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Salama WH, Abd-Rabou AA, Bassuiny RI, El Hakim AE, Shahein YE. Exploration of antimicrobial and anticancer activities of L-amino acid oxidase from Egyptian Naja haje venom. Toxicon 2024; 242:107708. [PMID: 38574827 DOI: 10.1016/j.toxicon.2024.107708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 02/12/2024] [Accepted: 04/02/2024] [Indexed: 04/06/2024]
Abstract
Hepatocellular carcinoma and bacterial resistance are major health burdens nowadays. Thus, providing new therapies that overcome that resistance is of great interest, particularly those derived from nature rather than chemotherapeutics to avoid cytotoxicity on normal cells. Venomous animals are among the natural sources that assisted in the discovery of novel therapeutic regimens. L-amino acid oxidase Nh-LAAO (140 kDa), purified from Egyptian Naja haje venom by a successive two-step chromatography protocol, has an optimal pH and temperature of 8 and 37 °C. Under standard assay conditions, Nh-LAAO exhibited the highest specificity toward L-Arg, L-Met and L-Leu, with Km and Vmax values of 3.5 mM and 10.4 μmol/min/ml, respectively. Among the metal ions, Ca+2, Na+, and K+ ions are activators, whereas Fe+2 inhibited LAAO activity. PMSF and EDTA slightly inhibited the Nh-LAAO activity. In addition, Nh-LAAO showed antibacterial and antifungal activities, particularly against Gentamicin-resistant P. aeruginosa and E. coli strains with MIC of 18 ± 2 μg/ml, as well as F. proliferatum and A. parasiticus among the selected human pathogenic strains. Furthermore, Nh-LAAO exhibited anti-proliferative activity against cancer HepG2 and Huh7 cells with IC50 of 79.37 and 60.11 μg/ml, respectively, with no detectable effect on normal WI-38 cells. Consequently, the apoptosis % of the HepG2 and Huh7 cells were 12 ± 1 and 34.5 ± 2.5 %, respectively, upon Nh-LAAO treatment. Further, the Nh-LAAO arrested the HepG2 and Huh7 cell cycles in the G0/G1 phase. Thus, the powerful selective cytotoxicity of L-amino acid oxidase opens up the possibility as a good candidate for clinical cancer therapy.
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Affiliation(s)
- Walaa H Salama
- Molecular Biology Department, National Research Centre, 12622, Dokki, Cairo, Egypt.
| | - Ahmed A Abd-Rabou
- HormonesDepartment, National Research Centre, 12622, Dokki, Cairo, Egypt
| | - Roqaya I Bassuiny
- Molecular Biology Department, National Research Centre, 12622, Dokki, Cairo, Egypt
| | - Amr E El Hakim
- Molecular Biology Department, National Research Centre, 12622, Dokki, Cairo, Egypt
| | - Yasser E Shahein
- Molecular Biology Department, National Research Centre, 12622, Dokki, Cairo, Egypt
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2
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Brindhadevi K, Subramanian SA, Kim PT, Wadaan MA, Selvam DR, Kim SJ. Antimicrobial and anti-diabetic efficiency of Polyalthia longifolia leaf extracts and major compounds characterization. Environ Res 2024; 246:118061. [PMID: 38157967 DOI: 10.1016/j.envres.2023.118061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 12/21/2023] [Accepted: 12/26/2023] [Indexed: 01/03/2024]
Abstract
This research was performed to investigate the bactericidal and fungicidal competence of extracts (methanol and petroleum ether extract) of Polyalthia longifolia leaf. Moreover, the major active compounds present in the effective crude extract (either methanol or petroleum ether extract) was determined through initially with UV-Vis spectra, FTIR, and GC-MS analyses. The methanol extract alone showed remarkable bactericidal and fungicidal activity against the bacterial (S. pyogenes > E. coli > S. aureus > S. pneumoniae > C. difficile > P. aeruginosa) and fungal (A. clavatus > C. albicans > A. niger > A. fumigatus > C. tropicalis > C. auris) pathogens at increased concentration (12.5 mg mL-1) than petroleum ether extract. The MIC and MBC values of methanol extract were found as 10-20 mg mL-1 and 30-40 mg mL-1 respectively. The MFC value of methanol extract was found as 10-20 mg mL-1. These MIC, MBC, and MFC values of methanol extract were considerably greater than petroleum ether extract. The FTIR and GC-MS characterization studies revealed that the presence of more acre functional groups belonging to bioactive compounds such as Z)-7-Hexadecenal, Aromandendrene, α-Curcumene, Caryophyllene, Methyl 14-methyl Pentadecanoat, Methyl trans-13-Octadecenoate, 9-Octadecenoic acid (Z)-, and 2-hydroxy-1- (hydroxymethyl)ethyl. As a result of these findings, it is possible that P. longifolia leaf methanol extract contains medicinally important bioactive substances with bactericidal and fungicidal properties.
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Affiliation(s)
- Kathirvel Brindhadevi
- Institute of Research and Development, Duy Tan University, Da Nang, Viet Nam; School of Engineering & Technology, Duy Tan University, Da Nang, Viet Nam.
| | - Sivakumar Allur Subramanian
- Department of Orthopaedic Surgery, Dongtan Sacred Heart Hospital, Hallym University, College of Medicine, Hwaseong, Republic of Korea
| | - P T Kim
- Institute of Research and Development, Duy Tan University, Da Nang, Viet Nam; School of Engineering & Technology, Duy Tan University, Da Nang, Viet Nam
| | - Mohammad Ahmad Wadaan
- Department of Zoology, College of Science, King Saud University, Riyadh, P.O. Box. 2455, 11451, Saudi Arabia
| | - D Robert Selvam
- Department of Advanced Zoology and Biotechnology, Loyola Health Centre, Loyola College (Autonomous), Chennai, 600 034, Tamil Nadu, India.
| | - Sung Jae Kim
- Department of Orthopaedic Surgery, Dongtan Sacred Heart Hospital, Hallym University, College of Medicine, Hwaseong, Republic of Korea.
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Barreto Bellusci H, Gervasoni LF, Peixoto IC, De Oliveira LB, de Oliveira Vieira KC, Toledo ACCG, de Oliveira CBS, Mareco EA, Naga RM, Cataneli VP, Nai GA, Winkelströter LK. Local anesthetics as a tool for Staphylococcus spp. control: a systematic review. Braz J Microbiol 2024:10.1007/s42770-024-01285-2. [PMID: 38386261 DOI: 10.1007/s42770-024-01285-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 02/09/2024] [Indexed: 02/23/2024] Open
Abstract
The objective of this work was to carry out a systematic review on the effectiveness of local anesthetics as antimicrobial agents against Staphylococcus spp. Searches were performed in the PubMed, Web of science, Scopus, Embase and Lilacs databases. As inclusion criteria, complete original articles, with in vitro experimental tests with the application of selected anesthetics and bacteria of the genus Staphylococcus spp. This review followed the methodological checklist for writing papers reporting systematic reviews by the PRISMA statement. The risk of bias was assessed according to the JBI critical appraisal checklist. Analysis was performed using an anesthetic-moderated simple linear regression model. This systematic review was registered by the Open Science Framework-OSF ( https://doi.org/10.17605/OSF.IO/C5JM7 ). Initially, 1141 articles were found, of which, after careful selection, 52 articles were analyzed. Lidocaine was the most commonly used anesthetic, being evaluated in 35 of the articles. S. aureus ATCC 25923 was the standard microorganism in 17 articles. The impact of the anesthetic concentration in relation to the antimicrobial effect was evaluated and the results showed that there was no statistically significant difference. (F [5, 12] = 0.688 p = 0.642), even when taking into account the moderator effect of anesthetics individually. Therefore, although the antimicrobial effect of local anesthetics was demonstrated in 82.7% of the studies evaluated, great heterogeneity of the results was found, which made it impossible to carry out a meta-analysis and make recommendations based on the evidence.
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Affiliation(s)
- Henrique Barreto Bellusci
- Mestrado Em Ciências da Saúde, Universidade Do Oeste Paulista/UNOESTE, Presidente Prudente, SP, Brasil
| | - Letícia Franco Gervasoni
- Faculdade de Ciências da Saúde, Universidade Do Oeste Paulista/UNOESTE, Rua José Bongiovani, 700, Cidade Universitária, Presidente Prudente, SP, Brasil
| | - Inaiá Calegari Peixoto
- Faculdade de Ciências da Saúde, Universidade Do Oeste Paulista/UNOESTE, Rua José Bongiovani, 700, Cidade Universitária, Presidente Prudente, SP, Brasil
| | - Lívia Batista De Oliveira
- Faculdade de Ciências da Saúde, Universidade Do Oeste Paulista/UNOESTE, Rua José Bongiovani, 700, Cidade Universitária, Presidente Prudente, SP, Brasil
| | | | - Ana Clara Campagnolo Goncalves Toledo
- Mestrado Em Ciências da Saúde, Universidade Do Oeste Paulista/UNOESTE, Presidente Prudente, SP, Brasil
- Faculdade de Ciências da Saúde, Universidade Do Oeste Paulista/UNOESTE, Rua José Bongiovani, 700, Cidade Universitária, Presidente Prudente, SP, Brasil
| | - Crystian Bitencourt Soares de Oliveira
- Mestrado Em Ciências da Saúde, Universidade Do Oeste Paulista/UNOESTE, Presidente Prudente, SP, Brasil
- Faculdade de Ciências da Saúde, Universidade Do Oeste Paulista/UNOESTE, Rua José Bongiovani, 700, Cidade Universitária, Presidente Prudente, SP, Brasil
| | - Edson Assunção Mareco
- Programa de Pós-Graduação Em Meio Ambiente E Desenvolvimento Regional, Universidade Do Oeste Paulista/UNOESTE, Presidente Prudente, SP, Brasil
| | - Raju Maddela Naga
- Facultad de Ciencias de La Salud, Universidad Técnica de Manabí, Portoviejo, Ecuador
| | - Valeria Pereira Cataneli
- Mestrado Em Ciências da Saúde, Universidade Do Oeste Paulista/UNOESTE, Presidente Prudente, SP, Brasil
- Faculdade de Ciências da Saúde, Universidade Do Oeste Paulista/UNOESTE, Rua José Bongiovani, 700, Cidade Universitária, Presidente Prudente, SP, Brasil
| | - Gisele Alborgheti Nai
- Mestrado Em Ciências da Saúde, Universidade Do Oeste Paulista/UNOESTE, Presidente Prudente, SP, Brasil
- Faculdade de Ciências da Saúde, Universidade Do Oeste Paulista/UNOESTE, Rua José Bongiovani, 700, Cidade Universitária, Presidente Prudente, SP, Brasil
- Programa de Pós-Graduação Em Ciência Animal, Universidade Do Oeste Paulista/UNOESTE, Presidente Prudente, SP, Brasil
| | - Lizziane Kretli Winkelströter
- Mestrado Em Ciências da Saúde, Universidade Do Oeste Paulista/UNOESTE, Presidente Prudente, SP, Brasil.
- Faculdade de Ciências da Saúde, Universidade Do Oeste Paulista/UNOESTE, Rua José Bongiovani, 700, Cidade Universitária, Presidente Prudente, SP, Brasil.
- Programa de Pós-Graduação Em Ciência Animal, Universidade Do Oeste Paulista/UNOESTE, Presidente Prudente, SP, Brasil.
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Mostafa WA, Elshanawany SA, Otaif KD, Khalifa M, Elgazzar E. The high impact of zinc chromium oxide nanocombs on development of larvicidal and antimicrobial performance. BMC Chem 2024; 18:11. [PMID: 38216997 PMCID: PMC10787509 DOI: 10.1186/s13065-023-01108-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Accepted: 12/21/2023] [Indexed: 01/14/2024] Open
Abstract
Zinc chromium oxide (Cr/ZnO, 5wt.%) was prepared by a facile chemical co-precipitation route. The structure, composition, and chemical bonding were analyzed using X-ray diffraction (XRD), Energy dispersive X-ray spectroscopy (EDX), and Fourier-transform infrared spectroscopy (FTIR) indicating that chromium ions were integrated the host framework to form Cr/ZnO nanocomposite. Scanning electron microscopy (SEM) and Transmission electron microscopy (TEM) micrographs showed comb-shaped nanoparticles with an average size 20 nm and large surface area. The energy gap of the thin films was estimated from T% and R% measurements which exhibit a strong optical absorption edge close to the visible spectrum. The insecticidal activity of the synthesized nanocombs against C. pipiens larvae was evaluated with LC50 (30.15 ppm) and LC90 (100.22 ppm). Besides, the nanocomposite showed high antibacterial performance against gram-positive bacteria (Bacillus subtilis) and gram-negative bacteria (Proteus vulgaris) with inhibition zones 21.9 and 19 mm, respectively.
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Affiliation(s)
- Wageha A Mostafa
- Entomolgy Section, Zoology Department, Faculty of Science, Zagazig University, Zagazig, Egypt
| | | | - Khadejah D Otaif
- Department of Chemistry, Samtah University College, Jazan University, 86736, Jazan, Saudi Arabia
| | - Mona Khalifa
- Biochemistry department, Faculty of Science, Cairo University, Cairo, Egypt
| | - Elsayed Elgazzar
- Department of Physics, Faculty of Science, Suez Canal University, Ismailia, 41522, Egypt.
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Kahandal A, Chaudhary S, Methe S, Nagwade P, Sivaram A, Tagad CK. Galactomannan polysaccharide as a biotemplate for the synthesis of zinc oxide nanoparticles with photocatalytic, antimicrobial and anticancer applications. Int J Biol Macromol 2023; 253:126787. [PMID: 37690639 DOI: 10.1016/j.ijbiomac.2023.126787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 09/05/2023] [Accepted: 09/05/2023] [Indexed: 09/12/2023]
Abstract
Biotemplates provide a facile, rapid, and environmentally benign route for synthesizing various nanostructured materials. Herein, Locust Bean Gum (LBG), a galactomannan polysaccharide, has been used as a biotemplate for synthesizing ZnO nanoparticles (NPs) for the first time. The composition, structure, morphology, and bandgap of ZnO were investigated by Energy Dispersive X-ray Spectroscopy (EDX), X-Ray Photoelectron Spectroscopy (XPS), X-ray powder diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and UV-vis spectroscopy. XRD data showed single-phase crystalline hexagonal NPs. FTIR spectra confirmed the presence of M-O bonding in the sample. At a concentration of 0.5 mg/mL the NPs can degrade Rhodamine B under sunlight, displaying excellent photocatalytic activity. These NPs exhibited antimicrobial activity in both Staphylococcus aureus and Bacillus subtilis. Significant cell death was observed at 500 μg/mL, 250 μg/mL, 125 μg/mL and 62.5 μg/mL of NP in breast cancer, ovarian cancer and lung cancer cell lines. Wound healing assay showed that the NPs significantly blocked the cell migration at a concentration as low as 62.5 μg/mL in all three cell lines. Further optimization of the nanostructure properties will make it a promising candidate in the field of nano-biotechnology and bioengineering owing to its wide range of potential applications.
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Affiliation(s)
- Amol Kahandal
- MIT School of Bioengineering Sciences & Research, MIT Art, Design and Technology University, Pune, India
| | - Sanyukta Chaudhary
- MIT School of Bioengineering Sciences & Research, MIT Art, Design and Technology University, Pune, India
| | - Saakshi Methe
- MIT School of Bioengineering Sciences & Research, MIT Art, Design and Technology University, Pune, India
| | - Pratik Nagwade
- Department of Chemistry, Shri Anand College, Pathardi, Ahmednagar, MH, India
| | - Aruna Sivaram
- MIT School of Bioengineering Sciences & Research, MIT Art, Design and Technology University, Pune, India.
| | - Chandrakant K Tagad
- MIT School of Bioengineering Sciences & Research, MIT Art, Design and Technology University, Pune, India.
