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Abstract

Volume 2, Issue 2 (June 2000) 2, 131–134;

Comparative study on efficacy of three sperm-separation techniques

L. Xu, R.K. Lu, L. Chen, Y.L. Zheng

1.Reproduction Center, Dept. of Gynec/Obstet, First Affiliated Hospital, Shantou University Medical College, Shantou 515041, China
    2.Institute for Reproduction Medicine, Wannan Medical College, Wuhu 241001, China
    3.Central Laboratory, Shantou University Medical College, Shantou 515031, China
    
    

Advance online publication 1 June 2000

Abstract

Aim: To evaluate the comparative effectiveness of real-time sperm separation technique (Wangs tube method) and other two conventional methods in isolating high-quality sperm preparation, and to compare the spouse pregnancy rate in intrauterine insemination (IUI) with sperm preparations isolated by these methods. Methods: The effectiveness of the real-time sperm separation technique, the conventional swim-up and the Percoll discontinuous density gradient methods in isolating sperm preparations from 60 infertile patients (20 with apparently normal semen and 40, abnormal semen contaminated with microorganisms and other impurities) was evaluated and compared. The microorganisms to be removed included bacteria, virus, Chlamydia trachomaticum, Ureaplsama urealyticum, etc. The spouse pregnancy rates in IUI with sperm preparations isolated by these three techniques from 80 oligoasthenoteratospermic patients were also compared. Results: The quality (including the percentages of normal form, normal-chromatin and motile sperm, and the grade of motility) of sperm obtained by the real-time sperm separation technique was much higher (P<0.01) as compared with those by the other two methods. The Wang's tube method was also more effective in removing microorganisms and other impurities. The method provided a higher IUI pregnancy rate than the other two sperm separation techniques (P<0.05). Conclusion: The real-time sperm separation technique is the most effective method so far available in isolating high-quality sperm samples to be used in assisted reproduction.

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