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Cometta S, Donose BC, Juárez-Saldivar A, Ravichandran A, Xu Y, Bock N, Dargaville TR, Rakić AD, Hutmacher DW. Unravelling the physicochemical and antimicrobial mechanisms of human serum albumin/tannic acid coatings for medical-grade polycaprolactone scaffolds. Bioact Mater 2024; 42:68-84. [PMID: 39280579 PMCID: PMC11399811 DOI: 10.1016/j.bioactmat.2024.08.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Revised: 07/21/2024] [Accepted: 08/20/2024] [Indexed: 09/18/2024] Open
Abstract
Biofilm-related biomaterial infections are notoriously challenging to treat and can lead to chronic infection and persisting inflammation. To date, a large body of research can be reviewed for coatings which potentially prevent bacterial infection while promoting implant integration. Yet only a very small number has been translated from bench to bedside. This study provides an in-depth analysis of the stability, antibacterial mechanism, and biocompatibility of medical grade polycaprolactone (mPCL), coated with human serum albumin (HSA), the most abundant protein in blood plasma, and tannic acid (TA), a natural polyphenol with antibacterial properties. Molecular docking studies demonstrated that HSA and TA interact mainly through hydrogen-bonding, ionic and hydrophobic interactions, leading to smooth and regular assemblies. In vitro bacteria adhesion testing showed that coated scaffolds maintained their antimicrobial properties over 3 days by significantly reducing S. aureus colonization and biofilm formation. Notably, amplitude modulation-frequency modulation (AMFM) based viscoelasticity mapping and transmission electron microscopy (TEM) data suggested that HSA/TA-coatings cause morphological and mechanical changes on the outer cell membrane of S. aureus leading to membrane disruption and cell death while proving non-toxic to human primary cells. These results support this antibiotic-free approach as an effective and biocompatible strategy to prevent biofilm-related biomaterial infections.
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Affiliation(s)
- Silvia Cometta
- Faculty of Engineering, School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, QLD, 4000, Australia
- Australian Research Council Training Centre for Multiscale 3D Imaging, Modelling and Manufacturing (M3D Innovation), Queensland University of Technology, Kelvin Grove, QLD, 4059, Australia
- Max Planck Queensland Centre, Queensland University of Technology, Brisbane, QLD, 4000, Australia
| | - Bogdan C Donose
- School of Electrical Engineering and Computer Science, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Alfredo Juárez-Saldivar
- Unidad Académica Multidisciplinaria Reynosa Aztlán, Universidad Autónoma de Tamaulipas, Reynosa, 88740, Mexico
| | - Akhilandeshwari Ravichandran
- Faculty of Engineering, School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, QLD, 4000, Australia
| | - Yanan Xu
- Central Analytical Research Facility (CARF), Queensland University of Technology, Brisbane, QLD, 4000, Australia
| | - Nathalie Bock
- Australian Research Council Training Centre for Multiscale 3D Imaging, Modelling and Manufacturing (M3D Innovation), Queensland University of Technology, Kelvin Grove, QLD, 4059, Australia
- Max Planck Queensland Centre, Queensland University of Technology, Brisbane, QLD, 4000, Australia
- Faculty of Health, School of Biomedical Sciences, Queensland University of Technology, Brisbane, QLD, 4000, Australia
- Translational Research Institute, Woolloongabba, QLD, 4102, Australia
| | - Tim R Dargaville
- Centre for Materials Science, School of Chemistry and Physics, Queensland University of Technology, Brisbane, QLD, 4000, Australia
- Australian Research Council Training Centre for Cell and Tissue Engineering Technologies, Queensland University of Technology, Brisbane, QLD, 4059, Australia
| | - Aleksandar D Rakić
- School of Electrical Engineering and Computer Science, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Dietmar W Hutmacher
- Faculty of Engineering, School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, QLD, 4000, Australia
- Australian Research Council Training Centre for Multiscale 3D Imaging, Modelling and Manufacturing (M3D Innovation), Queensland University of Technology, Kelvin Grove, QLD, 4059, Australia
- Max Planck Queensland Centre, Queensland University of Technology, Brisbane, QLD, 4000, Australia
- Translational Research Institute, Woolloongabba, QLD, 4102, Australia
- Australian Research Council Training Centre for Cell and Tissue Engineering Technologies, Queensland University of Technology, Brisbane, QLD, 4059, Australia
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Paul D, Pandey A, Neogi S. Bacterial cell permeability study by metal oxide and mixed metal oxide nanoparticles: analysis of the factors contributing to the antibacterial activity of nanoparticles. World J Microbiol Biotechnol 2023; 39:281. [PMID: 37589765 DOI: 10.1007/s11274-023-03712-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 07/21/2023] [Indexed: 08/18/2023]
Abstract
In this work, we investigate the nanoparticle-cell wall interaction by NiO and mixed metal oxide CuO-NiO nanoparticles. We have synthesized and characterized the nanoparticles using XRD, FESEM, EDS, UV vis. spectroscopy, FTIR, Zeta, and TEM analysis in our previous work. Furthermore, a preliminary antibacterial study showed that both the nanoparticles performed very well as antibacterial agents. In this extended work, we investigate the mechanism of interaction of NiO and CuO-NiO nanoparticles with S. aureus and E. coli cells as there are number of studies for antibacterial mechanism of CuO nanoparticles. The uptake of crystal violet dye in the outer bacterial membrane, the release of ß-galactosidase enzyme, and relative electric conductivity assay were used to investigate changes in the permeability and integrity of the cell membrane. Superoxide ions, which are produced intracellularly as ROS by nanoparticles, severely damage bacterial membranes. Zeta potential measurement, which resulted in surface charge neutralization, proved membrane instability. FTIR analysis was used to identify changes in the proteins, carbohydrates, and fatty acids that make up the chemical composition of cell surfaces. AFM imaging demonstrated extensive alteration of the nanomechanical and surface characteristics. Confocal microscopy examination supported the DNA fragmentation and nanoparticle-cell adhesion. Due to their enhanced antibacterial activity when compared to monometallic oxide nanoparticles, this study demonstrated that mixed metal oxides can be employed in the health and biomedical sectors.
