scholarly journals Light-tissue interactions of low level laser to support the chronic hepatitis patients

10.29007/qnmf ◽  
2022 ◽  
Author(s):  
Thien Hau Tran ◽  
Minh Thai Tran ◽  
Thi Ngoc Dung Tran ◽  
Thi Thien Hoa Ngo
Keyword(s):  
Chronic Hepatitis ◽  
Semiconductor Laser ◽  
Laser Therapy ◽  
Statistical Significance ◽  
Subcutaneous Fat ◽  
Low Level Laser Therapy ◽  
Low Level ◽  
Low Level Laser ◽  
Level Laser ◽  
Before And After

In this paper, we present some results obtained from the simulation of low power 633, 780, 850, and 940 nm laser in the liver by Monte Carlo method, with the model of the liver, consisting of 5mm derm, 7mm subcutaneous fat, 5 mm muscle layer. Based on these results, we fabricated devices called “Laser Semiconductor Optoacupuncture and phototherapy Device” using 780 and 940nm semiconductor lasers to treat chronic hepatitis. We combined with the doctor in An Giang province to clinical practice for 50 voluntary patients with chronic hepatitis. We used a 650 nm wavelength intravascular semiconductor laser treatment clinically to provide high-quality blood to the patients’ liver. Treating the phototherapy of the skin with two semiconductor laser beams with 780 nm and 940 nm wavelengths directly affects the liver from the surface of the abdomen. At the moment, we use the treatment on acupoint with 940nm- wavelength laser. A treatment course consists of 20 times for the patients is treated continuously. The patients tested with the ALT and AST before and after treatment with 3 courses. We use the SPSS 23 statistical method to evaluate the outcomes of treatment. The clinical symptoms of the patients such as fatigue, nausea, indigestion, fever, jaundice, yellow eyes almost completely have gone out after treatment. Low-level laser therapy offers a good response in patients with moderate to severe hepatic impairment such as the AST of 56.380 ± 10.162 and 39.260 ± 4.869; The ALT of 56.540 ± 13.580 and 41,360 ± 7,488 for before- and after treatments, respectively. Low-level laser therapy for patients initially has good results, high therapeutic effectiveness, no catastrophic or side Effects, and the statistical significance is p < 0.001.This research applied the ethical principles of the Helsinki Declaration in human researches. The research was carried out using non-invasive methods on humans with the regulations of the University of Technology, Vietnam National University Ho Chi Minh City, and the relevant regulations.

Low-Level Laser Therapy Techniques and Equipment for Occupational Disease Prevention in Precision Workers

2021 ◽  
pp. 78-83
Author(s):  
NYu Mal’kova ◽  
MD Petrova
Keyword(s):  
Spinal Cord ◽  
Laser Radiation ◽  
Laser Therapy ◽  
Blood Circulation ◽  
Low Level Laser Therapy ◽  
Low Level ◽  
Low Level Laser ◽  
Level Laser ◽  
Before And After ◽  
Spinal Cord Disorders

Background: The problem of protecting and maintaining health of workers in the microelectronics industry exposed to adverse occupational factors including tension and overstrain of the muscles of the upper extremities and visual strain, gains special relevance. Objective: Introduction of the developed and patented low-level laser therapy techniques to recover functions of vision and the musculoskeletal system impaired in the course of work. Materials and methods: The study involved 65 chip assemblers aged 26–41 years. Their eyes, the back of the hands, and the collar area were exposed to low-level laser radiation from the red region of the spectrum. All employees were examined by a neurologist and a surgeon and their working conditions were evaluated. The accommodation apparatus was tested using an AKA-01 type accommodation meter. Results: After five 10-minute sessions, we registered an increase in the volume of absolute accommodation during the observation period before and after the work shift by 28 % and 19 %, respectively. On subsequent days of observation, we noted an increase in the accommodation during 10 days, followed by a decrease by the 30th day of observation. Application of preventive techniques helped eliminate spinal cord disorders in all workers. Blood circulation in fingers increased by 66 % compared to the initial condition. Discussion: Low-level laser therapy improves blood supply, intensifies redox processes in the retina of the eye, skin cells, and blood vessels. Conclusions: Low-level laser radiation of the red region of the spectrum relieves the spasm of accommodation and normalizes the efficiency of the accommodation apparatus. Such laser therapy helps eliminate spinal cord disorders and improve blood circulation. Introduction of the developed techniques can prevent occupational diseases and reduce disability in patients.

