کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6351234 | 1622552 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sex differences in the reduction of arsenic methylation capacity as a function of urinary total and inorganic arsenic in Mexican children
ترجمه فارسی عنوان
تفاوت جنسیتی در کاهش ظرفیت متیلاسیون آرسنیک به عنوان عملکرد کلیه ادرار و آرسنیک معدنی در کودکان مکزیکی
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
Total AsMMAVDMAVSMIiAs95% CI - 95٪ CITAS - IASInorganic arsenic - آرسنیک معدنیdimethylarsinic acid - اسید دی متیلارسینیکmonomethylarsonic acid - اسید مونومیتیلارسونیکgeometric means - به معنای هندسیPMI - شرکتهای کوچک و متوسطArsenic methylation capacity - ظرفیت متیلاسیون آرسنیک95% confidence interval - فاصله اطمینان 95٪Mexico - مکزیکodds ratio - نسبت شانس هاChildren - کودکان
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
بهداشت، سم شناسی و جهش زایی
چکیده انگلیسی
Chronic arsenic (As) exposure decreases adult and children's ability to methylate inorganic As (iAs); however, few studies have examined children's sex differences. We measured urinary concentrations of iAs, monomethylarsonic (MMA), and dimethylarsinic (DMA) acids, and calculated the primary (PMI: MMA/iAs) and secondary (SMI: DMA/MMA) methylation capacity indexes in 591 children 6-8 years in Torreón, Mexico. We determined iAs, MMA, and DMA by hydride generation cryotrapping AAS. Lineal regression models estimated associations between methylation capacity and total As (TAs) or iAs. Interactions with sex were tested at p<0.10. Boys had significantly higher TAs levels, (58.4 µg/L) than girls (46.2 µg/L). We observed negative associations between TAs and PMI (β=â0.039; p<0.18) and SMI (β=â0.08; p=0.002) with significant sex differences; PMI reduction was significant in boys (β=â0.09; p=0.02) but not in girls (β=0.021; p=0.63), p for interaction=0.06. In contrast, SMI reduction was significantly more pronounced in girls. Furthermore, negative associations PMI (β=â0.19; p<0.001) and SMI (β=â0.35; p<0.001) were a function of urinary iAs levels, independently of TAs; however, the reduction in PMI was more pronounced in boys (β=â0.24; p<0.001; girls β=â0.15; p<0.001), p for interaction=0.04. A significant negative association was observed between SMI and iAs levels without significant sex differences. TAs and iAs associations with metabolite percentages were in good agreement with those observed with methylation indexes. Our results suggest that iAs plays an important role in reducing As methylation ability and that significant sex differences are present in As metabolism. These differences merit further investigation to confirm our findings and their potential implications for arsenic toxicity in children.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental Research - Volume 151, November 2016, Pages 38-43
Journal: Environmental Research - Volume 151, November 2016, Pages 38-43
نویسندگان
Luisa Torres-Sánchez, Lizbeth López-Carrillo, Jorge L. Rosado, Valentina M. Rodriguez, Eunice Vera-Aguilar, Katarzyna Kordas, Gonzalo G. GarcÃa-Vargas, Mariano E. Cebrian,