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Alvares JJ, Gaonkar SK, Naik CC, Asogekar P, Furtado IJ. Characterization of Mn 3 O 4 -MnO 2 nanocomposites biosynthesized by cell lysate of Haloferax alexandrinus GUSF-1. J Basic Microbiol 2023; 63:996-1006. [PMID: 37160695 DOI: 10.1002/jobm.202300023] [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: 01/24/2023] [Revised: 04/13/2023] [Accepted: 04/20/2023] [Indexed: 05/11/2023]
Abstract
Manganese oxide nanocomposites attract huge attention in various biotechnological fields due to their extensive catalytic properties. This study reports an easy, rapid, and cost-effective method of using the cell lysate of haloarchaeon, Haloferax alexandrinus GUSF-1 for the synthesis of manganese oxide nanoparticles. The reaction between the cell lysate and manganese sulfate resulted in the formation of a dark brown precipitate within 48 h at room temperature. The X-ray diffraction pattern showed the existence of Mn3 O4 and MnO2 phases consistent with the JCPDS card no. (01-075-1560 and 00-050-0866). The dark brown colloidal suspension of MnO3 -MnO2 in methanol showed maximum absorption between 220 and 260 nm. The EDX spectrum confirmed the presence of manganese and oxygen. The Transmission electron microscopy revealed the spherical morphology with an average particle size between 30 and 60 nm. The magnetic moment versus magnetic field (MH) curve, at room temperature (300 K) did not saturate even at a high magnetic field (±3T) indicating the paramagnetic nature of the prepared nanocomposite. The Atomic Emission Spectroscopic analysis showed a negligible amount of soluble manganese (0.03 ppm in 50 ppm) in the Mn3 O4 -MnO2 suspension suggesting the maximum stability of the material in the solvent over time. Interstingly, Mn3 O4 -MnO2 nanocomposites evidenced antimicrobial activity in the order of Pseudomonas aeruginosa > Salmonella typhi > Escherichia coli > Proteus vulgaris > Candida albicans > Staphylococcus aureus. Conclusively, this is the first report on the formation of Mn3 O4 -MnO2 nanocomposites using cell lysate of salt pan haloarcheon Haloferax alexandrinus GUSF-1 with antimicrobial potential.
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Affiliation(s)
- Jyothi J Alvares
- Microbiology Programme, School of Biological Sciences and Biotechnology, Goa University, Taleigao, Goa, India
| | - Sanket K Gaonkar
- Microbiology Programme, School of Biological Sciences and Biotechnology, Goa University, Taleigao, Goa, India
- Department of Microbiology, P.E.S's R.S.N College of Arts and Science, Farmagudi, Ponda-Goa, India
| | - Chandan C Naik
- Department of Chemistry, Dhempe College of Arts & Science, Panaji, Goa, India
| | - Pratik Asogekar
- School of Chemical Sciences, Goa University, Taleigao, Goa, India
- Department of Chemistry, P.E.S's R.S.N College of Arts and Science, Farmagudi, Ponda-Goa, India
| | - Irene J Furtado
- Microbiology Programme, School of Biological Sciences and Biotechnology, Goa University, Taleigao, Goa, India
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Barabadi H, Mobaraki K, Jounaki K, Sadeghian-Abadi S, Vahidi H, Jahani R, Noqani H, Hosseini O, Ashouri F, Amidi S. Exploring the biological application of Penicillium fimorum-derived silver nanoparticles: In vitro physicochemical, antifungal, biofilm inhibitory, antioxidant, anticoagulant, and thrombolytic performance. Heliyon 2023; 9:e16853. [PMID: 37313153 PMCID: PMC10258451 DOI: 10.1016/j.heliyon.2023.e16853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Revised: 05/28/2023] [Accepted: 05/31/2023] [Indexed: 06/15/2023] Open
Abstract
