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Song G, Li M, Zhou B, Qi H, Guo J. Gallium-based metal-organic frameworks with antibacterial and anti-inflammatory properties for oral health protection. Heliyon 2024; 10:e31788. [PMID: 38845911 PMCID: PMC11153188 DOI: 10.1016/j.heliyon.2024.e31788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 05/21/2024] [Accepted: 05/22/2024] [Indexed: 06/09/2024] Open
Abstract
The fascial space of the oral and maxillofacial region contains loose connective tissues, which possess weak anti-infection ability and are often prone to infection, leading to acute suppurative inflammation and sepsis through blood. Although antibiotic use can reduce the probability of bacterial infections, owing to the emergence of antibiotic-resistant bacteria, the search for new antimicrobial drugs is imminent. Herein, we report a metal-organic framework (MOF) antibacterial material designed and synthesized with gallium (Ga) as the central atom, which possesses significant antibacterial, anti-inflammatory, and antioxidant effects. Our data suggested that GA-based MOFs (Ga-MOFs; 1 μg/mL) could sufficiently kill Porphyromonas gingivalis, Streptococcus pyogenes, and Staphylococcus aureus. Ga-MOFs exhibited a bactericidal effect against these three pathogens by disrupting biofilm formation, exopolysaccharide production, and bacterial membrane integrity. In addition, we found that 1 μg/mL of Ga-MOFs was not cytotoxic to human oral epithelial cell (HOEC) lines and it significantly reduced the adhesion of the three pathogens to HOEC. Ga-MOFs protect macrophages from excessive oxidative stress by scavenging excess intracellular reactive oxygen species and upregulating antioxidant gene levels, thereby enhancing cellular antioxidant defense. In addition, Ga-MOFs can promote the transformation of macrophages from the proinflammatory phenotype to the anti-inflammatory phenotype, thereby protecting oral health. Herein, novel Ga-MOF materials were chemically synthesized for therapeutic applications in oral infections, which provides new ideas for the development of novel nonantibiotic drugs to accelerate patient recovery.
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Affiliation(s)
- Gongyuan Song
- Shijiazhuang Stomatology Hospital, Shijiazhuang, 050000, China
| | - Min Li
- Handan Stomatology Hospital, Handan, 056000, China
| | - Bing Zhou
- Cangzhou People's Hospital, Cangzhou, 061000, China
| | - Hongguang Qi
- Gucheng County Hospital of Hebei Provence, 253800, China
| | - Jie Guo
- Department of Stomatology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, 050000, China
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Tian C, Zhao N, Yang L, Lin F, Cai R, Zhang Y, Peng J, Guo G. The antibacterial activity and mechanism of a novel peptide MR-22 against multidrug-resistant Escherichia coli. Front Cell Infect Microbiol 2024; 14:1334378. [PMID: 38328670 PMCID: PMC10847306 DOI: 10.3389/fcimb.2024.1334378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 01/08/2024] [Indexed: 02/09/2024] Open
Abstract
Introduction Bacterial infections have become serious threats to human health, and the excessive use of antibiotics has led to the emergence of multidrug-resistant (MDR) bacteria. E. coli is a human bacterial pathogen, which can cause severe infectious. Antimicrobial peptides are considered the most promising alternative to traditional antibiotics. Materials and methods The minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC) and hemolytic activity were determined by the microdilution method. The antimicrobial kinetics of MR-22 against E. coli were studied by growth curves and time-killing curves. The cytotoxicity of MR-22 was detected by the CCK-8 assay. The antimicrobial activity of MR-22 in salt, serum, heat and trypsin was determined by the microdilution method. The antimicrobial mechanism of MR-22 against drug-resistant E. coli was studied by Scanning Electron Microscope, laser confocal microscopy, and Flow Cytometry. The in vivo antibacterial activity of MR-22 was evaluated by the mice model of peritonitis. Results and discussion In this study, MR-22 is a new antimicrobial peptide with good activity that has demonstrated against MDR E. coli. The antimicrobial activity of MR-22 exhibited stability under conditions of high temperature, 10% FBS, and Ca2+. However, a decline of the activity was observed in the presence of Na+, serum, and trypsin. MR-22 had no significant cytotoxicity or hemolysis in vitro. SEM and fluorescent images revealed that MR-22 could disrupt the integrity of cell membrane. DCFH-DA indicated that MR-22 increased the content of reactive oxygen species, while it decreased the content of intracellular ATP. In mice model of peritonitis, MR-22 exhibited potent antibacterial activity in vivo. These results indicated that MR-22 is a potential drug candidate against drug-resistant E. coli.
