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Karrar RN, Cushley S, Duncan HF, Lundy FT, Abushouk SA, Clarke M, El-Karim IA. Molecular biomarkers for objective assessment of symptomatic pulpitis: A systematic review and meta-analysis. Int Endod J 2023; 56:1160-1177. [PMID: 37392154 DOI: 10.1111/iej.13950] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 05/23/2023] [Accepted: 06/22/2023] [Indexed: 07/03/2023]
Abstract
BACKGROUND Inflammatory biomarkers are potentially useful targets for pulpal diagnostic tests that can identify pulp status and predict vital pulp treatment (VPT) outcome, however, their accuracy is unknown. OBJECTIVES (1) Calculate sensitivity, specificity and diagnostic odds ratio (DOR) of previously investigated pulpitic biomarkers; (2) Determine if biomarker levels discriminate between clinical diagnoses of pulpitis based on the presence or absence of spontaneous pain (3) Evaluate if biomarker level can predict VPT outcome. METHODS Searches: PubMed/MEDLINE, Ovid SP, Cochrane Central Register of Controlled Trials (CENTRAL), International Clinical Trials Registry Platform (ICTRP), ClinicalTrials.gov, Embase, Web of Science and Scopus in May 2023. INCLUSION prospective and retrospective observational studies and randomized trials. Participants were humans with vital permanent teeth and a well-defined pulpal diagnosis. EXCLUSION deciduous teeth, in vitro and animal studies. Risk of bias was assessed with modified-Downs and Black quality assessment checklist. Meta-analysis was performed using bivariate random effect model in Meta-DiSc 2.0 and RevMan and the quality of the evidence was assessed using Grading of Recommendations Assessment, Development and Evaluation. RESULTS Fifty-six studies were selected, reporting >70 individual biomolecules investigating pulpal health and disease at the gene and protein level. Most studies were of low and fair quality. Among the biomolecules investigated, IL-8 and IL-6 demonstrated a level of diagnostic accuracy with high sensitivity, specificity and DOR to discriminate between healthy pulps and those exhibiting spontaneous pain suggestive of IRP (low-certainty evidence). However, none was shown to have high DOR and the ability to discriminate between pulpitic states (very low certainty evidence). Limited data suggests high levels of matrix metalloproteinase 9 correlate with poorer outcomes of full pulpotomy. DISCUSSION The inability of identified molecular inflammatory markers to discriminate between dental pulps with spontaneous and non-spontaneous pain should shift the focus to improved study quality or the pursuit of other molecules potentially associated with healing and repair. CONCLUSIONS Low-quality evidence suggests IL-8 and IL-6 demonstrated level of diagnostic accuracy to discriminate between healthy pulps and those exhibiting spontaneous pain. There is a need for standardized biomarker diagnostic and prognostic studies focusing on solutions that can accurately determine the degree of pulp inflammation. REGISTRATION PROSPERO CRD42021259305.
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Affiliation(s)
- Riham N Karrar
- Faculty of Dentistry, University of Khartoum, Khartoum, Sudan
| | - Siobhan Cushley
- School of Medicine Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, UK
| | - Henry F Duncan
- Division of Restorative Dentistry & Periodontology, Dublin Dental University Hospital, Trinity College Dublin, University of Dublin, Dublin, Ireland
| | - Fionnuala T Lundy
- School of Medicine Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, UK
| | | | - Mike Clarke
- School of Medicine Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, UK
| | - Ikhlas A El-Karim
- School of Medicine Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, UK
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Trtić N, Mori M, Matsui S, Nakamura N, Fukamachi H, Kurosawa M, Morisaki H, Maruoka Y, Mayers M, Okahashi N, Kuwata H, Itsumi M. Oral commensal bacterial flora is responsible for peripheral differentiation of neutrophils in the oral mucosa in the steady state. J Oral Biosci 2023; 65:119-125. [PMID: 36464149 DOI: 10.1016/j.job.2022.11.002] [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: 08/03/2022] [Revised: 11/24/2022] [Accepted: 11/25/2022] [Indexed: 12/05/2022]
Abstract
OBJECTIVES Commensal bacteria in the host body play a fundamental role in the differentiation and maintenance of the immune system. Studies on intestinal immunity have revealed that, under steady-state conditions, microflora have an important role in the maintenance of health. However, the role of oral commensal bacteria on the oral immune system is still unclear. Here, we clarify the interactions between commensal bacteria and the oral mucosal immune system under steady-state conditions. METHODS We used germ-free mice that had never been exposed to bacteria and conventional mice grown with normal bacterial flora. Oral cells were isolated from the oral mucosa, stained with specific antibodies, and analyzed by flow cytometry. For the detection of myeloperoxidase and intracellular cytokines, oral cells were stimulated with N-formyl-methionine-leucyl-phenylalanine and phorbol 12-myristate 13-acetate/ionomycin, respectively. RESULTS We found that the oral mucosa harbored more neutrophils in germ-free mice than in conventional mice. However, the majority of neutrophils in the germ-free oral mucosa exhibited an immature phenotype. Other immune cells, including macrophages, T cells, and B cells, in the oral mucosa of germ-free mice showed similar differentiation to those in conventional mice. These results indicate that in the steady-state oral mucosa, the normal commensal flora promote the peripheral differentiation of neutrophils. CONCLUSIONS The presence of commensal flora is critical for the development of adequate immune system in the oral mucosa.
