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Van Gray JB, Ayayee P. Examining the impacts of salt specificity on freshwater microbial community and functional potential following salinization. Environ Microbiol 2024; 26:e16628. [PMID: 38757470 DOI: 10.1111/1462-2920.16628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Accepted: 04/05/2024] [Indexed: 05/18/2024]
Abstract
The degradation of freshwater systems by salt pollution is a threat to global freshwater resources. Salinization is commonly identified by increased specific conductance (conductivity), a proxy for salt concentrations. However, conductivity fails to account for the diversity of salts entering freshwaters and the potential implications this has on microbial communities and functions. We tested 4 types of salt pollution-MgCl2, MgSO4, NaCl, and Na2SO4-on bacterial taxonomic and functional α-, β-diversity of communities originating from streams in two distinct localities (Nebraska [NE] and Ohio [OH], USA). Community responses depended on the site of origin, with NE and OH exhibiting more pronounced decreases in community diversity in response to Na2SO4 and MgCl2 than other salt amendments. A closer examination of taxonomic and functional diversity metrics suggests that core features of communities are more resistant to induced salt stress and that marginal features at both a population and functional level are more likely to exhibit significant structural shifts based on salt specificity. The lack of uniformity in community response highlights the need to consider the compositional complexities of salinization to accurately identify the ecological consequences of instances of salt pollution.
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Affiliation(s)
- Jonathon B Van Gray
- The Ohio State University CFAES Wooster, Agriculture Technical Institute, Wooster, Ohio, USA
| | - Paul Ayayee
- Department of Biology, University of Nebraska at Omaha, Omaha, Nebraska, USA
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Saha S, Costa RC, Silva MC, Fonseca-Santos JM, Chen L, Phakatkar AH, Bhatia H, Faverani LP, Barão VA, Shokuhfar T, Sukotjo C, Takoudis C. Collagen membrane functionalized with magnesium oxide via room-temperature atomic layer deposition promotes osteopromotive and antimicrobial properties. Bioact Mater 2023; 30:46-61. [PMID: 37521273 PMCID: PMC10382637 DOI: 10.1016/j.bioactmat.2023.07.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 07/02/2023] [Accepted: 07/17/2023] [Indexed: 08/01/2023] Open
Abstract
Artificial bone grafting materials such as collagen are gaining interest due to the ease of production and implantation. However, collagen must be supplemented with additional coating materials for improved osteointegration. Here, we report room-temperature atomic layer deposition (ALD) of MgO, a novel method to coat collagen membranes with MgO. Characterization techniques such as X-ray photoelectron spectroscopy, Raman spectroscopy, and electron beam dispersion mapping confirm the chemical nature of the film. Scanning electron and atomic force microscopies show the surface topography and morphology of the collagen fibers were not altered during the ALD of MgO. Slow release of magnesium ions promotes bone growth, and we show the deposited MgO film leaches trace amounts of Mg when incubated in phosphate-buffered saline at 37 °C. The coated collagen membrane had a superhydrophilic surface immediately after the deposition of MgO. The film was not toxic to human cells and demonstrated antibacterial properties against bacterial biofilms. Furthermore, in vivo studies performed on calvaria rats showed MgO-coated membranes (200 and 500 ALD) elicit a higher inflammatory response, leading to an increase in angiogenesis and a greater bone formation, mainly for Col-MgO500, compared to uncoated collagen. Based on the characterization of the MgO film and in vitro and in vivo data, the MgO-coated collagen membranes are excellent candidates for guided bone regeneration.
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Affiliation(s)
- Soumya Saha
- Department of Biomedical Engineering, University of Illinois Chicago, Chicago, USA
| | - Raphael Cavalcante Costa
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil
| | - Mirela Caroline Silva
- Department of Diagnosis and Surgery, Division of Oral and Maxillofacial Surgery and Implantology, São Paulo State University (UNESP), School of Dentistry, Araçatuba, São Paulo, Brazil
| | - João Matheus Fonseca-Santos
- Department of Diagnosis and Surgery, Division of Oral and Maxillofacial Surgery and Implantology, São Paulo State University (UNESP), School of Dentistry, Araçatuba, São Paulo, Brazil
| | - Lin Chen
- Department of Periodontics, Center for Wound Healing and Tissue Regeneration, College of Dentistry, University of Illinois Chicago, Chicago, USA
| | - Abhijit H. Phakatkar
- Department of Biomedical Engineering, University of Illinois Chicago, Chicago, USA
| | - Harshdeep Bhatia
- Department of Chemical Engineering, University of Illinois Chicago, Chicago, USA
| | - Leonardo P. Faverani
- Department of Diagnosis and Surgery, Division of Oral and Maxillofacial Surgery and Implantology, São Paulo State University (UNESP), School of Dentistry, Araçatuba, São Paulo, Brazil
| | - Valentim A.R. Barão
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil
| | - Tolou Shokuhfar
- Department of Biomedical Engineering, University of Illinois Chicago, Chicago, USA
| | - Cortino Sukotjo
- Department of Restorative Dentistry, University of Illinois Chicago College of Dentistry, Chicago, USA
| | - Christos Takoudis
- Department of Biomedical Engineering, University of Illinois Chicago, Chicago, USA
- Department of Chemical Engineering, University of Illinois Chicago, Chicago, USA
