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Yin H, Zhu J, Zhong Y, Wang D, Deng Y. Kinetic and thermodynamic-based studies on the interaction mechanism of novel R. roxburghii seed peptides against pancreatic lipase and cholesterol esterase. Food Chem 2024; 447:139006. [PMID: 38492305 DOI: 10.1016/j.foodchem.2024.139006] [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: 11/25/2023] [Revised: 03/02/2024] [Accepted: 03/09/2024] [Indexed: 03/18/2024]
Abstract
Pancreatic lipase (PL) and cholesterol esterase (CE) are vital digestive enzymes that regulate lipid digestion. Three bioactive peptides (LFCMH, RIPAGSPF, YFRPR), possessing enzyme inhibitory activities, were identified in the seed proteins of R. roxburghii. It is hypothesized that these peptides could inhibit the activities of these enzymes by binding to their active sites or altering their conformation. The results showed that LFCMH exhibited superior inhibitory activity against these enzymes compared to the other peptides. The inhibition mechanisms of the three peptides were identified as either competitive or mixed, according to inhibition models. Further studies have shown that peptides could bind to the active sites of enzymes, thus affecting their spatial conformation and restricting substrate entry into the active site. Molecular simulation further proved that hydrogen bonds and hydrophobic interactions played a vital role in the binding of peptides to enzymes. This study enriches our understanding of interaction mechanisms of peptides on PL and CE.
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Affiliation(s)
- Hao Yin
- Department of Food Science & Technology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China; Shanghai Jiao Tong University Yunnan (Dali) Research Institute, Dali, Yunnan 671000, China
| | - Jiangxiong Zhu
- Department of Food Science & Technology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Yu Zhong
- Department of Food Science & Technology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Danfeng Wang
- Department of Food Science & Technology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Yun Deng
- Department of Food Science & Technology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China; Shanghai Jiao Tong University Yunnan (Dali) Research Institute, Dali, Yunnan 671000, China.
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2
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Zhang M, Liu J, Gao Y, Zhao B, Xu ML, Zhang T. Se site targeted-two circles antioxidant in GPx4-like catalytic peroxide degradation by polyphenols (-)-epigallocatechin gallate and genistein using SERS. Food Chem X 2024; 22:101387. [PMID: 38665629 PMCID: PMC11043887 DOI: 10.1016/j.fochx.2024.101387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 04/11/2024] [Accepted: 04/11/2024] [Indexed: 04/28/2024] Open
Abstract
A Se site targeted-two circles antioxidant of polyphenols EGCG and genistein in glutathione peroxidase 4 (GPx4)-like catalytic peroxide H2O2 and cumene hydroperoxide degradation was demonstrated by surface-enhanced Raman scattering (SERS). Se atom's active center is presenting a 'low-oxidation' and a 'high-oxidation' catalytic cycle. The former is oxidized to selenenic acid (SeO-) with a Raman bond at 619/ 610 cm-1 assigned to the νO - Se by the hydroperoxide substrate at 544/ 551 cm-1 assigned to ωHSeC decreased. Under oxidative stress, the enzyme shifted to 'high-oxidation' catalytic cycle, in which GPx4 shuttles between R-SeO- and R-SeOO- with a Raman intensity of bond at 840/ 860 cm-1 assigned to νO[bond, double bond]Se. EGCG could act as a reducing agent both in H2O2 and Cu-OOH degradation, while, genistein can only reduce Cu-OOH, because it binds more readily to the selenium site in GPx4 than EGCG with a closer proximity, therefore may affect its simultaneous binding to coenzymes.
