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Himawan A, Vora LK, Permana AD, Sudir S, Nurdin AR, Nislawati R, Hasyim R, Scott CJ, Donnelly RF. Where Microneedle Meets Biomarkers: Futuristic Application for Diagnosing and Monitoring Localized External Organ Diseases. Adv Healthc Mater 2023; 12:e2202066. [PMID: 36414019 DOI: 10.1002/adhm.202202066] [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: 08/16/2022] [Revised: 11/03/2022] [Indexed: 11/24/2022]
Abstract
Extracellular tissue fluids are interesting biomatrices that have recently attracted scientists' interest. Many significant biomarkers for localized external organ diseases have been isolated from this biofluid. In the diagnostic and disease monitoring context, measuring biochemical entities from the fluids surrounding the diseased tissues may give more important clinical value than measuring them at a systemic level. Despite all these facts, pushing tissue fluid-based diagnosis and monitoring forward to clinical settings faces one major problem: its accessibility. Most extracellular tissue fluid, such as interstitial fluid (ISF), is abundant but hard to collect, and the currently available technologies are invasive and expensive. This is where novel microneedle technology can help tackle this significant obstacle. The ability of microneedle technology to minimally invasively access tissue fluid-containing biomarkers will enable ISF and other tissue fluid utilization in the clinical diagnosis and monitoring of localized diseases. This review attempts to present the current pursuit of the application of microneedle systems as a diagnostic and monitoring platform, along with the recent progress of biomarker detection in diagnosing and monitoring localized external organ diseases. Then, the potential use of various microneedles in future clinical diagnostics and monitoring of localized diseases is discussed by presenting the currently studied cases.
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Affiliation(s)
- Achmad Himawan
- School of Pharmacy, Queen's University Belfast, Belfast, BT97BL, UK.,Department of Pharmaceutical Science and Technology, Faculty of Pharmacy, Hasanuddin University, Makassar, 90245, Indonesia
| | | | - Andi Dian Permana
- Department of Pharmaceutical Science and Technology, Faculty of Pharmacy, Hasanuddin University, Makassar, 90245, Indonesia
| | - Sumarheni Sudir
- Department of Pharmacy, Faculty of Pharmacy, Hasanuddin University, Makassar, 90245, Indonesia
| | - Airin R Nurdin
- Department of Dermatology and Venereology, Faculty of Medicine, Hasanuddin University, Makassar, 90245, Indonesia.,Hasanuddin University Hospital, Hasanuddin University, Makassar, 90245, Indonesia
| | - Ririn Nislawati
- Hasanuddin University Hospital, Hasanuddin University, Makassar, 90245, Indonesia.,Department of Ophthalmology, Faculty of Medicine, Hasanuddin University, Makassar, 90245, Indonesia
| | - Rafikah Hasyim
- Department of Oral Biology, Faculty of Dentistry, Hasanuddin University, Makassar, 90245, Indonesia
| | - Christopher J Scott
- Patrick G Johnson Centre for Cancer Research, Queen's University Belfast, Belfast, BT97BL, UK
| | - Ryan F Donnelly
- School of Pharmacy, Queen's University Belfast, Belfast, BT97BL, UK
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2
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Twenty years of amino acid determination using capillary electrophoresis: A review. Anal Chim Acta 2021; 1174:338233. [DOI: 10.1016/j.aca.2021.338233] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 01/14/2021] [Accepted: 01/16/2021] [Indexed: 12/28/2022]
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Plachokova AS, Andreu-Sánchez S, Noz MP, Fu J, Riksen NP. Oral Microbiome in Relation to Periodontitis Severity and Systemic Inflammation. Int J Mol Sci 2021; 22:ijms22115876. [PMID: 34070915 PMCID: PMC8199296 DOI: 10.3390/ijms22115876] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/18/2021] [Accepted: 05/24/2021] [Indexed: 12/14/2022] Open
Abstract
Systemic inflammation induced by periodontitis is suggested to be the link between periodontitis and cardiovascular disease. The aim of this work was to explore the oral microbiome in periodontitis in relation to disease severity and systemic inflammation. The saliva and subgingival microbiome from periodontal pocket samples of patients with severe (n = 12) and mild periodontitis (n = 13) were analyzed using metagenomic shotgun sequencing. The taxa and pathways abundances were quantified. The diversity was assessed and the abundances to phenotype associations were performed using ANCOM and linear regression. A panel of inflammatory markers was measured in blood and was associated with taxa abundance. The microbial diversity and species richness did not differ between severe and mild periodontitis in either saliva or periodontal pockets. However, there were significant differences in the microbial composition between severe and mild periodontitis in the subgingival microbiome (i.e., pocket samples) and, in a lower grade, in saliva, and this is positively associated with systemic inflammatory markers. The “red complex” and “cluster B” abundances in periodontal pockets were strongly associated with inflammatory markers interleukin-6 and the white blood cell count. Our data suggest that systemic inflammation in severe periodontitis may be driven by the oral microbiome and may support the indirect (inflammatory) mechanism for the association between periodontitis and cardiovascular disease.