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Bhattacharjee A, Jo Y, Bose S. In vivo and In vitro properties evaluation of curcumin loaded MgO doped 3D printed TCP scaffolds. J Mater Chem B 2023; 11:4725-4739. [PMID: 37171110 PMCID: PMC10314738 DOI: 10.1039/d2tb02547g] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The lack of site-specific chemotherapeutic agents to treat bone malignancy throws a significant challenge in the design of a delivery vehicle. The major scientific question posed in this study is, can we utilize curcumin-loaded magnesium oxide (MgO) doped 3D printed tricalcium phosphate (TCP) bone grafts as a localized delivery system that improves early stage in vivo osseointegration and in vitro chemoprevention, antibacterial properties? We have utilized curcumin as an alternative natural chemopreventive agent for bone cancer-specific delivery after direct incorporation on the 3D printed tricalcium phosphate (TCP) bone grafts. The addition of MgO as a dopant to TCP leads to ∼1.3 times enhancement in compressive strength. The designed drug delivery system shows up to ∼22% curcumin release in a physiological pH of 7.4 after 30 days. The presence of curcumin leads to up to ∼8.5 times reduction in osteosarcoma viability. In vitro results indicate that these scaffolds significantly enhance bone-forming osteoblast cells while reducing the bone-resorbing osteoclast cells. The in vivo rat distal femur model surgery followed by histological assessment with H&E, vWF, and Movat pentachrome staining results show that the designed scaffolds lead to new bone formation (up to ∼2.5 times higher than the control) after successful implantation. The presence of MgO and curcumin results in up to ∼71% antibacterial efficacy against osteomyelitis causing S. aureus. These 3D printed osteogenic and chemopreventive scaffolds can be utilized in patient-specific low load-bearing defect sites.
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Affiliation(s)
- Arjak Bhattacharjee
- W. M. Keck Biomedical Materials Research Laboratory School of Mechanical and Materials Engineering Washington State University, Pullman, Washington 99164, USA.
| | - Yongdeok Jo
- W. M. Keck Biomedical Materials Research Laboratory School of Mechanical and Materials Engineering Washington State University, Pullman, Washington 99164, USA.
| | - Susmita Bose
- W. M. Keck Biomedical Materials Research Laboratory School of Mechanical and Materials Engineering Washington State University, Pullman, Washington 99164, USA.
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Syeddan SA. Research Methodology and Mechanisms of Action of Current Orthopaedic Implant Coatings. J Long Term Eff Med Implants 2023; 33:51-66. [PMID: 36734927 DOI: 10.1615/jlongtermeffmedimplants.2022040062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Orthopedic implants are crucial interventions that are gaining greater importance in modern medicine to restore function to commonly affected joints. Each implantation carries the risk of implant-associated infection and loosening of the implant due to improper integration with soft tissue. Coating strategies have been developed to aid the growth of bone into the implant (osteointegration) and prevent biofilm formation to avoid infection. In this review, primary articles highlighting recent developments and advancements in orthopedic implant coating will be presented. Additionally, the methodology of the articles will be critiqued based on this research criteria: establishment of function on a theoretical basis, validation of coating function, and potential next steps/improvements based on results. A theoretical basis based on understanding the mechanisms at play of these various coatings allows for systems to be developed to tackle the tasks of osteointegration, subversion of infection, and avoidance of cytotoxicity. The current state of research methodology in coating design focuses too heavily on either osteointegration or the prevention of infection, thus, future development in medical implant coating needs to investigate the creation of a coating that accomplishes both tasks. Additionally, next steps and improvements to systems need to be better highlighted to move forward when problems arise within a system. Research currently showcasing new coatings is performed primarily in vitro and in vivo. More clinical trials need to be performed to highlight long-term sustainability, the structural integrity, and the safety of the implant.
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Avram A, Rapuntean S, Gorea M, Tomoaia G, Mocanu A, Horovitz O, Rapuntean G, Tomoaia-Cotisel M. In vitro antibacterial effect of forsterite nanopowder: synthesis and characterization. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:77097-77112. [PMID: 35676576 DOI: 10.1007/s11356-022-21280-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 05/31/2022] [Indexed: 06/15/2023]
Abstract
The aims of this study were the preparation, characterization, and in vitro antibacterial activity evaluation of forsterite (FS, Mg2SiO4) nanopowder obtained by two major methods, namely sol-gel (FSsg) and co-precipitation (FSpp). The main aim was to determine the influence of preparation methodologies on physical properties and in vitro antibacterial activity of obtained forsterite nanopowder. To assess the best working temperature for the preparation of FSsg and FSpp, the synthesis and thermal treatment conditions were optimized on the basis of thermal gravimetric (TG) and differential scanning calorimetric (DSC) analysis performed on the dried gel and dried co-precipitated solid, respectively. The FSsg and FSpp powders were characterized by X-ray powder diffraction (XRD), indicating a high purity for both FSsg and FSpp powders. The morphology of FSsg and FSpp nanopowders was explored by scanning electron microscopy (SEM) coupled with energy dispersive X-ray spectroscopy (EDX) and atomic force microscopy (AFM). In vitro antibacterial activity was investigated using a targeted pathogen, namely Staphylococcus aureus (S. aureus) ATCC 6538 P as tested strain by broth dilution technique and inoculations on nutrient agar to highlight the bactericidal inhibitory effect. FSsg nanopowder has no inhibitory capacity, while FSpp produced inhibition, the effect being bactericidal at a concentration of 10 mg/mL. The superior bactericidal activity of FSpp against FSsg is due to variation in the own surface properties, such as specific surface area (SSA) and nano-regime particle size. The FSpp nanoparticles, NPs, obtained by co-precipitation method are reported for the first time as a novel bactericidal nanomaterial against S. aureus.
