Abstract :
The present study accompanied to evaluate the effects of laser with different wavelengths upon some
physiological parameters of blood samples in vitro. In this study, some blood samples were taken from women and
their ages ranged between 17-25 years. The blood samples were exposed to two types of laser, first laser was He-Ne
laser with wavelength 632.8nm. With power 2mW. The second laser was Nd: YVO4 with wavelength 532nm and
4mW.The blood samples were exposed to laser for two period times, 5 and 10 minutes. The present study involved
determination the effect of laser radiation on antioxidant system, the levels of catalase activity were progressively
increase (P>0.05) in both radiated blood samples. On the other hand, level of malondialdehyde (product of lipid
peroxidation) pointed out a significant fall (P
Keyword :
Laser, Antioxidant, Lipid Peroxidation, Wavelength, Blood.