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Affiliation(s)
- Mengmeng Zhang
- Jilin Provincial Key Laboratory of Nutrition and Functional Food/ College of Food Science and Engineering, Jilin University, Changchun 130062, PR China
| | - Jingbo Liu
- Jilin Provincial Key Laboratory of Nutrition and Functional Food/ College of Food Science and Engineering, Jilin University, Changchun 130062, PR China
| | - Yu Gao
- College of Plant Protection, Jilin Agricultural University, Changchun 130118, PR China
| | - Bing Zhao
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, PR China
| | - Meng-Lei Xu
- Jilin Provincial Key Laboratory of Nutrition and Functional Food/ College of Food Science and Engineering, Jilin University, Changchun 130062, PR China
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, PR China
| | - Ting Zhang
- Jilin Provincial Key Laboratory of Nutrition and Functional Food/ College of Food Science and Engineering, Jilin University, Changchun 130062, PR China
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3
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Zhu J, Yin H, Zheng S, Yu H, Yang L, Wang L, Geng X, Deng Y. Tag-free fluorometric aptasensor for detection of chromium(VI) in foods via SYBR Green I signal amplification and aptamer structure transition. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024. [PMID: 38828647 DOI: 10.1002/jsfa.13631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Revised: 04/08/2024] [Accepted: 05/02/2024] [Indexed: 06/05/2024]
Abstract
BACKGROUND In response to growing concerns regarding heavy metal contamination in food, particularly chromium (Cr)(VI) contamination, this study presented a simple, sensitive and practical method for Cr(VI) detection. RESULTS A magnetic separation-based capture-exponential enrichment ligand system evolution (SELEX) method was used to identify and characterize DNA aptamers with a high affinity for Cr(VI). An aptamer, Cr-15, with a dissociation constant (Kd) of 4.42 ± 0.44 μmol L-1 was obtained after only eight rounds of selection. Further innovative methods combining molecular docking, dynamic simulation and thermodynamic analysis revealed that CrO4 2- could bind to the 19th and 20th guanine bases of Cr-15 via hydrogen bonds. Crucially, a label-free fluorometric aptasensor based on SYBR Green I was successfully constructed to detect CrO4 2-, achieving a linear detection range of 60-300 nmol L-1 with a lower limit of detection of 44.31 nmol L-1. Additionally, this aptasensor was able to quantitatively detect CrO4 2- in grapes and broccoli within 40 min, with spike recovery rates ranging from 89.22% to 108.05%. The designed fluorometric aptasensor exhibited high selectivity and could detect CrO4 2- in real samples without sample processing or target pre-enrichment. CONCLUSION The aptasensor demonstrated its potential as a reliable tool for monitoring Cr(VI) contamination in fruit and vegetable products. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Jiangxiong Zhu
- Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
- Yunnan Dali Research Institute of Shanghai Jiao Tong University, Shanghai, China
| | - Hao Yin
- Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
- Yunnan Dali Research Institute of Shanghai Jiao Tong University, Shanghai, China
| | - Sisi Zheng
- Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Hong Yu
- Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
- Yunnan Dali Research Institute of Shanghai Jiao Tong University, Shanghai, China
| | - Linnan Yang
- School of Big Data, Yunnan Agricultural University, Kunming, China
| | - Lumei Wang
- Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
- Yunnan Dali Research Institute of Shanghai Jiao Tong University, Shanghai, China
| | - Xueqing Geng
- Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Yun Deng
- Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
- Yunnan Dali Research Institute of Shanghai Jiao Tong University, Shanghai, China
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4
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Ohiduzzaman M, Khan M, Khan K, Paul B. Biosynthesis and characterizations of silver nanoparticles by using green banana peel extract: Evaluation of their antibacterial and electrical performances. Heliyon 2024; 10:e31140. [PMID: 38778959 PMCID: PMC11109888 DOI: 10.1016/j.heliyon.2024.e31140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 05/09/2024] [Accepted: 05/10/2024] [Indexed: 05/25/2024] Open
Abstract
Biosynthesized silver nanoparticles (Ag NPs) hold tremendous promise in nano-bioscience, with applications spanning engineering, science, and industry. This study delves into their fabrication process, crystallographic characteristics, and nanostructures. Employing green banana peel extract (GBPE), Ag NPs were synthesized. Various analytical techniques, such as UV-Vis absorption spectrophotometry (UV), X-ray diffraction (XRD), Gas chromatography-mass spectrometry (GC-MS), Field emission scanning electron microscopy (FESEM), Fourier-transform infrared spectroscopy (FTIR), and Transmission electron microscopy (TEM) elucidate their attributes. UV-visible analysis reveals a 413 nm absorption band due to surface plasmon resonance. The Ag NPs exhibit a face-centered cubic structure with an average crystallite size of 45.87 nm. Lattice parameters and dislocation density are also determined. When tested against harmful bacteria, such as E. coli and S. epidermidis, advanced microscopy reveals a median size of particles of 55.12 nm and demonstrates their antibacterial characteristics. These environmentally benign Ag NPs also improve the efficiency of bio-electrochemical cells (BECs), opening the door to large-scale manufacturing at a reasonable cost and broadening the range of possible uses.
