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Vishwakarma A, Verma D. 16S rDNA-Based Amplicon Analysis Unveiled a Correlation Between the Bacterial Diversity and Antibiotic Resistance Genes of Bacteriome of Commercial Smokeless Tobacco Products. Appl Biochem Biotechnol 2024:10.1007/s12010-024-04857-y. [PMID: 38407781 DOI: 10.1007/s12010-024-04857-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/04/2024] [Indexed: 02/27/2024]
Abstract
The distribution of bacterial-derived antibiotic resistance genes (ARGs) in smokeless tobacco products is less explored and encourages understanding of the ARG profile of Indian smokeless tobacco products. Therefore, in the present investigation, ten commercial smokeless tobacco products were assessed for their bacterial diversity to understand the correlation between the inhabitant bacteria and predicted ARGs using a 16S rDNA-based metagenome analysis. Overall analysis showed the dominance of two phyla, i.e., Firmicutes (43.07%) and Proteobacteria (8.13%) among the samples, where Bacillus (9.76%), Terribacillus (8.06%), Lysinibacillus (5.8%), Alkalibacterium (5.6%), Oceanobacillus (3.52%), and Dickeya (3.1%) like genera were prevalent among these phyla. The phylogenetic investigation of communities by reconstruction of unobserved states (PICRUSt)-based analysis revealed 217 ARGs which were categorized into nine groups. Cationic antimicrobial polypeptides (CAMP, 33.8%), vancomycin (23.4%), penicillin-binding protein (13.8%), multidrug resistance MDR (10%), and β-lactam (9.3%) were among the top five contributors to ARGs. Staphylococcus, Dickeya, Bacillus, Aerococcus, and Alkalibacterium showed their strong and significant correlation (p value < 0.05) with various antibiotic resistance mechanisms. ARGs of different classes (blaTEM, blaSHV, blaCTX, tetX, vanA, aac3-II, mcr-1, intI-1, and intI2) were also successfully amplified in the metagenomes of SMT samples using their specific primers. The prevalence of ARGs in inhabitant bacteria of smokeless tobacco products suggests making steady policies to regulate the hygiene of commercial smokeless tobacco products.
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Affiliation(s)
- Akanksha Vishwakarma
- Department of Environmental Microbiology, School of Earth and Environmental Sciences, Babasaheb Bhimrao Ambedkar University, Lucknow, India, 226025
| | - Digvijay Verma
- Department of Environmental Microbiology, School of Earth and Environmental Sciences, Babasaheb Bhimrao Ambedkar University, Lucknow, India, 226025.
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2
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Tan JY, Teo GN, Ng E, Tay ABG, Tay JRH. Gingival Necrosis Related to Sepsis-Induced Agranulocytosis Due to Pseudomonas aeruginosa Bacteraemia: A Case Report. J Clin Med 2024; 13:1285. [PMID: 38592105 PMCID: PMC10931707 DOI: 10.3390/jcm13051285] [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: 01/15/2024] [Revised: 02/19/2024] [Accepted: 02/22/2024] [Indexed: 04/10/2024] Open
Abstract
Background: There have been no reports of sepsis-induced agranulocytosis causing gingival necrosis in otherwise medically healthy patients to the authors' best knowledge. Even though there are several case reports of gingival necrosis secondary to medication-induced agranulocytosis, they have not systematically described the natural progression of agranulocytosis-related gingival necrosis. Methods: This paper presents a case report of a 29-year-old female Indian patient with generalised gingival necrosis and constitutive signs of intermittent fever, nausea, and vomiting. She also complained of abdominal pains. Blood counts showed agranulocytosis, and the patient was admitted for a workup of the underlying cause. Parenteral broad-spectrum antibiotics were administered, which brought about clinical resolution. Results: Her gingival necrosis was attributed to sepsis-induced agranulocytosis triggered by Pseudomonas aeruginosa bacteraemia, and upon clinical recovery, spontaneous exfoliation left behind exposed bone. Secondary healing over the exposed alveolar bone was noted after a year-long follow-up, albeit with some residual gingival recession. Conclusions: Oral manifestations of gingival necrosis, when present with concomitant constitutive symptoms, could indicate a serious underlying systemic condition that could be potentially life-threatening if left untreated. Dentists should be cognizant of this possibility so that timely intervention is not delayed.
