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Zhang L, Zhou QM, Xu L, Xie X, Wang PX, Xie ZH, Li JL, Tu ZC. Extraction optimization and identification of four advanced glycation-end products inhibitors from lotus leaves and interaction mechanism analysis. Food Chem 2023; 414:135712. [PMID: 36808023 DOI: 10.1016/j.foodchem.2023.135712] [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: 05/11/2022] [Revised: 01/15/2023] [Accepted: 02/13/2023] [Indexed: 02/17/2023]
Abstract
Previous research indicated lotus leaves extract could effectively inhibit advanced glycation end-products (AGEs) formation, but the optimal extraction condition, bio-active compounds and interaction mechanism remain unclear. The current study was designed to optimize the extraction parameters of AGEs inhibitors from lotus leaves by bio-activity-guided approach. The bio-active compounds were enriched and identified, the interaction mechanisms of inhibitors with ovalbumin (OVA) were investigated by fluorescence spectroscopy and molecular docking. The optimum extraction parameters were solid-liquid ratio of 1:30, ethanol concentration of 70 %, ultrasonic time of 40 min, temperature of 50 °C, and power of 400 W. Isoquercitrin, hyperoside, astragalin, and trifolin were identified from the 80 % ethanol fraction of lotus leaves (80HY). Hyperoside and isoquercitrin were dominant AGEs inhibitors and accounted for 55.97 % of 80HY. Isoquercitrin, hyperoside, trifolin interacted with OVA via the same mechanism, hyperoside exhibited the strongest affinity, trifolin caused the most conformational changes.
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Affiliation(s)
- Lu Zhang
- National R&D Center of Freshwater Fish Processing and Engineering Research Center of Freshwater Fish High-value Utilization of Jiangxi, College of Life Science, Jiangxi Normal University, Nanchang, China; Jiangxi Deshang Pharmaceutical Co., Ltd., Yichun, Jiangxi 331208, China.
| | - Qi-Ming Zhou
- National R&D Center of Freshwater Fish Processing and Engineering Research Center of Freshwater Fish High-value Utilization of Jiangxi, College of Life Science, Jiangxi Normal University, Nanchang, China
| | - Liang Xu
- National R&D Center of Freshwater Fish Processing and Engineering Research Center of Freshwater Fish High-value Utilization of Jiangxi, College of Life Science, Jiangxi Normal University, Nanchang, China
| | - Xing Xie
- National R&D Center of Freshwater Fish Processing and Engineering Research Center of Freshwater Fish High-value Utilization of Jiangxi, College of Life Science, Jiangxi Normal University, Nanchang, China
| | - Pei-Xin Wang
- National R&D Center of Freshwater Fish Processing and Engineering Research Center of Freshwater Fish High-value Utilization of Jiangxi, College of Life Science, Jiangxi Normal University, Nanchang, China
| | - Zuo-Hua Xie
- Jiangxi Deshang Pharmaceutical Co., Ltd., Yichun, Jiangxi 331208, China
| | - Jin-Lin Li
- National R&D Center of Freshwater Fish Processing and Engineering Research Center of Freshwater Fish High-value Utilization of Jiangxi, College of Life Science, Jiangxi Normal University, Nanchang, China.
