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https://www.readbyqxmd.com/read/28441605/biological-effects-and-medical-applications-of-infrared-radiation
#1
Shang-Ru Tsai, Michael R Hamblin
Infrared (IR) radiation is electromagnetic radiation with wavelengths between 760nm and 100,000nm. Low-level light therapy (LLLT) or photobiomodulation (PBM) therapy generally employs light at red and near-infrared wavelengths (600-100nm) to modulate biological activity. Many factors, conditions, and parameters influence the therapeutic effects of IR, including fluence, irradiance, treatment timing and repetition, pulsing, and wavelength. Increasing evidence suggests that IR can carry out photostimulation and photobiomodulation effects particularly benefiting neural stimulation, wound healing, and cancer treatment...
April 13, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28436746/penetration-time-profiles-for-two-class-3b-lasers-in-in-situ-human-achilles-at-rest-and-stretched
#2
Daniel Huseby Bordvik, Sturla Haslerud, Ingvill Fjell Naterstad, Rodrigo Alvaro Brandão Lopes-Martins, Ernesto Cesar Pinto Leal Junior, Jan Magnus Bjordal, Jon Joensen
BACKGROUND AND OBJECTIVE: The majority of studies investigating penetration of laser light are performed in vitro on skin flaps, with measures of immediate penetration depth and energy loss. The aim of this study was to investigate the penetration time profiles for two different lasers used in low-level laser therapy, during 150 sec of exposure both in stretched and relaxed human Achilles in situ. MATERIALS AND METHODS: Thirty-four Achilles tendons from 17 healthy volunteers were irradiated by an 810 nm, 200 mW, continuous- and a 904 nm, 60 mW, super-pulsed laser...
April 21, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28433688/vitamin-d-downregulates-the-il-23-receptor-pathway-in-human-mucosal-ilc3
#3
Viktoria Konya, Paulo Czarnewski, Marianne Forkel, Anna Rao, Efthymia Kokkinou, Eduardo J Villablanca, Sven Almer, Ulrik Lindforss, Danielle Friberg, Charlotte Höög, Peter Bergman, Jenny Mjösberg
BACKGROUND: Vitamin D deficiency is a risk factor for inflammatory bowel disease (IBD). The IL-23-driven tissue-resident ILC3 play essential roles in intestinal immunity, and targeting IL-23/12 is a promising approach in IBD therapy. OBJECTIVE: We set out to define the role of 1α,25-dihydroxy vitamin D3 (1,25D) in regulating functional responses of human mucosal ILC3 to IL-23 plus IL-1β stimulation. METHODS: Transcriptomes of sorted tonsil ILC3 were assessed by microarray analysis...
April 19, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28424574/present-molecular-limitations-of-on-bipolar-cell-targeted-gene-therapy
#4
Michiel van Wyk, Elmar C Hulliger, Lara Girod, Andreas Ebneter, Sonja Kleinlogel
Recent studies have demonstrated the safety and efficacy of ocular gene therapy based on adeno-associated viral vectors (AAVs). Accordingly, a surge in promising new gene therapies is entering clinical trials, including the first optogenetic therapy for vision restoration. To date, optogenetic therapies for vision restoration target either the retinal ganglion cells (GCs) or presynaptic ON-bipolar cells (OBCs). Initiating light responses at the level of the OBCs has significant advantages over optogenetic activation of GCs...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28423634/early-assessment-of-tumor-response-to-photodynamic-therapy-using-combined-diffuse-optical-and-diffuse-correlation-spectroscopy-to-predict-treatment-outcome
#5
Patricia Thong, Kijoon Lee, Hui-Jin Toh, Jing Dong, Chuan-Sia Tee, Kar-Perng Low, Pui-Haan Chang, Ramaswamy Bhuvaneswari, Ngian-Chye Tan, Khee-Chee Soo
Photodynamic therapy (PDT) of cancer involves the use of a photosensitizer that can be light-activated to eradicate tumors via direct cytotoxicity, damage to tumor vasculature and stimulating the body's immune system. Treatment outcome may vary between individuals even under the same regime; therefore a non-invasive tumor response monitoring system will be useful for personalization of the treatment protocol. We present the combined use of diffuse optical spectroscopy (DOS) and diffuse correlation spectroscopy (DCS) to provide early assessment of tumor response...
