The bactericidal activity of gamm, beta and of semiconductor laser irradiation effect on Klebsiella pneumoniae (in vitro)‎

الملخص EN

This work evaluated the effect of gamma , beta and Semiconductor laser irradiation on Klebsiella pneumoniae isolated from sputum .

The experiment included a control and 4 doses of each gamma and beta irradiation ,which ranged(1.317×10-4 -0.320μSv) and (10.573-96.950μSv) respectively.

The total effect of gamma and beta irradiation on K.

pneumoniae viability was abrogated at (96.915177 & 63.100 μSv) by 137Cs and 90Sr respectively, the percentage of killing was highly (81%) and (85%) respectively and the viable cells was fewer than control .

This work evaluated also the effect of Semiconductor laser on K pneumoniae.

The experiment included a control and triplicate of K.

pneumoniae exposed to Semiconductor laser in power 5 mW , in Wavelength 650 nm.

The effect of Semiconductor laser on the viability of K.

pneumoniae was counted and percentage of killing was counted , the number of viable cells of K.

pneumoniae was fewer than control (without exposure to this laser) , but percentage of killing was higher than control .

Semiconductor laser was efficient to killing K.

pneumoniae , and the Gamma and Beta irradiation is efficient to killing K.

pneumoniae that cause many infection to human and may be cause death .

Keywords: Klebsiella pneumonia ,Semiconductor laser , Gamma and Beta irradiation