This study showed the anti-candida, biofilm inhibitory, antioxidant, anticoagulant, and thrombolytic properties of biogenic silver nanoparticles (AgNPs) fabricated by using the supernatant of Penicillium fimorum (GenBank accession number OQ568180) isolated from soil. The biogenic AgNPs were characterized by using different analytical techniques. A sharp surface plasmon resonance (SPR) peak of the colloidal AgNPs at 429.5 nm in the UV-vis spectrum confirmed the fabrication of nanosized silver particles. The broth microdilution assay confirmed the anti-candida properties of AgNPs with a minimum inhibitory concentration (MIC) of 4 μg mL-1. In the next step, the protein and DNA leakage assays as well as reactive oxygen species (ROS) assay were performed to evaluate the possible anti-candida mechanisms of AgNPs representing an increase in the total protein and DNA of supernatant along with a climb-up in ROS levels in AgNPs-treated samples. Flow cytometry also confirmed a dose-dependent cell death in the AgNPs-treated samples. Further studies also confirmed the biofilm inhibitory performance of AgNPs against Candia albicans. The AgNPs at the concentrations of MIC and 4*MIC inhibited 79.68 ± 14.38% and 83.57 ± 3.41% of biofilm formation in C. albicans, respectively. Moreover, this study showed that the intrinsic pathway may play a significant role in the anticoagulant properties of AgNPs. In addition, the AgNPs at the concentration of 500 μg mL-1, represented 49.27%, and 73.96 ± 2.59% thrombolytic and DPPH radical scavenging potential, respectively. Promising biological performance of AgNPs suggests these nanomaterials as a good candidate for biomedical and pharmaceutical applications.
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Affiliation(s)
- Hamed Barabadi
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Kiana Mobaraki
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Kamyar Jounaki
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Salar Sadeghian-Abadi
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hossein Vahidi
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Reza Jahani
- Department of Toxicology and Pharmacology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hesam Noqani
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Omid Hosseini
- Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Fatemeh Ashouri
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Salimeh Amidi
- Department of Medicinal Chemistry, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Abd El-Ghany MN, Hamdi SA, Korany SM, Elbaz RM, Emam AN, Farahat MG. Biogenic Silver Nanoparticles Produced by Soil Rare Actinomycetes and Their Significant Effect on Aspergillus-derived mycotoxins. Microorganisms 2023; 11:microorganisms11041006. [PMID: 37110430 PMCID: PMC10142716 DOI: 10.3390/microorganisms11041006] [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: 03/04/2023] [Revised: 04/09/2023] [Accepted: 04/11/2023] [Indexed: 04/29/2023] Open
Abstract
The current investigation addressed the green synthesis of silver nanoparticles (AgNPs) using newly isolated silver-resistant rare actinomycetes, Glutamicibacter nicotianae SNPRA1 and Leucobacter aridicollis SNPRA2, and investigated their impact on the mycotoxigenic fungi Aspergillus flavus ATCC 11498 and Aspergillus ochraceus ATCC 60532. The formation of AgNPs was evidenced by the reaction's color change to brownish and the appearance of the characteristic surface plasmon resonance. The transmission electron microscopy of biogenic AgNPs produced by G. nicotianae SNPRA1 and L. aridicollis SNPRA2 (designated Gn-AgNPs and La-AgNPs, respectively) revealed the generation of monodispersed spherical nanoparticles with average sizes of 8.48 ± 1.72 nm and 9.67 ± 2.64 nm, respectively. Furthermore, the XRD patterns reflected their crystallinity and the FTIR spectra demonstrated the presence of proteins as capping agents. Both bioinspired AgNPs exhibited a remarkable inhibitory effect on the conidial germination of the investigated mycotoxigenic fungi. The bioinspired AgNPs caused an increase in DNA and protein leakage, suggesting the disruption of membrane permeability and integrity. Interestingly, the biogenic AgNPs completely inhibited the production of total aflatoxins and ochratoxin A at concentrations less than 8 μg/mL. At the same time, cytotoxicity investigations revealed the low toxicity of the biogenic AgNPs against the human skin fibroblast (HSF) cell line. Both biogenic AgNPs exhibited feasible biocompatibility with HSF cells at concentrations up to 10 μg/mL and their IC50 values were 31.78 and 25.83 μg/mL for Gn-AgNPs and La-AgNPs, respectively. The present work sheds light on the antifungal prospect of the biogenic AgNPs produced by rare actinomycetes against mycotoxigenic fungi as promising candidates to combat mycotoxin formation in food chains at nontoxic doses.
