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Disorders of the Male Reproductive System

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Men's health issues are increasingly recognized as significant, with several conditions posing common threats. Among these, testicular cancer is especially prevalent in younger men, particularly those aged 20 to 35 years. The disease often manifests as a painless mass in the testicles, sometimes accompanied by a sensation of heaviness or a dull ache.
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Collection of Alfalfa Root Exudates to Study the Impact of Di2-ethylhexyl Phthalate on Metabolite Production

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Phthalate exposure and prostate cancer in a population-based nested case-control study.

Shu-Chun Chuang¹, Hui-Chi Chen², Chien-Wen Sun³

¹Institute of Population Health Sciences, National Health Research Institutes, Zhunan, Miaoli, Taiwan.

Environmental Research

|December 2, 2019

Summary

Urinary phthalate metabolites like DEHP, BBzP, and DiBP are linked to prostate cancer in abdominally obese men. This study highlights potential endocrine disruptor risks in specific populations.

Keywords:

Endocrine disruptor Environmental epidemiology Obesity Phthalate Prostate cancer

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Area of Science:

Environmental Health
Endocrinology
Urology

Background:

Phthalic acid esters are known endocrine disruptors.
Evaluating the link between urinary phthalate metabolites and prostate cancer is crucial.

Purpose of the Study:

To investigate the association between specific urinary phthalate metabolites and prostate cancer risk.
To determine if this association differs based on body composition, specifically abdominal obesity.

Main Methods:

Utilized data from the Taiwan Community-Based Cancer Screening Program (1991-2010).
Analyzed urine samples from 80 prostate cancer cases and 160 matched controls.
Quantified phthalate metabolites using liquid chromatography/electrospray ionization tandem mass spectrometry.
Employed logistic regression to assess exposure-outcome relationships.

Main Results:

Positive associations were found between di (2-ethylhexyl), butyl-benzyl, and di-isobutyl phthalates (DEHP, BBzP, DiBP) and prostate cancer.
These associations were significant in men with a waist circumference (WC) ≥90 cm (abdominal obesity).
An odds ratio of 7.76 was observed for the highest tertile of DEHP metabolite exposure in men with WC ≥90 cm.

Conclusions:

Exposure to DEHP, BBzP, and DiBP is associated with prostate cancer in abdominally obese men.
Findings suggest a potential role for these phthalates in prostate cancer development within this demographic.
Further mechanistic and toxicological studies are needed to confirm these findings.