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Zhang Y, Li Z, Wei S, Xu C, Chen M, Sang J, Han Y, Yan H, Li Z, Cui Z, Ye X. Antifungal Activity and Mechanisms of 2-Ethylhexanol, a Volatile Organic Compound Produced by Stenotrophomonas sp. NAU1697, against Fusarium oxysporum f. sp. cucumerinum. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:15213-15227. [PMID: 38916250 DOI: 10.1021/acs.jafc.3c09851] [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: 06/26/2024]
Abstract
Researchers often consider microorganisms from Stenotrophomonas sp. to be beneficial for plants. In this study, the biocidal effects and action mechanisms of volatile organic compounds (VOCs) produced by Stenotrophomonas sp. NAU1697 were investigated. The mycelial growth and spore germination of Fusarium oxysporum f. sp. cucumerinum (FOC), which is a pathogen responsible for cucumber wilt disease, were significantly inhibited by VOCs emitted from NAU1697. Among the VOCs, 33 were identified, 11 of which were investigated for their antifungal properties. Among the tested compounds, 2-ethylhexanol exhibited the highest antifungal activity toward FOC, with a minimum inhibitory volume (MIV) of 3.0 μL/plate (equal to 35.7 mg/L). Damage to the hyphal cell wall and cell membrane integrity caused a decrease in the ergosterol content and a burst of reactive oxygen species (ROS) after 2-ethylhexanol treatment. DNA damage, which is indicative of apoptosis-like cell death, was monitored in 2-ethylhexanol-treated FOC cells by using micro-FTIR analysis. Furthermore, the activities of mitochondrial dehydrogenases and mitochondrial respiratory chain complex III in 2-ethylhexanol-treated FOC cells were significantly decreased. The transcription levels of genes associated with redox reactions and the cell wall integrity (CWI) pathway were significantly upregulated, thus indicating that stress was caused by 2-ethylhexanol. The findings of this research provide a new avenue for the sustainable management of soil-borne plant fungal diseases.
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Affiliation(s)
- Yu Zhang
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing 210095, China
| | - Zeyuan Li
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing 210095, China
| | - Shuxin Wei
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing 210095, China
| | - Changsheng Xu
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing 210095, China
| | - Minhua Chen
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing 210095, China
| | - Jierong Sang
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing 210095, China
| | - Yiru Han
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing 210095, China
| | - Huang Yan
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhoukun Li
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhongli Cui
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing 210095, China
| | - Xianfeng Ye
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing 210095, China
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Cabutaje EM, Ueno K, Dela Cruz TEE, Ishihara A. Suppression of anthracnose disease by orsellinaldehyde isolated from the mushroom Coprinus comatus. J Appl Microbiol 2024; 135:lxae128. [PMID: 38802124 DOI: 10.1093/jambio/lxae128] [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: 04/12/2024] [Revised: 05/17/2024] [Accepted: 05/26/2024] [Indexed: 05/29/2024]
Abstract
AIMS Anthracnose caused by Colletotrichum species is one of the most devastating diseases of fruits and crops. We isolated and identified an antifungal compound from the mushroom Coprinus comatus and investigated its inhibitory potential against anthracnose disease-causing fungi with the goal of discovering natural products that can suppress anthracnose-caused plant disease. METHODS AND RESULTS The culture filtrate of C. comatus was subjected to a bioassay-guided isolation of antifungal compounds. The active compound was identified as orsellinaldehyde (2,4-dihydroxy-6-methylbenzaldehyde) based on mass spectroscopy and nuclear magnetic resonance analyses. Orsellinaldehyde displayed broad-spectrum inhibitory activity against different plant pathogenic fungi. Among the tested Colletotrichum species, it exhibited the lowest IC50 values on conidial germination and germ tube elongation of Colletotrichum orbiculare. The compound also showed remarkable inhibitory activity against Colletotrichum gloeosporiodes. The staining of Colletotrichum conidia with fluorescein diacetate and propidium iodide demonstrated that the compound is fungicidal. The postharvest in-vivo detached fruit assay indicated that orsellinaldehyde suppressed anthracnose lesion symptoms on mango and cucumber fruits caused by C. gloeosporioides and C. orbiculare, respectively. CONCLUSIONS Orsellinaldehyde was identified as a potent antifungal compound from the culture filtrate of C. comatus. The inhibitory and fungicidal activities of orsellinaldehyde against different Colletotrichum species indicate its potential as a fungicide for protecting various fruits against anthracnose disease-causing fungi.
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Affiliation(s)
- Enrico M Cabutaje
- The United Graduate School of Agricultural Sciences, Tottori University, Tottori 680-8553, Japan
| | - Kotomi Ueno
- Faculty of Agriculture, Tottori University, 4-101, Koyama-cho Minami, Tottori 680-8553, Japan
| | - Thomas Edison E Dela Cruz
- Department of Biological Sciences, College of Science, University of Santo Tomas, España Blvd. 1015, Manila, Philippines
| | - Atsushi Ishihara
- Faculty of Agriculture, Tottori University, 4-101, Koyama-cho Minami, Tottori 680-8553, Japan
- International Platform for Dryland Research and Education, Tottori University, 1390 Hamasaka, Tottori 680-0001, Japan
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Zhuikova YV, Zhuikov VA, Khaydapova DD, Lunkov AP, Bonartseva GA, Varlamov VP. Evaluation of Chemical and Biological Properties of Biodegradable Composites Based on Poly(3-hydroxybutyrate) and Chitosan. Polymers (Basel) 2024; 16:1124. [PMID: 38675043 PMCID: PMC11053872 DOI: 10.3390/polym16081124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 04/11/2024] [Accepted: 04/14/2024] [Indexed: 04/28/2024] Open
Abstract
In this study, composite films and scaffolds of polyester poly(3-hydroxybutyrate) and polysaccharide chitosan obtained via a simple and reproducible blending method using acetic acid as a solvent were considered. The degradation process of the films was studied gravimetrically in a model biological medium in the presence of enzymes in vitro for 180 days. The kinetics of weight reduction depended on the amount of chitosan in the composition. The biocompatibility of the films was evaluated using the Alamar blue test and fluorescence microscopy. The materials were non-cytotoxic, and the addition of poly(3-hydroxybutyrate) to chitosan improved its matrix properties on mesenchymal stem cells. Then, the 3D composites were prepared by freeze-drying. Their structure (using SEM), rheological behavior, moisture absorption, and porosity were investigated. The addition of different amounts of chitosan allowed us to vary the chemical and biological properties of poly(3-hydroxybutyrate) materials and their degradation rate, which is extremely important in the development of biomedical poly(3-hydroxybutyrate) materials, especially implantable ones.
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Affiliation(s)
- Yulia V. Zhuikova
- Research Center of Biotechnology of the Russian Academy of Sciences, 33, Bld. 2 Leninsky Ave, Moscow 119071, Russia; (Y.V.Z.); (A.P.L.); (G.A.B.); (V.P.V.)
| | - Vsevolod A. Zhuikov
- Research Center of Biotechnology of the Russian Academy of Sciences, 33, Bld. 2 Leninsky Ave, Moscow 119071, Russia; (Y.V.Z.); (A.P.L.); (G.A.B.); (V.P.V.)
| | - Dolgor D. Khaydapova
- Faculty of Soil Science, M.V. Lomonosov Moscow State University, Moscow 119234, Russia;
| | - Alexey P. Lunkov
- Research Center of Biotechnology of the Russian Academy of Sciences, 33, Bld. 2 Leninsky Ave, Moscow 119071, Russia; (Y.V.Z.); (A.P.L.); (G.A.B.); (V.P.V.)
| | - Garina A. Bonartseva
- Research Center of Biotechnology of the Russian Academy of Sciences, 33, Bld. 2 Leninsky Ave, Moscow 119071, Russia; (Y.V.Z.); (A.P.L.); (G.A.B.); (V.P.V.)
| | - Valery P. Varlamov
- Research Center of Biotechnology of the Russian Academy of Sciences, 33, Bld. 2 Leninsky Ave, Moscow 119071, Russia; (Y.V.Z.); (A.P.L.); (G.A.B.); (V.P.V.)
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Liang J, He S, Sun J, Bao H, Cui L. Secretory production and characterization of a highly effective chitosanase from Streptomyces coelicolor A3(2) M145 in Pichia pastoris. Biotechnol J 2024; 19:e2300402. [PMID: 38403403 DOI: 10.1002/biot.202300402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 12/19/2023] [Accepted: 01/19/2024] [Indexed: 02/27/2024]
Abstract
In this study, a glycoside hydrolase family 46 chitosanase from Streptomyces coelicolor A3(2) M145 was firstly cloned and expressed in Pichia pastoris GS115 (P. pastoris GS115). The recombinant enzyme (CsnA) showed maximal activity at pH 6.0 and 65°C. Both thermal stability and pH stability of CsnA expressed in P. pastoris GS115 were significantly increased compared with homologous expression in Streptomyces coelicolor A3(2). A stable chitosanase activity of 725.7 ± 9.58 U mL-1 was obtained in fed-batch fermentation. It's the highest level of CsnA from Streptomyces coelicolor expressed in P. pastoris so far. The hydrolytic process of CsnA showed a time-dependent manner. Chitosan oligosaccharides (COSs) generated by CsnA showed antifungal activity against Fusarium oxysporum sp. cucumerinum (F. oxysporum sp. cucumerinum). The secreted expression and hydrolytic performance make the enzyme a desirable biocatalyst for industrial controllable production of chitooligosaccharides with specific degree of polymerization, which have potential to control fungi that cause important crop diseases.