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Affiliation(s)
- Mohamed N Abd El-Ghany
- Botany and Microbiology Department, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Salwa A Hamdi
- Zoology Department, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Shereen M Korany
- Botany and Microbiology Department, Faculty of Science, Helwan University, Cairo 11795, Egypt
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Reham M Elbaz
- Botany and Microbiology Department, Faculty of Science, Helwan University, Cairo 11795, Egypt
- Department of Biology, Faculty of Science, University of Bisha, P.O. Box 551, Bisha 61922, Saudi Arabia
| | - Ahmed N Emam
- Refractories, Ceramics and Building Materials Department, Advanced Materials Technology & Mineral Resources Research Institute, National Research Centre (NRC), El Bohouth St., Dokki, Cairo 12622, Egypt
- Nanomedicine & Tissue Engineering Research Lab, Medical Research Centre of Excellence, National Research Centre, El Bohouth St., Dokki, Cairo 12622, Egypt
| | - Mohamed G Farahat
- Botany and Microbiology Department, Faculty of Science, Cairo University, Giza 12613, Egypt
- Biotechnology Department, Faculty of Nanotechnology for Postgraduate Studies, Cairo University, Sheikh Zayed Branch Campus, Giza 12588, Egypt
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Moopantakath J, Imchen M, Anju VT, Busi S, Dyavaiah M, Martínez-Espinosa RM, Kumavath R. Bioactive molecules from haloarchaea: Scope and prospects for industrial and therapeutic applications. Front Microbiol 2023; 14:1113540. [PMID: 37065149 PMCID: PMC10102575 DOI: 10.3389/fmicb.2023.1113540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 03/14/2023] [Indexed: 04/03/2023] Open
Abstract
Marine environments and salty inland ecosystems encompass various environmental conditions, such as extremes of temperature, salinity, pH, pressure, altitude, dry conditions, and nutrient scarcity. The extremely halophilic archaea (also called haloarchaea) are a group of microorganisms requiring high salt concentrations (2–6 M NaCl) for optimal growth. Haloarchaea have different metabolic adaptations to withstand these extreme conditions. Among the adaptations, several vesicles, granules, primary and secondary metabolites are produced that are highly significant in biotechnology, such as carotenoids, halocins, enzymes, and granules of polyhydroxyalkanoates (PHAs). Among halophilic enzymes, reductases play a significant role in the textile industry and the degradation of hydrocarbon compounds. Enzymes like dehydrogenases, glycosyl hydrolases, lipases, esterases, and proteases can also be used in several industrial procedures. More recently, several studies stated that carotenoids, gas vacuoles, and liposomes produced by haloarchaea have specific applications in medicine and pharmacy. Additionally, the production of biodegradable and biocompatible polymers by haloarchaea to store carbon makes them potent candidates to be used as cell factories in the industrial production of bioplastics. Furthermore, some haloarchaeal species can synthesize nanoparticles during heavy metal detoxification, thus shedding light on a new approach to producing nanoparticles on a large scale. Recent studies also highlight that exopolysaccharides from haloarchaea can bind the SARS-CoV-2 spike protein. This review explores the potential of haloarchaea in the industry and biotechnology as cellular factories to upscale the production of diverse bioactive compounds.
