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Photobiomodulation

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https://www.readbyqxmd.com/read/29131990/non-thermal-near-infrared-exposure-photobiomodulates-cellular-responses-to-ionizing-radiation-in-human-full-thickness-skin-models
#1
Anke König, Nadja Zöller, Stefan Kippenberger, August Bernd, Roland Kaufmann, Paul G Layer, Anja Heselich
Ionizing and near-infrared radiation are both part of the therapeutic spectrum in cancer treatment. During cancer therapy ionizing radiation is typically used for non-invasive reduction of malignant tissue, while near-infrared photobiomodulation is utilized in palliative medical approaches, e.g. for pain reduction or impairment of wound healing. Furthermore, near-infrared is part of the solar wavelength spectrum. A combined exposure of these two irradiation qualities - either intentionally during medical treatment or unintentionally due to solar exposure - is therefore presumable for cancer patients...
November 10, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29131717/in-vitro-effects-of-high-intensity-laser-photobiomodulation-on-equine-bone-marrow-derived-mesenchymal-stem-cell-viability-and-cytokine-expression
#2
Frances J Peat, Aimee C Colbath, Lori M Bentsen, Laurie R Goodrich, Melissa R King
OBJECTIVE: This study aimed to examine the influence of neodymium-doped yttrium aluminum garnet (Nd:YAG) laser irradiation on equine bone marrow-derived mesenchymal stem cell (MSC) viability, proliferation, and cytokine expression in vitro. BACKGROUND: Photobiomodulation of cells using monochromatic light is a technique designed to influence cellular processes. Previous studies have shown dose-dependent effects of low-level laser irradiation on cell proliferation and cytokine expression in a range of cell types and species...
November 13, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/29131369/photobiomodulation-for-traumatic-brain-injury-and-stroke
#3
REVIEW
Michael R Hamblin
There is a notable lack of therapeutic alternatives for what is fast becoming a global epidemic of traumatic brain injury (TBI). Photobiomodulation (PBM) employs red or near-infrared (NIR) light (600-1100nm) to stimulate healing, protect tissue from dying, increase mitochondrial function, improve blood flow, and tissue oxygenation. PBM can also act to reduce swelling, increase antioxidants, decrease inflammation, protect against apoptosis, and modulate microglial activation state. All these mechanisms of action strongly suggest that PBM delivered to the head should be beneficial in cases of both acute and chronic TBI...
November 13, 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/29107824/antimicrobial-photodynamic-therapy-apdt-and-photobiomodulation-pbm-660nm-in-a-dog-with-chronic-gingivostomatitis
#4
Paula Abreu Villela, Naiá de Carvalho de Souza, Juliana Durigan Baia, Marco Antonio Gioso, Ana Cecília Corrêa Aranha, Patrícia Moreira de Freitas
Chronic gingivostomatitis in dogs is an inflammatory syndrome of the oral cavity, which treatment and control of concomitant periodontitis allow healing in most of the cases. In the presence of recurrent lesions, invasive methods are necessary to treat lesions and pain. As a conservative adjuvant method, photobiomodulation (PBM) with low power laser is able to promote reduction of tissue pain and tissue inflammation besides increasing vascularization and healing, restoring the normal function of the irradiated organ in a shorter time...
October 28, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/29107204/laser-photobiomodulation-of-pro-inflammatory-mediators-on-walker-tumor-256-induced-rats
#5
Maria Carla Petrellis, Lúcio Frigo, Rodrigo Labat Marcos, Rodney Capp Pallotta, Maria Helena Catelli de Carvalho, Marcelo Nicolás Muscará, Durvanei Augusto Maria, Rodrigo Álvaro Brandão Lopes-Martins
Laser photobiomodulation or low-level laser therapy (LLLT) is recognized worldwide for its expansive use in medicine. LLLT has been reported to increase enzymatic activity, increasing the mitochondrial transmembrane potential, leading to an increased energy availability and signal transduction. Nevertheless, an inhibitory effect is also observed by the production of excessive ROS which can result the shutdown of mitochondrial energy production, and finally to apoptosis. However, the mechanism of apoptosis induced by LLLT is still not well understood...