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Affiliation(s)
- Chunren Tian
- School of Basic Medical Sciences, The Key and Characteristic Laboratory of Modern Pathogen Biology, Guizhou Medical University, Guiyang, China
- Clinical Laboratory, Guiyang Hospital of Guizhou Aviation Industry Group, Guiyang, China
- Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China
| | - Na Zhao
- Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China
- Translational Medicine Research Center, Guizhou Medical University, Guiyang, China
| | - Longbing Yang
- School of Basic Medical Sciences, The Key and Characteristic Laboratory of Modern Pathogen Biology, Guizhou Medical University, Guiyang, China
| | - Fei Lin
- School of Basic Medical Sciences, The Key and Characteristic Laboratory of Modern Pathogen Biology, Guizhou Medical University, Guiyang, China
| | - Ruxia Cai
- School of Basic Medical Sciences, The Key and Characteristic Laboratory of Modern Pathogen Biology, Guizhou Medical University, Guiyang, China
| | - Yong Zhang
- School of Basic Medical Sciences, The Key and Characteristic Laboratory of Modern Pathogen Biology, Guizhou Medical University, Guiyang, China
| | - Jian Peng
- School of Basic Medical Sciences, The Key and Characteristic Laboratory of Modern Pathogen Biology, Guizhou Medical University, Guiyang, China
| | - Guo Guo
- School of Basic Medical Sciences, The Key and Characteristic Laboratory of Modern Pathogen Biology, Guizhou Medical University, Guiyang, China
- Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China
- Translational Medicine Research Center, Guizhou Medical University, Guiyang, China
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Wahab S, Salman A, Khan Z, Khan S, Krishnaraj C, Yun SI. Metallic Nanoparticles: A Promising Arsenal against Antimicrobial Resistance-Unraveling Mechanisms and Enhancing Medication Efficacy. Int J Mol Sci 2023; 24:14897. [PMID: 37834344 PMCID: PMC10573543 DOI: 10.3390/ijms241914897] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 09/25/2023] [Accepted: 10/03/2023] [Indexed: 10/15/2023] Open
Abstract
The misuse of antibiotics and antimycotics accelerates the emergence of antimicrobial resistance, prompting the need for novel strategies to combat this global issue. Metallic nanoparticles have emerged as effective tools for combating various resistant microbes. Numerous studies have highlighted their potential in addressing antibiotic-resistant fungi and bacterial strains. Understanding the mechanisms of action of these nanoparticles, including iron-oxide, gold, zinc oxide, and silver is a central focus of research within the life science community. Various hypotheses have been proposed regarding how nanoparticles exert their effects. Some suggest direct targeting of microbial cell membranes, while others emphasize the release of ions from nanoparticles. The most compelling proposed antimicrobial mechanism of nanoparticles involves oxidative damage caused by nanoparticles-generated reactive oxygen species. This review aims to consolidate knowledge, discuss the properties and mechanisms of action of metallic nanoparticles, and underscore their potential as alternatives to enhance the efficacy of existing medications against infections caused by antimicrobial-resistant pathogens.
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Affiliation(s)
- Shahid Wahab
- Department of Food Science and Technology, College of Agriculture and Life Sciences, Jeonbuk National University, Jeonju 54896, Republic of Korea; (S.W.); (C.K.)
