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Photodiagnosis and Photodynamic Therapy

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https://www.readbyqxmd.com/read/28093356/laser-and-photochemotherapy-for-the-treatment-of-oral-mucositis-in-young-patients-randomized-clinical-trial
#1
João Batista Medeiros Filho, Etevaldo Matos Maia Filho, Meire Coelho Ferreira
BACKGROUND: The aim of the present study was to evaluate the effect of low-level laser therapy (LLLT) combined with photochemotherapy (PCT) for the treatment of chemotherapy-induced oral mucositis in young patients. METHODS: A randomized, blind, clinical trial with a split-mouth design was conducted involving a sample of 15 cancer patients aged three to 16 years at the Aldenora Bello Hospital in the city of São Luís, Brazil. The treatments (PCT+LLLT and LLLT alone) were randomly determined for each side of the oral cavity...
January 13, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28088439/antimicrobial-activity-of-photodynamic-therapy-in-combination-with-colistin-against-a-pan-drug-resistant-acinetobacter-baumannii-isolated-from-burn-patient
#2
Ebrahim Boluki, Hossein Kazemian, Hadi Peeridogaheh, Mohammad Yousef Alikhani, Sima Shahabi, Leili Beytollahi, Roghayeh Ghorbanzadeh
Nosocomially-acquired multi-, extensively-, and pandrug resistant (MDR, XDR, and PDR) strains of microorganisms such as Acinetobacter baumannii remain a serious cause of infection and septic mortality in burn patients. Treatment of patients with nosocomial burn wound infections is often complicated by drug-resistant strains of A. baumannii. Today, many researchers are focusing on the investigation of novel non-antibiotic strategies such as photodynamic therapy (PDT). We report a new PDT strategy that suppresses colistin resistance in PDR A...
January 11, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28087479/synthesis-and-characterization-of-gold-nanostructured-chorin-e6-for-photodynamic-therapy
#3
L Vieira, M L Castilho, I Ferreira, J Ferreira-Strixino, K C Hewitt, L Raniero
Photodynamic therapy is an alternative treatment for cancer based on cellular uptake of a photosensitizer, illuminated with an appropriate wavelength in the presence of oxygen. A cascade of reactions generates reactive oxygen species leading to cell death. Using carbodiimide chemistry, chlorin e6 (Ce6) was covalently bonded to thiourea, and (via the sulphur end group) to gold nanoparticles (AuNPs), forming the Ce6-AuNP complex. Ce6 absorbs in the range 650-680nm, where the coefficient of biological tissue absorption is low (part of the therapeutic window), which is ideal for biological application...
January 10, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28089923/nursing-care-management-of-photodynamic-therapy-in-digestive-tract-carcinomas-at-a-single-cancer-center
#4
Atsushi Nanashima, Koji Nakashima, Hiroshi Kawakami, Shinya Ashizuka, Yoshimasa Kubota
The primary goal of nursing care in cases of endoscopic photodynamic therapy (PDT) for digestive tract carcinoma is to prevent phototoxicity by the intravenous administration of photosensitizers. The adequate protocol and management of patients should be conducted under the instruction of expert physicians. Our experiences of administering porfimer sodium and talaporfin sodium during clinical PDT provide insight regarding the specific management protocol of each photosensitizer during an in-hospital stay. We herein report our nursing protocol based on 15 years of experience...
January 9, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28065860/influence-of-ultrasonic-activation-over-final-irrigants-in-the-removal-of-photosensitizer-from-root-canal-walls-after-photodynamic-therapy
#5
Matheus Albino Souza, Bianca Pazinatto, Karolina Frick Bischoff, Huriel Scartazzini Palhano, Doglas Cecchin, José Antônio Poli de Figueiredo
INTRODUCTION: The aim of the present study was to evaluate the influence of ultrasonic activation (US) of the final irrigant in the removal of the photosensitizer from root canal walls after photodynamic therapy. METHODS: The root canals of 60 single-rooted bovine extracted teeth were filled with 0.01% methylene blue and submitted to photodynamic therapy for 90seconds. After that, the roots were divided into six groups (n=10) according to the final irrigation protocol: distilled water (DW), DW+US, 17% EDTA, QMix, EDTA+US, and QMix+US...
