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Holguín-Meráz C, Martínez-Martínez RE, Zaragoza-Contreras EA, Domínguez-Pérez RA, Reyes-López SY, Donohue-Cornejo A, Cuevas-González JC, Silva-Benítez EDL, Molina-Frechero N, Espinosa-Cristóbal LF. Antibacterial Effect of Silver Nanoparticles against Oral Biofilms in Subjects with Motor and Intellectual Disabilities. J Funct Biomater 2024; 15:191. [PMID: 39057312 PMCID: PMC11277624 DOI: 10.3390/jfb15070191] [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: 06/07/2024] [Revised: 06/27/2024] [Accepted: 07/04/2024] [Indexed: 07/28/2024] Open
Abstract
BACKGROUND Motor and intellectual disabilities (MIDs) represent a great challenge for maintaining general health due to physical and cognitive limitations, particularly in the maintenance and preservation of oral health. Silver nanoparticles (AgNPs) have emerged as a promising therapeutic tool for bacterial control, including oral biofilms; however, knowledge of the bactericidal effectiveness of oral biofilms from patients with MIDs is insufficient. This study aims to determine the antimicrobial effect of AgNPs on different oral biofilms taken from patients with and without MIDs. METHODS Two sizes of AgNPs were prepared and characterized by dynamic light scattering (DLS) and transmission electron microscopy (TEM). Through consecutive sampling, biofilm samples were collected from 17 subjects with MIDs and 20 subjects without disorders. The antimicrobial effect was determined by obtaining the minimum inhibitory concentration (MIC) of AgNPs, and the identification and distribution of oral bacterial species were determined by polymerase chain reaction (PCR). Finally, correlations between sociodemographic characteristics and the antimicrobial levels of AgNPs were also explored. The values of the MIC results were analyzed with IBM-SPSS software (version25) using non-parametric tests for independent groups and correlations, with statistical significance being considered as p < 0.05. RESULTS Both sizes of AgNPs exhibited tight particle size distributions (smaller: 10.2 ± 0.7 nm; larger: 29.3 ± 2.3 nm) with zeta potential values (-35.0 ± 3.3 and -52.6 ± 8.5 mV, respectively) confirming the stability that resulted in little to no agglomeration of nanoparticles. Although both sizes of AgNPs had good antimicrobial activity in all oral biofilms, the smallest particles had the best antimicrobial effects on the oral biofilm samples from patients with and without MIDs, even better than chlorhexidine (CHX) (p < 0.05). Likewise, the patients with disabilities showed higher levels of antimicrobial sensitivity to AgNPs compared with CHX (p < 0.05). Although the microorganisms included in the biofilms of females had a statistically higher growth level, the AgNP antimicrobial effect was statistically similar in both genders (p > 0.05). The most frequent bacteria for all oral biofilms were S. mutans (100%), P. intermedia (91.6%), T. forsythia (75.0%), T. denticola (75.0%), P. gingivalis (66.6%), F. nucleatum (66.6%), S. sobrinus (50.0%), and A. actinomycetemcomitans (8.3%). CONCLUSIONS AgNPs exhibited considerable antimicrobial potential to be used as a complementary and alternative tool in maintaining and preserving oral health in patients with MIDs.
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Affiliation(s)
- Carolina Holguín-Meráz
- Master Program in Dental Sciences, Stomatology Department, Institute of Biomedical Sciences, Autonomous University of Juarez City (UACJ), Envolvente del PRONAF and Estocolmo s/n, Ciudad Juárez 32310, Chihuahua, Mexico; (C.H.-M.); (A.D.-C.); (J.C.C.-G.)
| | - Rita Elizabeth Martínez-Martínez
- Master Program in Advanced Dentistry, Faculty of Dentistry, Autonomous University of San Luis Potosi, Manuel Nava Avenue, University Campus, San Luis Potosí 78290, San Luis Potosí, Mexico;
| | - Erasto Armando Zaragoza-Contreras
- Department of Engineering and Materials Chemistry, Centro de Investigación en Materiales Avanzados, S. C., Miguel de Cervantes No. 120, Chihuahua 31136, Chihuahua, Mexico;
| | - Rubén Abraham Domínguez-Pérez
- Laboratory of Multidisciplinary Dental Research, Faculty of Medicine, Autonomous University of Queretaro, Clavel Street, Prados de La Capilla, Santiago de Querétaro 76176, Querétaro, Mexico;
| | - Simón Yobanny Reyes-López
- Institute of Biomedical Sciences, Autonomous University of Juarez City (UACJ), Envolvente del PRONAF and Estocolmo s/n, Ciudad Juárez 32310, Chihuahua, Mexico;
| | - Alejandro Donohue-Cornejo
- Master Program in Dental Sciences, Stomatology Department, Institute of Biomedical Sciences, Autonomous University of Juarez City (UACJ), Envolvente del PRONAF and Estocolmo s/n, Ciudad Juárez 32310, Chihuahua, Mexico; (C.H.-M.); (A.D.-C.); (J.C.C.-G.)
| | - Juan Carlos Cuevas-González
- Master Program in Dental Sciences, Stomatology Department, Institute of Biomedical Sciences, Autonomous University of Juarez City (UACJ), Envolvente del PRONAF and Estocolmo s/n, Ciudad Juárez 32310, Chihuahua, Mexico; (C.H.-M.); (A.D.-C.); (J.C.C.-G.)