- Department of Agricultural Convergence Technology, College of Agriculture and Life Science, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Alishba Salman
- Nanobiotechnology Laboratory, Department of Biotechnology University of Malakand, Dir Lower, Chakdara 18800, Khyber Pakhtunkhwa, Pakistan; (A.S.); (Z.K.); (S.K.)
| | - Zaryab Khan
- Nanobiotechnology Laboratory, Department of Biotechnology University of Malakand, Dir Lower, Chakdara 18800, Khyber Pakhtunkhwa, Pakistan; (A.S.); (Z.K.); (S.K.)
| | - Sadia Khan
- Nanobiotechnology Laboratory, Department of Biotechnology University of Malakand, Dir Lower, Chakdara 18800, Khyber Pakhtunkhwa, Pakistan; (A.S.); (Z.K.); (S.K.)
| | - Chandran Krishnaraj
- Department of Food Science and Technology, College of Agriculture and Life Sciences, Jeonbuk National University, Jeonju 54896, Republic of Korea; (S.W.); (C.K.)
- Department of Agricultural Convergence Technology, College of Agriculture and Life Science, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Soon-Il Yun
- Department of Food Science and Technology, College of Agriculture and Life Sciences, Jeonbuk National University, Jeonju 54896, Republic of Korea; (S.W.); (C.K.)
- Department of Agricultural Convergence Technology, College of Agriculture and Life Science, Jeonbuk National University, Jeonju 54896, Republic of Korea
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Zamyatnin AA. Redox Regulation of Protein Functioning. Biomolecules 2023; 13:1281. [PMID: 37759681 PMCID: PMC10527316 DOI: 10.3390/biom13091281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 08/22/2023] [Indexed: 09/29/2023] Open
Abstract
Reactive oxygen species (ROS) and their derivatives play a key role in signaling under normal and oxidative stress conditions in all aerobic living organisms [...].
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Affiliation(s)
- Andrey A. Zamyatnin
- Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, 119234 Moscow, Russia;
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Russia
- Research Center for Translational Medicine, Sirius University of Science and Technology, 354340 Sirius, Krasnodar Region, Russia
- Institute of Translational Medicine and Biotechnology, Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia
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Ng TK, Chu KO, Wang CC, Pang CP. Green Tea Catechins as Therapeutic Antioxidants for Glaucoma Treatment. Antioxidants (Basel) 2023; 12:1320. [PMID: 37507860 PMCID: PMC10376590 DOI: 10.3390/antiox12071320] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 06/02/2023] [Accepted: 06/09/2023] [Indexed: 07/30/2023] Open
Abstract
Glaucoma is the leading cause of irreversible blindness and visual impairment, affecting more than 80 million individuals worldwide. Oxidative stress and inflammation-induced neurodegenerative insults to retinal ganglion cells are the main pathogenesis of glaucoma. Retinal ganglion cells, the retinal neurons transmitting the visual signals to the visual cortex in the brain, have very limited regeneration or recovery capacity after damages. Apart from intraocular pressure-lowering treatments, there is still no clinically effective treatment to rescue the degeneration of retinal ganglion cells in glaucoma. Dietary antioxidants are easily accessible and can be applied as supplements assisting in the clinical treatments. Catechins, a chemical family of flavonoids, are the phenolic compounds found in many plants, especially in green tea. The anti-oxidative and anti-inflammatory properties of green tea catechins in vitro and in vivo have been well proven. They could be a potential treatment ameliorating retinal ganglion cell degeneration in glaucoma. In this review, the chemistry, pharmacokinetics, and therapeutic properties of green tea catechins were summarized. Research updates on the biological effects of green tea catechins in cellular and animal experimental glaucoma models were reviewed. In addition, clinical potentials of green tea catechins for glaucoma treatment were also highlighted.