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Affiliation(s)
| | - Guo Nian Teo
- Department of Oral and Maxillofacial Surgery, National Dental Centre, Singapore 168938, Singapore; (G.N.T.); (A.B.G.T.)
| | - Ethan Ng
- Department of Restorative Dentistry, National Dental Centre, Singapore 168938, Singapore;
| | - Andrew Ban Guan Tay
- Department of Oral and Maxillofacial Surgery, National Dental Centre, Singapore 168938, Singapore; (G.N.T.); (A.B.G.T.)
| | - John Rong Hao Tay
- Department of Restorative Dentistry, National Dental Centre, Singapore 168938, Singapore;
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Xie Y, Li J, Liu C, Zhang X, Zhang X, Wang Q, Zhang L, Yang S. Antimicrobial efficacy of aloe-emodin mediated photodynamic therapy against antibiotic-resistant Pseudomonas aeruginosa in vitro. Biochem Biophys Res Commun 2024; 690:149285. [PMID: 37995454 DOI: 10.1016/j.bbrc.2023.149285] [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: 11/08/2023] [Accepted: 11/16/2023] [Indexed: 11/25/2023]
Abstract
Multidrug-resistant Pseudomonas aeruginosa is a common pathogen that causes topical infections following burn injuries. Antimicrobial photodynamic therapy (aPDT) has emerged as a promising approach for treating antibiotic-resistant bacterial infections. The objective of this study was to evaluate the aPDT efficacy of aloe-emodin (AE), which is a photosensitizer extracted from traditional Chinese herbs, on antibiotic-sensitive and antibiotic-resistant P. aeruginosa in vitro. In this study, we confirmed the effectiveness of AE-mediated aPDT against both standard and MDR P. aeruginosa, explored the effects of irradiation time and AE concentration on bacterial survival in AE-mediated aPDT, and observed the structural damage of P. aeruginosa by using transmission electron microscope. Our results showed that neither AE nor light irradiation alone caused cytotoxic effects on P. aeruginosa. However, AE-mediated aPDT effectively inactivated both antibiotic-sensitive and antibiotic-resistant P. aeruginosa. The transmission electron microscope investigation showed that aPDT mediated by AE primarily caused damage to the cytoplasm and cell membrane. Our findings suggest that AE is a photosensitizer in the aPDT of MDR P. aeruginosa-caused topical infections following burn injuries. Future investigations will concentrate on the safety and efficacy of AE-mediated aPDT in animal models and clinical trials.
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Affiliation(s)
- Yun Xie
- Department of Clinical Laboratory, Northwest Women's and Children's Hospital, Xi'an, China
| | - Jiao Li
- Department of Clinical Laboratory, Northwest Women's and Children's Hospital, Xi'an, China
| | - Chengcheng Liu
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Xiaofei Zhang
- Department of Clinical Laboratory, Northwest Women's and Children's Hospital, Xi'an, China
| | - Xinran Zhang
- Department of Clinical Laboratory, Northwest Women's and Children's Hospital, Xi'an, China
| | - Qi Wang
- Department of Clinical Laboratory, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Lixia Zhang
- Department of Clinical Laboratory, Shaanxi Provincial People's Hospital, Xi'an, China.
| | - Shaoqing Yang
- Department of Oral Biology, School of Stomatology, The Fourth Military Medical University, Xi'an, China.
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Gobbi MF, Ferreira MH, de Carvalho DLC, Silva GBL, Macari KSM, Neves LDJ, Santos PSDS, Junior LAVS, Melo WR, Antunes HS, De Macedo LD, Eduardo FDP, Bezinelli LM. Dental consensus on HSCT - Part II: dental Care during HSCT. Hematol Transfus Cell Ther 2023; 45:368-378. [PMID: 37321878 PMCID: PMC10499574 DOI: 10.1016/j.htct.2023.04.003] [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: 03/24/2023] [Accepted: 04/17/2023] [Indexed: 06/17/2023] Open
Abstract
During the state of immune vulnerability in hematopoietic stem cell transplantation (HSCT), the patient has an increased risk of developing a vast number of complications, including severe problems in the oral cavity. These situations require professional oral care to act in the diagnosis and treatment of these conditions, as well as to develop prevention protocols to minimize patient's complications. Oral mucositis, opportunistic infections, bleeding, specific microbiota, taste, and salivary alterations are complications that can occur during HSCT and interfere with various aspects, such as pain control, oral intake, nutrition, bacteremia and sepsis, days of hospitalization and morbidity. Several guidelines have been published to address the role of professional oral care during the HSCT, we describe a consensus regarding these recommendations.
