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Latest Arsenite Stories

2012-02-23 18:00:24

A large-scale genomic study conducted in Bangladesh has discovered genetic variants that control arsenic metabolism and elevate the risk of skin lesions in people chronically exposed to arsenic. In PLoS Genetics, researchers from the University of Chicago, Columbia University, the International Center for Diarrheal Disease Research in Bangladesh, and the University of North Carolina report that genetic variants found near the enzyme for metabolizing the chemical into a less toxic form are...

2010-10-14 00:52:51

Hopkins, Baylor and Stanford scientists identify a protein folding machine in yeast cells that controls the folding of other important 'machines' that power cells, as a target for arsenite, an arsenic compound and common water contaminant Scientists have solved an important mystery about why an arsenic compound, called arsenite, can kill us, and yet function as an effective therapeutic agent against disease and infections. According to new research published in the October 2010 issue of...

2010-06-09 14:17:11

Insights into arsenic transport and tolerance Arsenic is toxic to most forms of life, and occurs naturally in soil and ground water in many regions of the world. Chronic exposure to arsenic has been linked to lung, bladder and kidney cancer, and thus there are strict limits on allowable levels or arsenic in drinking water. Chemically similar to phosphorus, arsenic forms arsenate (AsO43-), which closely resembles phosphate (PO43-). Arsenate interferes with many phosphate-requiring metabolic...

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2008-07-15 07:45:00

Although scientists have known that rice has the ability to absorb potentially harmful arsenic from the soil, they have previously been unable to describe how it works. Now, scientists in Japan may have the answer. Writing in the Proceedings of the National Academy of Sciences, Ma Jianfeng and colleagues of Okayama University's Research Institute for Bioresources said they have identified two proteins commonly found in rice plants that may be accountable for helping the crop transport...

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2008-06-10 10:27:57

Scandinavian scientists believe they may have discovered a gene that could prevent people from eating levels of the poisonous metal arsenic, which can be absorbed by crops like rice.Apparently a gene, called nodulin26-like intrinsic protein, is responsible for protecting crops by allowing them to absorb silicon in cell walls as a defense against fungal infections."Our observations ... may provide a key to the development of low arsenic crops for food production," wrote the team from the...

2007-09-28 06:00:00

By Xiao, Yabing Ling, Jie; Qian, Shahua; Lin, Anqing; Et al ABSTRACT: A novel method of preconcentration of trace arsenite and arsenate by using titanium dioxide nanoparticles as adsorbent was described. The concentrations of preconcentrated arsenite and arsenate were determined by a silver diethyldithiocarbamate spectrophotometric method without desorption. Batch adsorption experiments were carried out as a function of the pH, contact time, amount of titanium dioxide nanoparticles, and...