Abstract:
BACKGROUND:Adolescence and young adulthood are critical periods of human growth and development. Phthalates are environmental endocrine disruptors, and their health hazards in adolescents and young adults cannot be ignored. This study was undertaken to assess phthalate exposure and determine the associations between lifestyle behaviors and phthalate metabolite levels in Chinese adolescents and young adults. METHODS:Four hundred and seventy-eight adolescents and young adults aged 16-20 years were included in this study. The levels of mono-ethyl phthalate (MEP), mono-butyl phthalate (MBP), mono-(2-ethylhexyl) phthalate (MEHP), mono-(2-ethyl-5-oxohexyl) phthalate (MEOHP), mono-(2-ethyl-5-hydroxyhexyl) phthalate (MEHHP), mono-(2-ethyl-5-carboxypentyl) phthalate (MECPP) and mono-(2-carboxmethyl)-hexyl phthalate (MCMHP) in the subjects' urine were measured by high-performance liquid chromatography-tandem mass spectrometry. The estimated daily intake (EDI) and hazard index (HI) of phthalates were calculated based on urinary metabolite levels. Relevant information on the subjects was collected via questionnaires. The associations between phthalate metabolite levels and lifestyle behaviors were examined using the independent-sample t-test, Mann-Whitney test and multiple linear regression. RESULTS:In this study, the detection rates of all seven metabolites were >98%. The highest median metabolite concentration was MBP, which was 43.00 μg/L (33.11 μg/g creatinine). The highest median EDI was for di-(2-ethylhexyl) phthalate (DEHP), which was 2.40 μg/kg-bw/day (volume-based) and 1.51 μg/kg-bw/day (creatinine-based). 2.7% (volume-based) and 1.0% (creatinine-based) of the subjects showed excessive HITDI (HI of the tolerable daily intake) values, which indicated the cumulative risk of anti-androgenic effects. Furthermore, factors significantly associated with phthalate metabolite levels included the use of plastic food packages (DEHP metabolites), physical exercise (MEOHP), the frequency of fast food consumption (MBP), and the frequency of skin care cosmetics and color cosmetics use (MEP). CONCLUSION:Our results suggest that Chinese adolescents and young adults are widely exposed to phthalates and their metabolite levels are influenced by lifestyle behaviors.
journal_name
Ecotoxicol Environ Safjournal_title
Ecotoxicology and environmental safetyauthors
Ding S,Zhang Z,Chen Y,Qi W,Zhang Y,Xu Q,Liu H,Zhang T,Zhao Y,Han X,Song X,Zhao T,Ye Ldoi
10.1016/j.ecoenv.2019.109541subject
Has Abstractpub_date
2019-11-15 00:00:00pages
109541eissn
0147-6513issn
1090-2414pii
S0147-6513(19)30872-3journal_volume
183pub_type
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