| | - Zong-Cai Tu
- National R&D Center of Freshwater Fish Processing and Engineering Research Center of Freshwater Fish High-value Utilization of Jiangxi, College of Life Science, Jiangxi Normal University, Nanchang, China; State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China
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Purification Process and In Vitro and In Vivo Bioactivity Evaluation of Pectolinarin and Linarin from Cirsium japonicum. Molecules 2022; 27:molecules27248695. [PMID: 36557828 PMCID: PMC9780979 DOI: 10.3390/molecules27248695] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 11/30/2022] [Accepted: 12/05/2022] [Indexed: 12/13/2022] Open
Abstract
Pectolinarin and linarin are two major flavone O-glycosides of Cirsium japonicum, which has been used for thousands of years in traditional Chinese medicine. Pharmacological research on pectolinarin and linarin is meaningful and necessary. Here, a process for the purification of pectolinarin and linarin from C. japonicum was established using macroporous resin enrichment followed by prep-HPLC separation. The results show the purity of pectolinarin and linarin reached 97.39% and 96.65%, respectively. The in vitro bioactivities result shows the ORAC values of pectolinarin and linarin are 4543 and 1441 µmol TE/g, respectively, meanwhile their inhibition rate of BSA-MGO-derived AGEs is 63.58% and 19.31% at 2 mg/mL, which is 56.03% and 30.73% in the BSA-fructose system, respectively. The COX-2 inhibition rate at 50 µg/mL of linarin and pectolinarin reached 55.35% and 40.40%, respectively. Furthermore, the in vivo bioassay combining of histopathologic evaluation and biochemical analysis of liver glutamic oxaloacetic transaminase, serum creatinine and TNF-α show pectolinarin can alleviate lipopolysaccharide (LPS)-induced acute liver and kidney injury in mice. Metabolomics analysis shows that pectolinarin attenuates LPS-challenged liver and kidney stress through regulating the arachidonic acid metabolism and glutathione synthesis pathways. Collectively, our work presents a solid process for pectolinarin and linarin purification and has discovered a promising natural therapeutic agent-pectolinarin.
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Zhao L, Jin X, Li Y, Yu Y, He L, Liu R. Effects of A-type oligomer procyanidins on protein glycation using two glycation models coupled with spectroscopy, chromatography, and molecular docking. Food Res Int 2022; 155:111068. [DOI: 10.1016/j.foodres.2022.111068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 02/07/2022] [Accepted: 02/23/2022] [Indexed: 11/04/2022]
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Xu L, Zhang L, Li YH, Li LY, Xie ZH, Tu ZC. Inhibitory activity and mechanism of guavinoside B from guava fruits against α-glucosidase: Insights by spectroscopy and molecular docking analyses. J Food Biochem 2022; 46:e14101. [PMID: 35170060 DOI: 10.1111/jfbc.14101] [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: 09/08/2021] [Revised: 12/10/2021] [Accepted: 01/05/2022] [Indexed: 11/30/2022]
Abstract
Guavinoside B (GUB) is the main active substance in guava fruit and shows promising biological activities. In this study, the inhibitory activity and mechanism of GUB on α-glucosidase were studied by using spectroscopic techniques, kinetic analysis, and molecular docking. Results indicated that GUB possessed significant inhibition ability on α-glucosidase, which was about 10 times that of acarbose. The GUB was a mixed-type inhibitor, which suppressed the activity of α-glucosidase through a reversible process. Fluorescence analysis revealed that GUB quenched the fluorescence of α-glucosidase statically, the formation of GUB-α-glucosidase complex was a spontaneous and exothermic process, van der Waals forces, hydrogen bonding, and hydrophobic interaction were the predominant driving forces, only one single-binding site on α-glucosidase was involved in the binding process. GUB inserted into the hydrophobic pocket of α-glucosidase with 11 hydrogen bonds and two π-π stacking formed. The presence of GUB changed the microenvironment near the fluorescent amino acids of α-glucosidase, and the structure of α-glucosidase was slightly changed, eventually leading to the decrease of α-glucosidase activity. PRACTICAL APPLICATIONS: Diabetes mellitus (DM) is a worldwide chronic metabolic disease threatening human health seriously. Guava fruit is a popular fruit, and its extracts were reported to show many biological activities. GUB is the main benzophenone glycoside in guava fruits. However, the inhibitory activity and mechanism of its specific active compound GUB are still unclear. Studies have shown that GUB could reversibly inhibit the activity of α-glucosidase, and its inhibitory ability was about 10 times that of acarbose. The kinetics and mechanism of inhibition were revealed. These will facilitate the further research and application of guava fruit and GUB in functional and healthy foods against hyperglycinaemia or even DM.