| | - Erika de Lourdes Silva-Benítez
- Faculty of Odontology, Autonomous University of Sinaloa, Josefa Ortiz de Domínguez Street, Culiacán 80010, Sinaloa, Mexico;
| | - Nelly Molina-Frechero
- Division of Biological and Health Sciences, Autonomous Metropolitan University Xochimilco (UAM), Mexico City 04960, Mexico;
| | - León Francisco Espinosa-Cristóbal
- Master Program in Dental Sciences, Stomatology Department, Institute of Biomedical Sciences, Autonomous University of Juarez City (UACJ), Envolvente del PRONAF and Estocolmo s/n, Ciudad Juárez 32310, Chihuahua, Mexico; (C.H.-M.); (A.D.-C.); (J.C.C.-G.)
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Zhao J, Kuang L, Hu A, Zhang Q, Yang D, Wang C. OGNNMDA: a computational model for microbe-drug association prediction based on ordered message-passing graph neural networks. Front Genet 2024; 15:1370013. [PMID: 38689654 PMCID: PMC11058190 DOI: 10.3389/fgene.2024.1370013] [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: 01/13/2024] [Accepted: 03/14/2024] [Indexed: 05/02/2024] Open
Abstract
In recent years, many excellent computational models have emerged in microbe-drug association prediction, but their performance still has room for improvement. This paper proposed the OGNNMDA framework, which applied an ordered message-passing mechanism to distinguish the different neighbor information in each message propagation layer, and it achieved a better embedding ability through deeper network layers. Firstly, the method calculates four similarity matrices based on microbe functional similarity, drug chemical structure similarity, and their respective Gaussian interaction profile kernel similarity. After integrating these similarity matrices, it concatenates the integrated similarity matrix with the known association matrix to obtain the microbe-drug heterogeneous matrix. Secondly, it uses a multi-layer ordered message-passing graph neural network encoder to encode the heterogeneous network and the known association information adjacency matrix, thereby obtaining the final embedding features of the microbe-drugs. Finally, it inputs the embedding features into the bilinear decoder to get the final prediction results. The OGNNMDA method performed comparative experiments, ablation experiments, and case studies on the aBiofilm, MDAD and DrugVirus datasets using 5-fold cross-validation. The experimental results showed that OGNNMDA showed the strongest prediction performance on aBiofilm and MDAD and obtained sub-optimal results on DrugVirus. In addition, the case studies on well-known drugs and microbes also support the effectiveness of the OGNNMDA method. Source codes and data are available at: https://github.com/yyzg/OGNNMDA.
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Affiliation(s)
- Jiabao Zhao
- School of Computer Science and School of Cyberspace Science, Xiangtan University, Xiangtan, China
| | - Linai Kuang
- School of Computer Science and School of Cyberspace Science, Xiangtan University, Xiangtan, China
| | - An Hu
- School of Computer Science and School of Cyberspace Science, Xiangtan University, Xiangtan, China
| | - Qi Zhang
- School of Computer Science and School of Cyberspace Science, Xiangtan University, Xiangtan, China
| | - Dinghai Yang
- School of Computer Science and School of Cyberspace Science, Xiangtan University, Xiangtan, China
| | - Chunxiang Wang
- Hunan Institute of Engineering College of textile and clothing, Xiangtan, China
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Mensah A, Rodgers AM, Larrañeta E, McMullan L, Tambuwala M, Callan JF, Courtenay AJ. Treatment of Periodontal Infections, the Possible Role of Hydrogels as Antibiotic Drug-Delivery Systems. Antibiotics (Basel) 2023; 12:1073. [PMID: 37370392 DOI: 10.3390/antibiotics12061073] [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: 05/02/2023] [Revised: 06/08/2023] [Accepted: 06/14/2023] [Indexed: 06/29/2023] Open
Abstract
With the advancement of biomedical research into antimicrobial treatments for various diseases, the source and delivery of antibiotics have attracted attention. In periodontal diseases, antibiotics are integral in positive treatment outcomes; however, the use of antibiotics is with caution as the potential for the emergence of resistant strains is of concern. Over the years, conventional routes of drug administration have been proven to be effective for the treatment of PD, yet the problem of antibiotic resistance to conventional therapies continues to remain a setback in future treatments. Hydrogels fabricated from natural and synthetic polymers have been extensively applied in biomedical sciences for the delivery of potent biological compounds. These polymeric materials either have intrinsic antibacterial properties or serve as good carriers for the delivery of antibacterial agents. The biocompatibility, low toxicity and biodegradability of some hydrogels have favoured their consideration as prospective carriers for antibacterial drug delivery in PD. This article reviews PD and its antibiotic treatment options, the role of bacteria in PD and the potential of hydrogels as antibacterial agents and for antibiotic drug delivery in PD. Finally, potential challenges and future directions of hydrogels for use in PD treatment and diagnosis are also highlighted.