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Affiliation(s)
- Debashri Paul
- Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India
| | - Ankur Pandey
- Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
| | - Sudarsan Neogi
- Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India.
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Gui T, Huan S, Zhuang T, Zhang HT, Yang J, Bowei L, Chen T, Huang X, Liu HW, Zha Z. Hippo/YAP1 inhibition by verteporfin attenuates osteophyte formation in a mouse surgical osteoarthritis model. BIOMATERIALS ADVANCES 2023; 149:213413. [PMID: 37027967 DOI: 10.1016/j.bioadv.2023.213413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 03/11/2023] [Accepted: 03/29/2023] [Indexed: 04/04/2023]
Abstract
Osteophyte is an outgrowth of cartilage formed at the margins of the affected joint through endochondral ossification-like processes, and is one of the most common radiographic features of osteoarthritis (OA) that has been used to define the stage of disease. Osteophyte has been regarded to adapt the joint to the altered biomechanics of OA patients, limits joint movement and represent a source of joint pain, however, the mechanism of osteophyte formation, the morphology characteristics and biomechanical properties of osteophyte cells are remained unclear. In the present study, we isolated osteophyte cells and chondrocytes from late-stage OA patients who underwent total knee replacement surgeries, by applying Atomic Force Microscopy (AFM), we identified osteophyte cells were in irregular shape with dendrites, shrunk cell body, smooth surface and high elastic modulus (23.3 ± 5.4 kPa) when compared with chondrocytes (6.5 ± 1.8 kPa). In addition, osteophyte cells showed higher proliferation ability and colony formation capacity than chondrocytes. Mechanistically, we identified YAP1, the core transcriptional factor of Hippo signaling pathway, was highly expressed in osteophyte cell both at protein and RNA levels. Inactivation of Hippo/YAP1 signaling pathway by Verteporfin is sufficient to inhibit osteophyte cell proliferation in vitro and attenuate osteophyte formation in vivo. In conclusion, the morphology characteristic and biomechanical property of osteophyte cells at single cell level are quite different from chondrocytes, although we could not exclude other regulatory mechanisms, our findings suggested that Hippo/YAP1 is of great importance for osteophyte formation.
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Niranjan R, Zafar S, Lochab B, Priyadarshini R. Synthesis and Characterization of Sulfur and Sulfur-Selenium Nanoparticles Loaded on Reduced Graphene Oxide and Their Antibacterial Activity against Gram-Positive Pathogens. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:191. [PMID: 35055210 PMCID: PMC8782023 DOI: 10.3390/nano12020191] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/26/2021] [Accepted: 12/29/2021] [Indexed: 11/24/2022]
Abstract
Resistance to antimicrobial agents in Gram-positive bacteria has become a major concern in the last decade. Recently, nanoparticles (NP) have emerged as a potential solution to antibiotic resistance. We synthesized three reduced graphene oxide (rGO) nanoparticles, namely rGO, rGO-S, and rGO-S/Se, and characterized them using X-ray diffraction (PXRD), Raman analysis, and thermogravimetric analysis. Transmission electron microscopy confirmed spherical shape nanometer size S and S/Se NPs on the rGO surface. Antibacterial properties of all three nanomaterials were probed against Gram-positive pathogens Staphylococcus aureus and Enterococcus faecalis, using turbidometeric and CFU assays. Among the synthesized nanomaterials, rGO-S/Se exhibited relatively strong antibacterial activity against both Gram-positive microorganism tested in a concentration dependent manner (growth inhibition >90% at 200 μg/mL). Atomic force microscopy of rGO-S/Se treated cells displayed morphological aberrations. Our studies also revealed that rGO composite NPs are able to deposit on the bacterial cell surface, resulting in membrane perturbation and oxidative stress. Taken together, our results suggest a possible three-pronged approach of bacterial cytotoxicity by these graphene-based materials.