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Affiliation(s)
- Liang Xu
- National R&D Center of Freshwater Fish Processing, College of Life Science, Jiangxi Normal University, Nanchang, China.,Jiangxi General Institute Testing and Certification Industry Product Testing Institute, Nanchang, China
| | - Lu Zhang
- National R&D Center of Freshwater Fish Processing, College of Life Science, Jiangxi Normal University, Nanchang, China.,Jiangxi Deshang Pharmaceutical Co., Ltd., Yichun, China
| | - Yi-Hua Li
- National R&D Center of Freshwater Fish Processing, College of Life Science, Jiangxi Normal University, Nanchang, China
| | - Li-Ya Li
- Institute of Microbial Pharmaceuticals, College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Zuo-Hua Xie
- Jiangxi Deshang Pharmaceutical Co., Ltd., Yichun, China
| | - Zong-Cai Tu
- National R&D Center of Freshwater Fish Processing, College of Life Science, Jiangxi Normal University, Nanchang, China
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Parrot I, Bisi H, Folliard A, Bonnard M. Volatile Compounds from Flowers of Elaeagnus x submacrophylla Servett.: Extraction, Identification of Flavonoids, and Antioxidant Capacity. Chempluschem 2021; 86:1623-1634. [PMID: 34907673 DOI: 10.1002/cplu.202100443] [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: 10/04/2021] [Revised: 11/30/2021] [Indexed: 11/07/2022]
Abstract
Beneficial to the ecosystem and with significant potential in permaculture, Elaeagnus x submacrophylla Servett. was studied here mainly for the identification of its floral odorants. After olfactory evaluation and determination of the volatile profile of freshly picked flowers by headspace/solid phase microextraction coupled with gas chromatography/mass spectrometry, an ethanolic extract was prepared and investigated for its antioxidant capacity. Unusual molecules were identified in the floral headspace, such as isochavicol or chrysanthemum acetate. The evaluation of the in vitro free radical scavenging capacity (from 0.4 to 1.3 mmol TE/g) and total phenolic content (65.1 mg GAE/g) of the extract pointed out a promising antioxidant activity, potentially related to the identification of several flavonoid glycosides. These results have to be considered in the context of the ever-increasing need to produce innovative natural extracts with notably interesting claims for the cosmetic field.
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Affiliation(s)
| | - Hélène Bisi
- IBMM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
| | - Arnaud Folliard
- Département d'Enseignement Chimie, Faculté des Sciences, Université de Montpellier, 34 095, Montpellier, France
| | - Michel Bonnard
- IBMM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
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Peng CY, Zhu HD, Zhang L, Li XF, Zhou WN, Tu ZC. Urolithin A alleviates advanced glycation end-product formation by altering protein structures, trapping methylglyoxal and forming complexes. Food Funct 2021; 12:11849-11861. [PMID: 34734623 DOI: 10.1039/d1fo02631c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Urolithin A (UroA) is a first-in-class natural compound derived from the gut microbiota-derived metabolites of ellagitannins. This research for the first time evaluates the mechanisms of UroA inhibiting advanced glycation end-product (AGE) formation by fluorescence spectroscopy, molecular docking, liquid chromatography (LC) and LC-Oribitrap tandem mass spectrometry. The results indicated that UroA exhibited a good suppression effect on the formation of AGEs in human serum albumin (HSA)-fructose and HSA-methylglyoxal (MGO) systems. Further mechanism analysis revealed that UroA alleviated AGE formation by changing the conformational structure of HSA, trapping reactive MGO to form mono-MGO-UroA complexes, promoting the exposure of chromophores to a more hydrophobic micro-environment, and forming stable UroA-HSA complexes. UroA bound with HSA in an equimolar manner, the binding was an exothermic spontaneous process, subdomain IIIA was the preferred binding pocket, and hydrogen bonding, hydrophobic interactions and van der Waals forces were the major interaction forces. The number of glycation sites detected in glycated HSA was reduced by 1 and 2, respectively, when 181.82 and 363.64 μM UroA was added. These could provide an insight into the mechanism of UroA inhibiting HSA glycation, and highlight its value as a promising glycation inhibitor in the prevention of diabetic complications.
