1
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Wu X, Zhang B, Li H, Zhao M, Wu W. The synergistic effects of rice bran rancidity and dephenolization on digestive properties of rice bran protein. Food Chem 2024; 460:140617. [PMID: 39067385 DOI: 10.1016/j.foodchem.2024.140617] [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: 04/22/2024] [Revised: 06/06/2024] [Accepted: 07/22/2024] [Indexed: 07/30/2024]
Abstract
Both rice bran (RB) rancidity and dephenolization could affect the structural characteristics and phenolics composition of rice bran protein (RBP), thereby affecting RBP digestibility. The synergistic effects of RB rancidity and dephenolization on RBP digestibility were investigated. Excessive RB rancidity (RB stored for 10 d) and non-dephenolization reduced RBP digestibility, while moderate RB rancidity (RB stored for 1 d) combined with dephenolization improved RBP digestibility to a maximum of 74.19%. Dephenolization reduced the antioxidant capacities of RBP digestive products. The digestibility of non-dephenolized RBP (NDRBP) was significantly (P < 0.05) related with its carbonyl content, surface hydrophobicity, and ζ-potential. The digestibility of dephenolized RBP (DRBP) was significantly related with its β-sheet structure content, surface hydrophobicity, ζ-potential, and average particle size. Overall, moderate RB rancidity combined with dephenolization enhanced RBP digestibility by reducing the non-competitive inhibition of endogenous phenolics on protease and regulating the spatial structural characteristics of RBP.
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Affiliation(s)
- Xiaojuan Wu
- College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Benpeng Zhang
- College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Helin Li
- College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Mengmeng Zhao
- College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Wei Wu
- College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, China.
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2
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Wiglusz K, Żurawska-Płaksej E, Piwowar A, Wiglusz RJ. In vitro studies of hemoglobin's affinity for the Vitamin B 9 and control of its stability character. Int J Biol Macromol 2024; 271:132665. [PMID: 38810847 DOI: 10.1016/j.ijbiomac.2024.132665] [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: 11/04/2023] [Revised: 05/07/2024] [Accepted: 05/23/2024] [Indexed: 05/31/2024]
Abstract
Vitamin B9, known as folic acid, and hemoglobin play an important biological role in the human body. This study was designed to investigate the nature of the complex through multispectroscopic methods at physiological conditions due to the lack of research on the binding interactions between folic acid and hemoglobin. Structural analysis showed that the interactions between the molecules are mainly hydrophobic with binding constant of 0.73 × 104 L/mol at 37 °C. The secondary structure of the protein was stable after the addition of folic acid with a 20-fold excess of ligand per mol protein. The stability effect of folic acid on hemoglobin was examined as a function of release of iron ions and determination of the level of phenanthroline-Fe2+ complex. The protective function of folic acid was observed at a concentration of 6.12 nmol/L, and the release of iron ions was lower than in the control probe.
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Affiliation(s)
- Katarzyna Wiglusz
- Department of Basic Chemical Sciences, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211 A, 50556 Wroclaw, Poland.
| | - Ewa Żurawska-Płaksej
- Department of Toxicology, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211 A, 50566 Wroclaw, Poland.
| | - Agnieszka Piwowar
- Department of Toxicology, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211 A, 50566 Wroclaw, Poland.
| | - Rafal J Wiglusz
- Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Faculty of Chemistry, Silesian University of Technology, Krzywoustego 4, 44100 Gliwice, Poland; Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okolna 2, 50422 Wroclaw, Poland.