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Affiliation(s)
- Adelaide Mensah
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine BT52 1SA, UK
| | - Aoife M Rodgers
- The Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, 96 Lisburn Road, Belfast BT9 7BL, UK
| | - Eneko Larrañeta
- School of Pharmacy, Queen's University Belfast, 96 Lisburn Road, Belfast BT9 7BL, UK
| | - Lyndsey McMullan
- DJ Maguire and Associates, Floor 1, Molesworth Place, Molesworth Street, Cookstown BT80 8NX, UK
| | - Murtaza Tambuwala
- Lincoln Medical School, Universities of Nottingham and Lincoln, Brayford Pool Campus, Lincoln LN6 7TS, UK
| | - John F Callan
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine BT52 1SA, UK
| | - Aaron J Courtenay
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine BT52 1SA, UK
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Hernández-Venegas PA, Martínez-Martínez RE, Zaragoza-Contreras EA, Domínguez-Pérez RA, Reyes-López SY, Donohue-Cornejo A, Cuevas-González JC, Molina-Frechero N, Espinosa-Cristóbal LF. Bactericidal Activity of Silver Nanoparticles on Oral Biofilms Related to Patients with and without Periodontal Disease. J Funct Biomater 2023; 14:311. [PMID: 37367275 DOI: 10.3390/jfb14060311] [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: 05/05/2023] [Revised: 05/24/2023] [Accepted: 05/30/2023] [Indexed: 06/28/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Periodontal disease (PD) is a multifactorial oral disease regularly caused by bacterial biofilms. Silver nanoparticles (AgNP) have offered good antimicrobial activity; moreover, there is no available scientific information related to their antimicrobial effects in biofilms from patients with PD. This study reports the bactericidal activity of AgNP against oral biofilms related to PD. MATERIALS AND METHODS AgNP of two average particle sizes were prepared and characterized. Sixty biofilms were collected from patients with (30 subjects) and without PD (30 subjects). Minimal inhibitory concentrations of AgNP were calculated and the distribution of bacterial species was defined by polymerase chain reaction. RESULTS Well-dispersed sizes of AgNP were obtained (5.4 ± 1.3 and 17.5 ± 3.4 nm) with an adequate electrical stability (-38.2 ± 5.8 and -32.6 ± 5.4 mV, respectively). AgNP showed antimicrobial activities for all oral samples; however, the smaller AgNP had significantly the most increased bactericidal effects (71.7 ± 39.1 µg/mL). The most resistant bacteria were found in biofilms from PD subjects (p < 0.05). P. gingivalis, T. denticola, and T. forsythia were present in all PD biofilms (100%). CONCLUSIONS The AgNP showed efficient bactericidal properties as an alternative therapy for the control or progression of PD.
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Affiliation(s)
- Perla Alejandra Hernández-Venegas
- Chemical Biological Department, Institute of Biomedical Sciences, Autonomous University of Juarez City (UACJ), Envolvente del PRONAF and Estocolmo s/n, Ciudad Juárez 32310, Chihuahua, Mexico
| | - Rita Elizabeth Martínez-Martínez
- Master Program in Advanced Dentistry, Faculty of Dentistry, Autonomous University of San Luis Potosi, Manuel Nava Avenue, Universitary Campus, San Luis Potosí 78290, San Luis Potosi, Mexico
| | - Erasto Armando Zaragoza-Contreras
- Department of Engineering and Materials Chemistry, Centro de Investigación en Materiales Avanzados, S. C., Miguel de Cervantes No. 120, Chihuahua 31109, Chihuahua, Mexico
| | - Rubén Abraham Domínguez-Pérez
- Laboratory of Multidisciplinary Dental Research, Faculty of Medicine, Autonomous University of Queretaro, Clavel Street, Prados de La Capilla, Santiago de Querétaro 76176, Queretaro, Mexico
| | - Simón Yobanny Reyes-López
- Institute of Biomedical Sciences, Autonomous University of Juarez City (UACJ), Envolvente del PRONAF and Estocolmo s/n, Ciudad Juárez 32310, Chihuahua, Mexico
| | - Alejandro Donohue-Cornejo
- Master Program in Dental Sciences, Stomatology Department, Institute of Biomedical Sciences, Autonomous University of Juarez City (UACJ), Envolvente del PRONAF and Estocolmo s/n, Ciudad Juárez 32310, Chihuahua, Mexico
| | - Juan Carlos Cuevas-González
- Master Program in Dental Sciences, Stomatology Department, Institute of Biomedical Sciences, Autonomous University of Juarez City (UACJ), Envolvente del PRONAF and Estocolmo s/n, Ciudad Juárez 32310, Chihuahua, Mexico
| | - Nelly Molina-Frechero
- Division of Biological and Health Sciences, Autonomous Metropolitan University Xochimilco (UAM), Mexico City 04960, Mexico
| | - León Francisco Espinosa-Cristóbal
- Master Program in Dental Sciences, Stomatology Department, Institute of Biomedical Sciences, Autonomous University of Juarez City (UACJ), Envolvente del PRONAF and Estocolmo s/n, Ciudad Juárez 32310, Chihuahua, Mexico
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GACNNMDA: a computational model for predicting potential human microbe-drug associations based on graph attention network and CNN-based classifier. BMC Bioinformatics 2023; 24:35. [PMID: 36732704 PMCID: PMC9893988 DOI: 10.1186/s12859-023-05158-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 01/24/2023] [Indexed: 02/04/2023] Open
Abstract
As new drug targets, human microbes are proven to be closely related to human health. Effective computational methods for inferring potential microbe-drug associations can provide a useful complement to conventional experimental methods and will facilitate drug research and development. However, it is still a challenging work to predict potential interactions for new microbes or new drugs, since the number of known microbe-drug associations is very limited at present. In this manuscript, we first constructed two heterogeneous microbe-drug networks based on multiple measures of similarity of microbes and drugs, and known microbe-drug associations or known microbe-disease-drug associations, respectively. And then, we established two feature matrices for microbes and drugs through concatenating various attributes of microbes and drugs. Thereafter, after taking these two feature matrices and two heterogeneous microbe-drug networks as inputs of a two-layer graph attention network, we obtained low dimensional feature representations for microbes and drugs separately. Finally, through integrating low dimensional feature representations with two feature matrices to form the inputs of a convolutional neural network respectively, a novel computational model named GACNNMDA was designed to predict possible scores of microbe-drug pairs. Experimental results show that the predictive performance of GACNNMDA is superior to existing advanced methods. Furthermore, case studies on well-known microbes and drugs demonstrate the effectiveness of GACNNMDA as well. Source codes and supplementary materials are available at: https://github.com/tyqGitHub/TYQ/tree/master/GACNNMDA.