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Affiliation(s)
- Chun-Yan Peng
- National R&D center of Freshwater Fish Processing, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi 330022, China.
| | - Hua-Dong Zhu
- College of Life Science, Nanchang University, Nanchang 330031, China
| | - Lu Zhang
- National R&D center of Freshwater Fish Processing, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi 330022, China.
| | - Xiao-Feng Li
- National R&D center of Freshwater Fish Processing, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi 330022, China.
| | - Wen-Na Zhou
- National R&D center of Freshwater Fish Processing, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi 330022, China.
| | - Zong-Cai Tu
- National R&D center of Freshwater Fish Processing, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi 330022, China. .,State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China
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Xing X, Chun C, Xiong F, Rui-Hai L. Influence of Sargassum pallidum and the synergistic interaction mechanism of 6-gingerol and poricoic acid A on inhibiting ovalbumin glycation. Food Funct 2021; 12:9315-9326. [PMID: 34606550 DOI: 10.1039/d1fo01886h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
This study aimed to investigate the antiglycation capacity of Sargassum pallidum extract on ovalbumin (OVA) glycation, and the interaction mechanism of its active compounds, including 6-gingerol (6G) and poricoic acid A (PA). The results showed that Sargassum pallidum extract, PA and 6G had excellent suppression on the formation of fructosamine, 5-hydroxymethylfurfural (5-HMF), acrylamide and advanced glycation end products (AGEs), which was higher than aminoguanidine (AG). The combination of PA and 6G showed good synergistic effect on inhibiting the formation of AGEs. PA exhibited the strongest inhibition activity for protein glycation products, and the content of 5-HMF and acrylamide decreased from 277.44 and 10.60 μg mL-1 to 208.37 and 5.46 μg mL-1, respectively, at 30.08 × 10-5 M compared with the control group. 6G and PA quenched the fluorescence of OVA with a static mechanism, and enhanced the hydrophilic microenvironment of the tyrosine (Tyr) and tryptophan (Trp) residues. The binding of 6G and PA with OVA was spontaneous and driven by hydrogen bonds and van der Waals interactions. Molecular docking indicated that 6G and PA entered the hydrophobic cavity of OVA, and formed hydrogen bonds with Ser103, Leu101 and Thr 91. These findings suggested that Sargassum pallidum extract, PA and 6G have great potential as antiglycation inhibitors to treat diabetes complications in healthy food.
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Affiliation(s)
- Xie Xing
- SCUT-Zhuhai Institute of Modern Industrial Innovation, School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Chen Chun
- SCUT-Zhuhai Institute of Modern Industrial Innovation, School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China.
- Guangzhou Institute of Modern Industrial Technology, Nansha, 511458, China
- School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Engineering Research Center of Starch and Vegetable Protein Processing Ministry of Education, South China University of Technology, Guangzhou 510640, China
| | - Fu Xiong
- SCUT-Zhuhai Institute of Modern Industrial Innovation, School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China.