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Affiliation(s)
- Md Ohiduzzaman
- Department of Physics, Jagannath University, Dhaka, 1100, Bangladesh
- Department of Physics, Jashore University of Science and Technology, Jashore, 7408, Bangladesh
| | - M.N.I. Khan
- Materials Science Division, Atomic Energy Centre, Dhaka, Bangladesh
| | - K.A. Khan
- Department of Physics, Jagannath University, Dhaka, 1100, Bangladesh
- Bangamata Sheikh Fojilatunnesa Mujib Science & Technology University, Jamalpur, Bangladesh
| | - Bithi Paul
- Department of Physics, American International University-Bangladesh, Dhaka, Bangladesh
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5
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Ohiduzzaman M, Khan M, Khan K, Paul B. Biosynthesis of silver nanoparticles by banana pulp extract: Characterizations, antibacterial activity, and bioelectricity generation. Heliyon 2024; 10:e25520. [PMID: 38327438 PMCID: PMC10848009 DOI: 10.1016/j.heliyon.2024.e25520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/24/2024] [Accepted: 01/29/2024] [Indexed: 02/09/2024] Open
Abstract
Here, green banana pulp extract (PE) has been used as a bio-reducing agent for the reduction of silver ions to silver nanoparticles (AgNPs). Bio-synthesized AgNPs were characterized by using UV, XRD, FEEM, TEM, and FTIR analysis. The face-centered cubic structures of AgNPs were formed with an average crystallite size of 31.26 nm and an average particle size of 42.97 nm. In this report, the electrical activities of green synthesized AgNPs have been evaluated along with the antibacterial activities. The antibacterial activities of AgNPs were evaluated against two pathogenic bacteria: Escherichia coli (gram-negative) and Staphylococcus epidermidis (gram-positive). AgNPs were added to the electrochemical cell and results demonstrated the improvement of power of the electrochemical cell. Green synthesized AgNPs showed excellent antibacterial activities against both gram-positive and negative bacteria and most importantly the NPs played an important role as an effective catalyst to enhance the electrical performance of bio-electrochemical cells. These significant findings may help in the advancement of nanotechnology in biomedical applications as well as in the creation of cheap and eco-friendly power generation devices.