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Shin JH, Jeong SB, Kim IH, Lee SY, Hwang GB, Park I, Heo KJ, Jung JH. Performance comparison of photodynamic antimicrobial chemotherapy with visible-light-activated organic dyes: Rose bengal, crystal violet, methylene blue, and toluidine blue O. Environ Res 2023; 238:117159. [PMID: 37722581 DOI: 10.1016/j.envres.2023.117159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 09/09/2023] [Accepted: 09/14/2023] [Indexed: 09/20/2023]
Abstract
This study evaluated the photobiocidal performance of four widely distributed visible-light-activated (VLA) dyes against two bacteria (Staphylococcus epidermidis and Escherichia coli) and two bacteriophages (phages MS2 and phi 6): rose bengal (RB), crystal violet, methylene blue, and toluidine blue O (TBO). The photobiocidal performance of each dye depended on the relationship between the type of dye and microorganism. Gram-negative E. coli and the non-enveloped structure of phage MS2 showed more resistance to the photobiocidal reaction than Gram-positive S. epidermidis and the enveloped structure of phage phi 6. RB had the highest potential to yield reactive oxygen species. However, the photobiocidal performance of RB was dependent on the magnitude of the surface charge of the microorganisms; for example, anionic RB induced a negative surface charge and thus electrical repulsion. On the other hand, the photobiocidal performance of TBO was observed to be less affected by the microorganism type. The comparative results presented in our study have significant implications for selecting photodynamic antimicrobial chemotherapy (PACT) dyes suitable for specific situations and purposes. Furthermore, they contribute to the advancement of PACT-related technologies by enhancing their applicability and scalability.
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Affiliation(s)
- Jae Hak Shin
- Department of Mechanical Engineering, Sejong University, Seoul, 05006, Republic of Korea
| | - Sang Bin Jeong
- Department of Mechanical Engineering, Sejong University, Seoul, 05006, Republic of Korea; Indoor Environment Center, Korea Testing Laboratory, Seoul, 08389, Republic of Korea
| | - In Ho Kim
- Department of Mechanical Engineering, Sejong University, Seoul, 05006, Republic of Korea
| | - Seung Yeon Lee
- Department of Mechanical Engineering, Sejong University, Seoul, 05006, Republic of Korea
| | - Gi Byoung Hwang
- Material Chemistry Research Centre, Department of Chemistry, University College London, London, WC1H 0AJ, United Kingdom
| | - Inyong Park
- Department of Sustainable Environment Research, Korea Institute of Machinery and Materials, Daejeon, 34141, Republic of Korea
| | - Ki Joon Heo
- School of Mechanical Engineering, Chonnam National University, Gwangju, 61186, Republic of Korea.
| | - Jae Hee Jung
- Department of Mechanical Engineering, Sejong University, Seoul, 05006, Republic of Korea.
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Özer B, Özbek Çelık B. Comparative in vitro activities of eravacycline in combination with colistin, meropenem, or ceftazidime against various Achromobacter spp. strains isolated from patients with cystic fibrosis. J Chemother 2023; 35:700-706. [PMID: 37211830 DOI: 10.1080/1120009x.2023.2213600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 04/21/2023] [Indexed: 05/23/2023]
Abstract
The Achromobacter species is an emerging pathogen causing chronic bacterial infections in patients with certain conditions, such as cystic fibrosis (CF), hematologic and solid organ malignancies, renal failure, and certain immune deficiencies. In the present study, we assessed the in vitro bactericidal activities of eravacycline, either alone or in combination with colistin, meropenem, or ceftazidime, using 50 Achromobacter spp. strains isolated from CF patients. We also investigated the synergistic interactions of these combinations using microbroth dilutions against 50 strains of Achromobacter spp. Bactericidal, and we assessed the synergistic effects of the tested antibiotic combinations using the time-kill curve (TKC) technique. Our studies show that meropenem alone is the most effective antibiotic of those tested. Based on the TKCs, we found that eravacycline-colistin combinations display both bactericidal and synergistic activities for 24 h against 5 of the 6 Achromobacter spp. strains, including colistin-resistant ones, at 4xMIC of colistin. Although we did not observe synergistic interactions with eravacycline-meropenem or eravacycline-ceftazidime combinations, we did not observe antagonism with any combination tested.This study's findings could have important implications for antimicrobial therapy with tested antibiotics.
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Affiliation(s)
- Bekir Özer
- Department of Pharmaceutical Microbiology, Institute of Graduate Studies in Health Sciences, University of Istanbul, Beyazıt, Istanbul, Turkey
- Department of Pharmaceutical Microbiology, University of Istanbul, Beyazıt, Istanbul, Turkey
| | - Berna Özbek Çelık
- Department of Pharmaceutical Microbiology, University of Istanbul, Beyazıt, Istanbul, Turkey
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Okasha H, Dahroug H, Gouda AE, Shemis MA. A novel antibacterial approach of Cecropin-B peptide loaded on chitosan nanoparticles against MDR Klebsiella pneumoniae isolates. Amino Acids 2023; 55:1965-1980. [PMID: 37966500 PMCID: PMC10724327 DOI: 10.1007/s00726-023-03356-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Accepted: 10/28/2023] [Indexed: 11/16/2023]
Abstract
Egypt has witnessed the emergence of multidrug-resistant (MDR) Klebsiella pneumoniae, which has posed a serious healthcare challenge. The proper treatment choice for MDR-KP infections is not well determined which renders the problem more complicated, thus making the control of such infections a serious challenge for healthcare professionals. This study aims to encapsulate the cationic antimicrobial peptide; Cecropin-B (Cec-B), to increase its lifetime, drug targeting, and efficacy and study the antimicrobial effect of free and encapsulated recombinant rCec-B peptide on multidrug-resistant K. pneumoniae (MDR-KP) isolates. Fifty isolates were collected from different clinical departments at Theodore Bilharz Research Institute. Minimal inhibitory concentrations (MICs) of rCec-B against MDR-KP isolates were determined by the broth microdilution test. In addition, encapsulation of rCec-B peptide into chitosan nanoparticles and studying its bactericidal effect against MDR-KP isolates were also performed. The relative expression of efflux pump and porin coding genes (ArcrB, TolC, mtdK, and Ompk35) was detected by quantitative PCR in treated MDR-KP bacterial isolates compared to untreated isolates. Out of 60 clinical MDR isolates, 50 were MDR-KP. 60% of the isolates were XDR while 40% were MDR. rCec-B were bactericidal on 21 isolates, then these isolates were subjected to treatment using free nanocapsule in addition to the encapsulated peptide. Free capsules showed a mild cytotoxic effect on MDR-KP at the highest concentration. MIC of encapsulated rCec-B was higher than the free peptide. The expression level of genes encoding efflux and porin (ArcrB, TolC, mtdK, and Ompk35) was downregulated after treatment with encapsulated rCec-B. These findings indicate that encapsulated rCec-B is a promising candidate with potent antibacterial activities against drug-resistant K. pneumoniae.
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Affiliation(s)
- Hend Okasha
- Biochemistry and Molecular Biology Department, Theodor Bilharz Research Institute, Giza, Egypt.
| | - Heba Dahroug
- Microbiology Department, Theodor Bilharz Research Institute, Giza, Egypt
| | - Abdullah E Gouda
- Biochemistry and Molecular Biology Department, Theodor Bilharz Research Institute, Giza, Egypt
| | - Mohamed Abbas Shemis
- Biochemistry and Molecular Biology Department, Theodor Bilharz Research Institute, Giza, Egypt
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Ahmad Wadaan M. Zinc oxide doped on reduced graphene oxide nanosheets activated by solar radiation for degradation of organic pollutants and bacterial inactivation. Chemosphere 2023:139105. [PMID: 37327823 DOI: 10.1016/j.chemosphere.2023.139105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 05/18/2023] [Accepted: 05/31/2023] [Indexed: 06/18/2023]
Abstract
Metal ion-based nanocomposite materials were recognized to exhibit a wide range of photocatalytic and biological applications. This study aims to synthesize zinc oxide doped reduced graphene oxide (ZnO/RGO) nanocomposite in sufficient quantities through the sol-gel method. The physical characters of the synthesized ZnO/RGO nanocomposite were determined by X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Scanning electron microscope (SEM), Energy-dispersive X-ray (EDS) and Transmission electron microscopy (TEM) techniques. The TEM image results revealed rod-like morphology of the ZnO/RGO nanocomposite. The X-ray photoelectron spectral data revealed the formation of ZnO nanostructures representing the banding energy gap value of 1044.6 and 1021.5 eV positions. Moreover, ZnO/RGO nanocomposites displayed excellent photocatalytic degradation with a degradation efficiency of 98.6%. This research not only demonstrates the photocatalytic efficiency of zinc oxide-doped RGO nanosheets but also illustrates the antibacterial efficacy against two different bacterial pathogens including Gram-positive E. coli and Gram-negative S. aureus. Furthermore, this research highlights an eco-friendly and inexpensive preparation of nanocomposite material for a wide range of environmental applications.
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Affiliation(s)
- Mohammad Ahmad Wadaan
- Bio-Products Research Department of Zoology, College of Sciences, King Saud University, P.O. Box; 2455, Riyadh, 11451, Saudi Arabia.
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Cao Y, Wang S, Su Y, Zhang J, Song H, Wang Y, Chen S. Rapid and persistent bactericidal cotton fabrics finished facilely with reactive N-halamine. Int J Biol Macromol 2023; 240:124495. [PMID: 37076078 DOI: 10.1016/j.ijbiomac.2023.124495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 04/12/2023] [Accepted: 04/13/2023] [Indexed: 04/21/2023]
Abstract
Cotton fabrics (CFs) with persistent and rapid bactericidal capability would be of great significance for daily health protection because CFs are very suitable for the growth and reproduction of microorganisms. Herein, we developed a reactive N-halamine compound, 3-(3-hydroxypropyl diisocyanate)-5,5-dimethylhydantoin (IPDMH), that can be covalently bound to a CF to generate a bactericidal CF after chlorination (CF-DMF-Cl) without damaging its surface morphology. The antibacterial rates of CF-DMF-Cl (0.5 wt% IPDMH) against the gram-negative bacterium Escherichia coli (E. coli) and gram-positive bacterium Staphylococcus aureus (S. aureus) reached 99.99 % and were maintained at 90 % (against E. coli) and 93.5 % (against S. aureus) after 50 laundering cycles. The combination of contact killing and release killing mechanisms by CF-PDM-Cl leads to its rapid and persistent bactericidal activity. In addition, CF-DMF-Cl exhibits adequate biocompatibility, well-maintained mechanical properties, air/water vapor permeability and whiteness. Therefore, the proposed CF-DMF-Cl has great potential applications as a bactericidal CF for use in medical textiles, sportswear, home dressings, and so on.
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Affiliation(s)
- Yihong Cao
- Nanshan District Key Lab for Biopolymers and Safety Evaluation, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, PR China; Health MY (Shenzhen) Technology Co., Ltd, Shenzhen 518060, PR China
| | - Shu Wang
- Nanshan District Key Lab for Biopolymers and Safety Evaluation, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Yong Su
- Nanshan District Key Lab for Biopolymers and Safety Evaluation, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, PR China; Shenzhen Tianding New Materials Co., Ltd, Shenzhen 518057, PR China
| | - Jianxiang Zhang
- Nanshan District Key Lab for Biopolymers and Safety Evaluation, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, PR China; Advance Denim Co., Ltd, Foshan 528306, PR China
| | - Haibo Song
- Nanshan District Key Lab for Biopolymers and Safety Evaluation, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, PR China; Shenzhen Purcotton Technology Co. Ltd, Shenzhen 518109, China
| | - Yuanfeng Wang
- Nanshan District Key Lab for Biopolymers and Safety Evaluation, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, PR China.
| | - Shiguo Chen
- Nanshan District Key Lab for Biopolymers and Safety Evaluation, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, PR China; Health MY (Shenzhen) Technology Co., Ltd, Shenzhen 518060, PR China.
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11
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Wang Z, Fu C, Gao Y, Wu Z, Chen W, Hu B, Xu S, Zhang Z, Yang P. Dual functional antifouling and bactericidal proteinaceous coating. Colloids Surf B Biointerfaces 2023; 225:113239. [PMID: 36889106 DOI: 10.1016/j.colsurfb.2023.113239] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 02/26/2023] [Accepted: 03/01/2023] [Indexed: 03/06/2023]
Abstract
Coatings with both anti-fouling and bactericidal functions are used in many fields. In this work, lysozyme (Lyso) and poly (2-Methylallyloxyethyl phosphorylcholine) (PMPC) conjugate (Lyso-PMPC) is successfully designed and synthesized for the first time. A new nanofilm (PTL-PMPC) is then obtained by phase transition of lysozyme via the reduction of disulfide bonds in Lyso-PMPC. Benefit from lysozyme amyloid-like aggregates as surface anchors, the nanofilm shows excellent stability, it remains unchanged after treatment under extreme conditions such as ultrasonic and 3 M tape peeling. Due to the presence of zwitterionic polymer (PMPC) brush, the PTL-PMPC film has excellent antifouling properties against cell, bacterium, fungi, proteins, biofluids, phosphatide, polyose, esters, and carbohydrates. Meanwhile, the PTL-PMPC film is colourless and transparent. Further, a new coating (PTL-PMPC/PHMB) is fabricated by hybridizing PTL-PMPC with poly (hexamethylene biguanide) (PHMB). This coating had excellent antibacterial properties, and the antibacterial rate against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) is more than 99.99%. In addition, the coating exhibit good hemocompatibility and low cytotoxicity.
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Affiliation(s)
- Zhengge Wang
- College of Chemical Engineering, Hebei Normal University of Science and Technology, Qinhuangdao 066600, China
| | - Chengyu Fu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710072, China
| | - Yingtao Gao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710072, China
| | - Zhaoji Wu
- College of Chemical Engineering, Hebei Normal University of Science and Technology, Qinhuangdao 066600, China
| | - Weiqing Chen
- College of Chemical Engineering, Hebei Normal University of Science and Technology, Qinhuangdao 066600, China
| | - Bowen Hu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710072, China
| | - Siqi Xu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710072, China
| | - Zhigang Zhang
- College of Chemical Engineering, Hebei Normal University of Science and Technology, Qinhuangdao 066600, China.
| | - Peng Yang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710072, China.
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12
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Bernardino PN, de Paula CL, Pereira AFM, Ribeiro MG, de Carvalho Azevedo VA, Borges AS, Fernandes-Júnior A, Oliveira-Filho JP. Potential in vitro action of an adenosine analog and synergism with penicillin against Corynebacterium pseudotuberculosis. Braz J Microbiol 2023; 54:559-563. [PMID: 36525240 PMCID: PMC9944597 DOI: 10.1007/s42770-022-00885-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 11/29/2022] [Indexed: 12/23/2022] Open
Abstract
Caseous lymphadenitis is a well-known disease caused by Corynebacterium pseudotuberculosis affecting small ruminants with small significance to human health because of its minor zoonotic potential. In both cases, few treatment options are available and conventional antimicrobial therapy is commonly refractory due to development of pyogranulomatous reactions, bringing great interest in discovering novel therapeutics for more suitable approaches. Dideoxynucleotides presented antibacterial action against various bacteria but were never described for C. pseudotuberculosis. Hypothesizing the antimicrobial action of 2',3'-dideoxiadenosine (ddATP) against C. pseudotuberculosis, we performed for the first time an investigation of its minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) in the ATCC® 19,410 strain and a well-characterized clinical isolate of C. pseudotuberculosis. We also assessed potential synergism with penicillin. ddATP showed a growth delay effect for C. pseudotuberculosis at 2 µmol/mL and a MIC and MBC of 4 µmol/mL against the ATCC® 19,410 strain, but not for the clinical strain. An antimicrobial effect was observed when using concentrations lower than the MIC of ddATP associated with penicillin for both strains tested. Our data suggest the potential of nucleotide analogs, especially adenosine, and its combination with penicillin, as a possible novel treatment for C. pseudotuberculosis-induced infections, and contributes with knowledge regarding alternative drugs to treat C. pseudotuberculosis infections.