January 5, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28043880/improving-the-competency-of-dental-hygiene-students-in-detecting-dental-restorations-using-quantitative-light-induced-fluorescence-technology
#6
Hye-Young Oh, Hoi-In Jung, Jeong-Woo Lee, Baek-Il Kim
OBJECTIVES: The purpose of this study was to determine the usefulness of a quantitative light-induced fluorescence (QLF) technology in detecting dental restorations by comparing the detection ability of dental hygiene students between using conventional visual inspections alone and visual inspections combined with QLF technology. METHODS: The subjects of this study comprised 92 dental hygiene students. The students assigned to the control group only used white-light images to visually assess the mouth environment, while those in the experimental group additionally used fluorescence images...
December 30, 2016: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28040502/a-comparison-between-effect-of-photodynamic-therapy-by-led-and-calcium-hydroxide-therapy-for-root-canal-disinfection-against-enterococcus-faecalis-a-randomized-controlled-trial
#7
Mohammad Asnaashari, Hengameh Ashraf, Afsaneh Rahmati, Neda Amini
BACKGROUND: Insufficient root canal disinfection is one of the main reasons for persistent periapical pathology. Photodynamic therapy (PDT) has been proven effective in disinfecting infected root canals. The aim of this study was to evaluate the antimicrobial effect of photo activated disinfection (PAD) when using toluidine blue as photosensitizer and a LED lamp after the conventional treatment, and comparing it with calcium hydroxide therapy in vivo. METHODS: This clinical trial includes 20 patients with molars requiring endodontic retreatment...
December 28, 2016: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28038959/minispectrometer-with-handheld-probe-for-5-ala-based-fluorescence-guided-surgery-of-brain-tumors-preliminary-study-for-clinical-applications
#8
J F Cornelius, J M Placke, J Knipps, I Fischer, M Kamp, H J Steiger
INTRODUCTION: Recently a mini-spectrometer with a handheld probe quantifying 5-aminolevulinic acid (5-ALA) based fluorescence intensity of brain tumors was developped by Kim and co-workers to improve fluorescence-guided neurosurgery. OBJECTIVE: To evaluate if this new tool is capable to discriminate nuances of fluorescence intensity of strongly fluorescing tumors (glioblastomas (GBM) and meningiomas (MM)). To study different modes of measurement (touch/no-touch)...
December 27, 2016: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28034762/treatment-of-sweat-gland-carcinoma-with-topical-aminolevulinic-acid-photodynamic-therapy-an-effective-treatment-method-to-improve-surgical-outcomes
#9
Xian He, Yadong Yang, Yang Yang, Yuanyuan Wang, Wensheng Wang, Yanying Song, Yongfang Zen, Yunchuan Yang, Xingcun Zhang, Guoling Li, Yang Gao, Yuangang Lu
BACKGROUND: Sweat gland carcinoma is an extremely rare skin cancer, which is hard to diagnose and completely exsect without causing functional and cosmetic problems. Moreover, the high rate of recurrence is hard to handle in the treatment of sweat gland carcinoma. Photodynamic therapy is a novel treatment protocol which can selectively destroy tumor cell with good functional and cosmetic outcomes. METHODS: This is a case about a 53 years old patient with sweat gland carcinoma on his right foot, which received surgery and photodynamic therapy...
December 26, 2016: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28017834/indocyanine-green-fluorescence-imaging-in-hepatobiliary-surgery
#10
REVIEW
Ali Majlesara, Mohammad Golriz, Mohammadreza Hafezi, Arash Saffari, Esther Wild, Lena Maier-Hein, Beat P Müller-Stich, Arianeb Mehrabi
Indocyanine green (ICG) is a fluorescent dye that has been widely used for fluorescence imaging during hepatobiliary surgery. ICG is injected intravenously, selectively taken up by the liver, and then secreted into the bile. The catabolism and fluorescence properties of ICG permit a wide range of visualization methods in hepatobiliary surgery. We have characterized the applications of ICG during hepatobiliary surgery into: 1) liver mapping, 2) cholangiography, 3) tumor visualization, and 4) partial liver graft evaluation...
