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Lasers in Medical Science

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https://www.readbyqxmd.com/read/29349512/photobiomodulation-induces-in-vitro-re-epithelialization-via-nitric-oxide-production
#1
Manuela Rizzi, Mario Migliario, Stelvio Tonello, Vincenzo Rocchetti, Filippo Renò
Photobiomodulation is a widely used tool in regenerative medicine thanks to its ability to modulate a plethora of physiological responses. Wound re-epithelialization is strictly regulated by locally produced chemical mediators, such as nitric oxide (NO), a highly reactive free radical generated by the nitric oxide synthase (NOS) enzymatic family. In this study, it has been hypothesized that a 980-nm low-level laser stimulation could increase NO production in human keratinocytes and that such event might be directly related to the re-epithelialization process...
January 18, 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/29349511/treatment-of-severe-periodontitis-with-a-laser-and-light-emitting-diode-led-procedure-adjunctive-to-scaling-and-root-planing-a-double-blind-randomized-single-center-split-mouth-clinical-trial-investigating-its-efficacy-and-patient-reported-outcomes-at-1%C3%A2-year
#2
Marco Giannelli, Fabrizio Materassi, Tiziana Fossi, Luca Lorenzini, Daniele Bani
Broad methodological heterogeneity makes the literature on the clinical effects of laser treatment in periodontitis, both as monotherapy and adjunct to non-surgical therapy, which is difficult to interpret. The present split-mouth study was performed: (i) to determine the efficacy and safety of a photoablative-photodynamic diode laser therapy, including antiseptic LED irradiation, in adjunct to scaling and root planing (iPAPD+SRP) vs. sham-treatment+SRP for the treatment of diffuse severe periodontitis and (ii) to estimate the patient-reported outcomes...
January 18, 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/29340854/therapeutic-efficacy-and-safety-of-a-1927-nm-fractionated-thulium-laser-on-pattern-hair-loss-an-evaluator-blinded-split-scalp-study
#3
Sung Bin Cho, Boncheol Leo Goo, Zhenlong Zheng, Kwang Ho Yoo, Jin-Soo Kang, Heesu Kim
Laser- or light-assisted therapies have been used to improve the perifollicular environment by upregulating the expression of growth factors and signaling molecules for hair restoration. The aim of our study was to preclinically and clinically evaluate the therapeutic efficacy and safety of a 1927-nm fractionated thulium laser on pattern hair loss (PHL). An in vivo hairless mouse study and an in vivo human skin environmental scanning electron microscopy (ESEM) study were performed with different power and energy settings...
January 16, 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/29333582/outpatient-erbium-yag-2940%C3%A2-nm-laser-treatment-for-snoring-a-prospective-study-on-40-patients
#4
Isabelle Fini Storchi, Steven Parker, Francesca Bovis, Stefano Benedicenti, Andrea Amaroli
Snoring is a sleep phenomenon due to the partial upper airway obstruction during sleep which causes vibration of the tissues of the rhino-oro-hypopharynx and less frequently the larynx. This study evaluated the use and effectiveness of the erbium:YAG 2940-nm laser as an adjunctive in providing treatment for patients suffering from chronic snoring-related sleep disorders. A prospective study of 40 consecutive patients with snoring and sleep disorders was performed, assessing data before and after three Er:YAG laser treatment sessions...
January 15, 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/29333581/high-final-energy-of-gallium-arsenide-laser-increases-myod-gene-expression-during-the-intermediate-phase-of-muscle-regeneration-after-cryoinjury-in-rats
#5
Caroline Pereira Santos, Andreo Fernando Aguiar, Ines Cristina Giometti, Thaoan Bruno Mariano, Carlos Eduardo Assumpção de Freitas, Gisele Alborghetti Nai, Selma Zambelli de Freitas, Maeli Dal Pai-Silva, Francis Lopes Pacagnelli
The aim of this study was to determine the effects of gallium arsenide (GaAs) laser on IGF-I, MyoD, MAFbx, and TNF-α gene expression during the intermediate phase of muscle regeneration after cryoinjury 21 Wistar rats were divided into three groups (n = 7 per group): untreated with no injury (control group), cryoinjury without GaAs (injured group), and cryoinjury with GaAs (GaAs-injured group). The cryoinjury was induced in the central region of the tibialis anterior muscle (TA). The region injured was irradiated once a day during 14 days using GaAs laser (904 nm; spot size 0...