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Affiliation(s)
- Jiayu Liang
- Key Laboratory of Longevity and Aging-Related Diseases of Chinese Ministry of Education, Key Laboratory of Biological Molecular Medicine Research, School of Basic Medical Sciences, Guangxi Colleges and Universities, Guangxi Medical University, Nanning, Guangxi, People's Republic of China
| | - Shengbin He
- Key Laboratory of Longevity and Aging-Related Diseases of Chinese Ministry of Education, Key Laboratory of Biological Molecular Medicine Research, School of Basic Medical Sciences, Guangxi Colleges and Universities, Guangxi Medical University, Nanning, Guangxi, People's Republic of China
| | - Jian Sun
- Key Laboratory of Longevity and Aging-Related Diseases of Chinese Ministry of Education, Key Laboratory of Biological Molecular Medicine Research, School of Basic Medical Sciences, Guangxi Colleges and Universities, Guangxi Medical University, Nanning, Guangxi, People's Republic of China
| | - Haodong Bao
- Key Laboratory of Longevity and Aging-Related Diseases of Chinese Ministry of Education, Key Laboratory of Biological Molecular Medicine Research, School of Basic Medical Sciences, Guangxi Colleges and Universities, Guangxi Medical University, Nanning, Guangxi, People's Republic of China
| | - Lanyu Cui
- Key Laboratory of Longevity and Aging-Related Diseases of Chinese Ministry of Education, Key Laboratory of Biological Molecular Medicine Research, School of Basic Medical Sciences, Guangxi Colleges and Universities, Guangxi Medical University, Nanning, Guangxi, People's Republic of China
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Uskoković V, Abuna G, Hampton JR, Geraldeli S. Tunable Release of Calcium from Chitosan-Coated Bioglass. Pharmaceutics 2023; 16:39. [PMID: 38258050 PMCID: PMC10818729 DOI: 10.3390/pharmaceutics16010039] [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: 12/06/2023] [Revised: 12/20/2023] [Accepted: 12/26/2023] [Indexed: 01/24/2024] Open
Abstract
Bioglass presents a standard biomaterial for regeneration of hard tissues in orthopedics and dentistry. The notable osteo-inductive properties of bioglass are largely due to the release of calcium ions from it. However, this release is not easily controllable and can often be excessive, especially during the initial interaction of the biomaterial with the surrounding tissues. Consequently, this excessive release can deplete the calcium content of the bioglass, ultimately reducing its overall bioactivity. In this study, we have tested if applying biopolymer chitosan coatings of different thicknesses would be able to mitigate and regulate the calcium ion release from monodisperse bioglass nanoparticles. Calcium release was assessed for four different chitosan coating thicknesses at different time points over the period of 28 days using a fluorescence quencher. Expectedly, chitosan-coated particles released less calcium as the concentration of chitosan in the coating solution increased, presumably due to the increased thickness of the chitosan coating around the bioglass particles. The mechanism of release remained constant for each coating thickness, corresponding to anomalous, non-Fickian diffusion, but the degree of anomalousness increased with the deposition of chitosan. Zeta potential testing showed an expected increase in the positive double layer charge following the deposition of the chitosan coating due to the surface exposure of the amine groups of chitosan. Less intuitively, the zeta potential became less positive as thickness of the chitosan coating increased, attesting to the lower density of the surface charges within thicker coatings than within the thinner ones. Overall, the findings of this study demonstrate that chitosan coating efficiently prevents the early release of calcium from bioglass. This coating procedure also allows for the tuning of the calcium release kinetics by controlling the chitosan concentration in the parent solution.
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Affiliation(s)
- Vuk Uskoković
- TardigradeNano LLC, 7 Park Vista, Irvine, CA 92604, USA
- Department of Mechanical Engineering, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182, USA
| | - Gabriel Abuna
- School of Dental Medicine, East Carolina University, 1851 MacGregor Downs Rd, Greenville, NC 27834, USA; (G.A.); (J.R.H.)
| | - Joseph Ryan Hampton
- School of Dental Medicine, East Carolina University, 1851 MacGregor Downs Rd, Greenville, NC 27834, USA; (G.A.); (J.R.H.)
| | - Saulo Geraldeli
- School of Dental Medicine, East Carolina University, 1851 MacGregor Downs Rd, Greenville, NC 27834, USA; (G.A.); (J.R.H.)
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Zhao D, Zhang Y, Jin Z, Bai R, Wang J, Wu L, He Y. Benzalkonium Chloride and Benzethonium Chloride Effectively Reduce Spore Germination of Ginger Soft Rot Pathogens: Fusarium solani and Fusarium oxysporum. J Fungi (Basel) 2023; 10:8. [PMID: 38248918 PMCID: PMC10816859 DOI: 10.3390/jof10010008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 12/18/2023] [Accepted: 12/19/2023] [Indexed: 01/23/2024] Open
Abstract
Ginger soft rot is a serious soil-borne disease caused by Fusarium solani and Fusarium oxysporum, resulting in reduced crop yields. The application of common chemical fungicides is considered to be an effective method of sterilization, and therefore, they pose a serious threat to the environment and human health due to their high toxicity. Benzalkonium chloride (BAC) and benzethonium chloride (BEC) are two popular quaternary ammonium salts with a wide range of fungicidal effects. In this study, we investigated the fungicidal effects of BAC and BEC on soft rot disease of ginger as alternatives to common chemical fungicides. Two soft rot pathogens of ginger were successfully isolated from diseased ginger by using the spread plate method and sequenced as F. solani and F. oxysporum using the high-throughput fungal sequencing method. We investigated the fungicidal effects of BAC and BEC on F. solani and F. oxysporum, and we explored the antifungal mechanisms. Almost complete inactivation of spores of F. solani and F. oxysporum was observed at 100 mg/L fungicide concentration. Only a small amount of spore regrowth was observed after the inactivation treatment of spores of F. solani and F. oxysporum in soil, which proved that BAC and BEC have the potential to be used as an alternative to common chemical fungicides for soil disinfection of diseased ginger.
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Affiliation(s)
- Dongxu Zhao
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yang Zhang
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhaoyang Jin
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ruxiao Bai
- Institute of Farmland Water Conservancy and Soil Fertilizers, Xinjiang Academy of Agricultural Reclamation Sciences, Shihezi 832000, China
| | - Jun Wang
- Institute of Farmland Water Conservancy and Soil Fertilizers, Xinjiang Academy of Agricultural Reclamation Sciences, Shihezi 832000, China
| | - Li Wu
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Yujian He
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
- Institute of Farmland Water Conservancy and Soil Fertilizers, Xinjiang Academy of Agricultural Reclamation Sciences, Shihezi 832000, China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, China
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Yi Y, Jin X, Chen M, Coldea TE, Yang H, Zhao H. Brij-58 supplementation enhances menaquinone-7 biosynthesis and secretion in Bacillus natto. Appl Microbiol Biotechnol 2023:10.1007/s00253-023-12640-y. [PMID: 37358810 DOI: 10.1007/s00253-023-12640-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 06/08/2023] [Accepted: 06/15/2023] [Indexed: 06/27/2023]
Abstract
Menaquinone-7 is a form of vitamin K2 that has been shown to have numerous healthy benefits. In this study, several surfactants were investigated to enhance the production of menaquinone-7 in Bacillus natto. Results showed that Brij-58 supplementation influenced the cell membrane via adsorption, and changed the interfacial tension of fermentation broth, while the changes in the state and the composition of the cell membrane enhanced the secretion and biosynthesis of menaquinone-7. The total production and secretion rate of menaquinone-7 increased by 48.0% and 56.2% respectively. During fermentation, the integrity of the cell membrane decreased by 82.9% while the permeability increased by 158% when the maximum secretory rate was reached. Furthermore, Brij-58 supplementation induced the stress response in bacteria, resulting in hyperpolarization of the membrane, and increased membrane ATPase activity. Finally, changes in fatty acid composition increased membrane fluidity by 30.1%. This study provided an effective strategy to enhance menaquinone-7 yield in Bacillus natto and revealed the mechanism of Brij-58 supplementation in menaquinone-7 production. KEY POINTS: • MK-7 yield in Bacillus natto was significantly increased by Brij-58 supplementation. • Brij-58 could be adsorbed on cell surface and change fermentation environment. • Brij-58 supplementation could affect the state and composition of the cell membrane.