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Affiliation(s)
- Adelina S. Plachokova
- Department of Dentistry, Radboud University Medical Center, 6525 EX Nijmegen, The Netherlands
- Correspondence: (A.S.P.); (N.P.R.)
| | - Sergio Andreu-Sánchez
- Department of Genetics, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands; (S.A.-S.); (J.F.)
- Department of Pediatrics, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands
| | - Marlies P. Noz
- Department of Internal Medicine and Radboud Institute for Molecular Life Science (RIMLS), Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands;
| | - Jingyuan Fu
- Department of Genetics, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands; (S.A.-S.); (J.F.)
- Department of Pediatrics, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands
| | - Niels P. Riksen
- Department of Internal Medicine and Radboud Institute for Molecular Life Science (RIMLS), Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands;
- Correspondence: (A.S.P.); (N.P.R.)
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Leira Y, Mascarenhas P, Blanco J, Sobrino T, Mendes JJ, Machado V, Botelho J. Network Protein Interaction in the Link between Stroke and Periodontitis Interplay: A Pilot Bioinformatic Analysis. Genes (Basel) 2021; 12:genes12050787. [PMID: 34065604 PMCID: PMC8160956 DOI: 10.3390/genes12050787] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/10/2021] [Accepted: 05/19/2021] [Indexed: 12/11/2022] Open
Abstract
The clinical interaction between stroke and periodontitis has been consistently studied and confirmed. Hence, exploring potentially new protein interactions in this association using bioinformatic strategies presents potential interest. In this exploratory study, we conducted a protein-protein network interaction (PPI) search with documented encoded proteins for both stroke and periodontitis. Genes of interest were collected via GWAS database. The STRING database was used to predict the PPI networks, first in a sensitivity purpose (confidence cut-off of 0.7), and then with a highest confidence cut-off (0.9). Genes over-representation was inspected in the final network. As a result, we foresee a prospective protein network of interaction between stroke and periodontitis. Inflammation, pro-coagulant/pro-thrombotic state and, ultimately, atheroma plaque rupture is the main biological mechanism derived from the network. These pilot results may pave the way to future molecular and therapeutic studies to further comprehend the mechanisms between these two conditions.
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Affiliation(s)
- Yago Leira
- Periodontology Unit, Faculty of Odontology and Medicine, Medical-Surgical Research Group, Health Research Institute of Santiago de Compostela, University of Santiago de Compostela, 15706 Santiago de Compostela, Spain; (Y.L.); (J.B.)
