and melanoma in humans. Ultraviolet irradiation directly damages DNA, causing the formation of cyclobutane pyrimidine dimers and pyrimidine (6–4) pyrimidone photoproducts. Cyclobutane pyrimidine dimers specifically are responsible for the vast majority of C→T mutations induced by UV exposure. The underl...
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Evidences showing ultraviolet-B radiation-induced damage of DNA in cyanobacteria and its detection by PCR assay Impact of ultraviolet-B radiation in causing the damages to the DNA of the cyanobacterium, Anabaena strain BT2 has been investigated. Exposure of genomic D... A Kumar,MB Tyagi,PN Jha...
which identifies and eliminates damaged DNA segments, serves as one of the main procedures [47,48]. Humans and plants can undergo the NER repair process [49]. During NER, the DNA strands on either side of the area of harm are cut by an endonuclease...
(UVC) exposure kills bacteria, molds, protozoa, yeasts, and viruses on the surfaces of household and personal objects, eliminating over 99% of surface microbes. Exposure to UVC damages microbial DNA by triggering adjacent thymine molecules to dimerize, thereby disrupting DNA and RNA replication and...
extensive review of epidemiologic studies and analysis of gene mutations indicate that sun exposure may be the key risk factor in the onset of non-melanoma skin cancer as well as melanoma.; In this thesis project, the possible role of sunscreen in prevention of sun-induced DNA damages was ...
The stability of the polyether impression material appeared to be affected by the disinfection method used, as is evident from the variations in the mean values on the Y-axis. These differences across the data points highlight the significant impact of disinfection choice on the material’s ...
(UVA). UVA is the part of natural sunlight which damages unprotected skin and can penetrate through windows, and even through some clothes. It causes skin to age prematurely by turning on skin digesting enzymes called collagenases. These enzymes eat away at the natural collagen, causing the ...
A current threat to the marine ecosystem is the high level of solar ultraviolet radiation (UV). Large whales have recently been shown to suffer sun-induced skin damage from continuous UV exposure. Genotoxic consequences of such exposure remain unknown fo
(DNA unwinding andthyminedimers). Results show a time- and dosage-dependent influence of UV-B radiation on the mortality and the sublethal parameter, i.e., genotoxic effects (DNA damages). The impact of low dosages of UV-B indicates an important ecological threat concerning ecosystem integrity...