March 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/28396101/the-effectiveness-of-treatments-for-androgenetic-alopecia-a-systematic-review-and-meta-analysis
#6
REVIEW
Areej Adil, Marshall Godwin
BACKGROUND: Androgenetic alopecia, or male pattern hair loss, is a hair loss disorder mediated by dihydrotestosterone, the potent form of testosterone. Currently, minoxidil and finasteride are Food and Drug Administration (FDA)-approved, and HairMax LaserComb, which is FDA-cleared, are the only treatments recognized by the FDA as treatments of androgenetic alopecia. OBJECTIVE: This systematic review and meta-analysis assesses the efficacy of nonsurgical treatments of androgenetic alopecia in comparison to placebo for improving hair density, thickness, growth (defined by an increased anagen:telogen ratio), or subjective global assessments done by patients and investigators...
April 7, 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28392641/low-level-light-therapy-with-410-nm-light-emitting-diode-suppresses-collagen-synthesis-in-human-keloid-fibroblasts-an-in-vitro-study
#7
Hyun Soo Lee, Soo-Eun Jung, Sue Kyung Kim, You-Sun Kim, Seonghyang Sohn, You Chan Kim
BACKGROUND: Keloids are characterized by excessive collagen deposition in the dermis, in which transforming growth factor β (TGF-β)/Smad signaling plays an important role. Low-level light therapy (LLLT) is reported as effective in preventing keloids in clinical reports, recently. To date, studies investigating the effect of LLLT on keloid fibroblasts are extremely rare. OBJECTIVE: We investigated the effect of LLLT with blue (410 nm), red (630 nm), and infrared (830 nm) light on the collagen synthesis in keloid fibroblasts...
April 2017: Annals of Dermatology
https://www.readbyqxmd.com/read/28385173/novel-augmentation-strategies-in-major-depression
#8
Klaus Martiny
Hypothesis The hypotheses of all the four included studies share the common idea that it is possible to augment the effect of antidepressant drug treatment by applying different interventions and with each intervention attain a clinically meaningful better effect compared to a control condition, and with minor side effects, thus improving the short- and medium-term outcome in major depression. Procedures Study design The basic study design has been the double blind randomised controlled trial (RCT). In the light therapy study, all patients were treated with sertraline for the whole of the study duration...
April 2017: Danish Medical Journal
https://www.readbyqxmd.com/read/28365423/evaluation-of-theranostic-nanocarriers-for-near-infrared-imaging-and-photodynamic-therapy-on-human-prostate-cancer-cells
#9
Fernanda Z Leandro, Júlia Martins, Aparecida M Fontes, Antonio C Tedesco
This paper evaluates how effectively chloroaluminum phthalocyanine (ClAlPc) entrapped in colloidal nanocarriers, such as nanocapsule (NC) and nanoemulsion (NE), induces photodamage in human prostate cancer cells (LNCaP) during photodynamic therapy (PDT). The MTT cell viability assay showed that both ClAlPc-NC and ClAlPc-NE induced phototoxicity and efficiently killed LNCaP cells at low ClAlPc-NC and ClAlPc-NE concentrations (0.3μgmL(-1)) as well as under low light doses of 4Jcm(-2) and 7Jcm(-2), respectively, upon PDT with a 670-nm diode laser line...
March 21, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28352491/acquired-factor-viii-deficiency-two-case-reports-and-a-review-of-literature
#10
Lan Mo, George C Bao
BACKGROUND: Acquired factor VIII (FVIII) deficiency, or acquired hemophilia A (AHA), is a rare autoimmune disorder involving antibody-mediated depletion of coagulation FVIII, leading to severe, life-threatening bleeding. The condition is often associated with other autoimmune disorders, and its treatment involves replacement of FVIII and various modes of immunosuppression. Recently, a few noteworthy therapeutic advances have been made. We present two cases of severe AHA in Chinese women...
