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Reproductive effects of the parabens.

机译:对羟基苯甲酸酯的生殖作用。

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The paper on possible parabens endocrine effects by Boberg et al. [1 ] provided an ambitious review of the literature on exposure and toxicology studies for these compounds; however, the literature does not support the conclusion of these authors that the safety margin for propylparaben is "very low" based on reproductive studies in rats and mice. Part of the concern expressed by Boberg et al. is predicated on the putative estrogenicity of the parabens and their common metabolite, p-hydroxybenzoic acid. Estrogenicity of the parabens has been suggested by in vitro estrogen receptor binding studies, as summarized in Table 4 of the Boberg et al. paper. Methyl-, ethyl-, n-propyl-, and n-butylparabens were found to be about 10~(-4) times as potent as 17beta-estradiol in binding the estrogen receptor in a yeast-based assay [2]. In an MCF-7 breast cancer cell proliferation assay, these parabens were 10~(-5) to 10~(-6) times as potent as 17beta-estradiol, and the common metabolite, p-hydroxybenzoic acid, was inactive [3].
机译:Boberg等人关于对羟基苯甲酸酯内分泌作用的论文。 [1]对这些化合物的暴露和毒理学研究进行了宏大的综述;然而,根据大鼠和小鼠的生殖研究,文献不支持这些作者得出的结论,即对羟基苯甲酸丙酯的安全系数“非常低”。 Boberg等人表达的部分关注。根据对羟基苯甲酸酯及其常见代谢产物对羟基苯甲酸的假定雌激素性来确定。体外雌激素受体结合研究表明了对羟基苯甲酸酯的雌激素性,如Boberg等人的表4所述。纸。在基于酵母的检测中,发现对羟基苯甲酸甲酯,对羟基苯甲酸正丁酯和对羟基苯甲酸正丁酯的结合力是雌激素受体的17β-雌二醇的约10-(-4)倍[2]。在MCF-7乳腺癌细胞增殖试验中,这些对羟基苯甲酸酯的效力是17β-雌二醇的10〜(-5)至10〜(-6)倍,而常见的代谢产物对羟基苯甲酸则没有活性[3]。 。

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