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He P, Huang S, Wang R, Yang Y, Yang S, Wang Y, Qi M, Li J, Liu X, Zhang X, Feng M. Novel nitroxoline derivative combating resistant bacterial infections through outer membrane disruption and competitive NDM-1 inhibition. Emerg Microbes Infect 2024; 13:2294854. [PMID: 38085067 PMCID: PMC10829846 DOI: 10.1080/22221751.2023.2294854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 12/11/2023] [Indexed: 02/01/2024]
Abstract
ABSTRACTNew Delhi metallo-β-lactamase-1 (NDM-1) has rapidly disseminated worldwide, leading to multidrug resistance and worse clinical prognosis. Designing and developing effective NDM-1 inhibitors is a critical and urgent challenge. In this study, we constructed a library of long-lasting nitroxoline derivatives and identified ASN-1733 as a promising dual-functional antibiotic. ASN-1733 can effectively compete for Ca2+ on the bacterial surface, causing the detachment of lipopolysaccharides (LPS), thereby compromising the outer membrane integrity and permeability and exhibiting broad-spectrum bactericidal activity. Moreover, ASN-1733 demonstrated wider therapeutic applications than nitroxoline in mouse sepsis, thigh and mild abdominal infections. Furthermore, ASN-1733 can effectively inhibit the hydrolytic capability of NDM-1 and exhibits synergistic killing effects in combination with meropenem against NDM-1 positive bacteria. Mechanistic studies using enzymatic experiments and computer simulations revealed that ASN-1733 can bind to key residues on Loop10 of NDM-1, hindering substrate entry into the enzyme's active site and achieving potent inhibitory activity (Ki = 0.22 µM), even in the presence of excessive Zn2+. These findings elucidate the antibacterial mechanism of nitroxoline and its derivatives, expand their potential application in the field of antibacterial agents and provide new insights into the development of novel NDM-1 inhibitors.
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Affiliation(s)
- Peng He
- Department of Biological Medicines & Shanghai Engineering Research Center of Immunotherapeutics, Fudan University School of Pharmacy, Shanghai, People’s Republic of China
| | - Sijing Huang
- Department of Biological Medicines & Shanghai Engineering Research Center of Immunotherapeutics, Fudan University School of Pharmacy, Shanghai, People’s Republic of China
| | - Rui Wang
- Department of Biological Medicines & Shanghai Engineering Research Center of Immunotherapeutics, Fudan University School of Pharmacy, Shanghai, People’s Republic of China
| | - Yunkai Yang
- Department of Biological Medicines & Shanghai Engineering Research Center of Immunotherapeutics, Fudan University School of Pharmacy, Shanghai, People’s Republic of China
| | - Shangye Yang
- Department of Biological Medicines & Shanghai Engineering Research Center of Immunotherapeutics, Fudan University School of Pharmacy, Shanghai, People’s Republic of China
| | - Yue Wang
- Department of Biological Medicines & Shanghai Engineering Research Center of Immunotherapeutics, Fudan University School of Pharmacy, Shanghai, People’s Republic of China
| | - Mengya Qi
- Department of Biological Medicines & Shanghai Engineering Research Center of Immunotherapeutics, Fudan University School of Pharmacy, Shanghai, People’s Republic of China
| | - Jiyang Li
- Department of Biological Medicines & Shanghai Engineering Research Center of Immunotherapeutics, Fudan University School of Pharmacy, Shanghai, People’s Republic of China
| | - Xiaofen Liu
- Institute of Antibiotics, Huashan Hospital, Fudan University, Shanghai, People’s Republic of China
| | - Xuyao Zhang
- Department of Biological Medicines & Shanghai Engineering Research Center of Immunotherapeutics, Fudan University School of Pharmacy, Shanghai, People’s Republic of China
| | - Meiqing Feng
- Department of Biological Medicines & Shanghai Engineering Research Center of Immunotherapeutics, Fudan University School of Pharmacy, Shanghai, People’s Republic of China
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Pan Z, Dai C, Li W. Material-based treatment strategies against intraosseous implant biofilm infection. Biochem Biophys Rep 2024; 39:101764. [PMID: 39040541 PMCID: PMC11261528 DOI: 10.1016/j.bbrep.2024.101764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 05/22/2024] [Accepted: 06/25/2024] [Indexed: 07/24/2024] Open
Abstract
Implant-associated infections present a significant clinical obstacle for orthopedic practitioners, with bacterial biofilm formation serving as a pivotal factor in the initiation, progression, and management of such infections. Conventional approaches have proven inadequate in fully eradicating biofilm-related infections. Consequently, novel material-based therapeutic strategies have been developed, encompassing the utilization of antimicrobial agents, delivery vehicles, and synergistic antibacterial systems. In this review, we provide a succinct overview of recent advancements in anti-biofilm strategies, with the aim of offering insights that may aid in the treatment of intraosseous implant infections.