- Clinical Neurosciences Research Laboratory, Health Research Institute of Santiago de Compostela, University Clinical Hospital, 15706 Santiago de Compostela, Spain;
- Periodontology Unit, UCL Eastman Dental Institute & NIHR UCLH Biomedical Research Centre, University College London, London WC1E 6BT, UK
| | - Paulo Mascarenhas
- Center for Medical Genetics and Pediatric Nutrition Egas Moniz, Instituto Universitário Egas Moniz (IUEM), 2829-511 Caparica, Portugal;
- Evidence-Based Hub, Clinical Research Unit (CRU), Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Egas Moniz—Cooperativa de Ensino Superior, CRL, 2829-511 Caparica, Portugal; (J.J.M.); (V.M.)
| | - Juan Blanco
- Periodontology Unit, Faculty of Odontology and Medicine, Medical-Surgical Research Group, Health Research Institute of Santiago de Compostela, University of Santiago de Compostela, 15706 Santiago de Compostela, Spain; (Y.L.); (J.B.)
| | - Tomás Sobrino
- Clinical Neurosciences Research Laboratory, Health Research Institute of Santiago de Compostela, University Clinical Hospital, 15706 Santiago de Compostela, Spain;
| | - José João Mendes
- Evidence-Based Hub, Clinical Research Unit (CRU), Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Egas Moniz—Cooperativa de Ensino Superior, CRL, 2829-511 Caparica, Portugal; (J.J.M.); (V.M.)
| | - Vanessa Machado
- Evidence-Based Hub, Clinical Research Unit (CRU), Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Egas Moniz—Cooperativa de Ensino Superior, CRL, 2829-511 Caparica, Portugal; (J.J.M.); (V.M.)
- Periodontology Department, Clinical Research Unit (CRU), Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Egas Moniz—Cooperata de Ensino Superior, CRL, 2829-511 Caparica, Portugal
| | - João Botelho
- Evidence-Based Hub, Clinical Research Unit (CRU), Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Egas Moniz—Cooperativa de Ensino Superior, CRL, 2829-511 Caparica, Portugal; (J.J.M.); (V.M.)
- Periodontology Department, Clinical Research Unit (CRU), Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Egas Moniz—Cooperata de Ensino Superior, CRL, 2829-511 Caparica, Portugal
- Correspondence:
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Sola VM, Aguilar JJ, Vazquez Mosquera AP, Carpentieri AR. Melatonin is an effective protector of gingival cells damaged by the cytotoxic effect of glutamate and DL-buthionine sulfoximine. J Periodontal Res 2020; 56:154-161. [PMID: 32965035 DOI: 10.1111/jre.12806] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 08/08/2020] [Accepted: 09/02/2020] [Indexed: 11/27/2022]
Abstract
BACKGROUND AND OBJECTIVE Cellular damage related to oxidative stress (OS) is implicated in periodontal diseases (PD). Melatonin (MEL) has multiple functions, and it has been described as a potential treatment for PD. We aim at evaluating the protective effects of MEL on an in vitro model of cellular damage triggered by glutamate (GLUT) and DL-buthionine sulfoximine (BSO), on gingival cells (GCs) in culture. MATERIAL AND METHODS A primary culture of GCs from Wistar rats was developed in order to test the protective property of MEL; BSO and GLUT were administered alone as well as in combination with MEL. The viability and apoptosis were measured with MTT assay and TUNEL, respectively, and the concentration of superoxide anion ( O 2 - ) was measured with the NBT method. RESULTS The combination of BSO and GLUT treatment resulted in a decreased viability of GCs. This was evidenced by the increase in both the production of superoxide anion and apoptosis. After MEL administration, the oxidant and pro-apoptotic effects of BSO and GLUT were totally counteracted. CONCLUSIONS These findings demonstrated that MEL has an effective protective role on GCs subjected to cellular damage in a model of OS and cytotoxicity triggered by BSO and GLUT. Consequently, MEL could be used as a therapeutic agent in PD which begin with a significative loss of GCs.
