Photosensitizer
Mostrando 1-12 de 85 artigos, teses e dissertações.
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1. NO Photorelease from a Ruthenium Complex Assisted by Formation of a Supramolecular Dimer
This work presents the NO release from compound [Ru(biq)2(H2O)(NO)](PF6)3 (biq = 2,2’-biquinoline) with visible light irradiation (λirrad = 660 nm), assisted by the low-absorbing photosensitizer [Ru(biq)2Cl2]. The structure of both compounds were characterized by means of ESI-MS (electrospray ionization mass spectrometry). The NO+ stretching, ν(NO) = 199
J. Braz. Chem. Soc.. Publicado em: 2020-11
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2. Upconversion 3D Printed Composite with Multifunctional Applications for Tissue Engineering and Photodynamic Therapy
Upconversion nanoparticles (UCNPs) are suitable materials for bioapplications due to their ability to emit visible light under near infrared (NIR) excitation, in the biological transparency range. Polycaprolactone(PCL)-based scaffolds are widely used in tissue engineering in combination with inorganic compounds to improve bioactivity and osteoconductive prop
J. Braz. Chem. Soc.. Publicado em: 2020-04
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3. The ineffectiveness of antimicrobial photodynamic therapy in the absence of preincubation of the microorganisms in the photosensitizer
Resumo Introdução: Considerando seu potencial como forma de combate alternativo a bactérias multirresistentes, a terapia fotodinâmica vem sendo aperfeiçoada e mais bem estudada nos últimos anos, sendo importante determinar seus padrões otimizados de aplicação. Objetivo: O objetivo deste estudo foi avaliar a ação da terapia fotodinâmica antimi
Fisioter. mov.. Publicado em: 13/01/2020
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4. Comparison of apical periodontitis repair in endodontic treatment with calcium hydroxide-dressing and aPDT
Abstract This study evaluated the effect of antimicrobial photodynamic therapy (aPDT) on the endodontic treatment of apical periodontitis (AP). AP was induced in 48 premolars of 6 dogs. After biomechanical preparation, the teeth were divided into 4 groups: Calcium-Hydroxide (CH)/120d and CH/180d: root canals filled with CH-based dressing for 15 days before o
Braz. oral res.. Publicado em: 26/09/2019
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5. Effects of nanoparticles of hydroxy-aluminum phthalocyanine on markers of liver injury and glucose metabolism in diabetic mice
Photodynamic therapy, by reducing pain and inflammation and promoting the proliferation of healthy cells, can be used to treat recurrent lesions, such as diabetic foot ulcers. Studies using the photosensitizer phthalocyanine, together with the nanostructured copolymeric matrix of Pluronic® and Carbopol® for the treatment of diabetic foot ulcers and leishma
Braz J Med Biol Res. Publicado em: 03/12/2018
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6. Use of photodynamic inactivation for in vitro reduction of prevalent bacteria in Fournier's Gangrene
ABSTRACT Fournier's Gangrene (FG) is an infectious disease caused by several synergic microbes, with high morbidity and mortality rates; therefore, the search for new less invasive and mutilating treatments, with faster recovery, has been proposed. Surgical intervention, the use of several systemic and topic antibiotics, and hyperbaric oxygen therapy are cur
Int. braz j urol.. Publicado em: 2018-02
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7. An insight on the role of photosensitizer nanocarriers for Photodynamic Therapy
ABSTRACT Photodynamic therapy (PDT) is a modality of cancer treatment in which tumor cells are destroyed by reactive oxygen species (ROS) produced by photosensitizers following its activation with visible or near infrared light. The PDT success is dependent on different factors namely on the efficiency of the photosensitizer deliver and targeting ability. In
An. Acad. Bras. Ciênc.. Publicado em: 2018
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8. Photodynamic action of the red laser on Propionibacterium acnes
Abstract: Background: Photodynamic therapy is a therapeutic modality that has consolidated its activity in the photooxidation of organic matter, which arises from the activity of reactive oxygen species. Objective: To evaluate the effect of red laser 660nm with the photosensitizer methylene blue on Propionibacterium acnes in vitro. Method: The experimenta
An. Bras. Dermatol.. Publicado em: 2017-10
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9. Bacterial Cellulose Membranes as a Potential Drug Delivery System for Photodynamic Therapy of Skin Cancer
The development of drug delivery systems for photodynamic therapy (PDT) is increasingly demanded due to the hydrophobicity presented by most of photosensitizers molecules. Bacterial cellulose (BC), a highly pure cellulose produced by bacteria, possesses the essential features for applications in drug delivery systems, such as large surface area and excellent
J. Braz. Chem. Soc.. Publicado em: 2016-11
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10. Distribution of Xanthene Dyes in DPPC Vesicles: Rationally Accounting for Drug Partitioning Using a Membrane Model
The correct selection of a dye that has effective action as a photosensitizer is a primary concern for successful therapeutic outcomes. The effectiveness of the photodynamic agent is related to both the targeting of cell membranes and the photochemical yield of the chosen dye. The distributions of xanthene derivatives Eosin Y, Erythrosin B, and Rose Bengal B
J. Braz. Chem. Soc.. Publicado em: 2016-11
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11. Photodynamic action of protoporphyrin IX derivatives on Trichophyton rubrum
Abstract: BACKGROUND: Dermatophytes are filamentous keratinophilic fungi. Trichophyton rubrum is a prevalent infectious agent in tineas and other skin diseases. Drug therapy is considered to be limited in the treatment of such infections, mainly due to low accessibility of the drug to the tissue attacked and development of antifungal resistance in these mic
An. Bras. Dermatol.. Publicado em: 2016-04
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12. Nanotechnology, Light and Chemical Action: an Effective Combination to Kill Cancer Cells
Photodynamic therapy (PDT) is a minimally invasive and effective procedure for treatment of cancer, based on the combination of a drug (photosensitizer, PS), light (visible or near-infrared, NIR) and induced local formation of reactive oxygen species (ROS) and radicals. Despite its less significant side effects as compared with conventional therapies, many e
J. Braz. Chem. Soc.. Publicado em: 2015-12