January 15, 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/29332258/photodynamic-antimicrobial-chemotherapy-pact-using-toluidine-blue-inhibits-both-growth-and-biofilm-formation-by-candida-krusei
#6
Bruna Graziele Marques da Silva, Moisés Lopes Carvalho, Isabela Bueno Rosseti, Stella Zamuner, Maricilia Silva Costa
Among non-albicans Candida species, the opportunistic pathogen Candida krusei emerges because of the high mortality related to infections produced by this yeast. The Candida krusei is an opportunistic pathogen presenting an intrinsic resistance to fluconazol. In spite of the reduced number of infections produced by C. krusei, its occurrence is increasing in some groups of patients submitted to the use of fluconazol for prophylaxis. Photodynamic antimicrobial chemotherapy (PACT) is a potential antimicrobial therapy that combines visible light and a nontoxic dye, known as a photosensitizer, producing reactive oxygen species (ROS) that can kill the treated cells...
January 13, 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/29327089/comparative-efficacy-of-er-cr-ysgg-and-er-yag-lasers-for-etching-of-composite-for-orthodontic-bracket-bonding
#7
Amir Hossein Mirhashemi, Nasim Chiniforush, Nastaran Sharifi, Amir Mehdi Hosseini
Several techniques have been proposed to obtain a durable bond, and the efficacy of these techniques is assessed by measuring parameters such as bond strength. Laser has provided a bond strength as high as that of acid etching in vitro and has simpler use with shorter clinical time compared to acid etching. This study aimed to compare the efficacy of Er:YAG and Er,Cr:YSGG lasers for etching and bonding of composite to orthodontic brackets. No previous study has evaluated the effect of these particular types of laser...
January 11, 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/29327088/amplification-of-pressure-waves-in-laser-assisted-endodontics-with-synchronized-delivery-of-er-yag-laser-pulses
#8
Nejc Lukač, Matija Jezeršek
When attempting to clean surfaces of dental root canals with laser-induced cavitation bubbles, the resulting cavitation oscillations are significantly prolonged due to friction on the cavity walls and other factors. Consequently, the collapses are less intense and the shock waves that are usually emitted following a bubble's collapse are diminished or not present at all. A new technique of synchronized laser-pulse delivery intended to enhance the emission of shock waves from collapsed bubbles in fluid-filled endodontic canals is reported...
January 11, 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/29322402/laser-treatment-of-primary-axillary-hyperhidrosis-a-review-of-the-literature
#9
Jessica Cervantes, Marina Perper, Ariel E Eber, Raymond M Fertig, John P Tsatalis, Keyvan Nouri
Hyperhidrosis o`ccurs when the body produces sweat beyond what is essential to maintain thermal homeostasis. The condition tends to occur in areas marked by high-eccrine density such as the axillae, palms, and soles and less commonly in the craniofacial area. The current standard of care is topical aluminum chloride hexahydrate antiperspirant (10-20%), but other treatments such as anticholinergics, clonidine, propranolol, antiadrenergics, injections with attenuated botulinum toxin, microwave technology, and surgery have been therapeutically implicated as well...
January 11, 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/29318478/letter-about-treatment-for-residual-stones-using-flexible-ureteroscopy-and-holmium-laser-lithotripsy-after-the-management-of-complex-calculi-with-single-tract-percutaneous-nephrolithotomy
#10
LETTER
Roberto Mario Scarpa, Cesare Marco Scoffone, Cecilia Maria Cracco
No abstract text is available yet for this article.
January 9, 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/29313161/benign-prostatic-hyperplasia-surgical-scoring-bphss-an-novel-scoring-system-for-the-perioperative-outcomes-of-holmium-laser-enucleation-of-the-prostate
#11
Huan Xu, Zhikang Cai, Yanbo Chen, Meng Gu, Qi Chen, Zhong Wang
To develop a standardized scoring system, the BPH surgical scoring (BPHSS) system, to quantify the ability to predict the perioperative outcomes resulting from an enlarged prostate. There are two parts included in this study: the retrospective observational study (875 patients treated with holmium laser enucleation of the prostate, HoLEP) and the prospective observational study (111 patient underwent HoLEP). All the outcome data included the following: the basic patient preoperative characteristics, operation time (OT), pre- and post- surgery hemoglobin decrease, Na+ variation, hospital stay duration, duration of bladder irrigation, catheterization time, and hospitalization time...