December 22, 2016: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28012807/photodynamic-inactivation-of-oral-paracoccidioidomycosis-affecting-woman-with-systemic-lupus-erythematosus-an-unusual-case-report
#11
Cínthia Magalhães Ribeiro, Clenivaldo Alves Caixeta, Marina Lara de Carli, Felipe Fornias Sperandio, Evandro Monteiro de Sá Magalhães, Alessandro Antônio Costa Pereira, João Adolfo Costa Hanemann
No abstract text is available yet for this article.
December 21, 2016: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/27993650/glucose-modulates-antimicrobial-photodynamic-inactivation-of-candida-albicans-in-biofilms
#12
Luis Cláudio Suzuki, Ilka Tiemy Kato, Renato Araujo Prates, Caetano Padial Sabino, Tania Mateus Yoshimura, Tamires Oliveira Silva, Martha Simões Ribeiro
Candida albicans biofilm is a main cause of infections associated with medical devices such as catheters, contact lens and artificial joint prosthesis. The current treatment comprises antifungal chemotherapy that presents low success rates. Photodynamic inactivation (PDI) involves the combination of a photosensitizing compound (PS) and light to generate oxidative stress that has demonstrated effective antimicrobial activity against a broad-spectrum of pathogens, including C. albicans. This fungus senses glucose inducing an upregulation of membrane transporters that can facilitate PS uptake into the cell...
December 16, 2016: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/27988224/photoinactivation-of-single-and-mixed-biofilms-of-candida-albicans-and-non-albicans-candida-species-using-phorodithazine-%C3%A2
#13
Juliana Cabrini Carmello, Fernanda Alves, Ewerton Garcia de Oliveira Mima, Janaina Habib Jorge, Vanderlei Salvador Bagnato, Ana Cláudia Pavarina
This study evaluated the effectiveness of antimicrobial photodynamic therapy (aPDT) mediated by Photodithazine(®) (PDZ) formulated in hydrogel, in the inactivation of mono and duo-species biofilms of Candida albicans, Candida glabrata and Candida tropicalis. Standardized suspensions of each strain were prepared and after biofilm formation, mono-species were treated with 150 and 175mg/L of PDZ for 20minutes (pre-irradiation time), and exposed to LED light at a dose of 37.5J/cm(2) (660nm). The duo-species biofilms (C...
December 14, 2016: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/27965057/visible-light-enhances-the-antimicrobial-effect-of-some-essential-oils
#14
María Soledad Marqués-Calvo, Francesc Codony, Gemma Agustí, Carlos Lahera
The photodisinfection is a topical, broad spectrum antimicrobial technology, targeting bacteria, virus, fungi, and protozoa effective for single cells as for biofilms. Natural molecules have been studied less than synthetic agents in the process but they are currently receiving great interest. Therefore, the aim of this study is to evaluate for the first time if non-coherent blue and red light enhances the antimicrobial activity of some essential oils when standard strains for antibiotic or fungicide tests are enlightened in vitro...
December 10, 2016: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/27939958/the-impact-of-antimicrobial-photodynamic-therapy-on-peri-implant-disease-what-mechanisms-are-involved-in-this-novel-treatment
#15
REVIEW
Lívia Jacovassi Tavares, Ana Claudia Pavarina, Carlos Eduardo Vergani, Erica Dorigatti de Avila
According to the American Academy of Implant Dentistry, 3 million Americans have dental implants, and this number is growing by 500,000 each year. Proportionally, the number of biological complications is also increasing. Among them, peri-implant disease is considered the most common cause of implant loss after osseointegration. In this context, microorganisms residing on the surfaces of implants and their prosthetic components are considered to be the primary etiologic factor for peri-implantitis. Some research groups have proposed combining surgical and non-surgical therapies with systemic antibiotics...