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Affiliation(s)
- Zhuoer Pan
- Department of Orthopedic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou City, Zhejiang Province, PR China
- Orthopedics Research Institute of Zhejiang University, Hangzhou City, Zhejiang Province, PR China
| | - Chengxin Dai
- Department of Orthopedic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou City, Zhejiang Province, PR China
- Orthopedics Research Institute of Zhejiang University, Hangzhou City, Zhejiang Province, PR China
| | - Weixu Li
- Department of Orthopedic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou City, Zhejiang Province, PR China
- Orthopedics Research Institute of Zhejiang University, Hangzhou City, Zhejiang Province, PR China
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Al‐Asfour A, Karched M, Qasim SSB, Zafiropoulos G. Adhesion of Candida albicans on PTFE membranes used in guided bone regeneration. Clin Exp Dent Res 2024; 10:e902. [PMID: 39014549 PMCID: PMC11252019 DOI: 10.1002/cre2.902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Revised: 02/28/2024] [Accepted: 03/24/2024] [Indexed: 07/18/2024] Open
Abstract
OBJECTIVES Guided bone regeneration (GBR) is a core procedure used to regenerate bone defects. The aim of the study was to investigate the adherence of Candida albicans on six commercially available polytetrafluoroethylene (PTFE) membranes used in GBR procedures and the subsequent clinical consequences. MATERIALS AND METHODS Six commercially available PTFE membranes were tested. Two of the membranes had a textured surface and the other four a plane, nontextured one. C. albicans (ATCC 24433) was cultured for 24 h, and its cell surface hydrophobicity was assessed using a modified method. C. albicans adhesion to membrane discs was studied by scanning electron microscopy (SEM) and real-time polymerase chain reaction (PCR). RESULTS C. albicans was found to be hydrophobic (77.25%). SEM analysis showed that C. albicans adherence to all membranes examined was characterized by patchy, scattered, and small clustered patterns except for one nontextured membrane with a most rough surface in which a thick biofilm was observed. Real-time PCR quantification revealed significantly greater adhesion of C. albicans cells to PTFE membranes than the control membrane (p ≤ .001) with the membranes having a textured surface exhibiting the highest count of 2680 × 104 cells/ml compared to the count of 707 × 104 cells/mL on those with a nontextured one (p ≤ .001). One membrane with nontextured surface, but with most rough surface was found to exhibit the highest count of 3010 × 104 cells/ml (p ≤ .05). CONCLUSION The results of this study indicate that C. albicans adhesion on membranes' surfaces depends on the degree of surface roughness and/or on the presence of a texture. Textured PTFE membranes and/or membranes high roughness showed significantly more adhered C. albicans cells. These findings can impact the surgeon's choice of GBR membrane and postoperative maintenance.
