Unlocking the Power of Light on the Skin: A Comprehensive Review on Photobiomodulation

International Journal of Molecular Sciences, Journal Year: 2024, Volume and Issue: 25(8), P. 4483 - 4483

Published: April 19, 2024

Photobiomodulation (PBM) is a procedure that uses light to modulate cellular functions and biological processes. Over the past decades, PBM has gained considerable attention for its potential in various medical applications due non-invasive nature minimal side effects. We conducted narrative review including articles about photobiomodulation, LED therapy or low-level laser their on dermatology published over last 6 years, encompassing research studies, clinical trials, technological developments. This highlights mechanisms of action underlying PBM, interaction with chromophores activation intracellular signaling pathways. The evidence from trials experimental studies evaluate efficacy practice summarized special emphasis dermatology. Furthermore, advancements technology, such as novel sources treatment protocols, are discussed context optimizing therapeutic outcomes improving patient care. underscores promising role approach broad applicability. Despite need further develop standard holds great addressing wide range conditions enhancing modern healthcare practice.

Language: Английский

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Printable Photonic Materials and Devices for Smart Healthcare

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 5, 2025

Photonic materials possess tunable optical properties and have been widely utilized for healthcare applications. These enable the detection of physical physiological bio-signals via modulated output characteristics, such as wavelength shifts, fluorescence emission, light scattering. When further synthesized into functional photonic inks, multimodal devices epidermal, minimally invasive, implantable bio-sensing can be constructed in facile printable manners. This review first introduces different geometries their unique properties. To feasible fabrication multi-functional biosensing versatile platforms, synthesis inks as-printed are then illustrated. Subsequently, advances breakthroughs to construct integrated systems wearable applications displayed, especially sensing facilitate personalized remote healthcare. Finally, challenges achieving mechanical stability, eliminated degradation, enhanced biocompatibility dynamic biological environments, scalable production discussed, along with prospects toward reliable intelligent

Language: Английский

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Introduction

Engineering materials, Journal Year: 2025, Volume and Issue: unknown, P. 3 - 16

Published: Jan. 1, 2025

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Fully Implantable and Retrievable Upconversion Waveguides for Photodynamic Therapy in Deep Tissue

Advanced Optical Materials, Journal Year: 2023, Volume and Issue: 11(19)

Published: Aug. 17, 2023

Abstract The clinical administration of biophotonic approaches, such as photodynamic therapy (PDT), is impeded by the low penetration visible light in biological tissues. cooperation infrared (IR) with deeper and implantable IR‐to‐visible upconversion materials devices establishes an effective strategy to generate deep tissue. In this work, a wirelessly powered waveguide‐based source reported for PDT‐based vivo cancer treatments Combining microscale device arrays biocompatible waveguide, implant exhibits enhanced IR transmission environments generates upconverted red emission target region at depth >10 mm. illumination activates photosensitizer 5‐aminolevulinic acid (5‐ALA)‐based PDT treatment, inducing massive apoptosis (>60% cell death) tumor cells. After implanted tumor‐bearing mice, waveguides enable chronic operation more than two weeks reveal ideal anti‐tumor efficacies process. Finally, waveguide can be retrieved from tissue, leaving minimal traces after treatments. Such represents prospective technique realize optical‐based modulations medical within body.

Language: Английский

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Miniature wireless LED-device for photodynamic-induced cell pyroptosis

Photodiagnosis and Photodynamic Therapy, Journal Year: 2024, Volume and Issue: 47, P. 104209 - 104209

Published: May 9, 2024

The inability of visible light to penetrate far through biological tissue limits its use for phototherapy and photodiagnosis deep-tissue sites disease. This is unfortunate because many dyes are excellent photosensitizers photocatalysts that can induce a wide range photochemical processes, including photogeneration reactive oxygen species. One potential solution bring the source closer site disease by using miniature implantable LED. With this goal in mind, we fabricated wireless LED-based device (volume 23 mm

Language: Английский

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Influence of chromium concentration on the structural, optical, magnetical, and thermal properties of ZnS nanocrystals

Chalcogenide Letters, Journal Year: 2024, Volume and Issue: 21(9), P. 747 - 755

Published: Sept. 1, 2024

Pure ZnS and Zn1-xCrxS nanoparticles were successfully prepared using the coprecipitation method, where x represents concentration (x = 0.00, 0.10, 0.05). There are many analytical methods used, such as X-ray diffraction (XRD), scanning electron microscopy (SEM), Spectroscopy of energy dispersive (EDS). The magnetism structure catalysts was investigated spectrophotometry (VSM), thermogravimetric analysis (TGA), differential thermal (DTA). studies determine nanocrystal arrangement size microcrystals. As seen in SEM analysis, particles agglomerated. coordination sulfur ions around zinc examined FTIR analysis. band gap Cr-doped sample increases. Photoluminescence spectroscopy showed that violet emission 424 nm could be attributed to excitation process electrons from low conduction valence intermediate atoms. front amplitude doped nanocrystals remains constant regardless amount Cr present. results show replaced by dilute Cr3+ ions. exhibits diamagnetic properties under hightemperature conditions. these materials improved doping process, making them suitable for applications.

Language: Английский

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Automated optical system of integrated photostimulation of the human nervous system

Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2019, Journal Year: 2024, Volume and Issue: unknown, P. 8 - 8

Published: Dec. 16, 2024

This article illustrates the method and optical system of integrated photostimulation human nervous system, which forms therapeutic effect electromagnetic fields through eye system. In this work are consider directions application stimulation structures due to formation influence by flows with different radiation frequencies. A detailed description operation proposed provides opportunities for creation new hardware techniques.

Language: Английский

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Propagation loss in polyfluorene waveguides due to nanometer-roughness at their interfaces, studied by amplified spontaneous emission measurements

Japanese Journal of Applied Physics, Journal Year: 2023, Volume and Issue: 63(2), P. 02SP02 - 02SP02

Published: Oct. 4, 2023

Abstract The propagation loss in single-mode asymmetric waveguides due to interface nanometer-roughness was studied using amplified spontaneous emission (ASE) measurements. Poly(9,9-dioctylfluorene) (F8) used as the organic gain medium and structure of waveguide quartz glass substrate/F8/air. measured at ASE wavelength (447 nm) amorphous F8, surface roughness substrate F8 an atomic force microscope. losses with different slab thicknesses were good agreement those calculated analytical expression for interfaces. results presented herein will be useful design high-performance lasers optoelectronic integration systems.

Language: Английский

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