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Affiliation(s)
- Alexandra Avram
- Chemical Engineering Department, Faculty of Chemistry and Chemical Engineering, Research Center in Physical Chemistry, Babes-Bolyai University of Cluj-Napoca, 11 Arany J. Str, RO-400028, Cluj-Napoca, Romania
| | - Sorin Rapuntean
- University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, 3-5 Manastur Str, RO-400372, Cluj-Napoca, Romania
| | - Maria Gorea
- Chemical Engineering Department, Faculty of Chemistry and Chemical Engineering, Research Center in Physical Chemistry, Babes-Bolyai University of Cluj-Napoca, 11 Arany J. Str, RO-400028, Cluj-Napoca, Romania
| | - Gheorghe Tomoaia
- Orthopedics and Traumatology Department, Iuliu Hatieganu University of Medicine and Pharmacy, 47 Traian Mosoiu Str, RO-400132, Cluj-Napoca, Romania
- Academy of Romanian Scientists, 3 Ilfov Str, RO-050044, Bucharest, Romania
| | - Aurora Mocanu
- Chemical Engineering Department, Faculty of Chemistry and Chemical Engineering, Research Center in Physical Chemistry, Babes-Bolyai University of Cluj-Napoca, 11 Arany J. Str, RO-400028, Cluj-Napoca, Romania
| | - Ossi Horovitz
- Chemical Engineering Department, Faculty of Chemistry and Chemical Engineering, Research Center in Physical Chemistry, Babes-Bolyai University of Cluj-Napoca, 11 Arany J. Str, RO-400028, Cluj-Napoca, Romania
| | - Gheorghe Rapuntean
- University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, 3-5 Manastur Str, RO-400372, Cluj-Napoca, Romania
| | - Maria Tomoaia-Cotisel
- Chemical Engineering Department, Faculty of Chemistry and Chemical Engineering, Research Center in Physical Chemistry, Babes-Bolyai University of Cluj-Napoca, 11 Arany J. Str, RO-400028, Cluj-Napoca, Romania.
- Academy of Romanian Scientists, 3 Ilfov Str, RO-050044, Bucharest, Romania.
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Preharvest Environmental and Management Drivers of Multidrug Resistance in Major Bacterial Zoonotic Pathogens in Pastured Poultry Flocks. Microorganisms 2022; 10:microorganisms10091703. [PMID: 36144304 PMCID: PMC9505790 DOI: 10.3390/microorganisms10091703] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 07/25/2022] [Accepted: 08/18/2022] [Indexed: 12/25/2022] Open
Abstract
Due to nutritional benefits and perceived humane ways of treating the animals, the demand for antibiotic-free pastured poultry chicken has continued to be steadily rise. Despite the non-usage of antibiotics in pastured poultry broiler production, antibiotic resistance (AR) is reported in zoonotic poultry pathogens. However, factors that drive multidrug resistance (MDR) in pastured poultry are not well understood. In this study, we used machine learning and deep learning approaches to predict farm management practices and physicochemical properties of feces and soil that drive MDR in zoonotic poultry pathogens. Antibiotic use in agroecosystems is known to contribute to resistance. Evaluation of the development of resistance in environments that are free of antibiotics such as the all-natural, antibiotic-free, pastured poultry production systems described here is critical to understand the background AR in the absence of any selection pressure, i.e., basal levels of resistance. We analyzed 1635 preharvest (feces and soil) samples collected from forty-two pastured poultry flocks and eleven farms in the Southeastern United States. CDC National Antimicrobial Resistance Monitoring System guidelines were used to determine antimicrobial/multidrug resistance profiles of Salmonella, Listeria, and Campylobacter. A combination of two traditional machine learning (RandomForest and XGBoost) and three deep learning (Multi-layer Perceptron, Generative Adversarial Network, and Auto-Encoder) approaches identified critical farm management practices and environmental variables that drive multidrug resistance in poultry pathogens in broiler production systems that represents background resistance. This study enumerates management practices that contribute to AR and makes recommendations to potentially mitigate multidrug resistance and the prevalence of Salmonella and Listeria in pastured poultry.
