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Low level light therapy

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https://www.readbyqxmd.com/read/28075022/the-mechanistic-basis-for-photobiomodulation-therapy-of-neuropathic-pain-by-near-infrared-laser-light
#1
Vanessa Milanesi Holanda, Maria Cristina Chavantes, Xingjia Wu, Juanita J Anders
BACKGROUND AND OBJECTIVE: Various irradiances have been reported to be beneficial for the treatment of neuropathic pain with near infrared light. However, the mechanistic basis for the beneficial outcomes may vary based on the level of irradiance or fluence rate used. Using in vivo and in vitro experimental models, this study determined the mechanistic basis of photobiomodulation therapy (PBMT) for the treatment of neuropathic pain using a high irradiance. STUDY DESIGN/MATERIALS AND METHODS: In vitro experiments: Cultured, rat DRG were randomly assigned to control or laser treatment (LT) groups with different irradiation times (2, 5, 30, 60, or 120 seconds)...
January 11, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/28070154/proposed-mechanisms-of-photobiomodulation-or-low-level-light-therapy
#2
Lucas Freitas de Freitas, Michael R Hamblin
Photobiomodulation (PBM) also known as low-level laser (or light) therapy (LLLT), has been known for almost 50 years but still has not gained widespread acceptance, largely due to uncertainty about the molecular, cellular, and tissular mechanisms of action. However, in recent years, much knowledge has been gained in this area, which will be summarized in this review. One of the most important chromophores is cytochrome c oxidase (unit IV in the mitochondrial respiratory chain), which contains both heme and copper centers and absorbs light into the near-infra-red region...
May 2016: IEEE Journal of Selected Topics in Quantum Electronics
https://www.readbyqxmd.com/read/28047366/su-f-j-64-comparison-of-dosimetric-robustness-between-proton-therapy-and-imrt-plans-following-tumor-regression-for-locally-advanced-non-small-cell-lung-cancer-nsclc
#3
C Teng, C Ainsley, B Teo, B Burgdorf, G Janssens, A Berman, W Levin, Y Xiao, L Lin, C Simone, T Solberg
PURPOSE: In the light of tumor regression and normal tissue changes, dose distributions can deviate undesirably from what was planned. As a consequence, replanning is sometimes necessary during treatment to ensure continued tumor coverage or to avoid overdosing organs at risk (OARs). Proton plans are generally thought to be less robust than photon plans because of the proton beam's higher sensitivity to changes in tissue composition, suggesting also a higher likely replanning rate due to tumor regression...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28001759/transcranial-low-level-laser-light-therapy-for-brain-injury
#4
Connor Thunshelle, Michael R Hamblin
BACKGROUND: Low-level laser therapy (LLLT) or photobiomodulation (PBM) is a possible treatment for brain injury, including traumatic brain injury (TBI). METHODS: We review the fundamental mechanisms at the cellular and molecular level and the effects on the brain are discussed. There are several contributing processes that have been proposed to lead to the beneficial effects of PBM in treating TBI such as stimulation of neurogenesis, a decrease in inflammation, and neuroprotection...
December 2016: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/27942989/efficacy-of-femtosecond-lasers-for-application-of-acupuncture-therapy
#5
Mika Ohta, Yoichiroh Hosokawa, Naoya Hatano, Aki Sugano, Akihiko Ito, Yutaka Takaoka
Acupuncture treatment utilizes the stimulation of metal acupuncture needles that are manually inserted into a living body. In the last decades, laser light has been used as an alternative to needles to stimulate acupuncture points. We previously reported suppression of myostatin (Mstn) gene expression in skeletal muscle by means of femtosecond laser (FL) irradiation, after electroacupuncture, in which acupuncture needles are stimulated with a low-frequency microcurrent. The purpose of the study here was to investigate the efficacy of FL irradiation in mouse skeletal muscle with regard to protein synthesis...