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Affiliation(s)
| | | | | | - Geisa Badauy Lauria Silva
- Serviço de Odontologia do Hospital Aráujo Jorge/Associação de Combate ao Câncer em Goiás, Goiânia, Goiás, Brazil
| | - Karina Silva Moreira Macari
- Departamento de Odontologia, Hospital de Câncer Infantojuvenil de Barretos do Hospital de Amor, Barretos, SP, Brazil
| | - Lilian de Jesus Neves
- Departamento de Odontologia, Hospital de Câncer Infantojuvenil de Barretos do Hospital de Amor, Barretos, SP, Brazil
| | - Paulo Sérgio da Silva Santos
- Departamento de Cirurgia, Estomatologia, Patologia e Radiologia da Faculdade de Odontologia de Bauru, Universidade de São Paulo, Bauru, Brazil
| | | | | | | | - Leandro Dorigan De Macedo
- Serviço de Odontologia e Estomatologia do Hospital das Clínicas da Faculdade de Medicina de Ribeirão Preto, Brazil; Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo, Brazil
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Bencze B, Temesfői V, Das S, Papp H, Kaltenecker P, Kuczmog A, Jakab F, Kocsis B, Kőszegi T. Development of a novel, entirely herbal-based mouthwash effective against common oral bacteria and SARS-CoV-2. BMC Complement Med Ther 2023; 23:138. [PMID: 37127611 PMCID: PMC10150350 DOI: 10.1186/s12906-023-03956-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 04/11/2023] [Indexed: 05/03/2023] Open
Abstract
BACKGROUND Parallel to the growth of the oral healthcare market, there is a constantly increasing demand for natural products as well. Many customers prefer products that contain fewer toxic agents, therefore providing an environmentally friendly solution with the benefit of smaller risk to the user. Medieval and early modern medicinal knowledge might be useful when looking for natural, herbal-based components to develop modern products. Along with these considerations we created, tested, and compared an entirely natural mouthwash, named Herba Dei. METHODS The manufacturing procedure was standardized, and the created tincture was evaluated by GC/MS analysis for active compounds, experimentally tested in cell-based cytotoxicity, salivary protein integrity, cell-free antioxidant activity, anti-bacterial and anti-viral assays, and compared with three market-leading mouthwashes. RESULTS Our tincture did not show significant damage in the cytotoxicity assays to keratinocyte and Vero E6 cells and did not disrupt the low molecular weight salivary proteins. Its radical scavenging capacity surpassed that of two tested, partly natural, and synthetic mouthwashes, while its antibacterial activity was comparable to the tested products, or higher in the bacterial aerobic respiratory assay. The active compounds responsible for the effects include naturally occurring phenylpropanoids, terpenes, and terpenoids. Our mouthwash proved to be effective in vitro in lowering the copy number of SARS-CoV-2 in circumstances mimicking the salivary environment. CONCLUSIONS The developed product might be a useful tool to impede the transmission and spread of SARS-CoV-2 in interpersonal contact and aerosol-generating conditions. Our mouthwash can help reduce the oral bacterial flora and has an antioxidant activity that facilitates wound healing and prevents adverse effects of smoke in the oral cavity.
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Affiliation(s)
- Bálint Bencze
- Department of Laboratory Medicine, Clinical Centre, Medical School, University of Pécs, Ifjúság Út 13, Pécs, 7624, Hungary
| | - Viktória Temesfői
- Department of Laboratory Medicine, Clinical Centre, Medical School, University of Pécs, Ifjúság Út 13, Pécs, 7624, Hungary.
- Lab-On-a-Chip Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság Útja 20, Pécs, 7624, Hungary.
- Hungarian National Laboratory On Reproduction, University of Pécs, Pécs, 7624, Hungary.
