Results 11 to 20 of about 80,730 (306)

Feasibility study for a possible therapy of bacterial keratitis by UVB irradiation

open access: yesCurrent Directions in Biomedical Engineering, 2023
Bacterial keratitis is a widespread disease in which bacteria have infected the cornea. This can lead to blindness and should be treated immediately after diagnosis. However, antibiotics do not reach pathogens inside the cornea.
Fischer Simone   +2 more
doaj   +1 more source

Irradiance-dependent UVB Photocarcinogenesis [PDF]

open access: yesScientific Reports, 2016
AbstractUltraviolet B (UVB) radiation from the sun may lead to photocarcinogenesis of the skin. Sunscreens were used to protect the skin by reducing UVB irradiance, but sunscreen use did not reduce sunburn episodes. It was shown that UVB-induced erythema depends on surface exposure but not irradiance of UVB. We previously showed that irradiance plays a
Cheng-Che E. Lan   +8 more
openaire   +2 more sources

Review of microbial touchscreen contamination for the determination of reasonable ultraviolet disinfection doses

open access: yesGMS Hygiene and Infection Control, 2021
Background: Touchscreens are usually microbially contaminated and can therefore act as fomites inside and outside healthcare environments. Due to the increasing use of such touchscreens and the growing awareness of infection risks, approaches that allow ...
Hessling, Martin   +2 more
doaj   +1 more source

Protective effects of Centella asiatica leaf extract cream on IL-1a expression and sunburn cells in BALB/c mice induced by UVB [PDF]

open access: yesScripta Medica
Background/Aim: UVB radiation can induce DNA damage in keratinocyte cells, leading to increased levels of reactive oxygen species (ROS) triggered by the release of proinflammatory cytokine IL-1a and apoptosis (sunburn) of keratinocyte cells.
Sari Libia   +2 more
doaj   +1 more source

The Effects of Ultraviolet Light on Anthocyanin Accumulation in the Adventitious Roots of Sedum wrightii (Crassulaceae) [PDF]

open access: yes, 2018
Several studies have supported the idea that anthocyanin accumulation may be a possible protection mechanism in plants against DNA damage caused by ultraviolet radiation (UV).
Gravatt, Dennis A.   +2 more
core   +2 more sources

Temporal trends in satellite-derived erythemal UVB and implications for ambient sun exposure assessment [PDF]

open access: yes, 2017
Ultraviolet radiation (UVR) has been associated with various health outcomes, including skin cancers, vitamin D insufficiency, and multiple sclerosis. Measurement of UVR has been difficult, traditionally relying on subject recall.
Brown, Heidi   +4 more
core   +3 more sources

Effect of a precision cryotherapy device with temperature adjustability on pigmentation

open access: yesIndian Journal of Dermatology, 2022
Background: Pigmentary skin disorders impair the quality of life, leading to the development of therapeutic modalities. However, these treatments should focus more on effectiveness and safety.
Mi Hee Kwack   +5 more
doaj   +1 more source

Jujube and green tea extracts protect human fibroblast cells against UVB-mediated photo damage and MMP-2 and MMP-9 production [PDF]

open access: yesAvicenna Journal of Phytomedicine, 2020
Objective: Oxidative stress and ultraviolet B (UVB) irradiation are known as principal inducers of DNA damage and modulators of gene expression in aging process and skin photoaging, which are associated with upregulation of matrix metalloproteinases ...
Zahra Abotorabi   +4 more
doaj   +1 more source

The Effect of Corncob (Zea mays) Extract Cream on the Number of Melanin Pigments of Guinea Pig Exposed to Ultraviolet

open access: yesBerkala Ilmu Kesehatan Kulit dan Kelamin (Periodical of Dermatology and Venerology), 2021
Background: Exposure to Ultraviolet B (UVB) rays on the skin causesmany problems, including pigmentation and aging effect. Hence, protection against it is needed.
Pasid Harlisa   +2 more
doaj   +1 more source

Anti-Photoaging Effect of Plant Extract Fermented with Lactobacillus buchneri on CCD-986sk Fibroblasts and HaCaT Keratinocytes

open access: yesJournal of Functional Biomaterials, 2020
Ultraviolet (UV) exposure triggers the abnormal production of reactive oxygen (ROS) species and the expression of matrix metalloproteinases (MMPs) that are responsible for photoaging.
Yun-Mi Kang   +7 more
doaj   +1 more source

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