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Apoptotic M540 bodies present in human semen interfere with flow cytometry-assisted assessment of sperm DNA fragmentation and oxidation by Niloofar Sadeghi; Marziyeh Tavalaee; Abbas Kiani-Esfahani; Aron Moazamian; Parviz Gharagozloo; Robert J. Aitken; Joël R. Drevet; Mohammad Hossein Nasr-Esfahani is a Medicine article available to read on EtoBox.
What is Apoptotic M540 bodies present in human semen interfere with flow cytometry-assisted assessment of sperm DNA fragmentation and oxidation about?
## Abstract ## Background The use of flow cytometry (FC) to evaluate sperm DNA fragmentation via deoxynucleotidyl transferase terminal fluorescein dUTP nick-end labeling (TUNEL) has shown inconsistencies compared with conventional fluorescent microscopic analyses. It has been hypothesized that the observed discrepancies could be attributed to the presence of apoptotic bodies that can be labeled with merocyanine 540, the so-called M540 bodies. In order to verify this hypothesis and determine the accuracy of our in-house FC-assisted evaluation of spermatozoa parameters, we used FC to evaluate both the fragmentation of sperm DNA using the TUNEL assay and the oxidation of sperm DNA using the 8-OHdG assay on semen samples with or without M540 bodies. ## Results We show that the presence of M540 bodies lead to underestimation of both the level of sperm DNA fragmentation and sperm DNA oxidation when using FC assisted detection systems. We also observed that this situation is particularly pertinent in semen samples classified as abnormal with respect to the routine WHO semen evaluation as they appear to contain more M540 bodies than normal samples. ## Conclusions We conclude that M540 bodi
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- Author
- Niloofar Sadeghi; Marziyeh Tavalaee; Abbas Kiani-Esfahani; Aron Moazamian; Parviz Gharagozloo; Robert J. Aitken; Joël R. Drevet; Mohammad Hossein Nasr-Esfahani
- Publisher
- Springer Science and Business Media LLC
- Published
- 2021
- Language
- EN
- Field
- Medicine (Health Sciences)