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Affiliation(s)
- Nataša Trtić
- Department of Oral Microbiology and Immunology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan; Department of Periodontology and Oral Medicine, Faculty of Medicine, University of Banja Luka, Bulevar Vojvode Petra Bojovica 2, Banja Luka, 78000, Bosnia and Herzegovina
| | - Mina Mori
- Department of Oral Microbiology and Immunology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan; Department of Special Needs Dentistry, Division of Medical and Dental Cooperative Dentistry, Showa University, 2-1-1 Kitasenzoku, Ohta-ku, Tokyo, 145-8515, Japan
| | - Shohei Matsui
- Department of Oral Microbiology and Immunology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan; Department of Special Needs Dentistry, Division of Medical and Dental Cooperative Dentistry, Showa University, 2-1-1 Kitasenzoku, Ohta-ku, Tokyo, 145-8515, Japan
| | - Natsuno Nakamura
- Department of Oral Microbiology and Immunology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan; Department of Special Needs Dentistry, Division of Dentistry for Persons with Disabilities, School of Dentistry, Showa University, 2-1-1 Kitasenzoku, Ohta-ku, Tokyo, 145-8515, Japan
| | - Haruka Fukamachi
- Department of Oral Microbiology and Immunology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan
| | - Mie Kurosawa
- Department of Oral Microbiology and Immunology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan
| | - Hirobumi Morisaki
- Department of Oral Microbiology and Immunology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan
| | - Yasubumi Maruoka
- Department of Special Needs Dentistry, Division of Medical and Dental Cooperative Dentistry, Showa University, 2-1-1 Kitasenzoku, Ohta-ku, Tokyo, 145-8515, Japan
| | - Mie Mayers
- Department of Special Needs Dentistry, Division of Medical and Dental Cooperative Dentistry, Showa University, 2-1-1 Kitasenzoku, Ohta-ku, Tokyo, 145-8515, Japan
| | - Nobuo Okahashi
- Center for Frontier Oral Science, Osaka University Graduate School of Dentistry, 1-8 Yamada-Oka, Suita, Osaka, 565-0871, Japan
| | - Hirotaka Kuwata
- Department of Oral Microbiology and Immunology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan
| | - Momoe Itsumi
- Department of Oral Microbiology and Immunology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan.
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SONG T, Xiangfen LI, Liu LIU, ZENG Y, SONG D, HUANG D. The effect of BMP9 on inflammation in the early stage of pulpitis. J Appl Oral Sci 2023; 31:e20220313. [PMID: 36700591 PMCID: PMC9882962 DOI: 10.1590/1678-7757-2022-0313] [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: 08/14/2022] [Accepted: 11/16/2022] [Indexed: 01/27/2023] Open
Abstract
BACKGROUND Bone morphogenetic protein 9 (BMP9) tends to be associated with various inflammatory responses of diseases, but its relationship with pulpitis remains unknown. OBJECTIVE This study aimed to evaluate the effects and mechanisms of BMP9 in pulpitis. METHODOLOGY A rat model of pulpitis was used to evaluate the expression of BMP9, which was also analysed in Porphyromonas gingivalis lipopolysaccharide (Pg-LPS)-stimulated human dental pulp cells (hDPCs). The effects and mechanism of BMP9 on the regulation of inflammatory factors and matrix metalloproteinase-2 (MMP2) were evaluated using real-time quantitative PCR, western blotting, and immunocytofluorescence. Moreover, the migration ability of THP-1 monocyte-macrophages, treated with inflammatory supernate inhibited by BMP9, was previously tested by a transwell migration assay. Finally, a direct rat pulp capping model was used to evaluate in vivo the influence of the overexpression of BMP9 in pulpitis. RESULTS The expression of BMP9 decreased after 24 h and increased after 3 and 7 d in rat pulpitis and inflammatory hDPCs. The overexpression of BMP9 inhibited the gene expression of inflammatory factors (IL-6, IL-8, and CCL2) and the secretion of IL-6 and MMP2 in Pg-LPS-stimulated hDPCs. The level of phosphorylated Smad1/5 was upregulated and the levels of phosphorylated ERK and JNK were downregulated. The inflammatory supernate of hDPCs inhibited by BMP9 reduced the migration of THP-1 cells. In rat pulp capping models, overexpressed BMP9 could partially restrain the development of dental pulp inflammation. CONCLUSION This is the first study to confirm that BMP9 is involved in the occurrence and development of pulpitis and can partially inhibit its severity in the early stage. These findings provided a theoretical reference for future studies on the mechanism of pulpitis and application of bioactive molecules in vital pulp therapy.