January 8, 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/29308553/the-assessment-of-buerger-s-exercise-on-dorsal-foot-skin-circulation-in-patients-with-vasculopathic-diabetic-foot-ulcer-by-using-wireless-near-infrared-spectroscope-a-cohort-prospective-study
#12
Bor-Shyh Lin, Chang-Cheng Chang, Chun-Lin Su, Jhe-Ruei Li, Min-Ling Chen, Mei-Yen Chen, Yao-Kuang Huang
The improvement of peripheral circulation is crucial for the care of vasculopathic diabetic foot ulcer (DFU). Near-infrared spectroscopy (NIRS) was used to investigate the effects of Buerger's exercise on dorsal foot skin circulation with novel technique of measuring the absorption difference in wavelength of light between oxy-hemoglobin (HbO2) and deoxy-hemoglobin (HbR). Patients with vasculopathic DFU who could tolerate Buerger's exercise three times a day at home for at least 8 weeks were enrolled (group A)...
January 8, 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/29308552/in-vivo-study-of-dermal-collagen-of-striae-distensae-by-confocal-raman-spectroscopy
#13
Pam Wen Lung, Vamshi Krishna Tippavajhala, Thiago de Oliveira Mendes, Claudio A Téllez-Soto, Desirée Cigaran Schuck, Carla Abdo Brohem, Marcio Lorencini, Airton Abrahão Martin
This research work mainly deals with studying qualitatively the changes in the dermal collagen of two forms of striae distensae (SD) namely striae rubrae (SR) and striae albae (SA) when compared to normal skin (NS) using confocal Raman spectroscopy. The methodology includes an in vivo human skin study for the comparison of confocal Raman spectra of dermis region of SR, SA, and NS by supervised multivariate analysis using partial least squares discriminant analysis (PLS-DA) to determine qualitatively the changes in dermal collagen...
January 7, 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/29306975/combination-of-mppa-pdt-and-hsv1-tk-gcv-gene-therapy-on-prostate-cancer
#14
Liming Liang, Wenxiang Bi, Weiwen Chen, Yani Lin, Yuanyuan Tian
We combined pyropheophorbide-a methyl ester, photodynamic therapy (MPPa-PDT), 670 ± 10 nm, 4 mW/cm2, with herpes simplex virus type 1 thymidine kinase/ganciclovir (HSV1-TK/GCV) to improve the therapeutic effect. We built HSV1-TK expression vector GV230-TK and we observed a bright green fluorescence under fluorescence microscope. It indicated the recombinant plasmid was transfected into PC-3M prostate cancer cells successfully. As the abundant glucose-regulated protein 78 (GRP78) promoter in PC-3M cells can cause active expression of HSV1-TK, cell protein was collected for western blot to determine the expression of HSV1-TK...
January 6, 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/29306974/the-effects-of-transcutaneous-low-level-laser-therapy-on-the-skin-healing-process-an-experimental-model
#15
Felipe Scholz Ramos, Laura Beatriz Mesiano Maifrino, Sarah Alves, Beatriz da Costa Aguiar Alves, Matheus Moreira Perez, David Feder, Ligia Ajaime Azzalis, Virginia Berlanga Campos Junqueira, Fernando Luiz Affonso Fonseca
We aim to evaluate the action of transcutaneous laser in the initial wound healing process. The use of low-level laser therapy (LLLT) has proven to be effective on inflammatory modulation and wound healing. The trial was performed on five groups of rats, through a dorsal incision. All groups received treatment on auricular artery. Groups 1 and 3 were treated with transcutaneous LLLT over a period of 15 min. Groups 2 and 4 received one and two inactive laser applications (placebo), respectively. Group 5 was the control one...
