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Fariña E, Daghero H, Bollati-Fogolín M, Boido E, Cantero J, Moncada-Basualto M, Olea-Azar C, Polticelli F, Paulino M. Antioxidant Capacity and NF-kB-Mediated Anti-Inflammatory Activity of Six Red Uruguayan Grape Pomaces. Molecules 2023; 28:molecules28093909. [PMID: 37175319 PMCID: PMC10180250 DOI: 10.3390/molecules28093909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 04/28/2023] [Accepted: 05/01/2023] [Indexed: 05/15/2023] Open
Abstract
Grape pomaces have a wide and diverse antioxidant phenolics composition. Six Uruguayan red grape pomaces were evaluated in their phenolics composition, antioxidant capacity, and anti-inflammatory properties. Not only radical scavenging methods as DPPH· and ABTS·+ were employed but also ORAC and FRAP analyses were applied to assess the antioxidant potency of the extracts. The antioxidant reactivity of all extracts against hydroxyl radicals was assessed with ESR. The phenol profile of the most bioactive extract was analyzed by HPLC-MS, and a set of 57 structures were determined. To investigate the potential anti-inflammatory activity of the extracts, Nuclear Factor kappa-B (NF-κB) modulation was evaluated in the human colon cancer reporter cell line (HT-29-NF-κB-hrGFP). Our results suggest that Tannat grapes pomaces have higher phenolic content and antioxidant capacity compared to Cabernet Franc. These extracts inhibited TNF-alpha mediated NF-κB activation and IL-8 production when added to reporter cells. A molecular docking study was carried out to rationalize the experimental results allowing us to propose the proactive interaction between the NF-κB, the grape extracts phenols, and their putative anti-inflammatory bioactivity. The present findings show that red grape pomace constitutes a sustainable source of phenolic compounds, which may be valuable for pharmaceutical, cosmetic, and food industry applications.
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Affiliation(s)
- Emiliana Fariña
- Área Bioinformática, DETEMA, Facultad de Química, Universidad de la República, Gral. Flores 2124, C.P. 11800, C.C. 1157, Montevideo 11600, Uruguay
| | - Hellen Daghero
- Cell Biology Unit, Institut Pasteur Montevideo, Mataojo 2020, Montevideo 11400, Uruguay
| | | | - Eduardo Boido
- Laboratorio de Enología, DETEMA, Facultad de Química, Universidad de la República, Gral. Flores 2124, C.P. 11800, C.C. 1157, Montevideo 11600, Uruguay
| | - Jorge Cantero
- Área Bioinformática, DETEMA, Facultad de Química, Universidad de la República, Gral. Flores 2124, C.P. 11800, C.C. 1157, Montevideo 11600, Uruguay
- Medical Research Center, Facultad de Ciencias de la Salud, Universidad Nacional del Este, Minga Guazú 7420, Paraguay
| | - Mauricio Moncada-Basualto
- Programa Institucional de Fomento a la Investigación, Desarrollo e Innovación, Universidad Tecnológica Metropolitana, San Joaquín 8940577, Chile
| | - Claudio Olea-Azar
- Facultad de Cs. Químicas y Farmacéuticas, Universidad de Chile, Dr. Carlos Lorca Tobar 964, Región Metropolitana, Santiago de Chile 8380494, Chile
| | - Fabio Polticelli
- Department of Sciences, University Roma Tre, Viale G. Marconi 446, 00146 Rome, Italy
- National Institute of Nuclear Physics, Roma Tre Section, Via della Vasca Navale 84, 00146 Rome, Italy
| | - Margot Paulino
- Área Bioinformática, DETEMA, Facultad de Química, Universidad de la República, Gral. Flores 2124, C.P. 11800, C.C. 1157, Montevideo 11600, Uruguay
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