September 18, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29103083/laser-acupuncture-induced-analgesic-effect-and-molecular-alterations-in-an-incision-pain-model-a-comparison-with-electroacupuncture-induced-effects
#6
Yen-Jing Zeng, Yu-Hsiang Lin, You-Cheng Wang, Ju-Hsin Chang, Jih-Huah Wu, Sheng-Feng Hsu, Shih-Ying Tsai, Ching-Huang Lin, Yeong-Ray Wen
Low-level laser acupuncture (LLLA) produces photobiomodulation through acupuncture point and is an alternative to low-level laser therapy. Although the analgesic effect of LLLA on chronic pain has been proven, its effect on acute postincisional pain has yet to be investigated. A plantar incision (PI) model was used to mimic human postsurgical pain. Male adult rats received GaAlAs laser irradiation at the right ST36 acupoint immediately after operation and on the following 4 days. Three laser treatment groups (two red laser groups with a 30- or 15-min treatment duration and one 30-min near-infrared laser group) were compared with sham LLLA and naive groups and an electroacupuncture (EA) group (separate study)...
November 4, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/29101708/dose-response-effect-of-photobiomodulation-therapy-on-neuromuscular-economy-during-submaximal-running
#7
Rodolfo André Dellagrana, Mateus Rossato, Raphael Luiz Sakugawa, Caetano Decian Lazzari, Bruno Manfredini Baroni, Fernando Diefenthaeler
The purpose of this study was to verify the photobiomodulation therapy (PBMT) effects with different doses on neuromuscular economy during submaximal running tests. Eighteen male recreational runners participate in a randomized, double-blind, and placebo-controlled trial, which each participant was submitted to the same testing protocol in five conditions: control, placebo, and PBMT with doses of 15, 30, and 60 J per site (14 sites in each lower limb). The submaximal running was performed at 8 and 9 km h(-1) during 5 min for each velocity...
November 3, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/29099681/beyond-the-laboratory-into-the-clinic-what-dogs-with-disk-disease-have-taught-us-about-photobiomodulation-for-spinal-cord-injury
#8
Narda G Robinson
BACKGROUND: For spinal-cord-injured (SCI) patients, integrative medicine approaches such as photomedicine and acupuncture can renew hope and offer previously unrecognized ways to help regain function and improve quality of life. OBJECTIVE: By understanding the mechanisms of action that these two modalities share, practitioners can better target specific attributes of spinal cord pathophysiology that are limiting recovery. Naturally occurring intervertebral disk disease (IVDD) in dogs affords unparalleled translational opportunities to develop treatment strategies involving photobiomodulation and acupuncture...
November 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/29099680/pre-exercise-infrared-photobiomodulation-therapy-810%C3%A2-nm-in-skeletal-muscle-performance-and-postexercise-recovery-in-humans-what-is-the-optimal-power-output
#9
Adriano Rodrigues de Oliveira, Adriane Aver Vanin, Shaiane Silva Tomazoni, Eduardo Foschini Miranda, Gianna Móes Albuquerque-Pontes, Thiago De Marchi, Vanessa Dos Santos Grandinetti, Paulo Roberto Vicente de Paiva, Treice Beatriz Gonçalves Imperatori, Paulo de Tarso Camillo de Carvalho, Jan Magnus Bjordal, Ernesto Cesar Pinto Leal-Junior
BACKGROUND: Photobiomodulation therapy (PBMT) has recently been used to alleviate postexercise muscle fatigue and enhance recovery, demonstrating positive results. A previous study by our research group demonstrated the optimal dose for an infrared wavelength (810 nm), but the outcomes could be optimized further with the determination of the optimal output power. OBJECTIVE: The aim of the present study was to evaluate the effects of PBMT (through low-level laser therapy) on postexercise skeletal muscle recovery and identify the best output power...
November 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/29099679/photobiomodulation-in-neuroscience-a-summary-of-personal-experience
#10
Shimon Rochkind
OBJECTIVE: This review summarizes personal experience with laser photobiomodulation and its potentials for the treatment of peripheral and central nerve system injuries. METHODS AND RESULTS: Laser photobiomodulation was shown to induce nerve cell activation, have a positive effect on metabolism of the nerve cells, and to stimulate nerve sprouting processes. Studies investigating the effects of laser photobiomodulation on injured peripheral nerves in rats reported immediate protective effects which increase the functional activity of the nerve, decrease or prevent scar tissue formation at the injured site, prevent or decrease degeneration in corresponding motor neurons of the spinal cord, and significantly increase axonal growth and myelinization...