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3
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Al-Shabib NA, Khan JM, Malik A, Alamri A, Rehman MT, AlAjmi MF, Husain FM. Probing the interaction mechanisms between sunset yellow dye and trypsin protein leading to amorphous aggregation under low pH conditions. Int J Biol Macromol 2024; 265:130442. [PMID: 38417745 DOI: 10.1016/j.ijbiomac.2024.130442] [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: 12/10/2023] [Revised: 02/20/2024] [Accepted: 02/23/2024] [Indexed: 03/01/2024]
Abstract
Protein aggregation poses a significant concern in the field of food sciences, and various factors, such as synthetic food dyes, can contribute to protein aggregation. One such dye, Sunset Yellow (SY), is commonly employed in the food industry. Trypsin was used as a model protein to assess the impact of SY. We employed several biophysical techniques to examine the binding and aggregation mechanisms between SY and trypsin at different pHs. Results from intrinsic fluorescence measurements indicate a stronger interaction between SY and trypsin at pH 2.0 compared to pH 6.0. Turbidity data reveal trypsin aggregation in the presence of 0.05-3.0 mM SY at pH 2.0, while no aggregation was observed at pH 6.0. Kinetic data demonstrate a rapid, lag-phase-free SY-induced aggregation of trypsin. Circular dichroism analysis reveals that trypsin adopts a secondary structure in the presence of SY at pH 6.0, whereas at pH 2.0, the secondary structure was nearly lost with increasing SY concentrations. Furthermore, turbidity and kinetics data suggest that trypsin aggregation depends on trypsin concentrations and pH. Our study highlights potential health risks associated with the consumption of SY, providing insights into its impact on human health and emphasizing the necessity for further research in this field.
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Affiliation(s)
- Nasser Abdulatif Al-Shabib
- Department of Food Science and Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh 11451, Saudi Arabia
| | - Javed Masood Khan
- Department of Food Science and Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh 11451, Saudi Arabia.
| | - Ajamaluddin Malik
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Abdulaziz Alamri
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Md Tabish Rehman
- King Saud University, Department of Pharmacognosy, College of Pharmacy, Riyadh 11451, Saudi Arabia
| | - Mohamed F AlAjmi
- King Saud University, Department of Pharmacognosy, College of Pharmacy, Riyadh 11451, Saudi Arabia
| | - Fohad Mabood Husain
- Department of Food Science and Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh 11451, Saudi Arabia
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4
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Fabrication of octenyl succinic anhydride starch grafted with folic acid and its loading potential for doxorubicin hydrochloride. Int J Biol Macromol 2023; 236:123907. [PMID: 36870656 DOI: 10.1016/j.ijbiomac.2023.123907] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 01/29/2023] [Accepted: 02/27/2023] [Indexed: 03/06/2023]
Abstract
In this study, octenyl succinic anhydride (OSA) starch with different folic acid (FA) grafting time was prepared and the degree of FA substitution at different grafting time was determined. The results of XPS quantitatively reflected the surface elemental composition of OSA starch grafted with FA. FTIR spectra further confirmed the successful introduction of FA on OSA starch granules. SEM images showed that the surface roughness of OSA starch granules was more obvious with higher FA grafting time. The particle size, zeta potential, and swelling properties were determined to study the effect of FA on the structure of OSA starch. TGA indicated that FA effectively enhanced the thermal stability of OSA starch at high temperature. The crystalline form of the OSA starch gradually transformed from A type to a hybrid A and V-type with the progress of FA grafting reaction. In addition, the anti-digestive properties of OSA starch were enhanced after grafting FA. Using doxorubicin hydrochloride (DOX) as the model drug, the loading efficiency of OSA starch grafted with FA for DOX reached 87.71 %. These results provide novel insights into OSA starch grafted with FA as potential strategy for loading DOX.
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5
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Recent Advances in the Biomedical Applications of Functionalized Nanogels. Pharmaceutics 2022; 14:pharmaceutics14122832. [PMID: 36559325 PMCID: PMC9782855 DOI: 10.3390/pharmaceutics14122832] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/14/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022] Open
Abstract
Nanomaterials have been extensively used in several applications in the past few decades related to biomedicine and healthcare. Among them, nanogels (NGs) have emerged as an important nanoplatform with the properties of both hydrogels and nanoparticles for the controlled/sustained delivery of chemo drugs, nucleic acids, or other bioactive molecules for therapeutic or diagnostic purposes. In the recent past, significant research efforts have been invested in synthesizing NGs through various synthetic methodologies such as free radical polymerization, reversible addition-fragmentation chain-transfer method (RAFT) and atom transfer radical polymerization (ATRP), as well as emulsion techniques. With further polymeric functionalizations using activated esters, thiol-ene/yne processes, imines/oximes formation, cycloadditions, nucleophilic addition reactions of isocyanates, ring-opening, and multicomponent reactions were used to obtain functionalized NGs for targeted delivery of drug and other compounds. NGs are particularly intriguing for use in the areas of diagnosis, analytics, and biomedicine due to their nanodimensionality, material characteristics, physiological stability, tunable multi-functionality, and biocompatibility. Numerous NGs with a wide range of functionalities and various external/internal stimuli-responsive modalities have been possible with novel synthetic reliable methodologies. Such continuous development of innovative, intelligent materials with novel characteristics is crucial for nanomedicine for next-generation biomedical applications. This paper reviews the synthesis and various functionalization strategies of NGs with a focus on the recent advances in different biomedical applications of these surface modified/functionalized single-/dual-/multi-responsive NGs, with various active targeting moieties, in the fields of cancer theranostics, immunotherapy, antimicrobial/antiviral, antigen presentation for the vaccine, sensing, wound healing, thrombolysis, tissue engineering, and regenerative medicine.