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Affiliation(s)
- Md Ohiduzzaman
- Department of Physics, Jagannath University, Dhaka 1100, Bangladesh
- Department of Physics, Jashore University of Science and Technology, Jashore 7408, Bangladesh
| | - M.N.I. Khan
- Materials Science Division, Atomic Energy Centre, Dhaka, Bangladesh
| | - K.A. Khan
- Department of Physics, Jagannath University, Dhaka 1100, Bangladesh
- Bangamata Sheikh Fojilatunnesa Mujib Science & Technology University, Jamalpur, Bangladesh
| | - Bithi Paul
- Department of Physics, American International University-Bangladesh, Dhaka, Bangladesh
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6
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Che H, Yi J, Zhao X, Yu H, Wang X, Zhang R, Li X, Fu J, Li Q. Characterization of PKCα-rutin interactions and their application as a treatment strategy for pulmonary arterial hypertension by inhibiting ferroptosis. Food Funct 2024; 15:779-793. [PMID: 38126185 DOI: 10.1039/d3fo01306e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
As a common plant-derived dietary flavonoid, rutin receives widespread attention because of its good antioxidant bioactivities. Protein kinase Cα (PKCα) is a serine/threonine kinase that is involved in uncountable cellular processes, among which ferroptosis, a novel form of cell death, is triggered by lipid peroxidation and has been reported to be associated with pulmonary arterial hypertension (PAH). But it is still not well appreciated how rutin inhibits ferroptosis in PAH and what function PKCα has in this process. In this study, we first observed whether rutin could prevent PAH by attenuating ferroptosis with a PAH animal model and pulmonary artery smooth muscle cells (PASMCs) under hypoxia. Mitochondrial metabolomics and network pharmacology were employed to clarify the metabolic alterations and screen target proteins, and the results showed that PKCα was a vital node in rutin regulating mitochondrial metabolism related to ferroptosis in PAH. Based on molecular docking and multispectral analysis, we found that rutin could directly interact with PKCα through hydrogen bonds, which could induce static quenching, and then influence the secondary structure of PKCα. In conclusion, these findings mainly point to a novel mechanism that rutin protects PAH rats by modifying the structure and altering the activity of PKCα, and thus suppressing ferroptosis. This work reveals that the interaction behaviors between small molecules and bio-macromolecules are a critical factor to develop natural biological active ingredients and gives an insight into the potential applications of flavonoids in health and disease.
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Affiliation(s)
- Haixia Che
- Department of Pharmaceutical Analysis and Analytical Chemistry, College of Pharmacy, Harbin Medical University, Harbin 150081, Heilongjiang, China.
| | - Jie Yi
- Department of Pharmaceutical Analysis and Analytical Chemistry, College of Pharmacy, Harbin Medical University, Harbin 150081, Heilongjiang, China.
| | - Xiaoting Zhao
- Department of Pharmaceutical Analysis and Analytical Chemistry, College of Pharmacy, Harbin Medical University, Harbin 150081, Heilongjiang, China.
| | - Hong Yu
- Department of Pharmaceutical Analysis and Analytical Chemistry, College of Pharmacy, Harbin Medical University, Harbin 150081, Heilongjiang, China.
| | - Xianyao Wang
- Department of Pharmaceutical Analysis and Analytical Chemistry, College of Pharmacy, Harbin Medical University, Harbin 150081, Heilongjiang, China.
| | - Rui Zhang
- Department of Pharmaceutical Analysis and Analytical Chemistry, College of Pharmacy, Harbin Medical University, Harbin 150081, Heilongjiang, China.
| | - Xin Li
- Department of Epidemiology, Public Health College, Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Jia Fu
- College of Medical Laboratory Science and Technology, Harbin Medical University at Daqing, Heilongjiang Province, China
| | - Qian Li
- Department of Pharmaceutical Analysis and Analytical Chemistry, College of Pharmacy, Harbin Medical University, Harbin 150081, Heilongjiang, China.
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7
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Pan F, Li X, Tuersuntuoheti T, Zhao L, Liu M, Fang X, Peng W, Tian W. Self-assembled condensed tannins supramolecular system can adsorb cholesterol micelles to promote cholesterol excretion. Int J Biol Macromol 2023; 253:126549. [PMID: 37659485 DOI: 10.1016/j.ijbiomac.2023.126549] [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: 06/24/2023] [Revised: 08/14/2023] [Accepted: 08/24/2023] [Indexed: 09/04/2023]
Abstract
In this study, the cholesterol (CH)-lowering behavioral mechanisms and drivers of condensed tannins (CTs) were revealed using a molecular aggregation theoretical model combined with in vitro experiments, as well as the CH-lowering effects of CTs validated based on animal experiments. Theoretical model results indicated that CTs can spontaneously aggregate to form supramolecular systems, can break CH micelles and form larger aggregates, a behavior driven by van der Waals forces and hydrogen bonds; DLS and TEM results confirmed that the presence of CH leads to a larger particle size of CTs and the formation of large aggregates; thermodynamic analysis and ITC revealed that the adsorption of CH by CTs is a spontaneous reaction driven by hydrogen bonds and hydrophobic forces; Animal experiments and fecal biochemical parameters further confirmed that the intake of CTs can reduce CH absorption and promotes CH excretion. Overall, this study reveals the CH-lowering behavioral mechanism of CTs from the perspective of molecular aggregation behavior.