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Okahashi N, Nakata M, Kuwata H, Kawabata S. Oral mitis group streptococci: A silent majority in our oral cavity. Microbiol Immunol 2022; 66:539-551. [PMID: 36114681 DOI: 10.1111/1348-0421.13028] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 09/11/2022] [Accepted: 09/12/2022] [Indexed: 12/13/2022]
Abstract
Members of the oral mitis group streptococci including Streptococcus oralis, Streptococcus sanguinis, and Streptococcus gordonii are the most abundant inhabitants of human oral cavity and dental plaque, and have been implicated in infectious complications such as bacteremia and infective endocarditis. Oral mitis group streptococci are genetically close to Streptococcus pneumoniae; however, they do not produce cytolysin (pneumolysin), which is a key virulence factor of S. pneumoniae. Similar to S. pneumoniae, oral mitis group streptococci possess several cell surface proteins that bind to the cell surface components of host mammalian cells. S. sanguinis expresses long filamentous pili that bind to the matrix proteins of host cells. The cell wall-anchored nuclease of S. sanguinis contributes to the evasion of the neutrophil extracellular trap by digesting its web-like extracellular DNA. Oral mitis group streptococci produce glucosyltransferases, which synthesize glucan (glucose polymer) from sucrose of dietary origin. Neuraminidase (NA) is a virulent factor in oral mitis group streptococci. Influenza type A virus (IAV) relies on viral NA activity to release progeny viruses from infected cells and spread the infection, and NA-producing oral streptococci elevate the risk of IAV infection. Moreover, oral mitis group streptococci produce hydrogen peroxide (H2 O2 ) as a by-product of sugar metabolism. Although the concentrations of streptococcal H2 O2 are low (1-2 mM), they play important roles in bacterial competition in the oral cavity and evasion of phagocytosis by host macrophages and neutrophils. In this review, we intended to describe the diverse pathogenicity of oral mitis group streptococci.
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Affiliation(s)
- Nobuo Okahashi
- Department of Oral and Molecular Microbiology, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan.,Center for Frontier Oral Science, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| | - Masanobu Nakata
- Department of Oral Microbiology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Hirotaka Kuwata
- Department of Oral Microbiology and Immunology, School of Dentistry, Showa University, Shinagawa, Tokyo, Japan
| | - Shigetada Kawabata
- Department of Oral and Molecular Microbiology, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
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Li X, Wang Y, Jiang X, Zeng Y, Zhao X, Washio J, Takahashi N, Zhang L. Investigation of drug resistance of caries-related streptococci to antimicrobial peptide GH12. Front Cell Infect Microbiol 2022; 12:991938. [PMID: 36159653 PMCID: PMC9492880 DOI: 10.3389/fcimb.2022.991938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 08/22/2022] [Indexed: 11/13/2022] Open
Abstract
Dental caries is associated with caries-related streptococci and antimicrobial agents have been widely used for caries control, but troubled by antibiotic resistance. This study aimed to investigate the intrinsic and acquired resistance of caries-related streptococci to antimicrobial peptide GH12, which was proven promising for caries control, and preliminarily explore the phenotypic changes and whole genome of stable acquired resistant strains. In this study, susceptibility assays and resistance assays were performed, followed by stability assays of resistance, to evaluate the intrinsic resistance and the potential resistance of caries-related streptococci. Then, the phenotypic changes of the stable acquired resistant strain were explored. The whole genome of the resistant strain was sequenced and analyzed by second-generation and third-generation high-throughput sequencing technologies. Streptococcus gordonii and Streptococcus sanguinis were intrinsically resistant to GH12 compared to cariogenic Streptococcus mutans. Acquired GH12 resistance in one S. sanguinis and four S. mutans clinical strains was transient but stable in one S. mutans strain (COCC33-14). However, acquired resistance to daptomycin (DAP) and chlorhexidine in all strains was stable. Furthermore, the COCC33-14 showed cross-resistance to DAP and delayed growth rates and a lower population. However, no drug-resistant gene mutation was detected in this strain, but 6 new and 5 missing genes were found. Among them, annotation of one new gene (gene 1782|COCC33-14R) is related to the integral component of the membrane, and one missing gene rpsN is associated with the metabolism and growth of bacteria. The results indicate that stable resistant mutants of caries-related streptococci could hardly be selected by exposure to consecutive sublethal GH12, but the risk still existed. Resistance in COCC33-14R is mainly related to changes in the cell envelope.