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Affiliation(s)
- Rashmi Niranjan
- Department of Life Sciences, School of Natural Sciences, Shiv Nadar University, Gautam Buddha Nagar 201314, India;
| | - Saad Zafar
- Materials Chemistry Laboratory, Department of Chemistry, School of Natural Sciences, Shiv Nadar University, Gautam Buddha Nagar 201314, India;
| | - Bimlesh Lochab
- Materials Chemistry Laboratory, Department of Chemistry, School of Natural Sciences, Shiv Nadar University, Gautam Buddha Nagar 201314, India;
| | - Richa Priyadarshini
- Department of Life Sciences, School of Natural Sciences, Shiv Nadar University, Gautam Buddha Nagar 201314, India;
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Photodynamic effect of TPP encapsulated in polystyrene nanoparticles toward multi-resistant pathogenic bacterial strains: AFM evaluation. Sci Rep 2021; 11:6786. [PMID: 33762617 PMCID: PMC7990921 DOI: 10.1038/s41598-021-85828-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 03/01/2021] [Indexed: 12/14/2022] Open
Abstract
Photodynamic inactivation (PDI) is a promising approach for the efficient killing of pathogenic microbes. In this study, the photodynamic effect of sulfonated polystyrene nanoparticles with encapsulated hydrophobic 5,10,15,20-tetraphenylporphyrin (TPP-NP) photosensitizers on Gram-positive (including multi-resistant) and Gram-negative bacterial strains was investigated. The cell viability was determined by the colony forming unit method. The results showed no dark cytotoxicity but high phototoxicity within the tested conditions. Gram-positive bacteria were more sensitive to TPP-NPs than Gram-negative bacteria. Atomic force microscopy was used to detect changes in the morphological properties of bacteria before and after the PDI treatment.
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Zhao ZJ, Xu ZP, Ma YY, Ma JD, Hong G. Photodynamic antimicrobial chemotherapy in mice with Pseudomonas aeruginosa-infected wounds. PLoS One 2020; 15:e0237851. [PMID: 32877414 PMCID: PMC7467278 DOI: 10.1371/journal.pone.0237851] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Accepted: 08/04/2020] [Indexed: 12/03/2022] Open
Abstract
This study examined the antibacterial effect of protoporphyrin IX–ethylenediamine derivative (PPIX-ED)–mediated photodynamic antimicrobial chemotherapy (PPIX-ED-PACT) against Pseudomonas aeruginosa in vitro and in vivo. PPIX-ED potently inhibited the growth of Pseudomonas aeruginosa by inducing reactive oxygen species production via photoactivation. Atomic force microscopy revealed that PPIX-ED-PACT induced the leakage of bacterial content by degrading the bacterial membrane and wall. As revealed using acridine orange/ethidium bromide staining, PPIX-ED-PACT altered the permeability of the bacterial membrane. In addition, the antibacterial effect of PPIX-ED-PACT was demonstrated in an in vivo model of P. aeruginosa-infected wounds. PPIX-ED (100 μM) decreased the number of P. aeruginosa colony-forming units by 4.2 log10. Moreover, histological analysis illustrated that the wound healing rate was 98% on day 14 after treatment, which was 10% higher than that in the control group. According to the present findings, PPIX-ED-PACT can effectively inhibit the growth of P. aeruginosa in vitro and in vivo.
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Affiliation(s)
- Zhan-Juan Zhao
- School of Basic Medical Science, Hebei University, Baoding, China
| | - Zeng-Ping Xu
- Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin Key Laboratory of Biomedical Material, Tianjin, China
| | - Ying-Ying Ma
- Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin Key Laboratory of Biomedical Material, Tianjin, China
| | - Jin-Duo Ma
- School of Basic Medical Science, Hebei University, Baoding, China
| | - Ge Hong
- Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin Key Laboratory of Biomedical Material, Tianjin, China
- * E-mail:
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Zou M, Tao W, Ye X, Liu D. Evaluation of antimicrobial and antibiofilm properties of proanthocyanidins from Chinese bayberry ( Myrica rubra Sieb. et Zucc.) leaves against Staphylococcus epidermidis. Food Sci Nutr 2020; 8:139-149. [PMID: 31993140 PMCID: PMC6977480 DOI: 10.1002/fsn3.1283] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Revised: 09/25/2019] [Accepted: 10/09/2019] [Indexed: 12/17/2022] Open
Abstract
Staphylococcus epidermidis has emerged in recent years as one of the most important opportunistic pathogens owing to its ability to attach to processing surfaces in the food industry. Demands of foodstuffs maintaining microbiological safety and stability enhance the need to develop natural antimicrobial agents as food preservatives. Proanthocyanidins from Chinese bayberry leaves (BLPs) belonging to the class of polyphenols promise to be a potential antibacterial material against bacterial adhesion and biofilm formation. The aim of the present study was to investigate the effects of BLPs on S. epidermidis growth and biofilm formation. BLPs possessed antimicrobial activity with MIC and MBC of 320 and 640 μg/ml, respectively. Scanning electron microscopy, transmission electron microscopy, and flow cytometry analysis revealed a loss of the cell structure and function after treatment of BLPs, evidenced by cell membrane hyperpolarization and changes in cellular morphology. BLPs inhibited the biofilm formation by S. epidermidis on polystyrene microplates. Atomic force microscopy analysis showed that BLPs could decrease the stiffness and adhesion force of the cell envelope, which might account for the inhibition of biofilm formation. In summary, this study indicated that BLPs have potential to be developed as natural preservatives to control S. epidermidis in foods.
