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Visvanathan R, Houghton MJ, Barber E, Williamson G. Structure-function relationships in (poly)phenol-enzyme binding: Direct inhibition of human salivary and pancreatic α-amylases. Food Res Int 2024; 188:114504. [PMID: 38823880 DOI: 10.1016/j.foodres.2024.114504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Revised: 05/04/2024] [Accepted: 05/07/2024] [Indexed: 06/03/2024]
Abstract
(Poly)phenols inhibit α-amylase by directly binding to the enzyme and/or by forming starch-polyphenol complexes. Conventional methods using starch as the substrate measure inhibition from both mechanisms, whereas the use of shorter oligosaccharides as substrates exclusively measures the direct interaction of (poly)phenols with the enzyme. In this study, using a chromatography-based method and a short oligosaccharide as the substrate, we investigated the detailed structural prerequisites for the direct inhibition of human salivary and pancreatic α-amylases by over 50 (poly)phenols from the (poly)phenol groups: flavonols, flavones, flavanones, flavan-3-ols, polymethoxyflavones, isoflavones, anthocyanidins and phenolic acids. Despite being structurally very similar (97% sequence homology), human salivary and pancreatic α-amylases were inhibited to different extents by the tested (poly)phenols. The most potent human salivary α-amylase inhibitors were luteolin and pelargonidin, while the methoxylated anthocyanidins, peonidin and petunidin, significantly blocked pancreatic enzyme activity. B-ring methoxylation of anthocyanidins increased inhibition against both human α-amylases while hydroxyl groups at C3 and B3' acted antagonistically in human salivary inhibition. C4 carbonyl reduction, or the positive charge on the flavonoid structure, was the key structural feature for human pancreatic inhibition. B-ring glycosylation did not affect salivary enzyme inhibition, but increased pancreatic enzyme inhibition when compared to its corresponding aglycone. Overall, our findings indicate that the efficacy of interaction with human α-amylase is mainly influenced by the type and placement of functional groups rather than the number of hydroxyl groups and molecular weight.
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Affiliation(s)
- Rizliya Visvanathan
- Department of Nutrition, Dietetics and Food, Monash University, BASE Facility, 264 Ferntree Gully Road, Notting Hill, VIC 3168, Australia; Victorian Heart Institute, Monash University, Victorian Heart Hospital, 631 Blackburn Road, Clayton, VIC 3168, Australia
| | - Michael J Houghton
- Department of Nutrition, Dietetics and Food, Monash University, BASE Facility, 264 Ferntree Gully Road, Notting Hill, VIC 3168, Australia; Victorian Heart Institute, Monash University, Victorian Heart Hospital, 631 Blackburn Road, Clayton, VIC 3168, Australia
| | - Elizabeth Barber
- Department of Nutrition, Dietetics and Food, Monash University, BASE Facility, 264 Ferntree Gully Road, Notting Hill, VIC 3168, Australia; Victorian Heart Institute, Monash University, Victorian Heart Hospital, 631 Blackburn Road, Clayton, VIC 3168, Australia
| | - Gary Williamson
- Department of Nutrition, Dietetics and Food, Monash University, BASE Facility, 264 Ferntree Gully Road, Notting Hill, VIC 3168, Australia; Victorian Heart Institute, Monash University, Victorian Heart Hospital, 631 Blackburn Road, Clayton, VIC 3168, Australia.
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2
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Herrera-Balandrano DD, Chai Z, Cui L, Zhao X, Zhao X, Li B, Yang Y, Huang W. Gastrointestinal fate of blueberry anthocyanins in ferritin-based nanocarriers. Food Res Int 2024; 176:113811. [PMID: 38163716 DOI: 10.1016/j.foodres.2023.113811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 11/27/2023] [Accepted: 12/02/2023] [Indexed: 01/03/2024]
Abstract
Blueberries contain an important amount of anthocyanins, which possess numerous biological properties. Nonetheless, the potential applications of anthocyanins may be constrained due to their limited stability and bioavailability. This study aimed to evaluate the stability and absorption of blueberry anthocyanin extracts (BAE) and anthocyanin standards (malvidin and cyanidin glycosides) when encapsulated using ferritin (FR) nanocarriers or a combination of FR and sodium alginate (SA) under simulated gastrointestinal conditions and Caco-2 cell monolayers. These results indicate that the use of FR nanocarriers resulted in an extended-release of anthocyanins during simulated digestion. Particularly, it was observed that after a period of 2 h in the intestinal phase, the anthocyanin concentration in BAE was greater (38.01 μg/mL, P < 0.05) when FR nanocarriers were employed, in comparison to untreated BAE (4.12 μg/mL). Furthermore, outcomes obtained from the Caco-2 cell monolayer assay revealed that FR-anthocyanin encapsulation resulted in substantially higher (P < 0.05) absorption rates ranging from 25.09 to 44.59 % compared to untreated anthocyanins (10.61-22.95 %). These findings provide evidence of an innovative approach for enhancing the stability and bioavailability of blueberry anthocyanins.
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Affiliation(s)
- Daniela D Herrera-Balandrano
- School of Life Sciences, Nantong University, Nantong 226019, China; Institute of Agro-Product Processing, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China.
| | - Zhi Chai
- Institute of Agro-Product Processing, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China.
| | - Li Cui
- Institute of Agro-Product Processing, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China.
| | - Xingyu Zhao
- Institute of Agro-Product Processing, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China.
| | - Xuan Zhao
- Institute of Agro-Product Processing, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China.
| | - Bin Li
- College of Food Science, Shenyang Agricultural University, Liaoning 110866, China.
| | - Yiyun Yang
- Zhejiang Lanmei Technology Co., Ltd, Zhuji 311899, China.
| | - Wuyang Huang
- Institute of Agro-Product Processing, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
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3
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Li F, Zeng K, Ming J. Lowering glycemic levels via gastrointestinal tract factors: the roles of dietary fiber, polyphenols, and their combination. Crit Rev Food Sci Nutr 2023:1-37. [PMID: 37966135 DOI: 10.1080/10408398.2023.2278169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2023]
Abstract
Dietary fiber (DF) and polyphenols (DP) are typical blood sugar-lowering components, and both play distinct yet interconnected roles in exerting their blood sugar-lowering effects. We comprehensively summarized the single and combined effects of DF and DP on blood glucose homeostasis through regulating the relevant factors in the upper gastrointestinal tract (UGT) and lower gastrointestinal tract (LGT). In the UGT, DF slowed down glucose metabolism by enhancing digesta viscosity and hindering enzyme-substrate interaction. DP primarily targeted enzymes and substrates. When combined, DP enhanced the adsorption capacity of DF for glucose. DF weakened DP's inhibitory effect on enzymes. Both DF and DP disrupted glucose intestinal uptake via physical or genomic modulation, but the co-consumption of DF and DP demonstrated a lower inhibitory effect on glucose uptake than DP alone. In the LGT, DF and DP showed synergistic or antagonistic effects on gut microbiota. Remarkably, whole foods exhibited potent prebiotic effects due to their compound-rich matrix, potentially enhancing glucose homeostasis and expanding dietary options for glucose regulation research.
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Affiliation(s)
- Fuhua Li
- College of Food Science, Southwest University, Chongqing, People's Republic of China
- Research Group Food Chem and Human Nutrition, Department of Food Technology, Safety and Health, Faculty of Bioscience Engineering, Ghent University, Gent, Belgium
- Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing, People's Republic of China
| | - Kaifang Zeng
- College of Food Science, Southwest University, Chongqing, People's Republic of China
- Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing, People's Republic of China
| | - Jian Ming
- College of Food Science, Southwest University, Chongqing, People's Republic of China
- Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing, People's Republic of China
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4
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Tu P, Zheng X, Niu H, Chen Z, Wang X, Wu L, Tang Q. Characterizing the Gut Microbial Metabolic Profile of Mice with the Administration of Berry-Derived Cyanidin-3-Glucoside. Metabolites 2023; 13:818. [PMID: 37512525 PMCID: PMC10386377 DOI: 10.3390/metabo13070818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 06/12/2023] [Accepted: 06/18/2023] [Indexed: 07/30/2023] Open
Abstract
Dietary modulation of the gut microbiota has recently received considerable attention. It is well established that consumption of berries confers a number of health benefits. We previously reported that a black raspberry (BRB)-rich diet effectively modulates the gut microbiota. Given the role of anthocyanins in the health benefits of berries, coupled with interactions of gut microbial metabolites with host health, the objective of this follow-up study was to further characterize the profile of functional metabolites in the gut microbiome modulated by anthocyanins. We utilized a berry-derived classic anthocyanin, cyanidin-3-glucoside (C3G), combined with a mouse model to probe C3G-associated functional metabolic products of gut bacteria through a mass spectrometry-based metabolomic profiling technique. Results showed that C3G substantially changed the gut microbiota of mice, including its composition and metabolic profile. A distinct metabolic profile in addition to a variety of key microbiota-related metabolites was observed in C3G-treated mice. Microbial metabolites involved in protein digestion and absorption were differently abundant between C3G-treated and control mice, which may be linked to the effects of berry consumption. Results of the present study suggest the involvement of the gut microbiota in the health benefits of C3G, providing evidence connecting the gut microbiota with berry consumption and its beneficial effects.
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Affiliation(s)
- Pengcheng Tu
- Department of Environmental Health, Zhejiang Provincial Center for Disease Control and Prevention, 3399 Binsheng Road, Hangzhou 310051, China
| | - Xiaodong Zheng
- Department of Food Science and Nutrition, Zhejiang University, Hangzhou 310058, China
| | - Huixia Niu
- Department of Environmental Health, Zhejiang Provincial Center for Disease Control and Prevention, 3399 Binsheng Road, Hangzhou 310051, China
| | - Zhijian Chen
- Department of Environmental Health, Zhejiang Provincial Center for Disease Control and Prevention, 3399 Binsheng Road, Hangzhou 310051, China
| | - Xiaofeng Wang
- Department of Environmental Health, Zhejiang Provincial Center for Disease Control and Prevention, 3399 Binsheng Road, Hangzhou 310051, China
| | - Lizhi Wu
- Department of Environmental Health, Zhejiang Provincial Center for Disease Control and Prevention, 3399 Binsheng Road, Hangzhou 310051, China
| | - Qiong Tang
- College of Standardization, China Jiliang University, Hangzhou 310018, China
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Preparation of hypoglycemic anthocyanins from mulberry (Fructus mori) fruits by ultrahigh pressure extraction. INNOV FOOD SCI EMERG 2022. [DOI: 10.1016/j.ifset.2022.103255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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The Effect of Ferulic Acid-Grafted Chitosan (FA-g-CS) on the Transmembrane Transport of Anthocyanins by sGLT1 and GLUT2. Foods 2022; 11:3299. [PMCID: PMC9601927 DOI: 10.3390/foods11203299] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
This work aims to evaluate the effect of ferulic acid-grafted chitosan (FA-g-CS) on the interaction between anthocyanin (ANC) and sGLT1/GLUT2 and their functions in ANC transmembrane transport using Caco-2 cells. The transmembrane transport experiments of ANC showed its low transport efficiency (Papp < 10−6 cm/s), whereas the phenomenon of a significantly rise in anthocyanins transport efficiency was observed with the incubation of FA-g-CS (p < 0.05). In order to investigate the mechanism of FA-g-CS improving ANC transmembrane transport, Caco-2 cells were transfected with small interfering RNA (siRNA) specific for transporters sGLT1 and GLUT2, and incubated with ANC, FA-g-CS, or their combination. Subsequently, Western blot analyses and immunofluorescence staining were carried out to monitor the intracellular sGLT1 and GLUT2 levels. These siRNA-transfected cells, incubated with compounds, indicate that sGLT1 and GLUT2 participated in the ANC transmembrane transport and that FA-g-CS, ANC, or their combination enhance sGLT1/GLUT2 expression. In particular, Caco-2 cells incubated with both FA-g-CS and ANC show significantly increased sGLT1 or GLUT2 expression (>80%) compared with exclusively using FA-g-CS or ANC (<60%). Molecular docking results demonstrate that there is a good binding between FA-g-CS/ANC and sGLT1 or GLUT2. These results highlight that FA-g-CS promotes the transmembrane transport of ANC by influencing the interaction between ANC and sGLT1/GLUT2; the interaction between FA-g-CS and ANC could be another key factor that improves the bioavailability of ANC.
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West Mexico Berries Modulate α-Amylase, α-Glucosidase and Pancreatic Lipase Using In Vitro and In Silico Approaches. Pharmaceuticals (Basel) 2022; 15:ph15091081. [PMID: 36145302 PMCID: PMC9501167 DOI: 10.3390/ph15091081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 08/23/2022] [Accepted: 08/23/2022] [Indexed: 11/17/2022] Open
Abstract
The objective was to evaluate the antioxidant and biological potential of eight freeze-dried berry varieties of southern Jalisco using in silico and in vitro approaches. Fourteen tentative phenolic compounds were identified in berries by ESI-QToF, including anthocyanins, phenolic acids, flavanols and flavonols. In silico assays of phytochemicals in the berry inhibiting enzymes related to obesity and diabetes showed predicted binding energy interactions (ranging from −5.4 to −9.3 kcal/mol). Among the cultivars, antioxidant potential for DPPH IC50 ranged from 1.27 to 3.40 mg/mL, ABTS IC50 from 2.26 to 7.32 mg/mL and nitric oxide (NO) inhibition IC50 from 4.26 to 11.07 mg/mL. The potential to inhibit α-amylase IC50 ranged from 4.02 to 7.66 mg/mL, α-glucosidase IC50 from 0.27 to 4.09 mg/mL, lipase IC50 from 1.30 to 4.82 mg/mL and DPP-IV IC50 from 1.36 to 3.31 mg/mL. Blackberry cultivars from the southern Jalisco region showed outstanding biological potential compared to other evaluated berries and could be used in the formulation of functional foods in the prevention of noncommunicable diseases.