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Affiliation(s)
- Tsz Kin Ng
- Joint Shantou International Eye Center of Shantou University and The Chinese University of Hong Kong, Shantou 515041, China
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong
| | - Kai On Chu
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong
- Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Hong Kong
| | - Chi Chiu Wang
- Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Hong Kong
| | - Chi Pui Pang
- Joint Shantou International Eye Center of Shantou University and The Chinese University of Hong Kong, Shantou 515041, China
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong
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Chinnasamy R, Chinnaperumal K, Venkatesan M, Jogikalmat K, Cherian T, Willie P, Malafaia G. Eco-friendly synthesis of Ag-NPs using Endostemon viscosus (Lamiaceae): Antibacterial, antioxidant, larvicidal, photocatalytic dye degradation activity and toxicity in zebrafish embryos. ENVIRONMENTAL RESEARCH 2023; 218:114946. [PMID: 36493805 DOI: 10.1016/j.envres.2022.114946] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 11/18/2022] [Accepted: 11/23/2022] [Indexed: 06/17/2023]
Abstract
Nanotechnology is a multidisciplinary area of study that has grown significantly in serving many functions and impacting human society. New fields of science have been facilitated by the clean, non-toxic, and biocompatible nature of plant-derived nanoparticles. The present study deals with the first green synthesis of silver nanoparticles (Ag-NPs) using Endostemon viscosus, and their synthesized Ag NPs were characterized by different spectral methods (UV-vis Spectroscopy, Fourier Transform Infrared Spectroscopy (FTIR), X-ray diffraction Spectroscopy (XRD), Transmission Electron Microscopy (TEM) and Energy dispersive X-ray Spectroscopy (EDAX). The change initially observed the production of Ag-NPs in color from green to ash and then confirmed by SPR band at 435 nm in UV-vis spectral analysis. The FTIR findings indicate that many functional groups belong to the pharmaceutically useful phytochemicals, which interact as reducing, capping, and stabilizing agents in synthesizing silver nanoparticles. The predominant peaks in the XRD pattern belong to the planes 210°, 111°, 200°, 241°, and 311° and thus demonstrated the Ag-NPs FCC crystal structure. TEM analysis exhibited spherical-shaped particles with an average size of 13 nm, and the EDAX band showed a distinctive metallic silver peak at 3.0 keV. The antibacterial activity of Ag-NPs tested to show a maximum zone of inhibition of 19 mm for Staphylococcus aureus and 15 mm for Escherichia coli at 100 μg/mL, respectively. Bio-fabricated Ag-NPs were assessed for antioxidant activity (DPPH with % inhibition 57.54% and FRAP with % inhibition 70.89%). The biosynthesized Ag-NPs demonstrated potential larvicidal efficacy against Aedes aegypti with more than 90% at 250 μg/mL. Histological profiles were altered while treating with Ag-NPs at 250 μg/mL. The photocatalytic activity of synthesized E. viscosus Ag-NPs was tested against methylene blue (MB) and crystal violet (CV), and the maximum degradation efficiency was found as 90 and 94%, respectively. Furthermore, the toxicity test on zebrafish embryos demonstrated that aberrations have only been induced at concentrations higher than 500 μg/mL. We conclude that the greenly produced Ag-NPs may find use in biomedical applications based on bacteria and cost-effective industrial wastewater treatment.
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Affiliation(s)
- Ragavendran Chinnasamy
- Department of Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, 600 077, India
| | - Kamaraj Chinnaperumal
- Interdisciplinary Institute of Indian System of Medicine (IIISM), Directorate of Research and Virtual Education, SRM Institute of Science and Technology (SRMIST), Kattankulathur, Chennai, 603203, Tamil Nadu, India
| | - Manigandan Venkatesan
- Department of Medicine, University of Texas Health Science Center, San Antonio, TX, USA
| | - Krithikadatta Jogikalmat
- Department of Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, 600 077, India
| | - Tijo Cherian
- Department of Ocean Studies and Marine Biology, Pondicherry University, Port Blair Campus, Brookshabad, Port Blair, Andamans, 744112, India
| | - Peijnenburg Willie
- Leiden University, Institute of Environmental Sciences (CML), P.O. Box 9518, 2300 RA, Leiden, the Netherlands; National Institute of Public Health and the Environment (RIVM), Center for Safety of Substances and Products, P.O. Box 1, Bilthoven, the Netherlands
| | - Guilherme Malafaia
- Laboratory of Toxicology Applied to the Environment, Goiano Federal Institute, Urutaí, GO, Brazil; Post-Graduation Program in Conservation of Cerrado Natural Resources, Goiano Federal Institute, Urutaí, GO, Brazil; Post-Graduation Program in Ecology, Conservation, and Biodiversity, Federal University of Uberlândia, Uberlândia, MG, Brazil; Post-Graduation Program in Biotechnology and Biodiversity, Federal University of Goiás, Goiânia, GO, Brazil.
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