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Arsenic is highly detrimental to the innate and the adaptive immune system of the body. [64] When the amount of unfolded and misfolded proteins in endoplasmic reticulum stress is excessive, the unfolded protein response (UPR) is activated to increase the activity of several receptors that are responsible the restoration of homeostasis. [64]
Arsenic poisoning (or arsenicosis) is a medical condition that occurs due to elevated levels of arsenic in the body. [4] If arsenic poisoning occurs over a brief period of time, symptoms may include vomiting , abdominal pain , encephalopathy , and watery diarrhea that contains blood . [ 1 ]
Research has not been conducted to determine whether small amounts of arsenic may play a role in human metabolism. [17] [18] However, arsenic poisoning occurs in multicellular life if quantities are larger than needed. Arsenic contamination of groundwater is a problem that affects millions of people across the world.
Arsenic trioxide also affects the intracellular concentration of glutathione, which is a crucial component of the redox system (it removes radicals and reduces hydrogen peroxide). It also participates, along with peroxidase and catalase , in regulating the levels of reactive oxygen species. [ 46 ]
The Marsh test treats the sample with sulfuric acid and arsenic-free zinc. Even if there are minute amounts of arsenic present, the zinc reduces the trivalent arsenic (As 3+). Here are the two half-reactions: Oxidation: Zn → Zn 2+ + 2 e − Reduction: As 2 O 3 + 12 e − + 6 H + → 2 As 3− + 3 H 2 O. Overall, we have this reaction:
Immune Attack is an educational video game created by the Federation of American Scientists and Escape Hatch Entertainment. Early development of the game was done by Brown University, in collaboration with the University of Southern California, under a grant from the National Science Foundation.
Arsenate is the major arsenic form in oxidizing environments; however, in one study, bacteria from arsenic-contaminated soil at a smelter site was able to reduce As(+5) to As(+3) under anaerobic conditions at arsenic concentration as high as 75 mg/L. [3] Arsenate-respiring bacteria and Archaea have also recently been isolated from a diversity of natural environments, including freshwater ...
3-D Body Adventure is a 1994 educational video game developed by Knowledge Adventure and published by Levande Böcker i Norden for MS-DOS, Mac OS, Microsoft Windows.. In 2014, Jordan Freeman Group, a subsidiary of ZOOM, officially released the title amongst other Knowledge Adventure titles, having secured the exclusive rights to upgrade and re-release the company's back-catalog to play on ...