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Affiliation(s)
- Fei Pan
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100093, People's Republic of China
| | - Xiangxin Li
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100093, People's Republic of China.
| | - Tuohetisayipu Tuersuntuoheti
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, Beijing, 100048, People's Republic of China
| | - Lei Zhao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, Beijing, 100048, People's Republic of China
| | - Mengyao Liu
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100093, People's Republic of China
| | - Xiaoming Fang
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100093, People's Republic of China
| | - Wenjun Peng
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100093, People's Republic of China.
| | - Wenli Tian
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100093, People's Republic of China.
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8
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Pu Y, Chen L, He X, Cao J, Jiang W. Soluble polysaccharides decrease inhibitory activity of banana condensed tannins against porcine pancreatic lipase. Food Chem 2023; 418:136013. [PMID: 36989646 DOI: 10.1016/j.foodchem.2023.136013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 03/05/2023] [Accepted: 03/20/2023] [Indexed: 03/29/2023]
Abstract
The inhibition of soluble polysaccharides (SPs) (arabic gum, dextran and pectin from citrus) on the binding between banana condensed tannins (BCTs) and pancreatic lipase (PL) was studied from variant aspects. Molecular docking simulations predicted that BCTs strongly bound SPs and PL through non-covalent interactions. The experimental results showed that SPs reduced the inhibition of BCTs on PL, and the IC50 value increased. However, the addition of SPs did not change the inhibitory type of BCTs on PL, which all were non-competitive inhibition. BCTs quenched PL fluorescence through static quenching mechanism and changed the secondary structure of PL. The addition of SPs alleviated the trending. The effect of SPs on the binding of BCTs-PL was mainly due to the strong non-covalent interaction between SPs and BCTs. This study emphasized that attention should be paid to the counteracting effects of polysaccharides and polyphenols in dietary intake to maximize their respective roles.
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9
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Shen H, Wang J, Ao J, Ye L, Shi Y, Liu Y, Li M, Luo A. The inhibitory mechanism of pentacyclic triterpenoid acids on pancreatic lipase and cholesterol esterase. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.102341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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10
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Xiao Y, Huang Y, Long F, Yang D, Huang Y, Han Y, Wu Y, Zhong K, Bu Q, Gao H, Huang Y. Insight into structural characteristics of theabrownin from Pingwu Fuzhuan brick tea and its hypolipidemic activity based on the in vivo zebrafish and in vitro lipid digestion and absorption models. Food Chem 2022; 404:134382. [DOI: 10.1016/j.foodchem.2022.134382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 09/19/2022] [Accepted: 09/20/2022] [Indexed: 11/30/2022]
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11
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Zainul Z, Junaidi J, Nuzul SM, Bungawati A, Nasrul N, Hafid F. Implementation of Healthy Living Community Movement Supported Automatic Telehealth Machine for Public Health at Poltekkes Kemenkes Palu. Open Access Maced J Med Sci 2022. [DOI: 10.3889/oamjms.2022.8945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Background: Indonesia faces serious challenges from a double burden disease caused by changes in people's lifestyles. Since 2010, Non-communicable diseases (NCDs) include hypertension, stroke, heart disease, and diabetes have taken up a growing share of health-care resources. The coronavirus disease epidemic of 2019 (COVID 19) caused by the new coronavirus SARS-CoV2 is the most serious global health issue. Patients with COVID-19 had more hypertension, diabetes, and other cardiovascular diseases, which all require routine health monitoring. Health monitoring will greatly develop along with the development of technology and information 4.0. This includes nursing services in the future that will take advantage of developments in information technology.