- Guangzhou Institute of Modern Industrial Technology, Nansha, 511458, China
- Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center), Guangzhou 510640, China
| | - Liu Rui-Hai
- Department of Food Science, Stocking Hall, Cornell University, Ithaca, NY, 14853, USA
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A Study on the Volatile Compounds in Elaeagnus angustifolia L. Flowers during Flowering Season by Gas Chromatography-Mass Spectrometry Coupled with Advanced Chemometrics. J FOOD QUALITY 2021. [DOI: 10.1155/2021/7111120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
The flowers of Elaeagnus angustifolia L. have been used as a homologous variety in China, whose quality seriously relies on the compositions during the flowering period. Unfortunately, studies on the variations of volatile compounds during the flowering season are rarely reported. Herein, a gas chromatography-mass spectrometry-based untargeted metabolomic methodology was proposed for the comprehensive analysis of volatile compounds in E. angustifolia flowers to classify various flowering stages. Samples from four flowering stages were collected, including the initial bloom stage, pre-full bloom stage (70–80% of flowers), full bloom stage, and ending of the bloom stage. Simultaneous distillation extraction was used for the extraction of volatile compounds in the flowers, which was then analyzed by a newly developed chemometric data analysis tool, autoGCMSDataAnal. An advantage of the developed methodology is that compounds can be accurately screened and identified. Finally, 59 compounds that showed significant difference among four flowering stages were screened and 31 compounds were identified. Sample clustering results from principal component analysis and hierarchical clustering analysis suggested that flowers from the pre-full bloom stage and full bloom stage may be more suitable when used as raw materials for industrial products.
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Yuca H, Özbek H, Demirezer LÖ, Kasil HG, Güvenalp Z. trans-Tiliroside: A potent α-glucosidase inhibitor from the leaves of Elaeagnus angustifolia L. PHYTOCHEMISTRY 2021; 188:112795. [PMID: 34044297 DOI: 10.1016/j.phytochem.2021.112795] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 04/18/2021] [Accepted: 04/23/2021] [Indexed: 06/12/2023]
Abstract
Elaeagnus angustifolia L. (Elaeagnaceae) is an important medicinal plant associated with numerous pharmacological activities. Its leaves are used as a therapeutic agent in traditional medicinal systems to treat diabetes. However, the active compounds responsible for the beneficial effects of E. angustifolia remain unclear. In this study, we determined the bioactive profile of E. angustifolia leaves using open column chromatography and semi-preparative HPLC. Further, we sought to determine its α-glucosidase and α-amylase inhibitory activities, and its DPPH and ABTS radical-scavenging activities. Four undescribed flavonol glycosides, igdoside A-D, and four known glucosides were isolated from the ethyl acetate and n-butanol extracts of E. angustifolia leaves. Thereafter, the compound structures were identified using spectroscopic methods, including NMR and mass spectrometry. Of the compounds extracted, kaempferol-3-O-(6″-trans-p-coumaroyl)-β-D-glucopyranoside (trans-tiliroside), exhibited the highest α-glucosidase inhibitory activity with an IC50 value of 2128 ± 63 μM compared to the positive control, acarbose (IC50 = 6561 ± 207 μM). trans-Tiliroside was also found to exhibit potent scavenging activity against the ABTS radical, with an IC50 value of 5 ± 0 μM, compared to the positive controls, trolox (31 ± 1 μM) and α-tocopherol (50 ± 1 μM). In addition, isorhamnetin-3-O-β-D-galactopyranoside (IC50 = 6 ± 0 μM) and astragalin (IC50 = 6 ± 0 μM) showed similar ABTS radical-scavenging activity as trans-tiliroside. Based on HPLC, the content of trans-tiliroside was 9.69% in the ethyl acetate extract, 1.04% in decoction, 0.34% in 70% methanol extract, and 0.23% in infusion. None of the extracts and compounds showed α-amylase inhibition or DPPH-scavenging activity.
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Affiliation(s)
- Hafize Yuca
- Department of Pharmacognosy, Faculty of Pharmacy, Ataturk University, 25240, Erzurum, Turkey; Medicinal and Aromatic Plant and Drug Research Center, Ataturk University, 25240, Erzurum, Turkey.