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Affiliation(s)
- Verónica M Sola
- Cátedra "B" de Química Biológica, Facultad de Odontología, Universidad Nacional de Córdoba, Córdoba, Argentina.,INICSA/UNC-CONICET, Enrique Barros esquina Enfermera Gordillo, Ciudad Universitaria, Córdoba, Argentina
| | - Juan J Aguilar
- Instituto Dr. José M.Vanella, Facultad de Ciencias Médicas, UNC, Córdoba, Argentina.,Cátedra "B" de Introducción a la Física y Química Biológica, Facultad de Odontología, UNC, Córdoba, Argentina
| | - Ana P Vazquez Mosquera
- INICSA/UNC-CONICET, Enrique Barros esquina Enfermera Gordillo, Ciudad Universitaria, Córdoba, Argentina.,Cátedra "B" de Introducción a la Física y Química Biológica, Facultad de Odontología, UNC, Córdoba, Argentina
| | - Agata R Carpentieri
- Cátedra "B" de Química Biológica, Facultad de Odontología, Universidad Nacional de Córdoba, Córdoba, Argentina.,INICSA/UNC-CONICET, Enrique Barros esquina Enfermera Gordillo, Ciudad Universitaria, Córdoba, Argentina
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6
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Nazar Majeed Z, Philip K, Alabsi AM, Pushparajan S, Swaminathan D. Identification of Gingival Crevicular Fluid Sampling, Analytical Methods, and Oral Biomarkers for the Diagnosis and Monitoring of Periodontal Diseases: A Systematic Review. DISEASE MARKERS 2016; 2016:1804727. [PMID: 28074077 PMCID: PMC5198140 DOI: 10.1155/2016/1804727] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Revised: 10/07/2016] [Accepted: 10/23/2016] [Indexed: 12/25/2022]
Abstract
Background. Several studies in the last decades have focused on finding a precise method for the diagnosis of periodontal disease in its early stages. Aim. To evaluate from current scientific literature the most common and precise method for gingival crevicular fluid (GCF) sample collection, biomarker analytical methods, and the variability of biomarker quantification, even when using the same analytical technique. Methodology. An electronic search was conducted on in vivo studies that presented clinical data on techniques used for GCF collection and biomarker analysis. Results. The results showed that 71.1%, 24.7%, and 4.1% of the studies used absorption, microcapillary, and washing techniques, respectively, in their gingival crevicular fluid collection. 73.1% of the researchers analyzed their samples by using enzyme-linked immunosorbent assay (ELISA). 22.6%, 19.5%, and 18.5% of the researchers included interleukin-1 beta (IL-1β), matrix metalloproteinase-8 (MMP-8), and tumor necrosis factor-alpha (TNF-α), respectively, in their studies as biomarkers for periodontal disease. Conclusion. IL-1β can be considered among the most common biomarkers that give precise results and can be used as an indicator of periodontal disease progression. Furthermore, paper strips are the most convenient and accurate method for gingival crevicular fluid collection, while enzyme-linked immunosorbent assay can be considered the most conventional method for the diagnosis of biofluids.
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Affiliation(s)
- Zeyad Nazar Majeed
- Department of Restorative Dentistry, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Periodontology, Faculty of Dentistry, University of Babylon, Babylon, Iraq
| | - Koshy Philip
- Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - A. M. Alabsi
- Department of Oral and Craniofacial Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Saravanan Pushparajan
- Department of Restorative Dentistry, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Dasan Swaminathan
- Department of Restorative Dentistry, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
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7
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Fico D, Pennetta A, De Benedetto GE. Bioanalytical Application of Amino Acid Detection by Capillary Electrophoresis. Methods Mol Biol 2016; 1483:249-276. [PMID: 27645741 DOI: 10.1007/978-1-4939-6403-1_14] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This chapter illustrates the usefulness of capillary electrophoresis (CE) for the analysis of amino acids, and both normal and chiral separations are covered. In order to provide a general description of the main results and challenges in the biomedical field, some relevant applications and reviews on CE of amino acids are tabulated. Furthermore, some detailed experimental procedures are shown, regarding the CE analysis of amino acids in body fluids, in microdialysate, and released upon hydrolysis of proteins. In particular, the protocols will deal with the following compounds: (1) underivatized aminoacids in blood; (2) γ-Aminobutyric acid, glutamate, and L-Aspartate derivatized with Naphthalene-2,3-dicarboxaldehyde; (3) hydrolysate from bovine serum albumine derivatized with phenylisothiocyanate. By examining these applications on real matrices, the capillary electrophoresis efficiency as tool for Amino Acid analysis can be ascertained.
