The aim of this study was to determine whether the environmental exposure to pyrethroids affects semen quality and the level of reproductive hormones in men.
The study population consisted of 334 men who attended the infertility clinic for diagnostic purposes and who had normal semen concentration of 15 to 300 mln/mL. Participants were interviewed and provided a semen sample. The pyrethroids metabolites—3-phenoxybenzoic acid (3PBA), cis-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropane carboxylic acid (CDCCA), trans-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropane carboxylic acid (TDCCA), and cis-2,2-dibromovinyl-2,2-dimethylcyclopropane-1-carboxylic acid (DBCA) were analyzed in the urine using a validated gas chromatography ion-trap mass spectrometry method.
Urinary pyrethroids metabolites levels were significantly associated with an increase in the percentage of sperm with abnormal morphology and decrease in sperm concentration, the level of testosterone, and computer-aided semen analysis parameters.
Environmental pyrethroids exposure may affect semen quality and the level of reproductive hormones.