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Affiliation(s)
- Adel Al‐Asfour
- Department of Surgical Sciences, College of DentistryKuwait UniversitySafatKuwait
| | - Maribasappa Karched
- Department of Bioclinical Sciences, College of DentistryKuwait UniversitySafatKuwait
| | - Syed Saad Bin Qasim
- Department of Bioclinical Sciences, College of DentistryKuwait UniversitySafatKuwait
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Fernández-Grajera M, Pacha-Olivenza MA, Fernández-Calderón MC, González-Martín ML, Gallardo-Moreno AM. Dynamic Adhesive Behavior and Biofilm Formation of Staphylococcus aureus on Polylactic Acid Surfaces in Diabetic Environments. MATERIALS (BASEL, SWITZERLAND) 2024; 17:3349. [PMID: 38998429 PMCID: PMC11243244 DOI: 10.3390/ma17133349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2024] [Revised: 06/26/2024] [Accepted: 07/02/2024] [Indexed: 07/14/2024]
Abstract
Interest in biodegradable implants has focused attention on the resorbable polymer polylactic acid. However, the risk of these materials promoting infection, especially in patients with existing pathologies, needs to be monitored. The enrichment of a bacterial adhesion medium with compounds that are associated with human pathologies can help in understanding how these components affect the development of infectious processes. Specifically, this work evaluates the influence of glucose and ketone bodies (in a diabetic context) on the adhesion dynamics of S. aureus to the biomaterial polylactic acid, employing different approaches and discussing the results based on the physical properties of the bacterial surface and its metabolic activity. The combination of ketoacidosis and hyperglycemia (GK2) appears to be the worst scenario: this system promotes a state of continuous bacterial colonization over time, suppressing the stationary phase of adhesion and strengthening the attachment of bacteria to the surface. In addition, these supplements cause a significant increase in the metabolic activity of the bacteria. Compared to non-enriched media, biofilm formation doubles under ketoacidosis conditions, while in the planktonic state, it is glucose that triggers metabolic activity, which is practically suppressed when only ketone components are present. Both information must be complementary to understand what can happen in a real system, where planktonic bacteria are the ones that initially colonize a surface, and, subsequently, these attached bacteria end up forming a biofilm. This information highlights the need for good monitoring of diabetic patients, especially if they use an implanted device made of PLA.
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Affiliation(s)
- María Fernández-Grajera
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 06006 Badajoz, Spain; (M.F.-G.); (M.A.P.-O.); (M.C.F.-C.); (A.M.G.-M.)
- University Institute of Extremadura Sanity Research (INUBE), 06006 Badajoz, Spain
| | - Miguel A. Pacha-Olivenza
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 06006 Badajoz, Spain; (M.F.-G.); (M.A.P.-O.); (M.C.F.-C.); (A.M.G.-M.)
- University Institute of Extremadura Sanity Research (INUBE), 06006 Badajoz, Spain
- Department of Biomedical Science, University of Extremadura, 06006 Badajoz, Spain
| | - María Coronada Fernández-Calderón
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 06006 Badajoz, Spain; (M.F.-G.); (M.A.P.-O.); (M.C.F.-C.); (A.M.G.-M.)
- University Institute of Extremadura Sanity Research (INUBE), 06006 Badajoz, Spain
- Department of Biomedical Science, University of Extremadura, 06006 Badajoz, Spain
| | - María Luisa González-Martín
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 06006 Badajoz, Spain; (M.F.-G.); (M.A.P.-O.); (M.C.F.-C.); (A.M.G.-M.)
- University Institute of Extremadura Sanity Research (INUBE), 06006 Badajoz, Spain
- Department of Applied Physics, University of Extremadura, 06006 Badajoz, Spain
| | - Amparo M. Gallardo-Moreno
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 06006 Badajoz, Spain; (M.F.-G.); (M.A.P.-O.); (M.C.F.-C.); (A.M.G.-M.)
