@Article{dbt_mods_00051275, author = {Wiegand, Cornelia and Hipler, Uta-Christina and Elsner, Peter and Tittelbach, J{\"o}rg}, editor = {Venihaki, Maria}, title = {Keratinocyte and Fibroblast Wound Healing In Vitro Is Repressed by Non-Optimal Conditions but the Reparative Potential Can Be Improved by Water-Filtered Infrared A}, journal = {Biomedicines: open access journal}, year = {2021}, month = {Nov}, day = {30}, publisher = {MDPI}, address = {Basel}, volume = {9}, number = {12}, pages = {1--34}, keywords = {wound healing; scratch assay; keratinocyte; fibroblast; UV-B; wIRA (water-filtered infrared A); pro-inflammatory cytokines; heat shock protein; desmoglein; collagen}, abstract = {It is a general goal to improve wound healing, especially of chronic wounds. As light therapy has gained increasing attention, the positive influence on healing progression of water-filtered infrared A (wIRA), a special form of thermal radiation, has been investigated and compared to the detrimental effects of UV-B irradiation on wound closure in vitro. Models of keratinocyte and fibroblast scratches help to elucidate effects on epithelial and dermal healing. This study further used the simulation of non-optimal settings such as S. aureus infection, chronic inflammation, and anti-inflammatory conditions to determine how these affect scratch wound progression and whether wIRA treatment can improve healing. Gene expression analysis for cytokines ( IL1A , IL6 , CXCL8 ), growth ( TGFB1 , PDGFC ) and transcription factors ( NFKB1 , TP53 ), heat shock proteins ( HSP90AA1 , HSPA1A , HSPD1 ), keratinocyte desmogleins ( DSG1 , DSG3 ), and fibroblast collagen ( COL1A1 , COL3A1 ) was performed. Keratinocyte and fibroblast wound healing under non-optimal conditions was found to be distinctly reduced in vitro. wIRA treatment could counteract the inflammatory response in infected keratinocytes as well as under chronic inflammatory conditions by decreasing pro-inflammatory cytokine gene expression and improve wound healing. In contrast, in the anti-inflammatory setting, wIRA radiation could re-initiate the acute inflammatory response necessary after injury to stimulate the regenerative processes and advance scratch closure.}, issn = {2227-9059}, doi = {10.3390/biomedicines9121802}, url = {https://www.db-thueringen.de/receive/dbt_mods_00051275}, url = {http://uri.gbv.de/document/gvk:ppn:1786285649}, url = {http://uri.gbv.de/document/gvk:ppn:750370483}, url = {https://doi.org/10.3390/biomedicines9121802}, file = {:https://www.db-thueringen.de/servlets/MCRFileNodeServlet/dbt_derivate_00055553/biomedicines-09-01802.pdf:PDF}, language = {en} }