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Zhu Z, Xu Y, Guo Y, Liu R, Chang M, Wang X. Antioxidant interaction between α-tocopherol and γ-oryzanol in HepG2 cells. Food Funct 2024; 15:992-1003. [PMID: 38179649 DOI: 10.1039/d3fo03727d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
Minor constituents exhibit certain antioxidant interactions in vitro, and the effects in different media are different. However, it is not clear whether there are antioxidant interactions in cells after digestion and absorption. We utilized the cellular antioxidant evaluation model in HepG2 cells to study the antioxidant interaction between α-tocopherol and γ-oryzanol, and the interaction mechanism of a binary mixture was also illustrated. A cellular antioxidant assay (CAA) model and a combined index (CI) method were firstly used to explore the antioxidant activity and interaction of the binary mixture in HepG2 cells. The CAA value was positively correlated with the single addition concentration, while the results displayed a biphasic tendency with increasing concentrations of the binary mixture. The combination of TO11 (1 μg mL-1 α-tocopherol and 10 μg mL-1 γ-oryzanol) showed the greatest antioxidant activity and synergistic effect, and the maximum CAA value reached up to 94.84 ± 4.2. Then the mechanism of the synergistic antioxidant effect of the binary mixture was explained from three aspects including cellular uptake, intracellular reactive oxygen species (ROS) level and endogenous enzyme activity. The results demonstrated that the antioxidant interaction of the binary mixture in cells was related to cellular uptake of minor constituents, and the combination of TO11 exerted a synergistic effect by scavenging ROS and up-regulating glutathione peroxidase (GSH-Px) activity, resulting in the strongest cellular antioxidant activity. This study throws light on the nature of antioxidant interaction between minor constituents, which may contribute to the development of related functional foods and rational dietary collocation.
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Affiliation(s)
- Zhu Zhu
- State Key Laboratory of Food Science and Technology, International Joint Research Laboratory for Lipid Nutrition and Safety, School of Food Science and Technology, Jiangnan, University, 1800 Lihu Road, Wuxi, 214122, Jiangsu Province, PR China.
| | - Ying Xu
- State Key Laboratory of Food Science and Technology, International Joint Research Laboratory for Lipid Nutrition and Safety, School of Food Science and Technology, Jiangnan, University, 1800 Lihu Road, Wuxi, 214122, Jiangsu Province, PR China.
| | - Yiwen Guo
- State Key Laboratory of Food Science and Technology, International Joint Research Laboratory for Lipid Nutrition and Safety, School of Food Science and Technology, Jiangnan, University, 1800 Lihu Road, Wuxi, 214122, Jiangsu Province, PR China.
| | - Ruijie Liu
- State Key Laboratory of Food Science and Technology, International Joint Research Laboratory for Lipid Nutrition and Safety, School of Food Science and Technology, Jiangnan, University, 1800 Lihu Road, Wuxi, 214122, Jiangsu Province, PR China.
| | - Ming Chang
- State Key Laboratory of Food Science and Technology, International Joint Research Laboratory for Lipid Nutrition and Safety, School of Food Science and Technology, Jiangnan, University, 1800 Lihu Road, Wuxi, 214122, Jiangsu Province, PR China.
| | - Xingguo Wang
- State Key Laboratory of Food Science and Technology, International Joint Research Laboratory for Lipid Nutrition and Safety, School of Food Science and Technology, Jiangnan, University, 1800 Lihu Road, Wuxi, 214122, Jiangsu Province, PR China.
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In vitro digestion of binary mixture of α-tocopherol and γ-oryzanol in oil-in-water emulsion: Changes in stability and antioxidant potential. Food Res Int 2022; 159:111606. [DOI: 10.1016/j.foodres.2022.111606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 06/26/2022] [Accepted: 06/28/2022] [Indexed: 11/23/2022]
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Rabiej-Kozioł D, Krzemiński MP, Szydłowska-Czerniak A. Synthesis of Steryl Hydroxycinnamates to Enhance Antioxidant Activity of Rapeseed Oil and Emulsions. MATERIALS 2020; 13:ma13204536. [PMID: 33066089 PMCID: PMC7600874 DOI: 10.3390/ma13204536] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 10/05/2020] [Accepted: 10/09/2020] [Indexed: 01/01/2023]
Abstract
In recent years, steryl esters have found potential applications in food, pharmaceutical and cosmetic industries. Therefore, three hydroxycinnamate steryl esters (HSEs): β-sitosteryl sinapate (β-SSA), β-sitosteryl caffeate (β-SCA), and β-sitosteryl ferulate (β-SFA) were synthesized by chemical approach and their antioxidant activity (AA) were analyzed by 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azinobis-(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) assays. The values of inhibitory concentration (IC50) of each ester needed to inhibit 50% of the DPPH radical (IC50(DPPH) = 238.9, 78.3, 290.0 µmol/L for β-SSA, β-SCA, and β-SFA, respectively) and ABTS radical cation (IC50(ABTS) = 174.6, 106.7, 206.0 µmol/L for β-SSA, β-SCA, and β-SFA, respectively) were estimated and compared with antioxidant potential of phenolic acids. Moreover, the effect of HSEs addition in the concentrations range between 0.01% and 0.5% on the AA of refined rapeseed oil, mayonnaise and margarine was evaluated. Chemical structures of the synthesized HSEs and their concentrations strongly affect the AA of fat products. Oil and emulsions supplemented with higher concentrations of HSEs had significantly higher AA than control samples. Unfortunately, lower concentrations of HSEs (0.01% and 0.02%) did not increase the AA of fat products. However, steryl phenolates added in higher amounts can be considered as potential antioxidants delaying the oxidation processes of studied fats.