| | - Hilal Özbek
- Department of Pharmacognosy, Faculty of Pharmacy, Ataturk University, 25240, Erzurum, Turkey; Medicinal and Aromatic Plant and Drug Research Center, Ataturk University, 25240, Erzurum, Turkey
| | - Lütfiye Ömür Demirezer
- Department of Pharmacognosy, Faculty of Pharmacy, Hacettepe University, 06100, Ankara, Turkey
| | - Handan Gökben Kasil
- Department of Pharmacognosy, Faculty of Pharmacy, Ataturk University, 25240, Erzurum, Turkey
| | - Zühal Güvenalp
- Department of Pharmacognosy, Faculty of Pharmacy, Ataturk University, 25240, Erzurum, Turkey; Medicinal and Aromatic Plant and Drug Research Center, Ataturk University, 25240, Erzurum, Turkey
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Xing X, Chun C, Qiang H, Xiong F, Rui-Hai L. Investigation into the mechanisms of quercetin-3-O-glucuronide inhibiting α-glucosidase activity and non-enzymatic glycation by spectroscopy and molecular docking. Food Funct 2021; 12:7825-7835. [PMID: 34232231 DOI: 10.1039/d1fo01042e] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The inhibition of α-glucosidase and glycation is closely related to the treatment of type 2 diabetes mellitus (DM) and its complications. In this study, quercetin-3-O-glucuronide (Q3GA) showed reversible and mixed-mode inhibition of α-glucosidase activity, with an IC50 value of 108.11 ± 4.61 μM. This was mainly due to the spontaneous formation of Q3GA-α-glucosidase driven by hydrogen bonding and van der Waals forces, which could change the microenvironments and conformation of α-glucosidase. In addition, Q3GA showed strong suppression of the formation of glycation products, including fructosamine, advanced glycation end products (AGEs), and 5-hydroxymethylfurfural (5-HMF). Molecular docking analysis demonstrated that Q3GA entered the hydrophobic pocket of ovalbumin to form six hydrogen bonds with amino acid residues, which affected the glycation process. These findings indicate that Q3GA is an excellent inhibitor of α-glucosidase and glycation, and promote its development as a drug or dietary supplement for DM.
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Affiliation(s)
- Xie Xing
- SCUT-Zhuhai Institute of Modern Industrial Innovation, School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China.
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Paudel SB, Han AR, Choi H, Nam JW. Phytochemical constituents of leaves and twigs of Elaeagnus umbellata. BIOCHEM SYST ECOL 2020. [DOI: 10.1016/j.bse.2020.104178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Du PC, Tu ZC, Wang H, Hu YM. Mechanism of Selenium Nanoparticles Inhibiting Advanced Glycation End Products. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:10586-10595. [PMID: 32866004 DOI: 10.1021/acs.jafc.0c03229] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Selenium nanoparticles (SeNPs) have been applied in fields of nanobiosensors, environment, nanomedicine, etc. as a result of their excellent characteristics. Early studies had shown that SeNPs have certain inhibition ability against glycation, but the inhibition mechanism, especially for the influence of SeNPs on the reaction activity of glycation sites, remains unclear. The aim of the presented research was to reveal the effects of SeNPs on the β-lactoglobulin (β-Lg)/d-ribose glycation system at the molecular level and explore the possible inhibitory mechanism of SeNPs on the formation of advanced glycation end products (AGEs) by analyzing the glycation sites via high-performance liquid chromatography (HPLC)-Orbitrap-tandem mass spectrometry (MS/MS). Changes in contents of AGE formation and free amino acid contents had indicated that SeNPs could significantly slow the glycation process, thus attenuating the formation of AGEs. HPLC-Orbitrap-MS/MS analysis revealed that, at 6, 12, and 24 h, the number of glycation sites of glycated β-Lg decreased from 7, 7, and 9 to 5, 5, and 6 after the intervention of SeNPs, respectively. The glycation extent of each glycation site was controlled, and the dual-glycation ability of K8, K14, K47, K91, and K101 was changed. All of these results confirmed that SeNPs could indeed slow the process of protein glycation at the molecular level. This may be the reason for SeNPs reducing the formation of AGEs during glycation. Therefore, this study shed light on the insight of how SeNPs reduce the formation of AGEs.
