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Zuberi A, Ahmad N, Ahmad H, Saeed M, Ahmad I. Beyond antibiotics: CRISPR/Cas9 triumph over biofilm-associated antibiotic resistance infections. Front Cell Infect Microbiol 2024; 14:1408569. [PMID: 39035353 PMCID: PMC11257871 DOI: 10.3389/fcimb.2024.1408569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Accepted: 05/27/2024] [Indexed: 07/23/2024] Open
Abstract
A complex structure known as a biofilm is formed when a variety of bacterial colonies or a single type of cell in a group sticks to a surface. The extracellular polymeric compounds that encase these cells, often consisting of proteins, eDNA, and polysaccharides, exhibit strong antibiotic resistance. Concerns about biofilm in the pharmaceutical industry, public health, and medical fields have sparked a lot of interest, as antibiotic resistance is a unique capacity exhibited by these biofilm-producing bacteria, which increases morbidity and death. Biofilm formation is a complicated process that is controlled by several variables. Insights into the processes to target for the therapy have been gained from multiple attempts to dissect the biofilm formation process. Targeting pathogens within a biofilm is profitable because the bacterial pathogens become considerably more resistant to drugs in the biofilm state. Although biofilm-mediated infections can be lessened using the currently available medications, there has been a lot of focus on the development of new approaches, such as bioinformatics tools, for both treating and preventing the production of biofilms. Technologies such as transcriptomics, metabolomics, nanotherapeutics and proteomics are also used to develop novel anti-biofilm agents. These techniques help to identify small compounds that can be used to inhibit important biofilm regulators. The field of appropriate control strategies to avoid biofilm formation is expanding quickly because of this spurred study. As a result, the current article addresses our current knowledge of how biofilms form, the mechanisms by which bacteria in biofilms resist antibiotics, and cutting-edge treatment approaches for infections caused by biofilms. Furthermore, we have showcased current ongoing research utilizing the CRISPR/Cas9 gene editing system to combat bacterial biofilm infections, particularly those brought on by lethal drug-resistant pathogens, concluded the article with a novel hypothesis and aspirations, and acknowledged certain limitations.
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Affiliation(s)
- Azna Zuberi
- Department of Molecular, Cellular & Developmental Biology, University of Colorado Boulder, Boulder, CO, United States
- Department of Obs & Gynae, Northwestern University, Chicago, IL, United States
| | - Nayeem Ahmad
- Department of Biophysics, All India Institute of Medical Science, New Delhi, India
- Department of Microbiology, Immunology, and Infectious Diseases, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Bahrain
| | - Hafiz Ahmad
- Department of Medical Microbiology & Immunology, Ras Al Khaimah (RAK) College of Medical Sciences, Ras Al Khaimah (RAK) Medical and Health Sciences University, Ras Al Khaimah, United Arab Emirates
| | - Mohd Saeed
- Department of Biology, College of Science University of Hail, Hail, Saudi Arabia
| | - Irfan Ahmad
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
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2
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Giedraitiene A, Tatarunas V, Kaminskaite K, Meskauskaite U, Boieva S, Ajima Y, Ciapiene I, Veikutiene A, Zvikas V, Kupstyte-Kristapone N, Jakstas V, Luksiene D, Tamosiunas A, Lesauskaite V. Enterobacterales Biofilm-Specific Genes and Antimicrobial and Anti-Inflammatory Biomarkers in the Blood of Patients with Ischemic Heart Disease. Diagnostics (Basel) 2024; 14:546. [PMID: 38473018 DOI: 10.3390/diagnostics14050546] [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: 02/03/2024] [Revised: 02/29/2024] [Accepted: 03/01/2024] [Indexed: 03/14/2024] Open
Abstract
BACKGROUND Ischemic heart disease (IHD) is the most prevalent type of cardiovascular disease. The main cause of IHD is atherosclerosis, which is a multifactorial inflammatory disease of blood vessels. Studies show that bacteria might have a significant impact on the pathogenesis of atherosclerosis and plaque rupture. This study aimed to evaluate the complexity of interactions between bacteria and the human body concerning metabolites and bacterial genes in patients with ischemic heart disease. METHODS Bacterial 16S rDNA and wcaF, papC, and sdhC genes were detected in whole blood using a real-time PCR methodology. An enzyme-linked immunosorbent assay was used to measure the concentration of the LL-37 protein. An analysis of ARA in blood plasma was performed. RESULTS Bacterial 16S rDNA was detected in 31% of the study patients, and the genes wcaF and sdhC in 20%. Enterobacterales genes were detected more frequently in patients younger than 65 years than in patients aged 65 years and older (p = 0.018) and in patients with type 2 diabetes (p = 0.048). Concentrations of the human antimicrobial peptide LL-37 and 12S-HETE concentrations were determined to be higher if patients had 16S rDNA and biofilm-specific genes. CONCLUSIONS The results of this study enhance the understanding that Enterobacterales bacteria may participate in the pathogenesis of atherosclerosis and IHD. Bacterial DNA and host metabolites in higher concentrations appear to be detected.