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Affiliation(s)
- Daniela Fico
- Laboratorio di Spettrometria di Massa Analitica ed Isotopica, Dipartimento di Beni Culturali, Università degli Studi del Salento, Edificio M, Campus Ecotekne, S.P. Lecce-Monteroni, Lecce, 73100, Italy
| | - Antonio Pennetta
- Laboratorio di Spettrometria di Massa Analitica ed Isotopica, Dipartimento di Beni Culturali, Università degli Studi del Salento, Edificio M, Campus Ecotekne, S.P. Lecce-Monteroni, Lecce, 73100, Italy
| | - Giuseppe E De Benedetto
- Laboratorio di Spettrometria di Massa Analitica ed Isotopica, Dipartimento di Beni Culturali, Università degli Studi del Salento, Edificio M, Campus Ecotekne, S.P. Lecce-Monteroni, Lecce, 73100, Italy.
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8
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Casado PL, Aguiar DP, Costa LC, Fonseca MA, Vieira TCS, Alvim-Pereira CCK, Alvim-Pereira F, Deeley K, Granjeiro JM, Trevilatto PC, Vieira AR. Different contribution of BRINP3 gene in chronic periodontitis and peri-implantitis: a cross-sectional study. BMC Oral Health 2015; 15:33. [PMID: 25887438 PMCID: PMC4367924 DOI: 10.1186/s12903-015-0018-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Accepted: 02/20/2015] [Indexed: 01/21/2023] Open
Abstract
Background Peri-implantitis is a chronic inflammation, resulting in loss of supporting bone around implants. Chronic periodontitis is a risk indicator for implant failure. Both diseases have a common etiology regarding inflammatory destructive response. BRINP3 gene is associated with aggressive periodontitis. However, is still unclear if chronic periodontitis and peri-implantitis have the same genetic background. The aim of this work was to investigate the association between BRINP3 genetic variation (rs1342913 and rs1935881) and expression and susceptibility to both diseases. Methods Periodontal and peri-implant examinations were performed in 215 subjects, divided into: healthy (without chronic periodontitis and peri-implantitis, n = 93); diseased (with chronic periodontitis and peri-implantitis, n = 52); chronic periodontitis only (n = 36), and peri-implantitis only (n = 34). A replication sample of 92 subjects who lost implants and 185 subjects successfully treated with implants were tested. DNA was extracted from buccal cells. Two genetic markers of BRINP3 (rs1342913 and rs1935881) were genotyped using TaqMan chemistry. Chi-square (p < 0.05) compared genotype and allele frequency between groups. A subset of subjects (n = 31) had gingival biopsies harvested. The BRINP3 mRNA levels were studied by CT method (2ΔΔCT). Mann–Whitney test correlated the levels of BRINP3 in each group (p < 0.05). Results Statistically significant association between BRINP3 rs1342913 and peri-implantitis was found in both studied groups (p = 0.04). The levels of BRINP3 mRNA were significantly higher in diseased subjects compared to healthy individuals (p = 0.01). Conclusion This study provides evidence that the BRINP3 polymorphic variant rs1342913 and low level of BRINP3 expression are associated with peri-implantitis, independently from the presence of chronic periodontitis. Electronic supplementary material The online version of this article (doi:10.1186/s12903-015-0018-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Priscila L Casado
- Dental School, Clinical Research Unit and Biology Institute, Federal Fluminense University - UFF, Niterói, RJ, Brazil. .,Center of Clinical Research, Orthopedics and Traumatology National Institute - INTO, Rio de Janeiro, RJ, Brazil.
| | - Diego P Aguiar
- Center of Clinical Research, Orthopedics and Traumatology National Institute - INTO, Rio de Janeiro, RJ, Brazil.
| | - Lucas C Costa
- Department of Dentistry, Federal Fluminense University - UFF, Niterói, RJ, Brazil.
| | - Marcos A Fonseca
- Department of Dentistry, Federal Fluminense University - UFF, Niterói, RJ, Brazil.