December 10, 2016: Lasers in Medical Science
https://www.readbyqxmd.com/read/27941575/prediction-of-opioid-analgesic-efficacy-by-measurement-of-pupillary-unrest
#6
Andrew E Neice, Matthias Behrends, Michael P Bokoch, Katherine M Seligman, Nicole M Conrad, Merlin D Larson
BACKGROUND: Pupillary unrest under ambient light (PUAL) is the fluctuation in pupil diameter in time around a mean value. PUAL is augmented by light and diminished by administration of opioids. We hypothesized that, because pupillary unrest is a marker of opioid effect, low levels of PUAL may be associated with reduced opioid efficacy, as measured by changes in the numerical rating scale (NRS) pain scores of patients in the postanesthesia care unit (PACU). METHODS: We used an infrared pupillometer to measure PUAL in patients recovering from ambulatory surgery at 2 different institutions...
December 8, 2016: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/27941283/efficacy-of-pomalidomide-in-a-multiple-myeloma-patient-requiring-hemodialysis
#7
Michiko Kida, Masako Hirao, Hiromitsu Iizuka, Akira Hangaishi, Kensuke Usuki
A 67-year-old male patient developed multiple myeloma with acute renal failure caused by myeloma kidney. Although a very good partial response was achieved with bortezomib with dexamethasone (BD) therapy under temporary dialysis, relapse occurred 3 years later. Thalidomide was added to the BD therapy but was discontinued because of drug-induced eczema. Subsequently, bone lesions and chromosomal abnormalities appeared. Because renal failure progressed with increased serum free light chain levels, maintenance hemodialysis was introduced...
2016: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/27925481/mitochondrial-ros-uncoupled-from-atp-synthesis-determine-endothelial-activation-for-both-physiological-recruitment-of-patrolling-cells-and-pathological-recruitment-of-inflammatory-cells
#8
Xinyuan Li, Pu Fang, William Y Yang, Kylie Chan, Muriel Lavallee, Keman Xu, Tracy Gao, Hong Wang, Xiaofeng Yang
Mitochondrial reactive oxygen species (mtROS) are signaling molecules, which drive inflammatory cytokine production and T cell activation. In addition, cardiovascular diseases, cancers, and autoimmune diseases all share a common feature of increased mtROS level. Both mtROS and ATP are produced as a result of electron transport chain activity, but it remains enigmatic whether mtROS could be generated independently from ATP synthesis. A recent study shed light on this important question and found that, during endothelial cell (EC) activation, mtROS could be upregulated in a proton leak-coupled, but ATP synthesis-uncoupled manner...
November 5, 2016: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/27921413/short-time-efficiency-of-rhinophototherapy-in-management-of-patients-with-allergic-rhinitis-resistant-to-medical-therapy
#9
Soheila Alyasin, Seyed Hesamedin Nabavizadeh, Hamidreza Houshmand, Hossein Esmaeilzadeh, Sina Jelodar, Reza Amin
Allergic rhinitis is one of the most common health problems with a major effect on the quality of life. We intended to treat Allergic Rhinitis (AR) in patients who are either unresponsive to antihistamines or their job requires optimal alertness that may be disturbed by antihistamine's side effects and those who do not comply with the regular use. We tried short term phototherapy and evaluated its effect on AR. As phototherapy is effective in the treatment of atopic dermatitis (AD) and the same allergens can produce both AD and AR, phototherapy is proposed as a new tool in the AR treatment...
August 2016: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/27911934/efficacy-of-noninvasive-stellate-ganglion-blockade-performed-using-physical-agent-modalities-in-patients-with-sympathetic-hyperactivity-associated-disorders-a-systematic-review-and-meta-analysis
#10
Chun-De Liao, Jau-Yih Tsauo, Tsan-Hon Liou, Hung-Chou Chen, Chi-Lun Rau
BACKGROUND: Stellate ganglion blockade (SGB) is mainly used to relieve symptoms of neuropathic pain in conditions such as complex regional pain syndrome and has several potential complications. Noninvasive SGB performed using physical agent modalities (PAMs), such as light irradiation and electrical stimulation, can be clinically used as an alternative to conventional invasive SGB. However, its application protocols vary and its clinical efficacy remains controversial. This study investigated the use of noninvasive SGB for managing neuropathic pain or other disorders associated with sympathetic hyperactivity...