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Törrönen R, Järvinen S, Kolehmainen M. Postprandial glycemic responses to a high-protein dairy snack and energy-enriched berry snacks in older adults. Clin Nutr ESPEN 2022; 51:231-238. [DOI: 10.1016/j.clnesp.2022.08.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 08/22/2022] [Indexed: 11/25/2022]
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9
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Rosales TKO, Fabi JP. Nanoencapsulated anthocyanin as a functional ingredient: Technological application and future perspectives. Colloids Surf B Biointerfaces 2022; 218:112707. [PMID: 35907354 DOI: 10.1016/j.colsurfb.2022.112707] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 07/08/2022] [Accepted: 07/14/2022] [Indexed: 12/30/2022]
Abstract
Anthocyanins are an important group of phenolic compounds responsible for pigmentation in several plants, and regular consumption is associated with a reduced risk of several diseases. However, the application of anthocyanins in foods represents a challenge due to molecular instability. The encapsulation of anthocyanins in nanostructures is a viable way to protect from the factors responsible for degradation and enable the industrial application of these compounds. Nanoencapsulation is a set of techniques in which the bioactive molecules are covered by resistant biomaterials that protect them from chemical and biological factors during processing and storage. This review comprehensively summarizes the existing knowledge about the structure of anthocyanins and molecular stability, with a critical analysis of anthocyanins' nanoencapsulation, the main encapsulating materials (polysaccharides, proteins, and lipids), and techniques used in the formation of nanocarriers to protect anthocyanins. Some studies point to the effectiveness of nanostructures in maintaining anthocyanin stability and antioxidant activity. The main advantages of the application of nanoencapsulated anthocyanins in foods are the increase in the nutritional value of the food, the addition of color, the increase in food storage, and the possible increase in bioavailability after oral ingestion. Nanoencapsulation improves stability for anthocyanin, thus demonstrating the potential to be included in foods or used as dietary supplements, and current limitations, challenges, and future directions of anthocyanins' have also been discussed.
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Affiliation(s)
- Thiécla Katiane Osvaldt Rosales
- Department of Food Science and Experimental Nutrition, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - João Paulo Fabi
- Department of Food Science and Experimental Nutrition, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, SP, Brazil; Food Research Center (FoRC), São Paulo, SP, Brazil; Food and Nutrition Research Center (NAPAN), University of São Paulo, São Paulo, SP, Brazil.
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10
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Dietary patterns and diabetes risk in Southern Chinese in Guangxi Zhuang autonomous region. Int J Diabetes Dev Ctries 2022. [DOI: 10.1007/s13410-022-01077-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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11
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Olivera-Nappa Á, Contreras S, Tevy MF, Medina-Ortiz D, Leschot A, Vigil P, Conca C. Patient-Wise Methodology to Assess Glycemic Health Status: Applications to Quantify the Efficacy and Physiological Targets of Polyphenols on Glycemic Control. Front Nutr 2022; 9:831696. [PMID: 35252308 PMCID: PMC8892255 DOI: 10.3389/fnut.2022.831696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 01/25/2022] [Indexed: 11/13/2022] Open
Abstract
A growing body of evidence indicates that dietary polyphenols could be used as an early intervention to treat glucose-insulin (G-I) dysregulation. However, studies report heterogeneous information, and the targets of the intervention remain largely elusive. In this work, we provide a general methodology to quantify the effects of any given polyphenol-rich food or formulae over glycemic regulation in a patient-wise manner using an Oral Glucose Tolerance Test (OGTT). We use a mathematical model to represent individual OGTT curves as the coordinated action of subsystems, each one described by a parameter with physiological interpretation. Using the parameter values calculated for a cohort of 1198 individuals, we propose a statistical model to calculate the risk of dysglycemia and the coordination among subsystems for each subject, thus providing a continuous and individual health assessment. This method allows identifying individuals at high risk of dysglycemia—which would have been missed with traditional binary diagnostic methods—enabling early nutritional intervention with a polyphenol-supplemented diet where it is most effective and desirable. Besides, the proposed methodology assesses the effectiveness of interventions over time when applied to the OGTT curves of a treated individual. We illustrate the use of this method in a case study to assess the dose-dependent effects of Delphinol® on reducing dysglycemia risk and improving the coordination between subsystems. Finally, this strategy enables, on the one hand, the use of low-cost, non-invasive methods in population-scale nutritional studies. On the other hand, it will help practitioners assess the effectiveness of an intervention based on individual vulnerabilities and adapt the treatment to manage dysglycemia and avoid its progression into disease.
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Affiliation(s)
- Álvaro Olivera-Nappa
- Centre for Biotechnology and Bioengineering (CeBiB), University of Chile, Santiago, Chile
- Department of Chemical Engineering, Biotechnology and Materials, University of Chile, Santiago, Chile
- *Correspondence: Álvaro Olivera-Nappa
| | - Sebastian Contreras
- Max Planck Institute for Dynamics and Self-Organization, Göttingen, Germany
- Sebastian Contreras
| | - María Florencia Tevy
- Laboratory of Cell Biology, Institute of Nutrition and Food Technology (INTA), University of Chile, Santiago, Chile
| | - David Medina-Ortiz
- Centre for Biotechnology and Bioengineering (CeBiB), University of Chile, Santiago, Chile
- Department of Chemical Engineering, Biotechnology and Materials, University of Chile, Santiago, Chile
| | | | - Pilar Vigil
- Reproductive Health Research Institute, Santiago, Chile
| | - Carlos Conca
- Centre for Biotechnology and Bioengineering (CeBiB), University of Chile, Santiago, Chile
- Center for Mathematical Modelling (CMM), University of Chile, Santiago, Chile
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Biotechnological Applications and Health-Promoting Properties of Flavonols: An Updated View. Int J Mol Sci 2022; 23:ijms23031710. [PMID: 35163632 PMCID: PMC8835978 DOI: 10.3390/ijms23031710] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 01/28/2022] [Accepted: 01/28/2022] [Indexed: 02/01/2023] Open
Abstract
Flavonols are a subclass of natural flavonoids characterized by a remarkable number of biotechnological applications and health-promoting properties. They attract researchers’ attention due to many epidemiological studies supporting their usage. They are phytochemicals commonly present in our diet, being ubiquitous in the plant kingdom and, in particular, relatively very abundant in fruits and vegetables. All these aspects make flavonols candidates of choice for the valorization of products, based on the presence of a remarkable number of different chemical structures, each one characterized by specific chemical features capable of influencing biological targets inside the living organisms in very different manners. In this review, we analyzed the biochemical and physiological characteristics of flavonols focalizing our attention on the most promising compounds to shed some light on their increasing utilization in biotechnological applications in processing industries, as well as their suitable employment to improve the overall wellness of the humankind.
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Akinnusi PA, Olubode SO, Salaudeen WA. Molecular binding studies of anthocyanins with multiple antiviral activities against SARS-CoV-2. BULLETIN OF THE NATIONAL RESEARCH CENTRE 2022; 46:102. [PMID: 35431537 PMCID: PMC9006501 DOI: 10.1186/s42269-022-00786-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 03/30/2022] [Indexed: 05/11/2023]
Abstract
BACKGROUND The search for ideal drugs with absolute antiviral activity against SARS-CoV-2 is still in place, and attention has been recently drawn to natural products. Several molecular targets have been identified as points of therapeutic intervention. The targets used in this study include SARS-CoV-2 helicase, spike protein, RNA-dependent RNA polymerase, main protease, and human ACE-2. An integrative computer-aided approach, which includes molecular docking, pharmacophore modeling, and pharmacokinetic profiling, was employed to identify anthocyanins with robust multiple antiviral activities against these SARS-CoV-2 targets. RESULT Four anthocyanins (Delphinidin 3-O-glucosyl-glucoside, Cyanidin 3-O-glucosyl-rutinoside, Cyanidin 3-(p-coumaroyl)-diglucoside-5-glucoside), and Nasunin) with robust multiple inhibitory interactions were identified from a library of 118 anthocyanins using computer-aided techniques. These compounds exhibited very good binding affinity to the protein targets and moderate pharmacokinetic profiles. However, Cyanidin 3-O-glucosyl-rutinoside is reported to be the most suitable drug candidate with multiple antiviral effects against SARS-CoV-2 due to its good binding affinity to all five protein targets engaged in the study. CONCLUSIONS The anthocyanins reported in this study exhibit robust binding affinities and strong inhibitory molecular interactions with the target proteins and could be well exploited as potential drug candidates with potent multiple antiviral effects against COVID-19.
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Piña-Contreras N, Martínez-Moreno AG, Ramírez-Anaya JDP, Espinoza-Gallardo AC, Valdés EHM. Raspberry (Rubus idaeus L.), a Promising Alternative in the Treatment of Hyperglycemia and Dyslipidemias. J Med Food 2021; 25:121-129. [PMID: 34941428 DOI: 10.1089/jmf.2021.0046] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Raspberry production and consumption have increased in recent years due to its polyphenol content such as anthocyanins and ketones, bioactive compounds that have been studied to reduce blood glucose levels and stabilize the blood lipid profile. The objective of this study was to systematically recover and review scientific evidence regarding the consumption of raspberry or its bioactive compounds and the action mechanisms involved in the hypoglycemic and lipid-lowering effects they present. Original articles from in vitro and in vivo enzyme inhibition studies, animal models, and human clinical studies were compiled in PubMed, Web of Science, and Science Direct databases. Studies showed satisfactory results regarding blood glucose level reduction after consumption of frozen or lyophilized raspberry, infusion of raspberry leaves, seed oil, as well as compounds, extracted from the fruit by inhibiting enzymes such as α-glucosidase and dipeptidyl peptidase-4 (DPP-4) and other mechanisms that increase insulin production and insulin sensitivity. However, regarding the lipid-lowering effect, the results were heterogeneous, mainly in terms of stabilization in triglyceride levels. However, a reduction in cholesterol and low-density lipoprotein levels is reported, as well as an increase in high-density lipoproteins. According to the results, raspberry can be included in the nonpharmacological treatment of hyperglycemia and dyslipidemias; however, further research is considered necessary.
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Affiliation(s)
- Norma Piña-Contreras
- Behavioral Feeding and Nutrition Research Institute (IICAN), South University Center, University of Guadalajara, Ciudad Guzmán, Jalisco, Mexico
| | - Alma Gabriela Martínez-Moreno
- Behavioral Feeding and Nutrition Research Institute (IICAN), South University Center, University of Guadalajara, Ciudad Guzmán, Jalisco, Mexico
| | - Jessica Del Pilar Ramírez-Anaya
- Department of Computational Sciences and Technological Innovation, South University Center, University of Guadalajara, Guadalajara, Jalisco, Mexico
| | - Ana Cristina Espinoza-Gallardo
- Behavioral Feeding and Nutrition Research Institute (IICAN), South University Center, University of Guadalajara, Ciudad Guzmán, Jalisco, Mexico
| | - Elia Herminia Miramontes Valdés
- Behavioral Feeding and Nutrition Research Institute (IICAN), South University Center, University of Guadalajara, Ciudad Guzmán, Jalisco, Mexico
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Berry polyphenols and human health: evidence of antioxidant, anti-inflammatory, microbiota modulation, and cell-protecting effects. Curr Opin Food Sci 2021. [DOI: 10.1016/j.cofs.2021.06.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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17
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Geng X, Ji J, Liu Y, Li X, Chen Y, Su L, Zhao L. Cyanidin-3-O-Glucoside Supplementation Ameliorates Metabolic Insulin Resistance via Restoration of Nitric Oxide-Mediated Endothelial Insulin Transport. Mol Nutr Food Res 2021; 66:e2100742. [PMID: 34841692 DOI: 10.1002/mnfr.202100742] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 10/18/2021] [Indexed: 11/06/2022]
Abstract
SCOPE Anthocyanin cyanidin-3-O-glucoside (Cy3G) possesses a great potential in prevention of diabetes and its vascular complications while the underlying mechanisms are still far from clear. Accumulating evidence suggests that endothelial insulin transport plays a critical role in regulating metabolic insulin sensitivity. Whether Cy3G can modulate metabolic insulin resistance via regulating endothelial insulin transport is not reported yet. METHODS AND RESULTS Palmitic acid (PA)-treated mouse aortic endothelial cells (MAECs) model and high-fat diet (HFD) fed mice model are used. Compared with HFD mice, Cy3G supplementation decrease exogenous insulin content in skeletal muscle and ameliorate metabolic insulin resistance. In culture, Cy3G can directly ameliorate PA-induced impairment on FITC-insulin uptake in MAECs. Mechanistically, Cy3G can effectively decrease inflammatory cytokines and toll-like receptor 4 (TLR4)/nuclear factor-kappa-B inhibitor alpha (IκBα) activation, and restore the attenuated Akt/eNOS signaling pathway. Blunted nitric oxide (NO) synthase with N-nitro-l-arginine methyl ester (L-NAME) can effectively abolish the protective role of Cy3G on endothelial insulin transport and insulin-stimulated glucose utilization in HFD-fed mice. CONCLUSIONS These findings suggest that Cy3G supplementation can directly restore the attenuated nitic oxide-mediated endothelial insulin transport and thereby ameliorate metabolic insulin resistance. Our finding can provide a novel explanation for the anti-diabetic effects of Cy3G.