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Affiliation(s)
- Yunxin Yi
- School of Food Science and Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Xiaofan Jin
- School of Food Science and Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Moutong Chen
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
| | - Teodora Emilia Coldea
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, 400372, Cluj-Napoca-Napoca, Romania
| | - Huirong Yang
- College of Food Science and Technology, Southwest Minzu University, Chengdu, 610041, China.
| | - Haifeng Zhao
- School of Food Science and Engineering, South China University of Technology, Guangzhou, 510640, China.
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Ma Y, Liu C, Yan J, Xu X, Xin Y, Yang M, Chen A, Dang Q. A bacteriostatic hemostatic dressing prepared from l-glutamine-modified chitosan, tannic acid-modified gelatin and oxidized dextran. Int J Biol Macromol 2023; 242:124669. [PMID: 37150375 DOI: 10.1016/j.ijbiomac.2023.124669] [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: 03/01/2023] [Revised: 04/11/2023] [Accepted: 04/25/2023] [Indexed: 05/09/2023]
Abstract
In this study, porous hemostatic sponges (CGS1, CGS2 and CGS3) with proper absorption (38-43×) and air permeability (2214 g/m2·day) were prepared from l-glutamine-modified chitosan (CG), tannic acid-modified gelatin (GTA), and oxidized dextran (ODEX) by Schiff base crosslinking reaction. Among them, CGS2 was proved to have high porosity (88.98 %), durable water retention (>6 h), strong antibacterial activity, proper mechanical quality, and suitable tissue adhesion. In addition, CGS2 had good biocompatibility, mainly manifested in low hemolysis rate (<0.4 %), low cytotoxicity (relative cell activity>90 %), and good biodegradability in vitro. The hemostatic time and blood loss in CGS2 group were much lower than those in commercial gelatin sponge group in three animal injury models. Moreover, the activated partial thromboplastin time (APTT) and the prothrombin time (PT) results indicated that CGS2 promoted coagulation by activating the endogenous coagulation pathway. These results suggested that CGS2 had great potential for rapid hemostasis and avoidance of wound infection.
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Affiliation(s)
- Yue Ma
- College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China
| | - Chengsheng Liu
- College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China
| | - Jingquan Yan
- National Engineering Technology Research Center for Marine Drugs, Marine Biomedical Research Institute of Qingdao, Ocean University of China, Qingdao 266003, PR China
| | - Ximing Xu
- National Engineering Technology Research Center for Marine Drugs, Marine Biomedical Research Institute of Qingdao, Ocean University of China, Qingdao 266003, PR China
| | - Ying Xin
- Department of Endocrine and Metabolic Diseases, The Affiliated Hospital of Qingdao University, Qingdao 266003, PR China
| | - Meng Yang
- College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China
| | - Aoqing Chen
- College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China
| | - Qifeng Dang
- College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China.
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Zhang C, Zhao C, Zheng H, Li L, Zheng Y, Wu Z. Design, Synthesis, and Study of the Dual Action Mode of Novel N-Thienyl-1,5-disubstituted-4-pyrazole Carboxamides against Nigrospora oryzae. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:7210-7220. [PMID: 37141153 DOI: 10.1021/acs.jafc.3c00269] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Due to the single target but extensive application of commercialized succinate dehydrogenase inhibitors (SDHIs), resistance problems have gradually become apparent in recent years. To solve this problem, a series of novel N-thienyl-1,5-disubstituted-1H-4-pyrazole carboxamide derivatives were designed and synthesized in this work based on the active skeleton 5-trifluoromethyl-4-pyrazole carboxamide. The bioassay results indicated that some target compounds exhibited excellent in vitro antifungal activities against the eight phytopathogenic fungi tested. Among them, the EC50 values of T4, T6, and T9 against Nigrospora oryzae were 5.8, 1.9, and 5.5 mg/L, respectively. The in vivo protective and curative activities of 40 mg/L T6 against rice infected with N. oryzae were 81.5% and 43.0%, respectively. Further studies revealed that T6 not only significantly inhibited the growth of N. oryzae mycelia but also effectively hindered spore germination and germ tube elongation. Morphological studies using scanning electron microscopy (SEM), fluorescence microscopy (FM), and transmission electron microscopy (TEM) found that T6 could affect the mycelium membrane integrity by increasing cell membrane permeability and causing peroxidation of cellular lipids, and these results were further verified by measuring the malondialdehyde (MDA) content. The IC50 value of T6 against succinate dehydrogenase (SDH) was 7.2 mg/L, lower than that of the commercialized SDHI penthiopyrad (3.4 mg/L). Further, ATP content detection and the results after docking T6 and penthiopyrad suggested that T6 was a potential SDHI. These studies demonstrated that active compound T6 could both inhibit the activity of SDH and affect the integrity of the cell membrane at the same time via a dual action mode, which is different from the mode of action of penthiopyrad. Thus, this study provides a new idea for a strategy to delay resistance and diversify the structures of SDHIs.
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Affiliation(s)
- Chengzhi Zhang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, 550025, China
| | - Cailong Zhao
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, 550025, China
| | - Huanlin Zheng
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, 550025, China
| | - Longju Li
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, 550025, China
| | - Ya Zheng
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, 550025, China
| | - Zhibing Wu
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, 550025, China
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Chandra D, Molla MTH, Bashar MA, Islam MS, Ahsan MS. Chitosan-based nano-sorbents: synthesis, surface modification, characterisation and application in Cd (II), Co (II), Cu (II) and Pb (II) ions removal from wastewater. Sci Rep 2023; 13:6050. [PMID: 37055426 PMCID: PMC10101992 DOI: 10.1038/s41598-023-32847-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 04/03/2023] [Indexed: 04/15/2023] Open
Abstract
In contemplation of treating hazardous industrial wastewater, sodium tripolyphosphate (TPP) and vanillin (V)-modified chitosan-based magnetic nano-sorbents (TPP-CMN and V-CMN) were prepared, and the physical and surface properties of both nano-sorbents were characterised. The results of FE-SEM and XRD showed an average size of between 6.50 and 17.61 nm for Fe3O4 magnetic nanoparticles. The Physical Property Measurement System (PPMS) was carried out, and the saturation magnetisations for chitosan, Fe3O4 nanoparticles, TPP-CMN, and V-CMN were 0.153, 67.844, 7.211, and 7.772 emu.g-1, respectively. By using multi-point analysis, the BET surface areas of the synthesised TPP-CMN and V-CMN nano-sorbents were found to be 8.75 and 6.96 m2/g, respectively. The synthesised TPP-CMN and V-CMN were investigated as effective nano-sorbents to uptake Cd (II), Co (II), Cu (II), and Pb (II) ions, and the results were investigated by AAS. The adsorption process of heavy metals was investigated by the batch equilibrium technique, and the sorption capacity values of Cd (II), Co (II), Cu (II), and Pb (II) ions by TPP-CMN were 91.75, 93.00, 87.25, and 99.96 mg/g. By V-CMN, the values were 92.5, 94.00, 88.75, and 99.89 mg/g, respectively. The equilibrium times for adsorption were found to be 15 minutes for TPP-CMN and 30 minutes for V-CMN nano-sorbents. The adsorption isotherms, kinetics, and thermodynamics were studied to understand the adsorption mechanism. Furthermore, the adsorption of two synthetic dyes and two real wastewater samples was studied and obtained significant results. These nano-sorbents' simple synthesis, high sorption capability, excellent stability, and recyclability may provide highly efficient and cost-effective nano-sorbents for wastewater treatment.
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Affiliation(s)
- Dipesh Chandra
- Department of Applied Chemistry and Chemical Engineering, University of Rajshahi, Rajshahi, 6205, Bangladesh
| | - Md Tamzid Hossain Molla
- Department of Applied Chemistry and Chemical Engineering, University of Rajshahi, Rajshahi, 6205, Bangladesh
| | - Md Abul Bashar
- Department of Applied Chemistry and Chemical Engineering, University of Rajshahi, Rajshahi, 6205, Bangladesh
| | - Md Suman Islam
- Department of Applied Chemistry and Chemical Engineering, University of Rajshahi, Rajshahi, 6205, Bangladesh
| | - Md Shameem Ahsan
- Department of Applied Chemistry and Chemical Engineering, University of Rajshahi, Rajshahi, 6205, Bangladesh.