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Affiliation(s)
- Agne Giedraitiene
- Institute of Microbiology and Virology, Lithuanian University of Health Sciences, Eiveniu 4, LT 50161 Kaunas, Lithuania
| | - Vacis Tatarunas
- Institute of Cardiology, Lithuanian University of Health Sciences, Sukileliu 15, LT 50103 Kaunas, Lithuania
| | - Kornelija Kaminskaite
- Medical Academy, Lithuanian University of Health Sciences, A. Mickeviciaus 9, LT 44307 Kaunas, Lithuania
| | - Ugne Meskauskaite
- Medical Academy, Lithuanian University of Health Sciences, A. Mickeviciaus 9, LT 44307 Kaunas, Lithuania
| | - Svitlana Boieva
- Institute of Cardiology, Lithuanian University of Health Sciences, Sukileliu 15, LT 50103 Kaunas, Lithuania
| | - Yu Ajima
- Medical Academy, Lithuanian University of Health Sciences, A. Mickeviciaus 9, LT 44307 Kaunas, Lithuania
- School of Medicine, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan
| | - Ieva Ciapiene
- Institute of Cardiology, Lithuanian University of Health Sciences, Sukileliu 15, LT 50103 Kaunas, Lithuania
| | - Audrone Veikutiene
- Institute of Cardiology, Lithuanian University of Health Sciences, Sukileliu 15, LT 50103 Kaunas, Lithuania
| | - Vaidotas Zvikas
- Institute of Pharmaceutical Technologies, Lithuanian University of Health Sciences, Sukileliu 13, LT 50161 Kaunas, Lithuania
| | - Nora Kupstyte-Kristapone
- Medical Academy, Lithuanian University of Health Sciences, A. Mickeviciaus 9, LT 44307 Kaunas, Lithuania
| | - Valdas Jakstas
- Institute of Pharmaceutical Technologies, Lithuanian University of Health Sciences, Sukileliu 13, LT 50161 Kaunas, Lithuania
| | - Dalia Luksiene
- Institute of Cardiology, Lithuanian University of Health Sciences, Sukileliu 15, LT 50103 Kaunas, Lithuania
| | - Abdonas Tamosiunas
- Institute of Cardiology, Lithuanian University of Health Sciences, Sukileliu 15, LT 50103 Kaunas, Lithuania
| | - Vaiva Lesauskaite
- Institute of Cardiology, Lithuanian University of Health Sciences, Sukileliu 15, LT 50103 Kaunas, Lithuania
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3
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Du Y, Wang J, Fan W, Huang R, Wang H, Liu G. Preclinical study of diabetic foot ulcers: From pathogenesis to vivo/vitro models and clinical therapeutic transformation. Int Wound J 2023; 20:4394-4409. [PMID: 37438679 PMCID: PMC10681512 DOI: 10.1111/iwj.14311] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 06/28/2023] [Indexed: 07/14/2023] Open
Abstract
Diabetic foot ulcer (DFU), a common intractable chronic complication of diabetes mellitus (DM), has a prevalence of up to 25%, with more than 17% of the affected patients at risk of amputation or even death. Vascular risk factors, including vascular stenosis or occlusion, dyslipidemia, impaired neurosensory and motor function, and skin infection caused by trauma, all increase the risk of DFU in patients with diabetes. Therefore, diabetic foot is not a single pathogenesis. Preclinical studies have contributed greatly to the pathogenesis determination and efficacy evaluation of DFU. Many therapeutic tools are currently being investigated using DFU animal models for effective clinical translation. However, preclinical animal models that completely mimic the pathogenesis of DFU remain unexplored. Therefore, in this review, the preparation methods and evaluation criteria of DFU animal models with three major pathological mechanisms: neuropathy, angiopathy and DFU infection were discussed in detail. And the advantages and disadvantages of various DFU animal models for clinical sign simulation. Furthermore, the current status of vitro models of DFU and some preclinical studies have been transformed into clinical treatment programs, such as medical dressings, growth factor therapy, 3D bioprinting and pre-vascularization, Traditional Chinese Medicine treatment. However, because of the complexity of the pathological mechanism of DFU, the clinical transformation of DFU model still faces many challenges. We need to further optimize the existing preclinical studies of DFU to provide an effective animal platform for the future study of pathophysiology and clinical treatment of DFU.