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Gitarić J, Stanojević IM, Radanović DD, Crochet A, Ašanin DP, Jankovic V, Skaro-Bogojevic S, Djuran MI, Glišić BĐ. Cobalt(II) and magnesium(II) complexes with 1,3-pdta-type of ligands: influence of an alkyl substituent at 1,3-propanediamine chain on the structural and antimicrobial properties of the complex. J COORD CHEM 2022. [DOI: 10.1080/00958972.2022.2101365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Jelena Gitarić
- Faculty of Science, Department of Chemistry, University of Kragujevac, Kragujevac, Serbia
| | | | - Dušanka D. Radanović
- Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Belgrade, Serbia
| | - Aurélien Crochet
- Department of Chemistry, University of Fribourg, Fribourg, Switzerland
| | - Darko P. Ašanin
- Institute for Information Technologies Kragujevac, University of Kragujevac, Kragujevac, Serbia
| | - Vukasin Jankovic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Belgrade, Serbia
| | - Sanja Skaro-Bogojevic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Belgrade, Serbia
| | | | - Biljana Đ. Glišić
- Faculty of Science, Department of Chemistry, University of Kragujevac, Kragujevac, Serbia
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Ionic Strength of Methylcellulose-Based Films: An Alternative for Modulating Mechanical Performance and Hydrophobicity for Potential Food Packaging Application. POLYSACCHARIDES 2022. [DOI: 10.3390/polysaccharides3020026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The growing environmental concern with the inappropriate disposal of conventional plastics has driven the development of eco-friendly food packaging. However, the intrinsic characteristics of polymers of a renewable origin, e.g., poor mechanical properties, continue to render their practical application difficult. For this, the present work studied the influence of ionic strength (IS) from 0 to 500 mM to modulate the physicochemical properties of methylcellulose (MC). Moreover, for protection against biological risks, Nisin-Z was incorporated into MC’s polymeric matrices, providing an active function. The incorporation of salts (LiCl and MgCl2) promoted an increase in the equilibrium moisture content in the polymer matrix, which in turn acted as a plasticizing agent. In this way, films with a hydrophobic surface (98°), high true strain (85%), and low stiffness (1.6 mPa) can be manufactured by addition of salts, modulating the IS to 500 mM. Furthermore, films with an IS of 500 mM, established with LiCl, catalyzed antibacterial activity against E. coli, conferring synergism and extending protection against biological hazards. Therefore, we demonstrated that the IS control of MC dispersion presents a new alternative to achieve films with the synergism of antibacterial activity against Gram-negative bacteria in addition to flexibility, elasticity, and hydrophobicity required in various applications in food packaging.
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Lu Y, Zou W, Wang L, Xi X, Ma C, Chen X, Chen T, Shaw C, Zhang X, Zhou M. Kassporin-KS1: A Novel Pentadecapeptide from the Skin Secretion of Kassina senegalensis: Studies on the Structure-Activity Relationships of Site-Specific “Glycine-Lysine” Motif Insertions. Antibiotics (Basel) 2022; 11:antibiotics11020243. [PMID: 35203845 PMCID: PMC8868508 DOI: 10.3390/antibiotics11020243] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 02/07/2022] [Accepted: 02/11/2022] [Indexed: 12/07/2022] Open
Abstract
Due to the abuse of traditional antibiotics and the continuous mutation of microbial resistance genes, microbial infections have become serious problems for human health. Therefore, novel antibacterial agents are urgently required, and amphibian antimicrobial peptides (AMP) are among the most interesting potential antibacterial leads. In this research, a novel peptide, named kassporin-KS1 (generically QUB-1641), with moderate antibacterial activity against Gram-positive bacteria, was discovered in the skin secretion of the Senegal running frog, Kassina senegalensis. Using site-specific sequence enrichment with a motif “glycine-lysine” that frequently occurs in ranid frog temporin peptides, a series of QUB-1641 analogues were synthesized, and effects on selected bioactivities were studied. The greatest activity enhancement was obtained when the “glycine-lysine” motif was located at the eighth and ninth position as in QUB-1570.QUB-1570 had a broader antibacterial spectrum than QUB-1641, and was eight-fold more potent. Moreover, QUB-1570 inhibited S. aureus biofilm most effectively, and significantly enhanced the viability of insect larvae infected with S. aureus. When the “glycine-lysine” motif of QUB-1570 was substituted to reduce the helix ratio and positive charge, the antibacterial activities of these synthetic analogues decreased. These data revealed that the “glycine-lysine” motif at positions 8 and 9 had the greatest enhancing effect on the antibacterial properties of QUB-1570 through increasing positive charge and helix content. This research may provide strategies for the site’s selective amino acid modification of some natural peptides to achieve the desired enhancement of activity.