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Affiliation(s)
- Tianzhu SONG
- Sichuan UniversityWest China Hospital of StomatologyState Key Laboratory of Oral DiseasesChengduChinaSichuan University, West China Hospital of Stomatology, State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Chengdu, China.,Northwest Minzu UniversityKey Laboratory of Stomatology of State Ethnic Affairs CommissionKey Laboratory of Oral Diseases of Gansu ProvinceLanzhouGansuChinaNorthwest Minzu University, Key Laboratory of Stomatology of State Ethnic Affairs Commission, Key Laboratory of Oral Diseases of Gansu Province, Lanzhou, Gansu, China.
| | - LI Xiangfen
- Sichuan UniversityWest China Hospital of StomatologyState Key Laboratory of Oral DiseasesChengduChinaSichuan University, West China Hospital of Stomatology, State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Chengdu, China.,Sichuan UniversityWest China Hospital of StomatologyJinjiang District Out Patient SectionChengduChinaSichuan University, West China Hospital of Stomatology, Jinjiang District Out Patient Section, Chengdu, China.
| | - LIU Liu
- Sichuan UniversityWest China Hospital of StomatologyState Key Laboratory of Oral DiseasesChengduChinaSichuan University, West China Hospital of Stomatology, State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Chengdu, China.
| | - Yanglin ZENG
- Sichuan UniversityWest China Hospital of StomatologyState Key Laboratory of Oral DiseasesChengduChinaSichuan University, West China Hospital of Stomatology, State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Chengdu, China.
| | - Dongzhe SONG
- Sichuan UniversityWest China Hospital of StomatologyState Key Laboratory of Oral DiseasesChengduChinaSichuan University, West China Hospital of Stomatology, State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Chengdu, China.,Sichuan UniversityWest China Hospital of StomatologyDepartment of Conservative Dentistry and EndodonticsChengduChinaSichuan University, West China Hospital of Stomatology, Department of Conservative Dentistry and Endodontics, Chengdu, China.
| | - Dingming HUANG
- Sichuan UniversityWest China Hospital of StomatologyState Key Laboratory of Oral DiseasesChengduChinaSichuan University, West China Hospital of Stomatology, State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Chengdu, China.,Sichuan UniversityWest China Hospital of StomatologyDepartment of Conservative Dentistry and EndodonticsChengduChinaSichuan University, West China Hospital of Stomatology, Department of Conservative Dentistry and Endodontics, Chengdu, China.
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Guo X, Sun Y, Wang Z, Ren B, Xu HHK, Peng X, Li M, Wang S, Wang H, Wu Y, Weir MD, Zhou X, Lan F, Cheng L. The Preventive Effect of A Magnetic Nanoparticle-Modified Root Canal Sealer on Persistent Apical Periodontitis. Int J Mol Sci 2022; 23:13137. [PMID: 36361925 PMCID: PMC9655100 DOI: 10.3390/ijms232113137] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/18/2022] [Accepted: 10/26/2022] [Indexed: 08/23/2023] Open
Abstract
Persistent apical periodontitis is a critical challenge for endodontists. Developing root canal filling materials with continuous antibacterial effects and tightly sealed root canals are essential strategies to avoid the failure of root canal therapy and prevent persistent apical periodontitis. We modified the EndoREZ root canal sealer with the antibacterial material dimethylaminododecyl methacrylate (DMADDM) and magnetic nanoparticles (MNPs). The mechanical properties of the modified root canal sealer were tested. The biocompatibility of this sealer was verified in vitro and in vivo. Multispecies biofilms were constructed to assess the antibacterial effects of the modified root canal sealer. We applied magnetic fields and examined the extent of root canal sealer penetration in vitro and in vivo. The results showed that EndoREZ sealer containing 2.5% DMADDM and 1% MNP had biological safety and apical sealing ability. In addition, the modified sealer could increase the sealer penetration range and exert significant antibacterial effects on multispecies biofilms under an external magnetic field. According to the in vivo study, the apices of the root canals with the sealer containing 2.5% DMADDM and 1% MNP showed no significant resorption and exhibited only a slight increase in the periodontal ligament space, with a good inhibitory effect on persistent apical periodontitis.