| | - Sourav Das
- Department of Laboratory Medicine, Clinical Centre, Medical School, University of Pécs, Ifjúság Út 13, Pécs, 7624, Hungary
- Lab-On-a-Chip Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság Útja 20, Pécs, 7624, Hungary
| | - Henrietta Papp
- National Laboratory of Virology, University of Pécs, Ifjúság Útja 20, Pécs, 7624, Hungary
- Institute of Biology, Faculty of Sciences, University of Pécs, Ifjúság Útja 6, Pécs, 7624, Hungary
| | - Péter Kaltenecker
- Lab-On-a-Chip Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság Útja 20, Pécs, 7624, Hungary
- Hungarian National Laboratory On Reproduction, University of Pécs, Pécs, 7624, Hungary
| | - Anett Kuczmog
- National Laboratory of Virology, University of Pécs, Ifjúság Útja 20, Pécs, 7624, Hungary
- Institute of Biology, Faculty of Sciences, University of Pécs, Ifjúság Útja 6, Pécs, 7624, Hungary
| | - Ferenc Jakab
- National Laboratory of Virology, University of Pécs, Ifjúság Útja 20, Pécs, 7624, Hungary
- Institute of Biology, Faculty of Sciences, University of Pécs, Ifjúság Útja 6, Pécs, 7624, Hungary
| | - Béla Kocsis
- Department of Medical Microbiology and Immunology, Clinical Centre, Medical School, University of Pécs, Szigeti Út 12, Pécs, 7624, Hungary
| | - Tamás Kőszegi
- Department of Laboratory Medicine, Clinical Centre, Medical School, University of Pécs, Ifjúság Út 13, Pécs, 7624, Hungary
- Lab-On-a-Chip Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság Útja 20, Pécs, 7624, Hungary
- Hungarian National Laboratory On Reproduction, University of Pécs, Pécs, 7624, Hungary
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Moda-Silva LS, Oliveira VC, Silva-Lovato CH, Fernández-Barat L, Watanabe E. Phage-based therapy: promising applicability in the control of oral dysbiosis and respiratory infections. Future Microbiol 2022; 17:1349-1352. [PMID: 36169344 DOI: 10.2217/fmb-2022-0149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- Letícia S Moda-Silva
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil.,Human Exposome & Infectious Diseases Network (HEID), Ribeirão Preto College of Nursing, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Viviane C Oliveira
- Department of Dental Materials & Prosthodontics, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil.,Human Exposome & Infectious Diseases Network (HEID), Ribeirão Preto College of Nursing, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Cláudia H Silva-Lovato
- Department of Dental Materials & Prosthodontics, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Laia Fernández-Barat
- Cellex Laboratory, CibeRes (Centro de Investigación Biomédica en Red de Enfermedades Respiratorias), Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Evandro Watanabe
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil.,Human Exposome & Infectious Diseases Network (HEID), Ribeirão Preto College of Nursing, University of São Paulo, Ribeirão Preto, SP, Brazil
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Conrado PCV, Sakita KM, Arita GS, Galinari CB, Gonçalves RS, Lopes LDG, Lonardoni MVC, Teixeira JJV, Bonfim-Mendonça PS, Kioshima ES. A systematic review of photodynamic therapy as an antiviral treatment: Potential guidance for dealing with SARS-CoV-2. Photodiagnosis Photodyn Ther 2021; 34:102221. [PMID: 33601001 PMCID: PMC7883714 DOI: 10.1016/j.pdpdt.2021.102221] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 02/02/2021] [Accepted: 02/08/2021] [Indexed: 12/15/2022]
Abstract
BACKGROUND SARS-CoV-2, which causes the coronavirus disease (COVID-19), presents high rates of morbidity and mortality around the world. The search to eliminate SARS-CoV-2 is ongoing and urgent. This systematic review seeks to assess whether photodynamic therapy (PDT) could be effective in SARS-CoV-2 inactivation. METHODS The focus question was: Can photodynamic therapy be used as potential guidance for dealing with SARS-CoV-2?". A literature search, according to PRISMA statements, was conducted in the electronic databases PubMed, EMBASE, SCOPUS, Web of Science, LILACS, and Google Scholar. Studies published from January 2004 to June 2020 were analyzed. In vitro and in vivo studies were included that evaluated the effect of PDT mediated by several photosensitizers on RNA and DNA enveloped and non-enveloped viruses. RESULTS From 27 selected manuscripts, 26 publications used in vitro studies, 24 were exclusively in vitro, and two had in vitro/in vivo parts. Only one analyzed publication was exclusively in vivo. Meta-analysis studies were unfeasible due to heterogeneity of the data. The risk of bias was analyzed in all studies. CONCLUSION The in vitro and in vivo studies selected in this systematic review indicated that PDT is capable of photoinactivating enveloped and non-enveloped DNA and RNA viruses, suggesting that PDT can potentially photoinactivate SARS-CoV-2.