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Kurtys E, Eisel ULM, Hageman RJJ, Verkuyl JM, Broersen LM, Dierckx RAJO, de Vries EFJ. Anti-inflammatory effects of rice bran components. Nutr Rev 2018. [DOI: 10.1093/nutrit/nuy011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Affiliation(s)
- Ewelina Kurtys
- Department of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, RB Groningen, The Netherlands
| | - Ulrich L M Eisel
- Department of Molecular Neurobiology, GELIFES, University of Groningen, Groningen, The Netherlands
| | | | | | | | - Rudi A J O Dierckx
- Department of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, RB Groningen, The Netherlands
| | - Erik F J de Vries
- Department of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, RB Groningen, The Netherlands
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Perez-Ternero C, Werner CM, Nickel AG, Herrera MD, Motilva MJ, Böhm M, Alvarez de Sotomayor M, Laufs U. Ferulic acid, a bioactive component of rice bran, improves oxidative stress and mitochondrial biogenesis and dynamics in mice and in human mononuclear cells. J Nutr Biochem 2017; 48:51-61. [DOI: 10.1016/j.jnutbio.2017.06.011] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 06/05/2017] [Accepted: 06/19/2017] [Indexed: 10/19/2022]
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Development of a Modular Ratiometric Fluorescent Probe for the Detection of Extracellular Superoxide. Chemistry 2017; 23:4765-4769. [DOI: 10.1002/chem.201700563] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Indexed: 02/05/2023]
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7
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Perez-Ternero C, Claro C, Parrado J, Herrera MD, Alvarez de Sotomayor M. Rice bran enzymatic extract reduces atherosclerotic plaque development and steatosis in high-fat fed ApoE-/- mice. Nutrition 2016; 37:22-29. [PMID: 28359358 DOI: 10.1016/j.nut.2016.12.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 12/01/2016] [Accepted: 12/15/2016] [Indexed: 12/15/2022]
Abstract
OBJECTIVE Rice bran is a by-product of rice milling and is rich in bioactive molecules such as γ-oryzanol, phytosterols, and tocotrienols. The rice bran enzymatic extract (RBEE) previously showed vessel remodeling prevention and lipid-lowering, antioxidant, anti-inflammatory, and antiapoptotic activities. The aim of this study was to identify RBEE hypolipidemic mechanisms and to study the effects of RBEE on the progression of atherosclerosis disease and linked vascular dysfunction and liver steatosis in apolipoprotein E-knockout (ApoE-/-) mice fed low- or high-fat (LFD, HFD, respectively) and cholesterol diets. METHODS ApoE-/- mice were fed LFD (13% kcal) or HFD (42% kcal) supplemented or not supplemented with 1 or 5% RBEE (w/w) for 23 wk. Then, serum, aorta, liver, and feces were collected and flash frozen for further analysis. RESULTS RBEE supplementation of HFD improved serum values by augmenting high-density lipoprotein cholesterol and preventing total cholesterol and aspartate aminotransferase increase. 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase activity was attenuated (1 and 5% RBEE) and cholesterol excretion increased (5% RBEE). Diet supplementation with 5% RBEE reduced plaque development regardless of the diet. In HFD-fed mice, both doses of RBEE reduced lipid deposition and macrophage infiltration in the aortic sinus and downregulated intercellular adhesion molecule-1 and vascular cell adhesion molecule-1 expression. None of these effects was observed in mice fed LFD. Liver steatosis was reduced by RBEE supplementation of LFD (1% RBEE) and HFD (1 and 5% RBEE) and nuclear peroxisome proliferator-activated receptor-α expression upregulated in the HDF 5% RBEE group. CONCLUSION Regular consumption of RBEE-supplemented HFD reduced plaque development and liver steatosis by decreasing inflammation and hyperlipidemia through an HMG-CoA reductase activity and lipid excretion-related mechanism.
