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Abstract Title:

Effects of the reduced form of coenzyme Q10 (ubiquinol) on semen parameters in men with idiopathic infertility: a double-blind, placebo controlled, randomized study.

Abstract Source:

J Urol. 2012 Aug ;188(2):526-31. Epub 2012 Jun 15. PMID: 22704112

Abstract Author(s):

Mohammad Reza Safarinejad, Shiva Safarinejad, Nayyer Shafiei, Saba Safarinejad

Article Affiliation:

Mohammad Reza Safarinejad

Abstract:

PURPOSE: We investigated the effects of the administration of ubiquinol (a reduced form of coenzyme Q(10)) on semen parameters and seminal plasma antioxidant capacity in infertile men with idiopathic oligoasthenoteratozoospermia.

MATERIALS AND METHODS: A total of 228 men with unexplained infertility were randomly assigned 1:1 into 2 groups. Group 1 (114) received 200 mg ubiquinol daily by mouth for 26 weeks and group 2 (114) received a similar regimen of placebo. After completion of the 26-week treatment phase, all participants were followed for another 12-week off-drug period. Primary outcomes were improvement in sperm density, sperm motility and sperm strict morphology.

RESULTS: At the end of the 26-week treatment period mean± SD sperm density in the ubiquinol and placebo groups was 28.7 ± 4.6 × 10(6)/ml and 16.8 ± 4.4 × 10(6)/ml (p = 0.005), sperm motility was 35.8% ± 2.7% and 25.4% ± 2.1% (p = 0.008), and sperm strict morphology was 17.6% ± 4.4% and 14.8% ± 4.1% (p = 0.01) of normal sperm, respectively. During the treatment period serum follicle-stimulating hormone levels decreased significantly (p = 0.02) and serum inhibin B concentrations increased significantly (p = 0.01). During the off-drug period semen parameters gradually returned to baseline values but the differences were still significant forsperm density (p = 0.03) and sperm motility (p = 0.03). The correlation coefficients analysis revealed a positive association between the duration of treatment with ubiquinol and sperm density (r = 0.74, p = 0.017), sperm motility (r = 0.66, p = 0.024) and sperm morphology (r = 0.57, p = 0.027).

CONCLUSIONS: Ubiquinol was significantly effective in men with unexplained oligoasthenoteratozoospermia for improving sperm density, sperm motility and sperm morphology.

Study Type : Human Study

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Sayer Ji
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