2016: PloS One
https://www.readbyqxmd.com/read/27911334/matrix-metalloproteinases-and-tissue-inhibitor-of-metalloproteinases-in%C3%A2-inflammation-and-fibrosis-of-skeletal-muscles
#11
Hala S Alameddine, Jennifer E Morgan
In skeletal muscles, levels and activity of Matrix MetalloProteinases (MMPs) and Tissue Inhibitors of MetalloProteinases (TIMPs) have been involved in myoblast migration, fusion and various physiological and pathological remodeling situations including neuromuscular diseases. This has opened perspectives for the use of MMPs' overexpression to improve the efficiency of cell therapy in muscular dystrophies and resolve fibrosis. Alternatively, inhibition of individual MMPs in animal models of muscular dystrophies has provided evidence of beneficial, dual or adverse effects on muscle morphology or function...
November 29, 2016: Journal of Neuromuscular Diseases
https://www.readbyqxmd.com/read/27909917/strength-training-prior-to-muscle-injury-potentiates-low-level-laser-therapy-lllt-induced-muscle-regeneration
#12
Samuel Rodrigues Lourenço Morais, Alexandre Ginei Goya, Úrsula Urias, Paulo Roberto Jannig, Aline Villa Nova Bacurau, Wagner Garcez Mello, Paula Lazilha Faleiros, Sandra Helena Penha Oliveira, Valdir Gouveia Garcia, Edilson Ervolino, Patricia Chakur Brum, Rita Cássia Menegati Dornelles
We evaluated whether strength training (ST) performed prior to skeletal muscle cryolesion would act as a preconditioning, improving skeletal muscle regeneration and responsiveness to low-level laser therapy (LLLT). Wistar rats were randomly assigned into non-exercised (NE), NE plus muscle lesion (NE + LE), NE + LE plus LLLT (NE + LE + LLLT), strength training (ST), ST + LE, and ST + LE + LLLT. The animals performed 10 weeks of ST (climbing ladder; 3× week; 80% overload). Forty-eight hours after the last ST session, tibialis anterior (TA) cryolesion was induced and LLLT (InGaAlP, 660 nm, 0...
December 1, 2016: Lasers in Medical Science
https://www.readbyqxmd.com/read/27898280/what-defense-mechanisms-do-therapists-interpret-in-session
#13
Maneet Bhatia, Jonathan Petraglia, Yves de Roten, Elisabeth Banon, Jean-Nicolas Despland, Martin Drapeau
One of the key technical guidelines outlined by psychodynamic theorists and clinicians is for therapists to interpret a patient's most prominent defenses (Greenson, 1967; Langs, 1973). However, a debate exists about what constitutes a patient's most prominent defense and which defenses therapists actually choose to interpret in-session. This study aimed to shed light on this debate by examining 35 psychotherapy sessions (18 high alliance and 17 low alliance dyads) of individuals in therapy at a university counselling center...
2016: Psychodynamic Psychiatry
https://www.readbyqxmd.com/read/27898256/comparative-study-of-the-physiotherapeutic-and-drug-protocol-and-low-level-laser-irradiation-in-the-treatment-of-pain-associated-with-temporomandibular-dysfunction
#14
Marcos Fernando Xisto Braga Cavalcanti, Uoston Holder Silva, Ernesto Cesar Pinto Leal-Junior, Rodrigo A B Lopes-Martins, Rodrigo Labat Marcos, Rodney Capp Pallotta, Francesca Diomede, Oriana Trubiani, Natalia De Isla, Lucio Frigo
BACKGROUND: The temporomandibular joint (TMJ) is a structure of the craniofacial complex affected by neurological diseases. Orthopedic and musculoskeletal changes can also cause temporomandibular disorders (TMD) and pain. Low-level laser (LLL) therapy has been studied in the treatment of temporomandibular jaw (TMJ) dysfunction, and controversial results were obtained. OBJECTIVE: The objective of this work was comparing the physiotherapeutic and drug protocol (PDP) to LLL therapy in the treatment of pain associated with TMD...
December 2016: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/27895461/sildenafil-potentiates-the-antitumor-activity-of-cisplatin-by-induction-of-apoptosis-and-inhibition-of-proliferation-and-angiogenesis
#15
Mona Mohamed El-Naa, Mohamed Othman, Sheren Younes
Sildenafil is the first phosphodiesterase-5 inhibitor used for the treatment of erectile dysfunction. However, recent studies have been suggesting an antitumor effect of sildenafil. The current study assessed the aforementioned activity of sildenafil in vivo and in vitro in solid-tumor-bearing mice and in a human cell line MCF-7, respectively. Moreover, we investigated the impact of sildenafil on cisplatin antitumor activity. The solid tumor was induced by inoculation of Ehrlich ascites carcinoma cells in female mice...