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Affiliation(s)
- Xinwei Li
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Stomatology, Chengdu Second People’s Hospital, Chengdu, China
| | - Yufei Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xuelian Jiang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yuhao Zeng
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xinran Zhao
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jumpei Washio
- Division of Oral Ecology and Biochemistry, Graduate School of Dentistry, Tohoku University, Sendai, Japan
| | - Nobuhiro Takahashi
- Division of Oral Ecology and Biochemistry, Graduate School of Dentistry, Tohoku University, Sendai, Japan
| | - Linglin Zhang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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Procópio SW, Ribeiro ADA, Miyahira KM, Sarmento EB, Portela MB, de GFB, Castro A. Is the Oral Cavity of Intensive Care Unit Pediatric Patients More Susceptible to Methicillin-Resistant Staphylococcus aureus Infection? Microb Drug Resist 2022; 28:787-794. [PMID: 35759386 DOI: 10.1089/mdr.2021.0388] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Objective: The aim of this study was to assess the prevalence of methicillin-resistant Staphylococcus aureus (MRSA) in the oral cavity of pediatric patients hospitalized at an intensive care unit (ICU). Methodology: Thirty ICU patients (group 1) and 30 healthy patients (group 2), between 1 and 12 years of age, matched by sex and age, were selected from a public hospital in Brazil. After oral examinations, biological specimens (nostril swab, oral mucosa, and supragingival biofilm) were collected from both groups to verify the presence of Staphylococcus aureus. Identification occurred after growth in Tryptic Soy Broth with 7.5% of NaCl for 48 hours, growth in Mannitol Salt Agar, gram staining, catalase, and coagulase tests. S. aureus isolates were submitted to antibiotic sensitivity test. Results: Only 36.7% of patients in the ICU perform oral hygiene during the hospitalization period and 41.7% presented high level of dental biofilm accumulation. The presence of S. aureus was similar in patients from group 1 (43.3%, 13) and group 2 (50.0%, 15) (p = 0.60). Both groups presented 18 samples each that tested positive for S. aureus. However, when considering patients infected by MRSA, the prevalence was higher in group 1 (eight; 26.7%) than in group 2 (five; 16.7%) but no statistical difference was observed (p = 0.53). In group 1, nine MRSA samples were resistant to erythromycin and seven to clindamycin. In group 2, two MRSA samples were resistant to erythromycin and two to clindamycin. Conclusions: Although ICU children did not show a significant higher carriage of MRSA when compared with the healthy group in the population studied, the number of highly resistant strains in the oral cavity isolated from ICU patients adds an important risk factor to be considered by the medical team as possible source of systemic infections, extended hospital stay, and poor outcomes.
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Affiliation(s)
- Stefânia Werneck Procópio
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Rio de Janeiro Federal University, Rio de Janeiro, Brazil
| | - Apoena de Aguiar Ribeiro
- Division of Diagnostic Sciences, Adams School of Dentistry, University of North Carolina at Chapel Hill, North Carolina, USA
| | - Karla Magnan Miyahira
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Rio de Janeiro Federal University, Rio de Janeiro, Brazil
| | - Estéfano Borgo Sarmento
- Department of Specific Formation, School of Dentistry, Fluminense Federal University, Nova Friburgo, Brazil
| | - Maristela Barbosa Portela
- Department of Clinical Dentistry, School of Dentistry, Fluminense Federal University, Niterói, Brazil
| | | | - Araújo Castro
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Rio de Janeiro Federal University, Rio de Janeiro, Brazil
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Distribution and Antibiotic Resistance of Streptococci and Enterococci Isolated from Dental Caries and Healthy People. JOURNAL OF MEDICAL MICROBIOLOGY AND INFECTIOUS DISEASES 2022. [DOI: 10.52547/jommid.10.2.48] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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10
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No-ozone cold plasma can kill oral pathogenic microbes in H 2O 2-dependent and independent manner. Sci Rep 2022; 12:7597. [PMID: 35534525 PMCID: PMC9085805 DOI: 10.1038/s41598-022-11665-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 04/25/2022] [Indexed: 01/05/2023] Open
Abstract
To apply the sterilisation effect of low-temperature plasma to the oral cavity, the issue of ozone from plasma must be addressed. In this study, a new technology for generating cold plasma with almost no ozone is developed and is named Nozone (no-ozone) Cold Plasma (NCP) technology. The antimicrobial efficacy of the NCP against four oral pathogens is tested, and its specific mechanism is elucidated. The treatment of NCP on oral pathogenic microbes on a solid medium generated a growth inhibition zone. When NCP is applied to oral pathogens in a liquid medium, the growth of microbes decreased by more than 105 colony forming units, and the bactericidal effect of NCP remained after the installation of dental tips. The bactericidal effect of NCP in the liquid medium is due to the increase in hydrogen peroxide levels in the medium. However, the bactericidal effect of NCP in the solid medium depends on the charged elements of the NCP. Furthermore, the surface bactericidal efficiency of the dental-tip-installed NCP is proportional to the pore size of the tips and inversely proportional to the length of the tips. Overall, we expect this NCP device to be widely used in dentistry in the near future.