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6
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Oral Cell-Targeted Delivery Systems Constructed of Edible Materials: Advantages and Challenges. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27227991. [PMID: 36432092 PMCID: PMC9697699 DOI: 10.3390/molecules27227991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 11/14/2022] [Accepted: 11/15/2022] [Indexed: 11/19/2022]
Abstract
Cell-targeted delivery is an advanced strategy which can effectively solve health problems. However, the presence of synthetic materials in delivery systems may trigger side effects. Therefore, it is necessary to develop cell-targeted delivery systems with excellent biosafety. Edible materials not only exhibit biosafety, but also can be used to construct cell-targeted delivery systems such as ligands, carriers, and nutraceuticals. Moreover, oral administration is the appropriate route for cell-targeted delivery systems constructed of edible materials (CDSEMs), which is the same as the pattern of food intake, resulting in good patient compliance. In this review, relevant studies of oral CDSEMs are collected to summarize the construction method, action mechanism, and health impact. The gastrointestinal stability of delivery systems can be improved by anti-digestible materials. The design of the surface structure, shape, and size of carrier is beneficial to overcoming the mucosal barrier. Additionally, some edible materials show dual functions of a ligand and carrier, which is conductive to simplifying the design of CDSEMs. This review can provide a better understanding and prospect for oral CDSEMs and promote their application in the health field.
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Yue Y, Wang Y, Tu Q, Xu Y, Zhang Y, Tang Q, Liu J. A comprehensive insight into the effects of punicalagin on pepsin: Multispectroscopy and simulations methods. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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8
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Sadat Mostafavi E, Asoodeh A, Chamani J. Evaluation of interaction between Ponceau 4R (P4R) and trypsin using kinetic, spectroscopic, and molecular dynamics simulation methods. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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9
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Wang R, Li M, Liu J, Wang F, Wang J, Zhou Z. Dual modification manipulates rice starch characteristics following debranching and propionate esterification. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106833] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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10
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Xiao Q, Liang J, Luo H, Li H, Yang J, Huang S. Investigations of conformational structures and activities of trypsin and pepsin affected by food colourant allura red. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114359] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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11
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Macromolecular design of folic acid functionalized amylopectin–albumin core–shell nanogels for improved physiological stability and colon cancer cell targeted delivery of curcumin. J Colloid Interface Sci 2020; 580:561-572. [DOI: 10.1016/j.jcis.2020.07.056] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 07/10/2020] [Accepted: 07/11/2020] [Indexed: 12/11/2022]
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12
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Ghasemzadeh S, Riazi GH. Inhibition of Tau amyloid fibril formation by folic acid: In-vitro and theoretical studies. Int J Biol Macromol 2020; 154:1505-1516. [DOI: 10.1016/j.ijbiomac.2019.11.032] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 10/19/2019] [Accepted: 11/05/2019] [Indexed: 10/25/2022]
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13
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Wang Y, Han Q, Zhang G, Zhang H. Evaluation of the binding mechanism of iodine with trypsin and pepsin: A spectroscopic and molecular docking. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 230:118036. [PMID: 31931358 DOI: 10.1016/j.saa.2020.118036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 12/28/2019] [Accepted: 01/03/2020] [Indexed: 06/10/2023]
Abstract
In this work, the effects of I2 on the activities and conformational structures of digestive enzymes, trypsin and pepsin were studied. The results indicated that the enzyme activities were decreased to some extent in the presence of I2, especially trypsin. Upon gradual addition of I2, the intrinsic fluorescence quenching of trypsin and pepsin were observed by mainly static collision and hydrophobic forces. I2 is more likely to cause the fluorescence quenching of trypsin than that of pepsin. Compared with pepsin, trypsin has a greater ability to bind with I2. The synchronous fluorescence spectral results indicated that I2 induced the quaternary structure changes of trypsin/pepsin and changed the hydrophobicity of Tyr and Trp residues. In addition, molecular docking was used to obtain the binding mode and the various amino acid residues of trypsin and pepsin with I2. These investigations may constitute a solid work to further explain the process of migration and transformation of I2 in digestive system.