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11
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Liu M, Meng Q, Wang S, Yang K, Tian J. Research progress on postharvest sweet potato spoilage fungi Ceratocystis fimbriata and control measures. FOOD BIOSCI 2023. [DOI: 10.1016/j.fbio.2023.102627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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12
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Rola K, Majewska E, Chowaniec K. Interaction effect of fungicide and chitosan on non-target lichenized fungi. CHEMOSPHERE 2023; 316:137772. [PMID: 36623603 DOI: 10.1016/j.chemosphere.2023.137772] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 12/14/2022] [Accepted: 01/04/2023] [Indexed: 06/17/2023]
Abstract
Excessive use of plant growth stimulants and pesticides is currently a considerable problem, especially in agriculture, horticulture, and arboriculture. Understanding the impacts of these compounds and their combinations on non-target organisms is crucial to minimize unintended consequences, while maintaining their use in plant protection. The aim of this study was to test how long-term spraying with different solutions of natural biostimulator chitosan, synthetic fungicide Switch 62.5 WG, and their combinations affects the physiology of epiphytic lichen Xanthoria parietina naturally occurring in fruit orchards and farmlands. We showed that fungicides composed of fludioxionil and cypronidil, as well as the combined use of such fungicides together with chitosan, can cause the considerable impairment of lichen physiology, and these disturbances relate to both algal and fungal partners of the symbiotic association. This negative effect was especially visible in the loss of cell membrane integrity, the high level of membrane lipid peroxidation, and changes in chlorophyll fluorescence parameters on the last day of the experiment. The combined use of these agents also leads to clear disturbances in the functioning of the mitochondrial respiratory chain, which was manifested by increased NADH dehydrogenase activity, while the use of these compounds separately led to a decrease in the activity of this enzyme. We concluded that the regular use of these agents in fruit tree cultivation may cause serious ecological consequences for epiphytic lichen communities as a result of the death of lichen thalli. This study suggests that the impact of some plant protection agents, both individually and in combinations, merits further attention in terms of their impact on non-target fungi.
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Affiliation(s)
- Kaja Rola
- Institute of Botany, Faculty of Biology, Jagiellonian University, Gronostajowa 3, 30-387 Kraków, Poland
| | - Emilia Majewska
- Institute of Botany, Faculty of Biology, Jagiellonian University, Gronostajowa 3, 30-387 Kraków, Poland
| | - Karolina Chowaniec
- Institute of Botany, Faculty of Biology, Jagiellonian University, Gronostajowa 3, 30-387 Kraków, Poland.
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13
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Chen Y, Wang S, Ma Q, Wu X, Guo Q, Luo X, Tao L, Shen X. Utilizing endosomal capture for tumor therapy via membrane-lytic mechanism-based Pickering emulsion. J Control Release 2023; 354:523-537. [PMID: 36657600 DOI: 10.1016/j.jconrel.2023.01.035] [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: 08/05/2022] [Revised: 01/11/2023] [Accepted: 01/12/2023] [Indexed: 01/21/2023]
Abstract
Nanocarriers are easily captured by endosomes, where the abundant hydrolases inevitably destroy the nanocarriers and the drugs they carry, ultimately resulting in a compromised or lost therapeutic efficacy. Herein, we report a membrane-lytic mechanism-based Pickering emulsion that can in turn utilize this seemingly unfavorable endosomal capture behavior for tumor therapy. This Pickering emulsion is constructed as an oil-in-water (O/W) emulsion stabilized by the hybrid nanoparticles (HNPs) composed of two molecules with opposite charges, cetyl trimethylamine bromide (CTAB) and linoleic acid (LA), through electrostatic interaction (defined as HNPs@PE). After HNPs@PE enters the lysosomes through macropinocytosis-mediated endocytosis, LA can be protonated in response to the acidic stimulus, and causing the swelling or disintegration of HNPs due to the disrupted electrostatic interaction. The released CTAB holds strong membrane-lytic activity and can directly damage the lysosomal membranes. Under the acidic condition and the participation of excessive iron ions (II) in lysosomes, LA induces lipid peroxidation and the resulting lipid peroxides (LPO) will oxidize the lysosomal membranes, collectively causing the leakage of lysosome membranes and the release of contents into cytoplasm. Subsequently, the diffused CTAB and LPO will continue to attack the mitochondrial membranes and cell membranes, resulting in the death of different types of tumor cells both in vitro and in vivo due to membrane damage. This Pickering emulsion with membrane-lytic ability represents a potential self-anticancer nanocarrier.
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Affiliation(s)
- Ying Chen
- The State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guiyang 550025, China; The Department of Pharmacology of Materia Medical (the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), Guizhou Medical University, University Town, Guian New District, Guiyang 550025, China.
| | - Sibu Wang
- The State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guiyang 550025, China; The Department of Pharmacology of Materia Medical (the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), Guizhou Medical University, University Town, Guian New District, Guiyang 550025, China
| | - Qin Ma
- The State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guiyang 550025, China; The Department of Pharmacology of Materia Medical (the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), Guizhou Medical University, University Town, Guian New District, Guiyang 550025, China
| | - Xingjie Wu
- The State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guiyang 550025, China; The Department of Pharmacology of Materia Medical (the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), Guizhou Medical University, University Town, Guian New District, Guiyang 550025, China
| | - Qianqian Guo
- The State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guiyang 550025, China; The Department of Pharmacology of Materia Medical (the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), Guizhou Medical University, University Town, Guian New District, Guiyang 550025, China
| | - Xinghong Luo
- Jiangsu Simcere Pharmaceutical Co, Ltd., State Key Laboratory of Translational Medicine and Innovative Drug, 699-18 Xuanwu Avenue, Nanjing 210042,China
| | - Ling Tao
- The State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guiyang 550025, China; The Department of Pharmacology of Materia Medical (the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), Guizhou Medical University, University Town, Guian New District, Guiyang 550025, China.
| | - Xiangchun Shen
- The State Key Laboratory of Functions and Applications of Medicinal Plants & School of Pharmaceutical Sciences, Guizhou Medical University, University Town, Guian New District, Guiyang 550025, China; The Department of Pharmacology of Materia Medical (the High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province, the Key Laboratory of Optimal Utilization of Natural Medicine Resources), Guizhou Medical University, University Town, Guian New District, Guiyang 550025, China.
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14
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Dubashynskaya NV, Skorik YA. Patches as Polymeric Systems for Improved Delivery of Topical Corticosteroids: Advances and Future Perspectives. Int J Mol Sci 2022; 23:12980. [PMID: 36361769 PMCID: PMC9657685 DOI: 10.3390/ijms232112980] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/20/2022] [Accepted: 10/25/2022] [Indexed: 12/25/2023] Open
Abstract
Mucoadhesive polymer patches are a promising alternative for prolonged and controlled delivery of topical corticosteroids (CS) to improve their biopharmaceutical properties (mainly increasing local bioavailability and reducing systemic toxicity). The main biopharmaceutical advantages of patches compared to traditional oral dosage forms are their excellent bioadhesive properties and their increased drug residence time, modified and unidirectional drug release, improved local bioavailability and safety profile, additional pain receptor protection, and patient friendliness. This review describes the main approaches that can be used for the pharmaceutical R&D of oromucosal patches with improved physicochemical, mechanical, and pharmacological properties. The review mainly focuses on ways to increase the bioadhesion of oromucosal patches and to modify drug release, as well as ways to improve local bioavailability and safety by developing unidirectional -release poly-layer patches. Various techniques for obtaining patches and their influence on the structure and properties of the resulting dosage forms are also presented.
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Affiliation(s)
| | - Yury A. Skorik
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoy pr. V.O. 31, 199004 St. Petersburg, Russia
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15
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Pang LJ, Adeel M, Shakoor N, Guo KR, Ma DF, Ahmad MA, Lu GQ, Zhao MH, Li SE, Rui YK. Engineered Nanomaterials Suppress the Soft Rot Disease ( Rhizopus stolonifer) and Slow Down the Loss of Nutrient in Sweet Potato. NANOMATERIALS 2021; 11:nano11102572. [PMID: 34685013 PMCID: PMC8537040 DOI: 10.3390/nano11102572] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/25/2021] [Accepted: 09/26/2021] [Indexed: 11/16/2022]
Abstract
About 45% of the world’s fruit and vegetables are wasted, resulting in postharvest losses and contributing to economic losses ranging from $10 billion to $100 billion worldwide. Soft rot disease caused by Rhizopus stolonifer leads to postharvest storage losses of sweet potatoes. Nanoscience stands as a new tool in our arsenal against these mounting challenges that will restrict efforts to achieve and maintain global food security. In this study, three nanomaterials (NMs) namely C60, CuO, and TiO2 were evaluated for their potential application in the restriction of Rhizopus soft rot disease in two cultivars of sweet potato (Y25, J26). CuO NM exhibited a better antifungal effect than C60 and TiO2 NMs. The contents of three important hormones, indolepropionic acid (IPA), gibberellic acid 3 (GA-3), and indole-3-acetic acid (IAA) in the infected J26 sweet potato treated with 50 mg/L CuO NM were significantly higher than those of the control by 14.5%, 10.8%, and 24.1%. CuO and C60 NMs promoted antioxidants in both cultivars of sweet potato. Overall, CuO NM at 50 mg/L exhibited the best antifungal properties, followed by TiO2 NM and C60 NM, and these results were further confirmed through scanning electron microscope (SEM) analysis. The use of CuO NMs as an antifungal agent in the prevention of Rhizopus stolonifer infections in sweet potatoes could greatly reduce postharvest storage and delivery losses.