December 6, 2016: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/27931875/efficacy-of-antimicrobial-photodynamic-therapy-in-the-disinfection-of-acrylic-denture-surfaces-a-systematic-review
#16
REVIEW
Sergio Varela Kellesarian, Tariq Abduljabbar, Fahim Vohra, Hans Malmstrom, Michael Yunker, Tammy Varela Kellesarian, Georgios E Romanos, Fawad Javed
BACKGROUND: the aim of the present systematic review was to assess the efficacy of antimicrobial photodynamic therapy (aPDT) in the disinfection of acrylic denture surfaces. METHODS: in order to address the focused question: "Is aPDT more effective in decontaminating denture surfaces compared with traditional denture-disinfection techniques?" an electronic search without time or language restrictions was conducted up to November 2016 in indexed databases using different key words...
December 5, 2016: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/27931874/micro-raman-spectroscopic-study-of-thyroid-tissues
#17
Lázaro Pinto Medeiros Neto, Luis Felipe das Chagas E Silva de Carvalho, Laurita Dos Santos, Cláudio Alberto Tellez Soto, Renata de Azevedo Canevari, André Bandiera de Oliveira Santos, Evandro Sobroza Mello, Marina Aparecida Pereira, Cláudio Roberto Cernea, Lenine Garcia Brandão, Aírton Abrahão Martin
Thyroid carcinomas are the most common endocrine malignancy. Inconclusive results for the analysis of malignancies are an issue in the diagnosis of thyroid carcinomas; 20% of thyroid cancer diagnoses are indeterminate or suspicious, resulting in a surgical procedure without immediate need. The use of Raman spectroscopy may help improve the diagnosis of thyroid carcinoma. In this study, 30 thyroid samples, including normal thyroid, goiter and thyroid cancer, were analyzed by confocal Raman spectroscopy. Principal component analysis (PCA), linear discriminant analysis (LDA) with cross validation and binary logistic regression (BLR) analysis were applied to discriminate among tissues...
December 5, 2016: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/27919664/photodynamic-therapy-with-green-light-for-the-treatment-of-vulvar-lichen-sclerosus-preliminary-results
#18
B J Osiecka, K Jurczyszyn, P Nockowski, M Murawski, P Ziółkowski
INTRODUCTION: The standard treatment for lichen sclerosus (LS) is symptomatic and is primarily based on the chronic use of corticosteroids, sometimes resulting in unsatisfactory effects. Therefore, other non-pharmacological methods are being sought, which are less aggravating for the patient. LS can be treated topically by using photodynamic therapy (PDT) based on 5-aminolevulinic acid (5-ALA). Unfortunately, therapy with the red light is often connected with severe local pain during the illumination...
December 2, 2016: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/27919663/efficacy-of-low-level-laser-therapy-in-the-treatment-of-burning-mouth-syndrome-a-systematic-review
#19
REVIEW
Sadeq Ali Al-Maweri, Fawad Javed, Butchibabu Kalakonda, Nader A AlAizari, Walid Al-Soneidar, Ameen Al-Akwa
BACKGROUND: Burning mouth syndrome (BMS) is a chronic pain condition with indefinite cure, predominantly affecting post-menopausal women. The aim of this study was to systematically review the efficacy of low level laser therapy in the treatment of burning mouth syndrome (BMS). METHODS: PubMed, Embase and Scopus were searched from date of inception till and including October 2016 using various combinations of the following keywords: burning mouth syndrome, BMS, stomatodynia, laser therapy, laser treatment and phototherapy...
December 2, 2016: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/27902926/dental-bleaching-with-the-use-of-violet-light-only-reality-or-future
#20
Andréa Dias Neves Lago, Winnie Dandara Rocha Ferreira, Guilherme Silva Furtado
No abstract text is available yet for this article.
November 27, 2016: Photodiagnosis and Photodynamic Therapy
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