Objective: This study aims to implement the healthy living community movement programs using Automatic Telehealth Machine (ATMs) as internet of things for health checking and education at Politeknik Kesehatan Kemenkes Palu.
Methods: This research method is a quasi-experimental intervention research. The population of study were 167 employees of Poltekkes Kemenkes Palu. Sampling process used simple random sampling method with sample size consist of 96 people. The study revealed that majority of respondents were gender and aged, physical activity was generally good, and fruits intake was also good. The measuring instrument used are ATMs device and a questionnaire that has been tested for validity and reliability. Analysis of research data using univariate test (frequency distribution) and bivariate test (t test or alternatives)
Results: The variables that were significantly related to systole were gender and age category (p = 0.03). The variables which were significantly related to diastole were gender (p = 0.02) and age category (p = 0.01). The results revealed that gender, age, physical activity and fruits intake was not associated with total cholesterol levels.
Conclusions: Automatic Telehealth Machine (ATMs) can be implemented for health checking and education in healthy living community movement programs
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12
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Exploring the binding mode between potassium bromate and Bovine serum Albumin: Multi-Spectroscopic and molecular modeling analysis. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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13
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Hu Y, Guo C, Lin Q, Hu J, Li X, Sang S, McClements DJ, Long J, Jin ZY, Wang J, Qiu C. Complexation of curcumin with cyclodextrins adjusts its binding to plasma proteins. Food Funct 2022; 13:8920-8929. [DOI: 10.1039/d2fo01531e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Curcumin shows poor bioaccessibility due to its poor water solubility that limiting its application in aqueous formulations, and the weak binding to plasma proteins that hindering its transportation to targeted...
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14
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Zhao S, Wu Y, Hu L. Identification and synthesis of selective cholesterol esterase inhibitor using dynamic combinatorial chemistry. Bioorg Chem 2021; 119:105520. [PMID: 34864280 DOI: 10.1016/j.bioorg.2021.105520] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/22/2021] [Accepted: 11/24/2021] [Indexed: 12/15/2022]
Abstract
In this study, the concept of dynamic combinatorial chemistry (DCC) was applied to explore novel cholesterol esterase (CEase) inhibitors. In the presence of enzyme, two substrates (A1H3 and A2H3) were amplified from the dynamic combinatorial library (DCL), which was generated through reversible acylhydrazone formation reaction. In the in vitro biological evaluation, compound A1H3 exhibited not only potent (IC50 in nanomolar range) but also selective inhibition (>120 folds of selectivity for CEase over AChE). Furthermore, the binding pattern and possible binding mechanism were investigated in the kinetic experiment and molecular docking study, respectively.
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Affiliation(s)
- Shuang Zhao
- School of Pharmacy, Jiangsu University, Zhenjiang, 301 Xuefu Rd., Zhenjiang, China
| | - Yao Wu
- School of Pharmacy, Jiangsu University, Zhenjiang, 301 Xuefu Rd., Zhenjiang, China
| | - Lei Hu
- School of Pharmacy, Jiangsu University, Zhenjiang, 301 Xuefu Rd., Zhenjiang, China.
