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Arsenic in Latin America
(Centro de Estudios sobre Ciencia, Desarrollo y Educación Superior, 2019-06)
An overview about the presence of arsenic (As) in waters of Latin America (LA) is presented. Aspects on As occurrence, effects of As on human health, regulations regarding the maximum allowable concentration of As in ...
Geochemical evidence for arsenic cycling in living microbialites of a High Altitude Andean Lake (Laguna Diamante, Argentina)
(Elsevier Science, 2020-06)
Arsenic is best known as an environmental toxin, but this element could also serve as a metabolic energy source to certain microorganisms. Moreover, As cycling may have driven microbial life on early Earth prior to oxygenation ...
Arsenic metabolism in high altitude modern stromatolites revealed by metagenomic analysis
(Nature Publishing Group, 2017-12)
Modern stromatolites thrive only in selected locations in the world. Socompa Lake, located in the Andean plateau at 3570 masl, is one of the numerous extreme Andean microbial ecosystems described over recent years. Extreme ...
The role of silicon in metabolic acclimation of rice plants challenged with arsenic
(Environmentaland Experimental Botany, 2018)
Proteomic Approach of Adaptive Response to Arsenic Stress in Exiguobacterium sp. S17. An Extremophile Strain Isolate from High Altitude Andean Lake Stromatolite
(Springer Tokyo, 2013-04)
North West of Argentina is particularly rich in wetlands located in the Puna in a range of altitude of 3,600 to 4,600 m above sea level. Most of these high-altitude Andean lakes are inhospitable areas suffering from extreme ...
ArsH protects Pseudomonas putida from oxidative damage caused by exposure to arsenic
(2020-03-23)
The two As resistance arsRBC operons of Pseudomonas putida KT2440 are followed by a downstream gene called arsH that encodes an NADPH‐dependent flavin mononucleotide reductase. In this work, we show that the arsH1 and (to ...
Exposure to Inorganic Arsenic Is Associated with Increased Mitochondrial DNA Copy Number and Longer Telomere Length in Peripheral Blood
(Frontiers, 2016-08)
Background: Exposure to inorganic arsenic (iAs) through drinking water causes cancer. Alterations in mitochondrial DNA copy number (mtDNAcn) and telomere length in blood have been associated with cancer risk. We elucidated ...
Arsenic metabolism in high altitude modern stromatolites revealed by metagenomic analysis
(2017)
Modern stromatolites thrive only in selected locations in the world. Socompa Lake, located in the Andean plateau at 3570 masl, is one of the numerous extreme Andean microbial ecosystems described over recent years. Extreme ...
Distribution and Chemical Speciation of Arsenic in Ancient Human Hair Using Synchrotron Radiation
(American Chemical Society, 2014)
Pre-Columbian populations that inhabited the
Tarapacá mid river valley in the Atacama Desert in Chile
during the Middle Horizon and Late Intermediate Period (AD
500−1450) show patterns of chronic poisoning due to
exposure ...