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Affiliation(s)
- Yueyang Lu
- School of Medicine & Holisitc Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China;
| | - Wanchen Zou
- School of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; (W.Z.); (L.W.); (X.X.); (C.M.); (X.C.); (T.C.); (C.S.)
| | - Lei Wang
- School of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; (W.Z.); (L.W.); (X.X.); (C.M.); (X.C.); (T.C.); (C.S.)
| | - Xinping Xi
- School of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; (W.Z.); (L.W.); (X.X.); (C.M.); (X.C.); (T.C.); (C.S.)
| | - Chengbang Ma
- School of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; (W.Z.); (L.W.); (X.X.); (C.M.); (X.C.); (T.C.); (C.S.)
| | - Xiaoling Chen
- School of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; (W.Z.); (L.W.); (X.X.); (C.M.); (X.C.); (T.C.); (C.S.)
| | - Tianbao Chen
- School of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; (W.Z.); (L.W.); (X.X.); (C.M.); (X.C.); (T.C.); (C.S.)
| | - Chris Shaw
- School of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; (W.Z.); (L.W.); (X.X.); (C.M.); (X.C.); (T.C.); (C.S.)
| | - Xu Zhang
- School of Medicine & Holisitc Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China;
- Correspondence: (X.Z.); (M.Z.)
| | - Mei Zhou
- School of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; (W.Z.); (L.W.); (X.X.); (C.M.); (X.C.); (T.C.); (C.S.)
- Correspondence: (X.Z.); (M.Z.)
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Mg.ATP-decorated ultrafine magnetic nanofibers: A bone scaffold with high osteogenic and antibacterial properties in the presence of an electromagnetic field. Colloids Surf B Biointerfaces 2021; 210:112256. [PMID: 34875469 DOI: 10.1016/j.colsurfb.2021.112256] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 11/27/2021] [Accepted: 11/29/2021] [Indexed: 12/27/2022]
Abstract
In this study, ultrafine magnetic nanofibers were developed for bone regeneration purposes. Nanofibers were acquired by electrospinning using a two-component nanofiber matrix (CP: chitosan (Cs) and polyvinyl alcohol (PVA)) containing different concentrations of succinate conjugated-magnetic hydroxyapatite nanocomposites (SMHA). Hybrid nanofibers (CP&SMHA) containing 5 mg ml-1 of SMHA nanocomposite showed well-defined properties in terms of physicochemical properties and cell behavior. Then, they were modified with adenosine 5'-triphosphate (ATP) and Mg2+ ions. The initial adhesion of mesenchymal stem cells and their proliferation rate on the surface of modified nanofibers (Mg.ATP.CP&SMHA) were significantly increased as compared to those of bare nanofibers. Analysis of common osteogenic markers such as alkaline phosphatase activity and the expression of Runt-related transcription factor 2 and osteocalcin confirmed the osteogenic efficacy enhancement of CP&SMHA nanofibers when they were functionalized with ATP and Mg2+. The utilization of the antagonist of purine receptor, P2X7, revealed that this receptor has a major role in the osteogenesis process induced by Mg.ATP.CP&SMHA. Moreover, the results showed that cell adhesion, proliferation, and differentiation improved as nanofibers were under the influence of the electromagnetic field (EMF), displaying synergistic effects in the process of bone formation. Mg.ATP.CP&SMHA also showed an antibacterial effect against gram-negative and gram-positive bacteria, Escherichia coli and Staphylococcus aureus, respectively. Considering the high osteogenic potential and antibacterial activity of Mg.ATP.CP&SMHA nanofibers particularly in combination with EMF, it can serve as a great candidate for use in bone tissue engineering applications.
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Rodrigues Arruda T, Fontes Pinheiro P, Ibrahim Silva P, Campos Bernardes P. Exclusive Raw Material for Beer Production? Addressing Greener Extraction Techniques, the Relevance, and Prospects of Hops (Humulus lupulus L.) for the Food Industry. FOOD BIOPROCESS TECH 2021. [DOI: 10.1007/s11947-021-02716-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Badica P, Batalu ND, Chifiriuc MC, Burdusel M, Grigoroscuta MA, Aldica GV, Pasuk I, Kuncser A, Popa M, Agostino A, Operti L, Padhi SK, Bonino V, Truccato M. Sintered and 3D-Printed Bulks of MgB 2-Based Materials with Antimicrobial Properties. Molecules 2021; 26:molecules26196045. [PMID: 34641589 PMCID: PMC8512174 DOI: 10.3390/molecules26196045] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 09/27/2021] [Accepted: 09/28/2021] [Indexed: 11/24/2022] Open
Abstract
Pristine high-density bulk disks of MgB2 with added hexagonal BN (10 wt.%) were prepared using spark plasma sintering. The BN-added samples are machinable by chipping them into desired geometries. Complex shapes of different sizes can also be obtained by the 3D printing of polylactic acid filaments embedded with MgB2 powder particles (10 wt.%). Our present work aims to assess antimicrobial activity quantified as viable cells (CFU/mL) vs. time of sintered and 3D-printed materials. In vitro antimicrobial tests were performed against the bacterial strains Escherichia coli ATCC 25922, Pseudomonas aeruginosa ATCC 27853, Staphylococcus aureus ATCC 25923, Enterococcus faecium DSM 13590, and Enterococcus faecalis ATCC 29212; and the yeast strain Candida parapsilosis ATCC 22019. The antimicrobial effects were found to depend on the tested samples and microbes, with E. faecium being the most resistant and E. coli the most susceptible.
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Affiliation(s)
- Petre Badica
- National Institute of Materials Physics, 405A Atomistilor Street, 077125 Magurele, Romania; (M.B.); (M.A.G.); (G.V.A.); (I.P.); (A.K.)