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Affiliation(s)
- Mingming Zou
- National Engineering Laboratory of Intelligent Food Technology and EquipmentZhejiang Key Laboratory for Agro‐Food ProcessingCollege of Biosystems Engineering and Food ScienceFuli Institute of Food ScienceZhejiang UniversityHangzhouChina
| | - Wenyang Tao
- National Engineering Laboratory of Intelligent Food Technology and EquipmentZhejiang Key Laboratory for Agro‐Food ProcessingCollege of Biosystems Engineering and Food ScienceFuli Institute of Food ScienceZhejiang UniversityHangzhouChina
| | - Xingqian Ye
- National Engineering Laboratory of Intelligent Food Technology and EquipmentZhejiang Key Laboratory for Agro‐Food ProcessingCollege of Biosystems Engineering and Food ScienceFuli Institute of Food ScienceZhejiang UniversityHangzhouChina
| | - Donghong Liu
- National Engineering Laboratory of Intelligent Food Technology and EquipmentZhejiang Key Laboratory for Agro‐Food ProcessingCollege of Biosystems Engineering and Food ScienceFuli Institute of Food ScienceZhejiang UniversityHangzhouChina
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Porphyrinoid photosensitizers mediated photodynamic inactivation against bacteria. Eur J Med Chem 2019; 175:72-106. [PMID: 31096157 DOI: 10.1016/j.ejmech.2019.04.057] [Citation(s) in RCA: 95] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 12/27/2018] [Accepted: 04/19/2019] [Indexed: 12/28/2022]
Abstract
The multi-drug resistant bacteria have become a serious problem complicating therapies to such a degree that often the term "post-antibiotic era" is applied to describe the situation. The infections with methicillin-resistant S. aureus, vancomycin-resistant E. faecium, third generation cephalosporin-resistant E. coli, third generation cephalosporin-resistant K. pneumoniae and carbapenem-resistant P. aeruginosa have become commonplace. Thus, the new strategies of infection treatment have been searched for, and one of the approaches is based on photodynamic antimicrobial chemotherapy. Photodynamic protocols require the interaction of photosensitizer, molecular oxygen and light. The aim of this review is to provide a comprehensive overview of photodynamic antimicrobial chemotherapy by porphyrinoid photosensitizers. In the first part of the review information on the mechanism of photodynamic action and the mechanism of the bacteria resistance to the photodynamic technique were described. In the second one, it was described porphyrinoids photosensitizers like: porphyrins, chlorins and phthalocyanines useable in photodynamic bacteria inactivation.
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Romio KB, dos Santos KF, da Silva RJ, Pedro MF, Kalck AS, da Silva Sousa M, Possamai LM, Souto PC, Silva JR, de Souza NC. Incorporation of triclosan and acridine orange into liposomes for evaluating the susceptibility of Candida albicans. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 173:514-521. [DOI: 10.1016/j.jphotobiol.2017.06.034] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 06/20/2017] [Accepted: 06/24/2017] [Indexed: 12/17/2022]
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The selective cytotoxicity of DSF-Cu attributes to the biomechanical properties and cytoskeleton rearrangements in the normal and cancerous nasopharyngeal epithelial cells. Int J Biochem Cell Biol 2017; 84:96-108. [PMID: 28111334 DOI: 10.1016/j.biocel.2017.01.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2016] [Revised: 01/14/2017] [Accepted: 01/16/2017] [Indexed: 12/15/2022]
Abstract
Cancer initiation and progression follow complex changes of cellular architecture and biomechanical property. Cancer cells with more submissive (or "softer") than their healthy counterparts attributed to the reorganization of the complex cytoskeleton structure, may be considered as a potential anti-tumor therapeutic target. In this study, atomic force microscopy (AFM) was carried out to detect the topographical and biophysical changes of nasopharyngeal carcinoma CNE-2Z cells and normal nasopharyngeal epithelial cells NP69-SV40T by treating the Disulfiram chelated with Cu2+ (DSF-Cu). DSF-Cu induced the apoptotic population, ROS production and decreased the NF-κB-p65 expression of CNE-2Z cells, which was much higher than those of NP69-SV40T cells. DSF-Cu caused the obvious changes of cell morphology and membrane ultrastructure in CNE-2Z cells. The roughness decreased and stiffness increased significantly in CNE-2Z cells, which correlated with the rearrangement of intracellular F-actin, FLNa and α-tubulin structures in CNE-2Z cells. And the adhesion force of CNE-2Z cells was also increased accompanied with the increased E-cadherin expression. However, these results could not be observed in the NP69-SV40T cells even the concentration of DSF reached up to 400nM. Finally, the detection of cell wound scratch assay confirmed DSF-Cu could inhibit the migration of CNE-2Z cells, but no effect on NP69-SV40T cells. These findings demonstrated the selective cytotoxicity of DSF-Cu in CNE-2Z cells may attribute to the different mechanical properties and cytoskeleton rearrangement from the normal nasopharyngeal epithelial cells.