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Affiliation(s)
- Lin-Jiang Pang
- College of Food and Health, Zhejiang A&F University, Hangzhou 311300, China; (L.-J.P.); (M.-H.Z.); (S.-E.L.)
- School of Life Science, Jiangsu Normal University, Xuzhou 221116, China
| | - Muhammed Adeel
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; (M.A.); (N.S.); (K.-R.G.); (Y.-K.R.)
- BNU-HKUST Laboratory of Green Innovation, Advanced Institute of Natural Sciences, Beijing Normal University Zhuhai Subcampus, 18 Jinfeng Road, Tangjiawan, Zhuhai 519085, China
| | - Noman Shakoor
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; (M.A.); (N.S.); (K.-R.G.); (Y.-K.R.)
| | - Ke-Rui Guo
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; (M.A.); (N.S.); (K.-R.G.); (Y.-K.R.)
- Laboratory of Soil Science, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Dai-Fu Ma
- School of Life Science, Jiangsu Normal University, Xuzhou 221116, China
- Key Laboratory of Biology and Genetic Improvement of Sweet Potato, Ministry of Agriculture and Rural Affairs, Xuzhou Institute of Agricultural Sciences of the Xuhuai District of Jiangsu Province, Xuzhou 221121, China
- Correspondence: or (D.-F.M.); (G.-Q.L.)
| | - Muhammad Arslan Ahmad
- Shenzhen Key Laboratory of Marine Bioresource and Eco-Environmental Science, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China;
| | - Guo-Quan Lu
- College of Food and Health, Zhejiang A&F University, Hangzhou 311300, China; (L.-J.P.); (M.-H.Z.); (S.-E.L.)
- Correspondence: or (D.-F.M.); (G.-Q.L.)
| | - Mei-Hui Zhao
- College of Food and Health, Zhejiang A&F University, Hangzhou 311300, China; (L.-J.P.); (M.-H.Z.); (S.-E.L.)
| | - Sheng-E Li
- College of Food and Health, Zhejiang A&F University, Hangzhou 311300, China; (L.-J.P.); (M.-H.Z.); (S.-E.L.)
| | - Yu-Kui Rui
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; (M.A.); (N.S.); (K.-R.G.); (Y.-K.R.)
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16
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Sun C, Zhu C, Tang Y, Ren D, Cai Y, Zhou G, Wang Y, Xu L, Zhu P. Inhibition of Botrytis cinerea and control of gray mold on table grapes by calcium propionate. FOOD QUALITY AND SAFETY 2021. [DOI: 10.1093/fqsafe/fyab016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Objectives
The gray mold fungus Botrytis cinerea (B. cinerea) infects a wide range of crops before and after harvest, causing huge losses worldwide. Inhibition mechanisms of B. cinerea in vitro and in plants by calcium propionate (CP), generally recognized as a safe substance, are described in this study.
Materials and methods
Wild-type and transgenic mutant strains of B. cinerea were used in the study to evaluate the effects of CP on fungal growth and development in vitro. Plant materials including tomato leaves and table grapes were tested for controlling efficiency of CP against gray mold deterioration in vivo.
Results
Mycelial growth of B. cinerea was inhibited by CP in a dose-dependent manner with occasional disruption of hyphal tips, causing cellular collapse and efflux of cell contents. Staining with fluorescein diacetate and propidium iodide indicated that CP decreased fungal cell viability. Inhibition efficiency of CP against B. cinerea was enhanced by reducing pH. In contrast, the vel1 mutant, which exhibited deficiency in acid production, was more resistant to CP, suggesting that inhibition of B. cinerea by CP is enhanced by the acidification ability of the fungus itself. Additionally, CP inhibited infection cushion development by germlings of B. cinerea. Infection assays with tomato leaves and table grapes showed that CP inhibited decay development in both host tissues. Moreover, application of CP on grapes 3 days prior to harvest could contribute to management of deterioration caused by spontaneous fungal diseases during storage.
Conclusion
CP can suppress hyphal growth, inhibit infection cushion development, and reduce the virulence of B. cinerea. CP is thus promising for practical management of gray mold in fruit crops and merits further evaluation.
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17
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Sun Y, Shang L, Xia X, Meng D, Ren Y, Zhang J, Yao M, Zhou X, Wang Y. Cellular uptake of chitosan and its role in antifungal action against Penicillium expansum. Carbohydr Polym 2021; 269:118349. [PMID: 34294354 DOI: 10.1016/j.carbpol.2021.118349] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 05/31/2021] [Accepted: 06/13/2021] [Indexed: 12/13/2022]
Abstract
Chitosan has wide-spectrum antimicrobial activity but knowledge of its antifungal mechanism is still incomplete. In this study, transcriptome of Penicillium expansum upon chitosan treatment was analyzed by RNA-Seq. KEGG enrichment analysis revealed that endocytosis as well as other physiological pathways was regulated by chitosan treatment. Clathrin adaptor protein mu-subunit (PeCAM) gene, which encodes a protein associated with clathrin-dependent endocytosis, was up-regulated after chitosan treatment. Deletion of PeCAM resulted in changes of conidial, hyphal and colonial morphology. Confocal microscopy images of the distribution of fluorescein isothiocyanate-labeled chitosan confirmed cellular internalization of chitosan. However, deletion of PeCAM almost completely blocked uptake of chitosan into fungal cells and ΔPeCAM mutant exhibited less sensitivity to chitosan compared with wild type, suggesting that chitosan uptake is mediated by clathrin-dependent endocytosis and internalized chitosan also plays an important role in its antifungal activity. Collectively, our results provide a new insight into the antifungal mechanism of chitosan.
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Affiliation(s)
- Yemei Sun
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Linlin Shang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xiaoshuang Xia
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Di Meng
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yun Ren
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Jiaqi Zhang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Man Yao
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xinghua Zhou
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yun Wang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
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18
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Zhang Y, Li T, Xu M, Guo J, Zhang C, Feng Z, Peng X, Li Z, Xing K, Qin S. Antifungal effect of volatile organic compounds produced by Pseudomonas chlororaphis subsp. aureofaciens SPS-41 on oxidative stress and mitochondrial dysfunction of Ceratocystis fimbriata. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2021; 173:104777. [PMID: 33771256 DOI: 10.1016/j.pestbp.2021.104777] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 12/20/2020] [Accepted: 12/22/2020] [Indexed: 05/27/2023]
Abstract
Ceratocystis fimbriata is the pathogen of black rot disease, which widely exists in sweet potato producing areas all over the world. The antifungal activity of volatile organic compounds (VOCs) released by Pseudomonas chlororaphis subsp. aureofaciens SPS-41 against C. fimbriata was reported in our previous study. In this study, we attempted to reveal the underlying antifungal mechanism of SPS-41 volatiles. Our results showed that the VOCs released by SPS-41 caused the morphological change of hyphae, destroyed the integrity of cell membrane, reduced the content of ergosterol, and induced massive accumulation of reactive oxygen species in C. fimbriata cells. Furthermore, SPS-41 fumigation decreased the mitochondrial membrane potential, acetyl-CoA and pyruvate content of C. fimbriata cells, as well as the mitochondrial dehydrogenases activity. In addition, the VOCs generated by SPS-41 reduced the intracellular ATP content and increased the extracellular ATP content of C. fimbriata. In summary, SPS-41 fumigation exerted its antifungal activity by inducing oxidative stress and mitochondrial dysfunction in C. fimbriata.
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Affiliation(s)
- Yu Zhang
- School of Life Science, the Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou 221116, Jiangsu, PR China
| | - Tengjie Li
- School of Life Science, the Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou 221116, Jiangsu, PR China
| | - Mingjie Xu
- School of Life Science, the Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou 221116, Jiangsu, PR China
| | - Jianheng Guo
- School of Life Science, the Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou 221116, Jiangsu, PR China
| | - Chunmei Zhang
- School of Life Science, the Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou 221116, Jiangsu, PR China
| | - Zhaozhong Feng
- School of Life Science, the Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou 221116, Jiangsu, PR China
| | - Xue Peng
- School of Life Science, the Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou 221116, Jiangsu, PR China
| | - Zongyun Li
- School of Life Science, the Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou 221116, Jiangsu, PR China
| | - Ke Xing
- School of Life Science, the Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou 221116, Jiangsu, PR China.
| | - Sheng Qin
- School of Life Science, the Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou 221116, Jiangsu, PR China
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da Silva NS, Araújo NK, Daniele-Silva A, Oliveira JWDF, de Medeiros JM, Araújo RM, Ferreira LDS, Rocha HAO, Silva-Junior AA, Silva MS, Fernandes-Pedrosa MDF. Antimicrobial Activity of Chitosan Oligosaccharides with Special Attention to Antiparasitic Potential. Mar Drugs 2021; 19:md19020110. [PMID: 33673266 PMCID: PMC7917997 DOI: 10.3390/md19020110] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 02/05/2021] [Accepted: 02/08/2021] [Indexed: 02/07/2023] Open
Abstract
The global rise of infectious disease outbreaks and the progression of microbial resistance reinforce the importance of researching new biomolecules. Obtained from the hydrolysis of chitosan, chitooligosaccharides (COSs) have demonstrated several biological properties, including antimicrobial, and greater advantage over chitosan due to their higher solubility and lower viscosity. Despite the evidence of the biotechnological potential of COSs, their effects on trypanosomatids are still scarce. The objectives of this study were the enzymatic production, characterization, and in vitro evaluation of the cytotoxic, antibacterial, antifungal, and antiparasitic effects of COSs. NMR and mass spectrometry analyses indicated the presence of a mixture with 81% deacetylated COS and acetylated hexamers. COSs demonstrated no evidence of cytotoxicity upon 2 mg/mL. In addition, COSs showed interesting activity against bacteria and yeasts and a time-dependent parasitic inhibition. Scanning electron microscopy images indicated a parasite aggregation ability of COSs. Thus, the broad biological effect of COSs makes them a promising molecule for the biomedical industry.
