PubMed Journals Articles About "Combined Effectiveness Cyclodextrin Nanoparticles Photodynamic Antimicrobial Chemotherapy Vitro" RSS

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Showing "Combined Effectiveness Cyclodextrin Nanoparticles Photodynamic Antimicrobial Chemotherapy Vitro" PubMed Articles 1–25 of 19,000+

Combined Effectiveness of β-Cyclodextrin Nanoparticles in Photodynamic Antimicrobial Chemotherapy on In Vitro Oral Biofilms.

This study aimed to investigate if β-cyclodextrin nanoparticles potentiate the photodynamic antimicrobial chemotherapy (PACT) effects in single and microcosm oral biofilms using methylene blue (MB) and a red laser. Studies of PACT have demonstrated promising effects; however, the association of nanoparticles with photosensitizers could enhance the antimicrobial result. Biofilms were grown on enamel blocks either with or in a microcosm model (salivary microorganisms) supplemented with sucrose. PACT using...

The effectiveness of curcumin-mediated antimicrobial photodynamic therapy depends on pre-irradiation and biofilm growth times.

The aim of this study was to determine the influence of distinct pre-irradiation times (PIT) of curcumin on the effectiveness of the antimicrobial photodynamic therapy (aPDT) against intact dentin caries biofilms grown for 3 or 5 days.

Photodynamic antimicrobial chemotherapy with the photosensitizer TONS504 eradicates Acanthamoeba.

Microbial keratitis is a potential cause of corneal blindness. We investigated the amoebicidal efficacy of photodynamic antimicrobial chemotherapy with a light-emitting diode as the light source and the cationic chlorin derivative TONS504 as the photosensitizer for the elimination ofAcanthamoeba, a causative organism of corneal infection and blindness. Acanthamoeba keratitis remains a challenge to treat because of limited available treatments.

Porphyrinoid photosensitizers mediated photodynamic inactivation against bacteria.

The multi-drug resistant bacteria have become a serious problem complicating therapies to such a degree that often the term "post-antibiotic era" is applied to describe the situation. The infections with methicillin-resistant S. aureus, vancomycin-resistant E. faecium, third generation cephalosporin-resistant E. coli, third generation cephalosporin-resistant K. pneumoniae and carbapenem-resistant P. aeruginosa have become commonplace. Thus, the new strategies of infection treatment have been searched f...

In- vitro-activity of additive application of hydrogen peroxide in antimicrobial photodynamic therapy using LED in the blue spectrum against bacteria and biofilm being associated with periodontal disease.

Although antimicrobial photodynamic therapy (aPDT) has been shown to be efficient in killing planktonic periodontopathogenic bacteria, its activity on established biofilms is very limited. The aim of the present in-vitro study was to evaluate the potential effect of hydrogen peroxide as a pretreatment for aPDT.

Enzyme and pH dual-responsive hyaluronic acid nanoparticles mediated combination of photodynamic therapy and chemotherapy.

Hyaluronic acid (HA) is a natural biopolymer that can target to tumor cells due to CD44 receptors overexpressed in tumor cells. Here, a theranostic nanoparticle HA-Ce6 (DOX) with enzyme and pH dual-responsive is presented, which combined HA and a highly promised photosensitizer chlorin e6 (Ce6) using adipic dihydrazide (ADH) as a linker. The hydrazide group on its surface can efficiently conjugate doxorubicin to form HA-Ce6 (DOX) nanoparticles through the pH-sensitive hydrazone bond. In this study, the dual...

Combined Cancer Chemo-Photodynamic and Photothermal Therapy Based on ICG/PDA/TPZ-Loaded Nanoparticles.

Although photodynamic therapy (PDT) has been an attractive strategy for several cancer treatments in the clinical setting, PDT efficacy is attenuated by consumption of oxygen. To address this photodynamic issue, we adopted a phototherapy-chemotherapy combination strategy based on targeted delivery of the near-infrared photosensitizer indocyanine green (ICG), photothermal conversion agent polydopamine (PDA), and tirapazamine (TPZ), a hypoxia-activated prodrug. Under laser irradiation, ICG consumption of oxyg...

Assessment of sensitivity of selected Candida strains on antimicrobial photodynamic therapy using diode laser 635 nm and toluidine blue - in vitro research.

Photodynamic therapy is believed to be a promising alternative treatment for Candida infections. The study evaluated the efficacy of antimicrobial photodynamic therapy (aPDT) using the 635 nm diode laser light and toluidine blue (TB) in the elimination of selected Candida species cultured on acrylic surface.