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Overall biochemical changes in bacteria photosensitized with cationic porphyrins monitored by infrared spectroscopy. Future Med Chem 2016; 8:613-28. [PMID: 27073984 DOI: 10.4155/fmc-2015-0008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Photodynamic inactivation of micro-organisms is a promising nonantibiotic multitarget approach to treat localized and superficial infections through oxidative stress. Herein, the changes occurring on major cellular components of Escherichia coli and Staphylococcus warneri, induced by photosensitization with cationic porphyrins (Tri-Py(+)-Me-PF and Tetra-Py(+)-Me) and white light, were monitored by infrared spectroscopy. RESULTS In E. coli, most of the changes occurred on proteins and lipids, suggesting a key effect on lipopolysaccharides in the first irradiation times. In S. warneri, proteins were the major molecular targets of oxidative damage but phospholipids and polysaccharides were also affected. CONCLUSION Infrared spectroscopy is a very interesting tool to monitor biochemical changes induced by photosensitization in bacteria and also to infer on its mechanism of action.
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Xu Z, Gao Y, Meng S, Yang B, Pang L, Wang C, Liu T. Mechanism and In Vivo Evaluation: Photodynamic Antibacterial Chemotherapy of Lysine-Porphyrin Conjugate. Front Microbiol 2016; 7:242. [PMID: 26973620 PMCID: PMC4774361 DOI: 10.3389/fmicb.2016.00242] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Accepted: 02/15/2016] [Indexed: 01/21/2023] Open
Abstract
Lysine-porphyrin conjugate 4i has potent photosensitive antibacterial effect on clinical isolated bacterial strains such as Methicillin-resistant Staphylococcus aureus (MRSA), Escherichia coli, and Pseudomonas aeruginosa. The mechanism of photodynamic antibacterial chemotherapy of 4i (4i-PACT) in vitro and the treatment effect in vivo was investigated in this paper. Atomic force microscopy (AFM) revealed that 4i-PACT can effectively destroy membrane and wall of bacteria, resulting in leakage of its content. This was confirmed by dual fluorescent staining with acridine orange/ethidium bromide and measuring materials absorption at 260 nm. Agarose gel electrophoresis measurement showed that 4i-PACT can damage genomic DNA. Healing of wound in rat infected by mixed bacteria showed that the efficiency of 4i-PACT is dependent on the dose of light. These results showed that 4i-PACT has promising bactericidal effect both in vitro and in vivo.
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Affiliation(s)
- Zengping Xu
- Tianjin Key Laboratory of Biomedical Material, Institute of Biomedical Engineering, Peking Union Medical College - Chinese Academy of Medical Sciences Tianjin, China
| | - Yuxiang Gao
- Department of Materials Chemistry, Nankai University Tianjin, China
| | - Shuai Meng
- Tianjin Key Laboratory of Biomedical Material, Institute of Biomedical Engineering, Peking Union Medical College - Chinese Academy of Medical SciencesTianjin, China; Tianjin Medical University Cancer Institute and HospitalTianjin, China
| | - Baochen Yang
- Tianjin Key Laboratory of Biomedical Material, Institute of Biomedical Engineering, Peking Union Medical College - Chinese Academy of Medical Sciences Tianjin, China
| | - Liyun Pang
- Tianjin Key Laboratory of Biomedical Material, Institute of Biomedical Engineering, Peking Union Medical College - Chinese Academy of Medical Sciences Tianjin, China
| | - Chen Wang
- Tianjin Medical University Cancer Institute and Hospital Tianjin, China
| | - Tianjun Liu
- Tianjin Key Laboratory of Biomedical Material, Institute of Biomedical Engineering, Peking Union Medical College - Chinese Academy of Medical Sciences Tianjin, China
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Liu C, Hu M, Zeng X, Nair SP, Xu J. Photodynamic inactivation of Candida albicans by hematoporphyrin monomethyl ether. Future Microbiol 2016; 11:351-62. [PMID: 26933758 DOI: 10.2217/fmb.15.142] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
AIM To evaluate the capacity of hematoporphyrin monomethyl ether (HMME) in the presence of light to cause photodynamic inactivation (PDI) of Candida albicans. MATERIALS & METHODS HMME photoactivity was evaluated against azole-susceptible and -resistant C. albicans. The mechanisms by which PDI of C. albicans occurred were also investigated. RESULTS HMME-mediated PACT caused a dose-dependent inactivation of azole-susceptible and -resistant C. albicans. Incubation with 10 μM HMME and irradiation with 72 J cm(-2) light decreased the viability of C. albicans by 7 log10, induced damage of genomic DNA, led to loss of cellular proteins and damaged the cell wall, membrane and intracellular targets. CONCLUSION Candida albicans can be effectively inactivated by HMME in the presence of light, and HMME-mediated PACT shows its potential as an antifungal treatment.