| | - Thays C S Vieira
- Center of Clinical Research, Orthopedics and Traumatology National Institute - INTO, Rio de Janeiro, RJ, Brazil. .,Department of Biomedicine, Federal Fluminense University- UFF, Niterói, RJ, Brazil.
| | - Claudia C K Alvim-Pereira
- Department of Medicine, Health Sciences Center of Lagarto, Federal University of Sergipe (UFS), Lagarto, SE, Brazil.
| | - Fabiano Alvim-Pereira
- Department of Dentistry, Health Sciences Center of Lagarto, Federal University of Sergipe (UFS), Lagarto, SE, Brazil.
| | - Kathleen Deeley
- Department of Oral Biology, University of Pittsburgh, Pittsburgh, PA, USA.
| | - José M Granjeiro
- Dental School, Clinical Research Unit and Biology Institute, Federal Fluminense University - UFF, Niterói, RJ, Brazil. .,National Institute of Metrology (INMETRO), Niterói, RJ, Brazil.
| | - Paula C Trevilatto
- Center for Health and Biological Sciences, Pontifícia Universidade Católica do Paraná (PUCPR), Curitiba, Brazil.
| | - Alexandre R Vieira
- Department of Oral Biology, University of Pittsburgh, Pittsburgh, PA, USA. .,Department of Oral Biology, School of Dental Medicine, University of Pittsburgh, 3501 Terrace Street, Pittsburgh, PA, 15261, USA.
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9
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Casado PL, Pereira MC, Duarte MEL, Granjeiro JM. History of Chronic Periodontitis Is a High Risk Indicator for Peri-Implant Disease. Braz Dent J 2013; 24:136-41. [DOI: 10.1590/0103-6440201302006] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2012] [Accepted: 04/02/2013] [Indexed: 11/22/2022] Open
Abstract
The success rates in implant dentistry vary significantly among patients presenting previous history of periodontitis. The aim of this study was to evaluate if patients with history of chronic periodontitis (CP) are more susceptible to peri-implant disease (PID) than those without history of CP. Two hundred and fifteen individuals, under periodontal maintenance, presenting 754 osseointegrated implants, were selected for this study. The patients were divided into two groups according to the peri-implant status: Control group (patients without PID; n=129) and PID group (patients with PID; n=86). All peri-implant regions were clinically evaluated, including analyses of mucosa inflammation, edema and implant mobility. Periapical radiography assessed the presence of peri-implant bone loss. According to the clinical/radiographic characteristics, patients in Control and PID groups were diagnosed as having CP or not. Nominal variables were evaluated by the chi-square test. The distribution of numeric variables was analyzed by Shapiro-Wilk test. Student's t-test and Mann-Whitney test were used to analyze significant differences for parametric and non-parametric data. A p-value <0.05 was considered significant. There was a highly significant correlation between CP history and PID (p<0.0001). Patients with CP had 4 times more chance of developing PID than patients with healthy periodontal tissues. Also, CP patients showed higher bleeding on probing (p=0.002) and bone loss around implant (p=0.004) when compared with patients without CP. In conclusion, history of CP is a high risk factor for the development of PID, irrespective of gender or region of implant placement.