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Affiliation(s)
- Pedro Negri Bernardino
- School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, Brazil.
- School of Veterinary Medicine, Molecular Biosciences Department, University of California - Davis, Davis, USA.
| | | | | | - Márcio Garcia Ribeiro
- School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, Brazil
| | | | - Alexandre Secorun Borges
- School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, Brazil
| | | | - José Paes Oliveira-Filho
- School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, Brazil
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13
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Ali F, Akbar S, Sillanpaa M, Younas U, Ashraf A, Pervaiz M, Kausar R, Ahmad I, Alothman AA, Ouladsmane M. Recyclable Cu-Ag bimetallic nanocatalyst for radical scavenging, dyes removal and antimicrobial applications. Chemosphere 2023; 313:137321. [PMID: 36410518 DOI: 10.1016/j.chemosphere.2022.137321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 10/26/2022] [Accepted: 11/17/2022] [Indexed: 06/16/2023]
Abstract
An ecofriendly and cost effective green method has been used for the synthesis of recyclable, high functional nanoparticles. Bimetallic nanoparticles (BmNPs), Cu-Ag, have been synthesized using beetroot extract as reducing and capping agent. Formation of BmNPs was initially confirmed by UV-visible analysis, having distinct peaks of Ag at 429 nm and Cu at 628 nm. FTIR analysis also confirmed the association of bioactive phytochemicals with Cu-Ag nanoparticles. Crystallinity and morphology of BmNPs was determined through X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), dynamic light scattering (DLS) and energy dispersion X-ray spectroscopy (EDAX). The size of spherical shape Cu-Ag BmNPs was found to be 75.58 nm and EDAX studies confirmed the percent elemental composition of Cu and Ag in synthesized nanocatalyst. Results of different analysis provided supported evidences regarding the formation of BmNPs. Catalytic potential of BmNPs was tested for the degradation of rhodamine B (Rh-B), methylene blue (MB) and methyl orange (MO) dyes. Cu-Ag BmNPs exhibited outstanding catalytic activity for the degradation of selected organic dyes and percent degradation was recorded more than 90% for each dye. In addition, antiradical property of BmNPs was tested employing DPPH● and ABTS●+ assays and it was found to be promising. Synthesized BmNPs also exhibited strong antimicrobial activity against Salmonella typhimurium and Bacillus subtilis. Recyclability of nanoparticles was also evaluated and recovery from dye degradation reaction mixture was successfully achieved. The recovered nanoparticles exhibited same catalytic potential for the degradation of Rh-B. The objective of the current study was to synthesize BmNPs Cu-Ag employing a cost effective green method having promising catalytic, antiradical and antimicrobial potential. Further, BmNPs were reused after recovery from catalytic reactions, proving that BmNPs can be recycled having the same efficiency as that of a freshly prepared Cu-Ag BmNPs.
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Affiliation(s)
- Faisal Ali
- Department of Chemistry, The University of Lahore, Lahore, Pakistan
| | - Sadia Akbar
- Department of Chemistry, The University of Lahore, Lahore, Pakistan
| | - Mika Sillanpaa
- Department of Chemical Engineering, School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg, P. O. Box 17011, Doornfontein, 2028, South Africa; Department of Biological and Chemical Engineering, Aarhus University, Nørrebrogade 44, 8000, Aarhus, Denmark
| | - Umer Younas
- Department of Chemistry, The University of Lahore, Lahore, Pakistan.
| | - Adnan Ashraf
- Department of Chemistry, The University of Lahore, Lahore, Pakistan.
| | - Muhammad Pervaiz
- Department of Chemistry, Government College University, Lahore, Pakistan
| | - Rizwan Kausar
- Institute of Chemistry, University of Sargodha, Sargodha, Pakistan
| | - Ikram Ahmad
- Department of Chemistry, University of Sahiwal, Sahiwal, Pakistan
| | - Asma A Alothman
- Chemistry Department, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Mohamed Ouladsmane
- Chemistry Department, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
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14
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Fu X, Rehman U, Wei L, Chen ZS, Abourehab MAS, Kesharwani P, Cheng ZH. Silver-dendrimer nanocomposite as emerging therapeutics in anti-bacteria and beyond. Drug Resist Updat 2023; 68:100935. [PMID: 36774747 DOI: 10.1016/j.drup.2023.100935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 01/10/2023] [Accepted: 01/27/2023] [Indexed: 01/30/2023]
Abstract
To develop next-generation nanomedicine, theranostic nanotherapeutic strategies are increasingly being emphasized. In recent years, it is observed that the effective lifetime of anti-bacterial and anti-cancer agent is diminishing, which undermines the economic incentives necessary for clinical development and therapeutic applications. Thus, novel formulations ought to not only kill drug resistant strains and cancerous cells but also inhibit their formation. Recently, metallic nanoparticles [for example- silver (Ag) nanoparticles] have been widely investigated for their biomedical applications. The so-called applications necessitate the inclusion of these nanoparticles inside polymeric matrices (for example- dendrimer) leading to chemical functionalization of the metallic nanoparticles. Silver and silver nanoparticles' antibacterial activity has already been well established over years. Dendrimers due to their homogeneous highly branched structure and uniform composition are perfectly suitable for the inclusion of silver nanoparticles [Ag NPs]. Recently, the increasing trend in the development of Ag-dendrimer nanocomposites is attributed to the excellent antibacterial activity of Ag as well as dendrimer's unique properties like variable functional terminal ends and potential antibacterial effect necessarily. This review provides an informative overview regarding the numerous aspects of bactericidal and other biomedical applications of Ag-dendrimer nanocomposites, particularly emphasizing analysis of existing research and prospective worth to the pharmaceutical sector in future.
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Nandhini SN, Sisubalan N, Vijayan A, Karthikeyan C, Gnanaraj M, Gideon DAM, Jebastin T, Varaprasad K, Sadiku R. Recent advances in green synthesized nanoparticles for bactericidal and wound healing applications. Heliyon 2023; 9:e13128. [PMID: 36747553 PMCID: PMC9898667 DOI: 10.1016/j.heliyon.2023.e13128] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 01/14/2023] [Accepted: 01/17/2023] [Indexed: 01/22/2023] Open
Abstract
Nanotechnology has become an exciting area of research in diverse fields, such as: healthcare, food, agriculture, cosmetics, paints, lubricants, fuel additives and other fields. This review is a novel effort to update the practioneers about the most current developments in the widespread use of green synthesized nanoparticles in medicine. Biosynthesis is widely preferred among different modes of nanoparticle synthesis since they do not require toxic chemical usage and they are environment-friendly. In the green bioprocess, plant, algal, fungal and cyanobacterial extract solutions have been utilized as nucleation/capping agents to develop effective nanomaterials for advanced medical applications. Several metal salts, such as silver, zinc, titanium and other inorganic salts, were utilized to fabricate innovative nanoparticles for healthcare applications. Irrespective of the type of wound, infection in the wound area is a widespread problem. Micro-organisms, the prime reason for wound complications, are gradually gaining resistance against the commonly used antimicrobial drugs. This necessitates the need to generate nanoparticles with efficient antimicrobial potential to keep the pathogenic microbes under control. These nanoparticles can be topically applied as an ointment and also be used by incorporating them into hydrogels, sponges or electrospun nanofibers. The main aim of this review is to highlight the recent advances in the Ag, ZnO and TiO2 nanoparticles with possible wound healing applications, coupled with the bactericidal ability of a green synthesis process.
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Affiliation(s)
- Shankar Nisha Nandhini
- PG and Research Department of Botany, St. Joseph's College (Autonomous), Tiruchirappalli, 620 002, Tamil Nadu, India
| | - Natarajan Sisubalan
- Department of Botany, Bishop Heber College (Autonomous), Affi. to Bharathidasan University, Trichy, 620017, Tamil Nadu, India,Department of Chemical and Biochemical Engineering, Dongguk University, Seoul, 04620, Republic of Korea,Corresponding author. Department of Botany, Bishop Heber College (Autonomous), Affi. to Bharathidasan University, Trichy, 620017, Tamil Nadu, India.;
| | - Arumugam Vijayan
- Department of Microbiology, SRM Institute of Science and Technology, Tiruchirappalli Campus, Tiruchirappalli, 621105, TN, India
| | | | - Muniraj Gnanaraj
- Department of Biotechnology and Bioinformatics, Bishop Heber College (Autonomous), Tiruchirappalli, 620 017, India
| | - Daniel Andrew M. Gideon
- Department of Biochemistry, St. Joseph's University, Langford Road, Bengaluru, 560027, Karnataka, India
| | - Thomas Jebastin
- Department of Biotechnology and Bioinformatics, Bishop Heber College (Autonomous), Tiruchirappalli, 620 017, India
| | - Kokkarachedu Varaprasad
- Facultad de Ingeniería, Arquitectura y Deseno, Universidad San Sebastián, Lientur 1457, Concepción, 4080871, Chile,Corresponding author. Universidad San Sebastián, Lientur 1457, Concepción, 4080871, Chile.;
| | - Rotimi Sadiku
- Institute of Nano Engineering Research (INER), Department of Chemical, Metallurgical and Materials Engineering (Polymer Division), Tshwane University of Technology, Pretoria West Campus, Staatsarillerie Rd, Pretoria, 1083, South Africa
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16
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Shiferaw M, Yusuf Z, Desta M. Physicochemical Properties and Biological Activities of Koseret (Lippia Adoensis Hochst. Var. Koseret) seed and leaf Oil Extracts. Recent Pat Biotechnol 2022; 17:142-150. [PMID: 35718955 DOI: 10.2174/1872208316666220617104318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 03/03/2022] [Accepted: 04/08/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND Lippia adoensis Hoechst var. adoensis (wild variety) and variety koseret (cultivated variety) have been used as traditional medicine, condiments, and endemic to Ethiopia. OBJECTIVE This study aimed to assess the physicochemical properties and biological activities of oil extracts from seed and leaves of koseret (L. adoensis var. koseret). METHODOLOGY Soxhlet apparatus was used for oil extraction using hexane as a solvent. The oil quality assessment was made based on oil yield, acid value, percent free fatty acid, peroxide value while the Biological activities were investigated based on antioxidant and antimicrobial activities. The antimicrobial experiment was arranged as 2 x1x4 in a completely randomized factorial design with three replications. RESULTS The result indicated that significantly higher oil yield (2.25%), acid value (2.66%) and free fatty acid (1.34%) were recorded for seed oil using solvent extraction method. Leaf oil was recorded significantly higher values of DPPH (2, 2- diphenyl-1-picrylhydrazyl), ascorbic acid and total carotenoid contents but lower value of hydrogen peroxide scavenging activity indicating that leaf oil presented higher antioxidant activity than seed oil in koseret. The koseret leaf oil demonstrated stronger antibacterial activity with maximum zone of inhibition (14.50±0.21mm), minimum inhibitory concentration (MIC, 0.25µg/ml) and corresponding minimum bactericidal concentration (MBC, 0.25µg/ml) against S. aureus. Furthermore, leaf oil has also presented stronger antifungal activity with maximum zone of inhibition (14.83mm), MIC (0.25 µg/ml), and minimum fungicidal concentration (MFC, 0.50 µg/ml) against Aspergillus versicolor. CONCLUSION It can be concluded from the results of this study that leaf oil extract has demonstrated better biological activities including both antioxidant and antimicrobial potentials than seed oil in koseret.
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Affiliation(s)
- Mekdes Shiferaw
- School of Biological Sciences and Biotechnology, Haramaya University, Ethiopia
| | - Zekeria Yusuf
- School of Biological Sciences and Biotechnology, Haramaya University, Ethiopia
| | - Mulugeta Desta
- School of Biological Sciences and Biotechnology, Haramaya University, Ethiopia
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17
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Paris EC, Malafatti JOD, Moreira AJ, Santos LC, Sciena CR, Zenatti A, Escote MT, Mastelaro VR, Joya MR. CuO nanoparticles decorated on hydroxyapatite/ferrite magnetic support: photocatalysis, cytotoxicity, and antimicrobial response. Environ Sci Pollut Res Int 2022; 29:41505-41519. [PMID: 35088254 DOI: 10.1007/s11356-021-18263-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 12/17/2021] [Indexed: 06/14/2023]
Abstract
Photocatalysts supported in magnetic nanocomposites for application in environmental remediation processes have been evaluated for removing contaminants due to easy recovery and low toxicity to the ecosystem. In this work, copper oxide (CuO) nanoparticles with photocatalytic properties were decorated on magnetic support constituted by hydroxyapatite (HAP) and ferrite to achieve efficiency in contaminated water remediation under visible light irradiation. First, nanomaterials were obtained by precipitation route, allowing fast and straightforward synthesis. Then, CuO nanoparticles with 6 nm diameter were efficiently decorated on magnetic support (25 nm), showing a high ability to absorb visible light irradiation (bandgap) to promote electronic transition and charge separation. Under visible irradiation, CuO promotes the H2O2 reduction in the conduction band (BC) to form hydroxyl radicals (•OH), which are responsible for rhodamine B (RhB) dye degradation (> 90% in 60 min). Magnetic hysteresis assays confirmed the magnetic properties of HAP/ferrite support, which enabled the recovery and reuse of the magnetic photocatalyst efficiently up to 3 cycles. Due to low Cu2+ leaching after the photocatalytic application stage, cytotoxicity assay for the Allium cepa seeds did not exhibit abnormal cells other than those commonly found. Furthermore, the CuO-decorated nanoparticles showed bactericidal activity against S. aureus (Gram-positive) and E. coli (Gram-negative) microorganisms, being more significant for the first one. Thus, the developed nanocomposite of CuO nanoparticles decorated on the magnetic support surface showed to be a complete system for water remediation, acting in contaminant degradation under visible light irradiation and bactericidal control with environmentally friendly characteristics.Graphical abstract CuO nanoparticles decorated on hydroxyapatite/ferrite magnetic support acting as a photocatalytic and bactericidal system.
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Affiliation(s)
- Elaine Cristina Paris
- Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentação, XV de Novembro St., 1452, São Carlos, SP, 13560-970, Brazil.
| | - João Otávio Donizette Malafatti
- Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentação, XV de Novembro St., 1452, São Carlos, SP, 13560-970, Brazil
- Department of Chemistry, Federal University of São Carlos, Rod. Washington Luiz, km 235, zip code: 13565-905, São Carlos, SP, Brazil
| | - Ailton José Moreira
- Department of Chemistry, Federal University of São Carlos, Rod. Washington Luiz, km 235, zip code: 13565-905, São Carlos, SP, Brazil
| | - Lílian Cruz Santos
- Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentação, XV de Novembro St., 1452, São Carlos, SP, 13560-970, Brazil
- Department of Chemistry, Federal University of São Carlos, Rod. Washington Luiz, km 235, zip code: 13565-905, São Carlos, SP, Brazil
| | - Camila Rodrigues Sciena
- Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentação, XV de Novembro St., 1452, São Carlos, SP, 13560-970, Brazil
- Department of Chemistry, Federal University of São Carlos, Rod. Washington Luiz, km 235, zip code: 13565-905, São Carlos, SP, Brazil
| | - Alessandra Zenatti
- Center for Engineering, Modeling, and Applied Social Sciences, Federal University of ABC, Avenida dos Estados, 5001, Santo André, SP, 09210-580, Brazil
| | - Márcia Tsuyama Escote
- Center for Engineering, Modeling, and Applied Social Sciences, Federal University of ABC, Avenida dos Estados, 5001, Santo André, SP, 09210-580, Brazil
| | | | - Miryam Rincón Joya
- Departamento de Física, Facultad de Ciencias, Universidad Nacional de Colombia-Bogota, Carrera 30 Calle 45-03, 111321, Bogota, Colombia
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18
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Sengupta D, Rai M, Hoque Mazumdar Z, Sharma D, Malabika Singha K, Pandey P, Gaur R. Two cationic meso-thiophenium porphyrins and their zinc-complexes as anti-HIV-1 and antibacterial agents under non-photodynamic therapy (PDT) conditions. Bioorg Med Chem Lett 2022; 65:128699. [PMID: 35341921 DOI: 10.1016/j.bmcl.2022.128699] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 03/16/2022] [Accepted: 03/23/2022] [Indexed: 11/02/2022]
Abstract
The anti-HIV-1 and antimicrobial activities of novel cationic meso-thiophenium porphyrins and their zinc-complex are reported under in vitro non-photodynamic (PDT) conditions. While all the cationic porphyrins led to the inhibition of de novo virus infection, the Zn(II)-complexes of T2(OH)2M (A2B2-type) and T(OH)3M (AB3-type) displayed potent inhibition of HIV-1 entry with T2(OH)2MZn displaying maximal anti-HIV activity. The Zinc complex of both the thiophenium porphyrins T2(OH)2M and T(OH)3M also depicted antibacterial activities against Escherichia coli (ATCC 25922) and more prominently against Staphylococcus aureus (ATCC 25923). Again, the antibacterial activity was more potent for T2(OH)2MZn. Our study highlighted that the presence of two thiophenium groups at the meso-positions of the A2B2-type porphyrins along with zinc strongly enhanced anti-HIV and antimicrobial properties of these novel thiophenium porphyrins under non-PDT conditions.