2017: Experimental Hematology & Oncology
https://www.readbyqxmd.com/read/28349897/3d-printing-scaffold-coupled-with-low-level-light-therapy-for-neural-tissue-regeneration
#11
Wei Zhu, Jonathan K George, Volker J Sorger, Lijie Grace Zhang
3D printing has shown promise for neural regeneration by providing customized nerve scaffolds to structurally support and bridge the defect gap as well as deliver cells or various bioactive substances. Low-level light therapy (LLLT) exhibits positive effects on rehabiliation of degenerative nerves and neural disorders. With this in mind, we postulate that 3D printed neural scaffold coupling with LLLT will generate a new strategy to repair neural degeneration. To achieve this goal, we applied red laser light to stimualte neural stem cells on 3D printed scaffolds and investigated the subsequent cell response with respect to cell proliferation and differentiation...
April 12, 2017: Biofabrication
https://www.readbyqxmd.com/read/28347821/pretreatment-with-light-emitting-diode-therapy-reduces-ischemic-brain-injury-in-mice-through-endothelial-nitric-oxide-synthase-dependent-mechanisms
#12
Hae In Lee, Sae-Won Lee, So Young Kim, Nam Gyun Kim, Kyoung-Jun Park, Byung Tae Choi, Yong-Il Shin, Hwa Kyoung Shin
Photostimulation with low-level light emitting diode therapy (LED-T) modulates neurological and psychological functions. The purpose of this study was to evaluate the effects of LED-T pretreatment on the mouse brain after ischemia/reperfusion and to investigate the underlying mechanisms. Ischemia/reperfusion brain injury was induced by middle cerebral artery occlusion. The mice received LED-T twice a day for 2 days prior to cerebral ischemia. After reperfusion, the LED-T group showed significantly smaller infarct and edema volumes, fewer behavioral deficits compared to injured mice that did not receive LED-T and significantly higher cerebral blood flow compared to the vehicle group...
May 13, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28346400/t-lymphocyte-homing-an-underappreciated-yet-critical-hurdle-for-successful-cancer-immunotherapy
#13
Robert Sackstein, Tobias Schatton, Steven R Barthel
Advances in cancer immunotherapy have offered new hope for patients with metastatic disease. This unfolding success story has been exemplified by a growing arsenal of novel immunotherapeutics, including blocking antibodies targeting immune checkpoint pathways, cancer vaccines, and adoptive cell therapy (ACT). Nonetheless, clinical benefit remains highly variable and patient-specific, in part, because all immunotherapeutic regimens vitally hinge on the capacity of endogenous and/or adoptively transferred T-effector (Teff) cells, including chimeric antigen receptor (CAR) T cells, to home efficiently into tumor target tissue...
March 27, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28342007/the-effect-of-led-on-blood-microcirculation-during-chronic-wound-healing-in-diabetic-and-non-diabetic-patients-a-prospective-double-blind-randomized-study
#14
Igor Frangez, Ksenija Cankar, Helena Ban Frangez, Dragica Maja Smrke
Chronic wounds, especially in diabetic patients, represent a challenging health issue. Since standard treatment protocols often do not provide satisfactory results, additional treatment methods-like phototherapy using low-level light therapy-are being investigated. The aim of our study was to evaluate the effect of phototherapy with light-emitting diodes on chronic wound treatment in diabetic and non-diabetic patients. Since a sufficient blood supply is mandatory for wound healing, the evaluation of microcirculation in the healthy skin at a wound's edge was the main outcome measure...
March 25, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28333866/prevention-of-gastrointestinal-side-effects-in-paediatric-oncology-what-are-the-guidelines
#15
Karis K F Cheng
PURPOSE OF REVIEW: Gastrointestinal side-effects, particularly with regard to alimentary tract mucositis and chemotherapy-induced nausea and vomiting (CINV), continue to be frequent and debilitating symptomatic conditions among children and adolescents receiving cytotoxic cancer therapy. Further avenues of progress for mucositis and CINV prevention in paediatric oncology setting are warranted. RECENT FINDINGS: The current article reviews the major guidelines and literature published in 2016 pertaining to the prevention of mucositis and CINV...
