventh survey (2016−2018) conducted by the Korea Centers for Disease Control and Prevention were utilized, and 10,607 final study participants were recruited according to the selection and exclusion criteria. A complex sample logistic regression analysis was performed to confirm the relationship between handgrip strength and dental caries according to the sex of the study participants. On analyzing the correlation in men, "C1 (DMFT: 11−32)," when compared to "C4 (DMFT: 0−3)," in Model 1 without adjustment for potential confounders, was 2.92 (95% confidence interval [CI]: 2.15−3.97) times more likely to be associated with lower handgrip strength, and a statistically significant result was detected (p < 0.001). Additionally, significant odds ratios (ORs) were confirmed for all adjusted models. In women, the ORs in Model 1 without adjustment for potential confounders were 1.41 times (95% CI: 1.14−1.75) and demonstrated a significant result; however, the results were not significant in all adjusted models 2−4. Resultantly, a significant association was detected between dental caries and handgrip strength in Korean adults.