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Affiliation(s)
- Chengcheng Liu
- Department of Pathogenic Microbiology & Immunology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, 76 West Yanta Road, Xi'an 710061, PR China.,Key Laboratory of Environment & Genes Related to Diseases (Xi'an Jiaotong University), Ministry of Education of China, 76 West Yanta Road, Xi'an 710061, PR China
| | - Min Hu
- Department of Applied Chemistry, School of Science, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an 710049, PR China
| | - Xiaoyan Zeng
- The First Affiliated Hospital of College of Medicine, Xi'an Jiaotong University, 277 West Yanta Road, Xi'an 710061, PR China
| | - Sean P Nair
- Department of Microbial Diseases, UCL Eastman Dental Institute, 256 Gray's Inn Road, London WC1X 8LD, UK
| | - Jiru Xu
- Department of Pathogenic Microbiology & Immunology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, 76 West Yanta Road, Xi'an 710061, PR China.,Key Laboratory of Environment & Genes Related to Diseases (Xi'an Jiaotong University), Ministry of Education of China, 76 West Yanta Road, Xi'an 710061, PR China
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Jasevičius R, Baronas R, Kruggel-Emden H. Numerical modelling of the normal adhesive elastic–plastic interaction of a bacterium. ADV POWDER TECHNOL 2015. [DOI: 10.1016/j.apt.2015.04.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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15
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Abstract
The emergence of microbial resistance is becoming a global problem in clinical and environmental areas. As such, the development of drugs with novel modes of action will be vital to meet the threats created by the rise in microbial resistance. Microbial photodynamic inactivation is receiving considerable attention for its potentialities as a new antimicrobial treatment. This review addresses the interactions between photosensitizers and bacterial cells (binding site and cellular localization), the ultrastructural, morphological and functional changes observed at initial stages and during the course of photodynamic inactivation, the oxidative alterations in specific molecular targets, and a possible development of resistance.
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16
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Morphological alterations on Citrobacter freundii bacteria induced by erythrosine dye and laser light. Lasers Med Sci 2013; 30:469-73. [DOI: 10.1007/s10103-013-1421-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Accepted: 08/08/2013] [Indexed: 10/26/2022]
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Shi J, Ma R, Wang L, Zhang J, Liu R, Li L, Liu Y, Hou L, Yu X, Gao J, Zhang Z. The application of hyaluronic acid-derivatized carbon nanotubes in hematoporphyrin monomethyl ether-based photodynamic therapy for in vivo and in vitro cancer treatment. Int J Nanomedicine 2013; 8:2361-73. [PMID: 23843694 PMCID: PMC3702246 DOI: 10.2147/ijn.s45407] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Carbon nanotubes (CNTs) have shown great potential in both photothermal therapy and drug delivery. In this study, a CNT derivative, hyaluronic acid-derivatized CNTs (HA-CNTs) with high aqueous solubility, neutral pH, and tumor-targeting activity, were synthesized and characterized, and then a new photodynamic therapy agent, hematoporphyrin monomethyl ether (HMME), was adsorbed onto the functionalized CNTs to develop HMME-HA-CNTs. Tumor growth inhibition was investigated both in vivo and in vitro by a combination of photothermal therapy and photodynamic therapy using HMME-HA-CNTs. The ability of HMME-HA-CNT nanoparticles to combine local specific photodynamic therapy with external near-infrared photothermal therapy significantly improved the therapeutic efficacy of cancer treatment. Compared with photodynamic therapy or photothermal therapy alone, the combined treatment demonstrated a synergistic effect, resulting in higher therapeutic efficacy without obvious toxic effects to normal organs. Overall, it was demonstrated that HMME-HA-CNTs could be successfully applied to photodynamic therapy and photothermal therapy simultaneously in future tumor therapy.