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Affiliation(s)
- Peng-Cheng Du
- State Key Laboratory of Food Science and Technology, Nanchang University, 235 Nanjing East Road, Nanchang, Jiangxi 330047, People's Republic of China
| | - Zong-Cai Tu
- State Key Laboratory of Food Science and Technology, Nanchang University, 235 Nanjing East Road, Nanchang, Jiangxi 330047, People's Republic of China
- National R&D Center of Freshwater Fish Processing and Engineering Research Center of Freshwater Fish High-Value Utilization of Jiangxi Province, Jiangxi Normal University, Nanchang, Jiangxi 330022, People's Republic of China
| | - Hui Wang
- State Key Laboratory of Food Science and Technology, Nanchang University, 235 Nanjing East Road, Nanchang, Jiangxi 330047, People's Republic of China
| | - Yue-Ming Hu
- State Key Laboratory of Food Science and Technology, Nanchang University, 235 Nanjing East Road, Nanchang, Jiangxi 330047, People's Republic of China
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Zhang L, Zhou WN, Tu ZC, Yang SH, Xu L, Yuan T. Influence of Hydroxyl Substitution on the Suppression of Flavonol in Harmful Glycation Product Formation and the Inhibition Mechanism Revealed by Spectroscopy and Mass Spectrometry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:8263-8273. [PMID: 32662984 DOI: 10.1021/acs.jafc.0c03163] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Quercetin (Que), kaempferol (Kaem), isorhamnetin (Irh), and myricetin (Myri) are typical flavonols that are abundant in plant resources. This research investigated their ability in attenuating harmful glycation product formation and the effect of hydroxyl substitution. The inhibition mechanisms were elucidated by fluorescence spectroscopy and nano-liquid chromatography Orbitrap tandem mass spectrometry. The results indicated that the 3'-OH on the B-ring is critical in alleviating harmful glycation product formation, methylation reduced its inhibition, and the 5'-OH showed much less contribution than the 3'-OH. Que showed the strongest suppression on initial product, 5-hydroxymethylfurfural, and advanced glycation end product formation, with the corresponding percentage inhibitions at 36.58 μM of 81.1, 56.9, and 95.4%. Que and Myri also clearly inhibited fructosamine and acrylaminde production, while no suppression was observed by Irh and Kaem. The number of glycated sites was reduced from ten to seven, five, six, and nine, respectively, when 36.58 μM Que, Myri, Kaem, and Irh was added. Suppressing the conformational changes of ovalbumin induced by glycation, trapping dicarbonyl compounds, altering the microenvironment around tryptophan, and reducing the glycation activity of potential sites were the major inhibition mechanisms. These results suggest that Que and Myri may be promising natural agents for inhibiting harmful glycation and provide theoretical support for the effective screening of natural antiglycation reagents.
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Affiliation(s)
- Lu Zhang
- National R&D Center for Freshwater Fish Processing, and Engineering Research Center of Freshwater Fish High-value Utilization of Jiangxi Province, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Wen-Na Zhou
- National R&D Center for Freshwater Fish Processing, and Engineering Research Center of Freshwater Fish High-value Utilization of Jiangxi Province, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Zong-Cai Tu
- National R&D Center for Freshwater Fish Processing, and Engineering Research Center of Freshwater Fish High-value Utilization of Jiangxi Province, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China
| | - Si-Hang Yang
- National R&D Center for Freshwater Fish Processing, and Engineering Research Center of Freshwater Fish High-value Utilization of Jiangxi Province, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Liang Xu
- National R&D Center for Freshwater Fish Processing, and Engineering Research Center of Freshwater Fish High-value Utilization of Jiangxi Province, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Tao Yuan
- National R&D Center for Freshwater Fish Processing, and Engineering Research Center of Freshwater Fish High-value Utilization of Jiangxi Province, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
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Angustifolinoid B, a flavonoid glycoside dimer with cyclobutane from Elaeagnus angustifolia flowers. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151946] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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