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Occurrences and Formation Mechanisms of Botryoidai Structures from the Sinian Dengying Formation,Sichuan Basin,China 被引量:5
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作者 LIAN Chengbo QU Fang +6 位作者 TAN Xiucheng LI Ling JIN Mindong ZENG Wei REN Quanxiong HU Guang LIU Hong 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2016年第1期384-385,共2页
ObjectiveThis study aims to characterize the occurrences and interior structural features of botryoidal structures from the Sinian Dengying Formation in the Sichuan Basin of Southwestern China, and to shed light on th... ObjectiveThis study aims to characterize the occurrences and interior structural features of botryoidal structures from the Sinian Dengying Formation in the Sichuan Basin of Southwestern China, and to shed light on their formation mechanism. 展开更多
关键词 occurrences and formation Mechanisms of Botryoidai Structures from the Sinian Dengying formation Sichuan Basin China
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Thiolated arsenicals in arsenic metabolism: Occurrence,formation, and biological implications 被引量:6
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作者 Yuzhen Sun Guangliang Liu Yong Cai 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2016年第11期59-73,共15页
Arsenic(As) is a notoriously toxic pollutant of health concern worldwide with potential risk of cancer induction, but meanwhile it is used as medicines for the treatment of different conditions including hematologic... Arsenic(As) is a notoriously toxic pollutant of health concern worldwide with potential risk of cancer induction, but meanwhile it is used as medicines for the treatment of different conditions including hematological cancers. Arsenic can undergo extensive metabolism in biological systems, and both toxicological and therapeutic effects of arsenic compounds are closely related to their metabolism. Recent studies have identified methylated thioarsenicals as a new class of arsenic metabolites in biological systems after exposure of inorganic and organic arsenicals, including arsenite, dimethylarsinic acid(DMAV), dimethylarsinous glutathione(DMAIIIGS), and arsenosugars. The increasing detection of thiolated arsenicals,including monomethylmonothioarsonic acid(MMMTAV), dimethylmonothioarsinic acid(DMMTAV) and its glutathione conjugate(DMMTAVGS), and dimethyldithioarsinic acid(DMDTAV) suggests that thioarsenicals may be important metabolites and play important roles in arsenic toxicity and therapeutic effects. Here we summarized the reported occurrence of thioarsenicals in biological systems, the possible formation pathways of thioarsenicals, and their toxicity, and discussed the biological implications of thioarsenicals on arsenic metabolism, toxicity, and therapeutic effects. 展开更多
关键词 Arsenic Thioarsenicals occurrence formation pathways Toxicity
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