The Effect of Bnzene Products on Seminal Parameters苯产品对精液参数的影响.docVIP

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The Effect of Bnzene Products on Seminal Parameters苯产品对精液参数的影响.doc

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The Effect of Bnzene Products on Seminal Parameters苯产品对精液参数的影响

THE EFFECT OF BENZENE ON SEMINAL PARAMETERS AND TESTICULAR FUNCTION By Alayman F. Hussein, Mamdouh Abol-Nasr, and *Manal Abd El-Aziz Departments of Urology and *Forensic Medicine El-Minia Faculty of Medicine ABSTRACT: Objective: To investigate the effect of prolonged exposure to benzene on the semen parameters and hence male reproductive function among men working at gas stations and occupationally exposed to these chemical substances. Participants: Eighty-eight workers at gasoline service stations with a mean age of 33.51±5.72 (Range: 24-52) were included in this study. Participants were exposed to benzene and related products with a duration of exposure varied from one upto 28 years (mean: 8.57±5.39). Methods: All participants are subjected to clinical history taking and physical examination including measuring the size of both testes. Semen analyses were performed to all participants. In addition, we measured a morning blood sample for serum testosterone and follicular stimulating hormones. The data were then studied and analyzed for the correlation between the seminal parameters and hormonal profile, and the duration of exposure to benzene Results: The most evident abnormal semen characteristics include reduction in sperm concentration, motility, normal morphological forms, and the semen volume. The duration of exposure correlates with the declined quality of seminal variables. We found that sperm motility and concentration are affected first (after 5 years), then sperm morphology, and seminal volume are affected later (after 7 years). Conclusion: Occupational exposure to benzene could adversely interfere with the human reproduction and fertility. The mechanism of these effects is not known. Further molecular biological studies on the male reproductive organs are required. KEY WORDS: Benzene Semen Male infertility Aromatic hydrocarbons INTRODUCTION: Benzene is a liquid inflame-mable, and volatile organic compound that is obtained on refinement of th