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Affiliation(s)
- Xiuwen Geng
- Department of Nutrition, School of Public Health, Sun Yat-sen University (Northern Campus), Guangzhou, Guangdong Province, 510080, P.R. China.,Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangzhou, Guangdong Province, 510080, P.R. China
| | - Jiajun Ji
- Department of Nutrition, School of Public Health, Sun Yat-sen University (Northern Campus), Guangzhou, Guangdong Province, 510080, P.R. China.,Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangzhou, Guangdong Province, 510080, P.R. China
| | - Yuanhua Liu
- Department of Nutrition, School of Public Health, Sun Yat-sen University (Northern Campus), Guangzhou, Guangdong Province, 510080, P.R. China.,Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangzhou, Guangdong Province, 510080, P.R. China
| | - Xueyan Li
- Department of Nutrition, School of Public Health, Sun Yat-sen University (Northern Campus), Guangzhou, Guangdong Province, 510080, P.R. China.,Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangzhou, Guangdong Province, 510080, P.R. China
| | - Yunan Chen
- Department of Nutrition, School of Public Health, Sun Yat-sen University (Northern Campus), Guangzhou, Guangdong Province, 510080, P.R. China.,Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangzhou, Guangdong Province, 510080, P.R. China
| | - Lei Su
- Department of Nutrition, School of Public Health, Sun Yat-sen University (Northern Campus), Guangzhou, Guangdong Province, 510080, P.R. China.,Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangzhou, Guangdong Province, 510080, P.R. China
| | - Lina Zhao
- Department of Nutrition, School of Public Health, Sun Yat-sen University (Northern Campus), Guangzhou, Guangdong Province, 510080, P.R. China.,Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangzhou, Guangdong Province, 510080, P.R. China
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18
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Ding W, Liu H, Qin Z, Liu M, Zheng M, Cai D, Liu J. Dietary Antioxidant Anthocyanins Mitigate Type II Diabetes through Improving the Disorder of Glycometabolism and Insulin Resistance. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:13350-13363. [PMID: 34730960 DOI: 10.1021/acs.jafc.1c05630] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Insulin resistance (IR) is one of the pathological reasons for type II diabetes mellitus (T2DM). Therefore, it is important to prevent the body from developing T2DM by improving IR and maintaining glucose homeostasis. Anthocyanins (ACNs) are water-soluble pigments and are widely distributed in natural products. This article summarizes research on the bioavailability and metabolism of ACNs. Moreover, we further elaborate on how ACNs reduce IR and hyperglycemia during the development of T2DM based on studies over the past 20 years. Many studies have demonstrated that ACNs are small molecules that target the pancreatic, liver, muscle, and adipose tissues, preventing IR and hyperglycemia. However, the molecular mechanisms are still unclear. Therefore, we envision whether the molecular mechanism of reducing T2DM by ACNs could be more deeply investigated.
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Affiliation(s)
- Wei Ding
- College of Food Science and Engineering, Jilin Agricultural University, 130118 Changchun, China
- National Engineering Laboratory for Wheat and Corn Deep Processing, 130118 Changchun, China
| | - Huimin Liu
- College of Food Science and Engineering, Jilin Agricultural University, 130118 Changchun, China
- National Engineering Laboratory for Wheat and Corn Deep Processing, 130118 Changchun, China
| | - Ziqi Qin
- College of Food Science and Engineering, Jilin Agricultural University, 130118 Changchun, China
| | - Meihong Liu
- College of Food Science and Engineering, Jilin Agricultural University, 130118 Changchun, China
- National Engineering Laboratory for Wheat and Corn Deep Processing, 130118 Changchun, China
| | - Mingzhu Zheng
- College of Food Science and Engineering, Jilin Agricultural University, 130118 Changchun, China
- National Engineering Laboratory for Wheat and Corn Deep Processing, 130118 Changchun, China
| | - Dan Cai
- College of Food Science and Engineering, Jilin Agricultural University, 130118 Changchun, China
- National Engineering Laboratory for Wheat and Corn Deep Processing, 130118 Changchun, China
| | - Jingsheng Liu
- College of Food Science and Engineering, Jilin Agricultural University, 130118 Changchun, China
- National Engineering Laboratory for Wheat and Corn Deep Processing, 130118 Changchun, China
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19
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Geraldi MV, Cazarin CBB, Cristianini M, Vasques AC, Geloneze B, Maróstica Júnior MR. Jabuticaba juice improves postprandial glucagon-like peptide-1 and antioxidant status in healthy adults: a randomized crossover trial. Br J Nutr 2021; 128:1-29. [PMID: 34776021 DOI: 10.1017/s0007114521004530] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Jabuticaba is a Brazilian berry rich in polyphenols, which may exert beneficial effects on metabolic diseases. This randomized crossover study aimed to determine the effects of jabuticaba juice (250 ml in a portion) on postprandial response. Sixteen healthy subjects (11 women; 5 men; 28.4 ± 3.8 years old; body mass index (BMI) 21.7 ± 2.3 kg m-2) consumed two test products after fasting overnight in a randomized controlled crossover design. Each test product portion had a similar composition of sugar components: 250 mL water with glucose, fructose, colored with artificial non-caloric food colorings (placebo); and 250 mL of jabuticaba juice. Beverages were administered immediately before a carbohydrate meal. Blood samples were collected at 0, 15, 30, 45, 60, 90, and 120 min after each test product to analyze the concentrations of glucose, insulin, C-peptide, antioxidant capacity, plasma glucagon-like peptide-1 (GLP-1), and appetite sensations. Compared to the placebo, the intake of jabuticaba juice resulted in a higher GLP-1 response as the area under the curve (AUC) and peaking at 60 min. Jabuticaba juice also resulted in higher antioxidant capacity. Postprandial glucose, insulin, C-peptide levels, and appetite sensations were not significantly different between tests. In conclusion, 250 mL of jabuticaba juice before a carbohydrate meal was able to improve the antioxidant status and GLP-1 concentrations in healthy subjects.
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Affiliation(s)
- Marina V Geraldi
- School of Food Engineering, University of Campinas, Rua Monteiro Lobato., 80, Campinas, SP, 13083-862, Brazil
| | - Cínthia B B Cazarin
- School of Food Engineering, University of Campinas, Rua Monteiro Lobato., 80, Campinas, SP, 13083-862, Brazil
| | - Marcelo Cristianini
- School of Food Engineering, University of Campinas, Rua Monteiro Lobato., 80, Campinas, SP, 13083-862, Brazil
| | - Ana C Vasques
- Laboratory of Investigation on Metabolism and Diabetes, Gastrocentro, University of Campinas, Rua Carlos Chagas., 420, Campinas, SP, 13083-878, Brazil
| | - Bruno Geloneze
- Laboratory of Investigation on Metabolism and Diabetes, Gastrocentro, University of Campinas, Rua Carlos Chagas., 420, Campinas, SP, 13083-878, Brazil
| | - Mário R Maróstica Júnior
- School of Food Engineering, University of Campinas, Rua Monteiro Lobato., 80, Campinas, SP, 13083-862, Brazil
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20
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Jokioja J, Yang B, Linderborg KM. Acylated anthocyanins: A review on their bioavailability and effects on postprandial carbohydrate metabolism and inflammation. Compr Rev Food Sci Food Saf 2021; 20:5570-5615. [PMID: 34611984 DOI: 10.1111/1541-4337.12836] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 08/13/2021] [Accepted: 08/14/2021] [Indexed: 12/31/2022]
Abstract
Anthocyanins, the natural red and purple colorants of berries, fruits, vegetables, and tubers, improve carbohydrate metabolism and decrease the risk factors of metabolic disorders, but their industrial use is limited by their chemical instability. Acylation of the glycosyl moieties of anthocyanins, however, changes the chemical properties of anthocyanins and provides enhanced stability. Thus, acylated anthocyanins are more usable as natural colorants and bioactive components of innovative functional foods. Acylated anthocyanins are common in pigmented vegetables and tubers, the consumption of which has the potential to increase the intake of health-promoting anthocyanins as part of the daily diet. For the first time, this review presents the current findings on bioavailability, absorption, metabolism, and health effects of acylated anthocyanins with comparison to more extensively investigated nonacylated anthocyanins. The structural differences between nonacylated and acylated anthocyanins lead to enhanced color stability, altered absorption, bioavailability, in vivo stability, and colonic degradation. The impact of phenolic metabolites and their potential health effects regardless of the low bioavailability of the parent anthocyanins as such is discussed. Here, purple-fleshed potatoes are presented as a globally available, eco-friendly model food rich in acylated anthocyanins, which further highlights the industrial possibilities and nutritional relevance of acylated anthocyanins. This work supports the academic community and industry in food research and development by reviewing the current literature and highlighting gaps of knowledge.
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Affiliation(s)
- Johanna Jokioja
- Food Chemistry and Food Development, Department of Life Technologies, University of Turku, Turku, Finland
| | - Baoru Yang
- Food Chemistry and Food Development, Department of Life Technologies, University of Turku, Turku, Finland
| | - Kaisa M Linderborg
- Food Chemistry and Food Development, Department of Life Technologies, University of Turku, Turku, Finland
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21
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Duangjai A, Trisat K, Saokaew S. Effect of Roasting Degree, Extraction Time, and Temperature of Coffee Beans on Anti-Hyperglycaemic and Anti-Hyperlipidaemic Activities Using Ultrasound-Assisted Extraction. Prev Nutr Food Sci 2021; 26:338-345. [PMID: 34737995 PMCID: PMC8531425 DOI: 10.3746/pnf.2021.26.3.338] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/17/2021] [Accepted: 06/30/2021] [Indexed: 11/19/2022] Open
Abstract
Coffee consumption has been linked to a low risk of metabolic syndrome. However, evidence supporting its anti-hyperglycaemic and anti-hyperlipidaemic activities remain poorly defined. The ultrasound-assisted extraction (UAE) technique has been shown to achieve high yields of bioactive compounds in coffee, with preserved functionality. The goal of the present study was to determine the effect of various coffee roasting extracts using UAE on their anti-hyperglycaemic and anti-hyperlipidaemic properties. We examined α-amylase and α-glucosidase, micelle size, micelle solubility, and pancreatic lipase activities. Coffee roasting degrees were classified as light coffee (LC), medium coffee (MC), and dark coffee (DC). We showed that DC at 80°C for 10 min, 40°C for 20 min, and 20°C for 20 min has a high potency to inhibit α-amylase, α-glucosidase, and pancreatic lipase activities by 33.79±3.25%, 19.68±1.43%, and 36.63±1.58%, respectively. LC enhanced cholesterol micelle size and suppressed cholesterol micelle solubility, which suggests that coffee roasting may enhance anti-hyperglycaemic and anti-hyperlipidaemic activities.
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Affiliation(s)
- Acharaporn Duangjai
- Unit of Excellence in Research and Product Development of Coffee, Division of Physiology, School of Medical Sciences, University of Phayao, Phayao 56000, Thailand
| | - Kanittaporn Trisat
- Department of Pharmacy Practice and Center of Excellence for Innovation in Chemistry, Pharmacological Research Unit, Faculty of Pharmaceutical Sciences, Naresuan University, Phitsanulok 65000, Thailan
| | - Surasak Saokaew
- Center of Health Outcomes Research and Therapeutic Safety (Cohorts), University of Phayao, Phayao 56000, Thailand.,Unit of Excellence on Clinical Outcomes Research and IntegratioN (UNICORN), University of Phayao, Phayao 56000, Thailand.,Unit of Excellence on Herbal Medicine, School of Pharmaceutical Sciences, University of Phayao, Phayao 56000, Thailand.,Division of Pharmacy Practice, Department of Pharmaceutical Care, School of Pharmaceutical Sciences, University of Phayao, Phayao 56000, Thailand
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22
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Ockermann P, Headley L, Lizio R, Hansmann J. A Review of the Properties of Anthocyanins and Their Influence on Factors Affecting Cardiometabolic and Cognitive Health. Nutrients 2021; 13:nu13082831. [PMID: 34444991 PMCID: PMC8399873 DOI: 10.3390/nu13082831] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/13/2021] [Accepted: 08/16/2021] [Indexed: 12/13/2022] Open
Abstract
The incidence of cardiovascular and metabolic diseases has increased over the last decades and is an important cause of death worldwide. An upcoming ingredient on the nutraceutical market are anthocyanins, a flavonoid subgroup, abundant mostly in berries and fruits. Epidemiological studies have suggested an association between anthocyanin intake and improved cardiovascular risk, type 2 diabetes and myocardial infarct. Clinical studies using anthocyanins have shown a significant decrease in inflammation markers and oxidative stress, a beneficial effect on vascular function and hyperlipidemia by decreasing low-density lipoprotein and increasing high-density lipoprotein. They have also shown a potential effect on glucose homeostasis and cognitive decline. This review summarizes the effects of anthocyanins in in-vitro, animal and human studies to give an overview of their application in medical prevention or as a dietary supplement.
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Affiliation(s)
- Philipp Ockermann
- Institute for Tissue Engineering and Regenerative Medicine, University Hospital Wuerzburg, Roentgenring 11, 97070 Wuerzburg, Germany;
- Correspondence:
| | | | | | - Jan Hansmann
- Institute for Tissue Engineering and Regenerative Medicine, University Hospital Wuerzburg, Roentgenring 11, 97070 Wuerzburg, Germany;
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23
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Targeting Inflammation by Anthocyanins as the Novel Therapeutic Potential for Chronic Diseases: An Update. Molecules 2021; 26:molecules26144380. [PMID: 34299655 PMCID: PMC8304181 DOI: 10.3390/molecules26144380] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/14/2021] [Accepted: 07/15/2021] [Indexed: 02/07/2023] Open
Abstract
Low-grade chronic inflammation (LGCI) and oxidative stress act as cooperative and synergistic partners in the pathogenesis of a wide variety of diseases. Polyphenols, including anthocyanins, are involved in regulating the inflammatory state and activating the endogenous antioxidant defenses. Anthocyanins' effects on inflammatory markers are promising and may have the potential to exert an anti-inflammatory effect in vitro and in vivo. Therefore, translating these research findings into clinical practice would effectively contribute to the prevention and treatment of chronic disease. The present narrative review summarizes the results of clinical studies from the last 5 years in the context of the anti-inflammatory and anti-oxidative role of anthocyanins in both health and disease. There is evidence to indicate that anthocyanins supplementation in the regulation of pro-inflammatory markers among the healthy and chronic disease population. Although the inconsistencies between the result of randomized control trials (RCTs) and meta-analyses were also observed. Regarding anthocyanins' effects on inflammatory markers, there is a need for long-term clinical trials allowing for the quantifiable progression of inflammation. The present review can help clinicians and other health care professionals understand the importance of anthocyanins use in patients with chronic diseases.