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Affiliation(s)
- Jamseel Moopantakath
- Department of Genomic Science, School of Biological Sciences, Central University of Kerala, Kerala, India
| | - Madangchanok Imchen
- Department of Microbiology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - V. T. Anju
- Department of Biochemistry and Molecular Biology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - Siddhardha Busi
- Department of Microbiology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - Madhu Dyavaiah
- Department of Biochemistry and Molecular Biology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - Rosa María Martínez-Espinosa
- Biochemistry, Molecular Biology, Edaphology and Agricultural Chemistry Department, Faculty of Sciences, University of Alicante, Alicante, Spain
- Multidisciplinary Institute for Environmental Studies “Ramón Margalef”, University of Alicante, Alicante, Spain
- Rosa María Martínez-Espinosa,
| | - Ranjith Kumavath
- Department of Genomic Science, School of Biological Sciences, Central University of Kerala, Kerala, India
- Department of Biotechnology, School of Life Sciences, Pondicherry University, Puducherry, India
- *Correspondence: Ranjith Kumavath, ,
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Akintelu SA, Olabemiwo OM, Ibrahim AO, Oyebamiji JO, Oyebamiji AK, Olugbeko SC. Biosynthesized nanoparticles as a rescue aid for agricultural sustainability and development. INTERNATIONAL NANO LETTERS 2022. [DOI: 10.1007/s40089-022-00382-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Moopantakath J, Imchen M, Sreevalsan A, Siddhardha B, Martínez-Espinosa RM, Kumavath R. Biosynthesis of Silver Chloride Nanoparticles (AgCl-NPs) from Extreme Halophiles and Evaluation of Their Biological Applications. Curr Microbiol 2022; 79:266. [PMID: 35881211 DOI: 10.1007/s00284-022-02970-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 07/07/2022] [Indexed: 11/03/2022]
Abstract
The biosynthesis of nanoparticles (NPs) has gained an overwhelming interest due to their biological applications. However, NPs synthesis by pigmented extreme halophiles remains underexplored. The NPs synthesis using pigmented halophiles is inexpensive and less toxic than other processes. In this study, pigmented halophilic microorganisms (n = 77) were screened to synthesize silver chloride nanoparticles (AgCl-NPs) with silver nitrate as metal precursors, and their biological applications were assessed. The synthesis of AgCl-NPs was possible using the crude extract from cellular lysis (CECL) of six extreme halophiles. Two of the AgCl-NPs viz. AK2-NPs and MY6-NPs synthesized by the CECL of Haloferax alexandrinus RK_AK2 and Haloferax lucentense RK_MY6, respectively, exhibited antimicrobial, antioxidative, and anti-inflammatory activities. The surface plasmon resonance of the AgCl-NPs was determined with UV spectroscopy. XRD analysis of AK2-NPs and MY6-NPs confirmed the presence of silver in the form of chlorargyrite (silver chloride) having a cubic structure. The crystallite size of AK2-NPs and MY6-NPs, estimated with the Scherrer formula, was 115.81 nm and 137.50 nm. FTIR analysis verified the presence of diverse functional groups. Dynamic light-scattering analysis confirmed that the average size distribution of NPs was 71.02 nm and 117.36 nm for AK2-NPs and MY6-NPs, respectively, with monodisperse nature. The functional group in 1623-1641 cm-1 indicated the presence of protein β-sheet structure and shifting of amino and hydroxyl groups from the pigmented CECL, which helps in capping and stabilizing nanoparticles. The study provides evidence that CECL of Haloferax species can rapidly synthesize NPs with unique characteristics and biological applications.