November 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/29090398/photobiomodulation-therapy-for-the-improvement-of-muscular-performance-and-reduction-of-muscular-fatigue-associated-with-exercise-in-healthy-people-a-systematic-review-and-meta-analysis
#11
REVIEW
Adriane Aver Vanin, Evert Verhagen, Saulo Delfino Barboza, Leonardo Oliveira Pena Costa, Ernesto Cesar Pinto Leal-Junior
Researches have been performed to investigate the effects of phototherapy on improving performance and reduction of muscular fatigue. However, a great variability in the light parameters and protocols of the trials are a concern to establish the efficacy of this therapy to be used in sports or clinic. The aim of this study is to investigate the effectiveness, moment of application of phototherapy within an exercise protocol, and which are the parameters optimally effective for the improvement of muscular performance and the reduction of muscular fatigue in healthy people...
October 31, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/29075364/effects-of-photobiomodulation-therapy-on-oxidative-stress-in-muscle-injury-animal-models-a-systematic-review
#12
REVIEW
Solange Almeida Dos Santos, Andrey Jorge Serra, Tatiane Garcia Stancker, Maíra Cecília Brandão Simões, Marcia Ataíze Dos Santos Vieira, Ernesto Cesar Leal-Junior, Marko Prokic, Andrea Vasconsuelo, Simone Silva Santos, Paulo de Tarso Camillo de Carvalho
This systematic review was performed to identify the role of photobiomodulation therapy on experimental muscle injury models linked to induce oxidative stress. EMBASE, PubMed, and CINAHL were searched for studies published from January 2006 to January 2016 in the areas of laser and oxidative stress. Any animal model using photobiomodulation therapy to modulate oxidative stress was included in analysis. Eight studies were selected from 68 original articles targeted on laser irradiation and oxidative stress. Articles were critically assessed by two independent raters with a structured tool for rating the research quality...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29070637/effects-of-photobiomodulation-therapy-in-patients-with-chronic-non-specific-low-back-pain-protocol-for-a-randomised-placebo-controlled-trial
#13
Shaiane Silva Tomazoni, Lucíola da Cunha Menezes Costa, Layana de Souza Guimarães, Amanda Costa Araujo, Dafne Port Nascimento, Flávia Cordeiro de Medeiros, Marina Athayde Avanzi, Leonardo Oliveira Pena Costa
INTRODUCTION: Low back pain (LBP) is one of the largest and most frequent public health problems worldwide. Photobiomodulation therapy (PBMT) is a frequently used non-pharmacological therapy for the treatment of musculoskeletal disorders. However, there is little high-quality scientific evidence that demonstrates the effectiveness of PBMT in the treatment of patients with chronic LBP in the short, medium and long term. Therefore, the objective of this clinical trial is to evaluate the effects of PBMT in patients with chronic non-specific LBP in the short, medium and long term...
October 24, 2017: BMJ Open
https://www.readbyqxmd.com/read/29067616/a-clinical-review-of-phototherapy-for-psoriasis
#14
REVIEW
Ping Zhang, Mei X Wu
Psoriasis is an autoimmune inflammatory skin disease. In the past several decades, phototherapy has been widely used to treat stable psoriatic lesions, including trunk, scalp, arms and legs, and partial nail psoriasis. A variety of light/lasers with different mechanisms of action have been developed for psoriasis including ultraviolet B (UVB), psoralen ultraviolet A (PUVA), pulsed dye laser (PDL), photodynamic therapy (PDT), intense pulsed light (IPL), light-emitting diodes (LED), and so on. Because light/laser each has specific therapeutic and adverse effects, it is important to adequately choose the sources and parameters in management of psoriasis with different pathogenic sites, severities, and duration of the disorder...
October 24, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/29063472/effects-of-photobiomodulation-on-experimental-models-of-peripheral-nerve-injury
#15
REVIEW
L Andreo, C B Soldera, B G Ribeiro, P R V de Matos, S K Bussadori, K P S Fernandes, R A Mesquita-Ferrari
Phototherapy has demonstrated positive effects in the treatment of peripheral nerve injury, but there is a need to investigate the dosimetric parameters. Thus, the aim of the present study was to conduct a literature review on the effects of photobiomodulation with the use of low-level laser therapy (LLLT) on the treatment of peripheral nerve injury in experimental models. The databases of PubMed/MEDLINE, SCOPUS, and SPIE Digital Library were searched for articles on the use of LLLT in experimental models of peripheral nerve injury published in English between January 2007 and March 2016...