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Affiliation(s)
- Xiao Guo
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Yan Sun
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Zheng Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Biao Ren
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Hockin H. K. Xu
- Department of Advanced Oral Sciences and Therapeutics, School of Dentistry, University of Maryland, Baltimore, MD 21201, USA
| | - Xian Peng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Mingyun Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Suping Wang
- Stomatology Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Haohao Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Yao Wu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Michael D. Weir
- Department of Advanced Oral Sciences and Therapeutics, School of Dentistry, University of Maryland, Baltimore, MD 21201, USA
| | - Xuedong Zhou
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Fang Lan
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Lei Cheng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
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5
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Yu F, Huo F, Li F, Zuo Y, Wang C, Ye L. Aberrant NF-κB activation in odontoblasts orchestrates inflammatory matrix degradation and mineral resorption. Int J Oral Sci 2022; 14:6. [PMID: 35082271 PMCID: PMC8791990 DOI: 10.1038/s41368-022-00159-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 12/30/2021] [Accepted: 12/31/2021] [Indexed: 02/05/2023] Open
Abstract
Inflammation-associated proteinase functions are key determinants of inflammatory stromal tissues deconstruction. As a specialized inflammatory pathological process, dental internal resorption (IR) includes both soft and hard tissues deconstruction within the dentin-pulp complex, which has been one of the main reasons for inflammatory tooth loss. Mechanisms of inflammatory matrix degradation and tissue resorption in IR are largely unclear. In this study, we used a combination of Cre-loxP reporter, flow cytometry, cell transplantation, and enzyme activities assay to mechanistically investigate the role of regenerative cells, odontoblasts (ODs), in inflammatory mineral resorption and matrices degradation. We report that inflamed ODs have strong capabilities of matrix degradation and tissue resorption. Traditionally, ODs are regarded as hard-tissue regenerative cells; however, our data unexpectedly present ODs as a crucial population that participates in IR-associated tissue deconstruction. Specifically, we uncovered that nuclear factor-kappa b (NF-κB) signaling orchestrated Tumor necrosis factor α (TNF-α)-induced matrix metalloproteinases (Mmps) and Cathepsin K (Ctsk) functions in ODs to enhance matrix degradation and tissue resorption. Furthermore, TNF-α increases Rankl/Opg ratio in ODs via NF-κB signaling by impairing Opg expression but increasing Rankl level, which utterly makes ODs cell line 17IIA11 (A11) become Trap+ and Ctsk+ multinucleated cells to perform resorptive actions. Blocking of NF-κB signaling significantly rescues matrix degradation and resorptive functions of inflamed ODs via repressing vital inflammatory proteinases Mmps and Ctsk. Utterly, via utilizing NF-κB specific small molecule inhibitors we satisfactorily attenuated inflammatory ODs-associated human dental IR in vivo. Our data reveal the underlying mechanisms of inflammatory matrix degradation and resorption via proteinase activities in IR-related pathological conditions.
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Affiliation(s)
- Fanyuan Yu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Endodontics, West China Stomatology Hospital, Sichuan University, Chengdu, China
| | - Fengli Huo
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Endodontics, West China Stomatology Hospital, Sichuan University, Chengdu, China
| | - Feifei Li
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yanqin Zuo
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Endodontics, West China Stomatology Hospital, Sichuan University, Chengdu, China
| | - Chenglin Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Endodontics, West China Stomatology Hospital, Sichuan University, Chengdu, China
| | - Ling Ye
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China. .,Department of Endodontics, West China Stomatology Hospital, Sichuan University, Chengdu, China.