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Affiliation(s)
- Nayara Sousa da Silva
- Postgraduate Program in Pharmacy, Faculty of Pharmacy, Federal University of Rio Grande do Norte, Natal 59012-570, Brazil;
| | - Nathália Kelly Araújo
- Department of Pharmacy, Faculty of Pharmacy, Federal University of Rio Grande do Norte, Natal 59012-570, Brazil; (N.K.A.); (L.D.S.F.); (A.A.S.-J.)
| | - Alessandra Daniele-Silva
- Postgraduate Program in Development and Technological Innovation in Medicines, Bioscience Center, Federal University of Rio Grande do Norte, Natal 59072-970, Brazil;
| | | | - Júlia Maria de Medeiros
- Postgraduate Program in Chemical Engineering, Technology Center, Federal University of Rio Grande do Norte, Natal 59072-970, Brazil;
| | - Renata Mendonça Araújo
- Chemistry Institute, Federal University of Rio Grande do Norte, Natal 59072-970, Brazil;
| | - Leandro De Santis Ferreira
- Department of Pharmacy, Faculty of Pharmacy, Federal University of Rio Grande do Norte, Natal 59012-570, Brazil; (N.K.A.); (L.D.S.F.); (A.A.S.-J.)
| | | | - Arnóbio Antônio Silva-Junior
- Department of Pharmacy, Faculty of Pharmacy, Federal University of Rio Grande do Norte, Natal 59012-570, Brazil; (N.K.A.); (L.D.S.F.); (A.A.S.-J.)
| | - Marcelo Sousa Silva
- Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Federal University of Rio Grande do Norte, Natal 59012-570, Brazil;
- Global Health and Tropical Medicine, Institute of Hygiene and Tropical Medicine, University of Nova Lisboa, 1099-085 Lisbon, Portugal
| | - Matheus de Freitas Fernandes-Pedrosa
- Department of Pharmacy, Faculty of Pharmacy, Federal University of Rio Grande do Norte, Natal 59012-570, Brazil; (N.K.A.); (L.D.S.F.); (A.A.S.-J.)
- Correspondence: ; Tel.: +55-84-3342-9820
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Secretory production in Escherichia coli of a GH46 chitosanase from Chromobacterium violaceum, suitable to generate antifungal chitooligosaccharides. Int J Biol Macromol 2020; 165:1482-1495. [PMID: 33017605 DOI: 10.1016/j.ijbiomac.2020.09.221] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 09/18/2020] [Accepted: 09/24/2020] [Indexed: 01/23/2023]
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21
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do Nascimento EG, de Azevedo EP, Alves-Silva MF, Aragão CFS, Fernandes-Pedrosa MF, da Silva-Junior AA. Supramolecular aggregates of cyclodextrins with co-solvent modulate drug dispersion and release behavior of poorly soluble corticosteroid from chitosan membranes. Carbohydr Polym 2020; 248:116724. [PMID: 32919548 DOI: 10.1016/j.carbpol.2020.116724] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 06/13/2020] [Accepted: 06/30/2020] [Indexed: 01/29/2023]
Abstract
In this study, the ability of different beta-cyclodextrins to facilitate homogeneous dispersion of triamcinolone acetonide (TA) into chitosan membranes is assessed. Drug loading was assessed through atomic force microscopy (AFM), scanning electron microscopy (MEV-FEG), and X-ray diffraction analyses. Drug interactions with the co-polymer were investigated with Fourier transform infrared spectroscopy, thermal analyses. Swelling assay, and in vitro drug release experiment were used to assess TA release behavior. Undispersed particles of drug were observed to remain in the simple chitosan membranes. Hydroxypropyl-β-cyclodextrin enabled the dispersion of TA into chitosan membranes and subsequent sustained drug release. In addition, the membrane performance as a drug delivery device is improved by adding specified amounts of the co-solvent triethanolamine. The experimental data presented in this study confirm the utility of our novel and alternative approach for obtaining a promising device for slow and controlled release of glucocorticoids, such as triamcinolone acetonide, for topical ulcerations.
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Affiliation(s)
- Ednaldo Gomes do Nascimento
- Laboratory of Pharmaceutical Technology and Biotechnology, Department of Pharmacy, Federal University of Rio Grande do Norte, UFRN, Gal. Gustavo Cordeiro de Farias, Petrópolis, 59072-570, Natal, RN, Brazil
| | - Eduardo Pereira de Azevedo
- Department of Pharmacy, Federal University of Potiguar, UnP, Av. Sen. Salgado Filho, 1610, Lagoa Nova, 59056-000, Natal, RN, Brazil
| | - Mariana Farias Alves-Silva
- Laboratory of Pharmaceutical Technology and Biotechnology, Department of Pharmacy, Federal University of Rio Grande do Norte, UFRN, Gal. Gustavo Cordeiro de Farias, Petrópolis, 59072-570, Natal, RN, Brazil
| | - Cícero Flávio S Aragão
- Laboratory of Quality Control of Pharmaceuticals, Department of Pharmacy, Federal University of Rio Grande do Norte, UFRN, Gal. Gustavo Cordeiro de Farias, Petrópolis, 59072-570, Natal, RN, Brazil
| | - Matheus F Fernandes-Pedrosa
- Laboratory of Pharmaceutical Technology and Biotechnology, Department of Pharmacy, Federal University of Rio Grande do Norte, UFRN, Gal. Gustavo Cordeiro de Farias, Petrópolis, 59072-570, Natal, RN, Brazil
| | - Arnóbio Antônio da Silva-Junior
- Laboratory of Pharmaceutical Technology and Biotechnology, Department of Pharmacy, Federal University of Rio Grande do Norte, UFRN, Gal. Gustavo Cordeiro de Farias, Petrópolis, 59072-570, Natal, RN, Brazil.
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Effects of Chitosan-Gentamicin Conjugate Supplement on Non-Specific Immunity, Aquaculture Water, Intestinal Histology and Microbiota of Pacific White Shrimp ( Litopenaeus vannamei). Mar Drugs 2020; 18:md18080419. [PMID: 32785070 PMCID: PMC7460103 DOI: 10.3390/md18080419] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/07/2020] [Accepted: 08/07/2020] [Indexed: 12/17/2022] Open
Abstract
When the aquaculture water environment deteriorates or the temperature rises, shrimp are susceptible to viral or bacterial infections, causing a large number of deaths. This study comprehensively evaluated the effects of the oral administration of a chitosan-gentamicin conjugate (CS-GT) after Litopenaeus vannamei were infected with Vibrio parahaemolyticus, through nonspecific immunity parameter detection, intestinal morphology observation, and the assessment of microbial flora diversification by 16S rRNA gene sequencing. The results showed that the oral administration of CS-GT significantly increased total hemocyte counts and reduced hemocyte apoptosis in shrimp (p < 0.05). The parameters (including superoxide dismutase, glutathione peroxidase, glutathione, lysozyme, acid phosphatase, alkaline phosphatase, and phenoloxidase) were significantly increased (p < 0.05). The integrity of the intestinal epithelial cells and basement membrane were enhanced, which correspondingly alleviated intestinal injury. In terms of the microbiome, the abundances of Vibrio (Gram-negative bacteria and food-borne pathogens) in the water and gut were significantly reduced. The canonical correspondence analysis (CCA) showed that the abundances of Vibrio both in the water and gut were negatively correlated with CS-GT dosage. In conclusion, the oral administration of CS-GT can improve the immunity of shrimp against pathogenic bacteria and significantly reduce the relative abundances of Vibrio in aquaculture water and the gut of Litopenaeus vannamei.
