کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1905748 | 1534737 | 2007 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: The pesticide adjuvant, Toximul™, alters hepatic metabolism through effects on downstream targets of PPARα The pesticide adjuvant, Toximul™, alters hepatic metabolism through effects on downstream targets of PPARα](/preview/png/1905748.png)
Previous studies demonstrated that chronic dermal exposure to the pesticide adjuvant (surfactant), Toximul™ (Tox), has significant detrimental effects on hepatic lipid metabolism. This study demonstrated that young mice dermally exposed to Tox for 12 days have significant increases in expression of peroxisomal acyl-CoA oxidase (mRNA and protein), bifunctional enzyme (mRNA) and thiolase (mRNA), as well as the P450 oxidizing enzymes Cyp4A10 and Cyp4A14 (mRNA and protein). Tox produced a similar pattern of increases in wild type adult female mice but did not induce these responses in PPARα-null mice. These data support the hypothesis that Tox, a heterogeneous blend of nonionic and anionic surfactants, modulates hepatic metabolism at least in part through activation of PPARα. Notably, all three groups of Tox-treated mice had increased relative liver weights due to significant accumulation of lipid. This could be endogenous in nature and/or a component(s) of Tox or a metabolite thereof. The ability of Tox and other hydrocarbon pollutants to induce fatty liver despite being PPARα agonists indicates a novel consequence of exposure to this class of chemicals, and may provide a new understanding of fatty liver in populations with industrial exposure.
Journal: Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease - Volume 1772, Issue 9, September 2007, Pages 1057–1064