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https://www.readbyqxmd.com/read/28812164/efficacy-of-fractional-lasers-in-treating-alopecia-a-literature-review
#1
Marina Perper, Adam S Aldahan, Rachel A Fayne, Christopher P Emerson, Keyvan Nouri
Hair loss stemming from different types of alopecia, such as androgenic alopecia and alopecia areata, negatively affects over half the population and, in many circumstances, causes serious psychosocial distress. Current treatment options for alopecia, such as minoxidil, anthralin, and intralesional corticosteroids, vary efficacy and side effect profiles. It is known that low-level laser/light therapies (LLLT), or photobiomodulations, such as the US FDA-cleared HairMax Lasercomb®, He-Ne laser, and excimer laser, are relatively affordable, user-friendly, safe, and effective forms of treatment for hair loss...
August 16, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28810266/physiological-and-optical-alterations-precede-the-appearance-of-cataracts-in-cx46fs380-mice
#2
Peter J Minogue, Junyuan Gao, Rebecca K Zoltoski, Layne A Novak, Richard T Mathias, Eric C Beyer, Viviana M Berthoud
Purpose: Cx46fs380 mice model a human autosomal-dominant cataract caused by a mutant lens connexin46, Cx46. Lenses from Cx46fs380 mice develop cataracts that are first observed at ∼2 months in homozygotes and at ≥4 months in heterozygotes. The present studies were conducted to determine whether Cx46fs380 mouse lenses exhibited abnormalities before there are detectable cataracts. Methods: Lenses from wild-type and Cx46fs380 mice were studied at 1 to 3 months of age...
August 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28802703/identification-and-characterization-of-clostridium-botulinum-group-iii-field-strains-by-matrix-assisted-laser-desorption-ionization-time-of-flight-mass-spectrometry-maldi-tof-ms
#3
Luca Bano, Ilenia Drigo, Elena Tonon, Simone Pascoletti, Cinzia Puiatti, Fabrizio Anniballi, Bruna Auricchio, Florigio Lista, Cesare Montecucco, Fabrizio Agnoletti
Animal botulism is primarily due to botulinum neurotoxin (BoNT) types C, D or their chimeric variants C/D or D/C, produced by Clostridium botulinum group III, which appears to include the genetically indistinguishable Clostridium haemolyticum and Clostridium novyi. In the present study, we used matrix-assisted laser desorption-ionization time-of-flight mass spectrometry (MALDI TOF MS) to identify and characterize 81 BoNT-producing Clostridia isolated in 47 episodes of animal botulism. The instrument's default database, containing no entries for Clostridium botulinum, permitted reliable identification of 26 strains at the genus level...
August 9, 2017: Anaerobe
https://www.readbyqxmd.com/read/28802354/a-novel-management-of-streptococcal-pharyngotonsillar-infections-by-laser-activated-silver-nanoparticles-and-methylene-blue-conjugate-in%C3%A2-vitro-study
#4
Ahmed Kassab, Ola Dabous, Mona Morsy
INTRODUCTION: Species of Streptococcus are classified based on their hemolytic properties into alpha and beta types. And, since antimicrobial drug resistance is an increasingly problematic issue, the efforts to develop modalities that would overcome this obstacle and avoid antibiotic side effects is an ongoing challenge. METHODS AND MATERIALS: 20 patients from both sexes were selected. The isolated organisms were identified according to standard laboratory methods...
September 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28801854/how-do-red-and-infrared-low-level-lasers-affect-folliculogenesis-cycle-in-rat-s-ovary-tissue-in-comparison-with-clomiphene-under-in-vivo-condition
#5
Paria Naseri, Alireza Alihemmati, Seyed Hossein Rasta
Folliculogenesis is a cycle that produces the majority of oocyte. Any disruption to this cycle leads to ovulation diseases, like polycystic ovarian syndrome (PCOS). Treatments include drugs and surgery; lasers have also been used complementarily. Meanwhile, still there is no definite treatment for PCOS. This study investigated the photo-bio stimulation effect of near-infrared and red low-level laser on producing follicles and compared the result with result of using common drug, clomiphene. Therefore, the aim of this study was to propose the use of lasers autonomously treatment...