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Affiliation(s)
- Jinjin Shi
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
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Liu L, Jin H, Ou J, Jiang J, Pi J, Ke C, Yang F, Qiao D, Cai H, Cai J. Cinobufacini-induced HeLa cell apoptosis enhanced by curcumin. ACTA ACUST UNITED AC 2013. [DOI: 10.1007/s11434-013-5739-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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19
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Melo MASD, Rolim JPML, Zanin ICJ, Barros EB, da–Costa EF, Rodrigues LKA. Characterization of Antimicrobial Photodynamic Therapy-TreatedStreptococci mutans: An Atomic Force Microscopy Study. Photomed Laser Surg 2013; 31:105-9. [DOI: 10.1089/pho.2012.3377] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Affiliation(s)
- Mary Anne Sampaio de Melo
- Post-graduation Program, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | | | - Iriana Carla Junqueira Zanin
- Post-graduation Program, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Eduardo Bede Barros
- Physics Department, Program of Post-graduate Studies in Physics, Campus do Pici, Fortaleza, Ceará, Brazil
| | - Erivelton Façanha da–Costa
- Physics Department, Program of Post-graduate Studies in Physics, Campus do Pici, Fortaleza, Ceará, Brazil
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20
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Jin H, Zhao H, Liu L, Jiang J, Wang X, Ma S, Cai J. Apoptosis induction of K562 cells by lymphocytes: an AFM study. SCANNING 2013; 35:7-11. [PMID: 23417662 DOI: 10.1002/sca.21028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2012] [Revised: 04/10/2012] [Accepted: 04/12/2012] [Indexed: 06/01/2023]
Abstract
Antitumor immunotherapies, as a prospective approach for local cancer treatment, are attracting increasing interests. To detect the reacting course of immune and tumor cells, we have observed the process of K562 cells (a human erythroleukemic cell line) coculturing with peripheral lymphocytes, and the morphological and ultrastructural alterations of K562 cells and lymphocytes were investigated as well using atomic force microscopy (AFM). AFM morphological imaging revealed that after coculture the apoptosis-like structures such as blebbing, pores, and apoptotic bodies were observed on the K562 cells. Also, the cell-surface roughness decreased significantly, which implied the changes in chemical composition of cell membranes. Moreover, the lymphocytes were damaged to some extent induced by the coculture. The data demonstrated that K562 cells could be attacked and induced apoptosis by lymphocytes, and they would make damages to lymphocytes to escape the surveillance of immune system.
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Affiliation(s)
- Hua Jin
- Department of Chemistry and Institute for Nano-Chemistry, Jinan University, Guangzhou, China
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21
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Pathway of cytotoxicity induced by folic acid modified selenium nanoparticles in MCF-7 cells. Appl Microbiol Biotechnol 2012; 97:1051-62. [PMID: 22945264 DOI: 10.1007/s00253-012-4359-7] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Revised: 08/07/2012] [Accepted: 08/09/2012] [Indexed: 12/14/2022]
Abstract
Selenium nanoparticles (Se NPs) have been recognized as promising materials for biomedical applications. To prepare Se NPs which contained cancer targeting methods and to clarify the cellular localization and cytotoxicity mechanisms of these Se NPs against cancer cells, folic acid protected/modified selenium nanoparticles (FA-Se NPs) were first prepared by a one-step method. Some morphologic and spectroscopic methods were obtained to prove the successfully formation of FA-Se NPs while free folate competitive inhibition assay, microscope, and several biological methods were used to determine the in vitro uptake, subcellular localization, and cytotoxicity mechanism of FA-Se NPs in MCF-7 cells. The results indicated that the 70-nm FA-Se NPs were internalized by MCF-7 cells through folate receptor-mediated endocytosis and targeted to mitochondria located regions through endocytic vesicles transporting. Then, the FA-Se NPs entered into mitochondria; triggered the mitochondria-dependent apoptosis of MCF-7 cells which involved oxidative stress, Ca(2)+ stress changes, and mitochondrial dysfunction; and finally caused the damage of mitochondria. FA-Se NPs released from broken mitochondria were transported into nucleus and further into nucleolus which then induced MCF-7 cell cycle arrest. In addition, FA-Se NPs could induce cytoskeleton disorganization and induce MCF-7 cell membrane morphology alterations. These results collectively suggested that FA-Se NPs could be served as potential therapeutic agents and organelle-targeted drug carriers in cancer therapy.
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Jin H, Yang P, Cai J, Wang J, Liu M. Photothermal effects of folate-conjugated Au nanorods on HepG2 cells. Appl Microbiol Biotechnol 2012; 94:1199-208. [PMID: 22406860 DOI: 10.1007/s00253-012-3935-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2012] [Accepted: 01/28/2012] [Indexed: 02/06/2023]
Abstract
Photothermal cancer therapy, as a prospective approach for local cancer treatment, is attracting increasing interests. In this paper, gold nanorods were conjugated with folate (folate/AuNRs), and their photothermal effects on hepatocellular carcinoma cell line (HepG2) using MTT assay, flow cytometry, as well as on the cellular morphology, cytoskeleton, cell surface adhesion, and stiffness detected at subcellular level by an atomic force microscope (AFM) were investigated. The results indicated that near-infrared laser-induced hyperthermia of folate/AuNRs could break the cell membrane integrity and homeostasis and then lead to the depolymerization of cytoskeleton and influx of intracellular Ca(2+). Thus, folate/AuNRs can be as effective and promising nanomaterials for photothermal therapy of folate receptor bearing tumor.
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Affiliation(s)
- Hua Jin
- Department of Chemistry and Institute for Nano-chemistry, Jinan University, Guangzhou, China.