2016: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/27874039/effects-of-light-emitting-diode-irradiation-on-the-osteogenesis-of-human-umbilical-cord-mesenchymal-stem-cells-in-vitro
#16
Dazhi Yang, Weihong Yi, Ertian Wang, Min Wang
The aim of this study was to examine the effects of light-emitting diode (LED) photobiomodulation therapy on the proliferation and differentiation of human umbilical cord mesenchymal stem cells (hUMSCs) cultured in osteogenic differentiation medium. HUMSCs were irradiated with an LED light at 620 nm and 2 J/cm(2) and monitored for cell proliferation and osteogenic differentiation activity. The experiment involved four groups of cells: the control group; the osteogenic group (osteo group); the LED group; the osteogenic + LED group (LED + osteo group)...
November 22, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27861614/photobiomodulation-with-pulsed-and-continuous-wave-near-infrared-laser-810-nm-al-ga-as-augments-dermal-wound-healing-in-immunosuppressed-rats
#17
Gaurav K Keshri, Asheesh Gupta, Anju Yadav, Sanjeev K Sharma, Shashi Bala Singh
Chronic non-healing cutaneous wounds are often vulnerable in one or more repair phases that prevent normal healing and pose challenges to the use of conventional wound care modalities. In immunosuppressed subject, the sequential stages of healing get hampered, which may be the consequences of dysregulated or stagnant wound inflammation. Photobiomodulation (PBM) or low-level laser (light) therapy (LLLT) emerges as a promising drug-free, non-invasive biophysical approach for promoting wound healing, reduction of inflammation, pain and restoration of functions...
2016: PloS One
https://www.readbyqxmd.com/read/27827890/in-vitro-photodynamic-effect-of-phycocyanin-against-breast-cancer-cells
#18
Subramaniyan Bharathiraja, Hansu Seo, Panchanathan Manivasagan, Madhappan Santha Moorthy, Suhyun Park, Jungwan Oh
C-phycocyanin, a natural blue-colored pigment-protein complex was explored as a novel photosensitizer for use in low-level laser therapy under 625-nm laser illumination. C-phycocyanin produced singlet oxygen radicals and the level of reactive oxygen species (ROS) were raised in extended time of treatment. It did not exhibit any visible toxic effect in the absence of light. Under 625-nm laser irradiation, c-phycocyanin generated cytotoxic stress through ROS induction, which killed MDA-MB-231 breast cancer cells depending on concentrations...
November 3, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27821114/bright-light-therapy-in-pregnant-women-with-major-depressive-disorder-study-protocol-for-a-randomized-double-blind-controlled-clinical-trial
#19
Babette Bais, Astrid M Kamperman, Marjolein D van der Zwaag, Gwen C Dieleman, Hanneke W Harmsen van der Vliet-Torij, Hilmar H Bijma, Ritsaert Lieverse, Witte J G Hoogendijk, Mijke P Lambregtse-van den Berg
BACKGROUND: Depression during pregnancy is a common and high impact disease. Generally, 5-10 % of pregnant women suffer from depression. Children who have been exposed to maternal depression during pregnancy have a higher risk of adverse birth outcomes and more often show cognitive, emotional and behavioural problems. Therefore, early detection and treatment of antepartum depression is necessary. Both psychotherapy and antidepressant medication, first choice treatments in a non-pregnant population, have limitations in treating depression during pregnancy...
November 8, 2016: BMC Psychiatry
https://www.readbyqxmd.com/read/27814854/low-level-light-therapy-and-tattoos-a-case-report
#20
Teresa Ingenito
BACKGROUND AND PURPOSE: Physical therapists (PTs) frequently provide neuromusculoskeletal treatment for patients who incidentally may have one or more tattoos. Low level light therapy (LLLT) is one of the modalities commonly used by physical therapists to decrease pain and facilitate healing. CASE DESCRIPTION: This case report describes a 22 year old man who was given LLLT to address his complaints of musculoskeletal pain. OUTCOMES: Blistering of the skin was documented over the LLLT application site, a black tattoo...
October 2016: Journal of Bodywork and Movement Therapies
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