- Correspondence: (P.B.); (M.P.); Tel.: +40-21-3690185 (P.B.); +40-21-3690185 (M.P.)
| | - Nicolae Dan Batalu
- Faculty of Material Science and Engineering, University Politehnica of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania;
| | - Mariana Carmen Chifiriuc
- Faculty of Biology and The Research Institute of the University of Bucharest (ICUB), University of Bucharest, 91-95 Splaiul Independentei, 050095 Bucharest, Romania;
| | - Mihail Burdusel
- National Institute of Materials Physics, 405A Atomistilor Street, 077125 Magurele, Romania; (M.B.); (M.A.G.); (G.V.A.); (I.P.); (A.K.)
| | - Mihai Alexandru Grigoroscuta
- National Institute of Materials Physics, 405A Atomistilor Street, 077125 Magurele, Romania; (M.B.); (M.A.G.); (G.V.A.); (I.P.); (A.K.)
| | - Gheorghe Virgil Aldica
- National Institute of Materials Physics, 405A Atomistilor Street, 077125 Magurele, Romania; (M.B.); (M.A.G.); (G.V.A.); (I.P.); (A.K.)
| | - Iuliana Pasuk
- National Institute of Materials Physics, 405A Atomistilor Street, 077125 Magurele, Romania; (M.B.); (M.A.G.); (G.V.A.); (I.P.); (A.K.)
| | - Andrei Kuncser
- National Institute of Materials Physics, 405A Atomistilor Street, 077125 Magurele, Romania; (M.B.); (M.A.G.); (G.V.A.); (I.P.); (A.K.)
| | - Marcela Popa
- Faculty of Biology and The Research Institute of the University of Bucharest (ICUB), University of Bucharest, 91-95 Splaiul Independentei, 050095 Bucharest, Romania;
- Correspondence: (P.B.); (M.P.); Tel.: +40-21-3690185 (P.B.); +40-21-3690185 (M.P.)
| | - Angelo Agostino
- Physics and Chemistry Departments, University of Turin, 1-7 Via Pietro Giuria, 10125 Turin, Italy; (A.A.); (L.O.); (S.K.P.); (V.B.); (M.T.)
| | - Lorenza Operti
- Physics and Chemistry Departments, University of Turin, 1-7 Via Pietro Giuria, 10125 Turin, Italy; (A.A.); (L.O.); (S.K.P.); (V.B.); (M.T.)
| | - Santanu Kumar Padhi
- Physics and Chemistry Departments, University of Turin, 1-7 Via Pietro Giuria, 10125 Turin, Italy; (A.A.); (L.O.); (S.K.P.); (V.B.); (M.T.)
| | - Valentina Bonino
- Physics and Chemistry Departments, University of Turin, 1-7 Via Pietro Giuria, 10125 Turin, Italy; (A.A.); (L.O.); (S.K.P.); (V.B.); (M.T.)
- European Synchrotron Radiation Facility, 71 Avenue des Martyrs, 38000 Grenoble, France
| | - Marco Truccato
- Physics and Chemistry Departments, University of Turin, 1-7 Via Pietro Giuria, 10125 Turin, Italy; (A.A.); (L.O.); (S.K.P.); (V.B.); (M.T.)
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13
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Chandler L, Harford AJ, Hose GC, Humphrey CL, Chariton A, Greenfield P, Davis J. Saline mine-water alters the structure and function of prokaryote communities in shallow groundwater below a tropical stream. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 284:117318. [PMID: 34052601 DOI: 10.1016/j.envpol.2021.117318] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 04/30/2021] [Accepted: 05/03/2021] [Indexed: 06/12/2023]
Abstract
Bacteria and archaea (prokaryotes) are vital components for maintaining healthy function of groundwater ecosystems. The prokaryotic community composition and associated putative functional processes were examined in a shallow sandy aquifer in a wet-dry tropical environment. The aquifer had a contaminated gradient of saline mine-water, which primarily consisted of elevated magnesium (Mg2+) and sulfate (SO42-), although other major ions and trace metals were also present. Groundwaters were sampled from piezometers, approximately 2 m in depth, located in the creek channel upstream and downstream of the mine-water influence. Sampling occurred during the dry-season when only subsurface water flow was present. Next generation sequencing was used to analyse the prokaryote assemblages using 16S rDNA and metabolic functions were predicted with FAPROTAX. Significant changes in community composition and functional processes were observed with exposure to mine-waters. Communities in the exposed sites had significantly lower relative abundance of methanotrophs such as Methylococcaceae and methanogens (Methanobacteriaceae), but higher abundance in Nitrososphaeraceae, associated with nitrification, indicating potentially important changes in the biogeochemistry of the exposed sites. The changes were most strongly correlated with concentrations of SO42-, Mg2+ and Na+. This knowledge allows an assessment of the risk of mine-water contamination to groundwater ecosystem function and aids mine-water management.