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Shadrina AAN, Herdiyati Y, Wiani I, Satari MH, Kurnia D. Prediction Mechanism of Nevadensin as Antibacterial Agent against S. sanguinis: In vitro and In silico Studies. Comb Chem High Throughput Screen 2021; 25:1488-1497. [PMID: 34238151 DOI: 10.2174/1386207324666210707104440] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 05/16/2021] [Accepted: 05/21/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Streptococcus sanguinis can contribute to tooth demineralization, which can lead to dental caries. Antibiotics used indefinitely to treat dental caries can lead to bacterial resistance. Discovering new antibacterial agents from natural products like Ocimum basilicum will help combat antibiotic resistance. In silico analysis (molecular docking) can help determine the lead compound by studying the molecular interaction between the drug and the target receptor (MurA enzyme and DNA gyrase). It is a potential candidate for antibacterial drug development. OBJECTIVE The research objective is to isolate the secondary metabolite of O. basilicum extract that has activity against S. sanguinis through in vitro and in silico analysis. METHODS n-Hexane extract of O. basilicum was purified by combining column chromatography with bioactivity-guided. The in vitro antibacterial activity against S. sanguinis was determined using the disc diffusion and microdilution method, while molecular docking simulation of nevadensin (1) with MurA enzyme and DNA gyrase was performed used PyRx 0.8 program. RESULTS Nevadensin from O. basilicum was successfully isolated and characterized by spectroscopic methods. This compound showed antibacterial activity against S. sanguinis with MIC and MBC values of 3750 and 15000 μg/mL, respectively. In silico analysis showed that the binding affinity to MurA was -8.5 Kcal/mol, and the binding affinity to DNA gyrase was -6.7 Kcal/mol. The binding of nevadensin-MurA is greater than fosfomycin-MurA. Otherwise, Nevadensin-DNA gyrase has a weaker binding affinity than fluoroquinolone-DNA gyrase and chlorhexidine-DNA gyrase. CONCLUSION Nevadensin showed potential as a new natural antibacterial agent by inhibiting the MurA enzyme rather than DNA gyrase.
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Affiliation(s)
- Aldina Amalia Nur Shadrina
- Department of Chemistry, Faculty of Mathematics and Natural Science, Universitas Padjadjaran, Sumedang. Indonesia
| | - Yetty Herdiyati
- Department of Pediatric Dentistry, Faculty of Dentistry, Universitas Padjadjaran , Bandung. Indonesia
| | - Ika Wiani
- Department of Chemistry, Faculty of Mathematics and Natural Science, Universitas Padjadjaran, Sumedang. Indonesia
| | - Mieke Hemiawati Satari
- Department of Oral Biology, Faculty of Dentistry, Universitas Padjadjaran, Bandung. Indonesia
| | - Dikdik Kurnia
- Department of Chemistry, Faculty of Mathematics and Natural Science, Universitas Padjadjaran, Sumedang. Indonesia
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Enan ET, Ashour AA, Basha S, Felemban NH, Gad El-Rab SMF. Antimicrobial activity of biosynthesized silver nanoparticles, amoxicillin, and glass-ionomer cement against Streptococcus mutansand Staphylococcus aureus. NANOTECHNOLOGY 2021; 32:215101. [PMID: 33657016 DOI: 10.1088/1361-6528/abe577] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Accepted: 02/11/2021] [Indexed: 06/12/2023]
Abstract
Background. The development of dental caries is associated with various microorganisms and secondary caries formation is the main cause of restorations failure. The advice for restorative dental materials that have antimicrobial properties has stimulated the introduction of materials containing different antibacterial agents.Objectives. The present study has been designed to synthesize silver nanoparticles (AgNPs) and incorporate AgNPs and amoxicillin into glass ionomer cement (GIC) to synergize its effect on oral microbes. The effect of the added antimicrobial agents on compressive strength (CS) of GIC was also evaluated.Material and methods. Biosynthesis of AgNPs was done usingCupressus macrocarpaextract and AgNPs were characterized. A total of 120 disc-shaped specimens were prepared and classified into 4 main groups where Group A includes conventional GIC, Groups B and C include GIC with AgNPs or amoxicillin, respectively, while Group D included GIC with both AgNPs and amoxicillin. Each group was tested for the antimicrobial activity against bothStreptococcus mutans(S. mutans) andStaphylococcus aureus(S. aureus). The distribution of biofilm was examined via a scanning electron microscope. The CS of the tested material was measured using a Material Test System.Results. The UV-visible spectrum showed a peak of 429 nm. Transmission electron microscopy, x-ray diffraction pattern and Fourier transform infrared analysis confirmed the formation of AgNPs with spherical to oblong polydispersed particles of diameter in the range of 13.5-25.8 nm. The maximum inhibitory zone was recorded for group D against both tested bacteria with a mean of 29 mm at first 24 h period to 15 mm at three weeks and showed antimicrobial rate 92.2% and 92.56%, against both strains, respectively. Additionally, group D disintegrated the structure ofS. aureusbiofilm and even kill bacteria in the biofilms. The addition of AgNPs and amoxicillin caused an insignificant effect on CS of GIC.Conclusion.TheAgNPs showed a synergistic effect in combination with amoxicillin and GIC dental restorative material against studied microorganisms. The agents can be safely added with minimal effect on the mechanical properties of the original cement.
