2 edition of Investigation of the cellular effects of low intensity laser irradiation (LILI). found in the catalog.
Investigation of the cellular effects of low intensity laser irradiation (LILI).
Hossein Esfandiary
Published
1998
by The Author] in [S.l
.
Written in English
Edition Notes
Thesis (D. Phil.) - University of Ulster, 1998.
| ID Numbers | |
|---|---|
| Open Library | OL17947297M |
Low-intensity laser irradiation has been shown to induce wound healing in conditions of reduced microcirculation, which is in part explained by systemic effects. We therefore investigated such a potential systemic effect of low-intensity laser irradiation on skin blood circulation in patients with diabetic microangiopathy. Pal et al. [36] found that the generation of ROS in irradiated ( nm, to 16 J/cm 2, to mW/cm 2 for whole cell culture irradiation; and mW/cm 2 to 20 W/cm 2 for single cell.
The effect of low-intensity laser (GaAsAl) irradiation on bone repair in the femurs of mice was investigated. An experimental model of hole injury with surgery drills was used in 20 mouse femurs followed by a study of the effect of low-energy laser irradiation on bone repair. The experimental model was divided into two groups. At W, irradiation stimulated BMP2‐induced ALP activity but not cell proliferation, whereas 1 or 5 W laser power did not induce any significant effects. Irradiation stimulated BMP2‐induced phosphorylation of Smad1/5/8 and BMP2 expression, but had no effect on the expression of inhibitory Smads 6 and 7, BMP4, or insulin‐like growth.
Abstract. Low-level red laser (LLRL)–tissue interactions have a wide range of medical applications and are garnering increased attention. Although the positive effects of low-level laser therapy (LLLT) have frequently been reported and enhanced collagen accumulation has been identified as one of the most important mechanisms involved, little is known about LLRL–collagen interactions. Low intensity laser therapy, or photobiomodulation, is capable of inducing a photobiological response inside the cells; activating the production of adenosine triphosphate (ATP), NO, and reactive oxygen species; and altering sodium–potassium pumps and calcium channels in cell membranes, as well as proving to be an efficient, noninvasive, low.
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The aim of this study was to investigate the effects of low level laser irradiation on the human osteosarcoma cell line, SAOS‐2. The cells were irradiated as a single or daily dose for up to 10 days with a GaAlAs continuous wave diode laser ( nm, net output of 90 mW, energy levels of, 1, 2, and 4 Cited by: Low Level Laser (LLL) is a special type of laser that effects on biologic systems through non-thermal means 3.
This area of investigation started with the work of Mester et al in They reported non-thermal effects of lasers on mouse hair growth 4.
According to Posten et al, properties of low Cited by: Results. Wounds that were irradiated using a wavelength of nm (1 and 20 J/cm 2) or intensity modulated nm laser light at 20 J/cm 2 were smaller in area at day 19 than the sham-irradiated controls (achieved significance level=–) and were similar to controls in respect of bacterial growth.
The remaining light protocols had no effect on wound area at day 19 although they Cited by: The effects of low level laser irradiation on cell proliferation in vitro have been investigated on different cell types including fibroblasts [27,28], endothelial cells [29], skeletal cells [ The current investigation, for which ethical permission was obtained, was designed to assess the putative neurophysiological effects of low intensity ( J/cm2) laser ( nm) irradiation upon conduction latencies in the human median nerve in by: To investigate the mechanism of cell photostimulation, we measured oxygen consumption of mitochondria during low-intensity laser irradiation at various wavelengths in vitro.
Isolated guinea-pig liver mitochondria were irradiated with a low-intensity argon laser irradiation at the wavelength of nm, nm, and nm. effects of laser at the subcellular, cellular, systemic and organismal level will lead to informed treatment Both of these suppositions require further investigation.
Schindl L, Kaun C, Wojta J: Direct stimulatory effect of low-intensity nm laser irradiation on human endothelial cell proliferation. Br J Dermatol(2) Indeed, the ability of laser ablation to change the reflectivity and color of not only silicon but also metal surfaces is a general phenomenon.
15,16 The nano-/microstructures formed by laser ablation can be replicated by transfer to a polymer mold. 17 Laser irradiation can also be used to remove tissue and control of biological cell growth.