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Affiliation(s)
- Lisa Chandler
- Research Institute for the Environment and Livelihoods, College of Engineering, IT & Environment, Charles Darwin University, Darwin, Northern Territory, Australia; Supervising Scientist Branch, Department of Agriculture, Water and the Environment, Darwin, Northern Territory, Australia.
| | - Andrew J Harford
- Supervising Scientist Branch, Department of Agriculture, Water and the Environment, Darwin, Northern Territory, Australia
| | - Grant C Hose
- Department of Biological Sciences, Macquarie University, Sydney, New South Wales, Australia
| | - Chris L Humphrey
- Supervising Scientist Branch, Department of Agriculture, Water and the Environment, Darwin, Northern Territory, Australia
| | - Anthony Chariton
- Department of Biological Sciences, Macquarie University, Sydney, New South Wales, Australia
| | - Paul Greenfield
- Commonwealth Scientific and Industrial Research Organisation (CSIRO), Canberra, Australian Capital Territory, Australia
| | - Jenny Davis
- Research Institute for the Environment and Livelihoods, College of Engineering, IT & Environment, Charles Darwin University, Darwin, Northern Territory, Australia
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14
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Truskewycz A, Truong VK, Ball AS, Houshyar S, Nassar N, Yin H, Murdoch BJ, Cole I. Fluorescent Magnesium Hydroxide Nanosheet Bandages with Tailored Properties for Biocompatible Antimicrobial Wound Dressings and pH Monitoring. ACS APPLIED MATERIALS & INTERFACES 2021; 13:27904-27919. [PMID: 34105937 DOI: 10.1021/acsami.1c05908] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Magnesium hydroxide (Mg(OH)2) is hailed as a cheap and biocompatible material with antimicrobial potential; however, research aimed at instilling additional properties and functionality to this material is scarce. In this work, we synthesized novel, fluorescent magnesium hydroxide nanosheets (Mg(OH)2-NS) with a morphology that closely resembles that of graphene oxide. These multifunctional nanosheets were employed as a potent antimicrobial agent against several medically relevant bacterial and fungal species, particularly on solid surfaces. Their strong fluorescence signature correlates to their hydroxide makeup and can therefore be used to assess their degradation and functional antimicrobial capacity. Furthermore, their pH-responsive change in fluorescence can potentially act as a pH probe for wound acidification, which is characteristic of healthy wound healing. These fluorescent antimicrobial nanosheets were stably integrated into biocompatible electrospun fibers and agarose gels to add functionality to the material. This reinforces the suitability of the material to be used as antimicrobial bandages and gels. The biocompatibility of the Mg(OH)2-NS for topical medical applications was supported by its noncytotoxic action on human keratinocyte (HaCaT) cells.
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Affiliation(s)
- Adam Truskewycz
- Advanced Manufacturing and Fabrication, School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
| | - Vi Khanh Truong
- School of Science, STEM College, RMIT University, Melbourne, VIC 3000, Australia
| | - Andrew S Ball
- ARC Training Centre for the Transformation of Australia Biosolids Resource, RMIT University, Melbourne, VIC 3000, Australia
| | - Shadi Houshyar
- Advanced Manufacturing and Fabrication, School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
- School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
| | - Nazim Nassar
- Biosciences & Food Technology, STEM College, RMIT University, Bundoora West Campus, Melbourne, VIC 3000, Australia
| | - Hong Yin
- Advanced Manufacturing and Fabrication, School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
| | - Billy J Murdoch
- RMIT Microscopy and Microanalysis Facility, RMIT University, Melbourne, VIC 3000, Australia
| | - Ivan Cole
- Advanced Manufacturing and Fabrication, School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
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15
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Cheng YW, Chong CC, Lam MK, Ayoub M, Cheng CK, Lim JW, Yusup S, Tang Y, Bai J. Holistic process evaluation of non-conventional palm oil mill effluent (POME) treatment technologies: A conceptual and comparative review. JOURNAL OF HAZARDOUS MATERIALS 2021; 409:124964. [PMID: 33418292 DOI: 10.1016/j.jhazmat.2020.124964] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/08/2020] [Accepted: 12/23/2020] [Indexed: 06/12/2023]
Abstract
Thriving oil palm agroindustry comes at a price of voluminous waste generation, with palm oil mill effluent (POME) as the most cumbersome waste due to its liquid state, high strength, and great discharge volume. In view of incompetent conventional ponding treatment, a voluminous number of publications on non-conventional POME treatments is filed in the Scopus database, mainly working on alternative or polishing POME treatments. In dearth of such comprehensive review, all the non-conventional POME treatments are rigorously reviewed in a conceptual and comparative manner. Herein, non-conventional POME treatments are sorted into the five major routes, viz. biological (bioconversions - aerobic/anaerobic biodegradation), physical (flotation & membrane filtration), chemical (Fenton oxidation), physicochemical (photooxidation, steam reforming, coagulation-flocculation, adsorption, & ultrasonication), and bioelectrochemical (microbial fuel cell) pathways. For aforementioned treatments, the constraints, pros, and cons are qualitatively and quantitatively (with compiled performance data) detailed to indicate their process maturity. Authors recommended (i) bioconversions, adsorption, and steam reforming as primary treatments, (ii) flotation and ultrasonication as pretreatments, (iii) Fenton oxidation, photooxidation, and membrane filtration as polishing treatments, and (iv) microbial fuel cell and coagulation-flocculation as pretreatment or polishing treatment. Life cycle assessments are required to evaluate the environmental, economic, and energy aspects of each process.
