A non-dimer type of DNA damage does not appear to play a major role in either UVA or UVB mutagenesis. Therefore, the previously reported increasing mutagenicity per dimer with increasing wavelengths cannot be due to non-dimer DNA damage. Differences in the cellular response to UVA and UVB, ...
UVB rays are shorter wavelengths. These shorter UV rays are connected with sunburns and other immediate forms of skin damage. While UVA and UVB rays may impact the skin in different ways, direct exposure to either form of UV radiation has the potential to damage skin on the cellular level....
H. Ikehata, S. Higashi, S. Nakamura, et al., Action spectrum analysis of UVR genotoxicity for skin: the border wavelengths between UVA and UVB can bring serious mutation loads to skin, J. Invest. Dermatol. 133 (2013) 1850-1856.
UVA rays have longer wavelengths, while UVB rays have shorter wavelengths. Both types can harm the skin, but they affect it differently; UVA rays penetrate deeper into the skin and can cause aging, while UVB rays are primarily responsible for sunburns and increase the risk of skin cancer. ...
UVA测试与UVB测试的关系主要在于反映了不同波长的紫外线对粉末涂料的不同影响,一般来说,UVA测试更能模拟自然环境中的紫外线,因为UVA占阳光中紫外线的90%以上,而UVB只占5%左右。 UVA测试更能反映粉末涂料的长期耐候性能,因为UVA能穿透到粉末涂料的深层,造成粉末涂料的老化、变色、开裂等现象。UVB测试更能反映粉末涂料...
The responses of the autochthonous soil and aquatic organism, Pseudomonas aeruginosa to UV radiation wavelengths (UVA, 320-400 nm, and UVB, 280-320 nm) has been investigated in this study. P. aeruginosa recA mutants were found to be more sensitive to both UVA and UVB radiation than were the...
UVB radiation (wavelengths from 290 nm to 320 nm) causes sunburn,tanning, photoaging, and skin cancer induction, while UVA radiation(wavelengths of 320 nm to 400 nm) is associated with the immediatetanning reaction, photoaging, and tumor promotion. ...
Most of UVB and all of UVC (wavelengths below 280 nm) are removed by the ozone layer and these shorter wavelengths are not present in incident sunlight. UVA is classified as “probably carcinogenic to humans” by WHO IARC [1] although, unlike UVC and UVB, it is absorbed poorly by ...
You already know about SPF, UVB, sunburn and its relationship with skin cancer… but what about UVA protection? Newer research has really highlighted the…
and the unclear role of specific UV wavelengths in the development of melanoma have renewed interest in defining the adverse effects of UVA exposure. Like UVB, UVA can cause nonmelanoma skin cancers, but the tumors take longer to develop and require much larger doses of light. The mutations ...