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Affiliation(s)
- Jamseel Moopantakath
- Department of Genomic Science, School of Biological Sciences, Central University of Kerala, Tejaswini Hills, Periya (PO), Kasaragod, Kerala, 671320, India
| | - Madangchanok Imchen
- Department of Genomic Science, School of Biological Sciences, Central University of Kerala, Tejaswini Hills, Periya (PO), Kasaragod, Kerala, 671320, India.,Department of Microbiology, School of Life Sciences, Pondicherry University, Puducherry, 605014, India
| | - Aathira Sreevalsan
- Department of Genomic Science, School of Biological Sciences, Central University of Kerala, Tejaswini Hills, Periya (PO), Kasaragod, Kerala, 671320, India
| | - Busi Siddhardha
- Department of Microbiology, School of Life Sciences, Pondicherry University, Puducherry, 605014, India
| | - Rosa María Martínez-Espinosa
- Biochemistry and Molecular Biology Division, Agrochemistry and Biochemistry Department, Faculty of Sciences, University of Alicante, Ap. 99, 03080, Alicante, Spain.,Multidisciplinary Institute for Environmental Studies "Ramón Margalef" University of Alicante, Ap. 99, 03080, Alicante, Spain
| | - Ranjith Kumavath
- Department of Genomic Science, School of Biological Sciences, Central University of Kerala, Tejaswini Hills, Periya (PO), Kasaragod, Kerala, 671320, India.
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Luna-Vázquez-Gómez R, Arellano-García ME, Toledano-Magaña Y, García-Ramos JC, Radilla-Chávez P, Salas-Vargas DS, Casillas-Figueroa F, Ruiz-Ruiz B, Pestryakov A, Bogdanchikova N. Bell Shape Curves of Hemolysis Induced by Silver Nanoparticles: Review and Experimental Assay. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:1066. [PMID: 35407184 PMCID: PMC9000491 DOI: 10.3390/nano12071066] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/20/2022] [Accepted: 03/21/2022] [Indexed: 02/06/2023]
Abstract
The hemolytic activity assay is a versatile tool for fast primary toxicity studies. This work presents a systematic study of the hemolytic properties of ArgovitTM silver nanoparticles (AgNPs) extensively studied for biomedical applications. The results revealed an unusual and unexpected bell-shaped hemolysis curve for human healthy and diabetic donor erythrocytes. With the decrease of pH from 7.4 and 6.8 to 5.6, the hemolysis profiles for AgNPs and AgNO3 changed dramatically. For AgNPs, the bell shape changed to a step shape with a subsequent sharp increase, and for AgNO3 it changed to a gradual increase. Explanations of these changes based on the aggregation of AgNPs due to the increase of proton concentration were suggested. Hemolysis of diabetic donor erythrocytes was slightly higher than that of healthy donor erythrocytes. The meta-analysis revealed that for only one AgNPs formulation (out of 48), a bell-shaped hemolysis profile was reported, but not discussed. This scarcity of data was explained by the dominant goal of studies consisting in achieving clinically significant hemolysis of 5-10%. Considering that hemolysis profiles may be bell-shaped, it is recommended to avoid extrapolations and to perform measurements in a wide concentration interval in hemolysis assays.
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Affiliation(s)
- Roberto Luna-Vázquez-Gómez
- Escuela de Ciencias de la Salud, Campus Ensenada, Universidad Autónoma de Baja California (UABC), Mexicali 21100, Mexico; (R.L.-V.-G.); (Y.T.-M.); (J.C.G.-R.); (D.S.S.-V.); (F.C.-F.); (B.R.-R.)
| | | | - Yanis Toledano-Magaña
- Escuela de Ciencias de la Salud, Campus Ensenada, Universidad Autónoma de Baja California (UABC), Mexicali 21100, Mexico; (R.L.-V.-G.); (Y.T.-M.); (J.C.G.-R.); (D.S.S.-V.); (F.C.-F.); (B.R.-R.)
| | - Juan Carlos García-Ramos
- Escuela de Ciencias de la Salud, Campus Ensenada, Universidad Autónoma de Baja California (UABC), Mexicali 21100, Mexico; (R.L.-V.-G.); (Y.T.-M.); (J.C.G.-R.); (D.S.S.-V.); (F.C.-F.); (B.R.-R.)