December 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/29056360/photobiomodulation-therapy-promotes-neurogenesis-by-improving-post-stroke-local-microenvironment-and-stimulating-neuroprogenitor-cells
#16
Luodan Yang, Donovan Tucker, Yan Dong, Chongyun Wu, Yujiao Lu, Yong Li, Juan Zhang, Timon Cheng-Yi Liu, Quanguang Zhang
Recent work has indicated that photobiomodulation (PBM) may beneficially alter the pathological status of several neurological disorders, although the mechanism currently remains unclear. The current study was designed to investigate the beneficial effect of PBM on behavioral deficits and neurogenesis in a photothrombotic (PT) model of ischemic stroke in rats. From day 1 to day 7 after the establishment of PT model, 2-minute daily PBM (CW, 808nm, 350mW/cm(2), total 294J at scalp level) was applied on the infarct injury area (1...
October 19, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/29053051/photobiomodulation-therapy-alleviates-tissue-fibroses-associated-with-chronic-graft-versus-host-disease-two-case-reports-and-putative-anti-fibrotic-roles-of-tgf-%C3%AE
#17
Joel B Epstein, Judith E Raber-Durlacher, Marie-Charlotte Huysmans, Maria C E Schoordijk, Jerry E Cheng, Rene-Jean Bensadoun, Praveen R Arany
OBJECTIVE: Patients who receive allogeneic hematopoietic stem cell transplantation may experience oral complications due to chronic graft-versus-host disease (cGVHD). The manifestations may include progressive sclerosis-like changes that may involve various body sites, including the oropharynx. METHODS AND RESULTS: We present two cGVHD cases of oropharyngeal fibrotic changes that affected functions that were treated with photobiomodulation (PBM) therapy. These case reports suggest that PBM therapy represents an additional, innovative approach affecting discrete phases in cGVHD-associated fibrotic changes...
October 19, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/29037876/photobiomodulation-of-local-alterations-induced-by-bthtx-i-a-phospholipase-a2-myotoxin-from-bothrops-jararacussu-snake-venom-in-vivo-and-in-vitro-evaluation
#18
Adriano Silvio Dos Santos, Ludmila Guimarães-Sousa, Maricilia Silva Costa, Luis Fernando Zamuner, Norma Cristina Sousa, Stephen Hyslop, Andreimar M Soares, Maria Cristina Chavantes, José Carlos Cogo, Stella Regina Zamuner
This report describes the effect of photobiomodulation (PBM) on edema formation, leukocyte influx, prostaglandin E2 (PGE2) biosynthesis and cytotoxicity caused by bothropstoxin-I (BthTX-I), a phospholipase A2 (PLA2) homologue isolated from Bothrops jararacussu snake venom. Swiss mice or C2C12 cells were irradiated with low-level laser (LLL) at 685nm wavelength, an energy density of 4.6J/cm(2) and an irradiation time of 13s. To evaluate the effect on edema formation and leukocyte influx, LLL was applied to the site of inoculation 30min and 3h post-injection...
October 14, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29032938/the-jak-stat-signaling-pathway-and-photobiomodulation-in-chronic-wound-healing
#19
Sandy W Jere, Heidi Abrahamse, Nicolette N Houreld
Wound healing is a physiological process that occurs in overlapping phases namely hemostasis, inflammation, proliferation, and remodeling. Chronic wounds fail to proceed through these reparative processes to achieve the functional integrity within the expected time. Wound healing relies upon growth factors and cytokines for the precise and accurate regulation of cellular responses. These are achieved through the use of complex growth factor/cytokine induced signaling pathways. The Janus kinase/signal transducers and activators of transcription (JAK/STAT) pathway transmits extracellular signals to the nucleus for the transcription of genes involved in proliferation and differentiation, to name but a few...
October 6, 2017: Cytokine & Growth Factor Reviews
https://www.readbyqxmd.com/read/29024528/photobiomodulation-alters-matrix-protein-activity-in-stressed-fibroblast-cells-in-vitro
#20
S M Ayuk, H Abrahamse, N N Houreld
A balance is maintained between matrix synthesis and degradation, and a prolonged increase in matrix metalloproteinases (MMPs) affects healing. Photobiomodulation (PBM) speeds up healing and alters wound environment. The study aimed to determine changes in protein and gene expression of collagen type 1 (Col-I), MMP-3 and -9 and TIMP-1 in fibroblasts irradiated at 660 or 830 nm. Commercially purchased human skin fibroblast cells were modeled into five groups: namely, normal, normal wounded, diabetic wounded, hypoxic wounded and diabetic hypoxic wounded...
October 12, 2017: Journal of Biophotonics
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