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Kaur B, Kobayashi Y, Cugini C, Shimizu E. A Mini Review: The Potential Biomarkers for Non-invasive Diagnosis of Pulpal Inflammation. FRONTIERS IN DENTAL MEDICINE 2021. [DOI: 10.3389/fdmed.2021.718445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
For assessing the adequacy of vital pulp therapy for an inflamed pulp, the use of non-invasive diagnostic tools is necessary to avoid further damage to the teeth. Detection of biomarkers that are indicative of the inflammatory status in pulp can be a promising tool for this purpose. These biomarkers need to be reliably correlated with pulpal inflammation and to be easily detected without pulp exposure. This mini-review article aims to review biomarkers that are present in gingival crevicular fluid (GCF) in inflamed pulp conditions. Several studies have reported the availability of various biomarkers including cytokines, proteases, elastase, neuropeptides, and growth factors. Non-invasive pulpal diagnostic methods will be useful as well to determine reversibility, irreversibility, or necrosis of inflamed pulp. These types of molecular diagnoses via analyzing the proteome have revolutionized the medical field, and are one of the most promising empirical methodologies that a clinician can utilize for the proactive identification of pulpal disease.
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Feridouni Khamaneh Y, Kiani P, Miller RJD, Schlüter H, Friedrich RE. Complementing the pulp proteome via sampling with a picosecond infrared laser (PIRL). Clin Oral Investig 2021; 25:6757-6768. [PMID: 33977388 PMCID: PMC8602158 DOI: 10.1007/s00784-021-03962-0] [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: 12/09/2020] [Accepted: 04/20/2021] [Indexed: 11/27/2022]
Abstract
OBJECTIVES The aim of this investigation was the detailed analysis of the human pulp proteome using the new picosecond infrared laser (PIRL)-based sampling technique, which is based on a completely different mechanism compared to mechanical sampling. Proteome analysis of healthy pulp can provide data to define changes in the proteome associated with dental disease. MATERIAL AND METHODS Immediately after extraction of the entire, undamaged tooth, 15 wisdom teeth were deep frozen in liquid nitrogen and preserved at -80°C. Teeth were crushed, and the excised frozen pulps were conditioned for further analysis. The pulps were sampled using PIRL, and the aspirates digested with trypsin and analyzed with mass spectrometry. Pulp proteins were categorized according to their gene ontology terminus. Proteins identified exclusively in this study were searched in the Human Protein Atlas (HPA) for gaining information about the main known localization and function. RESULTS A total of 1348 proteins were identified in this study. The comparison with prior studies showed a match of 72%. Twenty-eight percent of the proteins were identified exclusively in this study. Considering HPA, almost half of these proteins were assigned to tissues that could be pulp specific. CONCLUSION PIRL is releasing proteins from the dental pulp which are not dissolved by conventional sampling techniques. Clinical Relevance The presented data extend current knowledge on dental pulp proteomics in healthy teeth and can serve as a reference for studies on pulp proteomics in dental disease.
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Affiliation(s)
- Yaghoup Feridouni Khamaneh
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, University of Hamburg, Hamburg, Germany.
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Hamburg-Eppendorf, University of Hamburg, Hamburg, Germany.
- Department of Periodontics, Preventive and Restorative Dentistry, University Medical Center Hamburg-Eppendorf, University of Hamburg, Hamburg, Germany.
- DMD, Dental Clinic Zahnvitalis, Julius-Vosseler-Str. 42, D-22527, Hamburg, Germany.