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Affiliation(s)
- Yanqing Wang
- Institute of Environmental Toxicology and Environmental Ecology, Yancheng Teachers University, Yancheng City, Jiangsu Province 224051, People's Republic of China; School of Chemical and Environmental Engineering, Yancheng Teachers University, Yancheng City, Jiangsu Province 224002, People's Republic of China.
| | - Qianqian Han
- School of Chemical and Environmental Engineering, Yancheng Teachers University, Yancheng City, Jiangsu Province 224002, People's Republic of China; Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing City, Jiangsu Province 210009, People's Republic of China
| | - Gencheng Zhang
- School of Chemical and Environmental Engineering, Yancheng Teachers University, Yancheng City, Jiangsu Province 224002, People's Republic of China
| | - Hongmei Zhang
- Institute of Environmental Toxicology and Environmental Ecology, Yancheng Teachers University, Yancheng City, Jiangsu Province 224051, People's Republic of China; School of Chemical and Environmental Engineering, Yancheng Teachers University, Yancheng City, Jiangsu Province 224002, People's Republic of China.
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14
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Bannigan P, Flynn J, Hudson SP. The impact of endogenous gastrointestinal molecules on the dissolution and precipitation of orally delivered hydrophobic APIs. Expert Opin Drug Deliv 2020; 17:677-688. [DOI: 10.1080/17425247.2020.1743677] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Pauric Bannigan
- Department of Chemical Sciences, SSPC the SFI Pharmaceutical Centre, Bernal Institute, University of Limerick, Limerick, Ireland
| | - James Flynn
- Department of Chemical Sciences, SSPC the SFI Pharmaceutical Centre, Bernal Institute, University of Limerick, Limerick, Ireland
| | - Sarah P. Hudson
- Department of Chemical Sciences, SSPC the SFI Pharmaceutical Centre, Bernal Institute, University of Limerick, Limerick, Ireland
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15
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Yuan J, Zheng Y, Wu Y, Chen H, Tong P, Gao J. Double enzyme hydrolysis for producing antioxidant peptide from egg white: Optimization, evaluation, and potential allergenicity. J Food Biochem 2019; 44:e13113. [PMID: 31823420 DOI: 10.1111/jfbc.13113] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 10/18/2019] [Accepted: 11/19/2019] [Indexed: 01/05/2023]
Abstract
Egg white is a good source of high-quality proteins in food products and an excellent source of antioxidant active peptides through hydrolysis. The hydrolysis conditions for the preparation of potent antioxidant peptides from egg white with chymotrypsin and pepsin were optimized by the response surface methodology. The antioxidant activity and potential allergenicity of the prepared peptides were evaluated by the oxidative damage model and IgE-binding capability, respectively. After ultrafiltration, the peptide produced using the optimized parameters (preheating time of 3.16 hr, hydrolysis time of 3 hr, a sample/solution ratio of 10%, multiple enzymes ratio (E1/E2) of 1.7:1, and E/S of 0.4%) showed antioxidant activity of was 30.86 μmol AAE/g DW and with low potential for allergenicity. The optimized method is efficient and economical and may be applied to the industrial production of antioxidant peptides to obtain nutraceutical and pharmaceutical agents with low sensitivity. However, further in vivo studies must be conducted. PRACTICAL APPLICATIONS: Egg is consumed as an excellent source of protein. Antioxidant peptides released from egg white is considered to be used in food preservation and human health. Few researches on the optimization of egg peptides were aimed to obtain practical techniques used in the food industry. In this paper, egg white hydrolysis peptide with high antioxidant property and low potential allergenicity was prepared after the optimization of double enzyme hydrolysis. The products could be a natural health care products derived from a dietary source and considered using in additive during food production and health food. And the methods used are economical and energy-saving and could be developed to utilize in the food industry.
