Results 71 to 80 of about 12,925 (176)

Deep sea cold seeps are a sink for mercury and source for methylmercury

Communications Earth & Environment
The effect of seafloor cold seeps on the biogeochemical cycling of mercury (Hg) remains enigmatic. Here we demonstrate substantial enrichments of mercury and methylmercury, along with the presence of microbes capable of metabolizing mercury in sediments ...
Jiwei Li, Xiyang Dong, Yongjie Tang, Chuwen Zhang, Yali Yang, Wei Zhang, Shanshan Liu, Wei Yuan, Xinbin Feng, Lars-Eric Heimbürger-Boavida, Feiyue Wang, Lihai Shang, Xiaotong Peng   +12 more
doaj   +1 more source

Effect of Metallothionein-III on Mercury-Induced Chemokine Gene Expression

Toxics, 2018
Mercury compounds are known to cause central nervous system disorders; however the detailed molecular mechanisms of their actions remain unclear.
Jin-Yong Lee, Maki Tokumoto, Gi-Wook Hwang, Min-Seok Kim, Tsutomu Takahashi, Akira Naganuma, Minoru Yoshida, Masahiko Satoh   +7 more
doaj   +1 more source

Distribution of Total and Organic Mercury in Superficial Soils in the Upper Manzanares River Watershed, Sucre State, Venezuela

Air, Soil and Water Research, 2008
Total and organic mercury contents were determined from samples of surface soils (0-5 cm), sieved at ≤63 μm. collected from 10 different locations in the upper Manzanares River watershed, using cold vapor atomic absorption spectroscopy. Methylmercury was
Yahsέ Rojas Challa, Luisa Rojas de Astudillo, Armando Ramirez, Andrέs Escalona, Gregorio Martínez   +4 more
doaj   +1 more source

Mercury and methylmercury content in chub from the Svitava and Svratka Rivers at agglomeration Brno

Czech Journal of Food Sciences, 2009
The aim of our study was to determine the total mercury and methylmercury contents in the muscle of indicator fish, to determine the total mercury contents in the sediment, and to evaluate the health risks associated with fish contamination.
Kamila Kružíková, Jana Blahová, Renáta Kenšová, Jana Jurčíková, Dušan Hypr, Zdeňka Svobodová   +5 more
doaj   +1 more source

Combined effects of pollution and bacterial infection in Sabella spallanzanii (Gmelin, 1971)

The European Zoological Journal
Sabella spallanzanii is a Mediterranean tube-dwelling polychaete living in shallow water. Here we evaluate its ability to respond to individual and combined treatments of methylmercury exposure and Escherichia coli challenge – two typical stressors of ...
M. Dara, F. Bertini, C. La Corte, L. Bisanti, M. Staropoli, J. Vizioli, D. Parrinello, M. Cammarata, M. G. Parisi   +8 more
doaj   +1 more source

Converting flooded rice to dry farming can alleviate MeHg accumulation in grains

Ecotoxicology and Environmental Safety
The study explored the impact of water management on rice cultivation in mercury-contaminated paddy soil. The objective was to analyze the characteristics of mercury translocation by converting flooded soils to dry farming (non-flooded) to alleviate ...
Huang Liang, Shan Wang, Ping Xu, Minyan Wang, Peng Liang, Shengchun Wu, Jin Zhang, Ming Hung Wong   +7 more
doaj   +1 more source

Long-Term Environmental Methylmercury Exposure Is Associated with Peripheral Neuropathy and Cognitive Impairment among an Amazon Indigenous Population

Toxics
Widespread contamination of the Amazon basin with mercury has been reported to occur since at least the mid-80s due to heavy gold mining activity. Although initial studies have indicated that this may lead to deleterious neurological consequences to the ...
Bruno H. Rebouças, Gabriel T. Kubota, Rogério A. A. Oliveira, Bruna D. Pinto, Roberta M. Cardoso, Ana C. S. Vasconcellos, Paulo C. Basta   +6 more
doaj   +1 more source

Methylmercury demethylation and volatilization by animals expressing microbial enzymes

Nature Communications
Mercury is a highly toxic trace metal that readily biomagnifies in food webs where it is inaccessible to current bioremediation methods. Animals could potentially be engineered to detoxify mercury within their food webs to clean up impacted ecosystems ...
Kate Tepper, Josh King, Pradeep Manuneedhi Cholan, Chandran Pfitzner, Marco Morsch, Simon C. Apte, Maciej Maselko   +6 more
doaj   +1 more source

Statement on the findings presented in the Toxicological Profile for Mercury issued by the US ATSDR. [PDF]

EFSA J
European Food Safety Authority (EFSA), Bastaki M, Eskes C, Halldorsson T, Muñoz Guajardo IP, Vejdovszky K, Viviani B, Steinkellner H.   +7 more
europepmc   +1 more source

Modulation of the PI3K/AKT/mTOR and AMPK/TSC2/mTOR Pathways by N-Acetyl-L-Cysteine as a Protector of Embryonic Bodies from the Toxic Effect of Methylmercury. [PDF]

Brain Sci
Simões JLB, Braga GC, Assmann CE, Bagatini MD.   +3 more
europepmc   +1 more source