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Affiliation(s)
- Devashish Sengupta
- Department of Chemistry, Assam University, Silchar, Assam 788011, India.
| | - Madhu Rai
- Faculty of Life Sciences and Biotechnology, South Asian University, New Delhi 110021, India
| | | | - Debdulal Sharma
- Department of Chemistry, Assam University, Silchar, Assam 788011, India
| | - K Malabika Singha
- Department of Microbiology, Assam University, Silchar, Assam 788011, India
| | - Piyush Pandey
- Department of Microbiology, Assam University, Silchar, Assam 788011, India.
| | - Ritu Gaur
- Faculty of Life Sciences and Biotechnology, South Asian University, New Delhi 110021, India.
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Iglesias-Fernandez M, Buxadera-Palomero J, Sadowska JM, Espanol M, Ginebra MP. Implementation of bactericidal topographies on biomimetic calcium phosphates and the potential effect of its reactivity. Biomater Adv 2022; 136:212797. [PMID: 35929296 DOI: 10.1016/j.bioadv.2022.212797] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 04/01/2022] [Accepted: 04/07/2022] [Indexed: 06/15/2023]
Abstract
Since the discovery that nanostructured surfaces were able to kill bacteria, many works have been published focusing on the design of nanopatterned surfaces with antimicrobial properties. Synthetic bone grafts, based on calcium phosphate (CaP) formulations, can greatly benefit from this discovery if adequate nanotopographies can be developed. However, CaP are reactive materials and experience ionic exchanges when placed into aqueous solutions which may in turn affect cell behaviour and complicate the interpretation of the bactericidal results. The present study explores the bactericidal potential of two nanopillared CaP prepared by hydrolysis of two different sizes of α-tricalcium phosphate (α-TCP) powders under biomimetic or hydrothermal conditions. A more lethal bactericidal response toward Pseudomonas aeruginosa (~75% killing efficiency of adhered bacteria) was obtained from the hydrothermally treated CaP which consisted in a more irregular topography in terms of pillar size (radius: 20-60 nm), interpillar distances (100-1500 nm) and pillar distribution (pillar groups forming bouquets) than the biomimetically treated one (radius: 20-40 nm and interpillar distances: 50-200 nm with a homogeneous pillar distribution). The material reactivity was greatly influenced by the type of medium (nutrient-rich versus nutrient-free) and the presence or not of bacteria. A lower reactivity and superior bacterial attachment were observed in the nutrient-free medium while a lower attachment was observed for the nutrient rich medium which was explained by a superior reactivity of the material paired with the lower tendency of planktonic bacteria to adhere on surfaces in the presence of nutrients. Importantly, the ionic exchanges produced by the presence of materials were not toxic to planktonic cells. Thus, we can conclude that topography was the main contributor to mortality in the bacterial adhesion tests.
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Affiliation(s)
- Marc Iglesias-Fernandez
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019 Barcelona, Spain; Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019 Barcelona, Spain
| | - Judit Buxadera-Palomero
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019 Barcelona, Spain; Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019 Barcelona, Spain
| | - Joanna-Maria Sadowska
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019 Barcelona, Spain; Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019 Barcelona, Spain
| | - Montserrat Espanol
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019 Barcelona, Spain; Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019 Barcelona, Spain.
| | - Maria-Pau Ginebra
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019 Barcelona, Spain; Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019 Barcelona, Spain; Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Baldiri Reixac 10-12, 08028 Barcelona, Spain
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Yuan S, Sun X, Yan S, Luan S, Song L, Yin J. Slippery 3-dimensional porous bioabsorbable membranes with anti-adhesion and bactericidal properties as substitute for vaseline gauze. Colloids Surf B Biointerfaces 2022; 212:112341. [PMID: 35074640 DOI: 10.1016/j.colsurfb.2022.112341] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 12/16/2021] [Accepted: 01/16/2022] [Indexed: 01/24/2023]
Abstract
Vaseline gauze is a common type of wound dressing that consist of absorbent gauze impregnated with white petrolatum. It has excellent anti-adhesive property which can reduce trauma during dressing changes. However, this kind of wound dressing doesn't have bacterial killing property. Thus, a new kind of wound dressing that has anti-adhesive and bactericidal properties is needed urgently. Creating slippery liquid-impregnated porous surfaces (SLIPS) that insensitive to the structure of porous solid are generally viewed as a new anti-adhesion strategy. To expand the potential utility of SLIPS as substitute for vaseline gauze, dual-functional slippery membranes with anti-adhesion and bactericidal properties by using triclosan, vegetable oils and polylactic acid (PLA) were prepared. It's demonstrated that the triclosan-loaded/vegetable oils-infused PLA membranes (T/V-PM) has good cytocompatibility in vitro. Notably, the T/V-PM can gradually release biocide molecule into surrounding aqueous media. Moreover, the T/V-PM can kill planktonic bacterial cells without loss of their antifouling property. The in vivo study revealed that the T/V-PM can prevent the secondary injuries during wound dressing changes. This simple and low-cost strategy can be applied to inhibit blood and bacterial adhesion, and prevent tissue adhesion at the wound site. It's confirmed that the T/V-PM have great potential as substitute for vaseline gauze.
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Affiliation(s)
- Shuaishuai Yuan
- Key Lab of Biobased Polymer Materials of Shandong Provincial Education Department, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China; National Engineering Laboratory of Medical Implantable Devices & Key Laboratory for Medical Implantable Devices of Shandong Province, WEGO Holding Company Limited, Weihai 264210, PR China.
| | - Xiuxia Sun
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Shunjie Yan
- National Engineering Laboratory of Medical Implantable Devices & Key Laboratory for Medical Implantable Devices of Shandong Province, WEGO Holding Company Limited, Weihai 264210, PR China
| | - Shifang Luan
- National Engineering Laboratory of Medical Implantable Devices & Key Laboratory for Medical Implantable Devices of Shandong Province, WEGO Holding Company Limited, Weihai 264210, PR China; State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China
| | - Lingjie Song
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China.
| | - Jinghua Yin
- National Engineering Laboratory of Medical Implantable Devices & Key Laboratory for Medical Implantable Devices of Shandong Province, WEGO Holding Company Limited, Weihai 264210, PR China; State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China
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Wang S, Li J, Cao Y, Gu J, Wang Y, Chen S. Non-Leaching, Rapid Bactericidal and Biocompatible Polyester Fabrics Finished with Benzophenone Terminated N-halamine. Adv Fiber Mater 2022; 4:119-128. [PMID: 35359822 PMCID: PMC8450708 DOI: 10.1007/s42765-021-00100-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 08/20/2021] [Indexed: 05/04/2023]
Abstract
UNLABELLED Pathogenic bacteria can proliferate rapidly on porous fabrics to form bacterial plaques/biofilms, resulting in potential sources of cross-transmissions of diseases and increasing cross-infection in public environments. Many works on antibacterial modification of cotton fabrics have been reported, while very few works were reported to endow poly(ethylene terephthalate) (PET) fabrics with non-leaching antibacterial function without compromising their innate physicochemical properties though PET is the most widely used fabric. Therefore, it is urgent to impart the PET fabrics with non-leaching antibacterial activity. Herein, a novel N-halamine compound, 1-chloro-3-benzophenone-5,5-dimethylhydantoin (Cl-BPDMH), was developed to be covalently bonded onto PET fabrics, rendering non-leaching antibacterial activity while negligible cytotoxicity based on contact-killing principle. Bacterial was easily adhered to Cl-BPDMH finished PET fabrics, and then it was inactivated quickly within 10 s. Furthermore, the breaking strength, breaking elongation, tearing strength, water vapor permeability, air permeability and whiteness of Cl-BPDMH finished PET fabrics were improved obviously compared to raw PET fabrics. Hence, this work developed a facile approach to fabricate multifunctional synthetic textiles to render outstanding and rapid bactericidal activity without compromising their physicochemical properties and biocompatibility. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s42765-021-00100-z.
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Affiliation(s)
- Shu Wang
- Nanshan District Key Lab for Biopolymers and Safety Evaluation, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060 People’s Republic of China
| | - JianNa Li
- Department of Pathogen Biology, School of Basic Medical Sciences, Shenzhen University Health Sciences Center, Shenzhen, 518060 People’s Republic of China
| | - Yihong Cao
- Nanshan District Key Lab for Biopolymers and Safety Evaluation, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060 People’s Republic of China
| | - JingWei Gu
- Nanshan District Key Lab for Biopolymers and Safety Evaluation, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060 People’s Republic of China
| | - YuanFeng Wang
- Nanshan District Key Lab for Biopolymers and Safety Evaluation, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060 People’s Republic of China
| | - ShiGuo Chen
- Nanshan District Key Lab for Biopolymers and Safety Evaluation, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060 People’s Republic of China
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22
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Salimiaghdam N, Singh L, Schneider K, Chwa M, Atilano SR, Nalbandian A, Limb GA, Kenney MC. Effects of fluoroquinolones and tetracyclines on mitochondria of human retinal MIO-M1 cells. Exp Eye Res 2022; 214:108857. [PMID: 34856207 PMCID: PMC9949354 DOI: 10.1016/j.exer.2021.108857] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 10/25/2021] [Accepted: 11/17/2021] [Indexed: 01/26/2023]
Abstract
Our goal was to explore the detrimental impacts of ciprofloxacin (CPFX) and tetracycline (TETRA) on human retinal Müller (MIO-M1) cells in vitro. Cells were exposed to 30, 60 and 120 μg/ml of CPFX and TETRA. The cellular metabolism was measured with the MTT assay. The JC-1 and CM-H2DCFDA assays were used to evaluate the levels of mitochondrial membrane potential (MMP) and ROS (reactive oxygen species), respectively. Mitochondrial DNA (mtDNA) copy number, along with gene expression levels associated with apoptotic (BAX, BCL2-L13, BCL2, CASP-3 and CASP-9), inflammatory (IL-6, IL-1β, TGF-α, TGF-β1 and TGF-β2) and antioxidant pathways (SOD2, SOD3, GPX3 and NOX4) were analyzed via Quantitative Real-Time PCR (qRT-PCR). Bioenergetic profiles were measured using the Seahorse® XF Flux Analyzer. Cells exposed 24 h to 120 μg/ml TETRA demonstrated higher cellular metabolism compared to vehicle-treated cells. At each time points, (i) all TETRA concentrations reduced MMP levels and (ii) ROS levels were reduced by TETRA 120 μg/ml treatment. TETRA caused (i) higher expression of CASP-3, CASP-9, TGF-α, IL-1B, GPX3 and SOD3 but (ii) decreased levels of TGF-B2 and SOD2. ATP production and spare respiratory capacity declined with TETRA treatment. Cellular metabolism was reduced with CPFX 120 μg/ml in all cultures and 60 μg/ml after 72 h. The CPFX 120 μg/ml reduced MMP in all cultures and ROS levels (72 h). CPFX treatment (i) increased expression of CASP-3, CASP-9, and BCL2-L13, (ii) elevated the basal oxygen consumption rate, and (iii) lowered the mtDNA copy numbers and expression levels of TGF-B2, IL-6 and IL-1B compared to vehicle-control cells. We conclude that clinically relevant dosages of bactericidal and bacteriostatic antibiotics can have negative effects on the cellular metabolism and mitochondrial membrane potential of the retinal MIO-M1 cells in vitro. It is noteworthy to mention that apoptotic and inflammatory pathways in exposed cells were affected significantly This is the first study showing the negative impact of fluoroquinolones and tetracyclines on mitochondrial behavior of human retinal MIO-M1 cells.
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Affiliation(s)
- Nasim Salimiaghdam
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA, 92697, USA
| | - Lata Singh
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA, 92697, USA; Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India
| | - Kevin Schneider
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA, 92697, USA
| | - Marilyn Chwa
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA, 92697, USA
| | - Shari R Atilano
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA, 92697, USA
| | - Angele Nalbandian
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA, 92697, USA
| | - G Astrid Limb
- Institute of Ophthalmology, University College, London, United Kingdom
| | - M Cristina Kenney
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA, 92697, USA; Department of Pathology and Laboratory Medicine, University of California Irvine, Irvine, CA, 92697, USA.
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Smith JL, Tran N, Song T, Liang D, Qian M. Robust bulk micro-nano hierarchical copper structures possessing exceptional bactericidal efficacy. Biomaterials 2021; 280:121271. [PMID: 34864450 DOI: 10.1016/j.biomaterials.2021.121271] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 11/01/2021] [Accepted: 11/22/2021] [Indexed: 12/29/2022]
Abstract
Conventional copper (Cu) metal surfaces are well recognized for their bactericidal properties. However, their slow bacteria-killing potency has historically excluded them as a rapid bactericidal material. We report the development of a robust bulk superhydrophilic micro-nano hierarchical Cu structure that possesses exceptional bactericidal efficacy. It resulted in a 4.41 log10 reduction (>99.99%) of the deadly Staphylococcus aureus (S. aureus) bacteria within 2 min vs. a 1.49 log10 reduction (96.75%) after 240 min on common Cu surfaces. The adhered cells exhibited extensive blebbing, loss of structural integrity and leakage of vital intracellular material, demonstrating the rapid efficacy of the micro-nano Cu structure in destructing bacteria membrane integrity. The mechanism was attributed to the synergistic degradation of the cell envelope through enhanced release and therefore uptake of the cytotoxic Cu ions and the adhesion-driven mechanical strain due to its rapid ultimate superhydrophilicity (contact angle drops to 0° in 0.18 s). The scalable fabrication of this micro-nano Cu structure was enabled by integrating bespoke precursor alloy design with microstructure preconditioning for dealloying and demonstrated on 2000 mm2 Cu surfaces. This development paves the way to the practical exploitation of Cu as a low-cost antibiotic-free fast bactericidal material.
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Affiliation(s)
- J L Smith
- RMIT University, School of Engineering, Melbourne, Victoria, 3000, Australia; CSIRO, Manufacturing, Clayton, Victoria, 3168, Australia
| | - N Tran
- RMIT University, School of Science, Melbourne, Victoria, 3000, Australia
| | - T Song
- RMIT University, School of Engineering, Melbourne, Victoria, 3000, Australia
| | - D Liang
- CSIRO, Manufacturing, Clayton, Victoria, 3168, Australia
| | - M Qian
- RMIT University, School of Engineering, Melbourne, Victoria, 3000, Australia.
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Abstract
Assessment of bacterial dye release following exposure to antimicrobial peptides (AMPs) provides a detailed understanding regarding their interaction with the inner and outer membrane of bacteria, and the leak of bacterial intracellular materials. This underpins the overall antimicrobial mechanism of these membrane-active peptides. DiSC3(5) is a membrane potential sensitive dye and can characterize the changes in bacterial membrane potential following exposure to AMPs (see Note 1). SYTOX Green is a nucleic acid stain that enters the cell upon loss of membrane integrity after exposure to AMPs and binds to DNA. SYTO9 is another nucleic acid stain, whereas propidium iodide (PI) is a fluorescent intercalating agent that can be used to stain cells and nucleic acids. Both of these stains are widely used to monitor the viability of bacteria following exposure to AMPs. This chapter describes the methods of using these as bacterial dye release experiments for assessment of the antimicrobial mechanism of AMPs.