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Natural Compounds for Wood Protection against Fungi-A Review. Molecules 2020; 25:molecules25153538. [PMID: 32748877 PMCID: PMC7435604 DOI: 10.3390/molecules25153538] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 07/31/2020] [Accepted: 08/01/2020] [Indexed: 02/07/2023] Open
Abstract
Wood is a renewable, versatile material with multiple applications and the largest terrestrial pool of sequestered carbon. However, it is susceptible to degradation, mainly caused by wood-decaying fungi. Since several traditional wood preservatives have been banned owing to their detrimental effects on humans and the environment, extending the lifespan of wood products using new generation natural preservatives is an imperative from the perspectives of human health and environmental protection. Several natural compounds of plant and animal origin have been tested for their fungicidal properties, including essential oils, tannins, wood extractives, alkaloids, propolis or chitosan; and their enormous potential in wood protection has been shown. Although they are not free of limitations, the potential methods to overcome their drawbacks and enhance their bioactivity already exist, such as co-impregnation with different polymers, cross-linkers, metal chelators or antioxidants. The presence of the discrepancies between laboratory tests and the field performance, as well as legislation-related problems resulting from the lack of standards defining the quality and performance of natural protective formulations, however, create an urgent need for further thorough research and arrangements. The collaboration with other industries interested in the utilisation of natural active compounds will reduce the associated costs, thus, will facilitate the successful implementation of alternative antifungal agents.
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Wang J, Yang R, Xiao Z, Xu Q, Li P, Ma F. Dihydrochalcones in Malus inhibit bacterial growth by reducing cell membrane integrity. Food Funct 2020; 11:6517-6527. [PMID: 32633749 DOI: 10.1039/d0fo00037j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In recent years, increasing research has evaluated the use of natural products as antimicrobial food additives. In this study, antibacterial activity was evaluated for six dihydrochalcone compounds from Malus. Phloretin and 3-hydroxyphloretin exhibited antibacterial effects on both Gram-positive and Gram-negative bacteria, and the antibacterial capacity of these compounds was greater than that of their glycosylated derivatives. Within a certain range, dihydrochalcone hydrophobicity was positively correlated with antibacterial activity. Additionally, glycosylation at the 2'-position of the A-ring and hydroxyl group at the 3-position of the B-ring played a key role in the antibacterial activity of dihydrochalcones. Phloretin and 3-hydroxyphloretin caused damage to bacterial cells by significantly increasing protein and inorganic phosphate leakage. Compared to phloretin, 3-hydroxyphloretin exhibited a smaller effect on Gram-positive Micrococcus luteus and a greater effect on Gram-negative Klebsiella pneumoniae, suggesting different antibacterial mechanisms. At a low dihydrochalcone concentration, the respiration of M. luteus did not change, while membrane permeability increased significantly. These results indicate that the antibacterial mechanism of M. luteus was primarily damage to the cell membrane. However, damage to respiration and the cell membrane might occur simultaneously in K. pneumoniae, suggesting that the antibacterial mechanism of dihydrochalcones also depends on strain type. This study demonstrated the broad-spectrum antibacterial properties of dihydrochalcone compounds commonly found in the genus Malus to foodborne pathogens and elucidated the antibacterial mechanisms. It provides theoretical guidance for future research and application of dihydrochalcones in the food industry.
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Affiliation(s)
- Jinxiao Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China.
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25
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Li T, Zhang Y, Xu M, Liu Y, Zhang C, Zhang Y, Peng X, Li Z, Qin S, Xing K. Novel antifungal mechanism of oligochitosan by triggering apoptosis through a metacaspase-dependent mitochondrial pathway in Ceratocystis fimbriata. Carbohydr Polym 2020; 245:116574. [PMID: 32718651 DOI: 10.1016/j.carbpol.2020.116574] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 06/02/2020] [Accepted: 06/03/2020] [Indexed: 12/16/2022]
Abstract
The antifungal effects of oligochitosan (OCS) against Ceratocystis fimbriata that causes black rot disease in sweet potato and its apoptosis mechanism were evaluated. OCS restrained the mycelial growth and spores germination of C. fimbriata, and decreased the ergosterol content of cell membrane. Transmission electron microscopy observation and flow cytometry analysis revealed that OCS induced morphology changes with smaller size and increased granularity of C. fimbriata, which was the typical feature of apoptosis. To clarify the apoptosis mechanism induced by OCS, a series of apoptosis-related parameters were analyzed. Results showed that OCS induced reactive oxygen species accumulation, Ca2+ homeostasis dysregulation, mitochondrial dysfunction and metacaspase activation, coupled with hallmarks of apoptosis including phosphatidylserine externalization, DNA fragmentation, and nuclear condensation. In summary, OCS triggered apoptosis through a metacaspase-dependent mitochondrial pathway in C. fimbriata. These findings have important implications for the application of OCS to control pathogens in food and agriculture.
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Affiliation(s)
- Tengjie Li
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou, 221116, Jiangsu, PR China.
| | - Yu Zhang
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou, 221116, Jiangsu, PR China.
| | - Mingjie Xu
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou, 221116, Jiangsu, PR China.
| | - Yuanfang Liu
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou, 221116, Jiangsu, PR China; Caoqiao Middle School of Suzhou, Suzhou, 215008, Jiangsu, PR China.
| | - Chunmei Zhang
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou, 221116, Jiangsu, PR China.
| | - Yanhua Zhang
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou, 221116, Jiangsu, PR China.
| | - Xue Peng
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou, 221116, Jiangsu, PR China.
| | - Zongyun Li
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou, 221116, Jiangsu, PR China.
| | - Sheng Qin
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou, 221116, Jiangsu, PR China.
| | - Ke Xing
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou, 221116, Jiangsu, PR China.
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26
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Varlamov VP, Il'ina AV, Shagdarova BT, Lunkov AP, Mysyakina IS. Chitin/Chitosan and Its Derivatives: Fundamental Problems and Practical Approaches. BIOCHEMISTRY (MOSCOW) 2020; 85:S154-S176. [PMID: 32087058 DOI: 10.1134/s0006297920140084] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
In this review, we present the data on the natural occurrence of chitin and its partially or fully deacetylated derivative chitosan, as well as their properties, methods of modification, and potential applications of derivatives with bactericidal, fungicidal, and antioxidant activities. The structure and physicochemical characteristics of the polymers, their functions, and features of chitin microbial synthesis and degradation, including the processes occurring in nature, are described. New data on the hydrolytic microorganisms capable of chitin degradation under extreme conditions are presented. Special attention is focused on the effect of physicochemical characteristics of chitosan, including molecular weight, degree of deacetylation, polydispersity index, and number of amino group derivatives (quaternized, succinyl, etc.) on the antimicrobial and antioxidant properties of modified polymers that can be of particular interest for biotechnology, medicine, and agriculture. Analysis of the available literature data confirms the importance of fundamental research to broaden our knowledge on the occurrence of chitin and chitosan in nature, their role in global biosphere cycles, and prospects of applied research aimed at using chitin, chitosan, and their derivatives in various aspects of human activity.
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Affiliation(s)
- V P Varlamov
- Laboratory of Biopolymer Engineering, Institute of Bioengineering, Federal Research Center "Fundamentals of Biotechnology", Russian Academy of Sciences, Moscow, 117312, Russia.
| | - A V Il'ina
- Laboratory of Biopolymer Engineering, Institute of Bioengineering, Federal Research Center "Fundamentals of Biotechnology", Russian Academy of Sciences, Moscow, 117312, Russia
| | - B Ts Shagdarova
- Laboratory of Biopolymer Engineering, Institute of Bioengineering, Federal Research Center "Fundamentals of Biotechnology", Russian Academy of Sciences, Moscow, 117312, Russia
| | - A P Lunkov
- Laboratory of Biopolymer Engineering, Institute of Bioengineering, Federal Research Center "Fundamentals of Biotechnology", Russian Academy of Sciences, Moscow, 117312, Russia
| | - I S Mysyakina
- Winogradsky Institute of Microbiology, Federal Research Center "Fundamentals of Biotechnology", Russian Academy of Sciences, Moscow, 117312, Russia
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27
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LI M, CHEN C, XIA X, GARBA B, SHANG L, WANG Y. Proteomic analysis of the inhibitory effect of chitosan on Penicillium expansum. FOOD SCIENCE AND TECHNOLOGY 2020. [DOI: 10.1590/fst.40418] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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28
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Qin Y, Li P, Guo Z. Cationic chitosan derivatives as potential antifungals: A review of structural optimization and applications. Carbohydr Polym 2020; 236:116002. [PMID: 32172836 DOI: 10.1016/j.carbpol.2020.116002] [Citation(s) in RCA: 84] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 02/12/2020] [Accepted: 02/12/2020] [Indexed: 12/23/2022]
Abstract
The increasing resistance of pathogen fungi poses a global public concern. There are several limitations in current antifungals, including few available fungicides, severe toxicity of some fungicides, and drug resistance. Therefore, there is an urgent need to develop new antifungals with novel targets. Chitosan has been recognized as a potential antifungal substance due to its good biocompatibility, biodegradability, non-toxicity, and availability in abundance, but its applications are hampered by the low charge density results in low solubility at physiological pH. It is believed that enhancing the positive charge density of chitosan may be the most effective approach to improve both its solubility and antifungal activity. Hence, this review mainly focuses on the structural optimization strategy of cationic chitosan and the potential antifungal applications. This review also assesses and comments on the challenges, shortcomings, and prospect of cationic chitosan derivatives as antifungal therapy.