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Affiliation(s)
- Yuqing Du
- Department of Peripheral Vascular SurgeryInstitute of surgery of traditional Chinese Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghaiChina
| | - Jie Wang
- Department of Peripheral Vascular SurgeryInstitute of surgery of traditional Chinese Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghaiChina
- Endocrinology departmentShanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese MedicineShanghaiChina
| | - Weijing Fan
- Department of Peripheral Vascular SurgeryInstitute of surgery of traditional Chinese Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghaiChina
| | - Renyan Huang
- Department of Peripheral Vascular SurgeryInstitute of surgery of traditional Chinese Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghaiChina
| | - Hongfei Wang
- Department of Peripheral Vascular SurgeryInstitute of surgery of traditional Chinese Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghaiChina
| | - Guobin Liu
- Department of Peripheral Vascular SurgeryInstitute of surgery of traditional Chinese Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghaiChina
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Patrakka O, Tuomisto S, Pienimäki J, Ollikainen J, Oksala N, Lampinen V, Ojanen MJT, Huhtala H, Hytönen VP, Lehtimäki T, Martiskainen M, Karhunen PJ. Thrombus Aspirates From Patients With Acute Ischemic Stroke Are Infiltrated by Viridans Streptococci. J Am Heart Assoc 2023; 12:e030639. [PMID: 37982253 PMCID: PMC10727284 DOI: 10.1161/jaha.123.030639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Accepted: 10/27/2023] [Indexed: 11/21/2023]
Abstract
BACKGROUND Acute ischemic stroke may be due to embolism from ruptured atherosclerotic carotid arteries. DNA of oral bacteria, mainly the viridans streptococci group, has been detected in thrombus aspirates of patients with ischemic stroke as well as in carotid endarterectomy samples. Because viridans streptococci are known to possess thrombogenic properties, we studied whether their presence in thrombus aspirates and in carotid artery specimens can be confirmed using bacterial immunohistochemistry. METHODS AND RESULTS Thrombus aspirates from 61 patients with ischemic stroke (70.5% men; mean age, 66.8 years) treated with mechanical thrombectomy, as well as carotid endarterectomy samples from 20 symptomatic patients (65.0% men; mean age, 66.2 years) and 48 carotid artery samples from nonstroke autopsy cases (62.5% men; mean age, 66.4 years), were immunostained with an antibody cocktail against 3 species (Streptococcus sanguinis, Streptococcus mitis, and Streptococcus gordonii) of viridans streptococci. Of the thrombus aspirates, 84.8% were immunopositive for viridans streptococci group bacteria, as were 80.0% of the carotid endarterectomy samples, whereas immunopositivity was observed in 31.3% of the carotid artery samples from nonstroke autopsies. Most streptococci were detected inside neutrophil granulocytes, but there were also remnants of bacterial biofilm as well as free bacterial infiltrates in some samples. CONCLUSIONS Oral streptococci were found in aspirated thrombi of patients with acute ischemic stroke as well as in carotid artery samples. Our results suggest that viridans streptococci group bacteria may play a role in the pathophysiology of ischemic stroke.
