›› 2018, Vol. 38 ›› Issue (2): 174-.doi: 10.3969/j.issn.1674-8115.2018.02.011

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Association between exposure to organophosphate pesticides and levels of oxidative stress in pregnant women with different paraoxonase 1 genotypes

JI Lin1 , RUXIANGULI Aimuzi1, 2, ZHANG Yan1 , SHI Rong1 , ZHOU Yi-jun1 , CHENG Xiao-meng3 , WANG Xue-mei3 , TIAN Ying1 , GAO Yu1   

  1. 1. School of Public Health, Shanghai Jiao Tong University, Shanghai 200025, China; 2. MOE and Shanghai Key Laboratory of Children’s Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China; 3. Community Health Service Center of Dajiawa Lane, Binhai Economic and Technical Development District, Weifang, Shandong Province, Weifang 262737, China
  • Online:2018-02-28 Published:2018-03-09
  • Supported by:
    National Natural Science Foundation of China, 81602823; Scientific Research Program  of Shanghai Municipal Commission of Health and Family Planning, 201640174; Early Life Plan of Xinhua Hospital, Shanghai Jiao Tong University School of Medicine,  15QT08; Developing Plan of Important Weak Disciplines from Shanghai Municipal Commission of Health and Family Planning, 2016ZB0103

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Abstract:  To investigate whether paraoxonase 1 (PON1) genotypes were effect modifiers in the relationship between exposure to organophosphate pesticides (OPs) and oxidative stress level in pregnant women. Methods · A total of 204 pregnant women recruited from a hospital in Shandong Province were included in the study. Four nonspecific dialkyl phosphate (DAP) metabolites of OPs were measured in each urine sample. Levels of two oxidative stress biomarkers [total free sulfhydryl (-SH) and malondialdehyde (MDA)] were measured in serum samples. Blood samples were also analyzed for detecting PON1 genotypes (PON1-108, PON1192 and PON155). Separate linear regression models were conducted to explore the relationship between DAP metabolite levels and oxidative stress levels in all 204 pregnant women or women within each PON1 genotype. Results · There was no significant association between DAP metabolite levels and oxidative stress levels in all 204 women. Levels of dimethyl phosphates [β (95% CI): -104.10 (-191.31, -16.88)] and dialkyl phosphates [β (95% CI): -111.78 (-221.84, -1.72)] were negatively associated with -SH level among pregnant women with PON1192RR genotype, but this association was not found among women with other genotypes. Conclusion · OP exposure may be associated with a higher oxidative stress level among pregnant women with PON1192RR genotype.

Key words: oxidative stress, organophosphate pesticides, paraoxonase 1, pregnant women