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24
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Behl T, Mehta K, Sehgal A, Singh S, Sharma N, Ahmadi A, Arora S, Bungau S. Exploring the role of polyphenols in rheumatoid arthritis. Crit Rev Food Sci Nutr 2021; 62:5372-5393. [PMID: 33998910 DOI: 10.1080/10408398.2021.1924613] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Rheumatoid arthritis (RA) is a chronic, inflammatory and autoimmune disorder which is mainly characterized by inflammation in joints, bone erosions and cartilaginous destruction that leads to joint dysfunction, deformation, and/or permanent functional impairment. The prevalence of RA is increasing, incurring a considerable burden on healthcare systems globally. The exact etiology of RA is unknown, with various pathways implicated in its pathophysiology. Non-steroidal anti-inflammatory drugs (NSAIDs) including celecoxib, diclofenac and ibuprofen, disease-modifying anti-rheumatic drugs (DMARD) including azathioprine, methotrexate and cyclosporine, biological agents including anakinra, infliximab, and rituximab and immunosuppressants are used for symptomatic relief in patients with RA, but these medications have severe adverse effects such as gastric ulcers, hypertension, hepatotoxicity and renal abnormalities which restrict their use in the treatment of RA; new RA treatments with minimal side-effects are urgently required. There is accumulating evidence that dietary polyphenols may show therapeutic efficacy in RA through their antioxidant, anti-inflammatory, apoptotic, and immunosuppressant activities and modulation of the tumor necrosis factor-α (TNF-α), interleukin (IL)-6, mitogen-activated protein kinase (MAPK), IL-1β, c-Jun N-terminal kinase (JNK), and nuclear factor κ light-chain-enhancer of activated B cell (NF-κB) pathways. While resveratrol, genistein, carnosol, epigallocatechin gallate, curcumin, kaempferol, and hydroxytyrosol have also been studied for the treatment of RA, the majority of data are derived from animal models. Here, we review the various pathways involved in the development of RA and the preclinical and clinical data supporting polyphenols as potential therapeutic agents in RA patients. Our review highlights that high-quality clinical studies are required to decisively establish the anti-rheumatic efficacy of polyphenolic compounds.
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Affiliation(s)
- Tapan Behl
- Chitkara College of Pharmacy, Chitkara University, Rajpura, Punjab, India
| | - Keshav Mehta
- Chitkara College of Pharmacy, Chitkara University, Rajpura, Punjab, India
| | - Aayush Sehgal
- Chitkara College of Pharmacy, Chitkara University, Rajpura, Punjab, India
| | - Sukhbir Singh
- Chitkara College of Pharmacy, Chitkara University, Rajpura, Punjab, India
| | - Neelam Sharma
- Chitkara College of Pharmacy, Chitkara University, Rajpura, Punjab, India
| | - Amirhossein Ahmadi
- Faculty of Pharmacy, Mazandaran University of Medial Sciences, Sari, Iran
| | - Sandeep Arora
- Chitkara College of Pharmacy, Chitkara University, Rajpura, Punjab, India
| | - Simona Bungau
- Department of Pharmacy, Faculty of Medicine and Pharmacy, University of Oradea, Oradea, Romania
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25
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Valorization of Bilberry ( Vaccinium myrtillus L.) Pomace by Enzyme-Assisted Extraction: Process Optimization and Comparison with Conventional Solid-Liquid Extraction. Antioxidants (Basel) 2021; 10:antiox10050773. [PMID: 34068178 PMCID: PMC8152979 DOI: 10.3390/antiox10050773] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 05/06/2021] [Accepted: 05/08/2021] [Indexed: 02/06/2023] Open
Abstract
Bilberry (Vaccinium myrtillus L.) pomace contains a significant amount of polyphenols and can serve as a basis for food additives, nutraceuticals, and functional foods. Although various techniques can be employed to recover bioactive fractions from berry pomaces, data on enzyme-assisted extraction (EAE) of bilberry pomace are rather scarce. This study aimed to optimize critical EAE parameters using Viscozyme L to obtain a high-yield extract with enhanced antioxidant capacity. Central composite design and response surface methodology evaluating the effect of four independent variables, namely, pH, temperature, extraction time, and enzyme concentration on three responses, were employed to define optimal EAE conditions. Under the optimal conditions (pH: 4.5, temperature 46 °C, 1 h of extraction, and 2 active units (AU) of Viscozyme L/g of pomace), EAE yielded 56.15 g/100 g DW of the water-soluble fraction. Comparison with conventional maceration indicated that EAE, besides the yield, significantly increased the in vitro antioxidant capacity measured by the total phenolic content, ABTS, ORAC, and CUPRAC assays. Moreover, an increase was observed for the measured mono- and disaccharide as well as anthocyanin content. Overall, this study demonstrates the improved efficiency of EAE over conventional solid–liquid extraction to recover fractions with a higher yield and enhanced functional properties in a fast and sustainable manner.
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26
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Basu A, Feng D, Planinic P, Ebersole JL, Lyons TJ, Alexander JM. Dietary Blueberry and Soluble Fiber Supplementation Reduces Risk of Gestational Diabetes in Women with Obesity in a Randomized Controlled Trial. J Nutr 2021; 151:1128-1138. [PMID: 33693835 PMCID: PMC8112774 DOI: 10.1093/jn/nxaa435] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 10/09/2020] [Accepted: 12/11/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Gestational diabetes mellitus (GDM) is a growing public health concern and maternal obesity and poor dietary intakes could be implicated. Dietary polyphenols and fiber mitigate the risk of diabetes and its complications, but little is known about their efficacy in preventing GDM. OBJECTIVES We examined the effects of whole blueberry and soluble fiber supplementation on primary outcomes of cardiometabolic profiles in women at high risk of developing GDM. METHODS Women (n = 34; mean ± SD age: 27 ± 5 y; BMI: 35.5 ± 4.0 kg/m2; previous history of GDM ∼56%; Hispanic ∼79%) were recruited in early pregnancy (<20 weeks of gestation) and randomly assigned to 1 of the following 2 groups for 18 wk: intervention (280 g whole blueberries and 12 g soluble fiber per day) and standard prenatal care (control). Both groups received nutrition education and maintained 24-h food recalls throughout the study. Data on anthropometrics, blood pressure, and blood samples for biochemical analyses were collected at baseline (<20 weeks), midpoint (24-28 weeks), and end (32-36 weeks) of gestation. Diagnosis of GDM was based on a 2-step glucose challenge test (GCT). Data were analyzed using a mixed-model ANOVA. RESULTS Maternal weight gain was significantly lower in the dietary intervention than in the control group at the end of the trial (mean ± SD: 6.8 ± 3.2 kg compared with 12.0 ± 4.1 kg, P = 0.001). C-reactive protein was also lower in the intervention than in the control group (baseline: 6.1 ± 4.0 compared with 6.8 ± 7.2 mg/L; midpoint: 6.1 ± 3.7 compared with 7.5 ± 7.3 mg/L; end: 5.5 ± 2.2 compared with 9.5 ± 6.6 mg/L, respectively, P = 0.002). Blood glucose based on GCT was lower in the intervention than in the control (100 ± 33 mg/dL compared with 131 ± 40 mg/dL, P < 0.05). Conventional lipids (total, LDL, and HDL cholesterol and triglycerides) did not differ between groups over time. No differences were noted in infant birth weight. CONCLUSIONS Whole blueberry and soluble fiber supplementation may prevent excess gestational weight gain and improve glycemic control and inflammation in women with obesity.This trial was registered at clinicaltrials.gov as NCT03467503.
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Affiliation(s)
- Arpita Basu
- Department of Kinesiology and Nutrition Sciences, University of Nevada at Las Vegas, Las Vegas, NV, USA
| | - Du Feng
- School of Nursing, University of Nevada at Las Vegas, Las Vegas, NV, USA
| | - Petar Planinic
- Department of Obstetrics & Gynecology, School of Medicine, University of Nevada at Las Vegas, Las Vegas, NV, USA
| | - Jeffrey L Ebersole
- School of Dental Medicine, University of Nevada at Las Vegas, Las Vegas, NV, USA
| | - Timothy J Lyons
- Division of Endocrinology, Medical University of South Carolina, Charleston, SC, USA
| | - James M Alexander
- Department of Obstetrics & Gynecology, School of Medicine, University of Nevada at Las Vegas, Las Vegas, NV, USA
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27
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Kay KL, Strauch RC, Granillo CD, Bame MW, Xiong J, Mast AC, Burton-Freeman B, Kay CD, Lila MA. The berry health tool chest - an evidence map and interactive resource. Nutr Rev 2021; 80:68-77. [PMID: 33837434 DOI: 10.1093/nutrit/nuab011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Berry consumption is linked to diverse health benefits, but numerous questions remain regarding mechanism of action, dose efficacy, and optimal duration and frequency of intake. Addressing these outstanding questions requires an organized assessment of current research, to inform future study designs and fill critical knowledge gaps. Tools that organize such information will also facilitate consumer messaging, targeted nutritional health initiatives, and dietary intake guidelines. This review aimed to describe the development and utility of the "Berry Health Tool Chest," an evidence map summarizing trial design features of studies characterizing the impact of berry consumption upon human health biomarkers. A systematic search strategy identified relevant high-quality human feeding studies, whose study design parameters were collected and compiled into an evidence map that is freely available as an interactive online interface enabling tabulated data to be interrogated, filtered, and exported. Of the 231 included studies, approximately 70% were of less than 3 months' duration and/or fewer than 50 participants, illustrating research gaps that could potentially inform the design of future studies.
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Affiliation(s)
- Kristine L Kay
- K.L. Kay, R.C. Strauch, C.D. Granillo, M.W Bame, J. Xiong, A.C. Mast, C.D. Kay, and M.A. Lila are with the Food Bioprocessing and Nutrition Sciences Department, Plants for Human Health Institute, North Carolina State University, North Carolina Research Campus, Kannapolis, North Carolina, USA. B. Burton-Freeman is with the Department of Food Science and Nutrition, Center for Nutrition Research, Institute for Food Safety and Health, Illinois Institute of Technology, Chicago, Ilinois, USA
| | - Renee C Strauch
- K.L. Kay, R.C. Strauch, C.D. Granillo, M.W Bame, J. Xiong, A.C. Mast, C.D. Kay, and M.A. Lila are with the Food Bioprocessing and Nutrition Sciences Department, Plants for Human Health Institute, North Carolina State University, North Carolina Research Campus, Kannapolis, North Carolina, USA. B. Burton-Freeman is with the Department of Food Science and Nutrition, Center for Nutrition Research, Institute for Food Safety and Health, Illinois Institute of Technology, Chicago, Ilinois, USA
| | - Cheryl D Granillo
- K.L. Kay, R.C. Strauch, C.D. Granillo, M.W Bame, J. Xiong, A.C. Mast, C.D. Kay, and M.A. Lila are with the Food Bioprocessing and Nutrition Sciences Department, Plants for Human Health Institute, North Carolina State University, North Carolina Research Campus, Kannapolis, North Carolina, USA. B. Burton-Freeman is with the Department of Food Science and Nutrition, Center for Nutrition Research, Institute for Food Safety and Health, Illinois Institute of Technology, Chicago, Ilinois, USA
| | - Megan W Bame
- K.L. Kay, R.C. Strauch, C.D. Granillo, M.W Bame, J. Xiong, A.C. Mast, C.D. Kay, and M.A. Lila are with the Food Bioprocessing and Nutrition Sciences Department, Plants for Human Health Institute, North Carolina State University, North Carolina Research Campus, Kannapolis, North Carolina, USA. B. Burton-Freeman is with the Department of Food Science and Nutrition, Center for Nutrition Research, Institute for Food Safety and Health, Illinois Institute of Technology, Chicago, Ilinois, USA
| | - Jia Xiong
- K.L. Kay, R.C. Strauch, C.D. Granillo, M.W Bame, J. Xiong, A.C. Mast, C.D. Kay, and M.A. Lila are with the Food Bioprocessing and Nutrition Sciences Department, Plants for Human Health Institute, North Carolina State University, North Carolina Research Campus, Kannapolis, North Carolina, USA. B. Burton-Freeman is with the Department of Food Science and Nutrition, Center for Nutrition Research, Institute for Food Safety and Health, Illinois Institute of Technology, Chicago, Ilinois, USA
| | - Aubrey C Mast
- K.L. Kay, R.C. Strauch, C.D. Granillo, M.W Bame, J. Xiong, A.C. Mast, C.D. Kay, and M.A. Lila are with the Food Bioprocessing and Nutrition Sciences Department, Plants for Human Health Institute, North Carolina State University, North Carolina Research Campus, Kannapolis, North Carolina, USA. B. Burton-Freeman is with the Department of Food Science and Nutrition, Center for Nutrition Research, Institute for Food Safety and Health, Illinois Institute of Technology, Chicago, Ilinois, USA
| | - Britt Burton-Freeman
- K.L. Kay, R.C. Strauch, C.D. Granillo, M.W Bame, J. Xiong, A.C. Mast, C.D. Kay, and M.A. Lila are with the Food Bioprocessing and Nutrition Sciences Department, Plants for Human Health Institute, North Carolina State University, North Carolina Research Campus, Kannapolis, North Carolina, USA. B. Burton-Freeman is with the Department of Food Science and Nutrition, Center for Nutrition Research, Institute for Food Safety and Health, Illinois Institute of Technology, Chicago, Ilinois, USA
| | - Colin D Kay
- K.L. Kay, R.C. Strauch, C.D. Granillo, M.W Bame, J. Xiong, A.C. Mast, C.D. Kay, and M.A. Lila are with the Food Bioprocessing and Nutrition Sciences Department, Plants for Human Health Institute, North Carolina State University, North Carolina Research Campus, Kannapolis, North Carolina, USA. B. Burton-Freeman is with the Department of Food Science and Nutrition, Center for Nutrition Research, Institute for Food Safety and Health, Illinois Institute of Technology, Chicago, Ilinois, USA
| | - Mary Ann Lila
- K.L. Kay, R.C. Strauch, C.D. Granillo, M.W Bame, J. Xiong, A.C. Mast, C.D. Kay, and M.A. Lila are with the Food Bioprocessing and Nutrition Sciences Department, Plants for Human Health Institute, North Carolina State University, North Carolina Research Campus, Kannapolis, North Carolina, USA. B. Burton-Freeman is with the Department of Food Science and Nutrition, Center for Nutrition Research, Institute for Food Safety and Health, Illinois Institute of Technology, Chicago, Ilinois, USA
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Väkeväinen K, Rinkinen N, Willman RM, Lappi J, Raninen K, Kårlund A, Mikkonen S, Plumed-Ferrer C, Kolehmainen M. Potential of Probiotic Frozen Blackcurrant Products: Consumer Preference, Physicochemical Characterization, and Cell Viability. Foods 2021; 10:foods10040792. [PMID: 33917021 PMCID: PMC8067756 DOI: 10.3390/foods10040792] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 04/02/2021] [Accepted: 04/03/2021] [Indexed: 12/03/2022] Open
Abstract
Blackcurrant is a healthy, affordable, and traditionally gardened berry that, thus far, has been underused in food applications. From the consumers’ point of view, the acidic taste of blackcurrants is a challenge; therefore, these berries have mainly been utilized for sugary juice production. This research study aimed to develop a frozen vegan blackcurrant product with pleasant sensory properties and potential probiotic function. A candidate probiotic, Lactoplantibacillus plantarum Q823, was used in the manufacturing process. The physicochemical properties, nutritional composition, and consumer preference for the developed product were assessed, as was the viability of L. plantarum Q823 during storage time and in an in vitro gastrointestinal model. Consumers (n = 71) perceived the developed product to be pleasant. L. plantarum Q823 had high viability counts (log colony forming units (cfu) g−1 7.0 ± 0.38) in the final product, although the viability of L. plantarum Q823 during storage time needs to be enhanced to obtain a probiotic product. Thus, within an optimized formulation, blackcurrant berries represent a potential raw material for functional frozen food products.