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Affiliation(s)
- Jin Yuan
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China.,Sino-German Joint Research Institute, Nanchang University, Nanchang, China.,Department of Food Science, Nanchang University, Nanchang, China
| | - Ying Zheng
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China.,Athena Institute of Holistic Wellness, Wuyi University, Nanping, China
| | - Yong Wu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China.,Sino-German Joint Research Institute, Nanchang University, Nanchang, China
| | - Hongbing Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China.,Sino-German Joint Research Institute, Nanchang University, Nanchang, China
| | - Ping Tong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Jinyan Gao
- Department of Food Science, Nanchang University, Nanchang, China
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16
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Wang X, Yue Y, Zhang Y, Wang Z, Liu J, Tang Q. Probing the interaction of pepsin with imidacloprid via DFT calculation, spectroscopic approaches and molecular docking. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.07.061] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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17
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Molecular docking and muiltple spectroscopy investigation on the binding characteristics of aloe-emodin to pepsin. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.05.084] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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18
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Wang Y, Han Q, Zhang H. Evaluation of the toxicity of 5-fluorouracil on three digestive enzymes from the view of side effects. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 220:117105. [PMID: 31141767 DOI: 10.1016/j.saa.2019.05.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Revised: 04/26/2019] [Accepted: 05/09/2019] [Indexed: 06/09/2023]
Abstract
Among the side effects of 5-fluorouracil (5-FU), the performance of the gastrointestinal reactions is faster and more obvious than others. In this work, the effects of 5-FU on the activities and conformational structures of the important digestive enzymes including α-amylase, pepsin and trypsin were studied to analyze the mechanism of the gastrointestinal adverse effects causing by 5-FU binding. The results showed that the enzymatic activity of pepsin was obviously reduced by the presence of 5-FU that bound directly to the enzyme activity cavity site. The molecular modeling and fluorescence quenching data indicated that the hydrophobic, polar and hydrogen bonding forces were involved in the ground state complex formation between proteases and 5-FU. In addition, 5-FU changed the tertiary structures of α-amylase, pepsin, and trypsin.
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Affiliation(s)
- Yanqing Wang
- Institute of Environmental Toxicology and Environmental Ecology, Yancheng Teachers University, Yancheng City, Jiangsu Province 224051, People's Republic of China; School of Chemistry and Environmental Engineering, Yancheng Teachers University, Yancheng City, Jiangsu Province 224002, People's Republic of China.
| | - Qianqian Han
- Institute of Environmental Toxicology and Environmental Ecology, Yancheng Teachers University, Yancheng City, Jiangsu Province 224051, People's Republic of China; Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing City, Jiangsu Province 210009, People's Republic of China
| | - Hongmei Zhang
- Institute of Environmental Toxicology and Environmental Ecology, Yancheng Teachers University, Yancheng City, Jiangsu Province 224051, People's Republic of China; School of Chemistry and Environmental Engineering, Yancheng Teachers University, Yancheng City, Jiangsu Province 224002, People's Republic of China.