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Affiliation(s)
| | | | - Maria Eugenia Leite Duarte
- Center of Clinical Research - Orthopedics and Traumatology National Institute - INTO - Rio de Janeiro, Brazil
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10
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Cugini C, Stephens DN, Nguyen D, Kantarci A, Davey ME. Arginine deiminase inhibits Porphyromonas gingivalis surface attachment. MICROBIOLOGY-SGM 2012; 159:275-285. [PMID: 23242802 DOI: 10.1099/mic.0.062695-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The oral cavity is host to a complex microbial community whose maintenance depends on an array of cell-to-cell interactions and communication networks, with little known regarding the nature of the signals or mechanisms by which they are sensed and transmitted. Determining the signals that control attachment, biofilm development and outgrowth of oral pathogens is fundamental to understanding pathogenic biofilm development. We have previously identified a secreted arginine deiminase (ADI) produced by Streptococcus intermedius that inhibited biofilm development of the commensal pathogen Porphyromonas gingivalis through downregulation of genes encoding the major (fimA) and minor (mfa1) fimbriae, both of which are required for proper biofilm development. Here we report that this inhibitory effect is dependent on enzymic activity. We have successfully cloned, expressed and defined the conditions to ensure that ADI from S. intermedius is enzymically active. Along with the cloning of the wild-type allele, we have created a catalytic mutant (ADIC399S), in which the resulting protein is not able to catalyse the hydrolysis of l-arginine to l-citrulline. P. gingivalis is insensitive to the ADIC399S catalytic mutant, demonstrating that enzymic activity is required for the effects of ADI on biofilm formation. Biofilm formation is absent under l-arginine-deplete conditions, and can be recovered by the addition of the amino acid. Taken together, the results indicate that arginine is an important signal that directs biofilm formation by this anaerobe. Based on our findings, we postulate that ADI functions to reduce arginine levels and, by a yet to be identified mechanism, signals P. gingivalis to alter biofilm development. ADI release from the streptococcal cell and its cross-genera effects are important findings in understanding the nature of inter-bacterial signalling and biofilm-mediated diseases of the oral cavity.
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Affiliation(s)
- Carla Cugini
- Department of Oral Medicine Infection and Immunity, Harvard School of Dental Medicine, Boston, MA, USA.,Department of Molecular Genetics, The Forsyth Institute, Cambridge, MA, USA
| | | | - Daniel Nguyen
- Department of Periodontology, The Forsyth Institute, Cambridge, MA, USA
| | - Alpdogan Kantarci
- Department of Periodontology, The Forsyth Institute, Cambridge, MA, USA
| | - Mary E Davey
- Department of Oral Medicine Infection and Immunity, Harvard School of Dental Medicine, Boston, MA, USA.,Department of Molecular Genetics, The Forsyth Institute, Cambridge, MA, USA
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11
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Yamamoto H, Yokoyama M, Tamura H, Okumura S, Kawada E, Kuboyama N. Studies on the Effects of Protamine-Reduced Peptide on Experimental Periodontitis Analyzed by Micro-Computerized Tomography. J HARD TISSUE BIOL 2012. [DOI: 10.2485/jhtb.21.51] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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12
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Julio-Pieper M, Flor PJ, Dinan TG, Cryan JF. Exciting times beyond the brain: metabotropic glutamate receptors in peripheral and non-neural tissues. Pharmacol Rev 2011; 63:35-58. [PMID: 21228260 DOI: 10.1124/pr.110.004036] [Citation(s) in RCA: 139] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Metabotropic glutamate (mGlu) receptors are G-protein-coupled receptors expressed primarily on neurons and glial cells, where they are located in the proximity of the synaptic cleft. In the central nervous system (CNS), mGlu receptors modulate the effects of l-glutamate neurotransmission in addition to that of a variety of other neurotransmitters. However, mGlu receptors also have a widespread distribution outside the CNS that has been somewhat neglected to date. Based on this expression, diverse roles of mGlu receptors have been suggested in a variety of processes in health and disease including controlling hormone production in the adrenal gland and pancreas, regulating mineralization in the developing cartilage, modulating lymphocyte cytokine production, directing the state of differentiation in embryonic stem cells, and modulating gastrointestinal secretory function. Understanding the role of mGlu receptors in the periphery will also provide a better insight into potential side effects of drugs currently being developed for neurological and psychiatric conditions. This review summarizes the new potential roles of mGlu receptors and raises the possibility of novel pharmacological targets for various disorders.
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Affiliation(s)
- Marcela Julio-Pieper
- Laboratory of Neurogastroenterology, Alimentary Pharmabiotic Centre, University College Cork, Cork, Ireland
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Poinsot VÃ, Gavard P, Feurer B, Couderc F. Recent advances in amino acid analysis by CE. Electrophoresis 2010; 31:105-21. [DOI: 10.1002/elps.200900399] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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