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Affiliation(s)
- Srikanth Dumpati
- Optometry and Vision Science Research Group, Optometry School, Aston University, Birmingham, UK
| | - Debarun Dutta
- Optometry and Vision Science Research Group, Optometry School, Aston University, Birmingham, UK.
- School of Optometry and Vision Science, University of New South Wales, Kensington, NSW, Australia.
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25
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Ye X, Yu D, Liao Y, Si Y, Yu J, Yin X, Ding B. Copper hydroxide nanosheets-assembled nanofibrous membranes for anti-biofouling water disinfection. J Colloid Interface Sci 2021; 611:1-8. [PMID: 34923292 DOI: 10.1016/j.jcis.2021.11.132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 11/15/2021] [Accepted: 11/21/2021] [Indexed: 01/24/2023]
Abstract
Copper hydroxide (Cu(OH)2) has been elected as a newly-emerging green disinfectant to deal with membrane biofouling in the treatment of bacteria-contaminated water; however, the decoration strategy of it with the granular form on membrane substrates limits the practical application. Here a novel surface-confined methodology was proposed for preparing freestanding Cu(OH)2 nanosheet-assembled nanofibrous membranes (CNNMs) with the anti-biofouling property via the in-suit coprecipitation and heat-induced growth method. The vertically aligned Cu(OH)2 nanosheets were in-suit rooted on the surface of the nanofiber scaffold with high binding fastness. The acquired CNNMs possess comprehensive performances of high porosity, prominent mechanical strength, fatigue resistance, and superior bactericidal efficiency of 99.999%, which endowed the CNNMs ultrahigh filtration fluxes (24000 L m-2 h-1) and durability to disinfect bacteria-containing water effectively. This facile strategy may throw light on manufacturing novel inorganic nanosheet-rooted nanofibrous membranes for water disinfection and public health.
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Affiliation(s)
- Xianhong Ye
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, Shanghai 201620, China
| | - Dingming Yu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, Shanghai 201620, China
| | - Yalong Liao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, Shanghai 201620, China
| | - Yang Si
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, Shanghai 201620, China; Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China.
| | - Jianyong Yu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, Shanghai 201620, China; Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China.
| | - Xia Yin
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, Shanghai 201620, China.
| | - Bin Ding
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, Shanghai 201620, China; Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China
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26
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Siddiqui R, Shah RA, Akbar N, Khamis M, Ibrahim T, Abouleish MY, Khan NA. Antibacterial effects of octadecyl trimethylammonium micelle-clay complex against bacterial eye pathogens: potential as a contact lens disinfectant. Int Ophthalmol 2021; 42:939-944. [PMID: 34611769 DOI: 10.1007/s10792-021-02075-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Accepted: 09/24/2021] [Indexed: 10/20/2022]
Abstract
AIM In this study, we utilized a micelle-clay complex composed of the surfactant octadecyltrimethylammonium bromide and montmorillonite clay and evaluated its antibacterial effects. METHODS Using Pseudomonas aeruginosa, Staphylococcus epidermidis, and Micrococcus luteus, bactericidal assays were performed to determine the effects of ODTMA-clay complex on the viability of bacterial pathogen at various doses and different intervals of time. Cytotoxicity assays were performed to investigate ODTMA-clay complex effects on human cells, as determined by release of intracellular lactate dehydrogenase. RESULTS The results revealed that ODTMA-clay complex abolished bacterial viability at 100 μg/mL within 45 min against P. aeruginosa, S. epidermidis, and M. luteus. Cytotoxicity assays revealed that ODTMA-clay complex exhibited minimal toxicity of the human cells. CONCLUSION Rapid and potent antibacterial effects of ODTMA micelle-clay complex were observed in vitro; however, research is needed to determine precise formulation of contact lens disinfectants comprising ODTMA micelle-clay complex. Additionally, studies should be conducted using in vivo models of keratitis, progressing to pre-clinical and clinical trials. ODTMA micelle-clay complex is an ideal candidate to be incorporated in a novel contact lens disinfectant given the cost-effectiveness and ease of application and can be incorporated as an effective preventative strategy.
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Affiliation(s)
- Ruqaiyyah Siddiqui
- College of Arts and Sciences, American University of Sharjah, University City, Sharjah, United Arab Emirates
| | - Rida Arshad Shah
- College of Arts and Sciences, American University of Sharjah, University City, Sharjah, United Arab Emirates
| | - Noor Akbar
- College of Arts and Sciences, American University of Sharjah, University City, Sharjah, United Arab Emirates
| | - Mustafa Khamis
- College of Arts and Sciences, American University of Sharjah, University City, Sharjah, United Arab Emirates
| | - Taleb Ibrahim
- Department of Chemical Engineering, College of Engineering, American University of Sharjah, University City, Sharjah, United Arab Emirates
| | - Mohamed Yehia Abouleish
- College of Arts and Sciences, American University of Sharjah, University City, Sharjah, United Arab Emirates
| | - Naveed Ahmed Khan
- Department of Clinical Sciences, College of Medicine, University of Sharjah, PO Box 27272, University City, Sharjah, United Arab Emirates.
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Narayanan M, Gopi A, Natarajan D, Kandasamy S, Saravanan M, El Askary A, Elfasakhany A, Pugazhendhi A. Hepato and nephroprotective activity of methanol extract of Hygrophila spinosa and its antibacterial potential against multidrug resistant Pandoraea sputorum. Environ Res 2021; 201:111594. [PMID: 34186080 DOI: 10.1016/j.envres.2021.111594] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 06/11/2021] [Accepted: 06/19/2021] [Indexed: 06/13/2023]
Abstract
This research was aimed to evaluate the phytochemical profile, bactericidal activity of Hygrophila spinosa against multidrug resistant Pandoraea sputorum and assess their antioxidant competence against various radicals and studied their hepatoprotective and nephroprotective activity on HepG2 and HEK 293 cell line. The results showed that the methanol extract has various phytochemical components with reasonable quantity. Fortunately, the multidrug-resistant P. sputorum was sensitive (22.8 ± 0.2 mm of the zone of inhibition) at 15 mg mL-1 concentration of methanol extract. The higher concentration of phenolic and other phytochemical components, showed significant antioxidant activity against ferric, DPPH, hydroxyl, and ABTS radicals, with IC50 values of 71.09, 64.333, 91.157, and 104.931 g mL-1, respectively. Surprisingly, the methanol extract possesses hepato and nephroprotective activity against CCl4 and cisplatin-induced cytotoxicity on HepG2 and HEK 293 cell lines, respectively. It maintains the cell viability as up to 90.48% and 90.35% of HepG2 and EK 293 cell line at the concentration of 20 μg mL-1. The FTIR analysis states that the methanol extract possesses a significant functional group responsible for these multi-potential activities. These results suggest that, the methanol extract of H. spinosa might contain the most significant bioactive components with outstanding medicinal properties.
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Affiliation(s)
- Mathiyazhagan Narayanan
- PG and Research Centre in Biotechnology, MGR College, Adhiyamaan Educational Research Institute, Hosur, Tamil Nadu, India
| | - A Gopi
- PG and Research Centre in Biotechnology, MGR College, Adhiyamaan Educational Research Institute, Hosur, Tamil Nadu, India
| | - Devarajan Natarajan
- Natural Drug Research Laboratory, Department of Biotechnology, Periyar University, Salem, Tamil Nadu, India
| | | | - Mythili Saravanan
- PG and Research Department of Biotechnology, Hindusthan College of Arts and Science, Coimbatore, 641 028, Tamil Nadu, India
| | - Ahmad El Askary
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, P.O.Box 11099, Taif, 21944, Saudi Arabia
| | - Ashraf Elfasakhany
- Mechanical Engineering Department, College of Engineering, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia
| | - Arivalagan Pugazhendhi
- School of Renewable Energy, Maejo University, Chiang Mai, 50290, Thailand; College of Medical and Health Science, Asia University, Taichung, Taiwan.
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28
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Ali M, Ijaz M, Ikram M, Ul-Hamid A, Avais M, Anjum AA. Biogenic Synthesis, Characterization and Antibacterial Potential Evaluation of Copper Oxide Nanoparticles Against Escherichia coli. Nanoscale Res Lett 2021; 16:148. [PMID: 34542713 PMCID: PMC8452814 DOI: 10.1186/s11671-021-03605-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 09/12/2021] [Indexed: 05/09/2023]
Abstract
The development of resistance against antibiotics used to treat bacterial infections along with the prevalence of medication residues presents significant public health problems globally. Antibiotic-resistant germs result in infections that are difficult or impossible to treat. Decreasing antibiotic effectiveness calls for rapid development of alternative antimicrobials. In this respect, nanoparticles (NPs) of copper oxide (CuO) manifest a latent and flexible inorganic nanostructure with noteworthy antimicrobial impact. Green synthesis of CuO NPs was performed in the current study, which was then doped with varying amounts of ginger (Zingiber officinale, ZO) and garlic (Allium sativum, AS) extracts. In low and high doses, the synthesized compound was used to measure the antimicrobial effectiveness against pathogenic Escherichia coli. The present research successfully demonstrated a renewable, eco-friendly synthesis technique with natural materials that is equally applicable to other green metal oxide NPs.
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Affiliation(s)
- Mohsin Ali
- Department of Veterinary Medicine, University of Veterinary and Animal Sciences, Lahore, Punjab, 54000, Pakistan
| | - Muhammad Ijaz
- Department of Veterinary Medicine, University of Veterinary and Animal Sciences, Lahore, Punjab, 54000, Pakistan.
| | - Muhammad Ikram
- Solar Cell Applications Research Lab, Department of Physics, Government College University Lahore, Lahore, Punjab, 54000, Pakistan.
| | - Anwar Ul-Hamid
- Core Research Facilities, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | - Muhammad Avais
- Department of Veterinary Medicine, University of Veterinary and Animal Sciences, Lahore, Punjab, 54000, Pakistan
| | - Aftab Ahmad Anjum
- Department of Veterinary Medicine, University of Veterinary and Animal Sciences, Lahore, Punjab, 54000, Pakistan
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29
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Li J, Li Y, Wu H, Naraginti S, Wu Y. Facile synthesis of ZnO nanoparticles by Actinidia deliciosa fruit peel extract: Bactericidal, anticancer and detoxification properties. Environ Res 2021; 200:111433. [PMID: 34090889 DOI: 10.1016/j.envres.2021.111433] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 05/18/2021] [Accepted: 05/21/2021] [Indexed: 06/12/2023]
Abstract
Synthesis of nanoparticles by eco-friendly method pulled an extensive concern worldwide due its biocompatibility and wide range of applications as catalysts, microbicidal agents, cancer treatment, sensors etc. Though different chemical methods available for preparation of ZnO nanoparticles, synthesis by utilizing plant material is an excellent substitute and green method as well. The present study describes preparation of ZnO nanoparticles by low-cost green synthetic way using Actinidia deliciosa (kiwi) fruit peel extract and its excellent biological and catalytic properties. The synthesized nanoparticles were well characterized by UV visible spectroscopy, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), Transmission electron microscopy (TEM) and Energy-dispersive X-ray spectroscopy (EDAX). The bactericidal activity of the ZnO nanoparticles was determined by using Staphylococcus aureus (S. aureus), while mechanism of cell death was studied by SEM images. Superior anticancer activity was also observed in inhibiting the colon cancer cells (HCT116) by the ZnO nanoparticles. In addition, ZnO nanoparticles showed efficient photocatalytic activity towards degradation of p-bromophenol, about 96.3% within 120 min. Furthermore, phytotoxicity of the intermediate products was analyzed using Vigna radiata (V. radiata) as a model plant. About 8.0% of germination index (GI) was observed in pure p-BP while it increased to 82.3%, and exhibited that the detoxification of p-BP was attained after 120 min of degradation. Thus, the present study demonstrates ZnO nanoparticles prepared from simple, rapid, inexpensive, eco-friendly and efficient green method gives alternative root for biomedicine and wastewater treatment technologies.
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Affiliation(s)
- Jie Li
- Ministry of Education Key Laboratory of Integrated Regulations and Resource Department on Shallow Lakes, College of Environment, Hohai University, Nanjing, 210098, China
| | - Yi Li
- Ministry of Education Key Laboratory of Integrated Regulations and Resource Department on Shallow Lakes, College of Environment, Hohai University, Nanjing, 210098, China.
| | - Haisuo Wu
- Jiangsu Academy of Environmental Industry and Technology Corp., Nanjing, 210019, China
| | - Saraschandra Naraginti
- School of Biological and Chemical Engineering, Anhui Polytechnic University, Wuhu, 241000, China
| | - Yunbo Wu
- Jiangsu Academy of Environmental Industry and Technology Corp., Nanjing, 210019, China
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Ding M, Zhao W, Song LJ, Luan SF. Stimuli-responsive nanocarriers for bacterial biofilm treatment. Rare Metals 2021; 41:482-498. [PMID: 34366603 PMCID: PMC8333162 DOI: 10.1007/s12598-021-01802-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/17/2021] [Accepted: 05/19/2021] [Indexed: 06/01/2023]
Abstract
ABSTRACT Bacterial biofilm infections have been threatening the human's life and health globally for a long time because they typically cause chronic and persistent infections. Traditional antibiotic therapies can hardly eradicate biofilms in many cases, as biofilms always form a robust fortress for pathogens inside, inhibiting the penetration of drugs. To address the issues, many novel drug carriers emerged as promising strategies for biofilm treatment. Among them, stimuli-responsive nanocarriers have attracted much attentions for their intriguing physicochemical properties, such as tunable size, shape and surface chemistry, especially smart drug release characteristic. Based on the microenvironmental difference between biofilm infection sites and normal tissue, many stimuli, such as bacterial products accumulating in biofilms (enzymes, glutathione, etc.), lower pH and higher H2O2 levels, have been employed and proved in favor of "on-demand" drug release for biofilm elimination. Additionally, external stimuli including light, heat, microwave and magnetic fields are also able to control the drug releasing behavior artificially. In this review, we summarized recent advances in stimuli-responsive nanocarriers for combating biofilm infections, and mainly, focusing on the different stimuli that trigger the drug release. 摘要 , , 。 , , 。 , , 。 , -, , , , 。 , , (, ), pHH2O2, ""。 , , , , 。 , , 。.
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Affiliation(s)
- Meng Ding
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese of Academy, Changchun, 130022 China
- College of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026 China
| | - Wei Zhao
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese of Academy, Changchun, 130022 China
- School of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005 China
| | - Ling-Jie Song
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese of Academy, Changchun, 130022 China
| | - Shi-Fang Luan
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese of Academy, Changchun, 130022 China
- National Engineering Laboratory of Medical Implantable Devices, Key Laboratory for Medical Implantable Devices of Shandong Province, WEGO Holding Company Limited, Weihai, 264210 China
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Park SK, Jo DM, Kang MG, Khan F, Hong SD, Kim CY, Kim YM, Ryu UC. Bactericidal effect of ultraviolet C light-emitting diodes: Optimization of efficacy toward foodborne pathogens in water. J Photochem Photobiol B 2021; 222:112277. [PMID: 34364078 DOI: 10.1016/j.jphotobiol.2021.112277] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 06/22/2021] [Accepted: 07/27/2021] [Indexed: 11/26/2022]
Abstract
The elimination of bacterial pathogens from water using ultraviolet C light-emitting diodes (UVC-LEDs) is a critical technology in terms of hygiene and sanitation. This technology has several advantages, such as low energy consumption, no heating requirements, and high effectiveness. Although several studies have reported the bactericidal effect of UVC-LEDs, little information is available on their bactericidal effect on water reservoirs contaminated with microorganisms. Therefore, the aim of this study was to optimize the bactericidal effects of UVC-LED irradiation, particularly at a wavelength of 278 nm, against major foodborne gram-positive and gram-negative pathogenic bacteria, such as Escherichia coli, Staphylococcus aureus, Bacillus cereus, Salmonella Typhimurium, and Listeria monocytogenes. The efficiency of the bactericidal effect of UVC-LED irradiation was determined based on three variables: exposure time (A, 0-60 min), stirring speed (B, 0-100 rpm), and volume of water (C, 400-1200 mL). To optimize the conditions, the operation of the designed model and results analysis were carried out using Box-Behnken design (BBD) and response surface method (RSM). The final conditions optimized for an effective bactericidal activity included a 60 min exposure time, a 100 rpm stirring speed, and 400 mL of liquid volume. Furthermore, the validation of the optimized model using the predicted values was calculated by the program, which was conducted by matching the actual values within standard deviations. The present study revealed that the optimization of a UVC-LED irradiation model is a promising approach for effectively controlling the contamination of water reservoirs by bacterial pathogens.