The cell numbers, however, were slightly higher on laser specimens. The mean was 66 cells/mm 2 in the laser group and cells/mm 2 in the control group. Conclusions: The application of the diode laser at the parameters used did not have a substantially positive effect on the new attachment of PDL cells on the tooth specimens.
It remains to. 9: Berki T, Nemeth P, Hegedus J. Effect of low power, continuous wave He-Ne laser irradiation on in vivo cultured lymphatic cell lines and macrophages. Stud biophys, 3, Ananchenko VG, Khanin AG, Gostishcheva O V.
Cytological parameters of bronchoalveolar lavage in patients with chronic obstructive bronchitis exposed. Background: Low level laser therapy (LLLT) is a type of photomodulation, which uses photons to modulate biological activity.
This photobiological effect depends on the wavelength, dose, intensity, as well as cell culture conditions. One problem with most of the published data on low level laser irradiation is that most studies do not record the duration between the exposure and the evaluation.
The aim of this study was to evaluate the effects of nm diode laser on osteoclastic and osteoblastic cell proliferation-activity and RANKL/OPG release during orthodontic tooth movement. Thirty-eight albino Wistar rats were used for this experiment.
Maxillary incisors of the subjects were moved orthodontically by a helical spring with force of 20 g. AIM: To investigate low intensity laser irradiation phototherapy (LILIP) on the proliferation, mineralization and degradation of dental pulp constructs. METHODS: Stem cells from human exfoliated deciduous teeth (SHED) were grown to confluence and seeded on collagen scaffolds to create dental pulp was delivered to the dental pulp constructs using an nm GaAIAs laser at an.
Abstract Objective: The aims of the present study were to investigate the effect of low-intensity laser irradiation on the total number of mast cells as well as the percentage of degranulation in human gingiva. Blood vessel dilation was also evaluated. Background Data: It has been proposed that low-intensity laser irradiation can ameliorate pain, swelling, and inflammation.
In this study, the effect of low-power laser irradiation on the proliferation activity of HeLa cells was investigated. The cells were irradiated by a nm semiconductor BTL laser in a. Abstract. Background and objective: Low intensity laser irradiation remains a controversial treatment for non-healing wounds.
This study examines the effect of low intensity light on healing of infected skin wounds in the rat. Materials and methods: Wounds on the rat dorsum were inoculated with Pseudomonas were irradiated or sham-irradiated three times weekly from day 1 to Low level laser therapy (LLLT) is frequently used in the treatment of wounds, soft tissue injury and in pain management.
The exact penetration depth of LLLT in human tissue remains unspecified. Similar uncertainty regarding penetration depth arises in treating animals. This study was designed to test the hypothesis that transmission of LLLT in horses is increased by clipping the hair. Laser therapy: A randomized, controlled trial of the effects of low- intensity Nd:YAG laser irradiation on musculoskeletal back pain.
Archives of Physical Medicine and Rehabilitation. ;– Human red blood cells or isolated cell membranes were irradiated with low-intensity laser light ( nm) at different radiant exposures ( J/cm(2)) and light powers (fluence rate; mW. A widely tunable MMW source was set within a cell culture incubator.
To avoid the effect of heat generation due to irradiation, the intensity was maintained below 10 μW and the device was arranged such that the irradiation came from underneath the cells.
Irradiation was performed by sweeping from 70 GHz to GHz in GHz steps. An investigation was made of the action of λ = nm low-intensity red light (He–Ne laser, incandescent lamp with light filters, dye laser pumped by a copper laser) on the rate of nucleic acid.
1. Introduction. Low-level laser therapy (LLLT) is a medical treatment that uses low-energy-level lasers or light-emitting diodes to stimulate or inhibit cellular function [].US Food and Drug Administration has cleared the use of low-level lasers for the treatment of lymphedema [] and chronic pain [3, 4].Clinical applications of LLLT in otolaryngology include management of hyperacusis.Objective: Photobiostimulation and photobiomodulation (PBM) are terms applied to the manipulation of cellular behavior using low intensity light sources, which works on the principle of inducing a biological response through energy transfer.
The aim of this investigation was to identify a laboratory assay to test the effect of an infrared diode laser light ( nm) on cell fission rate.