August 11, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28798735/phenotypic-heterogeneity-in-attachment-of-marine-bacteria-toward-antifouling-copolymers-unraveled-by-afm
#6
Sofiane El-Kirat-Chatel, Aurore Puymege, The H Duong, Perrine Van Overtvelt, Christine Bressy, Lénaïk Belec, Yves F Dufrêne, Maëlle Molmeret
Up to recent years, bacterial adhesion has mostly been evaluated at the population level. Single cell level has improved in the past few years allowing a better comprehension of the implication of individual behaviors as compared to the one of a whole community. A new approach using atomic force microscopy (AFM) to measure adhesion forces between a live bacterium attached via a silica microbead to the AFM tipless cantilever and the surface has been recently developed. The objectives of this study is to examine the bacterial adhesion to a surface dedicated to ship hulls at the population and the cellular level to understand to what extent these two levels could be correlated...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28789647/evaluation-of-muscle-activity-bite-force-and-salivary-cortisol-in-children-with-bruxism-before-and-after-low-level-laser-applied-to-acupoints-study-protocol-for-a-randomised-controlled-trial
#7
Mônica da Consolação Canuto Salgueiro, Carolina Carvalho Bortoletto, Anna Carolina RattoTempestini Horliana, Ana Carolina Costa Mota, Lara Jansiski Motta, Pamella de Barros Motta, Raquel Agnelli MesquitaFerrari, Kristianne Porta Santos Fernandes, Sandra Kalil Bussadori
BACKGROUND: Bruxism is a repetitive activity that causes tooth wear, audible sounds, and discomfort. Preventive measures have been studied for conditions that can exert a negative influence on physiological development in children. Low-level laser therapy administered over acupoints is an effective, painless, low-cost treatment option that has achieved good results. Thus, the aim of the proposed study is to evaluate changes in muscle activity, bite force and salivary cortisol in children with bruxism after the application of low-level laser to accupoints...
August 8, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28783464/efficacy-of-multiwave-locked-system-laser-on-pain-and-function-in-patients-with-chronic-neck-pain-a-randomized-placebo-controlled-trial
#8
Mohamed Salaheldien Alayat, Ahmed Mohamed Elsoudany, Mohamed Ebrahim Ali
BACKGROUND: Multiwave locked system (MLS) laser therapy utilizes the synchronized emission of an 808 nm continuous laser and a 905 nm pulsed laser. It is postulated that MLS enables greater penetration and therapeutic benefit than single-wavelength low-level laser therapy (LLLT). OBJECTIVE: The aim of this research was to evaluate the efficacies of MLS laser therapy and the 830 nm laser in the treatment of patients with chronic neck pain (CNP). MATERIALS AND METHODS: Seventy-five patients with CNP (mean age 46...
August 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28777054/an-investigation-of-skin-perfusion-in-venous-leg-ulcer-after-exercise
#9
Omar Mutlak, Mohammed Aslam, Nigel J Standfield
INTRODUCTION: A venous leg ulcer (VLU) has a major impact on the quality of life and functional ability of individuals, but no single treatment is yet effective. This study investigates the changes induced by dorsiflexion exercise on skin perfusion in VLU patients to achieve a better understanding of venous ulcer pathophysiology. METHODS: Seventy-eight venous leg ulcer patients were randomised into four groups. The non-exercise groups included a control group (n = 18) and a compression therapy group (n = 20) and the exercise groups included an exercise-only group (n = 20) and a compression and exercise group (n = 20)...
July 1, 2017: Perfusion
https://www.readbyqxmd.com/read/28776408/long-term-results-of-a-randomized-controlled-double-blind-study-of-low-level-laser-therapy-before-exercises-in-knee-osteoarthritis-laser-and-exercises-in-knee-osteoarthritis
#10
Patrícia Pereira Alfredo, Jan Magnus Bjordal, Washington Steagall Junior, Rodrigo Álvaro Brandão Lopes Martins, Martin B Stausholm, Raquel Aparecida Casarotto, Amélia Pasqual Marques, Jon Joensen
OBJECTIVES: To assess the long-term effects of low-level laser therapy (LLLT), in combination with strengthening exercises in patients with osteoarthritis of the knee. DESIGN: Follow-up results at three and six months in a previously published randomized, double-blind, placebo-controlled trial. SETTING: Specialist Rehabilitation Services. SUBJECTS: Forty participants of both genders, aged 50-75 years with knee osteoarthritis grade 2-4 on Kellgren-Lawrence scale...