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Affiliation(s)
- Seul-Ki Park
- Institute of Food Science, Pukyong National University, Busan 48513, Republic of Korea
| | - Du-Min Jo
- Department of Food Science and Technology, Pukyong National University, Busan 48513, Republic of Korea
| | - Min-Gyun Kang
- Department of Food Science and Technology, Pukyong National University, Busan 48513, Republic of Korea
| | - Fazlurrahman Khan
- Research Center for Marine Integrated Bionics Technology, Pukyong National University, Busan 48513, Republic of Korea
| | - Sung Doo Hong
- ESN company, 405 Tongmyong Industry-Cooperation Bldg, Busan 48520, Republic of Korea
| | - Chang Youl Kim
- ESN company, 405 Tongmyong Industry-Cooperation Bldg, Busan 48520, Republic of Korea
| | - Young-Mog Kim
- Institute of Food Science, Pukyong National University, Busan 48513, Republic of Korea; Department of Food Science and Technology, Pukyong National University, Busan 48513, Republic of Korea; Research Center for Marine Integrated Bionics Technology, Pukyong National University, Busan 48513, Republic of Korea
| | - Uh-Chan Ryu
- Interdisciplinary Program of LED and Solid-State Lighting Engineering, Pukyong National University, Busan 48513, Republic of Korea.
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Raju SV, Sarkar P, Pasupuleti M, Saraswathi NT, Arasu MV, Al-Dhabi NA, Esmail GA, Arshad A, Arockiaraj J. Pharmacological importance of TG12 from tachykinin and its toxicological behavior against multidrug-resistant bacteria Klebsiella pneumonia. Comp Biochem Physiol C Toxicol Pharmacol 2021; 245:108974. [PMID: 33465517 DOI: 10.1016/j.cbpc.2021.108974] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 12/21/2020] [Accepted: 01/04/2021] [Indexed: 12/11/2022]
Abstract
Development of antimicrobial drugs against multidrug-resistant (MDR) bacteria is a great focus in recent years. TG12, a short peptide molecule used in this study was screened from tachykinin (Tac) protein of an established teleost Channa striatus (Cs) transcriptome. Tachykinin cDNA has 345 coding sequence, that denotes a protein contained 115 amino acids; in which a short peptide (TG12) was identified at 83-94. Tachykinin mRNA upregulated in C. striatus treated with Aeromonas hydrophila and Escherichia coli lipopolysaccharide (LPS). The mRNA up-regulation was studied using real-time PCR. The up-regulation tachykinin mRNA pattern confirmed the immune involvement of tachykinin in C. striatus during infection. Further, the identified peptide, TG12 was synthesized and its toxicity was demonstrated in hemolytic and cytotoxic assays using human erythrocytes and human dermal fibroblast cells, respectively. The toxicity study exhibited that the toxicity of TG12 was similar to negative control, phosphate buffer saline (PBS). Moreover, the antibiogram of TG12 was active against Klebsiella pneumonia ATCC 27736, a major MDR bacterial pathogen. Further, the antimicrobial activity of TG12 against pathogenic bacteria was screened using minimum inhibitory concentration (MIC) and anti-biofilm assays, altogether TG12 showed potential activity against K. pneumonia. Fluorescence assisted cell sorter flow cytometer analysis (FACS) and field emission scanning electron microscopy (FESEM) was carried on TG12 with K. pneumonia; the results showed that TG12 significantly reduced K. pneumonia viability as well as TG12 disrupt its membrane. In conclusion, TG12 of CsTac is potentially involved in the antibacterial immune mechanisms, which has a prospectus efficiency in pharma industry against MDR strains, especially K. pneumonia.
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Affiliation(s)
- Stefi V Raju
- SRM Research Institute, SRM Institute of Science and Technology, Kattankulathur, 603 203 Chennai, Tamil Nadu, India
| | - Purabi Sarkar
- SRM Research Institute, SRM Institute of Science and Technology, Kattankulathur, 603 203 Chennai, Tamil Nadu, India
| | - Mukesh Pasupuleti
- Lab PCN 206, Microbiology Division, CSIR-Central Drug Research Institute, B.S. 10/1, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226 031, Uttar Pradesh, India
| | - N T Saraswathi
- Molecular Biophysics Lab, School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur 613 401, Tamil Nadu, India
| | - Mariadhas Valan Arasu
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Naif Abdullah Al-Dhabi
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Galal Ali Esmail
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Aziz Arshad
- International Institute of Aquaculture and Aquatic Sciences (I-AQUAS), Universiti Putra Malaysia, 71050 Port Dickson, Negeri Sembilan, Malaysia; Department of Aquaculture, Faculty of Agriculture, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Jesu Arockiaraj
- SRM Research Institute, SRM Institute of Science and Technology, Kattankulathur, 603 203 Chennai, Tamil Nadu, India.
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Nathan VK, Rani ME. Natural dye from Caesalpinia sappan L. heartwood for eco-friendly coloring of recycled paper based packing material and its in silico toxicity analysis. Environ Sci Pollut Res Int 2021; 28:28713-28719. [PMID: 33543441 DOI: 10.1007/s11356-020-11827-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 11/23/2020] [Indexed: 06/12/2023]
Abstract
The uses of natural dyes are getting popularized due to the increased awareness regarding the toxicity of many chemical colorants. The chemical colorants are being replaced by the natural colorants for the various industrial applications. The plant-based natural colorants are considered eco-friendly and toxic free. In the present study, we report a natural dye from the heartwood of Caesalpinia sappan suitable for paper based packing materials. This forms the first report on the study of natural dye obtained from the heartwood of C. sappan on paper material. The extracted dye had a good photostability and able to make imprints on recycled paper bags. Moreover, a significant inhibition of bacterial growth was observed at a higher dye concentration of 100 μg mL-1 against P. aeruginosa which was higher than the standard antibiotics. Growth inhibition was also observed in case of B. subtilis (22 ± 0.17 mm) and K. pneumonia (21 ± 0.53 mm) at 100 μg mL-1. The dye could be used in making medicated packing materials and have many other bio-potential which was validated through in silico toxicity analysis. The application of such natural dyes in paper material value addition will help in a cleaner and sustainable process during paper recycling.
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Affiliation(s)
- Vinod Kumar Nathan
- School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, Tamil Nadu, 613401, India.
- Department of Botany and Microbiology, Lady Doak College, Madurai, Tamil Nadu, 625 002, India.
| | - Mary Esther Rani
- Department of Botany and Microbiology, Lady Doak College, Madurai, Tamil Nadu, 625 002, India
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Yu J, Zhang F, Zhang J, Han Q, Song L, Meng X. Effect of photodynamic treatments on quality and antioxidant properties of fresh-cut potatoes. Food Chem 2021; 362:130224. [PMID: 34098439 DOI: 10.1016/j.foodchem.2021.130224] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 02/05/2021] [Accepted: 05/25/2021] [Indexed: 11/18/2022]
Abstract
This study evaluated the feasibility of curcumin based photodynamic sterilization technology (PDT) applied to fresh-cut potato slices. Potato samples with 30 μmol L-1 curcumin solution were exposed to 420 nm light emitting diodes (LED) at a total dose of 0.7 kJ cm-2. Results showed that PDT inactivated 2.43 log CFU mL-1 of Escherichia coli (BL 21) and 3.18 log CFU mL-1 of Staphylococcus aureus and maintained the color, texture, weight as well as total solid content of treated potatoes. Additionally, loss of phenols and flavonoids was significantly prevented, increasing the total antioxidant capacity. This was attributed to changes in enzyme activity that PDT decreased the activity of polyphenol oxidase (PPO) and peroxidase (POD) by 59.7% and 47.8% and increased the activity of phenylalanine ammonia-lyase (PAL). Therefore, curcumin-based PDT has the potential to maintain the commercial quality of producing and achieving microbiological safety.
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Affiliation(s)
- Jinshen Yu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Fang Zhang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Jing Zhang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Qiming Han
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Lili Song
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Xianghong Meng
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
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Ciumac D, Gong H, Campbell RA, Campana M, Xu H, Lu JR. Structural elucidation upon binding of antimicrobial peptides into binary mixed lipid monolayers mimicking bacterial membranes. J Colloid Interface Sci 2021; 598:193-205. [PMID: 33901846 DOI: 10.1016/j.jcis.2021.04.037] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 04/07/2021] [Accepted: 04/09/2021] [Indexed: 11/28/2022]
Abstract
HYPOTHESIS Antimicrobial peptides (AMPs) kill microorganisms by causing structural damage to bacterial membranes. Different microorganisms often require a different type and concentration of an AMP to achieve full microbial killing. We hypothesise that the difference is caused by different membrane structure and composition. EXPERIMENTS Given the complexities of bacterial membranes, we have used monolayers of the binary DPPG/TMCL mixture to mimic the cytoplasmic membrane of Gram-positive bacteria and the binary DPPG/DPPE mixture to mimic the cytoplasmic membrane of Gram-negative bacteria, where DPPG, TMCL and DPPE stand for 1,2-dipalmitoyl-sn-glycero-3-phospho-(1'-rac-glycerol), 1',3'-bis[1,2-dimyristoyl-sn-glycero-3-phospho]-sn-glycerol, and 1,2-dipalmitoyl-sn-glycero-3-phosphoethanolamine, respectively. A Langmuir trough was specially designed to control the spread lipid monolayers and facilitate neutron reflectivity measurements. FINDINGS Surface pressure-area isotherm analysis revealed that all binary lipid systems mix non-ideally, but mixing is thermodynamically favoured. An increase in the surface pressure encourages demixing, resulting in phase separation and formation of clusters. Neutron reflectivity measurements were undertaken to study the binding of an antimicrobial peptide G(IIKK)4-I-NH2 (G4) to the binary DPPG/TMCL and DPPG/DPPE monolayer mixtures at the molar ratios of 6/4 and 3/7, respectively. The results revealed stronger binding and penetration of G4 to the DPPG/TMCL monolayer, indicating greater affinity of the antimicrobial peptide due to the electrostatic interaction and more extensive penetration into the more loosely packed lipid film. This work helps explain how AMPs attack different bacterial membranes, and the results are discussed in the context of other lipid models and antibacterial studies.
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Affiliation(s)
- Daniela Ciumac
- Biological Physics Laboratory, School of Physics and Astronomy, University of Manchester, Oxford Road, Schuster Building, Manchester M13 9PL, UK
| | - Haoning Gong
- Biological Physics Laboratory, School of Physics and Astronomy, University of Manchester, Oxford Road, Schuster Building, Manchester M13 9PL, UK
| | - Richard A Campbell
- Institut Laue-Langevin, 71 Avenue des Martyrs, CS-20156, 38042 Grenoble, France; Division of Pharmacy and Optometry, University of Manchester, Oxford Road, Stopford Building, Manchester M13 9PT, UK
| | - Mario Campana
- ISIS Neutron Facility, STFC, Chilton, Didcot OX11 0QZ, UK
| | - Hai Xu
- Centre for Bioengineering and Biotechnology, China University of Petroleum, Qingdao, China
| | - Jian R Lu
- Biological Physics Laboratory, School of Physics and Astronomy, University of Manchester, Oxford Road, Schuster Building, Manchester M13 9PL, UK.
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Devi P, Jindal N, Kim KH, Thakur A. Nanostructures derived from expired drugs and their applications toward sensing, security ink, and bactericidal material. Sci Total Environ 2021; 764:144260. [PMID: 33401040 DOI: 10.1016/j.scitotenv.2020.144260] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 11/27/2020] [Accepted: 11/28/2020] [Indexed: 06/12/2023]
Abstract
In this research, a facile and economical route is introduced for the transformation of pharmaceutical waste (i.e., expired medicines) into value-added fluorescent carbon quantum dots (pharmaceutically derived CQDs abbreviated as 'P-CQDs'). The synthesized P-CQDs were identified to have surface functionalities of -OH, C=O, and C=C with an average size of ~2-3 nm and a high quantum yield of 35.3%. The photoluminescence of P-CQDs recorded a maximum optical emission intensity at 2.8 eV (425 nm). The binding of Cu (II) ions by -COOH functionalities on the surface of P-CQDs led to its fluorescence quenching (turn-off) over a wide Cu (II) concentration range of 0.25-50 ppm. The P-CQDs exhibited the detection limit of 0.66 ppm (well below the WHO permissible limit of 2 ppm). The fluorescence intensity of the P-CQDs-Cu (II) complex was recovered from NaHCO3.Hence, their "off-on" behavior was also explored for security ink applications for information encryption and decryption. Moreover, the rich oxygenated groups on the surface of the P-CQDs were utilized for green synthesis of plasmonic Ag@P-CQDs nanostructures, which were also demonstrated to have enhanced potential as bactericidal materials (e.g., against both E. coli and S. aureus). The overall results of this study are demonstrated to help create new and diverse routes for converting expired drugs into value-added nanostructures.
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Affiliation(s)
- Pooja Devi
- CSIR-Central Scientific Instruments Organisation, Chandigarh 160030, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
| | - Neha Jindal
- CSIR-Central Scientific Instruments Organisation, Chandigarh 160030, India
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, Seoul 04763, Republic of Korea.
| | - Anupma Thakur
- CSIR-Central Scientific Instruments Organisation, Chandigarh 160030, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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Balusamy B, Senthamizhan A, Celebioglu A, Uyar T. Single nozzle electrospinning promoted hierarchical shell wall structured zinc oxide hollow tubes for water remediation. J Colloid Interface Sci 2021; 593:162-171. [PMID: 33744527 DOI: 10.1016/j.jcis.2021.02.089] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 02/15/2021] [Accepted: 02/21/2021] [Indexed: 11/25/2022]
Abstract
HYPOTHESIS Electrospun metal oxide hollow tubes are of great interest owing to their unique structural advantages compared to solid nanofibers. Although intensive research on preparation of hollow tubes have been devoted, formation of hierarchical shells remains a significant challenge. EXPERIMENTS Herein, we demonstrate the fabrication of highly uniform, reproducible and industrially feasible ZnO hollow tubes (ZHT) with two-level hierarchical shells via a simple and versatile single-nozzle electrospinning strategy coupled with subsequent controlled thermal treatment. FINDINGS The morphological investigation reveals that the hollow tubes built from nanostructures which has unique surface structure on their wall. The mechanism by which the composite fibers transferred to hollow tubes is primarily based on the evaporation rate of the polymeric template. Notably, tuning the heating rate from 5 °C to 50 °C/min possess adverse effect on formation of hollow tubes, thus subsequently produced ZnO nanoplates (ZNP). The comparative photocatalytic analysis emphasized that ZHT shows higher photocatalytic activity than ZNP. This finding has made an evident that the inherent abundant defects in the electrospun derived nanostructures are not only sufficient for improving the photocatalytic activity. Studies on bacterial growth inhibition showcased a superior bactericidal effect against Staphylococcus aureus and Escherichia coli implying its potentiality for disinfecting the bacteria from water.