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Affiliation(s)
- Kati Väkeväinen
- Institute of Public Health and Clinical Nutrition, University of Eastern Finland, P.O. Box 1627, 70210 Kuopio, Finland; (N.R.); (R.-M.W.); (K.R.); (A.K.); (M.K.)
- Correspondence:
| | - Noora Rinkinen
- Institute of Public Health and Clinical Nutrition, University of Eastern Finland, P.O. Box 1627, 70210 Kuopio, Finland; (N.R.); (R.-M.W.); (K.R.); (A.K.); (M.K.)
| | - Roosa-Maria Willman
- Institute of Public Health and Clinical Nutrition, University of Eastern Finland, P.O. Box 1627, 70210 Kuopio, Finland; (N.R.); (R.-M.W.); (K.R.); (A.K.); (M.K.)
| | - Jenni Lappi
- Faculty of Business, Tourism and Hospitality, Savonia University of Applied Sciences, P.O. Box 6, 70201 Kuopio, Finland;
| | - Kaisa Raninen
- Institute of Public Health and Clinical Nutrition, University of Eastern Finland, P.O. Box 1627, 70210 Kuopio, Finland; (N.R.); (R.-M.W.); (K.R.); (A.K.); (M.K.)
- SIB Labs, University of Eastern Finland, P.O. Box 1627, 70210 Kuopio, Finland
| | - Anna Kårlund
- Institute of Public Health and Clinical Nutrition, University of Eastern Finland, P.O. Box 1627, 70210 Kuopio, Finland; (N.R.); (R.-M.W.); (K.R.); (A.K.); (M.K.)
| | - Santtu Mikkonen
- Department of Applied Physics, University of Eastern Finland, P.O. Box 1627, 70210 Kuopio, Finland;
- Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, 70210 Kuopio, Finland
| | | | - Marjukka Kolehmainen
- Institute of Public Health and Clinical Nutrition, University of Eastern Finland, P.O. Box 1627, 70210 Kuopio, Finland; (N.R.); (R.-M.W.); (K.R.); (A.K.); (M.K.)
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Ríos J, Valero-Jara V, Thomas-Valdés S. Phytochemicals in breast milk and their benefits for infants. Crit Rev Food Sci Nutr 2021; 62:6821-6836. [PMID: 33792429 DOI: 10.1080/10408398.2021.1906627] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Exclusive breastfeeding is widely recommended at least during the first 6 months of life and breast milk (BM) composition depends on maternal diet. Phytochemicals, including polyphenols and carotenoids, are recognized by their powerful antioxidant activities being present in BM. This review provides an overview of BM composition with respect to polyphenols and carotenoids evaluating its possible benefits for the infant. Polyphenols do not have any body deposit and their content in BM depends on regular dietary intake from mothers and bioavailability of them, while carotenoids content in BM changed depending on factors including stages of breastfeeding, maternal diet and maternal health status. Preeclampsia, overweight or obesity are conditions able to reduce polyphenols and carotenoids in BM by using them as antioxidants. For both polyphenols and carotenoids, the supplementation slightly enhances their BM content. Few studies have shown the presence of phytochemicals in infant plasma and still remains unclear the benefits that polyphenols and carotenoids provide for development of infants. Further studies using long-term, randomized and controlled designs are necessary to determine the relation between carotenoids, polyphenols and its potential benefits for early childhood.
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Affiliation(s)
- Jimena Ríos
- Escuela de Nutrición y Dietética, Facultad de Farmacia, Universidad de Valparaíso, Valparaíso, Chile
| | - Viviana Valero-Jara
- Programa de Doctorado en Ciencias e Ingeniería para la Salud, Universidad de Valparaíso, Valparaíso, Chile
| | - Samanta Thomas-Valdés
- Escuela de Nutrición y Dietética, Facultad de Farmacia, Universidad de Valparaíso, Valparaíso, Chile
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Rahman S, Mathew S, Nair P, Ramadan WS, Vazhappilly CG. Health benefits of cyanidin-3-glucoside as a potent modulator of Nrf2-mediated oxidative stress. Inflammopharmacology 2021; 29:907-923. [PMID: 33740221 DOI: 10.1007/s10787-021-00799-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 03/06/2021] [Indexed: 02/07/2023]
Abstract
Berries are natural sources of anthocyanins, especially cyanidin-3-glucoside (C3G), and exhibit significant antioxidant, antidiabetic, anti-inflammatory, and cytoprotective effects against various oxidative stress-induced disorders. C3G and its metabolites possess higher absorption and bioavailability, and interaction with gut microbiota may enhance their health benefits. Various in vitro studies have shown the reactive oxygen species (ROS)-mitigating potential of C3G. However, in in vivo models, C3G exerts its cytoprotective properties by regulating the nuclear factor erythroid 2-related factor 2 (Nrf2)/antioxidant-responsive element (ARE) pathway. Despite existing reports stating various health benefits of C3G, its antioxidant potential by modulating the Nrf2 pathway remains less identified. This review discusses the Nrf2-mediated antioxidant response of C3G in modulating oxidative stress against DNA damage, apoptosis, carcinogen toxicity, and inflammatory conditions. Furthermore, we have reviewed the recent clinical trial data to establish cross talk between a berry-rich diet and disease prevention.
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Affiliation(s)
- Sofia Rahman
- School of Natural Sciences and Mathematics, The University of Texas at Dallas, Richardson, USA
| | - Shimy Mathew
- Department of Biotechnology, American University of Ras Al Khaimah, Ras Al Khaimah, 10021, UAE
| | - Pooja Nair
- Department of Biotechnology, American University of Ras Al Khaimah, Ras Al Khaimah, 10021, UAE
| | - Wafaa S Ramadan
- Sharjah Institute for Medical Research, University of Sharjah, Sharjah, UAE.,College of Medicine, University of Sharjah, Sharjah, UAE
| | - Cijo George Vazhappilly
- Department of Biotechnology, American University of Ras Al Khaimah, Ras Al Khaimah, 10021, UAE.
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Berries anthocyanins as potential SARS-CoV–2 inhibitors targeting the viral attachment and replication; molecular docking simulation. EGYPTIAN JOURNAL OF PETROLEUM 2021; 30. [PMCID: PMC7825908 DOI: 10.1016/j.ejpe.2021.01.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
The viral respiratory disease, severe acute respiratory syndrome (SARS), has turned into a global health concern. Till now, there is no drug or vaccine has yet been specifically approved for SARS-CoV-2. One of the urgent solutions against the recent COVID-19 disease is the use of dietary molecules, which can be found abundantly in functional food. In the current study, we have conducted a molecular docking approach for eighteen dietary molecules belong to the subclass of anthocyanins, as potential inhibitors of the main protease and spike glycoprotein of SARS-CoV-2. Both selected targets, playing a vital role in attachment and replication of the virus. The results indicated that cyanidin-3-arabinoside exhibited the lowest binding energy and located onto the pocket through a sufficient number of hydrogen bonds with the main protease virus. However, pelargonidin-3-glucoside and pelargonidin 3-rhamnoside display significant binding energy with the spike glycoprotein of SARS-CoV-2. All compounds mentioned above shown high drug-likeness and fulfils the Lipinski’s rule of five, as well as confer favorable toxicity parameters, in addition to ADME values. Considering the obtained results, regular consumption of berry fruits, which are rich in anthocyanin compounds, should be supportive to inhibit viral infectious by reducing of propagation and pathogenicity of SARS-CoV–2.
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Rajendran M, Ravi Chandran K. Grain Dimension, Nutrition and Nutraceutical Properties of Black and Red Varieties of Rice in India. CURRENT RESEARCH IN NUTRITION AND FOOD SCIENCE JOURNAL 2020. [DOI: 10.12944/crnfsj.8.3.20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Traditional colored rice varieties in India are the source of carbohydrates, phytochemicals and minerals. They facilitate the growth of probiotics in intestine and protect human from many chronic diseases. The present study investigated the nutritional properties such as total sugars, digestible sugars, resistant sugars, hydrolysis index, glycemic index and total proteins of thirteen colored varieties of rice in India. Nutraceutical properties like anti diabetic and prebiotic activity were investigated by standard methods. Chak hao poreiton and mappillai samba grains were 6.3 mm in length. Lowest length of 5.1 mm was recorded in 60 m Kuruvai. Among the rice varieties, mappillai samba has high concentration of digestible starch of 91% and Chak hao poreiton had low concentration of 62%. Resistant starch was 38% in Chak hao poreiton and 8% in mappillai samba. Lowest glycemic index of 52 and 53 were recorded in karuthakar poha and Chak hao poreiton respectively. Anthocyanin extracted from Chak hao poreiton inhibited 24% of human pancreatic α-amylase activity. It significantly increased the probiotic number from 0.15 CFU/mL to 1.95 CFU/mL. The study revealed that the black rice variety, Chak hao poreiton was rich in resistant starch and exhibited low glycemic index. The anthocyanins from Chak hao poreiton possessed significant antidiabetic and prebiotic activity. Molecular docking studies revealed the interaction of anthocyanin with pancreatic α-amylase, β-glucosidase and GLUT1.
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Affiliation(s)
- Mala Rajendran
- Department of Biotechnology, Mepco Schlenk Engineering College, Sivakasi, Tamil Nadu, India
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Anthocyanin Bioactivity in Obesity and Diabetes: The Essential Role of Glucose Transporters in the Gut and Periphery. Cells 2020; 9:cells9112515. [PMID: 33233708 PMCID: PMC7699863 DOI: 10.3390/cells9112515] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 11/18/2020] [Accepted: 11/18/2020] [Indexed: 12/17/2022] Open
Abstract
Obesity and type-2 diabetes trends continue to worsen in the United States. Dietary anthocyanins (typically provided by berries and other fruits) are reported to have protective effects against both conditions using a variety of experimental research models including animal and human feeding studies. This review highlights studies that explore the biochemical pathways in both tissue and rodent models which could explain clinical improvements noted with anthocyanin consumption. First, the primary mode of intestinal absorption of anthocyanins is through both sGLT1 and GLUT2 glucose transporters. Stronger binding affinities may allow anthocyanins to be more inhibitive to glucose absorption compared to the reverse, where GLUT2 expression may also be affected. Genetic or chemical inhibition of sGLT1 or GLUT2 demonstrate their essential function in anthocyanin absorption across the enterocyte, where the former interacts with a greater variety of anthocyanins but the latter is the major transporter for specific anthocyanin-glycosides. Once absorbed, anthocyanins positively modulate GLUT4 density and function in both skeletal muscle and adipose tissues via the upregulation of AMPK and restoration of insulin sensitivity. Antioxidant properties and phosphodiesterase inhibition by anthocyanins promote both mitochondrial function and density which could be novel targets for dietary management of obesity and its complications.
