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Biomonitoring of organochlorine pesticides and cancer survival: a population-based study

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Abstract

Organochlorine pesticides (OCPs) are endocrine-disrupting chemicals (EDCs) that even at very low levels can cause cancer by increasing the activity of tumor cells and suppressing the immune system. There is also little information on OCPs and survival after diagnosis. The aim of this study was to monitor the concentration of OCPs in the blood serum of cancer patients and its relationship with their socio-demographic characteristics and ultimately that impact on survival time and hazard ratio (HR). This cross-sectional study included 89 diagnosed patients with cancer in Isfahan, Iran. 12 types of OCPs were measured in serum by gas chromatography (7GC) with an electron capture detector and equipped with mass spectrometer (MS). Also, participants’ questionnaire was completed to collect information. T-test, ANOVA, and Chi-square tests were used to evaluate the association between serum levels of OCPs and quantitative and qualitative information of patients. Survival analysis was also examined based on Kaplan–Meier method, log-rank test, and Cox model. The mean of total OCPs in patients’ serum was calculated to be 1.82 ± 1.36 μg/L. Concentration of 2,4′ DDE had a significant relationship with body mass index (BMI) (kg/m2) (P < 0.05). In addition, gender revealed a significant correlation in estimating survival time (P < 0.05). Non-exposure to OCPs showed a positive effect on increasing the life expectancy of patients. Lindane and endosulfan increased the risk of death by 16% and 37%, respectively, with insignificant P value (P > 0.05). The findings of the present study showed adverse effects of OCPs on patients’ survival time and increased mortality of HR. Moreover, as the first research conducted in the study area, it is suggested management of environmental, individual and social factors that could be influenced the biological accumulation of OCPs in humans and cause health promotion.

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Data availability

All data generated and analyzed during this study are available from the corresponding author on reasonable request.

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Funding

The authors would like to thank the Isfahan University of Medical Sciences, Isfahan, Iran, for its financial support (Research Project No.398359).

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Raziyeh Kiyani contributed to the investigation, data curation, and writing original draft. Bahare Dehdashti contributed to the concept, conducting the study, and writing original draft. Zahra Heidari contributed to the investigation, statistical analysis, and revising the manuscript. Seyedeh Maryam Sharafi contributed to the investigation and revising the manuscript. Mehdi Mahmoodzadeh contributed to the conducting the study and revising the manuscript. Mohammad Mehdi Amin contributed to the conceptualization, supervision, methodology, software, writing, review, and editing. All authors approved the final draft of the manuscript for submission and accept the responsibility of its content.

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Correspondence to Mohammad Mehdi Amin.

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Approval number is IR.MUI.RESEARCH.REC.1398.597.

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The authors declare no competing interests.

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Responsible Editor: Lotfi Aleya

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Kiyani, R., Dehdashti, B., Heidari, Z. et al. Biomonitoring of organochlorine pesticides and cancer survival: a population-based study. Environ Sci Pollut Res 30, 37357–37369 (2023). https://doi.org/10.1007/s11356-022-24855-z

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  • DOI: https://doi.org/10.1007/s11356-022-24855-z

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