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15
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Li X, Pu Y, Xu Y, Cao J, Jiang W. Potential Hypolipidemic Effects of Banana Condensed Tannins Through the Interaction with Digestive Juice Components Related to Lipid Digestion. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:8703-8713. [PMID: 34324317 DOI: 10.1021/acs.jafc.1c02794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
An in vitro intestinal model was used to evaluate the impact of banana condensed tannins (BCT) on the digestion of lipids (fat and cholesterol). BCT significantly suppressed the digestion of fat and cholesterol by interacting with digestive juice components. The interactions of BCT with a digestive juice mixture and its components (including bile acid, lipase, cholesterol esterase, CaCl2, NaCl, and cholesterol) were analyzed using turbidity, isothermal titration calorimetry, particle size distribution, zeta potential, and molecular docking analyses. The results showed that BCT reduced the digestion of lipids mainly via interaction with lipase, cholesterol esterase, bile acid, and cholesterol. Electrostatic CT-calcium ion complexes might reduce the extent of lipid digestion by decreasing the surface area of the lipid droplets exposed to the enzymes. This research provides valuable insights into the molecular mechanisms of the interaction of BCT with digestive juice components related to lipid digestion that may affect the rate and extent of lipid digestion.
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Affiliation(s)
- Xiangxin Li
- College of Food Science and Nutritional Engineering, China Agricultural University, 17 Qinghuadonglu Road, Beijing 100083, P. R. China
| | - Yijing Pu
- College of Food Science and Nutritional Engineering, China Agricultural University, 17 Qinghuadonglu Road, Beijing 100083, P. R. China
| | - Yan Xu
- College of Food Science and Nutritional Engineering, China Agricultural University, 17 Qinghuadonglu Road, Beijing 100083, P. R. China
| | - Jiankang Cao
- College of Food Science and Nutritional Engineering, China Agricultural University, 17 Qinghuadonglu Road, Beijing 100083, P. R. China
| | - Weibo Jiang
- College of Food Science and Nutritional Engineering, China Agricultural University, 17 Qinghuadonglu Road, Beijing 100083, P. R. China
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16
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Comparison of quercetin and rutin inhibitory influence on Tartary buckwheat starch digestion in vitro and their differences in binding sites with the digestive enzyme. Food Chem 2021; 367:130762. [PMID: 34390912 DOI: 10.1016/j.foodchem.2021.130762] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 06/21/2021] [Accepted: 08/02/2021] [Indexed: 12/15/2022]
Abstract
Inhibitory effects of flavonoids on starch digestibility were well known, but the structural mechanism was not clear. This study was focused on the diverse effect of quercetin and rutin on digestibility of Tartary buckwheat starch. Results showed that quercetin and rutin reduced the starch digestion by altering starch structure in bound forms and inhibiting digestive enzyme activity in free forms simultaneously, and quercetin showed a stronger effect than rutin. Molecular docking and saturation transfer difference-nuclear magnetic resonance (STD-NMR) revealed different binding site of rutin from quercetin was due to its hydroxyl and hydrogen on the glycoside structure. Rutin interacted with enzymes mainly by CH and OH on the glycoside structure which induced steric hindrance and restricted the inhibitory effect of quercetin fraction. The glycoside structure weakened inhibition of rutin on digestive enzymes in free forms rather than influence its anti-digestive effects in bound forms with starch.
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Yu X, Cai X, Li S, Luo L, Wang J, Wang M, Zeng L. Studies on the interactions of theaflavin-3,3'-digallate with bovine serum albumin: Multi-spectroscopic analysis and molecular docking. Food Chem 2021; 366:130422. [PMID: 34392082 DOI: 10.1016/j.foodchem.2021.130422] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 05/26/2021] [Accepted: 06/17/2021] [Indexed: 01/31/2023]
Abstract
Tea cream, produced by interactions among tea ingredients, is undesirable in tea beverage industry. The interaction between bovine serum albumin (BSA) and theaflavin-3,3'-digallate (TFDG, an important component in tea cream and functional substance of black tea) was investigated by fluorescence spectroscopy, ultraviolet-visible (UV-vis) absorption spectroscopy, synchronous fluorescence spectroscopy, fourier-transform infrared (FT-IR) spectroscopy, and molecular docking technique. Multi-spectroscopic experiments demonstrated that TFDG interacted with BSA via static quenching, and the microenvironment around BSA became more hydrophobicity. FT-IR showed that the α-helix of BSA was increased when binding with TFDG. Thermodynamic parameters and molecular docking demonstrated that hydrophobic interactions and hydrogen bonds dominated the interaction between TFDG and BSA. The mechanism proposed in this research could further develop some nanoparticles to excellent biochemical properties while reducing the formation of tea cream, and explore the potential of BSA as transport carrier for TFDG.