| | - Parnian Kiani
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Hamburg-Eppendorf, University of Hamburg, Hamburg, Germany
- Department of Chemistry, Lash Miller Chemical Laboratories, University of Toronto, 80 St. George Street, Toronto, ON, M5S 3H6, Canada
| | - R J Dwayne Miller
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Hamburg-Eppendorf, University of Hamburg, Hamburg, Germany
- Department of Chemistry, Lash Miller Chemical Laboratories, University of Toronto, 80 St. George Street, Toronto, ON, M5S 3H6, Canada
| | - Hartmut Schlüter
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Hamburg-Eppendorf, University of Hamburg, Hamburg, Germany
| | - Reinhard E Friedrich
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, University of Hamburg, Hamburg, Germany
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Wan CY, Li L, Liu LS, Jiang CM, Zhang HZ, Wang JX. Expression of Matrix Metalloproteinases and Tissue Inhibitor of Matrix Metalloproteinases during Apical Periodontitis Development. J Endod 2021; 47:1118-1125. [DOI: 10.1016/j.joen.2021.04.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 04/03/2021] [Accepted: 04/05/2021] [Indexed: 12/11/2022]
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Myeloperoxidase Inhibition Decreases the Expression of Collagen and Metallopeptidase in Mare Endometria under In Vitro Conditions. Animals (Basel) 2021; 11:ani11010208. [PMID: 33467081 PMCID: PMC7830995 DOI: 10.3390/ani11010208] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 12/21/2020] [Accepted: 01/14/2021] [Indexed: 12/19/2022] Open
Abstract
Neutrophils can originate neutrophil extracellular traps (NETs). Myeloperoxidase (MPO) is a peroxidase found in NETs associated to equine endometrosis and can be inhibited by 4-aminobenzoic acid hydrazide (ABAH). Metallopeptidases (MMPs) participate in extracellular matrix stability and fibrosis development. The objectives of this in vitro work were to investigate, in explants of mare's endometrium, (i) the ABAH capacity to inhibit MPO-induced collagen type I (COL1) expression; and (ii) the action of MPO and ABAH on the expression and gelatinolytic activity of MMP-2/-9. Explants retrieved from the endometrium of mares in follicular or mid-luteal phases were treated with MPO, ABAH, or their combination, for 24 or 48 h. The qPCR analysis measured the transcription of COL1A2, MMP2, and MMP9. Western blot and zymography were performed to evaluate COL1 protein relative abundance and gelatinolytic activity of MMP-2/-9, respectively. Myeloperoxidase elevated COL1 relative protein abundance at both treatment times in follicular phase (p < 0.05). The capacity of ABAH to inhibit MPO-induced COL1 was detected in follicular phase at 48 h (p < 0.05). The gelatinolytic activity of activated MMP-2 augmented in mid-luteal phase at 24 h after MPO treatment, but it was reduced with MPO+ABAH treatment. The activity of MMP-9 active form augmented in MPO-treated explants. However, this effect was inhibited by ABAH in the follicular phase at 48 h (p < 0.05). By inhibiting the pro-fibrotic effects of MPO, it might be possible to reduce the development of endometrosis. Metallopeptidase-2 might be involved in an acute response to MPO in the mid-luteal phase, while MMP-9 might be implicated in a prolonged exposition to MPO in the follicular phase.
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Cunha NNDO, Junqueira MA, Cosme-Silva L, Santos LDST, Oliveira GAVD, Moretti Neto RT, Nogueira DA, Brigagão MRPL, Moretti ABDS. Expression of Matrix Metalloproteinases-8 and Myeloperoxidase in Pulp Tissue after Pulpotomy with Calcium Silicate Cements. PESQUISA BRASILEIRA EM ODONTOPEDIATRIA E CLÍNICA INTEGRADA 2021. [DOI: 10.1590/pboci.2021.038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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Chen M, Zeng J, Yang Y, Wu B. Diagnostic biomarker candidates for pulpitis revealed by bioinformatics analysis of merged microarray gene expression datasets. BMC Oral Health 2020; 20:279. [PMID: 33046027 PMCID: PMC7552454 DOI: 10.1186/s12903-020-01266-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 09/29/2020] [Indexed: 12/11/2022] Open
Abstract
Background Pulpitis is an inflammatory disease, the grade of which is classified according to the level of inflammation. Traditional methods of evaluating the status of dental pulp tissue in clinical practice have limitations. The rapid and accurate diagnosis of pulpitis is essential for determining the appropriate treatment. By integrating different datasets from the Gene Expression Omnibus (GEO) database, we analysed a merged expression matrix of pulpitis, aiming to identify biological pathways and diagnostic biomarkers of pulpitis. Methods By integrating two datasets (GSE77459 and GSE92681) in the GEO database using the sva and limma packages of R, differentially expressed genes (DEGs) of pulpitis were identified. Then, the DEGs were analysed to identify biological pathways of dental pulp inflammation with Gene Ontology (GO) analysis, Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis and Gene Set Enrichment Analysis (GSEA). Protein–protein interaction (PPI) networks and modules were constructed to identify hub genes with the Search Tool for the Retrieval of Interacting Genes/Proteins (STRING) and Cytoscape. Results A total of 470 DEGs comprising 394 upregulated and 76 downregulated genes were found in pulpitis tissue. GO analysis revealed that the DEGs were enriched in biological processes related to inflammation, and the enriched pathways in the KEGG pathway analysis were cytokine-cytokine receptor interaction, chemokine signalling pathway and NF-κB signalling pathway. The GSEA results provided further functional annotations, including complement system, IL6/JAK/STAT3 signalling pathway and inflammatory response pathways. According to the degrees of nodes in the PPI network, 10 hub genes were identified, and 8 diagnostic biomarker candidates were screened: PTPRC, CD86, CCL2, IL6, TLR8, MMP9, CXCL8 and ICAM1. Conclusions With bioinformatics analysis of merged datasets, biomarker candidates of pulpitis were screened and the findings may be as reference to develop a new method of pulpitis diagnosis.