- University Institute of Extremadura Sanity Research (INUBE), 06006 Badajoz, Spain
- Department of Applied Physics, University of Extremadura, 06006 Badajoz, Spain
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Gil ACK, Merino EAD, Costa DP, Giracca CN, Mazzon R, Magrin GL, de Almeida J, Benfatti CAM. A Novel Device for the Evaluation of In Vitro Bacterial Colonization in Membranes for Guided Tissue and Bone Regeneration. Dent J (Basel) 2024; 12:202. [PMID: 39056989 PMCID: PMC11275268 DOI: 10.3390/dj12070202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 06/19/2024] [Accepted: 06/26/2024] [Indexed: 07/28/2024] Open
Abstract
Purpose: To evaluate, in vitro, the efficiency of a novel apparatus to test the adherence and penetration of bacteria on different membranes for guided regeneration. Methodology: To create the 3D device, Computer Aided Design/Computer Aided Manufacturing (CAD/CAM) systems were used. Three types of biomaterials were tested (n = 6): (DT) a collagen membrane; (DS) a polymer membrane; and (LP) a dense polytetrafluoroethylene barrier. The biomaterials were adapted to the apparatuses and challenged with two different monospecies bacterial culture of A. actinomycetemcomitans b and S. mutans. After 2 h, bacterial adherence and penetration were quantified by counting the number of colony-forming units (CFUs). Two specimens from each group were used for image analysis using Confocal Laser Scanning Microscopy. Statistical analysis was performed. Findings: The DS group had a higher adherence of S. mutans compared to A. actinomycetemcomitans b (p = 0.05). There was less adherence of A. actinomycetemcomitans b in the DS group, compared to the LP (p = 0.011) and DT (p < 0.001) groups. Only the membranes allowed penetration, which was blocked by barriers. The DT group allowed a greater penetration of S. mutans to occur compared to A. actinomycetemcomitans b (p = 0.009), which showed a higher penetration into the DS membranes compared to S. mutans (p = 0.016). The penetration of A. actinomycetemcomitans b through DS was higher compared to its penetration through DT and LP (p < 0.01 for both). DT and DS allowed a greater penetration of S. mutans to occur compared to LP, which prevented both bacterial species from penetrating. Conclusion: The apparatus allowed for the settlement and complete sealing of the biomaterials, enabling standardization.
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Affiliation(s)
- Ana Clara Kuerten Gil
- Department of Implant Dentistry, Federal University of Santa Catarina, Florianópolis 88040-900, Brazil; (A.C.K.G.); (C.A.M.B.)
| | - Eugenio A. D. Merino
- Department of Production Engineering, Federal University of Santa Catarina, Florianópolis 88040-900, Brazil; (E.A.D.M.); (D.P.C.); (C.N.G.)
| | - Diogo Pontes Costa
- Department of Production Engineering, Federal University of Santa Catarina, Florianópolis 88040-900, Brazil; (E.A.D.M.); (D.P.C.); (C.N.G.)
| | - César Nunes Giracca
- Department of Production Engineering, Federal University of Santa Catarina, Florianópolis 88040-900, Brazil; (E.A.D.M.); (D.P.C.); (C.N.G.)
| | - Ricardo Mazzon
- Department of Microbiology, Federal University of Santa Catarina, Florianópolis 88040-900, Brazil;
| | - Gabriel Leonardo Magrin
- Department of Implant Dentistry, Federal University of Santa Catarina, Florianópolis 88040-900, Brazil; (A.C.K.G.); (C.A.M.B.)
| | - Josiane de Almeida
- Department of Endodontics, University of South Santa Catarina, Florianópolis 88010-010, Brazil;
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Chen J, Ren J, Wu Y, Hu N, Zhao F, Zhang L. Wet adhesive hydrogels based on niobium carbide for experimental research of oral mucosal impairment. RSC Adv 2024; 14:12935-12946. [PMID: 38650683 PMCID: PMC11033722 DOI: 10.1039/d4ra01352b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Accepted: 04/13/2024] [Indexed: 04/25/2024] Open
Abstract
Oral mucosal impairment is a prevalent oral disease that frequently causes pain for patients. Conventional treatments have limited effectiveness and can cause adverse reactions. Furthermore, the moist and dynamic nature of the oral mucosal environment makes persistent adherence of conventional materials challenging, which can affect treatment efficacy. In this study, we investigated the potential of a NbC/TA-GelMA hydrogel system, where niobium carbide (NbC) and tannic acid (TA) were added to gelatin methacryloyl (GelMA), for repairing oral mucosal impairment. The wet adhesion properties of NbC/TA-GelMA hydrogels were confirmed by the inclusion of TA with a catechol-rich group. In addition, the photothermal effect of NbC/TA-GelMA hydrogel under near-infrared light, synergizing with TA, provided sustained antibacterial action. Furthermore, the NbC/TA-GelMA hydrogel effectively healed damaged oral mucosa of rats.