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Affiliation(s)
- Brabu Balusamy
- Institute of Materials Science & Nanotechnology, UNAM-National Nanotechnology Research Center, Bilkent University, Ankara 06800, Turkey.
| | - Anitha Senthamizhan
- Institute of Materials Science & Nanotechnology, UNAM-National Nanotechnology Research Center, Bilkent University, Ankara 06800, Turkey.
| | - Asli Celebioglu
- Institute of Materials Science & Nanotechnology, UNAM-National Nanotechnology Research Center, Bilkent University, Ankara 06800, Turkey
| | - Tamer Uyar
- Institute of Materials Science & Nanotechnology, UNAM-National Nanotechnology Research Center, Bilkent University, Ankara 06800, Turkey; Department of Fiber Science & Apparel Design, College of Human Ecology, Cornell University, Ithaca, NY 14853, USA.
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Yang Y, Aqeel Ashraf M, Fakhri A, Kumar Gupta V, Zhang D. Facile synthesis of gold-silver/copper sulfide nanoparticles for the selective/sensitive detection of chromium, photochemical and bactericidal application. Spectrochim Acta A Mol Biomol Spectrosc 2021; 249:119324. [PMID: 33385971 DOI: 10.1016/j.saa.2020.119324] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 12/05/2020] [Accepted: 12/07/2020] [Indexed: 06/12/2023]
Abstract
In this project, bimetallic Au-Agnanoparticles/CuS nanoparticles were prepared via simple hydrothermal methods, which were used as highly efficient material for Cr (III) detection, photocatalytic, and biological process. The Au-Ag/CuS nanoparticles was studied via UV-visible spectroscopy, field-emission scanning electron microscopy, Dynamic light scattering, and X-ray diffraction. The zeta potential and effective size of Au-Ag/CuS nanoparticles was -32.1 mV and 25 nm respectively. The response time of Cr (III) ions interaction was 2 min. The lowest detection of Cr (III) by Au-Ag/CuS nanoparticles was 0.5 nM. The Au-Ag/CuS nano catalyst was applied to decomposition of drug under visible lamp irradiation. The photo degradation response of drug was 100.0% in 30 min irradiation. The particles exhibited excellent antibacterial activities.
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Affiliation(s)
- Yafeng Yang
- School of Forestry, Henan Agricultural University, Zhengzhou 450002, China
| | - Muhammad Aqeel Ashraf
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, China
| | - Ali Fakhri
- Young Researchers and Elites Club, Science and Research Branch, Islamic Azad University, Tehran, Iran; Department of Chemistry, Nano Smart Science Institute (NSSI), Tehran, Iran.
| | - Vinod Kumar Gupta
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Dangquan Zhang
- School of Forestry, Henan Agricultural University, Zhengzhou 450002, China.
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Elyass ME, Mahdi AA, Semeih AE, Eltaib FI, Attitalla IH. Exploratory investigation on the antibacterial effect of antimicrobial peptides of four mammalian plasmas. Microb Pathog 2021; 156:104839. [PMID: 33689814 DOI: 10.1016/j.micpath.2021.104839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 01/05/2021] [Accepted: 02/22/2021] [Indexed: 11/30/2022]
Abstract
Antimicrobial peptides (AMPs) are presently being revisited as promising potential antimicrobial combat agents. Acquisition of resistance to AMPs is very rare compared to conventional antibiotics as they kill microbes by direct disruption of cellular components including the microbial membrane and DNA. In this study four sources of mammalian plasma (human, bovine, caprine and ovine) were explored for presence and effectiveness of antimicrobial peptides by the spot-on-lawn method, followed by the agar well diffusion assay to confirm their antibacterial activity. This was followed by determination of their minimum inhibitory concentrations (MIC) and minimum bactericidal concentration (MBC) by the broth macrodilusion method. The MICs were compared to those produced by the antibiotics Ampicillin, Amoxicillin, Doxycycline and Metronidazole. All four plasma types exhibited antibacterial activity in their native form (plasmaN) or in presence of added pepsin (plasmap). The highest antibacterial activity was shown by ovine plasmap against Klebsiella pneumoniae (MIC at dilution of 1:128), while least activity (MIC at dilution of 1:2) was shown by bovine plasmap and ovine plasmaN against K. pneumoniae, ovine plasmaN against E. coli, and ovine plasmap against Staph. aureus. All plasma sources achieved bactericidal effect. Activity of ovine plasmaN against K. pneumoniae was higher than that due to Ampilcillin, Amoxicillin, Doxycycline or Metronidazole. The least antibacterial activity was achieved by Ampicillin against K. pneumoniae, E. coli and Bacillus subtilis. Metronidazole had no effect on any of the four bacteria tested. These results indicate that AMPs hold great promise as a valuable renewed tool in the control of pathogenic microbes.
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Affiliation(s)
- Mona E Elyass
- National Center for Research, Khartoum, Sudan; Omar Al-Mukhtar University, Faculty of Medical Technology, Box 919, Al-Bayda, Libya
| | - Ahmed A Mahdi
- Omar Al-Mukhtar University, Faculty of Medical Technology, Box 919, Al-Bayda, Libya
| | | | | | - Idrerss H Attitalla
- Omar Al-Mukhtar University, Faculty of Science, Department of Microbiology, Box 919, Al-Bayda, Libya; Omar Al-Mukhtar University, Faculty of Medical Technology, Box 919, Al-Bayda, Libya.
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40
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Wiegand SB, Traeger L, Nguyen HK, Rouillard KR, Fischbach A, Zadek F, Ichinose F, Schoenfisch MH, Carroll RW, Bloch DB, Zapol WM. Antimicrobial effects of nitric oxide in murine models of Klebsiella pneumonia. Redox Biol 2021; 39:101826. [PMID: 33352464 PMCID: PMC7729265 DOI: 10.1016/j.redox.2020.101826] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 12/01/2020] [Accepted: 12/02/2020] [Indexed: 11/02/2022] Open
Abstract
RATIONALE Inhalation of nitric oxide (NO) exerts selective pulmonary vasodilation. Nitric oxide also has an antimicrobial effect on a broad spectrum of pathogenic viruses, bacteria and fungi. OBJECTIVES The aim of this study was to investigate the effect of inhaled NO on bacterial burden and disease outcome in a murine model of Klebsiella pneumonia. METHODS Mice were infected with Klebsiella pneumoniae and inhaled either air alone, air mixed with constant levels of NO (at 80, 160, or 200 parts per million (ppm)) or air intermittently mixed with high dose NO (300 ppm). Forty-eight hours after airway inoculation, the number of viable bacteria in lung, spleen and blood was determined. The extent of infiltration of the lungs by inflammatory cells and the level of myeloperoxidase activity in the lungs were measured. Atomic force microscopy was used to investigate a possible mechanism by which nitric oxide exerts a bactericidal effect. MEASUREMENTS AND MAIN RESULTS Compared to control animals infected with K. pneumoniae and breathed air alone, intermittent breathing of NO (300 ppm) reduced viable bacterial counts in lung and spleen tissue. Inhaled NO reduced infection-induced lung inflammation and improved overall survival of mice. NO destroyed the cell wall of K. pneumoniae and killed multiple-drug resistant K. pneumoniae in-vitro. CONCLUSIONS Intermittent administration of high dose NO may be an effective approach to the treatment of pneumonia caused by K. pneumoniae.
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Affiliation(s)
- Steffen B Wiegand
- Anesthesia Center for Critical Care Research of the Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, 55 Fruit St, Boston, MA, 02114, USA
| | - Lisa Traeger
- Anesthesia Center for Critical Care Research of the Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, 55 Fruit St, Boston, MA, 02114, USA
| | - Huan K Nguyen
- Department of Chemistry, University of North Carolina at Chapel Hill, 125 South Rd, Chapel Hill, NC, 27514, USA
| | - Kaitlyn R Rouillard
- Department of Chemistry, University of North Carolina at Chapel Hill, 125 South Rd, Chapel Hill, NC, 27514, USA
| | - Anna Fischbach
- Anesthesia Center for Critical Care Research of the Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, 55 Fruit St, Boston, MA, 02114, USA
| | - Francesco Zadek
- Anesthesia Center for Critical Care Research of the Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, 55 Fruit St, Boston, MA, 02114, USA
| | - Fumito Ichinose
- Anesthesia Center for Critical Care Research of the Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, 55 Fruit St, Boston, MA, 02114, USA
| | - Mark H Schoenfisch
- Department of Chemistry, University of North Carolina at Chapel Hill, 125 South Rd, Chapel Hill, NC, 27514, USA
| | - Ryan W Carroll
- Department of Pediatric Critical Care Medicine, Massachusetts General Hospital, Harvard Medical School, 55 Fruit St, Boston, MA, 02114, USA
| | - Donald B Bloch
- Anesthesia Center for Critical Care Research of the Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, 55 Fruit St, Boston, MA, 02114, USA; Division of Rheumatology, Allergy and Immunology, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, 55 Fruit St, Boston, MA, 02114, USA
| | - Warren M Zapol
- Anesthesia Center for Critical Care Research of the Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, 55 Fruit St, Boston, MA, 02114, USA.
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Davison EK, McGowan JE, Li FF, Harper AD, Jeong JY, Mros S, Harbison-Price N, Van Zuylen EM, Knottenbelt MK, Heikal A, Ferguson SA, McConnell MA, Cook GM, Krittaphol W, Walker GF, Brimble MA, Rennison D. C-2 derivatized 8-sulfonamidoquinolines as antibacterial compounds. Bioorg Med Chem 2021; 29:115837. [PMID: 33223463 DOI: 10.1016/j.bmc.2020.115837] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 10/27/2020] [Accepted: 10/30/2020] [Indexed: 11/22/2022]
Abstract
A series of C-2 derivatized 8-sulfonamidoquinolines were evaluated for their antibacterial activity against the common mastitis causative pathogens Streptococcus uberis, Staphylococcus aureus and Escherichia coli, both in the presence and absence of supplementary zinc (50 µM ZnSO4). The vast majority of compounds tested were demonstrated to be significantly more active against S. uberis when in the presence of supplementary zinc (MICs as low as 0.125 µg/mL were observed in the presence of 50 µM ZnSO4). Compounds 5, 34-36, 39, 58, 79, 82, 94 and 95 were shown to display the greatest antibacterial activity against S. aureus (MIC ≤ 8 µg/mL; both in the presence and absence of supplementary zinc), while compounds 56, 58 and 66 were demonstrated to also exhibit activity against E. coli (MIC ≤ 16 µg/mL; under all conditions). Compounds 56, 58 and 66 were subsequently confirmed to be bactericidal against all three mastitis pathogens studied, with MBCs (≥3log10 CFU/mL reduction) of ≤ 32 µg/mL (in both the presence and absence of 50 µM ZnSO4). To validate the sanitizing activity of compounds 56, 58 and 66, a quantitative suspension disinfection (sanitizer) test was performed. Sanitizing activity (>5log10 CFU/mL reduction in 5 min) was observed against both S. uberis and E. coli at compound concentrations as low as 1 mg/mL (compounds 56, 58 and 66), and against S. aureus at 1 mg/mL (compound 58); thereby validating the potential of compounds 56, 58 and 66 to function as topical sanitizers designed explicitly for use in non-human applications.
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Sivaranjani M, Liu F, White AP. Synergistic activity of tetrasodium EDTA, ethanol and chlorhexidine hydrochloride against planktonic and biofilm cells of clinically relevant pathogens. J Glob Antimicrob Resist 2020; 24:148-157. [PMID: 33383260 DOI: 10.1016/j.jgar.2020.12.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 11/12/2020] [Accepted: 12/08/2020] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVES Biofilms associated with implantable medical devices and wounds are clinically relevant, often requiring repeated use of antibiotics without success. A search for non-antibiotic antimicrobial and antibiofilm solutions is warranted, in line with antimicrobial stewardship. Our study aimed to evaluate the broad-spectrum antimicrobial efficacy of tetrasodium EDTA, ethanol and chlorhexidine hydrochloride (HCl) alone and in combination against clinically relevant planktonic and biofilm cells of bacterial and fungal pathogens. METHODS MICs and MBCs were determined for tetrasodium EDTA, ethanol and chlorhexidine HCl against planktonic cells of test pathogens. The MBEC Assay® biofilm inoculator device was used to evaluate the biofilm eradication ability of test antimicrobials alone and in combination against clinically relevant pathogens. The checkerboard microbroth dilution assay was performed to analyze the synergism between test antimicrobials. RESULTS Against planktonic cells, the combination of tetrasodium EDTA with ethanol or chlorhexidine HCl resulted in synergistic to indifferent activity, with no antagonism observed. Against mature biofilms, all combinations were synergistic. The MBEC of each test antimicrobial was decreased from 4- to -64-fold when used in combination as compared to when agents were used alone. We optimised the concentration of antimicrobials to achieve rapid eradication of pre-formed biofilms. A triple combination of 3% tetrasodium EDTA, 20% ethanol and 2.5 μg/mL chlorhexidine HCl completely eradicated 48-h-old biofilms of all test strains within 2 h. CONCLUSION All three antimicrobial agents can be used together for prevention and treatment of biofilms and biofilm-related infections. The observed in vitro efficacy should be tested further through in vivo and clinical studies.
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Affiliation(s)
- Murugesan Sivaranjani
- Vaccine and Infectious Disease Organization, Saskatoon, Saskatchewan, Canada; Department of Biochemistry, Microbiology and Immunology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Fangning Liu
- Vaccine and Infectious Disease Organization, Saskatoon, Saskatchewan, Canada
| | - Aaron P White
- Vaccine and Infectious Disease Organization, Saskatoon, Saskatchewan, Canada; Department of Biochemistry, Microbiology and Immunology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
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Korrapati SB, Yedla P, Pillai GG, Mohammad F, Ch VRR, Bhamidipati P, Amanchy R, Syed R, Kamal A. In-silico driven design and development of spirobenzimidazo-quinazolines as potential DNA gyrase inhibitors. Biomed Pharmacother 2021; 134:111132. [PMID: 33360050 DOI: 10.1016/j.biopha.2020.111132] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 12/08/2020] [Accepted: 12/10/2020] [Indexed: 01/17/2023] Open
Abstract
DNA gyrase and Topoisomerase IV are promising antibacterial drug targets as they regulate bacterial DNA replication and topology. In a quest for novel DNA topoisomerase inhibitors, a multidisciplinary approach was adopted that involves computational prediction of binding sites and molecular modelling followed by green synthesis and biological evaluation of antibacterial activity of spirobenzimidazo quinazolines derivatives. Using basic quantum chemistry principles, we evaluated spirobenzimidazo quinazolines derivatives with their pharmacokinetic profiles. Based on the results of the aforesaid in-silico studies, we synthesized a series of titled compounds using green synthetic methodology that were validated as potential antimicrobial agents. Quantum chemoinformatics based predicted activity for the synthesized compounds 9b, 9c, and 9j was concomitant with biological evaluation of broadspectrum antibacterial activity. Biological evaluation revealed that inhibition of biofilm formation was due to their potential antibacterial activity. We believe that the novel spirobenzimidazo quinazolines have the potential to be alternatives to aminocoumarins and classical quinazolines upon detailed target specific biological studies.