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Affiliation(s)
- Ming Chen
- Stomatological Hospital, Southern Medical University, Guangzhou, China.,School of Stomatology, Southern Medical University, Guangzhou, China
| | - Junkai Zeng
- School of Stomatology, Southern Medical University, Guangzhou, China.,Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yeqing Yang
- Stomatological Hospital, Southern Medical University, Guangzhou, China.,School of Stomatology, Southern Medical University, Guangzhou, China
| | - Buling Wu
- School of Stomatology, Southern Medical University, Guangzhou, China. .,Shenzhen Stomatology Hospital (Pingshan), Southern Medical University, Shenzhen, Guangdong, 510515, P.R. China.
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12
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Han G, Liu W, Jiang H, Yu D, Hu M. Extreme intrusive force affects the expression of c-Fos and matrix metallopeptidase 9 in human dental pulp tissues. Medicine (Baltimore) 2020; 99:e19394. [PMID: 32118792 PMCID: PMC7478638 DOI: 10.1097/md.0000000000019394] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
This study aimed to investigate the expression of c-Fos and matrix metallopeptidase 9 (MMP-9) in dental pulp of patients receiving orthodontic treatment via wire appliance.Fifteen patients (30 teeth in total) were randomly assigned to five groups: t = 0, t = 1, t = 4, t = 8 and t = 12 (n = 6). The first maxillary premolars of patients in the t = 0 group were extracted without any orthodontic treatment. An intrusive force of 300 g was applied on first maxillary premolars in the other four groups via wire appliances. This force was maintained for 1 week for t = 1 group, 4 weeks for t = 4 group, 8 weeks for t = 8 group, or 12 weeks for t = 12 group, before the teeth were extracted.The expression of c-Fos and MMP-9 in the pulps of each group was analyzed by immunohistochemical staining and real-time PCR. The relationship in the protein expression between c-Fos and MMP-9 in the dental pulp was analyzed by Pearson correlation analysis.Intrusive force of 300 g increased the expression of both c-Fos and MMP-9 in the dental pulp. The protein expression of MMP-9 in the dental pulp was significantly correlated with the expression of c-Fos (P < .001).Extreme intrusive force upregulates c-Fos and MMP-9 expression in the dental pulp. Moreover, protein expression of c-Fos and MMP-9 is significantly correlated under intrusive force.
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Affiliation(s)
- Guanghong Han
- Department of Oral Geriatrics, Hospital of Stomatology, Jilin University, Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun, PR China
| | - Weiwei Liu
- Department of Oral and Maxillofacial Surgery
| | - Huan Jiang
- Department of Orthodontics, Hospital of Stomatology, Jilin University
| | - Dongsheng Yu
- Department of Orthodontics, Hospital of Stomatology, Jilin University
| | - Min Hu
- Department of Orthodontics, Hospital of Stomatology, Jilin University
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun, PR China
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13
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Zhang H, Liu L, Jiang C, Pan K, Deng J, Wan C. MMP9 protects against LPS-induced inflammation in osteoblasts. Innate Immun 2019; 26:259-269. [PMID: 31726909 PMCID: PMC7251795 DOI: 10.1177/1753425919887236] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The matrix metalloproteinase (MMP) family is widely involved in the destruction
of the pulp and apical tissues in the inflammatory process. MMP9 is closely
related to oral inflammation. Nevertheless, the specific function of MMP9 during
oral inflammation, as well as its mechanism, is not well understood. Our
previous studies found that in experimentally induced apical periodontitis, more
severe inflammation occurred in MMP9 knockout mice compared with the wild type
mice. Moreover, the pathology phenomenon of alveolar bone destruction was even
more evident in MMP9 knockout mice compared with the wild type mice. We proposed
that MMP9 has “anti-inflammatory” properties. We aimed to study the effects of
MMP9 on inflammatory response as well as on bone formation and bone destruction.