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Affiliation(s)
- Jiayuan Chen
- First Affiliated Hospital of Harbin Medical University, College of Stomatology, Harbin Medical University No. 143 Yiman Street, Nangang District Harbin 150001 China
| | - Junyu Ren
- Oral Implant Center, Second Affiliated Hospital of Harbin Medical University, Harbin Medical University Harbin Heilongjiang China
| | - Yingjie Wu
- Key Laboratory of Microsystems and Microstructures Manufacturing (Ministry of Education), School of Medicine and Health, Harbin Institute of Technology No. 92 XiDaZhi Street Harbin 150001 China
| | - Narisu Hu
- Oral Implant Center, Second Affiliated Hospital of Harbin Medical University, Harbin Medical University Harbin Heilongjiang China
| | - Fang Zhao
- Department of Dentistry, Second Affiliated Hospital of Harbin Medical University, Harbin Medical University Harbin Heilongjiang China
| | - Lin Zhang
- First Affiliated Hospital of Harbin Medical University, College of Stomatology, Harbin Medical University No. 143 Yiman Street, Nangang District Harbin 150001 China
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Radovic R, Begic G, Blagojevic SL, Karleusa L, Spalj S, Gobin I. Temporal dynamics of adhesion of oral bacteria to orthodontic appliances. Dent Mater J 2023:2022-235. [PMID: 37271541 DOI: 10.4012/dmj.2022-235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Adhesion of the most common dental biofilm bacteria to alloys used in orthodontics in relation to surface characteristics was analyzed. Streptococcus mutans (S. mutans), Streptococcus oralis (S. oralis), Veillonella parvula (V. parvula), and Aggregatibacter actinomycetemcomitans (A. actynomicetemcomitans) were incubated for 4 h with nickel-titanium (NiTi) and stainless-steel (SS) wires. The surface roughness and free energy of the alloys, as well as the hydrophobicity of the alloys and bacteria, were assessed. NiTi had higher surface free energy and rougher (p<0.001) and more hydrophilic surfaces than SS (p<0.001). The hydrophobic properties of the bacteria decreased in the following order: V. parvula>S. oralis>S. mutans>A. actynomicetemcomitans. Bacterial adhesion generally increased over time, though this pattern was influenced by the type of alloy and the bacteria present (p<0.001). In a multiple linear regression, the principal predictor of adhesion was bacterial hydrophobicity (p<0.001), followed by time (p<0.001); alloy surface characteristics had a low influence.
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Affiliation(s)
- Renea Radovic
- Department of Orthodontics, Faculty of Dental Medicine, University of Rijeka
| | - Gabrijela Begic
- Department of Microbiology and Parasitology, Faculty of Medicine, University of Rijeka
| | - Sanja Lucic Blagojevic
- Department of Surface Engineering of Polymer Materials, Faculty of Chemical Engineering and Technology, University of Zagreb
| | - Ljerka Karleusa
- Department of Physiology and Immunology, Faculty of Medicine, University of Rijeka
| | - Stjepan Spalj
- Department of Orthodontics, Faculty of Dental Medicine, University of Rijeka
- Department of Dental Medicine, Faculty of Dental Medicine and Health, J. J. Strossmayer University of Osijek
| | - Ivana Gobin
- Department of Microbiology and Parasitology, Faculty of Medicine, University of Rijeka
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Begić G, Badovinac IJ, Karleuša L, Kralik K, Cvijanovic Peloza O, Kuiš D, Gobin I. Streptococcus salivarius as an Important Factor in Dental Biofilm Homeostasis: Influence on Streptococcus mutans and Aggregatibacter actinomycetemcomitans in Mixed Biofilm. Int J Mol Sci 2023; 24:ijms24087249. [PMID: 37108414 PMCID: PMC10139097 DOI: 10.3390/ijms24087249] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 04/11/2023] [Accepted: 04/12/2023] [Indexed: 04/29/2023] Open
Abstract
A disturbed balance within the dental biofilm can result in the dominance of cariogenic and periodontopathogenic species and disease development. Due to the failure of pharmacological treatment of biofilm infection, a preventive approach to promoting healthy oral microbiota is necessary. This study analyzed the influence of Streptococcus salivarius K12 on the development of a multispecies biofilm composed of Streptococcus mutans, S. oralis and Aggregatibacter actinomycetemcomitans. Four different materials were used: hydroxyapatite, dentin and two dense polytetrafluoroethylene (d-PTFE) membranes. Total bacteria, individual species and their proportions in the mixed biofilm were quantified. A qualitative analysis of the mixed biofilm was performed using scanning electron microscopy (SEM) and confocal laser scanning microscopy (CLSM). The results showed that in the presence of S. salivarius K 12 in the initial stage of biofilm development, the proportion of S. mutans was reduced, which resulted in the inhibition of microcolony development and the complex three-dimensional structure of the biofilm. In the mature biofilm, a significantly lower proportion of the periodontopathogenic species A. actinomycetemcomitans was found in the salivarius biofilm. Our results show that S. salivarius K 12 can inhibit the growth of pathogens in the dental biofilm and help maintain the physiological balance in the oral microbiome.
