Effects of ultraviolet radiation on Langerhans cells

Effects of ultraviolet radiation on Langerhans cells

Research on penetration of ultraviolet (UV) radiation into human skin shows that about 20% of UVA and 10% of UVB can reach the basal layer of the epidermis. As a consequence, Langerhans cells (LCs), located in suprabasal layers, are subject to the influence of the two types of UV radiation. This phenomenon leads to quantitative and qualitative alterations in LCs, including reduction in their nu...

Ultraviolet Radiation Effects on Ehrlich Ascites Tumor Cells

A flying spot ultraviolet microscope, employing a fast scan and pulsed operation of the raster, has been used to induce radiation damage in ascites tumor slide cultures, and to study by time-lapse cinematography the progressive stages of cell damage. The cells observed came from a strain (EF(7)) of the Ehrlich ascites carcinoma. Irradiated cells were found to show a characteristic syndrome of d...

The Bystander Effects of Ultraviolet Radiation and Silver Nanoparticles on the H2AX gene expression in TK6 Cells

Introduction: The radiation induced bystander effect (BSE) is the induction of biological changes in unexposed cells, by signals transmitted from bystander cells that cause the spread of radiation toxicity to adjacent or far tissues. In addition, reactive oxygen species (ROS) and reactive nitrogen species (RNS) such as cytokines are involved in mediating mechanisms in bystande...

Effects of Ultraviolet Radiation

Conference organizer: Henry W. Lim, MD Participants: Barbara A. Gilchrest, MD, Kevin D. Cooper, MD, Heike A. Bischoff-Ferrari, MD, MPH, Darrell S. Rigel, MD, W. Howard Cyr, PhD, Sharon Miller, MSEE, Vincent A. DeLeo, MD, Tim K. Lee, PhD, Catherine A. Demko, PhD, Martin A. Weinstock, MD, PhD, Antony Young, PhD, Laura Saul Edwards, Timothy M. Johnson, MD, and Stephen P. Stone, MD Detroit, Michiga...

Solar ultraviolet radiation effects on biological systems.