| | - Patricia Radilla-Chávez
- Escuela de Ciencias de la Salud, Campus Ensenada, Universidad Autónoma de Baja California (UABC), Mexicali 21100, Mexico; (R.L.-V.-G.); (Y.T.-M.); (J.C.G.-R.); (D.S.S.-V.); (F.C.-F.); (B.R.-R.)
| | - David Sergio Salas-Vargas
- Escuela de Ciencias de la Salud, Campus Ensenada, Universidad Autónoma de Baja California (UABC), Mexicali 21100, Mexico; (R.L.-V.-G.); (Y.T.-M.); (J.C.G.-R.); (D.S.S.-V.); (F.C.-F.); (B.R.-R.)
| | - Francisco Casillas-Figueroa
- Escuela de Ciencias de la Salud, Campus Ensenada, Universidad Autónoma de Baja California (UABC), Mexicali 21100, Mexico; (R.L.-V.-G.); (Y.T.-M.); (J.C.G.-R.); (D.S.S.-V.); (F.C.-F.); (B.R.-R.)
| | - Balam Ruiz-Ruiz
- Escuela de Ciencias de la Salud, Campus Ensenada, Universidad Autónoma de Baja California (UABC), Mexicali 21100, Mexico; (R.L.-V.-G.); (Y.T.-M.); (J.C.G.-R.); (D.S.S.-V.); (F.C.-F.); (B.R.-R.)
| | - Alexey Pestryakov
- Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Nina Bogdanchikova
- Nanoscience and Nanotechnology Center (CNyN), Campus Ensenada, National Autonomous University of Mexico (UNAM), Mexico City 04510, Mexico;
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Alavi M. Bacteria and fungi as major bio-sources to fabricate silver nanoparticles with antibacterial activities. Expert Rev Anti Infect Ther 2022; 20:897-906. [DOI: 10.1080/14787210.2022.2045194] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Mehran Alavi
- Nanobiotechnology Laboratory, Department of Biology, Razi University, Kermanshah, Iran
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Bera A, Mukhopadhyay D, Goswami K, Ghosh P, De R, De P. Fatty Acid-Based Polymeric Micelles to Ameliorate Amyloidogenic Disorders. Biomater Sci 2022; 10:3466-3479. [PMID: 35670569 DOI: 10.1039/d2bm00359g] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
To develop anti-amyloidogenic inhibitors for ameliorating the treatment of diabetes, herein, we have synthesized amphiphilic block copolymers with side-chain fatty acid (FA) moieties via reversible addition fragmentation chain-transfer (RAFT) polymerization....
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Affiliation(s)
- Avisek Bera
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur - 741246, Nadia, West Bengal, India.
| | - Debangana Mukhopadhyay
- Department of Physical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur - 741246, Nadia, West Bengal, India.
| | - Kalyan Goswami
- Department of Biochemistry, All India Institute of Medical Sciences (AIIMS), Kalyani, Basantapur, NH-34 connector, Kalyani - 741245, Nadia, West Bengal, India
| | - Pooja Ghosh
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur - 741246, Nadia, West Bengal, India.
| | - Rumi De
- Department of Physical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur - 741246, Nadia, West Bengal, India.
| | - Priyadarsi De
- Polymer Research Centre and Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur - 741246, Nadia, West Bengal, India.