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Blackcurrant ( Ribes nigrum) lowers sugar-induced postprandial glycaemia independently and in a product with fermented quinoa: a randomised crossover trial. Br J Nutr 2020; 126:708-717. [PMID: 33161904 PMCID: PMC8340457 DOI: 10.1017/s0007114520004468] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Berries rich in anthocyanins have beneficial effects on postprandial glycaemia. We investigated whether blackcurrant (75 g in a portion) independently and in a product with fermented quinoa induced similar effects on the sugar-induced postprandial glucose metabolism as observed before with 150 g of blackcurrant. Twenty-six healthy subjects (twenty-two females and four males) consumed four test products after fasting overnight in a randomised, controlled crossover design. Each test product portion contained 31 g of available carbohydrates and had similar composition of sugar components: 300 ml water with sucrose, glucose and fructose (SW; reference), blackcurrant purée with added sugars (BC), a product consisting of the blackcurrant purée and a product base with fermented quinoa (BCP) and the product base without blackcurrant (PB). Blood samples were collected at 0, 15, 30, 45, 60, 90, 120 and 180 min after eating each test product to analyse the concentrations of glucose, insulin and NEFA. In comparison with the SW, the intake of both the BC and BCP resulted in reduced glucose and insulin concentrations during the first 30 min, a more balanced decline during the first hour and improved glycaemic profile. The BCP induced more efficient effects than the BC due to the product base with fermented quinoa. A rebound of NEFA after the sugar-induced hypoglycaemic response was attenuated at the late postprandial phase by the BC and BCP. In conclusion, we showed that 75 g of blackcurrant and the product with fermented quinoa were able to lower postprandial glycaemia and insulinaemia.
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35
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Yang Y, Zhang JL, Zhou Q. Targets and mechanisms of dietary anthocyanins to combat hyperglycemia and hyperuricemia: a comprehensive review. Crit Rev Food Sci Nutr 2020; 62:1119-1143. [PMID: 33078617 DOI: 10.1080/10408398.2020.1835819] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Hyperglycemia and hyperuricemia are both metabolic disorders related to excessive amount of metabolites in blood, which are considered as high risk factors for the development of many chronic diseases. Enzymes, cells, tissues and organs, which are relevant to metabolism and excretion of glucose and UA, are usually regarded to be the targets in treatment of hyperglycemia and hyperuricemia. Several drugs have been commonly applied to combat hyperglycemia and hyperuricemia through various targets but with unignorable side effects. Anthocyanins have become promising alternatives against hyperglycemia and hyperuricemia because of their bio-activities with little side effects. Structurally different anthocyanins from berry fruits, cherries and purple sweet potato lead to the diverse functional activity and property. This review is aimed to illustrate the specific targets that are available for anthocyanins from berry fruits, cherries and purple sweet potato in hyperglycemia and hyperuricemia management, as well as discuss the structure-activity relationship, and the underlying mechanisms associated with intracellular signaling pathway, anti-oxidative stress and anti-inflammation. In addition, the relationship of hyperglycemia and hyperuricemia, and the possibly regulative role of anthocyanins against them, along with the effects of anthocyanins in clinical trial are mentioned.
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Affiliation(s)
- Yang Yang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Jiu-Liang Zhang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, China.,Ministry of Education, Key Laboratory of Environment Correlative Dietology, Wuhan, China
| | - Qing Zhou
- Department of Pharmacy, Wuhan City Central Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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36
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Oliveira H, Fernandes A, F. Brás N, Mateus N, de Freitas V, Fernandes I. Anthocyanins as Antidiabetic Agents-In Vitro and In Silico Approaches of Preventive and Therapeutic Effects. Molecules 2020; 25:E3813. [PMID: 32825758 PMCID: PMC7504281 DOI: 10.3390/molecules25173813] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/13/2020] [Accepted: 08/17/2020] [Indexed: 12/12/2022] Open
Abstract
Many efforts have been made in the past two decades into the search for novel natural and less-toxic anti-diabetic agents. Some clinical trials have assigned this ability to anthocyanins, although different factors like the food source, the amount ingested, the matrix effect and the time of consumption (before or after a meal) seem to result in contradictory conclusions. The possible mechanisms involved in these preventive or therapeutic effects will be discussed-giving emphasis to the latest in vitro and in silico approaches. Therapeutic strategies to counteract metabolic alterations related to hyperglycemia and Type 2 Diabetes Mellitus (T2DM) may include: (a) Inhibition of carbohydrate-metabolizing enzymes; (b) reduction of glucose transporters expression or activity; (c) inhibition of glycogenolysis and (d) modulation of gut microbiota by anthocyanin breakdown products. These strategies may be achieved through administration of individual anthocyanins or by functional foods containing complexes of anthocyanin:carbohydrate:protein.
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Affiliation(s)
| | | | | | | | | | - Iva Fernandes
- LAQV, REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal; (H.O.); (A.F.); (N.F.B.); (N.M.); (V.d.F.)
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37
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Ang K, Bourgy C, Fenton H, Regina A, Newberry M, Diepeveen D, Lafiandra D, Grafenauer S, Hunt W, Solah V. Noodles Made from High Amylose Wheat Flour Attenuate Postprandial Glycaemia in Healthy Adults. Nutrients 2020; 12:nu12082171. [PMID: 32707905 PMCID: PMC7468775 DOI: 10.3390/nu12082171] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 07/15/2020] [Accepted: 07/21/2020] [Indexed: 01/07/2023] Open
Abstract
Previous research has not considered the effect of high amylose wheat noodles on postprandial glycaemia. The aim of the study is to investigate the effect of consumption of high amylose noodles on postprandial glycaemia over 2-h periods by monitoring changes in blood glucose concentration and calculating the total area under the blood glucose concentration curve. Twelve healthy young adults were recruited to a repeated measure randomised, single-blinded crossover trial to compare the effect of consuming noodles (180 g) containing 15%, 20% and 45% amylose on postprandial glycaemia. Fasting blood glucose concentrations were taken via finger-prick blood samples. Postprandial blood glucose concentrations were taken at 15, 30, 45, 60, 90 and 120 min. Subjects consuming high amylose noodles made with flour containing 45% amylose had significantly lower blood glucose concentration at 15, 30 and 45 min (5.5 ± 0.11, 6.1 ± 0.11 and 5.6 ± 0.11 mmol/L; p = 0.01) compared to subjects consuming low amylose noodles with 15% amylose (5.8 ± 0.12, 6.6 ± 0.12 and 5.9 ± 0.12 mmol/L). The total area under the blood glucose concentration curve after consumption of high amylose noodles with 45% amylose was 640.4 ± 9.49 mmol/L/min, 3.4% lower than consumption of low amylose noodles with 15% amylose (662.9 ± 9.49 mmol/L/min), p = 0.021. Noodles made from high amylose wheat flour attenuate postprandial glycaemia in healthy young adults, as characterised by the significantly lower blood glucose concentration and a 3.4% reduction in glycaemic response.
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Affiliation(s)
- Kim Ang
- School Public Health, Curtin University, Perth 6845, Western Australia, Australia; (K.A.); (C.B.); (H.F.); (W.H.)
| | - Carla Bourgy
- School Public Health, Curtin University, Perth 6845, Western Australia, Australia; (K.A.); (C.B.); (H.F.); (W.H.)
| | - Haelee Fenton
- School Public Health, Curtin University, Perth 6845, Western Australia, Australia; (K.A.); (C.B.); (H.F.); (W.H.)
- School of Molecular and Life Sciences, Curtin University, Perth 6845, Western Australia, Australia
| | - Ahmed Regina
- Commonwealth Scientific and Industrial Research Organisation, Agriculture and Food, Canberra 2601, ACT, Australia; (A.R.); (M.N.)
| | - Marcus Newberry
- Commonwealth Scientific and Industrial Research Organisation, Agriculture and Food, Canberra 2601, ACT, Australia; (A.R.); (M.N.)
| | - Dean Diepeveen
- Department of Primary Industries and Regional Development, South Perth 6151, Western Australia; Australia;
- College of Science, Health, Engineering and Education, Murdoch University, Murdoch 6150, Western Australia, Australia
| | - Domenico Lafiandra
- Department Agricultural and Forestry Sciences, University of Tuscia, 01100 Viterbo, Italy;
| | - Sara Grafenauer
- Grains and Legumes Nutrition Council, North Ryde 2113, Australia;
| | - Wendy Hunt
- School Public Health, Curtin University, Perth 6845, Western Australia, Australia; (K.A.); (C.B.); (H.F.); (W.H.)
- Australian Export Grains Innovation Centre, South Perth 6151, Western Australia, Australia
| | - Vicky Solah
- School Public Health, Curtin University, Perth 6845, Western Australia, Australia; (K.A.); (C.B.); (H.F.); (W.H.)
- School of Molecular and Life Sciences, Curtin University, Perth 6845, Western Australia, Australia
- College of Science, Health, Engineering and Education, Murdoch University, Murdoch 6150, Western Australia, Australia
- Correspondence:
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Liu Y, Zhang X, Zhan L, Xu C, Sun L, Jiang H, Sun C, Li X. LC-Q-TOF-MS Characterization of Polyphenols from White Bayberry Fruit and Its Antidiabetic Effect in KK-A y Mice. ACS OMEGA 2020; 5:17839-17849. [PMID: 32715269 PMCID: PMC7377368 DOI: 10.1021/acsomega.0c02759] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 06/24/2020] [Indexed: 05/25/2023]
Abstract
The present study is to investigate the polyphenolic composition and in vivo antidiabetic effect of white-fleshed Chinese bayberry cultivar "Shui Jing". By liquid chromatography quadrupole time-of-flight mass spectrometry (LC-Q-TOF-MS), 38 polyphenols were identified in the Shui Jing fruit extract (SJE), where proanthocyanidins (PAs), including epigallocatechin gallate (EGCG), as well as flavonols, including myricitrin and quercetrin, were the predominant ingredients. After a 5-week experiment, the SJE (200 mg/kg bodyweight) significantly reduced fasting blood glucose, elevated glucose tolerance, and insulin sensitivity in diabetic KK-Ay mice. It markedly attenuated bodyweight gain and decreased glycolipid metabolism-related markers including insulin, leptin, glucagon, triglyceride (TG), total cholesterol (TC), low-density lipoprotein cholesterol (LDL-c) and alanine aminotransferase (ALT) levels in mice. Liver weight and hepatic lipid accumulation were also significantly reduced by the SJE. Gene expressions of insulin 1 (INS1) and glycogen synthase kinase 3 β (GSK3b) were markedly inhibited while the hepatic phosphorylation of AMPKα was significantly increased in the liver of SJE-treated mice, indicating that the SJE may exert an antidiabetic effect through an AMPK-dependent pathway. In conclusion, white bayberry rich in PAs and flavonols may have great potential in the regulation of diabetes mellitus.
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Affiliation(s)
- Yilong Liu
- Zhejiang
Provincial Key Laboratory of Horticultural Plant Integrative Biology/The
State Agriculture Ministry Laboratory of Horticultural Plant Growth,
Development and Quality Improvement, Zhejiang
University, Hangzhou 310058, China
| | - Xianan Zhang
- Forestry
and Fruit Research Institute, Shanghai Academy
of Agricultural Sciences, Shanghai 201403, China
| | - Liuhuan Zhan
- Zhejiang
Provincial Key Laboratory of Horticultural Plant Integrative Biology/The
State Agriculture Ministry Laboratory of Horticultural Plant Growth,
Development and Quality Improvement, Zhejiang
University, Hangzhou 310058, China
| | - Chang Xu
- Zhejiang
Provincial Key Laboratory of Horticultural Plant Integrative Biology/The
State Agriculture Ministry Laboratory of Horticultural Plant Growth,
Development and Quality Improvement, Zhejiang
University, Hangzhou 310058, China
| | - Linxiao Sun
- Key
Laboratory of Diagnosis and Treatment of Severe Hepato-Pancreatic
Diseases of Zhejiang Province, Zhejiang Provincial Top Key Discipline
in Surgery, Wenzhou Medical University First
Affiliated Hospital, Wenzhou 325000, China
| | - Huamin Jiang
- Hangzhou
Lichuan Ecological Agriculture Development Co., Ltd., Hangzhou 311123, China
| | - Chongde Sun
- Zhejiang
Provincial Key Laboratory of Horticultural Plant Integrative Biology/The
State Agriculture Ministry Laboratory of Horticultural Plant Growth,
Development and Quality Improvement, Zhejiang
University, Hangzhou 310058, China
| | - Xian Li
- Zhejiang
Provincial Key Laboratory of Horticultural Plant Integrative Biology/The
State Agriculture Ministry Laboratory of Horticultural Plant Growth,
Development and Quality Improvement, Zhejiang
University, Hangzhou 310058, China
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Nolan A, Brett R, Strauss JA, Stewart CE, Shepherd SO. Short-term, but not acute, intake of New Zealand blackcurrant extract improves insulin sensitivity and free-living postprandial glucose excursions in individuals with overweight or obesity. Eur J Nutr 2020; 60:1253-1262. [PMID: 32648022 PMCID: PMC7987707 DOI: 10.1007/s00394-020-02329-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 07/03/2020] [Indexed: 01/04/2023]
Abstract
Abstract Impaired postprandial glucose handling and low-grade systemic inflammation are risk factors for developing insulin resistance in individuals with overweight or obesity. Acute ingestion of anthocyanins improves postprandial glucose responses to a single carbohydrate-rich meal under strictly controlled conditions. Purpose Examine whether acute and short-term supplementation with anthocyanin-rich New Zealand blackcurrant (NZBC) extract can improve postprandial glucose responses to mixed-macronutrient meals. Methods Twenty-five overweight (BMI > 25 kg m2) sedentary individuals participated in one of the following double-blinded, randomised controlled trials: (1) ingestion of 600 mg NZBC extract or placebo prior to consumption of a high-carbohydrate, high-fat liquid meal (n = 12); (2) 8-days supplementation with NZBC extract (600 mg day−1) or placebo, with insulin sensitivity and markers of inflammation assessed on day-7, and free-living postprandial glucose (continuous glucose monitoring) assessed on day-8 (n = 13). Results A single dose of NZBC extract had no effect on 3 h postprandial glucose, insulin or triglyceride responses. However, in response to short-term NZBC extract supplementation insulin sensitivity was improved (+ 22%; P = 0.011), circulating C-reactive protein concentrations decreased (P = 0.008), and free-living postprandial glucose responses to both breakfast and lunch meals were reduced (− 9% and − 8%, respectively; P < 0.05), compared to placebo. Conclusion These novel results indicate that repeated intake, rather than a single dose of NZBC extract, is required to induce beneficial effects on insulin sensitivity and postprandial glucose handling in individuals with overweight or obesity. Continuous glucose monitoring enabled an effect of NZBC extract to be observed under free-living conditions and highlights the potential of anthocyanin-rich supplements as a viable strategy to reduce insulin resistance.
