Abstract：
OBJECTIVES:To evaluate catalase- and superoxide dismutase (SOD)-like activities in the seminal plasma of fertile and infertile men. METHODS:Semen samples were obtained from consecutive men presenting for vasectomy (n = 12) and infertility evaluation (n = 105) at our institution. Catalase-like activity was measured by the decrease in hydrogen peroxide after incubation with seminal plasma. SOD-like activity was measured as the inhibition of nitroblue tetrazolium reduction due to superoxide anion generation by xanthine plus xanthine oxidase. RESULTS:Mean seminal catalase-like activity (+/-SEM) in fertile men was not significantly different from that of infertile men (369 +/- 49 versus 326 +/- 17 U/mL, respectively). Mean SOD-like activity in the semen of infertile men was significantly greater than in the semen of fertile controls (46.7 +/- 1.5 versus 37.0 +/- 2.8 U/mL, respectively, P <0.05). CONCLUSIONS:Our data show that infertile men do not have deficient seminal plasma SOD- and/or catalase-like activity (two key antioxidants). These findings suggest that the high semen ROS levels in some infertile men are likely due to excessive generation of ROS rather than deficient ROS scavenging activity in semen.
journal_name
Urologyjournal_title
Urologyauthors
Zini A,Garrels K,Phang Ddoi
10.1016/s0090-4295(00)00453-2subject
Has Abstractpub_date
2000-06-01 00:00:00pages
922-6issue
6eissn
0090-4295issn
1527-9995pii
S0090429500004532journal_volume
55pub_type
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