Laser-assisted immobilization causes no direct damage to sperm DNA.
- Author:
Zhi-peng XU
1
;
Hai-xiang SUN
;
Ya-li HU
;
Ning-yuan ZHANG
;
Xia ZHAO
Author Information
- Publication Type:Journal Article
- MeSH: Comet Assay; DNA Damage; radiation effects; Humans; In Situ Nick-End Labeling; In Vitro Techniques; Lasers; Male; Semen; radiation effects; Sperm Motility; Spermatozoa
- From: National Journal of Andrology 2007;13(3):216-218
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo determine whether laser-assisted immobilization of sperm damages sperm DNA.
METHODSTwenty-three semen samples were selected from an IVF program. Then normal spermatozoa were obtained by swimming-up method and immobilized with the tail by 0.45 ms pulse laser. Terminal deoxynucleotidyl transferase mediated dUTP nick end labeling (TUNEL) and single cell gel electrophoresis (SCGE) were used to detect sperm DNA damage.
RESULTSThere was no significant difference either before and after laser treatment in the percentage of TUNEL-positive spermatozoa ([1.32 +/- 0.61]% vs [1.41 +/- 0.51]%, P > 0.05) or in SCGE ([1.59 +/- 0.70]% vs [1.83 +/- 0.68]%, P > 0.05).
CONCLUSIONLaser-assisted sperm immobilization may cause no direct damage to the sperm DNA.