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Affiliation(s)
- Olli Patrakka
- Department of Forensic Medicine, Faculty of Medicine and Health TechnologyTampere University and Fimlab LaboratoriesTampereFinland
| | - Sari Tuomisto
- Department of Forensic Medicine, Faculty of Medicine and Health TechnologyTampere University and Fimlab LaboratoriesTampereFinland
| | | | - Jyrki Ollikainen
- Department of NeurologyTampere University HospitalTampereFinland
| | - Niku Oksala
- Vascular CentreTampere University HospitalTampereFinland
- Surgery, Faculty of Medicine and Health TechnologyTampere UniversityTampereFinland
| | - Vili Lampinen
- Department of Forensic Medicine, Faculty of Medicine and Health TechnologyTampere University and Fimlab LaboratoriesTampereFinland
| | - Markus J. T. Ojanen
- Department of Forensic Medicine, Faculty of Medicine and Health TechnologyTampere University and Fimlab LaboratoriesTampereFinland
- Laboratory of Protein Dynamics, Faculty of Medicine and Health TechnologyTampere UniversityTampereFinland
| | - Heini Huhtala
- Faculty of Social SciencesTampere UniversityTampereFinland
| | - Vesa P. Hytönen
- Department of Forensic Medicine, Faculty of Medicine and Health TechnologyTampere University and Fimlab LaboratoriesTampereFinland
- Laboratory of Protein Dynamics, Faculty of Medicine and Health TechnologyTampere UniversityTampereFinland
| | - Terho Lehtimäki
- Department of Clinical Chemistry, Faculty of Medicine and Health TechnologyTampere University, Fimlab Laboratories and Finnish Cardiovascular Research Center TampereTampereFinland
| | - Mika Martiskainen
- Department of Forensic Medicine, Faculty of Medicine and Health TechnologyTampere University and Fimlab LaboratoriesTampereFinland
- National Institute for Health and WelfareHelsinkiFinland
| | - Pekka J. Karhunen
- Department of Forensic Medicine, Faculty of Medicine and Health TechnologyTampere University and Fimlab LaboratoriesTampereFinland
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Perry EK, Tan MW. Bacterial biofilms in the human body: prevalence and impacts on health and disease. Front Cell Infect Microbiol 2023; 13:1237164. [PMID: 37712058 PMCID: PMC10499362 DOI: 10.3389/fcimb.2023.1237164] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 08/11/2023] [Indexed: 09/16/2023] Open
Abstract
Bacterial biofilms can be found in most environments on our planet, and the human body is no exception. Consisting of microbial cells encased in a matrix of extracellular polymers, biofilms enable bacteria to sequester themselves in favorable niches, while also increasing their ability to resist numerous stresses and survive under hostile circumstances. In recent decades, biofilms have increasingly been recognized as a major contributor to the pathogenesis of chronic infections. However, biofilms also occur in or on certain tissues in healthy individuals, and their constituent species are not restricted to canonical pathogens. In this review, we discuss the evidence for where, when, and what types of biofilms occur in the human body, as well as the diverse ways in which they can impact host health under homeostatic and dysbiotic states.
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Affiliation(s)
| | - Man-Wah Tan
- Department of Infectious Diseases, Genentech, South San Francisco, CA, United States
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Nashawi M, Sheikh O, Mir M, Te T, Chilton R. The systemic implication of novel non-statin therapies in cardiovascular diabetology: PCSK9 as a case model. Cardiovasc Endocrinol Metab 2020; 9:143-152. [PMID: 33225229 PMCID: PMC7673769 DOI: 10.1097/xce.0000000000000204] [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: 02/12/2020] [Accepted: 03/23/2020] [Indexed: 12/17/2022]
Abstract
PCSK9, like other novel non-statin drugs were primarily developed to help patients achieve low-density lipoprotein cholesterol targets, especially in patients with dyslipidemia not achieving lipid goals with statins due to poor tolerance or inadequate response. PCSK9 inhibitors, in addition to modulating lipid metabolism, improve mortality outcomes in cardiovascular disease. These benefits are markedly pronounced in patients with type 2 diabetes mellitus. However, these benefits do not come without associated risk. Multiple trials, studies, and case reports have attempted to explain observed outcomes with PCSK9 expression and administration of PCSK9 inhibitors from multiple perspectives, such as their effects on insulin sensitivity and glucose tolerance, changes in renal physiology, thyroid physiology, vascular tone, intestinal regulation of lipids, and improved cardiovascular function. These agents represent an opportunity for physicians to exercise prudence by using appropriate clinical judgement when managing comorbidities in the hyperglycemic patient, a concept that extends to other novel non-statin drugs.
