Abstract
The purpose of this study was to assess the association among male infertility, infection of Ureaplasma urealyticum (Uu), and microelements in seminal fluid. Semen analysis and cultivation of Uu were carried out on 160 samples of seminal fluid. The concentrations of microelements, such as arsenic (As), molybdenum (Mo), magnesium (Mg), lead (Pb), copper (Cu), cadmium (Cd), and zinc (Zn) in the samples were measured by an inductively coupled plasma quantometer (ICP). The ratios Cu/Zn and Cd/Zn in the poor spermatic quality group were obviously higher than those in seminal plasma of the group with normal spermatic quality (p<0.01 and p<0.05, respectively), whereas the concentrations of As, Mg, Mo, and Pb showed no difference in the two groups. The ratios Cu/Zn and Cd/Zn and the concentrations of As and Mg in seminal plasma infected with Uu were markedly higher than those not infected with Uu (p<0.05, p<0.01, p<0.05, and p<0.05, respectively), whereas the concentrations of Mo and Pb showed no statistical difference. The ratios Cu/Zn and Cd/Zn and the concentrations of As and Mg in seminal plasma of the semen with poor spermatic quality and Uu infection were obviously higher than those not infected with Uu (p<0.05), whereas the concentrations of Mo and Pb showed no statistical difference. Abnormally high ratios Cu/Zn and Cd/Zn as well as an overdose of As were found to be predisposed to Uu infection. Uu infection resulted in an increase of the ratios Cu/Zn and Cd/Zn and the concentrations of As and Mg in seminal fluid, which therefore caused spermatic quality decline.
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