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19
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Borah PK, Sarkar A, Duary RK. Water-soluble vitamins for controlling starch digestion: Conformational scrambling and inhibition mechanism of human pancreatic α-amylase by ascorbic acid and folic acid. Food Chem 2019; 288:395-404. [DOI: 10.1016/j.foodchem.2019.03.022] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Revised: 03/07/2019] [Accepted: 03/07/2019] [Indexed: 12/11/2022]
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20
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Mutavdzin S, Gopcevic K, Stankovic S, Jakovljevic Uzelac J, Labudovic Borovic M, Djuric D. The effect of folic acid administration on cardiac tissue matrix metalloproteinase activity and hepatorenal biomarkers in diabetic rats 1. Can J Physiol Pharmacol 2019; 97:893-901. [PMID: 31295411 DOI: 10.1139/cjpp-2019-0027] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Diabetes mellitus (DM) is a metabolic disorder that causes severe complications. Thus, the aims of this study were to investigate the influence of DM and folic acid treatment on liver and renal biomarkers, and heart remodeling through evaluation of cardiac matrix metalloproteinase (MMP) activity. There were 4 groups: control (physiological saline 1 mL/kg, i.p., 28 days), DM (streptozotocin [STZ] 100 mg/kg in physiological saline, i.p., 1 day), folic acid (FA; 5 mg/kg, i.p., 28 days), and DM+FA (STZ 100 mg/kg, i.p., 1 day and folic acid 5 mg/kg, i.p., 28 days). Our results demonstrated increased aminotransferase and alkaline phosphatase activity, urea and creatinine concentration, and decreased albumin and fibrinogen concentration in the DM group. MMP-2 relative activity was elevated in the DM and FA groups; MMP-9 was decreased in the DM and increased in the FA group. The folic acid treatment of diabetic rats did not change aminotransferase activity; it alleviated the increase in alkaline phosphatase and the decrease in albumin and fibrinogen concentration, and reduced MMP-2 activity; however, it increased urea and creatinine concentration. In conclusion, folic acid treatment of diabetic rats has cardio- and hepato-protective effects. However, its dosing should be carefully considered because of possible renal damage.
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Affiliation(s)
- Slavica Mutavdzin
- Institute of Medical Physiology "Richard Burian", Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Kristina Gopcevic
- Institute of Chemistry in Medicine "Prof. Dr. Petar Matavulj", Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Sanja Stankovic
- Centre of Medical Biochemistry, Clinical Centre of Serbia, Belgrade, Serbia
| | - Jovana Jakovljevic Uzelac
- Institute of Medical Physiology "Richard Burian", Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Milica Labudovic Borovic
- Institute of Histology and Embryology "Aleksandar Dj. Kostic", Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Dragan Djuric
- Institute of Medical Physiology "Richard Burian", Faculty of Medicine, University of Belgrade, Belgrade, Serbia
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21
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Borah PK, Rappolt M, Duary RK, Sarkar A. Structurally induced modulation of in vitro digestibility of amylopectin corn starch upon esterification with folic acid. Int J Biol Macromol 2019; 129:361-369. [DOI: 10.1016/j.ijbiomac.2019.02.051] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Revised: 02/07/2019] [Accepted: 02/08/2019] [Indexed: 12/13/2022]
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22
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Gu Y, Wang Y, Zhang H. Study on the interactions between toxic nitroanilines and lysozyme by spectroscopic approaches and molecular modeling. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 202:260-268. [PMID: 29793147 DOI: 10.1016/j.saa.2018.05.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 04/06/2018] [Accepted: 05/02/2018] [Indexed: 06/08/2023]
Abstract
Being exogenous environmental pollutants, nitroanilines (NAs) are highly toxic and have mutagenic and carcinogenic activity. Being lack of studies on interactions between NAs and lysozyme at molecular level, the binding interactions of lysozyme with o-nitroaniline (oNA), m-nitroaniline (mNA) and p-nitroaniline (pNA) were investigated by means of steady-state fluorescence, synchronous fluorescence, UV-vis absorption spectroscopy, as well as molecular modeling. The experimental results revealed that the fluorescence of lysozyme is quenched by oNA and mNA through a static quenching, while the fluorescence quenching triggered by pNA is a combined dynamic and static quenching. The number of binding sites (n) and the binding constant (Kb) corresponding thermodynamic parameters ΔH⊖, ΔS⊖, ΔG⊖ at different temperatures were calculated. The reactions between NAs and lysozyme were spontaneous and entropy driven and the binding of NAs to lysozyme induced conformation changes of lysozyme. The difference of the position of -NO2 group affected the binding and the binding constants Kb decreased in the following pattern: Kb (pNA) >Kb (mNA) >Kb (oNA). Molecular docking studies were performed to reveal the most favorable binding sites of NAs on lysozyme. Our recently results could offer mechanistic insights into the nature of the binding interactions between NAs and lysozyme and provide information about the toxicity risk of NAs to human health.