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Affiliation(s)
- Mouhamed Nashawi
- Division of Medicine-Cardiology, UT Health San Antonio, San Antonio, Texas, USA
| | - Omar Sheikh
- Division of Medicine-Cardiology, UT Health San Antonio, San Antonio, Texas, USA
| | - Mahnoor Mir
- Division of Medicine-Cardiology, UT Health San Antonio, San Antonio, Texas, USA
| | - Tri Te
- Division of Medicine-Cardiology, UT Health San Antonio, San Antonio, Texas, USA
| | - Robert Chilton
- Division of Medicine-Cardiology, UT Health San Antonio, San Antonio, Texas, USA
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7
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Vestby LK, Grønseth T, Simm R, Nesse LL. Bacterial Biofilm and its Role in the Pathogenesis of Disease. Antibiotics (Basel) 2020; 9:E59. [PMID: 32028684 PMCID: PMC7167820 DOI: 10.3390/antibiotics9020059] [Citation(s) in RCA: 395] [Impact Index Per Article: 98.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 01/28/2020] [Accepted: 01/29/2020] [Indexed: 12/31/2022] Open
Abstract
Recognition of the fact that bacterial biofilm may play a role in the pathogenesis of disease has led to an increased focus on identifying diseases that may be biofilm-related. Biofilm infections are typically chronic in nature, as biofilm-residing bacteria can be resilient to both the immune system, antibiotics, and other treatments. This is a comprehensive review describing biofilm diseases in the auditory, the cardiovascular, the digestive, the integumentary, the reproductive, the respiratory, and the urinary system. In most cases reviewed, the biofilms were identified through various imaging technics, in addition to other study approaches. The current knowledge on how biofilm may contribute to the pathogenesis of disease indicates a number of different mechanisms. This spans from biofilm being a mere reservoir of pathogenic bacteria, to playing a more active role, e.g., by contributing to inflammation. Observations also indicate that biofilm does not exclusively occur extracellularly, but may also be formed inside living cells. Furthermore, the presence of biofilm may contribute to development of cancer. In conclusion, this review shows that biofilm is part of many, probably most chronic infections. This is important knowledge for development of effective treatment strategies for such infections.
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Affiliation(s)
- Lene K. Vestby
- Department of Immunology and Virology, Norwegian Veterinary Institute, P.O. Box 750 Sentrum, N-0106 Oslo, Norway;
| | - Torstein Grønseth
- Department of Otolaryngology, Head and Neck Surgery, Oslo University Hospital HF, Postboks 4950 Nydalen, 0424 Oslo, Norway;
| | - Roger Simm
- Institute of Oral Biology, University of Oslo, P.O. Box 1052, Blindern, 0316 Oslo, Norway;
| | - Live L. Nesse
- Department of Food Safety and Animal Health Research, Norwegian Veterinary Institute, P.O. Box 750 Sentrum, N-0106 Oslo, Norway
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8
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Liccardo D, Cannavo A, Spagnuolo G, Ferrara N, Cittadini A, Rengo C, Rengo G. Periodontal Disease: A Risk Factor for Diabetes and Cardiovascular Disease. Int J Mol Sci 2019; 20:ijms20061414. [PMID: 30897827 PMCID: PMC6470716 DOI: 10.3390/ijms20061414] [Citation(s) in RCA: 218] [Impact Index Per Article: 43.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Revised: 02/25/2019] [Accepted: 03/18/2019] [Indexed: 12/18/2022] Open
Abstract
Periodontitis is a chronic inflammatory disease, initiated by the presence of a bacterial biofilm, called dental plaque, which affects both the periodontal ligaments and bone surrounding teeth. In the last decades, several lines of evidence have supported the existence of a relationship between periodontitis and systemic health. For instance, as periodontitis acts within the same chronic inflammatory model seen in cardiovascular disease (CVD), or other disorders, such as diabetes, several studies have suggested the existence of a bi-directional link between periodontal health and these pathologies. For instance, people with diabetes are more susceptible to infections and are more likely to suffer from periodontitis than people without this syndrome. Analogously, it is now evident that cardiac disorders are worsened by periodontitis, both experimentally and in humans. For all these reasons, it is very plausible that preventing periodontitis has an impact on the onset or progression of CVD and diabetes. On these grounds, in this review, we have provided an updated account on the current knowledge concerning periodontal disease and the adverse effects exerted on the cardiovascular system health and diabetes, informing readers on the most recent preclinical studies and epidemiological evidence.
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Affiliation(s)
- Daniela Liccardo
- Department of Translational Medical Sciences, Federico II University of Naples, 80131 Naples, Italy.
| | - Alessandro Cannavo
- Department of Translational Medical Sciences, Federico II University of Naples, 80131 Naples, Italy.