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Affiliation(s)
- Gabrijela Begić
- Department of Microbiology and Parasitology, Faculty of Medicine, University of Rijeka, 51000 Rijeka, Croatia
| | - Ivana Jelovica Badovinac
- Faculty of Physics and Centre for Micro- and Nanosciences and Technologies, University of Rijeka, 51000 Rijeka, Croatia
| | - Ljerka Karleuša
- Department of Physiology and Immunology, Faculty of Medicine, University of Rijeka, 51000 Rijeka, Croatia
| | - Kristina Kralik
- Department of Medical Statistics and Medical Informatics, Faculty of Medicine, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia
| | | | - Davor Kuiš
- Department of Periodontology, Faculty of Dental Medicine, University of Rijeka, 51000 Rijeka, Croatia
- Department of Dental Medicine, Faculty of Dental Medicine and Health, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia
- Clinical Hospital Centre, 51000 Rijeka, Croatia
| | - Ivana Gobin
- Department of Microbiology and Parasitology, Faculty of Medicine, University of Rijeka, 51000 Rijeka, Croatia
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Dong Y, Yao L, Cai L, Jin M, Forouzanfar T, Wu L, Liu J, Wu G. Antimicrobial and Pro-Osteogenic Coaxially Electrospun Magnesium Oxide Nanoparticles-Polycaprolactone /Parathyroid Hormone-Polycaprolactone Composite Barrier Membrane for Guided Bone Regeneration. Int J Nanomedicine 2023; 18:369-383. [PMID: 36700148 PMCID: PMC9869899 DOI: 10.2147/ijn.s395026] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 12/24/2022] [Indexed: 01/21/2023] Open
Abstract
Introduction An antibacterial and pro-osteogenic coaxially electrospun nanofiber guided bone regeneration (GBR) membrane was fabricated to satisfy the complicated and phased requirements of GBR process. Methods In this study, we synthesize dual-functional coaxially electrospun nanofiber GBR membranes by encapsulating parathyroid hormone (PTH) in the core layer and magnesium oxide nanoparticles (MgONPs) in the shell layer (MgONPs-PCL/PTH-PCL). Herein, the physicochemical characterization of MgONPs-PCL/PTH-PCL, the release rates of MgONPs and PTH, and antibacterial efficiency of the new membrane were evaluated. Furthermore, the pro-osteogenicity of the membranes was assessed both in-vitro and in-vivo. Results We successfully fabricated a coaxially electrospun nanofiber MgONPs-PCL/PTH-PCL membrane with the majority of nanofibers (>65%) ranged from 0.40~0.60μm in diameter. MgONPs-PCL/PTH-PCL showed outstanding antibacterial potential against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) through the release of MgONPs. We also discovered that the incorporation of MgONPs significantly prolonged the release of PTH. Furthermore, both the in-vivo and in-vitro studies demonstrated that high dosage of PTH promoted pro-osteogenicity of the membrane to improve bone regeneration efficacy with the presence of MgONPs. Conclusion The new composite membrane is a promising approach to enhance bone regeneration in periodontitis or peri-implantitis patients with large-volume bone defects.
