Abstract
We aimed to assess the relationship of urine phthalate metabolite concentrations with anthropometric indices, and blood pressure in first-grade children. We detected 11 phthalate metabolites in urine and estimated anthropometric indices, including skinfold measurements, waist circumference (WC), and body mass index (BMI) in 276 children aged 6–8 years. Multivariate linear regression models were used to assess the associations between urinary phthalate metabolite levels, and anthropometric and blood pressure indices in a gender-specific manner. In boys, a 1-ng/mL increase in monobenzyl phthalate (MBzP) concentration was associated with a 0.027-cm decrease in the skinfold measurement (95% confidence interval [CI], − 0.053 to 0.001), whereas a 1-ng/mL increase in mono-ethyl-phthalate (MEP) concentration was associated with a 0.016-mm Hg decrease in systolic blood pressure (95% CI, − 0.031 to 0.001). MBzP, mono-(2-ethyl-5-carboxypentyl) phthalate (MECPP), and MEOHP concentrations were also inversely associated with WC. However, in girls, MEP concentrations were positively associated with chest measurements, but were inversely associated with WC. A 1-ng/mL increase in monomethyl phthalate concentrations was associated with a 0.039-cm increase in skinfold measurements (95% CI, 0.002 to 0.076), whereas a 1-ng/mL increase in MECPP concentrations was associated with a 0.050 cm decrease in skinfold measurements (95% CI, − 0.095 to − 0.005). In this exploratory, cross-sectional analysis, we identified various interesting associations between different phthalate metabolite levels and anthropometric indices, which suggest that some of phthalate metabolite should be considered in addition to the prevalence rates of overweight and obesity.
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Abbreviations
- WC:
-
Waist circumference
- BMI:
-
Body mass index
- MEOHP:
-
2-Ethyl-5-oxyhexyl phthalate
- CI:
-
Confidence interval
- MEHHP:
-
2-Ethyl-5-hydroxy-hexyl-phthalate
- MBzp:
-
Monobenzyl phthalate
- MEP:
-
Mono-ethyl-phthalate
- PAE:
-
Phthalate ester
- BzBP:
-
Benzylbutyl phthalate
- DiNP:
-
Diisononyl phthalate
- DnOP:
-
Di-n-Octyl phthalate
- DEHP:
-
Di-2-ethylhexyl phthalate
- DMP:
-
Dimethyl phthalate
- DEP:
-
Diethyl phthalate
- DBP:
-
Dibutyl phthalates
- MBzP:
-
Monobenzyl phthalate
- MEP:
-
Mono-ethyl-phthalate
- MnBP:
-
Mono-n-butyl phthalate
- MMP:
-
Monomethyl phthalate
- MCOP:
-
Mono(carboxyoctyl)phthalate
- MCPP:
-
Mono-(3-carboxypropyl) phthalate
- MOP:
-
Mono-iso-butyl phthalate
- MEHP:
-
Mono (2-ethylhexyl) phthalate
- MECPP:
-
Mono-(2-ethyl-5-carboxypentyl) phthalate
- MEOHP:
-
2-Ethyl-5-oxyhexyl phthalate
- ACN:
-
Acetonitrile
- LC-MS/MS:
-
High-performance liquid chromatography and mass spectrometry
- RSD:
-
Relative standard deviation
- mPAE:
-
Mono-phthalate metabolite ester
- SG:
-
Specific gravity
- LOD:
-
Limit of detection
- SBP:
-
Systolic blood pressure
- DBP:
-
Diastolic blood pressure
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Acknowledgements
We greatly appreciate the co-operation of the children who participated in this study, and their parents.
Funding
This study received grants from the Hubei University of Chinese Medicine (No. 000936).
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Responsible editor: Philippe Garrigues
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Wu, W., Wu, P., Yang, F. et al. Association of phthalate exposure with anthropometric indices and blood pressure in first-grade children. Environ Sci Pollut Res 25, 23125–23134 (2018). https://doi.org/10.1007/s11356-018-2447-7
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DOI: https://doi.org/10.1007/s11356-018-2447-7