Results 51 to 60 of about 17,303 (261)

Photodynamic inactivation of influenza virus as a potential alternative for the control of respiratory tract infections

Journal of Photochemistry and Photobiology, 2021
Over the last centuries, the influenza virus has been the cause of one of the deadliest and most concerning respiratory tract infections. Besides being annually responsible for thousands of deaths worldwide, it's capable of originating pandemics that can
Rafael T. Aroso, Giusi Piccirillo, Zoe A. Arnaut, Andreia C.S. Gonzalez, Fábio M.S. Rodrigues, Mariette M. Pereira   +5 more
doaj   +1 more source

Photodynamic Decontamination of Food: Assessing Surface Challenges Against Listeria monocytogenes

Microorganisms
Listeria monocytogenes is a foodborne pathogen of significant concern. While it typically causes mild, self-limiting gastroenteritis, it poses a much higher threat to immunocompromised individuals and pregnant women, where it may lead to miscarriage ...
Anabel Cenit, Jun Liu, Michael Fefer, Kristjan Plaetzer   +3 more
doaj   +1 more source

Sublethal Photodynamic Treatment Does Not Lead to Development of Resistance

Frontiers in Microbiology, 2018
A promising new alternative approach for eradication of antibiotic-resistant strains is to expose microbes to photosensitizers, which upon illumination generate reactive oxygen species.
Rawan Al-Mutairi, Artak Tovmasyan, Ines Batinic-Haberle, Ludmil Benov   +3 more
doaj   +1 more source

Tailoring the Properties of Functional Materials With N‐Oxides

Advanced Functional Materials, EarlyView.
The properties of materials bearing N‐oxide groups are often dominated by the polar N+─O− bond. It provides hydrophilicity, selective ion‐binding, electric conductivity, or antifouling properties. Many of the underlying mechanisms have only recently been discovered, and the interest in N‐oxide materials is rapidly growing.
Timo Friedrich, Michelle Kobus, Shirin Mesgarha, Erica Moretto, Laurens Grosche, Wolfgang Maison   +5 more
wiley   +1 more source

Photodynamic effectiveness of laser diode combined with ozone to reduce STaphylicoccus aureus biofilm with exogenous chlorophyll of Dracaena angustifolia leaves

Biomedical Photonics, 2019
Photodynamic inactivation is an effective treatment that uses light irradiation, photosensitizer and oxygen. The aim of this study was to determine photodynamic effectiveness of laser diode combined with ozone to reduce Staphylococcus aureus biofilm ...
S. D. Astuti, N. D. Drantantiyas, A. P. Putra, P. S. Puspita, A. Syahrom, S. Suhariningsih   +5 more
doaj   +1 more source

Upconversion Nanoparticles Embedded Photonic Contact Lens for Transepithelial Corneal Crosslinking Using Hyaluronate – Riboflavin Conjugate

Advanced Functional Materials, EarlyView.
A minimally invasive, transepithelial corneal cross‐linking (TE‐CXL) approach is presented using upconversion nanoparticles (UCNPs)‐loaded contact lenses (UCLs), after topical delivery of hyaluronate–riboflavin conjugates. The NIR‐to‐UV/blue light conversion by UCNPs in a UCL can activate riboflavin for TE‐CXL, resulting in the biomechanical strength ...
Gibum Lee, Inhoo Choi, Anara Molkenova, Yengwoo Son, Seungmin Yang, Mina Kwon, Tae‐Im Kim, Ki Su Kim, Sei Kwang Hahn   +8 more
wiley   +1 more source

Efficacy of Pulsed 405-nm LEDs for antimicrobial photodynamic inactivation : effects of intensity, frequency, and duty cycle [PDF]

, 2016
Objective: This study investigates possible advantages in pulsed over continuous 405-nm LED-light for bacterial inactivation and energy efficiency.
Gillespie, Jonathan B., Given, Martin J., Judd, Martin D., MacGregor, Scott J., MacLean, Michelle, Timoshkin, Igor V., Wilson, Mark P.   +6 more
core   +1 more source

Photodynamic inactivation of oropharyngeal Candida strains

Phytomedicine, 2014
Oropharyngeal candidiasis (OPC) is an infection frequent in immunocompromised patients. Photodynamic therapy is an alternative to conventional treatments, based on the utilization of compounds that inhibit or kill microorganisms only under the effect of light, process known as Photodynamic Inactivation (PDI).
Postigo, Agustina, Bulacio, Lucía, Sortino, Maximiliano Andrés   +2 more
openaire   +3 more sources

Unveiling Aggregation‐Induced Singlet Fission in Push–Pull Diketopyrrolopyrrole Water Dispersed Nanoaggregates and Thin Films

Advanced Functional Materials, EarlyView.
Aggregates of diketopyrrolopyrrole dipolar and quadrupolar systems exhibit panchromatic absorption spectra extending in the entire visible range. Upon aggregation in water and in the solid state, their fluorescence is almost completely quenched and their singlet excited state lifetime is significantly shortened.
Roberto Cantoni, Martina Alebardi, Eliana Maria D'Amato, Charu Popli, Yuvraj Patil, Pietro Mancini, Alessandro Di Michele, Anna Spalletti, Rajneesh Misra, Theodore Goodson, Benedetta Carlotti   +10 more
wiley   +1 more source

Synthesis, Photophysical Characterization, and Photoinduced Antibacterial Activity of Methylene Blue-loaded Amino- and Mannose-Targeted Mesoporous Silica Nanoparticles

Molecules, 2015
Over the last 20 years, the number of pathogenic multi-resistant microorganisms has grown steadily, which has stimulated the search for new strategies to combat antimicrobial resistance. Antimicrobial photodynamic therapy (aPDT), also called photodynamic
Oriol Planas, Roger Bresolí-Obach, Jaume Nos, Thibault Gallavardin, Rubén Ruiz-González, Montserrat Agut, Santi Nonell   +6 more
doaj   +1 more source