March 22, 2017: Current Opinion in Supportive and Palliative Care
https://www.readbyqxmd.com/read/28328705/novel-approach-to-treating-androgenetic-alopecia-in-females-with-photobiomodulation-low-level-laser-therapy
#16
Shelly Friedman, Patricia Schnoor
BACKGROUND: Photobiomodulation, also referred to as low-level laser therapy (LLLT), has been studied and used for (among other diseases) the promotion of hair regrowth. OBJECTIVE/MATERIALS AND METHODS/RESULTS: A clinical study was developed to define the physiologic effects that occur when the human hair follicle and surrounding tissue structures are exposed to laser light using a novel device that is fitted with an array of laser diode sources operating at 650 nm and placed inside a sports cap to promote discretion while in use...
March 21, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28297725/rearing-light-intensity-affects-inner-retinal-pathology-in-a-mouse-model-of-x-linked-retinoschisis-but-does-not-alter-gene-therapy-outcome
#17
Dario Marangoni, Zeng Yong, Sten Kjellström, Camasamudram Vijayasarathy, Paul A Sieving, Ronald A Bush
Purpose: To test the effects of rearing light intensity on retinal function and morphology in the retinoschisis knockout (Rs1-KO) mouse model of X-linked retinoschisis, and whether it affects functional outcome of RS1 gene replacement. Methods: Seventy-six Rs1-KO mice were reared in either cyclic low light (LL, 20 lux) or moderate light (ML, 300 lux) and analyzed at 1 and 4 months. Retinal function was assessed by electroretinogram and cavity size by optical coherence tomography...
March 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28294706/histopathological-microbiological-and-radiographic-analysis-of-antimicrobial-photodynamic-therapy-for-the-treatment-of-teeth-with-apical-periodontitis-a-study-in-rats-molars
#18
Alessandra Cesar Trindade, José Antônio Poli de Figueiredo, Sílvia Dias de Oliveira, Valdir Cristóvão Barth Junior, Stephanie Wagner Gallo, Carina Follmann, Carlos Frederico Brilhante Wolle, Liviu Steier, Renata Dornelles Morgental, João Batista Blessmann Weber
OBJECTIVE: The aim of this study was to evaluate in vivo, by histological and radiographic analysis, the response of apical tissues of rats' teeth with experimentally induced apical periodontitis, after one- and two-session endodontic treatment with and without photodynamic therapy (PDT). A microbiological analysis was also performed to verify bacterial reduction after each treatment. BACKGROUND DATA: Studies carried out in recent years highlighted the antibacterial potential of PDT when associated with conventional endodontic therapy in vitro...
March 9, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28265648/effect-of-low-level-light-therapy-on-diabetic-foot-ulcers-a-near-infrared-spectroscopy-study
#19
Massimo Salvi, Daniele Rimini, Filippo Molinari, Gianni Bestente, Alberto Bruno
No abstract text is available yet for this article.
March 1, 2017: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/28215833/effects-of-platelet-rich-plasma-against-experimental-ischemia-reperfusion-injury-in-rat-testis
#20
C A Sekerci, Y Tanidir, T E Sener, G Sener, O Cevik, A Yarat, B Alev-Tuzuner, S Cetinel, E Kervancioglu, A Sahan, C Akbal
BACKGROUND: Testicular torsion is a common problem and, to date, there is no agent to preserve testicular function following detorsion. Platelet-rich plasma (PRP), with its rich growth factor composition, has proven beneficial in regenerative therapy. It is believed that PRP has not been studied in testis for ischemia/reperfusion (I/R) injury. OBJECTIVE: This study investigated the effect of PRP in an I/R rat model 1 month after detorsion. STUDY DESIGN: Of 24 adult male Sprague-Dawley rats, 18 were randomly assigned into three groups, with six in each: control, I/R and I/R + PRP...
January 23, 2017: Journal of Pediatric Urology
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