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Yulia Efremova

CBRN, Medical & Rescue Service Research & Development Russian Federation

Mrs. Yulia Efremova MSc

Future Forces Forum

Czech Technical University in Prague, Faculty of Biomedical Engineering


Influence of Therapeutic Laser on Leucocytes in Gama-irradiated Mice

POSTER: Leukopenia is one of the most influential causes of high mortality rates of organisms with acute radiation syndrome. Purpose The purpose of this study was to investigate the influence of 940-nm diode laser on count of some types of leukocytes in gamma-irradiated mice. Material and Methods Mice were assigned to eight groups according to the type(s) of influence: (1) no influence, (2) gamma radiation (8.7 Gy), (3) 940-nm diode laser at final energy 33 J, (4) 132 J and (5) 200 J, and (6, 7, 8) combination of gamma radiation (8.7 Gy) and laser (33, 132 and 200 J). Each group was randomly subdivided into 2 subgroups, where mortality of mice and counts of leukocytes were analysed. Results 940-nm diode laser at 132 J significantly decreased mortality rate of mice (p<0,05). In the same group, counts of leukocytes were significantly higher than in other gamma-irradiated groups (p<0,05). Conclusion 940-nm diode laser at 132 J decreases mortality of gamma-irradiated mice and recovers count of leukocytes in blood. Mechanisms responsible for these effects will be investigated in further studies. This work was supported by Studentská grantová soutěž of Czech Technical University in Prague (SGS15/230/OHK4/3T/17).

Curriculum Vitae

In 2009 she graduated from Siberian State Medical University (Russian Federation). She is a Ph.D. candidate and Associate professor at the Department of Health Care Disciplines and Population Protection, Czech Technical University in Prague. She is author of original paper with impact factor, proceeding paper and other publications. Yulia Efremova is active participant of conferences. Yulia Efremova is an active participant in resident and international conferences dealing mainly with issues of non-invasive laser and physiotherapy. In her scientific work she studies intracellular changes after treatment with non-invasive lasers, influence of laser on levels of cytokines and the interaction of ionizing and non-ionizing radiation.

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