title: Effect of tannic acid, resveratrol and its derivatives, on oxidative damage and apoptosis in human neutrophils.
abstract: In this study we compared the antioxidant and DNA protective activity of tannic acid and stilbene derivatives, resveratrol, 3,5,4(')-trimethoxystilbene (TMS) and pterostilbene in human neutrophils stimulated to oxidative burst by 12-O-tetradecanoyl-phorbol-13-acetate (TPA) in relation to apoptosis induction. All polyphenols within the concentration range 1-100 μM reduced the intracellular ROS and H2O2 production in the TPA-stimulated cells. Tannic acid was the most effective polyphenol in protection against DNA damage induced by TPA. In the resting neutrophils resveratrol and to lesser extent other polyphenols increased DNA damage and increased the level of p53. Pretreatment of the TPA-stimulated cells with tannic acid or stilbenes led to the induction of apoptosis. The most significant effect was observed as a result of treatment with TMS and resveratrol. These compounds appeared the most effective inducers of p53 in the TPA-challenged neutrophils, what may suggest that pro-apoptotic activity of these stilbenes might be related to p53 activation. Overall, the results of our present study demonstrate that tannic acid and stilbenes modulate the ROS production, ultimately leading to cell apoptosis in human neutrophils stimulated to oxidative burst. In resting neutrophils they exhibit pro-oxidant activity, which is accompanied by p53 induction.
authors.affiliation: Department of Pharmaceutical Biochemistry, Poznan University of Medical Sciences, Święcickiego 4, Poznań, Poland.
authors.forename: Małgorzata
authors.initials: M
authors.lastname: Zielińska-Przyjemska
authors.affiliation: Department of Pharmaceutical Biochemistry, Poznan University of Medical Sciences, Święcickiego 4, Poznań, Poland.
authors.forename: Ewa
authors.initials: E
authors.lastname: Ignatowicz
authors.affiliation: Department of Pharmaceutical Biochemistry, Poznan University of Medical Sciences, Święcickiego 4, Poznań, Poland.
authors.forename: Violetta
authors.initials: V
authors.lastname: Krajka-Kuźniak
authors.affiliation: Department of Pharmaceutical Biochemistry, Poznan University of Medical Sciences, Święcickiego 4, Poznań, Poland. Electronic address: baerw@ump.edu.pl.
authors.forename: Wanda
authors.initials: W
authors.lastname: Baer-Dubowska
mesh_terms: D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000009:adverse effects / Q000378:metabolism; D000975:Antioxidants / Q000009:adverse effects / Q000378:metabolism; D017209:Apoptosis / Q000187:drug effects; D015415:Biomarkers / Q000378:metabolism; D002273:Carcinogens / Q000037:antagonists & inhibitors / Q000633:toxicity; D002478:Cells, Cultured; D004249:DNA Damage; D006801:Humans; D006861:Hydrogen Peroxide / Q000037:antagonists & inhibitors / Q000378:metabolism; D018375:Neutrophil Activation / Q000187:drug effects; D009504:Neutrophils / Q000166:cytology / Q000187:drug effects / Q000276:immunology / Q000378:metabolism*; D016877:Oxidants / Q000009:adverse effects* / Q000378:metabolism; D018384:Oxidative Stress / Q000187:drug effects; D017382:Reactive Oxygen Species / Q000037:antagonists & inhibitors / Q000378:metabolism; D000077185:Resveratrol; D013267:Stilbenes / Q000009:adverse effects* / Q000378:metabolism; D013634:Tannins / Q000009:adverse effects* / Q000378:metabolism; D013755:Tetradecanoylphorbol Acetate / Q000037:antagonists & inhibitors / Q000633:toxicity; D016159:Tumor Suppressor Protein p53 / Q000819:agonists / Q000378:metabolism
chemical_list: C497286:3,4',5-trimethoxystilbene; D000894:Anti-Inflammatory Agents, Non-Steroidal; D000975:Antioxidants; D015415:Biomarkers; D002273:Carcinogens; D016877:Oxidants; D017382:Reactive Oxygen Species; D013267:Stilbenes; C495901:TP53 protein, human; D013634:Tannins; D016159:Tumor Suppressor Protein p53; C107773:pterostilbene; D006861:Hydrogen Peroxide; D013755:Tetradecanoylphorbol Acetate; D000077185:Resveratrol
keywords: Apoptosis; DNA damage; Neutrophils; Stilbene derivatives; Tannic acid