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Affiliation(s)
- Yoke Wang Cheng
- Department of Chemical Engineering, HiCoE-Centre for Biofuel and Biochemical Research, Institute of Self-Sustainable Building, University Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia.
| | - Chi Cheng Chong
- Department of Chemical Engineering, HiCoE-Centre for Biofuel and Biochemical Research, Institute of Self-Sustainable Building, University Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia
| | - Man Kee Lam
- Department of Chemical Engineering, HiCoE-Centre for Biofuel and Biochemical Research, Institute of Self-Sustainable Building, University Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia
| | - Muhammad Ayoub
- Department of Chemical Engineering, HiCoE-Centre for Biofuel and Biochemical Research, Institute of Self-Sustainable Building, University Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia
| | - Chin Kui Cheng
- Department of Chemical Engineering, College of Engineering, Khalifa University, P. O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Jun Wei Lim
- Department of Fundamental and Applied Sciences, HICoE-Centre for Biofuel and Biochemical Research (CBBR), Institute of Self-Sustainable Building, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia
| | - Suzana Yusup
- Department of Chemical Engineering, HiCoE-Centre for Biofuel and Biochemical Research, Institute of Self-Sustainable Building, University Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia
| | - Yuanyuan Tang
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, 1088 Xueyuan Blvd, Nanshan District, Shenzhen 518055, PR China
| | - Jiaming Bai
- Shenzhen Key Laboratory for Additive Manufacturing of High-Performance Materials, Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055, China
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16
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Herber V, Okutan B, Antonoglou G, Sommer NG, Payer M. Bioresorbable Magnesium-Based Alloys as Novel Biomaterials in Oral Bone Regeneration: General Review and Clinical Perspectives. J Clin Med 2021; 10:jcm10091842. [PMID: 33922759 PMCID: PMC8123017 DOI: 10.3390/jcm10091842] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/15/2021] [Accepted: 04/19/2021] [Indexed: 02/07/2023] Open
Abstract
Bone preservation and primary regeneration is a daily challenge in the field of dental medicine. In recent years, bioresorbable metals based on magnesium (Mg) have been widely investigated due to their bone-like modulus of elasticity, their high biocompatibility, antimicrobial, and osteoconductive properties. Synthetic Mg-based biomaterials are promising candidates for bone regeneration in comparison with other currently available pure synthetic materials. Different alloys based on Mg were developed to fit clinical requirements. In parallel, advances in additive manufacturing offer the possibility to fabricate experimentally bioresorbable metallic porous scaffolds. This review describes the promising clinical results of resorbable Mg-based biomaterials for bone repair in osteosynthetic application and discusses the perspectives of use in oral bone regeneration.
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Affiliation(s)
- Valentin Herber
- Department of Dentistry and Oral Health, Division of Oral Surgery and Orthodontics, Medical University of Graz, Billrothgasse 4, 8010 Graz, Austria; (G.A.); (M.P.)
- Department of Orthopaedics and Traumatology, Medical University of Graz, Auenbruggerplatz 5/6, 8036 Graz, Austria; (B.O.); (N.G.S.)
- Correspondence:
| | - Begüm Okutan
- Department of Orthopaedics and Traumatology, Medical University of Graz, Auenbruggerplatz 5/6, 8036 Graz, Austria; (B.O.); (N.G.S.)
| | - Georgios Antonoglou
- Department of Dentistry and Oral Health, Division of Oral Surgery and Orthodontics, Medical University of Graz, Billrothgasse 4, 8010 Graz, Austria; (G.A.); (M.P.)
| | - Nicole G. Sommer
- Department of Orthopaedics and Traumatology, Medical University of Graz, Auenbruggerplatz 5/6, 8036 Graz, Austria; (B.O.); (N.G.S.)
| | - Michael Payer
- Department of Dentistry and Oral Health, Division of Oral Surgery and Orthodontics, Medical University of Graz, Billrothgasse 4, 8010 Graz, Austria; (G.A.); (M.P.)
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Abstract
Dietary trace minerals are pivotal and hold a key role in numerous metabolic processes. Trace mineral deficiencies (except for iodine, iron, and zinc) do not often develop spontaneously in adults on ordinary diets; infants are more vulnerable because their growth is rapid and intake varies. Trace mineral imbalances can result from hereditary disorders (e.g., hemochromatosis, Wilson disease), kidney dialysis, parenteral nutrition, restrictive diets prescribed for people with inborn errors of metabolism, or various popular diet plans. The Special Issue "Dietary Trace Minerals" comprised 13 peer-reviewed papers on the most recent evidence regarding the dietary intake of trace minerals, as well as their effect toward the prevention and treatment of non-communicable diseases. Original contributions and literature reviews further demonstrated the crucial and central part that dietary trace minerals play in human health and development. This editorial provides a brief and concise overview that addresses and summarizes the content of the Dietary Trace Minerals Special Issue.
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