Facile Fabrication of Nanoscale Porphyrinic Covalent Organic Polymers for Combined Photodynamic and Photothermal Cancer Therapy.

Photodynamic therapy (PDT) of cancers is usually inefficient due to the relatively low level of oxygen in cancer cells, therefore, it needs to combine with other treatment strategies such as chemotherapy or photothermal therapy (PTT) to achieve the best anticancer efficacy. Although porphyrin-containing materials have been widely studied for PDT, the photothermal effect is rarely reported. Herein, nanoscale porphyrin-containing covalent organic polymers (PCOP) were produced via a room temperature solution-b...

Influence of antimicrobial photodynamic therapy in carious lesion. Randomized split-mouth clinical trial in primary molars.

The literature has presented many studies regarding photodynamic antimicrobial therapy (aPDT). However, the great variety of protocols to be used can directly influence its effectiveness in reducing microorganisms. The aim of this randomized split-mouth clinical study was to evaluate the effect of aPDT in the reduction of Streptococcus mutans and their effect on restorations performed.

Antimicrobial Efficacy of Photodynamic Therapy Using Two Different Light Sources on the Titanium-Adherent Biofilms of Aggregatibacter actinomycetemcomitans: An in vitro study.

Antimicrobial photodynamic therapy (aPDT), is a promising approach proposed as an adjunct for the decontamination of dental implant surfaces. This study aimed to investigate the effect of aPDT with laser or light emitting diode (LED) compared with conventional chlorhexidine treatment on the titanium-attached biofilms ofAggregatibacter actinomycetemcomitans.

Spray dried curcumin loaded nanoparticles for antimicrobial photodynamic therapy.

Antimicrobial resistance is one of the most serious problems that researchers of multiple disciplines are working on. The number of new antibiotics and their targeted structures have continuously decreased emphasizing the demand of alternative therapy for bacterial infections. Photodynamic therapy is such a promising strategy that has been proven to be effective against a wide range of bacterial strains. In this study, an inhalable nanoformulation for photodynamic therapy against respiratory infections was ...

In vitro photodynamic inactivation effects of hypocrellin B on azole-sensitive and resistant Candida albicans.

The extensive use of antifungal drugs has led to the resistance of Candida albicans. The search for alternative treatment against drug-resistant C. albicans is highly desirable. Antimicrobial photodynamic therapy (aPDT) is an emerging and promising approach for treating localized and superficial C. albicans infections. The aim of this study was to investigate the photodynamic inactivation (PDI) effects of hypocrellin B (HB) on azole-sensitive and resistant C. albicans in vitro.

Antimicrobial photodynamic activity of toluidine blue encapsulated in mesoporous silica nanoparticles against Pseudomonas aeruginosa and Staphylococcus aureus.

In the present study, the antimicrobial and antibiofilm efficacy of toluidine blue (TB) encapsulated in mesoporous silica nanoparticles (MSN) was investigated against Pseudomonas aeruginosa and Staphylococcus aureus treated with antimicrobial photodynamic therapy (aPDT) using a red diode laser 670 nm wavelength, 97.65 J cm radiant exposure, 5 min). Physico-chemical techniques (UV-visible (UV-vis) absorption, photoluminescence emission, excitation, and FTIR) and high-resolution transmission electron mi...

Hypericin inclusion complexes encapsulated in liposomes for antimicrobial photodynamic therapy.

The naturally occurring anthraquinone derivative hypericin is a highly potent photosensitiser. Several in vitro studies show high phototoxicity of the pigment towards gram-positive bacteria. Nevertheless, the highly lipophilic nature and poor bioavailability prevent its application in daily clinical practice thus leading to a limited therapeutic value of hypericin. Liposomal encapsulation could help overcome these limitations and would make hypericin available for daily clinical practice. The use of liposom...

Self-Assembled Oxaliplatin(IV) Prodrug-Porphyrin Conjugate for Combinational Photodynamic and Chemotherapy.

Nanomedicine has emerged as a promising strategy for effective cancer treatment. A useful approach is to develop carrier-free nanodrugs via facile supramolecular self-assembly process. To achieve high therapeutic effect, integrating photodynamic therapy with chemotherapy has been sought after. In this work, we designed a nanocarrier (PEG-Por-CD: oxliPt(IV)-ada) assembled with oxaliplatin prodrug (oxliPt(IV)-ada) and porphyrin photosensitizer (PEG-Por-CD) through host-guest interaction to achieve stimulus-re...