ROLE OF LOW LEVEL LASER THERAPY IN ORAL MUCOSITIS IN PATIENTS UNDERGOING CONCURRENT CHEMORADIATION

2021 ◽  
pp. 39-41
Author(s):  
Jyoti Mehta ◽  
Janaki MG ◽  
Kirthi Koushik ◽  
Rakesh Rakesh ◽  
Deepak Angamuthu
Keyword(s):  
Laser Therapy ◽  
Oral Mucositis ◽  
Locally Advanced ◽  
Low Level Laser Therapy ◽  
Severe Toxicity ◽  
Low Level ◽  
Low Level Laser ◽  
Treatment Interruptions ◽  
Level Laser ◽  
Before And After

Background: Radiotherapy (RT) has been the traditional treatment approach for head and neck carcinoma (HNC) and has resulted in both excellent control rates and function preservation. Oral mucositis (OM) is a frequent, severe toxicity in patients treated with RT and may lead to hospitalization and the treatment interruptions, which inuences quality of life. The aim of our study is to assess effect of low level laser therapy (LLLT) in the treatment of OM. Materials And Methods: A prospective single arm study was conducted on 23 patients of locally advanced HNC undergoing chemoradiation.Grade 2 mucositis onwards (RTOG grading) were exposed to low LLLT in a scanning motion 3-5 times weekly for 4 weeks Patients were assessed with intra oral photographs and Visual Analogue Score (VAS) questionnaire was used before and after LLLTto assess pain. Results: Eleven patients (47%) received 7 to 10 sessions of LLLT. Fifteen (65%) patients had grade three and seven (30%) had grade 2 before LLLT. Eleven and eight patients had grade 2 and 1 respectively after LLLT (p=0.007). Mean VAS score before and after LLLT was 6.32 and 3.32 respectively (p <0.01) Conclusion:LLLTis an effective intervention in patients with Grade 2 and 3 OM, both in terms of subjective and objective improvement

scholarly journals Low-level laser therapy, at 830 nm, for pain reduction in experimental model of rats with sciatica

2011 ◽  
Vol 69 (2b) ◽  
pp. 356-359 ◽  
Author(s):  
G R F Bertolini ◽  
E L Artifon ◽  
T S Silva ◽  
D M Cunha ◽  
P R Vigo
Keyword(s):  
Laser Therapy ◽  
Pain Reduction ◽  
Low Level Laser Therapy ◽  
Painful Condition ◽  
Low Level ◽  
Low Level Laser ◽  
Level Laser ◽  
Before And After ◽  
Common Clinical Presentation ◽  
The Right

Chronic pain, resulting from nerve compression, is a common clinical presentation. One means of conservative treatment is low-level laser therapy, although controversial. The aim of this study was to evaluate the effects of two doses of low-level laser, at 830 nm, on pain reduction in animals subjected to sciatica. Eighteen rats were used, divided into three groups: GS (n=6), sciatica and simulated treatment; G4J (n=6), sciatica and treatment with 4 J/cm²; and G8J (n=6), sciatica and irradiation with 8 J/cm². The right sciatic nerve was exposed and compressed using catgut thread. Five days of treatment were started on the third postoperative day. Pain was assessed by means of the paw elevation time during gait: before sciatica, before and after the first and second therapies, and the end of the fifth therapy. Low-level laser was effective in reducing the painful condition.

Proinflammatory cytokine levels in saliva in patients with burning mouth syndrome before and after treatment with low-level laser therapy

2012 ◽  
Vol 28 (1) ◽  
pp. 297-301 ◽  
Author(s):  
Sonja Pezelj-Ribarić ◽  
Lumnije Kqiku ◽  
Gordana Brumini ◽  
Miranda Muhvić Urek ◽  
Robert Antonić ◽  
...  
Keyword(s):  
Laser Therapy ◽  
Proinflammatory Cytokine ◽  
Burning Mouth Syndrome ◽  
Low Level Laser Therapy ◽  
Low Level ◽  
Low Level Laser ◽  
Level Laser ◽  
Cytokine Levels ◽  
Before And After ◽  
Burning Mouth

scholarly journals Evaluation the Effect of Low Level Laser on Sensori-neural Hearing Loss

2018 ◽  
Vol 21 (3) ◽  
pp. 384-388
Author(s):  
Anwaar A. Aldergazly ◽  
Hanan Raheem Khlaif
Keyword(s):  
Hearing Loss ◽  
Laser Therapy ◽  
Pure Tone ◽  
Hearing Threshold ◽  
Pure Tone Audiometry ◽  
Low Level Laser Therapy ◽  
Low Level ◽  
Low Level Laser ◽  
Level Laser ◽  
Before And After