August 1, 2017: Clinical Rehabilitation
https://www.readbyqxmd.com/read/28776111/methylene-blue-mediated-photobiomodulation-on-human-osteoblast-cells
#11
Gamze Bölükbaşı Ateş, Ayşe Ak, Bora Garipcan, Murat Gülsoy
Photobiomodulation (PBM) and photodynamic therapy (PDT) are two major methods, which use light in medicine and dentistry. PBM uses low-level laser light to induce cell proliferation and activity. In contrast, PDT use laser light combined with a photosensitizer (PS) to cause cell death. Due to similar, not fully understood mechanisms and biphasic response of light, unexpected and complex outcomes may be observed. In the present study, the effect of 635 nm laser light, with power density 50 mW/cm(2), at three different energy densities (0...
August 4, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28774511/resident-performed-neodymium-yag-laser-posterior-capsulotomy
#12
Khalil Ghasemi Falavarjani, Mohammadreza Aghamirsalim, Kaveh Abri Aghdam
OBJECTIVE: To investigate the outcomes of resident-performed Nd:YAG laser posterior capsulotomy. DESIGN: Combined retrospective and prospective study. PARTICIPANTS: Patients (N = 301) who underwent Nd:YAG capsulotomy by ophthalmology residents at Rassoul Akram Hospital, Tehran, Iran. METHODS: Assessment of visual outcomes and complications and the results of second- and third-year residents. RESULTS: In the retrospective arm, 131 eyes of 129 patients were enrolled...
August 2017: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
https://www.readbyqxmd.com/read/28773794/engineering-of-semiconductor-nanocrystals-for-light-emitting-applications
#13
REVIEW
Francesco Todescato, Ilaria Fortunati, Alessandro Minotto, Raffaella Signorini, Jacek J Jasieniak, Renato Bozio
Semiconductor nanocrystals are rapidly spreading into the display and lighting markets. Compared with liquid crystal and organic LED displays, nanocrystalline quantum dots (QDs) provide highly saturated colors, wide color gamut, resolution, rapid response time, optical efficiency, durability and low cost. This remarkable progress has been made possible by the rapid advances in the synthesis of colloidal QDs and by the progress in understanding the intriguing new physics exhibited by these nanoparticles. In this review, we provide support to the idea that suitably engineered core/graded-shell QDs exhibit exceptionally favorable optical properties, photoluminescence and optical gain, while keeping the synthesis facile and producing QDs well suited for light emitting applications...
August 9, 2016: Materials
https://www.readbyqxmd.com/read/28773173/the-property-preparation-and-application-of-topological-insulators-a-review
#14
REVIEW
Wenchao Tian, Wenbo Yu, Jing Shi, Yongkun Wang
Topological insulator (TI), a promising quantum and semiconductor material, has gapless surface state and narrow bulk band gap. Firstly, the properties, classifications and compounds of TI are introduced. Secondly, the preparation and doping of TI are assessed. Some results are listed. (1) Although various preparation methods are used to improve the crystal quality of the TI, it cannot reach the industrialization. Fermi level regulation still faces challenges; (2) The carrier type and lattice of TI are affected by non-magnetic impurities...
July 17, 2017: Materials
https://www.readbyqxmd.com/read/28773080/estimation-of-articular-cartilage-surface-roughness-using-gray-level-co-occurrence-matrix-of-laser-speckle-image
#15
Doaa Youssef, Hatem El-Ghandoor, Hamed Kandel, Jala El-Azab, Salah Hassab-Elnaby
The application of He-Ne laser technologies for description of articular cartilage degeneration, one of the most common diseases worldwide, is an innovative usage of these technologies used primarily in material engineering. Plain radiography and magnetic resonance imaging are insufficient to allow the early assessment of the disease. As surface roughness of articular cartilage is an important indicator of articular cartilage degeneration progress, a safe and noncontact technique based on laser speckle image to estimate the surface roughness is provided...