January 6, 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/29302842/effects-of-high-frequency-near-infrared-diode-laser-irradiation-on-the-proliferation-and-migration-of-mouse-calvarial-osteoblasts
#16
Ryo Kunimatsu, Hidemi Gunji, Yuji Tsuka, Yuki Yoshimi, Tetsuya Awada, Keisuke Sumi, Kengo Nakajima, Aya Kimura, Tomoka Hiraki, Takaharu Abe, Hirose Naoto, Makoto Yanoshita, Kotaro Tanimoto
Laser irradiation activates a range of cellular processes and can promote tissue repair. Here, we examined the effects of high-frequency near-infrared (NIR) diode laser irradiation on the proliferation and migration of mouse calvarial osteoblastic cells (MC3T3-E1). MC3T3-E1 cells were cultured and exposed to high-frequency (30 kHz) 910-nm diode laser irradiation at a dose of 0, 1.42, 2.85, 5.7, or 17.1 J/cm2. Cell proliferation was evaluated with BrdU and ATP concentration assays. Cell migration was analyzed by quantitative assessment of wound healing using the Incucyt® ZOOM system...
January 4, 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/29299693/picosecond-532-nm-neodymium-doped-yttrium-aluminum-garnet-laser-a-promising-modality-for-the-management-of-verrucous-epidermal-nevi
#17
Assi Levi, Dan Ben Amitai, Daniel Mimouni, Yael A Leshem, Ofir Arzi, Moshe Lapidoth
The verrucous epidermal nevus (VEN) is the most common type of epidermal nevi. As lesions can be disfiguring, treatment is often sought. Many therapeutic approaches have been reported, with variable efficacy and safety. Picosecond (PS) lasers are novel laser devices designated to target small chromophores. A side effect of these lasers is blistering due to epidermal-dermal separation. We aimed to harness this side effect of the PS lasers to treat patients with VEN. The purpose of this study was to report our experience treating VEN using a PS 532-nm laser...
January 3, 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/29282560/effects-of-corticopuncture-cp-and-low-level-laser-therapy-lllt-on-the-rate-of-tooth-movement-and-root-resorption-in-rats-using-micro-ct-evaluation
#18
Selly Sayuri Suzuki, Aguinaldo Silva Garcez, Patricia Oblitas Reese, Hideo Suzuki, Martha Simões Ribeiro, Won Moon
The aim of this study was to compare the rate of tooth displacement, quantity of root resorption, and alveolar bone changes in five groups: corticopuncture (CP), low-level laser therapy (LLLT), CP combined with LLLT (CP + LLLT), control (C), and negative control (NC). A total of 60 half-maxilla from 30 male Wistar rats (10 weeks old) were divided randomly into five groups: three (CP, LLLT, and CP + LLLT) test groups with different stimulation for accelerated-tooth-movement (ATM), one control (C) group, and one negative control (NC) group with no tooth movement...
December 27, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/29280079/photobiomodulation-increases-mitochondrial-citrate-synthase-activity-in-rats-submitted-to-aerobic-training
#19
Wouber Hérickson de Brito Vieira, Cleber Ferraresi, Maria Luiza Barcellos Schwantes, Sérgio Eduardo de Andrade Perez, Vilmar Baldissera, Mikhail Santos Cerqueira, Nivaldo Antonio Parizotto
This study investigated the effects of photobiomodulation by low-laser laser therapy (LLLT) on the activities of citrate synthase (CS) and lactate dehydrogenase (LDH) and the anaerobic threshold (AT) in rats submitted to treadmill exercise. Fifty-four rats were allocated into four groups: rest control (RCG), rest laser (RLG), exercise control (ECG), and exercise laser (ELG). The infrared LLLT was applied daily on the quadriceps, gluteus maximum, soleus, and tibialis anterior muscles. Muscle samples (soleus, tibialis anterior, and cardiac muscles) were removed 48 h after the last exercise session for spectrophotometric analysis of the CS and LDH...
December 26, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/29273892/low-level-laser-therapy-in-the-management-of-plantar-fasciitis-a-randomized-controlled-trial
#20
Eda Cinar, Shikha Saxena, Fatma Uygur
This study aimed at estimating the extent to which a combination therapy of low-level laser therapy (LLLT) with exercise and orthotic support (usual care) affects functional ability in the patient with plantar fasciitis (PF) when compared to usual care alone. Participants with PF were randomly allocated into two groups: LLLT (n = 27) and control (n = 22). All the participants received home exercise program with orthotic support. In addition, the LLLT group received a gallium-aluminum-arsenide laser with a 850-nm wavelength for ten sessions, three times a week...
December 23, 2017: Lasers in Medical Science
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