Low Level Laser Therapy (LLLT) is one of biotechnology its useful as produced treatment for diseases that were previously difficult to treat. Some studies claim that an improvement in hearing threshold and tinnitus symptoms by Low Level Laser therapy and others set no significant effect of laser treatment. The aim of this project was to evaluation effect of low level laser (LLLT) treatment on senserinurail hearing loss. The study including 16 patients divided into two groups each group consists of 8patients (first group consist of 14 ear and second group consist of 16 ears), and each group has λ=650nm+532nm and 2.78mW/cm2. The result of this project found statistically significant differences in each group ( before and after laser application) as well as a significant change in the threshold of pure tone audiometry for patients having hearing degree (40-75)dB in each group.

scholarly journals Evaluation of low level laser and interferential current in the therapy of complex regional pain syndrome by infrared thermographic camera

2010 ◽  
Vol 67 (9) ◽  
pp. 755-760 ◽  
Author(s):  
Mirjana Kocic ◽  
Milica Lazovic ◽  
Irena Dimitrijevic ◽  
Dragan Mancic ◽  
Anita Stankovic
Keyword(s):  
Laser Therapy ◽  
Pain Syndrome ◽  
Low Level Laser Therapy ◽  
Low Level ◽  
Low Level Laser ◽  
Level Laser ◽  
Before And After ◽  
Interferential Current ◽  
Group A ◽  
Group B

Background/Aim. Complex regional pain syndrome type I (CRPS I) is characterized by continuous regional pain, disproportional according to duration and intensity and to the sort of trauma or other lesion it was caused by. The aim of the study was to evaluate and compare, by using thermovison, the effects of low level laser therapy and therapy with interferential current in treatment of CRPS I. Methods. The prospective randomized controlled clinical study included 45 patients with unilateral CRPS I, after a fracture of the distal end of the radius, of the tibia and/or the fibula, treated in the Clinical Centre in Nis from 2004 to 2007. The group A consisted of 20 patients treated by low level laser therapy and kinesy-therapy, while the patients in the group B (n = 25) were treated by interferential current and kinesy-therapy. The regions of interest were filmed by a thermovision camera on both sides, before and after the 20 therapeutic procedures had been applied. Afterwards, the quantitative analysis and the comparing of thermograms taken before and after the applied therapy were performed. Results. There was statistically significant decrease of the mean maximum temperature difference between the injured and the contralateral extremity after the therapy in comparison to the status before the therapy, with the patients of the group A (p < 0.001) as well as those of the group B (p < 0.001). The decrease was statistically significantly higher in the group A than in the group B (p < 0.05). Conclusions. By the use of the infrared thermovision we showed that in the treatment of CRPS I both physical medicine methods were effective, but the effectiveness of laser therapy was statistically significantly higher compared to that of the interferential current therapy.

Cytomorphometric and clinical investigation of the gingiva before and after low-level laser therapy of gingivitis in children

2011 ◽  
Vol 27 (4) ◽  
pp. 843-848 ◽  
Author(s):  
Marija Igic ◽  
Dragan Mihailovic ◽  
Ljiljana Kesic ◽  
Jelena Milasin ◽  
Mirjana Apostolovic ◽  
...  
Keyword(s):  
Laser Therapy ◽  
Clinical Investigation ◽  
Low Level Laser Therapy ◽  
Low Level ◽  
Low Level Laser ◽  
Level Laser ◽  
Before And After

scholarly journals The influence of low-level laser therapy on biomodulation of collagen and elastic fibers

2003 ◽  
Vol 17 (4) ◽  
pp. 307-313 ◽  
Author(s):  
Lívia Souza Pugliese ◽  
Alena Peixoto Medrado ◽  
Sílvia Regina de Almeida Reis ◽  
Zilton de Araújo Andrade
Keyword(s):  
Wound Healing ◽  
Laser Therapy ◽  
Statistical Significance ◽  
Healing Process ◽  
Low Level Laser Therapy ◽  
Elastic Fibers ◽  
Wound Healing Process ◽  
Low Level ◽  
Low Level Laser ◽  
Level Laser

The study of low-level laser therapy upon extracellular matrix elements is important to understand the wound healing process under this agent. However, little is known about the interference of laser light in relation to collagen and elastic fibers. Cutaneous wounds were performed on the back of 72 Wistar rats and a Ga-Al-As low-level laser was punctually applied with different energy densities. The animals were killed after 24, 48, 72 hours and 5, 7 and 14 days. Tissues were stained with hematoxilin-eosin, sirius red fast green and orcein and then analyzed. It was observed that the treated group exhibited larger reduction of edema and inflammatory infiltrate. The treated animals presented a larger expression of collagen and elastic fibers, although without statistical significance (p > 0.05). Treatment with a dosage of 4 J/cm² exhibited more expressive results than that with 8 J/cm². In this study, the authors concluded that low-level laser therapy contributed to a larger expression of collagen and elastic fibers during the early phases of the wound healing process.

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