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Affiliation(s)
- Yukun Qin
- Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology (Qingdao), No. 1 Wenhai Road, Qingdao, 266237, China
| | - Pengcheng Li
- Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology (Qingdao), No. 1 Wenhai Road, Qingdao, 266237, China.
| | - Zhanyong Guo
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China.
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29
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Role of rheological properties on physical chitosan aerogels obtained by supercritical drying. Carbohydr Polym 2020; 233:115850. [PMID: 32059901 DOI: 10.1016/j.carbpol.2020.115850] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 01/01/2020] [Accepted: 01/08/2020] [Indexed: 12/16/2022]
Abstract
Chitosan aerogels were obtained after using supercritical carbon dioxide to dry physical hydrogels, studying the effect of the rheological behavior of hydrogels and solutions on the final aerogels properties. An increase on the solutions pseudoplasticity increased the subsequent hydrogels physical entanglement, without showing a significant effect on aerogels morphology (nanoporous) and textural properties (pores of about 10 nm). However, an increase of hydrogel physical entanglement promoted the formation of aerogels with a higher compressive strength (from 0.2 to 0.80 MPa) and higher thermal decomposition range, while decreasing the porosity (from 90 % to 94 %). Aerogels stress-strain responses were also successfully fitted using a hyperelastic equation with three adjustable parameters (Yeoh), showing that this type of models must be taken into account when large stresses are studied.
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30
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Glycoalkaloids: Structure, Properties, and Interactions with Model Membrane Systems. Processes (Basel) 2019. [DOI: 10.3390/pr7080513] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The glycoalkaloids which are secondary metabolites from plants have proven to be of significant interest for their biological properties both in terms of their roles in plant biology and the effects they exhibit when ingested by humans. The main feature of the action of glycoalkaloids is their strong binding to 3β-hydroxysterols, such as cholesterol, to form complexes with the consequence that membrane structure is significantly perturbed, and leakage or release of contents inside cells or liposomes becomes possible. The glycoalkaloids have been studied for their ability to inhibit the growth of cancer cells and in other roles such as vaccine adjuvants and as synergistic agents when combined with other therapeutics. The glycoalkaloids have rich and complex physical behavior when interacting with model membranes for which many aspects are yet to be understood. This review introduces the general properties of glycoalkaloids and aspects of their behavior, and then summarizes their effects against model membrane systems. While there are many glycoalkaloids that have been identified, most physical or biological studies have focused on the readily available ones from tomatoes (α-tomatine), potatoes (α-chaconine and α-solanine), and eggplant (α-solamargine and α-solasonine).
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31
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Casadidio C, Peregrina DV, Gigliobianco MR, Deng S, Censi R, Di Martino P. Chitin and Chitosans: Characteristics, Eco-Friendly Processes, and Applications in Cosmetic Science. Mar Drugs 2019; 17:E369. [PMID: 31234361 PMCID: PMC6627199 DOI: 10.3390/md17060369] [Citation(s) in RCA: 111] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 06/05/2019] [Accepted: 06/19/2019] [Indexed: 12/13/2022] Open
Abstract
Huge amounts of chitin and chitosans can be found in the biosphere as important constituents of the exoskeleton of many organisms and as waste by worldwide seafood companies. Presently, politicians, environmentalists, and industrialists encourage the use of these marine polysaccharides as a renewable source developed by alternative eco-friendly processes, especially in the production of regular cosmetics. The aim of this review is to outline the physicochemical and biological properties and the different bioextraction methods of chitin and chitosan sources, focusing on enzymatic deproteinization, bacteria fermentation, and enzymatic deacetylation methods. Thanks to their biodegradability, non-toxicity, biocompatibility, and bioactivity, the applications of these marine polymers are widely used in the contemporary manufacturing of biomedical and pharmaceutical products. In the end, advanced cosmetics based on chitin and chitosans are presented, analyzing different therapeutic aspects regarding skin, hair, nail, and oral care. The innovative formulations described can be considered excellent candidates for the prevention and treatment of several diseases associated with different body anatomical sectors.
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Affiliation(s)
| | | | | | - Siyuan Deng
- School of Pharmacy, University of Camerino, 62032 Camerino, Italy.
| | - Roberta Censi
- School of Pharmacy, University of Camerino, 62032 Camerino, Italy.
| | - Piera Di Martino
- School of Pharmacy, University of Camerino, 62032 Camerino, Italy.
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32
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Zhang Y, Li T, Liu Y, Li X, Zhang C, Feng Z, Peng X, Li Z, Qin S, Xing K. Volatile Organic Compounds Produced by Pseudomonas chlororaphis subsp. aureofaciens SPS-41 as Biological Fumigants To Control Ceratocystis fimbriata in Postharvest Sweet Potatoes. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:3702-3710. [PMID: 30860830 DOI: 10.1021/acs.jafc.9b00289] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The biocontrol activity and chemical composition of the volatile organic compounds (VOCs) produced by Pseudomonas chlororaphis subsp. aureofaciens SPS-41 were investigated. The VOCs inhibited mycelial growth and spore germination in Ceratocystis fimbriata, which causes black rot disease in sweet potato tuber roots (TRs) and showed wide-spectrum antifungal activity against several plant pathogenic fungi. A microscopic examination of C. fimbriata cells suggested morphological changes and a loss of cellular contents. Different inoculation strategies significantly affected the antifungal activity of the VOCs. In the volatile profile of SPS-41, the most abundant compound, 3-methyl-1-butanol, followed by phenylethyl alcohol and 2-methyl-1-butanol showed strong inhibition toward C. fimbriata. The weight loss rate and disease severity of the TRs were significantly reduced in response to the VOCs emitted by SPS-41. The results suggest that the VOCs produced by P. chlororaphis subsp. aureofaciens SPS-41 might constitute an attractive biological fumigant for controlling black rot disease in sweet potato TRs.
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Affiliation(s)
| | | | | | - Xiaoyan Li
- College of Life Sciences , Northeast Forestry University , Harbin 150040 , Heilongjiang , P.R. China
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Zhang J, Tan W, Wei L, Chen Y, Mi Y, Sun X, Li Q, Dong F, Guo Z. Synthesis of urea-functionalized chitosan derivatives for potential antifungal and antioxidant applications. Carbohydr Polym 2019; 215:108-118. [PMID: 30981335 DOI: 10.1016/j.carbpol.2019.03.067] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 03/19/2019] [Accepted: 03/19/2019] [Indexed: 01/13/2023]
Abstract
In the current study, five novel urea-functionalized chitosan derivatives were synthesized via condensation reactions of chloroacetyl chitosan (CTCS) with urea groups bearing nitrogen-containing heterocycles. In order to identify the structure characteristics of chitosan derivatives, FT-IR, 1H NMR spectroscopy, and elemental analysis were carried out. The antifungal activity of the derivatives against four species of phytopathogen (Fusarium oxysporum f. sp. niveum, Phomopsis asparagus, Fusarium oxysporum f. sp. cucumebrium Owen, and Botrytis cinerea) was evaluated. Furthermore, the antioxidant activity of chitosan derivatives was tested by hydroxyl-radical scavenging and superoxide-radical scavenging assays. The results indicated that chitosan derivatives bearing urea groups displayed superior bioactivity compared with chitosan. Besides, L929 cells were adopted for cytotoxicity test of chitosan and synthesized samples by CCK-8 assay and all samples showed decreased cytotoxicity. These results suggested that the novel urea-functionalized chitosan derivatives could be an ideal biomaterial for antifungal and antioxidant applications.
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Affiliation(s)
- Jingjing Zhang
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wenqiang Tan
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China
| | - Lijie Wei
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yuan Chen
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yingqi Mi
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xueqi Sun
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Qing Li
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China
| | - Fang Dong
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China
| | - Zhanyong Guo
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
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34
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Chitosan and chitosan nanoparticles induced expression of pathogenesis-related proteins genes enhances biotic stress tolerance in tomato. Int J Biol Macromol 2019; 125:948-954. [DOI: 10.1016/j.ijbiomac.2018.12.167] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 12/17/2018] [Accepted: 12/18/2018] [Indexed: 02/07/2023]
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35
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Xing K, Li TJ, Liu YF, Zhang J, Zhang Y, Shen XQ, Li XY, Miao XM, Feng ZZ, Peng X, Li ZY, Qin S. Antifungal and eliciting properties of chitosan against Ceratocystis fimbriata in sweet potato. Food Chem 2018; 268:188-195. [DOI: 10.1016/j.foodchem.2018.06.088] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 06/11/2018] [Accepted: 06/18/2018] [Indexed: 12/18/2022]
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