We would like to comment on the three contributions in the Journal of the National Cancer Institute, Vol. 97, No. 3, February 2, 2005: · Kathleen M. Egan, Jeffrey A. Sosman, William J. Blot: Editorial: Sunlight and Reduced Risk of Cancer: Is the Real Story Vitamin D? (pp. 161-163) [1] · Marianne Berwick, Bruce K. Armstrong, Leah Ben-Porat, Judith Fine, Anne Kricker, Carey Eberle, Raymond Barnhi...

Solar radiation induces both acute and chronic responses in the skin. Sun burn, sun tan, generation of reactive oxygen species and immunosuppression are acute responses. Wrinkles, lentigines, post-inflammatory pigmentation are chronic damages. According to one study done in Japan, it was found out that the annual ultraviolet dose received by people living in Kagoshima was 1.6 times higher than ...

BACKGROUND One of the most important dermatologic side effects of doxycycline is photosensitivity. As doxycycline is important for malaria prophylaxis and malaria is mainly spread in countries with high sun radiation, special attention should be paid to this adverse effect. While there are many publications on the phototoxicity of tetracyclines in general, only a few exist focusing on doxycycli...

INTRODUCTION Solar ultraviolet radiation (UV) at the earth's surface has Trees influence the amount of solar UV radiation that many implications for human health. Erythema is caused prireaches pedestrians. A three-dimensional model was demarily by the ultraviolet-B (UV-B) portion of the solar spec"eloped to predict the ultraviolet-B (UV-B) irradiance trum (280-315 nm) and to a lesser extent by ...

The hydrogen Lyman-alpha (Ly−α) plays a dominant role in the radiative energy transport in the lower transition region, and is important for the studies of transition-region structure as well as solar wind origin. We investigate the Ly−α profiles obtained by the Solar Ultraviolet Measurements of Emitted Radiation spectrograph (SUMER) on the SOHO (Solar and Heliospheric Observatory) spacecraft i...

BACKGROUND Participation in outdoor alpine sports has been increasing over the last decade. Ultraviolet exposure levels for these activities can be extreme owing to the venue altitudes. The purpose of this study was to measure the levels of UV-A and UV-B radiation exposure incurred by performance skiers in a typical alpine venue and to determine the need for protection in that environment. OB...

We discuss the move from reporting damaging UV radiation in terms of UVB to the now widely accepted erythemally weighted UV radiation (UV(Ery)) and the UV Index (UVI). The relationship between these quantities is given: to a good approximation, it is found that UVB(280-315 nm)= 7.55 [times] UV(Ery). In terms of the UV Index, the estimated UVB(280-315 nm) in units of W m(-2) is 18.9 times the UV...

The p70 S6 kinase (p70) is a Ser/Thr kinase that plays an important role in cell growth, transformation, and the transition of the cell cycle in mammalian cells. Because UV radiation has been reported to induce activation of p70, which is believed to play some role in the carcinogenic effects of sun exposure, the present study investigated the signaling pathways involved in this activation indu...

Sun protecting clothing is clothing designed for sun protection and is producted from the fabric rated for its level ultraviolet (UV) protection. Some textiles and fabrics emloyed in the use of sun protective clothing may be pre-treated with UV inhibiting ingredients during manufacture to enhance their UV blocking capacitiy.