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Assessment of Sperm Chromatin Damage by TUNEL Method Using Benchtop Flow Cytometer

  • Ana D. Martins
  • Rakesh Sharma
  • Ashok AgarwalEmail author
Chapter

Abstract

Routine semen analysis is the basic step in the laboratory evaluation of male fertility; however, it cannot explain why men are infertile even when the semen parameters are normal. Many studies evaluating sperm DNA integrity have demonstrated an inverse association between DNA fragmentation and fertilization and pregnancy rates. Advance molecular techniques allow the measurement of DNA fragmentation. A brief description of each technique is provided in this chapter. As these techniques are becoming more accessible to the clinical and research laboratories, the number of studies trying to relate DNA fragmentation with pregnancy outcome and fertilization rate is increasing every day. In this chapter we will describe the causes of sperm DNA fragmentation, highlight various techniques that are available to measure DNA fragmentation, and describe the measurement of DNA fragmentation by the terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay by flow cytometry and explain why TUNEL should be the method of choice in evaluating DNA fragmentation.

Keywords

DNA fragmentation Flow cytometer Pregnancy Spermatozoa TUNEL 

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Ana D. Martins
    • 1
    • 2
  • Rakesh Sharma
    • 1
  • Ashok Agarwal
    • 1
    Email author
  1. 1.Department of Urology and American Center for Reproductive MedicineCleveland ClinicClevelandUSA
  2. 2.Department of Microscopy, Laboratory of Cell Biology and Unit for Multidisciplinary Research in BiomedicineAbel Salazar Institute of Biomedical Sciences (ICBAS), University of PortoPortoPortugal

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