Identification of two human sperm populations using flow and image cytometry

Molecular Reproduction and Development
X PasteurH Kiefer

Abstract

Flow cytometric studies of human sperm from fertile men display a constant and characteristic bimodal nonartifactual DNA pattern confirming the existence of two distinct populations. The main population is represented by a peak followed by a shoulder ("marginal population"). The appearance of this marginal population fluctuates with either freezing and thawing or with Percoll gradient centrifugation. We have analyzed both the main and marginal sperm populations by flow cytometry after cell sorting, laser scanning cytometry, light microscopic evaluation, and their sensitivity to DNase digestion. We have observed that the marginal population detected in fertile men represents a sperm group altered in the nuclear condensation, yielding unstable chromatin which appears more stainable with propidium iodide.

References

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Citations

Feb 16, 2010·Animal Reproduction Science·Djemil BencharifDaniel Tainturier
Apr 18, 2008·Environmental and Molecular Mutagenesis·Derek N ColeVincent L Wilson
Jun 1, 2000·Human Reproduction·G RicciS Perticarari
Nov 3, 2006·Human Reproduction·S PerticarariG Presani

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