Arsenic biochemistry | Wikipedia audio article
Channel: wikipedia tts
Date: 2018-12-28

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Arsenic_biochemistry


00:01:03 1 Sources of arsenic
00:01:14 1.1 Organoarsenic compounds in nature
00:04:16 1.2 Incorrect claims of arsenic-based life (phosphorus substitution)
00:04:53 1.3 Anthropogenic arsenic compounds
00:07:06 1.3.1 Arsenic-based drugs
00:08:52 2 Methylation of arsenic
00:14:57 2.1 Excretion
00:18:20 3 Arsenic toxicity
00:20:57 3.1 Toxicity of pentavalent arsenicals
00:23:03 3.2 Toxicity of trivalent arsenicals
00:24:22 3.3 Oxidative stress
00:27:17 3.4 DNA damage
00:29:09 3.4.1 Inhibition of DNA repair
00:30:08 3.5 Neurodegenerative mechanisms
00:31:33 3.6 Immune dysfunction
00:32:20 4 Arsenic poisoning treatment
00:34:29 5 See also



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SUMMARY
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Arsenic biochemistry refers to biochemical processes that can use arsenic or its compounds, such as arsenate. Arsenic is a moderately abundant element in Earth's crust, and although many arsenic compounds are often considered highly toxic to most life, a wide variety of organoarsenic compounds are produced biologically and various organic and inorganic arsenic compounds are metabolized by numerous organisms. This pattern is general for other related elements, including selenium, which can exhibit both beneficial and deleterious effects. Arsenic biochemistry has become topical since many toxic arsenic compounds are found in some aquifers, potentially affecting many millions of people via biochemical processes.