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Affiliation(s)
- A Nolan
- Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, UK
| | - R Brett
- Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, UK
| | - J A Strauss
- Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, UK
| | - C E Stewart
- Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, UK
| | - S O Shepherd
- Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, UK.
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Speciale A, Saija A, Bashllari R, Molonia MS, Muscarà C, Occhiuto C, Cimino F, Cristani M. Anthocyanins As Modulators of Cell Redox-Dependent Pathways in Non-Communicable Diseases. Curr Med Chem 2020; 27:1955-1996. [PMID: 30417771 DOI: 10.2174/0929867325666181112093336] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 10/22/2018] [Accepted: 11/04/2018] [Indexed: 12/15/2022]
Abstract
Chronic Noncommunicable Diseases (NCDs), mostly represented by cardiovascular diseases, diabetes, chronic pulmonary diseases, cancers, and several chronic pathologies, are one of the main causes of morbidity and mortality, and are mainly related to the occurrence of metabolic risk factors. Anthocyanins (ACNs) possess a wide spectrum of biological activities, such as anti-inflammatory, antioxidant, cardioprotective and chemopreventive properties, which are able to promote human health. Although ACNs present an apparent low bioavailability, their metabolites may play an important role in the in vivo protective effects observed. This article directly addresses the scientific evidences supporting that ACNs could be useful to protect human population against several NCDs not only acting as antioxidant but through their capability to modulate cell redox-dependent signaling. In particular, ACNs interact with the NF-κB and AP-1 signal transduction pathways, which respond to oxidative signals and mediate a proinflammatory effect, and the Nrf2/ARE pathway and its regulated cytoprotective proteins (GST, NQO, HO-1, etc.), involved in both cellular antioxidant defenses and elimination/inactivation of toxic compounds, so countering the alterations caused by conditions of chemical/oxidative stress. In addition, supposed crosstalks could contribute to explain the protective effects of ACNs in different pathological conditions characterized by an altered balance among these pathways. Thus, this review underlines the importance of specific nutritional molecules for human health and focuses on the molecular targets and the underlying mechanisms of ACNs against various diseases.
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Affiliation(s)
- Antonio Speciale
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy
| | - Antonella Saija
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy
| | - Romina Bashllari
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy
| | - Maria Sofia Molonia
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy
| | - Claudia Muscarà
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy.,"Prof. Antonio Imbesi" Foundation, University of Messina, Messina, Italy
| | - Cristina Occhiuto
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy
| | - Francesco Cimino
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy
| | - Mariateresa Cristani
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy
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Mela DJ, Cao XZ, Dobriyal R, Fowler MI, Lin L, Joshi M, Mulder TJP, Murray PG, Peters HPF, Vermeer MA, Zhang Z. The effect of 8 plant extracts and combinations on post-prandial blood glucose and insulin responses in healthy adults: a randomized controlled trial. Nutr Metab (Lond) 2020; 17:51. [PMID: 32647531 PMCID: PMC7336677 DOI: 10.1186/s12986-020-00471-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Accepted: 06/24/2020] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND Lower post-prandial glucose (PPG) and insulin (PPI) responses to foods are associated with reduced diabetes risk and progression. Several plant extracts have been proposed to reduce PPG or PPI by inhibiting enzymes or transporters involved in carbohydrate digestion and uptake. This study evaluates a range of such extracts, consumed with a carbohydrate load, for their effects on PPG, PPI and indicators of (gastrointestinal) tolerance. METHODS Interventions were extracts of mulberry fruit (MFE, 1.5 g), mulberry leaf (MLE, 1.0 g), white bean (WBE, 3.0 g), apple (AE, 2.0 g), elderberry (EE, 2.0 g), turmeric (TE, 0.18 g), AE + TE, and EE + TE. Each of these 8 individual extracts or combinations were added to a rice porridge containing ~ 50 g available carbohydrate (control). In a within-subject (randomised, balanced incomplete block) design, individual subjects received the control and a subset of 4 of the 8 extracts or combinations. Participants were 72 apparently healthy adults (mean [SD] age 31.2 [5.5] yr, body mass index 22.1 [2.0] kg/m2). The primary outcome was the percentage change in 2-h PPG (positive incremental area under the curve) relative to control. Secondary measures were the 2-h PPI response, 7-h breath hydrogen, measures of gastrointestinal discomfort, and urine glucose. RESULTS In the 65 subjects who completed the control and at least one intervention treatment, additions of AE, MFE and MLE produced statistically significant reductions in PPG vs control (p < 0.05; mean effect - 24.1 to - 38.1%). All extracts and combinations except TE and WBE significantly reduced PPI (p < 0.01; mean effect - 17.3% to - 30.4%). Rises in breath hydrogen > 10 ppm were infrequent, but statistically more frequent than control only for MLE (p = 0.02). Scores for gastrointestinal discomfort were extremely low and not different from control for any treatment, and no glucosuria was observed. CONCLUSIONS Additions of AE, MFE and MLE to rice robustly reduced PPG and PPI. EE significantly reduced only PPI, while TE and WBE showed no significant efficacy for PPG or PPI. Breath hydrogen responses to MLE suggest possible carbohydrate malabsorption at the dose used, but there were no explicit indications of intolerance to any of the extracts. TRIAL REGISTRATION ClinicalTrials.gov identifier NCT04258501. Registered 6 February 2020 - Retrospectively registered.
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Affiliation(s)
| | | | | | | | - Li Lin
- Unilever R&D Shanghai, Shanghai, China
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42
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Ni D, Ai Z, Munoz-Sandoval D, Suresh R, Ellis PR, Yuqiong C, Sharp PA, Butterworth PJ, Yu Z, Corpe CP. Inhibition of the facilitative sugar transporters (GLUTs) by tea extracts and catechins. FASEB J 2020; 34:9995-10010. [PMID: 32564472 DOI: 10.1096/fj.202000057rr] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 04/17/2020] [Accepted: 05/05/2020] [Indexed: 01/21/2023]
Abstract
Tea polyphenolics have been suggested to possess blood glucose lowering properties by inhibiting sugar transporters in the small intestine and improving insulin sensitivity. In this report, we studied the effects of teas and tea catechins on the small intestinal sugar transporters, SGLT1 and GLUTs (GLUT1, 2 and 5). Green tea extract (GT), oolong tea extract (OT), and black tea extract (BT) inhibited glucose uptake into the intestinal Caco-2 cells with GT being the most potent inhibitor (IC50 : 0.077 mg/mL), followed by OT (IC50 : 0.136 mg/mL) and BT (IC50 : 0.56 mg/mL). GT and OT inhibition of glucose uptake was partial non-competitive, with an inhibitor constant (Ki ) = 0.0317 and 0.0571 mg/mL, respectively, whereas BT was pure non-competitive, Ki = 0.36 mg/mL. Oocytes injected to express small intestinal GLUTs were inhibited by teas, but SGLT1 was not. Furthermore, catechins present in teas were the predominant inhibitor of glucose uptake into Caco-2 cells, and gallated catechins the most potent: CG > ECG > EGCG ≥ GCG when compared to the non-gallated catechins (C, EC, GC, and EGC). In Caco-2 cells, individual tea catechins reduced the SGLT1 gene, but not protein expression levels. In contrast, GLUT2 gene and protein expression levels were reduced after 2 hours exposure to catechins but increased after 24 hours. These in vitro studies suggest teas containing catechins may be useful dietary supplements capable of blunting postprandial glycaemia in humans, including those with or at risk to Type 2 diabetes mellitus.
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Affiliation(s)
- Dejiang Ni
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan City, China.,Faculty of Life Sciences and Medicine, Departments of Biochemistry and Nutrition, King's College London, London, UK
| | - Zeyi Ai
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan City, China.,Institute of Leisure Agriculture, Jiangsu Academy of Agricultural Sciences, Nanjing City, China
| | - Diana Munoz-Sandoval
- Faculty of Life Sciences and Medicine, Department of Nutritional Sciences, King's College London, London, UK
| | - Reshma Suresh
- Faculty of Life Sciences and Medicine, Department of Nutritional Sciences, King's College London, London, UK
| | - Peter R Ellis
- Faculty of Life Sciences and Medicine, Departments of Biochemistry and Nutrition, King's College London, London, UK
| | - Chen Yuqiong
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan City, China
| | - Paul A Sharp
- Faculty of Life Sciences and Medicine, Department of Nutritional Sciences, King's College London, London, UK
| | - Peter J Butterworth
- Faculty of Life Sciences and Medicine, Departments of Biochemistry and Nutrition, King's College London, London, UK
| | - Zhi Yu
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan City, China
| | - Christopher P Corpe
- Faculty of Life Sciences and Medicine, Department of Nutritional Sciences, King's College London, London, UK
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Dias R, Oliveira H, Fernandes I, Simal-Gandara J, Perez-Gregorio R. Recent advances in extracting phenolic compounds from food and their use in disease prevention and as cosmetics. Crit Rev Food Sci Nutr 2020; 61:1130-1151. [PMID: 32338035 DOI: 10.1080/10408398.2020.1754162] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Phenolic compounds in plants are essential components of human nutrition, which provide various health benefits. However, some missing links became the research in phenolic compounds structures and potential applications in a challenging work. Despite universal extraction methods with mixtures of different organic solvents are generally adopted in the analysis of phenolic compounds, a need for establish a specific procedure is still open. The great heterogeneity in food and food by-products matrices and the lack of standardized methods which combine chromatographic with spectrophotometric techniques to calculate the amount of phenolic compounds joined with the absence of specific standards hamper to accurate know the real amount of phenolic compounds. Indeed, the high complexity in nature and chemistry of phenolic compounds clearly difficult to establish a daily intake to obtain certain healthy outcomes. Hence, despite the potential of phenolic compounds to use them in cosmetic and healthy applications have been widely analyzed, some concerns must be considered. The chemical complexity, the interactions between phenolic compounds and other food components and the structural changes induced by food processing joined with the lack in the understanding of phenolic compounds metabolism and bioavailability undergo the need to conduct a comprehensive review of each factors influencing the final activity of phenolic compounds. This paper summarizes the potential of phenolic compounds for disease prevention and cosmetics production, as well as their many other uses derived from their antioxidant activity. This paper illustrates the potential of phenolic compounds for disease prevention and cosmetics production, as well as their many other uses derived from their antioxidant activity.
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Affiliation(s)
- Ricardo Dias
- LAQV-REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, Porto, Portugal
| | - Helder Oliveira
- LAQV-REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, Porto, Portugal
| | - Iva Fernandes
- LAQV-REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, Porto, Portugal
| | - Jesus Simal-Gandara
- Nutrition and Bromatology Group, Department of Analytical and Food Chemistry, Faculty of Food Science and Technology, University of Vigo - Ourense Campus, Ourense, Spain
| | - Rosa Perez-Gregorio
- LAQV-REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, Porto, Portugal
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Anthocyanin-enriched bilberry extract attenuates glycaemic response in overweight volunteers without changes in insulin. J Funct Foods 2020. [DOI: 10.1016/j.jff.2019.103597] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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Liu Y, Zhan L, Xu C, Jiang H, Zhu C, Sun L, Sun C, Li X. α-Glucosidase inhibitors from Chinese bayberry (Morella rubra Sieb. et Zucc.) fruit: molecular docking and interaction mechanism of flavonols with different B-ring hydroxylations. RSC Adv 2020; 10:29347-29361. [PMID: 35521141 PMCID: PMC9055920 DOI: 10.1039/d0ra05015f] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Accepted: 07/29/2020] [Indexed: 11/21/2022] Open
Abstract
Inhibition of α-glucosidase alleviates postprandial high glycemic levels in diabetic or prediabetic population.
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Affiliation(s)
- Yilong Liu
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology
- Zhejiang University
- Hangzhou
- China
| | - Liuhuan Zhan
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology
- Zhejiang University
- Hangzhou
- China
| | - Chang Xu
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology
- Zhejiang University
- Hangzhou
- China
| | - Huamin Jiang
- Hangzhou Lichuan Ecological Agriculture Development Co., Ltd
- Hangzhou
- China
| | - Changqing Zhu
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology
- Zhejiang University
- Hangzhou
- China
| | - Linxiao Sun
- Key Laboratory of Diagnosis and Treatment of Severe Hepato-Pancreatic Diseases of Zhejiang Province
- Zhejiang Provincial Top Key Discipline in Surgery
- Wenzhou Medical University First Affiliated Hospital
- Wenzhou
- China
| | - Chongde Sun
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology
- Zhejiang University
- Hangzhou
- China
| | - Xian Li
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology
- Zhejiang University
- Hangzhou
- China
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Son HU, Yoon EK, Yoo CY, Park CH, Bae MA, Kim TH, Lee CH, Lee KW, Seo H, Kim KJ, Lee SH. Effects of Synergistic Inhibition on α-glucosidase by Phytoalexins in Soybeans. Biomolecules 2019; 9:E828. [PMID: 31817312 PMCID: PMC6995600 DOI: 10.3390/biom9120828] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 12/02/2019] [Accepted: 12/03/2019] [Indexed: 11/16/2022] Open
Abstract
To determine the mechanism of action of the effects of phytoalexins in soybeans, we analyzed α-glucosidase inhibition kinetics using Michaelis-Menten plots and Lineweaver-Burk plots. The results showed that the type of inhibition with glyceollin was competitive, that of genistein was noncompetitive, that of daidzein was uncompetitive, and luteolin showed a mixed mode of action. The Ki values were determined using a Dixon plot as glyceollin, 18.99 μM; genistein, 15.42 μM; luteolin, 16.81 μM; and daidzein, 9.99 μM. Furthermore, potential synergistic effects between glyceollin and the three polyphenols were investigated. A combination of glyceollin and luteolin at a ratio of 3:7 exhibited synergistic effects on α-glucosidase inhibition, having a combination index (CI) of 0.64244, according to the CI-isobologram equation. Collectively, these results showed that a combination of glyceollin and luteolin has the potential to inhibit α-glucosidase activity via a synergistic mode of inhibition.