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Affiliation(s)
| | - Carmen Claro
- Department of Pharmacology, School of Pharmacy, University of Seville, Seville, Spain
| | - Juan Parrado
- Department of Biochemistry, School of Pharmacy, University of Seville, Seville, Spain
| | - Maria Dolores Herrera
- Department of Pharmacology, School of Pharmacy, University of Seville, Seville, Spain
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Moroz E, Lee SH, Yamada K, Halloy F, Martínez-Montero S, Jahns H, Hall J, Damha MJ, Castagner B, Leroux JC. Carrier-free Gene Silencing by Amphiphilic Nucleic Acid Conjugates in Differentiated Intestinal Cells. MOLECULAR THERAPY. NUCLEIC ACIDS 2016; 5:e364. [PMID: 27648924 PMCID: PMC5056993 DOI: 10.1038/mtna.2016.69] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 07/20/2016] [Indexed: 12/14/2022]
Abstract
Nucleic acid therapy can be beneficial for the local treatment of gastrointestinal diseases that currently lack appropriate treatments. Indeed, several oligonucleotides (ONs) are currently progressing through clinical trials as potential treatments for inflammatory bowel diseases. However, due to low uptake of carrier-free ONs by mucosal cells, strategies aimed at increasing the potency of orally administered ONs would be highly desirable. In this work, we explored the silencing properties of chemically modified and highly resistant ONs derivatized with hydrophobic alkyl chain on intestinal epithelial cells. We screened a set of lipid-ON conjugates for the silencing of model Bcl-2 mRNA and selected 2'-deoxy-2'-fluoro-arabinonucleic acid modified ON bearing docosanoyl moiety (L-FANA) as the most potent candidate with lowest toxicity. The efficacy of L-FANA conjugate was preserved in simulated intestinal fluids and in the inverted transfection setup. Importantly, L-FANA conjugate was able to downregulate target gene expression at both mRNA and protein levels in a difficult-to-transfect polarized epithelial cell monolayer in the absence of delivery devices and membrane disturbing agents. These findings indicate that lipid-ON conjugates could be promising therapeutics for the treatment of intestinal diseases as well as a valuable tool for the discovery of new therapeutic targets.
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Affiliation(s)
- Elena Moroz
- Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical Sciences, ETH Zurich, Zurich, Switzerland
| | - Soo Hyeon Lee
- Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical Sciences, ETH Zurich, Zurich, Switzerland
| | - Ken Yamada
- Department of Chemistry, McGill University, Montreal, Canada
| | - François Halloy
- Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical Sciences, ETH Zurich, Zurich, Switzerland
| | | | - Hartmut Jahns
- Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical Sciences, ETH Zurich, Zurich, Switzerland
| | - Jonathan Hall
- Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical Sciences, ETH Zurich, Zurich, Switzerland
| | - Masad J Damha
- Department of Chemistry, McGill University, Montreal, Canada
| | - Bastien Castagner
- Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical Sciences, ETH Zurich, Zurich, Switzerland.,Department of Pharmacology & Therapeutics, McGill University, Montreal, Canada
| | - Jean-Christophe Leroux
- Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical Sciences, ETH Zurich, Zurich, Switzerland
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Zhu D, Sánchez-Ferrer A, Nyström L. Antioxidant Activity of Individual Steryl Ferulates from Various Cereal Grain Sources. JOURNAL OF NATURAL PRODUCTS 2016; 79:308-16. [PMID: 26790041 DOI: 10.1021/acs.jnatprod.5b00880] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Steryl ferulates (SFs) are a subclass of bioactive lipids contributing to the health-promoting effects of whole grains. Most related studies focus on γ-oryzanol, a SF mixture from rice, since individual steryl ferulates are not commercially available. There is little evidence that individual SFs may vary in their bioactivity. The aim of this study was to evaluate the antioxidant activity of eight individual SFs by determining their radical scavenging capacity. Additional molecular properties of the individual SFs were determined by molecular simulation in order to identify correlations with their antioxidant activities. Our study demonstrates that individual SFs exhibit 1,1-diphenyl-2-picrylhydrazyl radical, hydroxyl radical, and superoxide anion radical scavenging abilities with subtle differences that were highly dependent on the kind of reaction taking place. The grouping of SFs by principle component analysis was mainly attributed to molecular properties, not antioxidant activities. Solvation energy was significantly correlated with some experimental observations. To our knowledge, this is the first study to evaluate the antioxidant activity of eight individual steryl ferulates from different sources. Results of this work will provide better insight into the antioxidant activity of SFs and the health benefits of whole grains.
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Affiliation(s)
- Dan Zhu
- Institute of Food, Nutrition and Health, Department of Health Sciences and Technology, ETH Zurich , Schmelzbergstrasse 9, CH-8092 Zurich, Switzerland
| | - Antoni Sánchez-Ferrer
- Institute of Food, Nutrition and Health, Department of Health Sciences and Technology, ETH Zurich , Schmelzbergstrasse 9, CH-8092 Zurich, Switzerland
| | - Laura Nyström
- Institute of Food, Nutrition and Health, Department of Health Sciences and Technology, ETH Zurich , Schmelzbergstrasse 9, CH-8092 Zurich, Switzerland
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