June 28, 2017: Materials
https://www.readbyqxmd.com/read/28772451/marginal-accuracy-and-internal-fit-of-3-d-printing-laser-sintered-co-cr-alloy-copings
#16
Myung-Joo Kim, Yun-Jung Choi, Seong-Kyun Kim, Seong-Joo Heo, Jai-Young Koak
Laser sintered technology has been introduced for clinical use and can be utilized more widely, accompanied by the digitalization of dentistry and the development of direct oral scanning devices. This study was performed with the aim of comparing the marginal accuracy and internal fit of Co-Cr alloy copings fabricated by casting, CAD/CAM (Computer-aided design/Computer-assisted manufacture) milled, and 3-D laser sintered techniques. A total of 36 Co-Cr alloy crown-copings were fabricated from an implant abutment...
January 23, 2017: Materials
https://www.readbyqxmd.com/read/28770296/a-systematic-review-on-vaginal-laser-therapy-for-treating-stress-urinary-incontinence-do-we-have-enough-evidence
#17
REVIEW
Vasilios Pergialiotis, Anastasia Prodromidou, Despina N Perrea, Stergios K Doumouchtsis
INTRODUCTION AND HYPOTHESIS: Current treatment strategies for stress urinary incontinence (SUI) raise concerns about safety and efficacy. The purpose of this systematic review was to present available evidence related to vaginal laser therapy as a treatment option for SUI. METHODS: We searched the MEDLINE (1966-2017), Scopus (2004-2017), Clinicaltrials.gov (2008-2017) and Cochrane Central Register of Controlled Trials (CENTRAL) (1999-2017) databases for relevant studies in this field...
August 2, 2017: International Urogynecology Journal
https://www.readbyqxmd.com/read/28766756/efficacy-of-low-level-laser-therapy-compared-to-steroid-therapy-in-the-treatment-of-oral-lichen-planus-a-systematic-review
#18
REVIEW
Zohaib Akram, Tariq Abduljabbar, Fahim Vohra, Fawad Javed
BACKGROUND: Low level laser therapy (LLLT) has been proposed as a potential treatment strategy for the treatment of oral lichen planus (OLP). The aim of this systematic review was to assess the efficacy of LLLT, in comparison with corticosteroid therapy, in the treatment of OLP. MATERIALS AND METHODS: This systematic review aimed to address the following focused question: "Does LLLT yield better clinical outcomes than corticosteroid therapy in the treatment of OLP?" Indexed databases were searched up to and including April 2017...
August 2, 2017: Journal of Oral Pathology & Medicine
https://www.readbyqxmd.com/read/28753088/histologic-analyses-on-the-response-of-the-skin-to-1-927-nm-fractional-thulium-fiber-laser-treatment
#19
In Ho Kwon, Youin Bae, Un-Cheol Yeo, Young Hee Choi, Gyeong-Hun Park
BACKGROUND: The histologic responses to varied parameters of 1,927-nm fractional thulium fiber laser treatment have not yet been sufficiently elucidated. OBJECTIVE: This study sought to evaluate histologic changes immediately after 1,927-nm fractional thulium fiber laser session at various parameters. METHODS: The dorsal skin of Yucatan mini pig was treated with 1,927-nm fractional thulium fiber laser at varied parameters, with or without skin drying...
July 28, 2017: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/28748217/mechanisms-and-applications-of-the-anti-inflammatory-effects-of-photobiomodulation
#20
Michael R Hamblin
Photobiomodulation (PBM) also known as low-level level laser therapy is the use of red and near-infrared light to stimulate healing, relieve pain, and reduce inflammation. The primary chromophores have been identified as cytochrome c oxidase in mitochondria, and calcium ion channels (possibly mediated by light absorption by opsins). Secondary effects of photon absorption include increases in ATP, a brief burst of reactive oxygen species, an increase in nitric oxide, and modulation of calcium levels. Tertiary effects include activation of a wide range of transcription factors leading to improved cell survival, increased proliferation and migration, and new protein synthesis...
2017: AIMS Biophysics
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