Effect of low-intensity laser irradiation on state of blood proteins

Genkin, V. M.; Novikov, V. F.; Paramonov, L. V.; Él'kina, B. I.

doi:10.1007/bf00840655

Cited by 9 publications

(2 citation statements)

References 2 publications

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“…Moreover, higher doses of laser failed to induce apparent changes in ESR value in spite of its recognizable influence on MCV (table 1), this may indicate that at this dose it reaches the threshold level and the bio-stimulation is replaced by bio-inhibition [15].However, the outer possible important ESR should not be neglected, like plasma proteins including fibrinogen and globulin. Previously reported that He-Ne laser (638.2 nm) seems to change the charges in plasmaproteins with dose and incubation time after irradiation [16]. Unfortunately, this factor would not estimated in this work; hopefully it will be done in future work.…”

Section: Effect Of Laser On Erythrocytes Sedimentation Rate and Some mentioning

confidence: 85%

Effect of laser on erythrocytes sedimentation rate and some hematological parameters

Shaker

Rasheed

Salman

2017

J. Fac. Med Baghdad

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Background: This study was conducted in pursuit of gaining an understand effects of the low level laser irradiation on whole blood is very essential way in revealing the mechanisms of the action of laser radiation on biological tissues. Objective: The purpose of this study is to investigate the in vitroeffect of laser radiation on some hematological parameters and erythrocyte sedimentation rate. Subject and Method: Blood samples were obtained from 30 healthy volunteers, each sample was divided into four new samples, one of them was considered as control while the other three were exposed to three different laser doses. Thewavelength of532nm was used for irradiation with 4mm diameter beam spot on blood samples, with power density of 796.17mW/cm2. The irradiation times were 1.8, 3.7and 6.2 secand so the different doses of irradiation 1.5,3 and 5 J/cm2, respectively. Results: The erythrocyte sedimentation rate was measured after laser irradiation and compared with un-irradiated control sample. The results of this study showed thaterythrocyte sedimentation rate value increased significantly with a dose of 1.5J/cm² but not with the othertwo doses' values in male persons but not in females. Moreover, the mean cell volume shows significant decrement post irradiation. Conclusion: Laser irradiation induces physical changes in red blood cell membrane permeability and blood viscosity and consequently alters erythrocyte sedimentation rate.

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Section: Effect Of Laser On Erythrocytes Sedimentation Rate and Some mentioning

confidence: 85%

Effect of laser on erythrocytes sedimentation rate and some hematological parameters

Shaker

Rasheed

Salman

2017

J. Fac. Med Baghdad

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“…25,26 He-Ne laser (638.2 nm) was reported to change the charges in plasma proteins after incubation and irradiation time. 27 Remarkable variations in some blood properties, such as sedimentation rate, viscosity, and the deformability, were demonstrated after irradiation with red laser in vitro. 28,29 These findings, in addition to those given in this study, offer vital evidence for the interaction between LLL and plasma, causing changes in whole blood characteristics.…”

Section: Figmentioning

confidence: 99%

Comparative In Vitro Study: Examining 635 nm Laser and 265 nm Ultraviolet Interaction with Blood

Elblbesy

2019

Photobiomodulation, Photomedicine, and Laser Surgery

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Objective: This study represents a viable assessment of the effect of the low-level laser (LLL) of 635 nm and ultraviolet (UV) of 265 nm on biophysical properties of blood. Materials and methods: Blood samples were divided into two main groups: one for irradiation by LLL and the other for irradiation by UV. Each group was divided into three aliquots. First aliquot: whole blood was exposed to radiation. The second aliquot: erythrocytes were exposed to radiation and resuspended in autologous plasma. The third aliquot: plasma was exposed to radiation, and erythrocytes were resuspended in it. The following parameters were measured after irradiation by LLL and UV for all aliquots: whole blood viscosity, microscopic aggregation index, deformation index, and Zeta potential. Results: A decrease in whole blood viscosity due to irradiation by LLL was observed. To the contrary, an increase in whole blood viscosity due to irradiation by UV was detected. A significant reduction in erythrocytes' aggregation was observed as a result of LLL and UV radiation. Erythrocytes' deformability was strongly affected by UV radiation, while there was no significant effect from LLL. Another noticeable change observed was an increase in Zeta potential due to UV and a decrease in Zeta potential values, as a result of LLL irradiation. Conclusions: It can be concluded from this study that LLL and UV can be used to change some biological processes, as well as cellular properties.

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Low-intensity infrared laser increases plasma proteins and induces oxidative stress in vitro

et al. 2011

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Low-intensity laser therapy is based on the excitation of endogenous chromophores in biotissues and free-radical generation could be involved in its biological effects. In this work, the effects of the low-intensity infrared laser on plasma protein content and oxidative stress in blood from Wistar rats were studied. Blood samples from Wistar rats were exposed to low-intensity infrared laser in continuous wave and pulsed-emission modes at different fluencies. Plasma protein content and two oxidative stress markers (thiobarbituric acid-reactive species formation and myeloperoxidase activity) were carried out to assess the effects of laser irradiation on blood samples. Low-intensity infrared laser exposure increases plasma protein content, induces lipid peroxidation, and increases myeloperoxidase activity in a dose- and frequency-dependent way in blood samples. The low-intensity infrared laser increases plasma protein content and oxidative stress in blood samples, suggesting that laser therapy protocols should take into account fluencies, frequencies, and wavelengths of the laser before beginning treatment.

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Effect of low-intensity laser irradiation on state of blood proteins

Cited by 9 publications

References 2 publications

Effect of laser on erythrocytes sedimentation rate and some hematological parameters

Effect of laser on erythrocytes sedimentation rate and some hematological parameters

Comparative In Vitro Study: Examining 635 nm Laser and 265 nm Ultraviolet Interaction with Blood

Low-intensity infrared laser increases plasma proteins and induces oxidative stress in vitro

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