Scope of antimicrobial photodynamic therapy in Orthodontics and related research: A review.

The aim of the present study was to comprehensively review indexed literature regarding the potential role of antimicrobial photodynamic therapy (aPDT) in Orthodontics.

Effect of curcumin-mediated photodynamic therapy on Streptococcus mutans and Candida albicans: A systematic review of in vitro studies.

There is still no systematized evidence in the literature regarding the combination of curcumin to improve the effects of antimicrobial photodynamic therapy (aPDT) on complex oral biofilms. Therefore, the objective of this review was to systematically assess the antimicrobial effect of curcumin-mediated aPDT on the vitality of biofilms of microorganisms Streptococcus mutans and Candida albicans.

Exploring the Galleria mellonella model to study antifungal photodynamic therapy.

Antimicrobial photodynamic therapy (aPDT) shows antimicrobial activity on yeast of the genus Candida. In photodynamic therapy, the depth at which the light penetrates the tissue is extremely important for the elaboration of the treatment. The aim of this study was to evaluate the action of aPDT on experimental candidiasis and the laser impact in the tissue using Galleria mellonella as the infection model.

Curcumin loaded nanoparticles as efficient photoactive formulations against gram-positive and gram-negative bacteria.

The constant increase in multi-resistant bacterial strains and the decline in the number of newly approved antibiotics necessitate the development of alternative approaches to antibiotic treatment. In this study, a modern alternative approach to antibiotic therapy using photosensitiser encapsulated polymeric nanoparticles is presented. Cationic nanoparticles were prepared using a biodegradable and biocompatible polymer poly (lactic-co-glycolic acid), a stabiliser poly (vinyl alcohol) and chitosan. Dynamic l...

Feasibility of transgingival laser irradiation for antimicrobial photodynamic therapy.

Diode lasers are commonly used for antimicrobial photodynamic therapy (aPDT). This study aimed to assess the feasibility of transgingival laser irradiation during aPDT and evaluate whether the photosensitizer can be activated.

O-evolving and ROS-Activable nanoparticles for treatment of multi-drug resistant Cancer by combination of photodynamic therapy and chemotherapy.

Herein, a novel nano-system IF7-ROSPCNP, which is O-evolving and reactive oxygen species (ROS)-activable, was developed for enhancing the combination chemotherapy and photodynamic therapy (PDT). The nanoparticles composed of photosensitizers (disulfonated meso-tetraphenylporphine, TPPS2a) and catalase in the inner core, doxorubicin (DOX) in the polymeric shell and functionalized on its surface with IF7 peptide, which specially bind to annexin 1. As confirmed that the structure of IF7-ROSPCNP was able to rem...

Synergistic antibacterial activity of gold nanoparticles caused by apoptosis-like death.

Metal nanoparticles are promising materials for the management of infectious diseases as known to have various antimicrobial activities in pathogenic microorganisms. Among them, gold nanoparticles (AuNPs) are used in a wide range of fields such as photodynamic therapy, molecular diagnostics, and drug delivery because of their unique physicochemical properties. However, little is known about the synergistic antibacterial activity and mechanism of AuNPs on pathogenic bacteria.

Poly(lactide- co-glycolide) Nanoparticles for Prolonged Therapeutic Efficacy of Esculentin-1a-Derived Antimicrobial Peptides against Pseudomonas aeruginosa Lung Infection: in Vitro and in Vivo Studies.

Due to their excellent in vitro activity against multidrug resistant bacteria, antimicrobial peptides (AMPs) hold promise for treatment of Pseudomonas aeruginosa lung infections in cystic fibrosis (CF) sufferers. In this work, poly(lactide- co-glycolide) (PLGA) nanoparticles for lung delivery of AMPs deriving from the frog-skin esculentin-1a, namely, Esc(1-21) and Esc(1-21)-1c (Esc peptides), were successfully developed. Improved peptide transport through artificial CF mucus and simulated bacterial extracel...

Adjunctive antimicrobial photodynamic therapy to conventional chemo-mechanical debridement of infected root canal systems: A systematic review and meta-analysis.

To investigate the efficacy of antimicrobial photodynamic therapy (aPDT) adjunctive to conventional chemo-mechanical debridement of root canal system in patients with endodontic infections.

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