BACKGROUND Oral 8-methoxypsoralen-UV-A (PUVA) and Narrowband UV-B (NB-UVB or UVB TL-01) are well established treatments for chronic plaque psoriasis but there is limited evidence regarding their respective efficacy. OBJECTIVES To prepare for evidence-based recommendations concerning the practical use of oral 8-methoxypsoralen-UV-A and Narrowband UV-B in psoriasis, a systematic review to asses...

Background: Treatment of vitiligo remains a challenge and there is no universal consensus about optimal treatment. Platelet rich plasma contains several growth factors being used as an effective treatment dermatological disorders. Now it clear that along with melanocytes, keratinocytes fibroblasts are also involved in pathogenesis vitiligo. The aim this study was to compare the effect narrowban...

The fate of ultraviolet-induced, thymine-containing dimers in the deoxyribonucleic acid (DNA) of Bacillus subtilis was investigated in both the wild type (UV(R)) and an ultraviolet light-sensitive (UV(S)) mutant. During incubation in the dark, dimers were excised from the DNA of the UV(R)B. subtilis, but remained in the DNA of the UV(S) mutant. About 40% of the excised dimers recovered in the w...