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- Title
Modified Isocratic Capillary Electrophoresis Detection of Cell-free DNA in Semen.
- Authors
Chou, Jennifer S.; Jacobson, John D.; Patton, William C.; King, Alan; Chan, Philip J.
- Abstract
Purpose: The objectives were: i) to analyze semen for the presence of cell-free DNA and ii) to determine the association between sperm parameters and cell-free DNA. Methods: Cell-free DNA in semen (N = 25 cases) were detected using the modified capillary gel electrophoresis (CE) procedure. SYBR-Gold was used to stain high (12 Kb) and low (1 Kb) molecular weight DNA fragments and the images analyzed. Results: The quantity of low-molecular weight cell-free DNA was positively correlated to rapid progression, curvilinear velocity (>40 μ/s), normal strict morphology and capacitation index. High-molecular weight cell-free DNA intensity index was negatively correlated to post-wash hyperactivation. Sperm concentration was not related to cell-free DNA quantity. The sperm freezing process did not increase cell-free DNA but reduced the more labile low-molecular weight cell-free DNA. Conclusions: Cell-free DNA present in semen was correlated to important sperm parameters linked to normal sperm function. The data suggested the possible use of cell-free DNA as a marker of semen quality. This study reports on the novel finding of cell-free DNA released along with sperm during each ejaculation.
- Subjects
SEMEN; SPERMATOZOA; GEL electrophoresis; DNA; ELECTROPHORESIS; GENETICS
- Publication
Journal of Assisted Reproduction & Genetics, 2004, Vol 21, Issue 11, p397
- ISSN
1058-0468
- Publication type
Article
- DOI
10.1007/s10815-004-7527-6