Techniques for Selection of Normal-Chromatin Sperm Preparations

F. N. Wang Microbofre Scientific Institute and Department of Ob/Gyn, Cathay General Hospital, Taipei, Taiwan; Southern California Fertility Institute, Los Angeles, CA, USA; Institute for Immunology/Thymus Research, Bad Harzburg, Germany

C. Y. Hong Microbofre Scientific Institute and Department of Ob/Gyn, Cathay General Hospital, Taipei, Taiwan; Southern California Fertility Institute, Los Angeles, CA, USA; Institute for Immunology/Thymus Research, Bad Harzburg, Germany

T. S. Chou Microbofre Scientific Institute and Department of Ob/Gyn, Cathay General Hospital, Taipei, Taiwan; Southern California Fertility Institute, Los Angeles, CA, USA; Institute for Immunology/Thymus Research, Bad Harzburg, Germany

C. H. C. Hsiung Microbofre Scientific Institute and Department of Ob/Gyn, Cathay General Hospital, Taipei, Taiwan; Southern California Fertility Institute, Los Angeles, CA, USA; Institute for Immunology/Thymus Research, Bad Harzburg, Germany

W. G. Karow Microbofre Scientific Institute and Department of Ob/Gyn, Cathay General Hospital, Taipei, Taiwan; Southern California Fertility Institute, Los Angeles, CA, USA; Institute for Immunology/Thymus Research, Bad Harzburg, Germany

M. C. Pesic Microbofre Scientific Institute and Department of Ob/Gyn, Cathay General Hospital, Taipei, Taiwan; Southern California Fertility Institute, Los Angeles, CA, USA; Institute for Immunology/Thymus Research, Bad Harzburg, Germany

Abstract

Various sperm preparation techniques, swim-up and Percoll gradient, and the newly developed Wang's tube system, were evaluated for their ability to recover normal-chromatin sperm. Twenty human semen samples, collected by masturbation, were studied simultaneously with the three methods. Analysis by Acridine orange fluorescence test was performed on all samples. Pretreated semen contains 58 ± 22% green sperm (fertile/normal). Treatment with Wang's tube system resulted in 99 ± 1.0% green sperm; Percoll gradient, 78 ± 11%; and swim-up technique, 72 ± 15%. It would appear that Wang's tube system yields a high-quality sperm preparation with enough concentration, very active forward progression, and greatly improved sperm morphology, while containing normal-chromatin, double-stranded DNA.

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Techniques for Selection of Normal-Chromatin Sperm Preparations

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Techniques for Selection of Normal-Chromatin Sperm Preparations

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