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Affiliation(s)
- Pollyanna C V Conrado
- Department of Analysis Clinics and Biomedicine, State University of Maringa, Parana, Brazil
| | - Karina M Sakita
- Department of Analysis Clinics and Biomedicine, State University of Maringa, Parana, Brazil
| | - Glaucia S Arita
- Department of Analysis Clinics and Biomedicine, State University of Maringa, Parana, Brazil
| | - Camila B Galinari
- Department of Analysis Clinics and Biomedicine, State University of Maringa, Parana, Brazil
| | | | - Luciana D G Lopes
- Department of Analysis Clinics and Biomedicine, State University of Maringa, Parana, Brazil
| | - Maria V C Lonardoni
- Department of Analysis Clinics and Biomedicine, State University of Maringa, Parana, Brazil
| | - Jorge J V Teixeira
- Department of Analysis Clinics and Biomedicine, State University of Maringa, Parana, Brazil
| | | | - Erika S Kioshima
- Department of Analysis Clinics and Biomedicine, State University of Maringa, Parana, Brazil.
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Murakami M, Nagano K, Hamaoka K, Kato D, Kawai T, Murakami H, Hasegawa Y. Ozone Water Bactericidal and Cleaning Effects on Oral Diseases-related Planktonic and Bacterial Biofilms. J HARD TISSUE BIOL 2021. [DOI: 10.2485/jhtb.30.27] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Masahiro Murakami
- Department of Gerodontology and Home Care Dentistry, Aichi Gakuin University
- Department of Microbiology, School of Dentistry, Aichi Gakuin University
| | - Keiji Nagano
- Division of Microbiology, Department of Oral Biology, School of Dentistry, Health Sciences University of Hokkaido
| | | | - Daisuke Kato
- Department of Gerodontology and Home Care Dentistry, Aichi Gakuin University
| | - Tatsushi Kawai
- Department of Dental Materials Science, School of Dentistry, Aichi Gakuin University
| | - Hiroshi Murakami
- Department of Gerodontology and Home Care Dentistry, Aichi Gakuin University
| | - Yoshiaki Hasegawa
- Department of Microbiology, School of Dentistry, Aichi Gakuin University
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Valenzuela-Valderrama M, González IA, Palavecino CE. Photodynamic treatment for multidrug-resistant Gram-negative bacteria: Perspectives for the treatment of Klebsiella pneumoniae infections. Photodiagnosis Photodyn Ther 2019; 28:256-264. [PMID: 31505296 DOI: 10.1016/j.pdpdt.2019.08.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 08/09/2019] [Indexed: 12/25/2022]
Abstract
The emergence of multi-drug resistance for pathogenic bacteria is one of the most pressing global threats to human health in the 21st century. Hence, the availability of new treatment becomes indispensable to prevent morbidity and mortality caused by infectious agents. This article reviews the antimicrobial properties of photodynamic therapy (PDT), which is based on the use of photosensitizers compounds (PSs). The PSs are non-toxic small molecules, which induce oxidative stress only under excitation with light. Then, the PDT has the advantage to be locally activated using phototherapy devices. We focus on PDT for the Klebsiella pneumoniae, as an example of Gram-negative bacteria, due to its relevance as an agent of health-associated infections (HAI) and a multi-drug resistant bacteria. K. pneumoniae is a fermentative bacillus, member of the Enterobacteriaceae family, which is most commonly associated with producing infection of the urinary tract (UTI) and pneumonia. K. pneumoniae infections may occur in deep organs such as bladder or lungs tissues; therefore, activating light must get access or penetrate tissues with sufficient power to produce effective PDT. Consequently, the rationale for selecting the most appropriate PSs, as well as photodynamic devices and photon fluence doses, were reviewed. Also, the mechanisms by which PDT activates the immune system and its importance to eradicate the infection successfully, are discussed.
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Affiliation(s)
- Manuel Valenzuela-Valderrama
- Laboratorio de Microbiología Celular, Instituto de Investigación e Innovación en Salud, Facultad de Ciencias de la Salud, Universidad Central de Chile, Chile; Centro de Estudios Avanzados en Enfermedades Crónicas (ACCDiS), Independencia, Santiago 8380000, Chile.
| | - Iván Alonzo González
- Instituto de Investigación e Innovación en Salud, Facultad de Ciencias de la Salud, Universidad Central de Chile, Chile.
| | - Christian Erick Palavecino
- Laboratorio de Microbiología Celular, Instituto de Investigación e Innovación en Salud, Facultad de Ciencias de la Salud, Universidad Central de Chile, Chile.
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