2026-06-28T15:19:12Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/1051972025-03-18T12:26:01Zcom_20.500.14352_14col_20.500.14352_15

00925njm 22002777a 4500 dc Sánchez-Medina, Andrea author Redondo-Puente, Mónica author Dupak, Rudolf author Bravo-Clemente, Laura author Goya, Luis author Sarriá Ruiz, Beatriz Irene author 2023-01-11 Coffee presents beneficial health properties, including antiobesity effects. However, its effects on inflammation are controversial. Hydroxycinnamic acids are the main coffee phenolic bioactive compounds. In human bioavailability studies carried out with coffee, among the most abundant compounds found in urine and plasma were the colonic metabolites, dihydrocaffeic (DHCA), dihydroferulic (DHFA), and hydroxyhippuric (HHA) acids. To understand the hepato-protective potential of these three compounds, we tested whether treatment with realistic concentrations (0.5–10 µM) were effective to counteract inflammatory process and oxidative status induced by tumor necrosis factor α (TNF-α). First, we established a novel model of inflammation/oxidation using TNF-α and HepG2 cells. Afterwards, we evaluated the activity of DHCA, DHFA, and HHA against the inflammatory/oxidative challenge through the determination of the inflammatory mediators, interleukins (IL)-6, and IL-8 and chemokines, monocyte chemoattractant protein-1, and macrophage inflammatory protein-1, as well as the levels of biomarkers of oxidative stress, such as reactive oxygen species, reduced glutathione, and the antioxidant enzymes glutathione peroxidase and reductase. Results showed that all three compounds have a potential hepato-protective effect against the induced inflammatory/oxidative insult. Sánchez-Medina, A.; Redondo-Puente, M.; Dupak, R.; Bravo-Clemente, L.; Goya, L.; Sarriá, B. Colonic Coffee Phenols Metabolites, Dihydrocaffeic, Dihydroferulic, and Hydroxyhippuric Acids Protect Hepatic Cells from TNF-α-Induced Inflammation and Oxidative Stress. Int. J. Mol. Sci. 2023, 24, 1440. https://doi.org/10.3390/ijms24021440 1422-0067 10.3390/ijms24021440 https://hdl.handle.net/20.500.14352/105197 https://doi.org/10.3390/ijms24021440 https://www.mdpi.com/1422-0067/24/2/1440 Colonic Coffee Phenols Metabolites, Dihydrocaffeic, Dihydroferulic, and Hydroxyhippuric Acids Protect Hepatic Cells from TNF-α-Induced Inflammation and Oxidative Stress