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Jin H, Pi J, Huang X, Huang F, Shao W, Li S, Chen Y, Cai J. BMP2 promotes migration and invasion of breast cancer cells via cytoskeletal reorganization and adhesion decrease: an AFM investigation. Appl Microbiol Biotechnol 2012; 93:1715-23. [PMID: 22270235 DOI: 10.1007/s00253-011-3865-3] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2011] [Revised: 12/14/2011] [Accepted: 12/21/2011] [Indexed: 12/14/2022]
Abstract
Bone morphogenetic protein 2 (BMP2) has been shown to modulate the proliferation and differentiation of breast cancer cells. However, the biochemical effects and mechanisms remain unknown. In this paper, the effects of recombinant human BMP2 on the migration of MCF-7 cells-one breast cancer cell line, using transwell and wound healing experiments, as well as on the cellular morphology, cytoskeleton, cell surface adhesion, and stiffness detected at subcellular level by an atomic force microscope, were investigated. After BMP2 treatment, the untreated round-shaped MCF-7 cells transformed to a spindle-like shape with lots of specialized structures, such as lamellipodia, filopodia, membrane protrusions, and others, which are essential for cellular migration or spreading. Moreover, flow cytometry quantitatively detected the BMP2-induced changes in the expression of adhesion molecules, a significant rise of CD44, and a remarkable drop of E-cadherin. The data indicated that BMP2 promoted the migration and invasion of MCF-7 cells by regulating the reorganization of cytoskeleton and the expression of adhesion molecules in/on the cells. Thus, it is very imperative to evaluate the oncogenicity of BMP2 when used in tissue engineering.
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Affiliation(s)
- Hua Jin
- Department of Chemistry and Institute for Nano-Chemistry, Jinan University, Guangzhou, China.
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Chen XJ, Duan FD, Zhang HH, Xiong Y, Wang J. Sodium selenite-induced apoptosis mediated by ROS attack in human osteosarcoma U2OS cells. Biol Trace Elem Res 2012; 145:1-9. [PMID: 21826611 DOI: 10.1007/s12011-011-9154-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Accepted: 07/15/2011] [Indexed: 10/17/2022]
Abstract
Sodium selenite (Na(2)SeO(3), SSE) is an inorganic Se compound that is widely used in cancer chemoprevention studies. SSE has been shown to have anti-proliferative effects on several types of human cancer cells, but its effect on osteosarcoma cells has thus far not been reported. In this study, the cytotoxic effect of SSE on osteosarcoma cells U2OS was investigated in vitro and found to be higher than on comparable non-cancer cell lines 293 and L6. Treatment with SSE decreased cell growth in a dose- and time-dependent manner and altered cellular morphology. SSE also inhibited cell viability by inducing apoptosis, as evidenced by the formation of apoptotic bodies, generation of reactive oxygen species (ROS), and accumulation of cells during the advanced phase of apoptosis. SSE-induced apoptosis correlated with the activation of CASP 3, downregulation of BCL-2, and upregulation of P53 and PTEN in U2OS cells. These results indicated that SSE induces apoptosis in U2OS cells mainly through an ROS-mediated caspase pathway. This is the first report to show a possible mechanism of the anti-proliferative effect of SSE for the prevention of osteosarcoma in cell culture models.
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Affiliation(s)
- Xiao-Jia Chen
- National Engineering Research Center of Genetic Medicine, Guangdong Provincial Key Laboratory of Bioengineering Medicine, Bioengineering Institute of Jinan University, Guangzhou 510632, China.
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Asok A, Arshad E, Jasmin C, Pai SS, Singh ISB, Mohandas A, Anas A. Reducing Vibrio load in Artemia nauplii using antimicrobial photodynamic therapy: a promising strategy to reduce antibiotic application in shrimp larviculture. Microb Biotechnol 2011; 5:59-68. [PMID: 21951316 PMCID: PMC3815272 DOI: 10.1111/j.1751-7915.2011.00297.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
We propose antimicrobial photodynamic therapy (aPDT) as an alternative strategy to reduce the use of antibiotics in shrimp larviculture systems. The growth of a multiple antibiotic resistant Vibrio harveyi strain was effectively controlled by treating the cells with Rose Bengal and photosensitizing for 30 min using a halogen lamp. This resulted in the death of > 50% of the cells within the first 10 min of exposure and the 50% reduction in the cell wall integrity after 30 min could be attributed to the destruction of outer membrane protein of V. harveyi by reactive oxygen intermediates produced during the photosensitization. Further, mesocosm experiments with V. harveyi and Artemia nauplii demonstrated that in 30 min, the aPDT could kill 78.9% and 91.2% of heterotrophic bacterial and Vibrio population respectively. In conclusion, the study demonstrated that aPDT with its rapid action and as yet unreported resistance development possibilities could be a propitious strategy to reduce the use of antibiotics in shrimp larviculture systems and thereby, avoid their hazardous effects on human health and the ecosystem at large.
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Affiliation(s)
- Aparna Asok
- National Centre for Aquatic Animal Health, Cochin University of Science and Technology, Kochi 682016, India
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