首页> 外文会议>ACS(American Chemical Society) Symposium on Chemistry and Safety of Acrylamide in Food; 20040328-0401; Anaheim,CA(US) >ACRYLAMIDE AND GLYCIDAMIDE: APPROACH TOWARDS RISK ASSESSMENT BASED ON BIOMARKER GUIDED DOSIMETRY OF GENOTOXIC/MUTAGENIC EFFECTS IN HUMAN BLOOD
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ACRYLAMIDE AND GLYCIDAMIDE: APPROACH TOWARDS RISK ASSESSMENT BASED ON BIOMARKER GUIDED DOSIMETRY OF GENOTOXIC/MUTAGENIC EFFECTS IN HUMAN BLOOD

机译:丙烯酰胺和乙酰胺:基于遗传标记/突变基因作用的生物标志物指导剂量的人类血液风险评估方法

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Acrylamide (AA) is a carcinogen as demonstrated in animal experiments, but the relevance for the human situation is still unclear. AA and its metabolite glycidamide (GA) react with nucleophilic regions in biomolecules. However, whereas AA and GA react with proteins, DNA adducts are exclusively formed by GA under conditions simulating in vivo situations. For risk assessment it is of particular interest to elucidate whether AA or GA within the plasma concentration range resulting from food intake are "quenched" by preferential reaction with non-critical blood constituents or whether DNA in lymphocytes is damaged concomitantly under such conditions. To address this question dose- and time-dependent induction of hemoglobin (Hb) adducts as well as genotoxic and mutagenic effects by AA or GA were studied in human blood as a model system.
机译:动物实验证明,丙烯酰胺(AA)是致癌物,但与人类状况的相关性仍不清楚。 AA及其代谢产物缩水甘油酰胺(GA)与生物分子中的亲核区域反应。然而,尽管AA和GA与蛋白质反应,但DNA加合物仅在模拟体内情况的条件下由GA形成。为了进行风险评估,特别重要的是阐明在与食物中所引起的血浆浓度范围内,AA或GA是否通过与非关键性血液成分的优先反应而被“抑制”,或者在这种条件下淋巴细胞中的DNA是否同时被破坏。为了解决这个问题,在人体血液中作为模型系统研究了血红蛋白(Hb)加合物的剂量和时间依赖性诱导以及AA或GA的遗传毒性和诱变作用。

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