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Affiliation(s)
- Enas Tawfik Enan
- Dental Biomaterials, Faculty of Dentistry, Taif University, Saudi Arabia
- Dental Biomaterials, Faculty of Dentistry, Mansoura University, Egypt
| | - Amal A Ashour
- Department of Oral and Maxillofacial Surgery and Diagnostic Sciences, Oral Pathology Division, Faculty of Dentistry, Taif University, Saudi Arabia
| | - Sakeenabi Basha
- Department of Preventive and Community Dentistry, Faculty of Dentistry, Taif University, Taif, Saudi Arabia
| | - Nayef H Felemban
- Preventive Dentistry Department, Faculty of Dentistry, Taif University, Saudi Arabia
| | - Sanaa M F Gad El-Rab
- Department of Biotechnology, Faculty of Science, Taif University, PO Box 888, Taif, 21974, Saudi Arabia
- Department of Botany and Microbiology, Faculty of Science, Assiut University, 71516 Assiut, Egypt
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Mahamuni-Badiger PP, Patil PM, Badiger MV, Patel PR, Thorat- Gadgil BS, Pandit A, Bohara RA. Biofilm formation to inhibition: Role of zinc oxide-based nanoparticles. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 108:110319. [DOI: 10.1016/j.msec.2019.110319] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 09/19/2019] [Accepted: 10/14/2019] [Indexed: 12/28/2022]
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Loyola-Rodríguez JP, Torres-Méndez F, Espinosa-Cristobal LF, García-Cortes JO, Loyola-Leyva A, González FJ, Soto-Barreras U, Nieto-Aguilar R, Contreras-Palma G. Antimicrobial activity of endodontic sealers and medications containing chitosan and silver nanoparticles against Enterococcus faecalis. J Appl Biomater Funct Mater 2020; 17:2280800019851771. [PMID: 31373255 DOI: 10.1177/2280800019851771] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND The main microorganism associated with the failure of endodontic treatments is Enterococcus faecalis. Although several endodontic therapeutics have demonstrated antimicrobial activity against E. faecalis, the antimicrobial effectiveness of chitosan (CsNPs) and silver nanoparticles (AgNPs) included into conventional endodontic sealers for endodontic therapies is still unclear. AIM The objective of this study was to evaluate the antibacterial activity increment (AAI) of endodontic sealers containing CsNPs and AgNPs as well as some chemical components against E. faecalis by direct contact assays. METHODS CsNPs and AgNPs were synthesized by reduction and ionic gelation methods, respectively. Nanoparticles were characterized by dynamic light scattering and energy dispersive X-ray analysis. The bactericidal activity was tested on monolayers on agar plates and collagen membrane surface assays against E. faecalis. RESULTS The size of CsNPs was 70.6±14.8 nm and zeta potential was 52.0±5.4 mV; the size of AgNPs was 54.2±8.5 nm, and zeta potential was -48.4±6.9 mV. All materials, single or combined, showed an AAI, especially when CsNPs, chlorhexidine (Chx), and the combination of CsNPs-Chx were added. However, the combination of CsNPs-Chx showed the highest (55%) AAI, followed by Chx (35.5%) and CsNPs (11.1%), respectively. There was a significant statistical difference in all comparisons (p < 0.05). Tubliseal (40%) and AH Plus (32%) sealants showed a higher AAI on E. faecalis in the monolayer test and collagen membrane assay analyzed by scanning electron microscopy. CONCLUSIONS Tubliseal and AH plus sealers combined with nanoparticles, especially CsNPs-Chx, could be used for conventional endodontic treatments in the control of E. faecalis bacteria.
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Affiliation(s)
- Juan Pablo Loyola-Rodríguez
- 1 Laboratorio de Bionanomateriales, Facultad de Medicina, Universidad Autónoma de Guerrero, Acapulco, México
| | | | | | | | | | | | - Uriel Soto-Barreras
- 4 Facultad de Odontología, Universidad Autónoma de Chihuahua, Chihuahua, México
| | | | - Guillermo Contreras-Palma
- 1 Laboratorio de Bionanomateriales, Facultad de Medicina, Universidad Autónoma de Guerrero, Acapulco, México
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Ogawa K, Kaneko K, Yokoo T. Denture Use Warning for Peritoneal Dialysis‐Related Peritonitis. Ther Apher Dial 2020; 24:96-97. [DOI: 10.1111/1744-9987.12860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Revised: 04/24/2019] [Accepted: 05/23/2019] [Indexed: 11/30/2022]
Affiliation(s)
- Kyohei Ogawa
- Division of Nephrology, Department of Internal MedicineAshikaga Red Cross Hospital Tochigi Japan
| | - Kenji Kaneko
- Division of Nephrology, Department of Internal MedicineAshikaga Red Cross Hospital Tochigi Japan
| | - Takashi Yokoo
- Division of Nephrology and Hypertension, Department of Internal MedicineThe Jikei University School of Medicine Tokyo Japan
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Fusconi M, Greco A, Galli M, Polimeni A, Yusef M, Di Cianni S, De Soccio G, Federici Stanganelli FR, Lombardi R, de Vincentiis M. Odontogenic phlegmons and abscesses in relation to the financial situation of Italian families. ACTA ACUST UNITED AC 2019; 68:236-241. [PMID: 31822047 DOI: 10.23736/s0026-4970.19.04276-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND In recent years, we have recorded an increase in the number of hospital admissions due to odontogenic abscesses and neck phlegmons requiring surgery. We believe that the cause may be related both to the rationalization of funding allocation procedures in public health service making access to public dental healthcare more difficult, and the financial situation of Italian families. METHODS Fifty-five patients admitted between January 2013 and November 2017 with a diagnosis of "neck abscess" and/or "neck phlegmon" and/or "neck infection" were enrolled in this longitudinal retrospective study. RESULTS The results of this study showed that the number of cases of abscesses and neck phlegmons with an odontogenic origin have quadrupled, with reference to gender was 31 males (56%) and 24 females (44%). The average age was 46 and most cases involved patients between 30 and 50. Eighteen patients (33%) were not EU citizens and had been living in Italy for over 5 years. These data indicate an increase in the incidence of odontogenic neck infections. The data gathered by ISTAT (Istituto Nazionale di Statistica), Eurostat Data Explorer, Fondazione Giuseppe Di Vittorio and Tecnè revealed that these outcomes are directly related to the financial difficulties Italian families are experiencing. The exclusion of essential dental assistance from public healthcare forced Italians to consult expensive private facilities that not everyone can afford. CONCLUSIONS Connections were found between odontogenic neck infection complications and the financial difficulties Italian families are suffering from; Italians are reducing their budget for dental healthcare becoming exposed to serious neck pathologies.
