OBJECTIVE: To explore the possible association between internal exposure levels of 3-phenoxybenzoic acid (3-PBA), an urinary metabolite of pyrethroids, and altered semen quality in Chinese men. DESIGN: A retrospective case-control study. SETTING: Center of clinical reproductive medicine. PATIENT(S): Three hundred seventy-six men with nonobstructive infertility. MAIN OUTCOME MEASURE(S): Urinary 3-PBA concentration, semen volume, sperm concentration, sperm number per ejaculum, sperm motility, sperm progression, and motion parameters. RESULT(S): The median 3-PBA concentration was 0.879 microg/g of creatinine. There was suggestive association between increased creatinine-adjusted 3-PBA quartiles and sperm concentration (odd ratios for the first, second, third, and fourth quartiles were 1.00, 1.31, 1.73, and 2.04, respectively), whereas sperm volume, sperm number per ejaculum, and sperm motility were weakly or nonsignificantly associated with 3-PBA quartiles. The sperm progression and motion parameters associated with creatinine-adjusted 3-PBA levels were straight line velocity (VSL) and curvilinear velocity (VCL). CONCLUSION(S): These observed associations between 3-PBA levels and some altered semen quality indicated the reproductive effects of pyrethroid exposure on adult men.
OBJECTIVE: To explore the possible association between internal exposure levels of 3-phenoxybenzoic acid (3-PBA), an urinary metabolite of pyrethroids, and altered semen quality in Chinese men. DESIGN: A retrospective case-control study. SETTING: Center of clinical reproductive medicine. PATIENT(S): Three hundred seventy-six men with nonobstructive infertility. MAIN OUTCOME MEASURE(S): Urinary 3-PBA concentration, semen volume, sperm concentration, sperm number per ejaculum, sperm motility, sperm progression, and motion parameters. RESULT(S): The median 3-PBA concentration was 0.879 microg/g of creatinine. There was suggestive association between increased creatinine-adjusted 3-PBA quartiles and sperm concentration (odd ratios for the first, second, third, and fourth quartiles were 1.00, 1.31, 1.73, and 2.04, respectively), whereas sperm volume, sperm number per ejaculum, and sperm motility were weakly or nonsignificantly associated with 3-PBA quartiles. The sperm progression and motion parameters associated with creatinine-adjusted 3-PBA levels were straight line velocity (VSL) and curvilinear velocity (VCL). CONCLUSION(S): These observed associations between 3-PBA levels and some altered semen quality indicated the reproductive effects of pyrethroid exposure on adult men.
Authors: Zahra Noorimotlagh; Neemat Jaafarzadeh Haghighi; Mehdi Ahmadimoghadam; Fakher Rahim Journal: Environ Sci Pollut Res Int Date: 2016-11-08 Impact factor: 4.223
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Authors: Steven T Singleton; Pamela J Lein; Fayssal M Farahat; Taghreed Farahat; Matthew R Bonner; James B Knaak; James R Olson Journal: Int J Hyg Environ Health Date: 2013-11-04 Impact factor: 5.840
Authors: Yufeng Qin; Minjian Chen; Wei Wu; Bin Xu; Rong Tang; Xiaojiao Chen; Guizhen Du; Chuncheng Lu; John D Meeker; Zuomin Zhou; Yankai Xia; Xinru Wang Journal: PLoS One Date: 2013-03-15 Impact factor: 3.240