Application of laser irradiation for stimulation of gun wound reparation process

2006 ◽  
Author(s):  
I. D. Kosachev ◽  
S. A. Varzin
Keyword(s):  
Laser Irradiation ◽  
Wound Reparation ◽  
Stimulation Of

Stimulation of MCM3 Gene Expression in Osteoblast by Low Level Laser Irradiation

2001 ◽  
Vol 16 (3) ◽  
pp. 213-217 ◽  
Author(s):  
M. Yamamoto ◽  
K. Tamura ◽  
K. Hiratsuka ◽  
Y. Abiko
Keyword(s):  
Gene Expression ◽  
Laser Irradiation ◽  
Low Level ◽  
Low Level Laser ◽  
Level Laser ◽  
Low Level Laser Irradiation ◽  
Stimulation Of

scholarly journals Stimulation of TRPV1 by Green Laser Light

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Quanbao Gu ◽  
Lina Wang ◽  
Fang Huang ◽  
Wolfgang Schwarz
Keyword(s):  
Laser Irradiation ◽  
Cell Activation ◽  
Laser Light ◽  
Green Light ◽  
Medical Application ◽  
Green Laser ◽  
Ruthenium Red ◽  
Mast Cell Activation ◽  
Acupuncture Points ◽  
Stimulation Of

Low-level laser irradiation of visible light had been introduced as a medical treatment already more than 40 years ago, but its medical application still remains controversial. Laser stimulation of acupuncture points has also been introduced, and mast-cells degranulation has been suggested. Activation of TRPV ion channels may be involved in the degranulation. Here, we investigated whether TRPV1 could serve as candidate for laser-induced mast cell activation. Activation of TRPV1 by capsaicin resulted in degranulation. To investigate the effect of laser irradiation on TRPV1, we used theXenopusoocyte as expression and model system. We show that TRPV1 can functionally be expressed in the oocyte by (a) activation by capsaicin (K1/2= 1.1 μM), (b) activation by temperatures exceeding 42°C, (c) activation by reduced pH (from 7.4 to 6.2), and (d) inhibition by ruthenium red. Red (637 nm) as well as blue (406 nm) light neither affected membrane currents in oocytes nor did it modulate capsaicin-induced current. In contrast, green laser light (532 nm) produced power-dependent activation of TRPV1. In conclusion, we could show that green light is effective at the cellular level to activate TRPV1. To which extend green light is of medical relevance needs further investigation.

scholarly journals Stimulation of Hatching Efficiency in Capsulated Cysts of Artemia fransiscana Using 890 nm Diode Laser

2011 ◽  
Vol 8 (1) ◽  
pp. 66-72
Author(s):  
Baghdad Science Journal
Keyword(s):  
Energy Density ◽  
Laser Irradiation ◽  
Diode Laser ◽  
Exposure Time ◽  
Laser Light ◽  
Live Food ◽  
Optimum Dose ◽  
Hatching Percentage ◽  
Stimulation Of

Artemia fransiscana is one of the most important live food for commercial larval aquaculture. The aim of this study is to investigate the effects of 890 nm diode laser irradiation on Artemia capsulated cysts using (1-10) minutes exposure time, and 2.26x10-3 J/cm2 Fluence. The Artemia samples were obtained from two locations: Dyalaa and Basraa. After irradiation, hatching percentage (H %) and hatching efficiency(HE) of Artemia were measured after 24 and 48 hours of incubation. The results of the effect of laser light on the capsulated cysts from Dyalaa showed that the optimum dose for enhancing (H %) after 24 hours of incubation is using 10 minutes exposure time, while after 48 hours of incubation the (H %) enhancement can be achieved using 6 minutes exposure time. The optimum exposure times for (HE) enhancement after 24 and 48 hours of incubation were 5 and 7 minutes. The results of the effect of laser light on the capsulated cysts from Basraa showed that after 24 hours of incubation, the optimum exposure times for enhancement (H%) was 9 minutes, while after 48 hours of irradiation the best exposure times was 5 minutes . Very effective enhancement of (HE) was noticed after 24 hours of irradiation at 3 minutes exposure time using 2.26x10-3 J/cm2 Fluence. No enhancement was observed after 48 hours of irradiation In conclusion, 890 nm diode laser irradiation can be used successfully for increasing Hatching percentage (H %) and Hatching Efficiency (HE) of Artemia capsulated cysts using certain energy density and certain exposure times

scholarly journals Bacteria as agents of biocontrol of phytopathogens after laser stimulation and of their metabolites’ impact on plants

2020 ◽  
Vol 23 ◽  
pp. 02002
Author(s):  
Marina V. Maslova ◽  
Ekaterina V. Grosheva ◽  
Andrey V. Budagovsky ◽  
Olga. N. Budagovskaya
Keyword(s):  
Bacillus Subtilis ◽  
Laser Irradiation ◽  
Photosynthetic Activity ◽  
Plant Protection ◽  
Plant Protection Products ◽  
Laser Stimulation ◽  
Fourfold Increase ◽  
The Impact ◽  
Number Of Cells ◽  
Stimulation Of

The problem of increasing activity of phytopathogen antagonist bacteria under the influence of laser irradiation is considered in this paper. Studies on Bacillus subtilis and Pseudomonas fluorescens from various plant protection products have shown that use of laser irradiation leads to an increase in the number of cells in bacterial suspensions. This indicator increased to a maximum of two times at effective exposures in comparison with the non-irradiated variants. That was justification for the need to study the nature of the impact of excessive content of metabolites in the substrate synthesized by such a quantity of bacteria from biological products, which is 2 or more times higher than the number of cells in the standard solutions. With a twofold and fourfold increase in the concentration of metabolites of the studied bacteria compared to their standard content in the medium, the photosynthetic activity of cucumber microplants increased by more than 32%. This suggests that laser stimulation of bacteria – agents of biocontrol of diseases does not adversely affect the functional state of plants.

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