Background: Plaque-type palmoplantar psoriasis (PPTP) is a chronic recalcitrant dermatosis with treatment modalities ranging through topical, phototherapy or systemic. Phototherapy options include various forms of ultraviolet B (UVB) and ultraviolet A with prior psoralen sensitization (PUVA). Currently, few comparative studies have been reported.
Purpose: To compare Broad-Band UVB (BB-UVB) versus paint PUVA (p-PUVA) in regard to efficacy and safety in the treatment of PPTP.
Methods: A retrospective non-randomized cohort study comprised of all the patients with PPTP treated in our phototherapy centre during 2010-2012, either with BB-UVB or p-PUVA.
Results: Among the 248 patients included in this study, 122 received BB-UVB and 126 followed p-PUVA treatment. About 36 (30%) and 53 (42%) had complete remission, 29 (24%) and 59 (47%) responded partially and 57 (47%) and 14 (11%) patients did not improve with BB-UVB and p-PUVA, respectively. The odds ratio for remission (p-PUVA: BB-UVB) was 7.9. Duration of remission was 21.9 ± 1.34 months for p-PUVA and 16.75 ± 1.83 months for BB-UVB.
Conclusion: Both BB-UVB and p-PUVA are good therapeutic options for PPTP. P-PUVA emerges as the superior treatment modality, yielding a better and more extended response. BB-UVB represents a feasible alternative in patients with milder disease or possible contraindications for p-PUVA.
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http://dx.doi.org/10.3109/09546634.2015.1093588 | DOI Listing |
Spectrochim Acta A Mol Biomol Spectrosc
January 2025
Department of Physics, RTM Nagpur University, Nagpur 440033, India.
Preparation of LiZrF:Ce and LiZrF:Ce,Gd phosphors is described. Data on luminescence characteristics are presented. Hydrothermal route was employed for the synthesis.
View Article and Find Full Text PDFAstrobiology
August 2024
Chemistry Institute, Universidade de São Paulo, São Paulo, Brazil.
The district of Perus, located in the city of São Paulo, Brazil, is renowned for its weathered granitic-pegmatitic masses, which harbor a significant number of uraniferous minerals that contribute to ionizing radiation levels up to 20 times higher than the background levels. In this study, aseptically collected mineral samples from the area were utilized to isolate 15 microorganisms, which were subjected to pre-screening tests involving UV-C and UV-B radiation. The microorganisms that exhibited the highest resistance to ultraviolet (UV) radiation were selected for the construction of survival curves for UV-C, broad-band UV-B, and solar simulation resistance testing.
View Article and Find Full Text PDFBiomedicines
November 2023
Research Institute, McGill University Health Centre, McGill University, Montreal, QC H4A 3J1, Canada.
Retrotransposons have played an important role in evolution through their transposable activity. The largest and the only currently active human group of mobile DNAs are the retrotransposons. The ectopic expression of has been correlated with genomic instability.
View Article and Find Full Text PDFAIMS Microbiol
May 2023
Ulm University of Applied Sciences, Department of Medical Engineering and Mechatronics, Biotech-Lab, Albert Einstein-Allee 55, D-89081 Ulm, Germany.
To minimize health risks, surrogates are often employed to reduce experiments with pathogenic microorganisms and the associated health risk. Due to structural similarities between the enveloped RNA-viruses SARS-CoV-2 and Phi6, the latter has been established as a nonpathogenic coronavirus surrogate for many applications. However, large discrepancies in the UV log-reduction doses between SARS-CoV-2 and Phi6 necessitate the search for a better surrogate for UV inactivation applications.
View Article and Find Full Text PDFInorg Chem
July 2023
State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China.
Current ultraviolet (UV) light sources are dominated by blacklights that contain mercury vapor. Improper disposal or accidental breakage of these lamps can lead to serious pollution. Phosphor-converted light-emitting diodes (pc-UV-LEDs) have the potential to replace these mercury-containing lamps, making them more environmentally friendly.
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