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Affiliation(s)
- Hyeong-U Son
- School of Food Science & Biotechnology, Graduate School, Kyungpook National University, Daegu 41566, Korea; (H.-U.S.); (E.-K.Y.); (C.-Y.Y.)
| | - Eun-Kyeong Yoon
- School of Food Science & Biotechnology, Graduate School, Kyungpook National University, Daegu 41566, Korea; (H.-U.S.); (E.-K.Y.); (C.-Y.Y.)
| | - Chi-Yeol Yoo
- School of Food Science & Biotechnology, Graduate School, Kyungpook National University, Daegu 41566, Korea; (H.-U.S.); (E.-K.Y.); (C.-Y.Y.)
| | - Chul-Hong Park
- Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA 70808, USA;
| | - Myung-Ae Bae
- Korea Research Institute of Chemical Technology, Daejeon 34114, Korea;
| | - Tae-Ho Kim
- Biomedical Research Institute, Kyungpook National University Hospital, Daegu 41940, Korea;
| | - Chang Hyung Lee
- Major in Biomodulation, Department of Agricultural Biotechnology and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea; (C.H.L.); (K.W.L.)
| | - Ki Won Lee
- Major in Biomodulation, Department of Agricultural Biotechnology and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea; (C.H.L.); (K.W.L.)
| | - Hogyun Seo
- School of Life Sciences, KNU Creative BioResearch Group, Institute of Microorganisms, Kyungpook National University, Daegu 41566, Korea; (H.S.); (K.-J.K.)
| | - Kyung-Jin Kim
- School of Life Sciences, KNU Creative BioResearch Group, Institute of Microorganisms, Kyungpook National University, Daegu 41566, Korea; (H.S.); (K.-J.K.)
| | - Sang-Han Lee
- School of Food Science & Biotechnology, Graduate School, Kyungpook National University, Daegu 41566, Korea; (H.-U.S.); (E.-K.Y.); (C.-Y.Y.)
- knu BnC, Daegu 41566, Korea
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Sobolev AP, Ciampa A, Ingallina C, Mannina L, Capitani D, Ernesti I, Maggi E, Businaro R, Del Ben M, Engel P, Giusti AM, Donini LM, Pinto A. Blueberry-Based Meals for Obese Patients with Metabolic Syndrome: A Multidisciplinary Metabolomic Pilot Study. Metabolites 2019; 9:metabo9070138. [PMID: 31295937 PMCID: PMC6680695 DOI: 10.3390/metabo9070138] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 07/05/2019] [Accepted: 07/07/2019] [Indexed: 12/23/2022] Open
Abstract
A pilot study was carried out on five obese/overweight patients suffering from metabolic syndrome, with the aim to evaluate postprandial effects of high fat/high glycemic load meals enriched by blueberries. Postprandial urine samples were analyzed by 1H-NMR spectroscopy after 2 and 4 h from ingestion to identify potential markers of blueberry intake. Significant decrease of methylamines, acetoacetate, acetone and succinate, known indicators of type 2 diabetes mellitus, were observed after the intake of meals enriched with blueberries. On the other hand, an accumulation of p-hydroxyphenyl-acetic acid and 3-(3’-hydroxyphenyl)-3-hydropropionic acid originating from gut microbial dehydrogenation of proanthocyanidins and procyanidins was detected. Real-time PCR-analysis of mRNAs obtained from mononuclear blood cells showed significant changes in cytokine gene expression levels after meals integrated with blueberries. In particular, the mRNAs expression of interleukin-6 (IL-6) and Transforming Growth Factor-β (TGF-β), pro and anti-inflammation cytokines, respectively, significantly decreased and increased after blueberry supplementation, indicating a positive impact of blueberry ingestion in the reduction of risk of inflammation. The combined analysis of the urine metabolome and clinical markers represents a promising approach in monitoring the metabolic impact of blueberries in persons with metabolic syndrome.
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Affiliation(s)
- Anatoly Petrovich Sobolev
- Laboratorio di Risonanza Magnetica "Annalaura Segre", Istituto per i Sistemi Biologici, CNR, via Salaria km 29.300, I-00015 Monterotondo, Italy
| | - Alessandra Ciampa
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro 5, I-00185 Roma, Italy
| | - Cinzia Ingallina
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro 5, I-00185 Roma, Italy.
| | - Luisa Mannina
- Laboratorio di Risonanza Magnetica "Annalaura Segre", Istituto per i Sistemi Biologici, CNR, via Salaria km 29.300, I-00015 Monterotondo, Italy.
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro 5, I-00185 Roma, Italy.
| | - Donatella Capitani
- Laboratorio di Risonanza Magnetica "Annalaura Segre", Istituto per i Sistemi Biologici, CNR, via Salaria km 29.300, I-00015 Monterotondo, Italy
| | - Ilaria Ernesti
- Sezione di Fisiopatologia Medica, Scienza dell'Alimentazione ed Endocrinologia - Dipartimento di Medicina Sperimentale, Sapienza Università di Roma, Piazzale Aldo Moro 5, I-00185 Roma, Italy
| | - Elisa Maggi
- Dipartimento di Scienze e Biotecnologie medico-chirurgiche, Sapienza Università di Roma, Corso della Repubblica 79, 04100 Latina, Italy
| | - Rita Businaro
- Dipartimento di Scienze e Biotecnologie medico-chirurgiche, Sapienza Università di Roma, Corso della Repubblica 79, 04100 Latina, Italy
| | - Maria Del Ben
- Dipartimento di Medicina Interna e Specialità Mediche, Policlinico Umberto 1 Sapienza Università di Roma, viale del Policlinico 151, I-00185, Roma, Italy
| | - Petra Engel
- Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria (CREA), Ufficio Rapporti Istituzionali e Relazioni Internazionali, Via Po 14, 00198 Roma, Italy
| | - Anna Maria Giusti
- Sezione di Fisiopatologia Medica, Scienza dell'Alimentazione ed Endocrinologia - Dipartimento di Medicina Sperimentale, Sapienza Università di Roma, Piazzale Aldo Moro 5, I-00185 Roma, Italy
| | - Lorenzo M Donini
- Sezione di Fisiopatologia Medica, Scienza dell'Alimentazione ed Endocrinologia - Dipartimento di Medicina Sperimentale, Sapienza Università di Roma, Piazzale Aldo Moro 5, I-00185 Roma, Italy
| | - Alessandro Pinto
- Sezione di Fisiopatologia Medica, Scienza dell'Alimentazione ed Endocrinologia - Dipartimento di Medicina Sperimentale, Sapienza Università di Roma, Piazzale Aldo Moro 5, I-00185 Roma, Italy
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Ch'ng LZ, Barakatun-Nisak MY, Wan Zukiman WZH, Abas F, Wahab NA. Nutritional strategies in managing postmeal glucose for type 2 diabetes: A narrative review. Diabetes Metab Syndr 2019; 13:2339-2345. [PMID: 31405640 DOI: 10.1016/j.dsx.2019.05.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 05/22/2019] [Indexed: 12/13/2022]
Abstract
Medical Nutrition Therapy (MNT) plays an essential role in overall glycemic management. Less focus is given on managing postmeal hyperglycemia despite the facts that, it is a common feature of Type 2 Diabetes (T2D). The purpose of this narrative review is to provide a comprehensive understanding of the existing literature on the nutritional approaches to improve postmeal hyperglycemia in patients with T2D. We searched multiple databases for the studies examining the nutritional approaches to manage postmeal glucose in patients with T2D. We included studies that involve human trials that were published in English for the past 10 years. Our review of the current literature indicates that the postmeal hyperglycemia can be improved with four nutritional approaches. These approaches include (i) utilizing the appropriate amount and selecting the right type of carbohydrates, (ii) using specific types of dietary protein, (iii) manipulating the meal timing and orders and (iv) others (promoting postmeal physical activity, incorporating diabetes-specific formula and certain functional foods). The potential mechanisms underlying these approaches are discussed and the identified gaps warranted further research. This array of nutritional strategies provide a set of options for healthcare professionals to facilitate patients with T2D in achieving the optimal level of postmeal glucose.
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Affiliation(s)
- Lau Zhi Ch'ng
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra, Malaysia
| | - Mohd Yusof Barakatun-Nisak
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra, Malaysia; Research Centre of Excellent for Nutrition and Noncommunicable Diseases (NNCD), Faculty of Medicine and Health Sciences, Universiti Putra, Malaysia.
| | | | - Faridah Abas
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra, Malaysia
| | - Norasyikin A Wahab
- Department of Medicine, Faculty of Medicine, Universiti Kebangsaan, Malaysia
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Abstract
Some food bioactives potentially exert anti-obesity effects. Anthocyanins (ACN), catechins, β-glucan (BG) and n-3 long chain PUFA (LCPUFA) are among the most promising candidates and have been considered as a strategy for the development of functional foods counteracting body weight gain. At present, clinical trials, reviews and meta-analyses addressing anti-obesity effects of various bioactives or bioactive-rich foods show contradictory results. Abdominal obesity is an important criterion for metabolic syndrome (MetS) diagnosis along with glucose intolerance, dyslipidaemia and hypertension. Food bioactives are supposed to exert beneficial effects on these parameters, therefore representing alternative therapy approaches for the treatment of MetS. This review summarises outcomes on MetS biomarkers in recent clinical trials supplementing ACN, catechins, BG and n-3 LCPUFA, focusing mainly on anti-obesity effects. Overall, it is clear that the level of evidence for the effectiveness varies not only among the different bioactives but also among the different putative health benefits suggested for the same bioactive. Limited evidence may be due to the low number of controlled intervention trials or to inconsistencies in trial design, i.e. duration, dose and/or the method of bioactive supplementation (extracts, supplements, rich or enriched food). At present, the question 'Are bioactives effective in weight management and prevention of metabolic syndrome?' remains inconclusive. Thus, a common effort to harmonise the study design of intervention trials focusing on the most promising bioactive molecules is urgently needed to strengthen the evidence of their potential in the treatment of obesity, MetS and related diseases.
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Kim J, Hyun SW, Lee IS, Jo K, Kim YS, Kim JS, Kim CS. Aster koraiensis extract lowers postprandial glucose in normoglycemic and high-fat-diet-induced obese mice. Food Sci Biotechnol 2019; 28:563-568. [PMID: 30956869 PMCID: PMC6431321 DOI: 10.1007/s10068-018-0497-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Revised: 10/08/2018] [Accepted: 10/16/2018] [Indexed: 11/28/2022] Open
Abstract
The Aster koraiensis extract (ASKO) is a newly developed dietary herbal supplement. In this study, the potent blood glucose-lowering activity of ASKO in vitro and in vivo was investigated. In an in vitro glucose uptake assay, ASKO was found to enhance glucose transport in 3T3-L1 adipocytes. Oral administration of ASKO significantly reduced glucose levels in normoglycemic mice during oral glucose tolerance tests (OGTTs). In a long-term efficacy study, 4 weeks of oral ASKO treatment significantly attenuated blood glucose levels during OGTTs in diet-induced obese (DIO) mice. ASKO also enhanced plasma insulin levels after glucose loading, leading to a reduction in blood glucose levels. In addition, ASKO normalized glucose transporter-4 mRNA expression in the muscles of DIO mice. These results indicate that ASKO has postprandial glucose-lowering effects and could be beneficial in the management of prediabetes or type 2 diabetes mellitus.
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Affiliation(s)
- Junghyun Kim
- Korean Medicine Convergence Research Division, Korea Institute of Oriental Medicine, 1672 Yusengdae-ro, Daejeon, 34054 Republic of Korea
- Department of Oral Pathology, School of Dentistry, Chonbuk National University, Jeonju, 54896 Republic of Korea
| | - Soo-Wang Hyun
- Korean Medicine Convergence Research Division, Korea Institute of Oriental Medicine, 1672 Yusengdae-ro, Daejeon, 34054 Republic of Korea
| | - Ik Soo Lee
- Korean Medicine Convergence Research Division, Korea Institute of Oriental Medicine, 1672 Yusengdae-ro, Daejeon, 34054 Republic of Korea
| | - Kyuhyung Jo
- Korean Medicine Convergence Research Division, Korea Institute of Oriental Medicine, 1672 Yusengdae-ro, Daejeon, 34054 Republic of Korea
| | - Young Sook Kim
- Korean Medicine Convergence Research Division, Korea Institute of Oriental Medicine, 1672 Yusengdae-ro, Daejeon, 34054 Republic of Korea
| | - Jin Sook Kim
- Korean Medicine Convergence Research Division, Korea Institute of Oriental Medicine, 1672 Yusengdae-ro, Daejeon, 34054 Republic of Korea
| | - Chan-Sik Kim
- Korean Medicine Convergence Research Division, Korea Institute of Oriental Medicine, 1672 Yusengdae-ro, Daejeon, 34054 Republic of Korea
- Korean Medicine Life Science, University of Science Technology (UST), Daejeon, 34113 Republic of Korea
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