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Affiliation(s)
- Yiwen Dong
- School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, People’s Republic of China,Department of Oral and Maxillofacial Surgery/Pathology, Amsterdam UMC and Academic Center for Dentistry Amsterdam (ACTA), Vrije Universiteit Amsterdam, Amsterdam Movement Science, Amsterdam, Amsterdam, the Netherlands,Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam (UvA) and Vrije Universiteit Amsterdam (VU), Amsterdam, the Netherlands
| | - Litao Yao
- Department of Oral and Maxillofacial Surgery/Pathology, Amsterdam UMC and Academic Center for Dentistry Amsterdam (ACTA), Vrije Universiteit Amsterdam, Amsterdam Movement Science, Amsterdam, Amsterdam, the Netherlands,Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam (UvA) and Vrije Universiteit Amsterdam (VU), Amsterdam, the Netherlands,Department of Dentistry, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, People’s Republic of China,Correspondence: Litao Yao, Department of Dentistry, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, People’s Republic of China, Zhejiang, Email
| | - Lei Cai
- School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, People’s Republic of China
| | - Mi Jin
- School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, People’s Republic of China
| | - Tymour Forouzanfar
- Department of Oral and Maxillofacial Surgery/Pathology, Amsterdam UMC and Academic Center for Dentistry Amsterdam (ACTA), Vrije Universiteit Amsterdam, Amsterdam Movement Science, Amsterdam, Amsterdam, the Netherlands,Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam (UvA) and Vrije Universiteit Amsterdam (VU), Amsterdam, the Netherlands
| | - Lianjun Wu
- School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, People’s Republic of China
| | - Jinsong Liu
- School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, People’s Republic of China,Jinsong Liu, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, 325027, People’s Republic of China, Email
| | - Gang Wu
- Department of Oral and Maxillofacial Surgery/Pathology, Amsterdam UMC and Academic Center for Dentistry Amsterdam (ACTA), Vrije Universiteit Amsterdam, Amsterdam Movement Science, Amsterdam, Amsterdam, the Netherlands,Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam (UvA) and Vrije Universiteit Amsterdam (VU), Amsterdam, the Netherlands
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Qasim SSB, Al-Asfour AA, Abuzayeda M, Mohamed AM, Trajkovski B, Murray CA, Zafiropoulos GG. Differences in Mechanical and Physicochemical Properties of Several PTFE Membranes Used in Guided Bone Regeneration. MATERIALS (BASEL, SWITZERLAND) 2023; 16:904. [PMID: 36769909 PMCID: PMC9917410 DOI: 10.3390/ma16030904] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/09/2023] [Accepted: 01/13/2023] [Indexed: 06/18/2023]
Abstract
Non-resorbable PTFE membranes are frequently used in dental-guided bone regeneration (GBR). However, there is a lack of detailed comparative studies that define variations among commonly used PTFE membranes in daily dental clinical practice. The aim of this study was to examine differences in physicochemical and mechanical properties of several recent commercial PTFE membranes for dental GBR (CytoplastTM TXT-200, permamem®, NeoGen®, Surgitime, OsseoGuard®-TXT, OsseoGuard®-NTXT). Such differences have been rarely recorded so far, which might be a reason for the varied clinical results. For that reason, we analyzed their surface architecture, chemical composition, tensile strength, Young's modulus, wettability, roughness, density, thickness and porosity. SEM revealed different microarchitectures among the non-textured membranes; the textured ones had hexagonal indentations and XPS indicated an identical spectral portfolio in all membranes. NeoGen® was determined to be the strongest and OsseoGuard®-TXT was the most elastic. Wettability and roughness were highest for Surgitime but lowest for OsseoGuard®-NTXT. Furthermore, permamem® was the thinnest and NeoGen® was identified as the thickest investigated GBR membrane. The defect volumes and defect volume ratio (%) varied significantly, indicating that permamem® had the least imperfect structure, followed by NeoGen® and then Cytoplast TM TXT-200. These differences may potentially affect the clinical outcomes of dental GBR procedures.