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Affiliation(s)
- Massimo Fusconi
- Section of Ear Nose and Throat, Department of Sense Organs, Sapienza University, Rome, Italy -
| | - Antonio Greco
- Section of Ear Nose and Throat, Department of Sense Organs, Sapienza University, Rome, Italy
| | - Massimo Galli
- Department of Oral and Maxillofacial Science, Sapienza University, Rome, Italy
| | - Antonella Polimeni
- Department of Oral and Maxillofacial Science, Sapienza University, Rome, Italy
| | - Marco Yusef
- Department of Oral and Maxillofacial Science, Sapienza University, Rome, Italy
| | - Simone Di Cianni
- Section of Ear Nose and Throat, Department of Sense Organs, Sapienza University, Rome, Italy
| | - Giulia De Soccio
- Section of Ear Nose and Throat, Department of Sense Organs, Sapienza University, Rome, Italy
| | | | - Roberto Lombardi
- Department of Oral and Maxillofacial Science, Sapienza University, Rome, Italy
| | - Marco de Vincentiis
- Section of Ear Nose and Throat, Department of Sense Organs, Sapienza University, Rome, Italy
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Loyola-Rodriguez JP, Franco-Miranda A, Loyola-Leyva A, Perez-Elizalde B, Contreras-Palma G, Sanchez-Adame O. Prevention of infective endocarditis and bacterial resistance to antibiotics: A brief review. SPECIAL CARE IN DENTISTRY 2019; 39:603-609. [PMID: 31464005 DOI: 10.1111/scd.12415] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 07/31/2019] [Accepted: 08/03/2019] [Indexed: 12/26/2022]
Abstract
The purpose of this statement is to debate the recommendations of the American Heart Association (AHA) for the prevention of infective endocarditis through an antibiotic prophylaxis protocol and its relation with bacterial resistance to antibiotics. Since dental infections involve biofilms that include several bacterial species (Gram-negative and Gram-positive), it is essential, from the dental point of view, to consider the frequency, magnitude, and duration of bacteremia associated with active dental infections before applying antibiotic prophylaxis. The actual guidelines for antibiotic prophylaxis should be revised according to recent evidence of bacterial resistance. Amoxicillin/clavulanic acid and moxifloxacin should be considered due to their effectiveness against bacteria associated with oral, GU, and GI infections and the low rates of antibiotic resistance associated with these antibiotics, instead of the actual protocol, which includes amoxicillin (2 g) or clindamycin (600 mg) administered an hour before the dental procedures. The breaking point to test the antibiotic bacterial resistance (ABR) had a wide range in the different studies that were analyzed, which could explain the widely varied ABR percentages reported for the various antibiotics used for antibiotic prophylaxis.
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Affiliation(s)
- Juan Pablo Loyola-Rodriguez
- Laboratorio de Biomateriales y Bionanotecnología, Maestría en Ciencias de la Salud, Facultad de Medicina, Universidad Autónoma de Guerrero, Acapulco, México
| | | | - Alejandra Loyola-Leyva
- Doctorado en Ciencias Biomedicas Básicas, Universidad Autónoma de San Luis Potosí, México
| | - Bulfrano Perez-Elizalde
- Medicina Translacional, Maestría en Ciencias de la Salud, Facultad de Medicina, Universidad Autónoma de Guerrero, Acapulco, México
| | - Guillermo Contreras-Palma
- Laboratorio de Biomateriales y Bionanotecnología, Maestría en Ciencias de la Salud, Facultad de Medicina, Universidad Autónoma de Guerrero, Acapulco, México
| | - Oscar Sanchez-Adame
- Medicina Translacional, Maestría en Ciencias de la Salud, Facultad de Medicina, Universidad Autónoma de Guerrero, Acapulco, México
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