- Center for Translational Medicine, Temple University, Philadelphia, PA 19140, USA.
| | - Gianrico Spagnuolo
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, Federico II University of Naples, 80131 Naples, Italy.
- Institute of Dentistry, I. M. Sechenov First Moscow State Medical University, 119146 Moscow, Russia.
| | - Nicola Ferrara
- Department of Translational Medical Sciences, Federico II University of Naples, 80131 Naples, Italy.
- Istituti Clinici Scientifici- ICS Maugeri S.p.A. Telese Terme (BN), 82037 Pavia, Italy.
| | - Antonio Cittadini
- Department of Translational Medical Sciences, Federico II University of Naples, 80131 Naples, Italy.
| | - Carlo Rengo
- Department of Prosthodontics and Dental Materials, School of Dental Medicine, University of Siena, 53100 Siena, Italy.
| | - Giuseppe Rengo
- Department of Translational Medical Sciences, Federico II University of Naples, 80131 Naples, Italy.
- Istituti Clinici Scientifici- ICS Maugeri S.p.A. Telese Terme (BN), 82037 Pavia, Italy.
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Hansen GM, Belstrøm D, Nilsson M, Helqvist S, Nielsen CH, Holmstrup P, Tolker-Nielsen T, Givskov M, Hansen PR. Pseudomonas aeruginosa Microcolonies in Coronary Thrombi from Patients with ST-Segment Elevation Myocardial Infarction. PLoS One 2016; 11:e0168771. [PMID: 28030624 PMCID: PMC5193428 DOI: 10.1371/journal.pone.0168771] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 12/06/2016] [Indexed: 12/24/2022] Open
Abstract
Chronic infection is associated with an increased risk of atherothrombotic disease and direct bacterial infection of arteries has been suggested to contribute to the development of unstable atherosclerotic plaques. In this study, we examined coronary thrombi obtained in vivo from patients with ST-segment elevation myocardial infarction (STEMI) for the presence of bacterial DNA and bacteria. Aspirated coronary thrombi from 22 patients with STEMI were collected during primary percutaneous coronary intervention and arterial blood control samples were drawn from radial or femoral artery sheaths. Analyses were performed using 16S polymerase chain reaction and with next-generation sequencing to determine bacterial taxonomic classification. In selected thrombi with the highest relative abundance of Pseudomonas aeruginosa DNA, peptide nucleic acid fluorescence in situ hybridization (PNA-FISH) with universal and species specific probes was performed to visualize bacteria within thrombi. From the taxonomic analysis we identified a total of 55 different bacterial species. DNA from Pseudomonas aeruginosa represented the only species that was significantly associated with either thrombi or blood and was >30 times more abundant in thrombi than in arterial blood (p<0.0001). Whole and intact bacteria present as biofilm microcolonies were detected in selected thrombi using universal and P. aeruginosa-specific PNA-FISH probes. P. aeruginosa and vascular biofilm infection in culprit lesions may play a role in STEMI, but causal relationships remain to be determined.
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Affiliation(s)
- Gorm Mørk Hansen
- Department of Cardiology, Herlev and Gentofte University Hospital, Copenhagen, Denmark
- Costerton Biofilm Center, Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, Copenhagen University, Copenhagen, Denmark
- * E-mail:
| | - Daniel Belstrøm
- Section of Periodontology, Department of Odontology, Faculty of Health and Medical Sciences, Copenhagen University, Copenhagen, Denmark
| | - Martin Nilsson
- Costerton Biofilm Center, Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, Copenhagen University, Copenhagen, Denmark
| | - Steffen Helqvist
- Department of Cardiology, Rigshospitalet University Hospital, Copenhagen, Denmark
| | - Claus Henrik Nielsen
- Institute for Inflammation Research, Department of Infectious Diseases and Rheumatology, Rigshospitalet University Hospital, Copenhagen, Denmark
| | - Palle Holmstrup
- Section of Periodontology, Department of Odontology, Faculty of Health and Medical Sciences, Copenhagen University, Copenhagen, Denmark
| | - Tim Tolker-Nielsen
- Costerton Biofilm Center, Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, Copenhagen University, Copenhagen, Denmark
| | - Michael Givskov
- Costerton Biofilm Center, Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, Copenhagen University, Copenhagen, Denmark
- Singapore Center on Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University, Singapore
| | - Peter Riis Hansen
- Department of Cardiology, Herlev and Gentofte University Hospital, Copenhagen, Denmark
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