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Affiliation(s)
- Yunlan Gu
- College of Chemical and Environmental Engineering, Yancheng Teachers University, Yancheng City, Jiangsu Province 224002, People's Republic of China.
| | - Yanqing Wang
- College of Chemical and Environmental Engineering, Yancheng Teachers University, Yancheng City, Jiangsu Province 224002, People's Republic of China
| | - Hongmei Zhang
- College of Chemical and Environmental Engineering, Yancheng Teachers University, Yancheng City, Jiangsu Province 224002, People's Republic of China
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Feng Y, Lv M, Lu Y, Liu K, Liu L, He Z, Wu K, Wang X, Zhang B, Wu X. Characterization of binding interactions between selected phenylpropanoid glycosides and trypsin. Food Chem 2018; 243:118-124. [DOI: 10.1016/j.foodchem.2017.09.118] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 08/25/2017] [Accepted: 09/24/2017] [Indexed: 12/18/2022]
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24
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Ochnio ME, Martínez JH, Allievi MC, Palavecino M, Martínez KD, Pérez OE. Proteins as Nano-Carriers for Bioactive Compounds. The Case of 7S and 11S Soy Globulins and Folic Acid Complexation. Polymers (Basel) 2018; 10:polym10020149. [PMID: 30966185 PMCID: PMC6415263 DOI: 10.3390/polym10020149] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 01/29/2018] [Accepted: 02/01/2018] [Indexed: 12/29/2022] Open
Abstract
Isolated 7S and 11S globulins obtained from defeated soy flour were complexated with folic acid (FA) in order to generate nano-carriers for this important vitamin in human nutrition. Fluorescence spectroscopy and dynamic light scattering were applied to follow the nano-complexes formation and for their characterization. Fluorescence experimental data were modeled by the Stern-Volmer and a modified double logarithm approach. The results obtained confirmed static quenching. The number of binding sites on the protein molecule was ~1. The values obtained for the binding constants suggest a high affinity between proteins and FA. Particle size distribution allowed to study the protein aggregation phenomenon induced by FA bound to the native proteins. Z-average manifested a clear trend to protein aggregation. 11S-FA nano-complexes resulted in more polydispersity. ζ-potential of FA nano-complexes did not show a remarkable change after FA complexation. The biological activity of nano-complexes loaded with FA was explored in terms of their capacity to enhance the biomass formation of Lactobacillus casei BL23. The results concerning to nano-complexes inclusion in culture media showed higher bacterial growth. Such a result was attributed to the entry of the acid by the specific receptors concomitantly by the peptide receptors. These findings have technological impact for the use of globulins-FA based nano-complexes in nutraceutical, pharmaceutical and food industries.
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Affiliation(s)
- María Emilia Ochnio
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Intendente Güiraldes, s/n, Ciudad Universitaria, Buenos Aires CP 1428, Argentina.
| | - Jimena H Martínez
- Consejo Nacional de Investigación Científica y Técnicas de la República Argentina IQUIBICEN-CONICET, Universidad de Buenos Aires, Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Intendente Güiraldes, s/n, Ciudad Universitaria, Buenos Aires CP 1428, Argentina.
| | - Mariana C Allievi
- Consejo Nacional de Investigación Científica y Técnicas de la República Argentina IQUIBICEN-CONICET, Universidad de Buenos Aires, Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Intendente Güiraldes, s/n, Ciudad Universitaria, Buenos Aires CP 1428, Argentina.
| | - Marcos Palavecino
- Consejo Nacional de Investigación Científica y Técnicas de la República Argentina IQUIBICEN-CONICET, Universidad de Buenos Aires, Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Intendente Güiraldes, s/n, Ciudad Universitaria, Buenos Aires CP 1428, Argentina.
| | - Karina D Martínez
- Consejo Nacional de Investigación Científica y Técnicas de la República Argentina, CONICET, Universidad de Buenos Aires, Departamento de Industrias, Facultad de Ciencias Exactas y Naturales, Intendente Güiraldes, s/n, Ciudad Universitaria, Buenos Aires CP 1428, Argentina.
| | - Oscar E Pérez
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Intendente Güiraldes, s/n, Ciudad Universitaria, Buenos Aires CP 1428, Argentina.
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