Results 161 to 170 of about 80,730 (306)

Spectroscopic analysis of bacterial photoreactivation

Photochemistry and Photobiology, Volume 101, Issue 2, Page 494-504, March/April 2025.
This study investigates the effectiveness of fluorescence and Raman spectroscopy in detecting bacterial photoreactivation. Fluorescence spectroscopy shows limitations, because the intense fluorescence of tryptophan and tyrosine masks fluorescence emitted by thymine molecules.
Keyvan Khosh Abady, Negar Karpourazar, Arjun Krishnamoorthi, Runze Li, Peter M. Rentzepis   +4 more
wiley   +1 more source

<i>Gynostemma pentaphyllum</i>-derived extracellular vesicles alleviate skin aging by destabilizing STING. [PDF]

Bioact Mater
Wang D, Duan S, Fan Y, Chen T, Hao Y, Liang Y, Ni J, Wang X, Shen X, Cao G, You Y, Liu Z, Xia H.   +12 more
europepmc   +1 more source

Immunomodulatory effects of photodynamic therapy for skin cancer: Potential strategies to improve treatment efficacy and tolerability

Photochemistry and Photobiology, EarlyView.
Photodynamic therapy (PDT) is a nonscarring treatment modality that is widely used for skin cancers and early squamous precursor lesions. PDT was previously thought to work primarily by killing cancer cells directly (via apoptosis or necrosis). However, more recent work indicates that a significant mechanism for PDT is the stimulation of anti‐cancer ...
Mark P. Ortenzio, Sanjay Anand, Jeffrey B. Travers, Edward V. Maytin, Craig A. Rohan   +4 more
wiley   +1 more source

Revealing the therapeutic potential of Laminaria japonica polysaccharides against cataract: evidence from transcriptomics, network pharmacology, and in vivo experiments. [PDF]

Int Ophthalmol
Liao P, Yang T, Lin L, Liang Y, Gan Q, Lan T, Liang H.   +6 more
europepmc   +1 more source

Exploring natural sunscreens: UVB protection and antioxidant properties in gadusol‐rich fish roes extracts

Photochemistry and Photobiology, EarlyView.
Gadusol‐rich extracts provide effective UVB protection and antioxidant activity in HaCaT cells and C. elegans, highlighting their potential as natural photochemoprotective agents for pharmaceutical and cosmetic applications. It also demonstrates remarkable in vitro antioxidant capacity and thermal stability over time.
Rocío Isla Naveira, Gabriela Hollmann, José María Monserrat, Ana Paula S. Votto, Julie Medeiros da Silveira, Andressa Mai Matsumoto, Lais Zortéa, Andy Joel Taipe Huisa, Agueda E. Massa, M. Sandra Churio   +9 more
wiley   +1 more source

Isaridin E Protects Against UVB-Induced Photoaging by Activating Wnt/β-Catenin Signaling Pathway and Alleviating Mitochondrial Dysfunction. [PDF]

Mar Drugs
Liu Y, Li W, Yang Z, Long H, Cai S, Sun C, Xiong Y, Zhang Y, Liu Y, Luo G, Chen S, Zhao T.   +11 more
europepmc   +1 more source

Alleviation of photoaging‐associated MMP upregulation, prostanoid biosynthesis, and cell cycle arrest with titanium dioxide, zinc oxide, and inorganic‐only (ZnO + TiO2) sunscreens

Photochemistry and Photobiology, EarlyView.
Inorganic sunscreens containing the UV filters titanium dioxide (TiO2) and/or zinc oxide (ZnO) alleviated various biomarkers of photoaging in human dermal fibroblasts, at a gene and protein level. The study provides novel insights that observe the impact of inorganic photoprotection through the molecular biology of skin.
Neil Dominic T. Pangilinan, Mohammad Shalbaf, Aline Souza, Bhaven Chavan, Mark A. Birch‐Machin   +4 more
wiley   +1 more source

UVB Upregulates Inflammatory Cytokines in Rosacea Cell Model by Promoting the Expression of TRPVs and TLR2. [PDF]

Immunotargets Ther
Xie Y, Hu Y, Huang J, Liu J, Zhang Q.
europepmc   +1 more source

Direct evidence of singlet molecular oxygen [O2 (1Δg)] production from UVA excited 6‐thioguanine

Photochemistry and Photobiology, EarlyView.
6‐Thioguanine (6‐TGua) is incorporated into DNA as a purine analogue, inhibiting cell replication. Patients treated with 6‐TGua are more prone to developing skin cancer due to the photoexcitation of 6‐TGua by UVA radiation (as illustrated in the Jablonski diagram). Upon exposure to UVA, the excited 6‐TGua generates 1O2.
André L. Lopes, Fernanda M. Prado, Helena C. Junqueira, Marisa H. G. Medeiros, Graziella E Ronsein, Jean Cadet, Paolo Di Mascio   +6 more
wiley   +1 more source

Curcumin induces and enhances the PARP1-mediated parthanatos in diffuse large B cell lymphoma. [PDF]

Oncol Lett
Wang Y, Qi R, Zhao X, Mei H, Qiu M, Liu F, Wang H.   +6 more
europepmc   +1 more source