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Melkamu WW, Bitew LT. Green synthesis of silver nanoparticles using Hagenia abyssinica (Bruce) J.F. Gmel plant leaf extract and their antibacterial and anti-oxidant activities. Heliyon 2021; 7:e08459. [PMID: 34901505 PMCID: PMC8642611 DOI: 10.1016/j.heliyon.2021.e08459] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 10/13/2021] [Accepted: 11/18/2021] [Indexed: 11/30/2022] Open
Abstract
Green synthesis of silver nanoparticles (AgNPs) was achieved by bio-reduction of silver nitrate using Hagenia Abyssinica plant leaf extract (HAPLE). The AgNPs formation was confirmed by Ultraviolet-Visible (UV-Vis) spectrophotometer. The synthesized AgNPs in solution have shown maximum absorption at 430 nm. The different parameters like temperature, pH, time, silver nitrate concentration and volume of leaf extract were optimized spectrophotometrically. The Fourier-Transform Infrared (FTIR) Spectroscopy was used to confirm the existence of various functional groups responsible for reducing and stabilizing during the biosynthesis process. The X-Ray Diffraction (XRD) analysis confirmed the structure, crystal size and nature of the AgNPs. The synthesized AgNPs showed antimicrobial (gram-negative bacteria (klebsiella pneumoniae and salmonella typhimurium) and gram-positive bacteria (Streptococcus pneumoniae)) and antioxidant (2,2-diphenyl-1-picryl-hydrazyl (DPPH) radical scavenging method) activities. The developed method for the AgNPs synthesis using HAPLE is an eco-friendly and convenient method. In near future, the synthesized AgNPs could be used in the fields of water treatment, biomedicine, biosensor and nanotechnology.
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Affiliation(s)
- Walelign Wubet Melkamu
- Department of Chemistry, College of Natural & Computational Sciences, University of Gondar, Ethiopia
| | - Legesse Terefe Bitew
- Department of Chemistry, College of Natural & Computational Sciences, University of Gondar, Ethiopia
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Qiu Y, Sun X, Lin X, Yi W, Jiang J. An injectable metal nanoparticle containing cellulose derivative-based hydrogels: Evaluation of antibacterial and in vitro-vivo wound healing activity in children with burn injuries. Int Wound J 2021; 19:666-678. [PMID: 34472709 PMCID: PMC8874106 DOI: 10.1111/iwj.13664] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 07/14/2021] [Accepted: 07/25/2021] [Indexed: 01/07/2023] Open
Abstract
The preparation of hydrogels for wound healing properties with high antibacterial activities and good biosafety concurrently can be relatively challenging. For addressing these issues, we report on the synthesis and characterisation of a nanocomposite hydrogel dressing by introducing the silver nanoparticles in hydroxypropyl methylcellulose-hydroxyapatite scaffold hydrogel (HMC-HA/AgNPs). The different concentrations of AgNPs in HMC-HA/AgNPs hydrogels were confirmed by swelling ratio, degradation, and gelatin time. The synthesised HMC-HA/AgNPs hydrogels were further characterised using the UV-visible, scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectrum, and X-ray diffraction. The results showed that the novel HMC-HA/AgNPs hydrogel exhibited a porous 3D network and high mechanical properties because of the inter-molecular and intra-molecular interactions. The AgNPs give the HMC-HA hydrogels excellent antibacterial activities against both Staphylococcus aureus and Escherichia coli, without any chemical reductant and cross-linking agent required endows the hydrogel high biocompatibility. More importantly, HMC-HA/AgNPs effectively repaired wound defects in mice models, and wound healing reached 94.5 ± 1.4% within 16 days. The HMC-HA hydrogel with AgNPs showed excellent antimicrobial activity and burn wound healing. Therefore, these HMC-HA/AgNPs hydrogels have great potential as an injectable hydrogel for wound healing activity in children with burn injuries.
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Affiliation(s)
- Yuming Qiu
- Department of Ophthalmology, Yantai Yantaishan Hospital, Yantai, China
| | - Xiuxiang Sun
- Department of Respiratory Medicine, Yantai Qishan Hospital, Yantai, China
| | - Xiaoli Lin
- Department of Acupuncture, massage and rehabilitation, Penglai Traditional Chinese Medicine Hospital, Penglai, China
| | - Wenying Yi
- Department of General Surgery, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Jianye Jiang
- Department of Pediatrics, Chengyang District People's Hospital of Qingdao, Qingdao, China
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