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Affiliation(s)
- Syed Saad Bin Qasim
- Department of Bioclinical Sciences, Faculty of Dentistry, Kuwait University, Safat 13110, Kuwait
| | - Adel A. Al-Asfour
- Department of Surgical Sciences, Faculty of Dentistry, Kuwait University, Safat 13110, Kuwait
| | - Moosa Abuzayeda
- Department of Prosthodontics, College of Dentistry, MBR University, Dubai P.O. Box 505055, United Arab Emirates
| | - Ahmed M. Mohamed
- Department of Chemistry, Faculty of Science, Kuwait University, Safat 13060, Kuwait
| | | | - Colin Alexander Murray
- Department of Preventive and Restorative Dentistry, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates
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Chelation in Antibacterial Drugs: From Nitroxoline to Cefiderocol and Beyond. Antibiotics (Basel) 2022; 11:antibiotics11081105. [PMID: 36009974 PMCID: PMC9405089 DOI: 10.3390/antibiotics11081105] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/10/2022] [Accepted: 08/11/2022] [Indexed: 11/16/2022] Open
Abstract
In the era of escalating antimicrobial resistance, the need for antibacterial drugs with novel or improved modes of action (MOAs) is a health concern of utmost importance. Adding or improving the chelating abilities of existing drugs or finding new, nature-inspired chelating agents seems to be one of the major ways to ensure progress. This review article provides insight into the modes of action of antibacterial agents, class by class, through the perspective of chelation. We covered a wide scope of antibacterials, from a century-old quintessential chelating agent nitroxoline, currently unearthed due to its newly discovered anticancer and antibiofilm activities, over the commonly used antibacterial classes, to new cephalosporin cefiderocol and a potential future class of tetramates. We show the impressive spectrum of roles that chelation plays in antibacterial MOAs. This, by itself, demonstrates the importance of understanding the fundamental chemistry behind such complex processes.
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12
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Salman Y, Semieka M, Karmi M, Al-Lethie ALA. A novel surgical technique for prevention of self-sucking in cattle and buffaloes: tongue piercing. BMC Vet Res 2022; 18:192. [PMID: 35596220 PMCID: PMC9121546 DOI: 10.1186/s12917-022-03283-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 05/03/2022] [Indexed: 11/10/2022] Open
Abstract
Background Self-sucking is an abnormal behavior lead to important economic losses for dairy farms. The objective of this study was to evaluate tongue piercing as a novel technique to prevent self-sucking in cattle and buffaloes. The study was carried out on 26 cows and 4 buffaloes suffered from self-sucking. Tongue piercing was achieved by the application of an implant in the midline of the tongue and anterior to the frenulum linguae. With a follow up period of 6 months. Results This implant produced mechanical disruption of the affected animals ability to curl their tongues, in a U- shape manner, subsequently it was impossible for these animals to cup their tongues and suck its own teats. Slight swelling around the piercing site of the tongue was observed among all animals on the first 3 days after surgery. No other complications have been reported. Conclusion Tongue piercing is an effective, rapid, easy, minimally invasive technique to prevent self-sucking among cattle and buffaloes, moreover, the technique was more widely acceptable by the owners than other traditional and surgical methods.
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Affiliation(s)
- Yasser Salman
- Department of Surgery, Anesthesiology, and Radiology, Faculty of Veterinary Medicine, Aswan University, Aswan, 81528, Egypt
| | - Mohamed Semieka
- Department of Surgery, Anesthesiology, and Radiology, Faculty of Veterinary Medicine, Assiut University, Assiut, 71526, Egypt
| | - Mohamed Karmi
- Department of Food Hygiene, Faculty of Veterinary Medicine, Veterinary Medicine, Aswan University, Aswan, 81528, Egypt
| | - Al-Lethie A Al-Lethie
- Department of Surgery, Anesthesiology, and Radiology, Faculty of Veterinary Medicine, Aswan University, Aswan, 81528, Egypt.
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