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Affiliation(s)
- Xia Yu
- College of Food Science, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, People's Republic of China
| | - Xinghong Cai
- School of Materials and Energy, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, People's Republic of China
| | - Shuang Li
- Kaijiang County Bureau of Agricultural and Rural Affairs, Kaijiang County, Dazhou 635000, People's Republic of China
| | - Liyong Luo
- College of Food Science, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, People's Republic of China; Tea Research Institute, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, People's Republic of China
| | - Jie Wang
- Tea Research Institute of Chongqing Academy of Agricultural Science, Yongchuan District, Chongqing 402160, People's Republic of China
| | - Min Wang
- School of Materials and Energy, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, People's Republic of China.
| | - Liang Zeng
- College of Food Science, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, People's Republic of China; Tea Research Institute, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, People's Republic of China.
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Zeng X, Du Z, Ding X, Zhao Y, Jiang W. Preparation, characterization and in vitro hypoglycemic activity of banana condensed tannin-inulin conjugate. Food Funct 2020; 11:7973-7986. [PMID: 32839802 DOI: 10.1039/d0fo01652g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
To enhance the hypoglycemic effects of inulin, banana condensed tannins (BCT) were grafted onto inulin via a free radical method to synthesize the novel BCT grafted inulin (BCT-g-inulin) complex. Spectroscopic methods, XRD, TGA, 1H NMR, GPC and morphology analyses were utilized to characterize the structural properties of the BCT-g-inulin complex, and our results confirmed the conjugation of BCT and inulin. The conjugation possibly occurred between the hydroxyl group attached at the C6 position of inulin and the C6/C8 position of flavon-3-ol units of BCT. The grafting ratio and grafting efficiency of the BCT-g-inulin complex were 357.54 ± 2.98 g kg-1 complex and 74.57 ± 1.44%, respectively. The data of the antioxidant assays indicated that the BCT-g-inulin complex showed a significantly higher antioxidant activity than native inulin. Also, the grafting reaction remarkably improved the in vitro anti-diabetic activity of inulin. The glucose adsorption capacity and glucose dialysis retardation index of the BCT-g-inulin complex were remarkably higher than those of inulin, while the BCT-g-inulin complex showed much stronger inhibitory effects against α-amylase and α-glucosidase compared with inulin. Notably, the inhibition of both α-amylase and α-glucosidase by the BCT-g-inulin complex occurred through mixed-competitive mode. On the basis of fluorescence spectroscopy, the fluorescence of α-amylase and α-glucosidase could be quenched by the BCT-g-inulin complex through a static quenching mechanism. Hence, the BCT-g-inulin complex might have the potential to be developed as an effective anti-diabetic agent.
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Affiliation(s)
- Xiangquan Zeng
- College of Food Science and Nutritional Engineering, China Agricultural University, P.O. Box 111, Qinghua Donglu No. 17, Beijing, 100083, PR China
| | - Zhenjiao Du
- College of Food Science and Nutritional Engineering, China Agricultural University, P.O. Box 111, Qinghua Donglu No. 17, Beijing, 100083, PR China
| | - Xiaomeng Ding
- College of Food Science and Nutritional Engineering, China Agricultural University, P.O. Box 111, Qinghua Donglu No. 17, Beijing, 100083, PR China
| | - Yunshu Zhao
- College of Food Science and Nutritional Engineering, China Agricultural University, P.O. Box 111, Qinghua Donglu No. 17, Beijing, 100083, PR China
| | - Weibo Jiang
- College of Food Science and Nutritional Engineering, China Agricultural University, P.O. Box 111, Qinghua Donglu No. 17, Beijing, 100083, PR China
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