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Seo JJ, Mandakhbayar N, Kang MS, Yoon JY, Lee NH, Ahn J, Lee HH, Lee JH, Kim HW. Antibacterial, proangiogenic, and osteopromotive nanoglass paste coordinates regenerative process following bacterial infection in hard tissue. Biomaterials 2020; 268:120593. [PMID: 33348262 DOI: 10.1016/j.biomaterials.2020.120593] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 11/23/2020] [Accepted: 12/06/2020] [Indexed: 12/12/2022]
Abstract
Bacterial infection raises serious concerns in tissue repair settings involved with implantable biomaterials, devastating the regenerative process and even life-threatening. When hard tissues are infected with bacteria (called 'osteomyelitis'), often the cases in open fracture or chronic inflammation, a complete restoration of regenerative capacity is significantly challenging even with highly-dosed antibiotics or surgical intervention. The implantable biomaterials are thus needed to be armored to fight bacteria then to relay regenerative events. To this end, here we propose a nanoglass paste made of ~200-nm-sized silicate-glass (with Ca, Cu) particles that are hardened in contact with aqueous medium and multiple-therapeutic, i.e., anti-bacterial, pro-angiogenic and osteopromotive. The nanoglass paste self-hardened via networks of precipitated nano-islands from leached ions to exhibit ultrahigh surface area (~300 m2/g), amenable to fill tunable defects with active biomolecular interactions. Also, the nanoglass paste could release multiple ions (silicate, calcium, and copper) at therapeutically relevant doses and sustainably (for days to weeks), implying possible roles in surrounding cells/tissues as a therapeutic-ions reservoir. The osteopromotive effects of nanoglass paste were evidenced by the stimulated osteogenic differentiation of MSCs. Also, the nanoglass paste promoted angiogenesis of endothelial cells in vitro and vasculature formation in vivo. Furthermore, the significant bactericidal effect of nanoglass paste, as assessed with E. coli and S. aureus, highlighted the role of copper played in elevating ROS level and destroying homeostasis, which salvaged tissue cells from co-cultivated bacteria contamination. When administered topically to rat tibia osteomyelitis defects, the nanoglass paste enhanced in vivo bone healing and fracture resistance. The developed nanoglass paste, given its self-setting property and the coordinated therapeutic actions, is considered to be a promising drug-free inorganic biomaterial platform for the regenerative therapy of bacteria-infected hard tissues.
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Affiliation(s)
- Jung Ju Seo
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, 31116, Republic of Korea; Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, 31116, Republic of Korea
| | - Nandin Mandakhbayar
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, 31116, Republic of Korea; Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, 31116, Republic of Korea; UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, 31116, Republic of Korea
| | - Min Sil Kang
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, 31116, Republic of Korea; Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, 31116, Republic of Korea
| | - Ji-Young Yoon
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, 31116, Republic of Korea; Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, 31116, Republic of Korea; UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, 31116, Republic of Korea
| | - Na-Hyun Lee
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, 31116, Republic of Korea; Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, 31116, Republic of Korea; UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, 31116, Republic of Korea
| | - Junyong Ahn
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, 31116, Republic of Korea; Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, 31116, Republic of Korea; Department of Biomaterials Science, College of Dentistry, Dankook University, Cheonan, 31116, Republic of Korea; UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, 31116, Republic of Korea
| | - Hae-Hyoung Lee
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, 31116, Republic of Korea; Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, 31116, Republic of Korea; Department of Biomaterials Science, College of Dentistry, Dankook University, Cheonan, 31116, Republic of Korea; UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, 31116, Republic of Korea
| | - Jung-Hwan Lee
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, 31116, Republic of Korea; Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, 31116, Republic of Korea; Department of Biomaterials Science, College of Dentistry, Dankook University, Cheonan, 31116, Republic of Korea; UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, 31116, Republic of Korea; Cell & Matter Institute, Dankook University, Cheonan, 31116, South Korea.
| | - Hae-Won Kim
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, 31116, Republic of Korea; Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, 31116, Republic of Korea; Department of Biomaterials Science, College of Dentistry, Dankook University, Cheonan, 31116, Republic of Korea; UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, 31116, Republic of Korea; Cell & Matter Institute, Dankook University, Cheonan, 31116, South Korea.
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Sapkota KP, Hassan MM, Shrestha S, Hanif MA, Islam MA, Akter J, Abbas HG, Hahn JR. Heterojunction formation between copper(II) oxide nanoparticles and single-walled carbon nanotubes to enhance antibacterial performance. Int J Pharm 2020; 590:119937. [PMID: 33011252 DOI: 10.1016/j.ijpharm.2020.119937] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 09/23/2020] [Accepted: 09/27/2020] [Indexed: 12/19/2022]
Abstract
We delineate the excellent bactericidal efficacy of stable heterojunction nanocomposites composed of single-walled carbon nanotubes (SWCNTs) and copper(II) oxide (CuO) synthesized via facile recrystallization and calcination. The bactericidal effectiveness of the fabricated nanocomposites was examined using the standard broth-dilution method and the growth-inhibition-zone analysis method, in which bacteria cultured in an incubator in tryptic soy broth medium were subjected to the prepared samples. The bactericidal activity of all of the as-synthesized samples is evident in both methods, displaying a substantial decrease in bacterial colonies and resulting in clear inhibition zones, respectively. Among the CuO-SWCNT nanocomposites, the sample subjected to calcination at 500 °C for 5 h was found to exhibit the best performance against Staphylococcus aureus and Escherichia coli, forming inhibition zones 182% and 162% larger than those formed by pure CuO, respectively.
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Affiliation(s)
- Kamal Prasad Sapkota
- Department of Chemistry, Research Institute of Physics and Chemistry, Jeonbuk National University, Jeonju 54896, South Korea; Department of Chemistry, Amrit Campus, Tribhuvan University, Kathmandu 44618, Nepal
| | - Md Mehedi Hassan
- Department of Biomedical Sciences and Institute for Medical Science, Jeonbuk National University, Jeonju 54907, South Korea
| | - Sita Shrestha
- Department of Bionanosystem Engineering, Graduate School, Jeonbuk National University, Jeonju 54896, South Korea
| | - Md Abu Hanif
- Department of Chemistry, Research Institute of Physics and Chemistry, Jeonbuk National University, Jeonju 54896, South Korea
| | - Md Akherul Islam
- Department of Chemistry, Research Institute of Physics and Chemistry, Jeonbuk National University, Jeonju 54896, South Korea
| | - Jeasmin Akter
- Department of Chemistry, Research Institute of Physics and Chemistry, Jeonbuk National University, Jeonju 54896, South Korea
| | - Hafiz Ghulam Abbas
- Department of Nanoscience and Nanotechnology, Jeonbuk National University, Jeonju 54896, South Korea
| | - Jae Ryang Hahn
- Department of Chemistry, Research Institute of Physics and Chemistry, Jeonbuk National University, Jeonju 54896, South Korea; Department of Nanoscience and Nanotechnology, Jeonbuk National University, Jeonju 54896, South Korea; Textile Engineering, Chemistry and Science, North Carolina State University, 2401 Research Dr., Raleigh, NC 27695-8301, USA
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Gomes CF, Gomes JH, da Silva EF. Bacteriostatic and bactericidal clays: an overview. Environ Geochem Health 2020; 42:3507-3527. [PMID: 32607701 DOI: 10.1007/s10653-020-00628-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 06/16/2020] [Indexed: 06/11/2023]
Abstract
This article aims to draw an overview on the actual knowledge on bacteriostatic and bactericidal natural clays. Particular emphasis is given to the role of clay itself, the action of reduced metals located either in the structure of clay minerals or external to them as constituents of associate minerals, and the definition of the mechanisms of action based on the achievements found in all available studies being carried out so far. The term bactericidal is herein used when a clay or a clay mineral kill the bacteria, whereas the term bacteriostatic is used when those minerals stop bacteria growth and replication. The second part of this article deals with experimental studies on bactericidal natural clay, experience and perspective for the preparation of bactericidal natural clays, interesting on the authors perspective and experience for the preparation of pathogens safe both therapeutic and cosmetic natural mud/natural peloid, and better yet of both therapeutic 87oooand cosmetic peloid itself and designed and engineered peloid. The authors also show how to convert non-antimicrobial clay into antimicrobial one, opening the way in the field of pelotherapy to the preparation of sanitary safe peloids addressed, for instance, to the treatment of rheumatic disabilities, as well as to the preparation of antimicrobial peloids and, in particular, of dermatological ointments, all able to fight infectious skin disorders.
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Affiliation(s)
- Celso Figueiredo Gomes
- GeoBioTec, Research Unit of FCT (Foundation for Science and Technology), University of Aveiro, 3800-193, Aveiro, Portugal
| | - Jorge Hamilton Gomes
- GeoBioTec, Research Unit of FCT (Foundation for Science and Technology), University of Aveiro, 3800-193, Aveiro, Portugal
| | - Eduardo Ferreira da Silva
- GeoBioTec, Research Unit of FCT (Foundation for Science and Technology), University of Aveiro, 3800-193, Aveiro, Portugal.
- Geosciences Department, University of Aveiro, 3800-193, Aveiro, Portugal.
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Wang C, Mu C, Lin W, Xiao H. Functional-modified polyurethanes for rendering surfaces antimicrobial: An overview. Adv Colloid Interface Sci 2020; 283:102235. [PMID: 32858408 DOI: 10.1016/j.cis.2020.102235] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 08/04/2020] [Accepted: 08/06/2020] [Indexed: 02/07/2023]
Abstract
Antimicrobial surfaces and coatings are rapidly emerging as primary components in functional modification of materials and play an important role in addressing the problems associated with biofouling and microbial infection. Polyurethane (PU) consisting of alternating soft and hard segments has been one of the most important coating materials that have been widely applied in many fields due to its versatile properties. This review attempts to provide insight into the recent advances in antimicrobial polyurethane coatings or surfaces. According to different classes of antimicrobial components along with their antimicrobial mechanism, the synthesis pathways are presented systematically herein to afford polyurethane with antimicrobial properties. Also, the challenges and opportunities of antimicrobial PU coatings and surfaces are also discussed. This review will be beneficial to the exploitation and the further studies of antimicrobial polyurethane materials for a variety of applications.
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Gaur VK, Tripathi V, Gupta P, Dhiman N, Regar RK, Gautam K, Srivastava JK, Patnaik S, Patel DK, Manickam N. Rhamnolipids from Planococcus spp. and their mechanism of action against pathogenic bacteria. Bioresour Technol 2020; 307:123206. [PMID: 32240926 DOI: 10.1016/j.biortech.2020.123206] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 03/12/2020] [Accepted: 03/14/2020] [Indexed: 06/11/2023]
Abstract
Two bacterial species with the ability to produce biosurfactants were isolated from a pesticide contaminated soil and identified as Planococcus rifietoensis IITR53 and Planococcus halotolerans IITR55. Formation of froth indicating the surfactant production was observed when grown in basal salt medium containing 2% glucose. The culture supernatant after 72 h showed reduction in surface tension from 72 N/m to 46 and 42 N/m for strain IITR53 and IITR55 with emulsification index of 51 and 54% respectively. The biosurfactant identified as rhamnolipid based on liquid chromatography-mass spectrometry analysis, was found to inhibit the growth of both gram- positive and negative pathogenic bacteria. Both the rhamnolipids at 40 mg/mL exhibited the release of extracellular DNA and protein content. Also at one third of the MIC, a significant generation of reactive oxygen species was recorded. These rhamnolipids effectively emulsified different vegetable oils suggesting their possible utilization as antimicrobial agent.
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Affiliation(s)
- Vivek Kumar Gaur
- Environmental Biotechnology Laboratory, Environmental Toxicology Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India; Amity Institute of Biotechnology, Amity University Uttar Pradesh, Lucknow Campus, Lucknow, India
| | - Varsha Tripathi
- Environmental Biotechnology Laboratory, Environmental Toxicology Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
| | - Pallavi Gupta
- Environmental Biotechnology Laboratory, Environmental Toxicology Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
| | - Nitesh Dhiman
- Water Analysis Laboratory, Nanomaterial Toxicology Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
| | - Raj Kumar Regar
- Environmental Biotechnology Laboratory, Environmental Toxicology Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
| | - Krishna Gautam
- Ecototoxicology Laboratotory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
| | | | - Satyakam Patnaik
- Water Analysis Laboratory, Nanomaterial Toxicology Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
| | - Devendra Kumar Patel
- Analytical Chemistry Laboratory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
| | - Natesan Manickam
- Environmental Biotechnology Laboratory, Environmental Toxicology Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India.
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Damar-Çelik D, Nørskov-Lauritsen N, Özbek-Çelik B. Comparative in vitro activities of meropenem in combination with colistin, levofloxacin, or chloramphenicol against Achromobacter xylosoxidans strains isolated from patients with cystic fibrosis. J Glob Antimicrob Resist 2020; 22:713-7. [PMID: 32534046 DOI: 10.1016/j.jgar.2020.06.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 05/25/2020] [Accepted: 06/01/2020] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVES Achromobacter xylosoxidans is an emerging pathogen in cystic fibrosis (CF). Relatively little is known about its clinical impact and optimal management. In the present study, the in vitro bactericidal activities of meropenem, either alone or in combination with colistin, levofloxacin, or chloramphenicol, were assessed using A. xylosoxidans strains isolated from CF patients. The synergistic interactions of these combinations were also investigated. METHODS Minimal inhibitory concentrations (MICs) were determined by microbroth dilution. Bactericidal and synergistic effects of the tested antibiotic combinations were assessed by using the time-kill curve technique. RESULTS Based on the time-kill curves, we found that meropenem-colistin combinations have bactericidal and synergistic activities for 24 h against A. xylosoxidans strains, both at 1 × MIC and 4 × MIC. Although synergistic interactions were seen with meropenem-levofloxacin combinations, no bactericidal interactions were observed. Additionally, the meropenem-chloramphenicol combinations were found to be neither bactericidal nor synergistic. No antagonism was observed with any combination tested. CONCLUSIONS This study's findings could have important implications for empirical or combination antimicrobial therapy with tested antibiotics.
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Limna Mol VP, Abdulaziz A, Sneha KG, Praveen PJ, Raveendran TV, Parameswaran PS. Inhibition of pathogenic Vibrio harveyi using calamenene, derived from the Indian gorgonian Subergorgia reticulata, and its synthetic analog. 3 Biotech 2020; 10:248. [PMID: 32411572 PMCID: PMC7214568 DOI: 10.1007/s13205-020-02241-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 05/02/2020] [Indexed: 10/24/2022] Open
Abstract
We report the synthesis and antimicrobial properties of a partially reduced dihydronathphthoquinone analogue of 2-methoxy, 5-acetoxy calamenene, extracted from Subergorgia reticulata. The growth of a pathogenic Vibrio harveyi strain was effectively controlled by the calamenene derivative 1 (Cala1) and its synthetic analog 2 (Cala2). Complete mortality of V. harveyi was observed with 2.5 and 0.5 µg mL-1 concentrations of Cala1 and Cala2, respectively. The metabolic assays demonstrated that Cala1 is a bacteriostatic agent while Cala2 showed bactericidal properties. It was confirmed that translocation of Cala2 into the cytoplasm does not induce any change to the integrity of the bacterial cell wall. The Cala2 induced damage to the genetic material of 70% of cells while genetic material of 91% of cells treated with Cala1 remained intact. The Cala2 is, therefore, proposed as a potential bactericidal compound against the aquaculture pathogen V. harveyi. The fact that the Cala2 exhibited minimal cytotoxicity to Artemia nauplii indicates its potential use as an antimicrobial agent for aquaculture operations.
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Affiliation(s)
- V. P. Limna Mol
- Council of Scientific and Industrial Research (CSIR)-National Institute of Oceanography (NIO), Regional Centre, Cochin, Kerala 682018 India
- Present Address: School of Ocean Science and Technology, Kerala University of Fisheries and Ocean Sciences (KUFOS), Panangad, Kerala 682506 India
| | - Anas Abdulaziz
- Council of Scientific and Industrial Research (CSIR)-National Institute of Oceanography (NIO), Regional Centre, Cochin, Kerala 682018 India
| | - K. G. Sneha
- Council of Scientific and Industrial Research (CSIR)-National Institute of Oceanography (NIO), Regional Centre, Cochin, Kerala 682018 India
| | - P. J. Praveen
- Council of Scientific and Industrial Research (CSIR)-National Institute of Oceanography (NIO), Regional Centre, Cochin, Kerala 682018 India
| | - T. V. Raveendran
- Council of Scientific and Industrial Research (CSIR)-National Institute of Oceanography (NIO), Regional Centre, Cochin, Kerala 682018 India
| | - P. S. Parameswaran
- Council of Scientific and Industrial Research (CSIR)-National Institute of Oceanography (NIO), Regional Centre, Cochin, Kerala 682018 India
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