We found a specific relationship between MMP9 and inflammation. qRT-PCR and
Western blot revealed that the production of IL-1β, TNF-α, RANK, RANKL, TLR2,
and TLR4 was reduced by MMP9 in LPS-stimulated MC3T3-E1 cells. Meanwhile, the
expressions of OPG and OCN were increased by MMP9 in LPS-stimulated cells. MMP9
plays a protective role in LPS-induced inflammation, thereby providing new clues
to the prevention and treatment of apical periodontitis.
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Affiliation(s)
- Hongzhe Zhang
- Department of Endodontics, The Affiliated Hospital and School of Stomatology of Qingdao University, China
| | - Lingshuang Liu
- Department of Endodontics, The Affiliated Hospital and School of Stomatology of Qingdao University, China
| | - Chunmiao Jiang
- Department of Orthodontics, The Affiliated Hospital and School of Stomatology of Qingdao University, China
| | - Keqing Pan
- Department of Endodontics, The Affiliated Hospital and School of Stomatology of Qingdao University, China
| | - Jing Deng
- Department of Endodontics, The Affiliated Hospital and School of Stomatology of Qingdao University, China
| | - Chunyan Wan
- Department of Endodontics, The Affiliated Hospital and School of Stomatology of Qingdao University, China
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14
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Brodzikowska A, Gondek A, Rak B, Paskal W, Pełka K, Cudnoch-Jędrzejewska A, Włodarski P. Metalloproteinase 14 (MMP-14) and hsa-miR-410-3p expression in human inflamed dental pulp and odontoblasts. Histochem Cell Biol 2019; 152:345-353. [PMID: 31486923 PMCID: PMC6842353 DOI: 10.1007/s00418-019-01811-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/28/2019] [Indexed: 11/30/2022]
Abstract
The objective of this study is to evaluate MMP-14 expression in odontoblasts and in the bulk of dental pulp of teeth with pulpitis; to determine the expression of microRNA-410 (miR-410) in pulp tissue, since sequence analysis suggests that miR-410 has potential binding site on MMP-14’s 3′UTR, and hence, can regulate expression of the latter one. Tissue samples of dental pulp from teeth with pulpitis and healthy (control) were formalin fixed and paraffin embedded (FFPE). Samples were examined using immunohistochemical staining for MMP-14 and the expression of miR-410 was evaluated using qRT-PCR. In both, healthy and inflamed pulp odontoblasts stained more intensively than remaining pulp tissue, but this difference was not statistically significant. More positive staining was observed in inflamed pulps compared to healthy pulps. Expression of miR-410 was found significantly lower in inflamed pulps than in healthy ones. In the two examined zones, odontoblasts and remaining pulp, miR-410 was expressed on a similar level. No statistically significant correlation of miR-410 and MMP-14 expression was found. We showed that inflammation changes the MMP-14 expression in pulp tissue and odontoblasts. This study demonstrates for the first time miR-410 expression in human dental pulp and that expression of this microRNA was downregulated in inflamed dental pulp and odontoblasts.
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Affiliation(s)
- Aniela Brodzikowska
- The Department of Conservative Dentistry, Medical University of Warsaw, Miodowa 18, 00-246, Warsaw, Poland.
| | - Agata Gondek
- Laboratory of Centre for Preclinical Research, Department of Methodology, Medical University of Warsaw, Banacha 1b, 02-097, Warsaw, Poland
| | - Beata Rak
- Laboratory of Centre for Preclinical Research, Department of Methodology, Medical University of Warsaw, Banacha 1b, 02-097, Warsaw, Poland.,Postgraduate School of Molecular Medicine, Medical University of Warsaw, Warsaw, Poland.,Department of Internal Medicine and Endocrinology, Medical University of Warsaw, Banacha 1a, Warsaw, Poland
| | - Wiktor Paskal
- Laboratory of Centre for Preclinical Research, Department of Methodology, Medical University of Warsaw, Banacha 1b, 02-097, Warsaw, Poland
| | - Kacper Pełka
- Laboratory of Centre for Preclinical Research, Department of Methodology, Medical University of Warsaw, Banacha 1b, 02-097, Warsaw, Poland
| | - Agnieszka Cudnoch-Jędrzejewska
- Laboratory of Centre for Preclinical Research, Department of Experimental and Clinical Physiology, Medical University of Warsaw, Banacha 1b, 02-097, Warsaw, Poland
| | - Paweł Włodarski
- Laboratory of Centre for Preclinical Research, Department of Methodology, Medical University of Warsaw, Banacha 1b, 02-097, Warsaw, Poland
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15
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Resolvin E1 Ameliorates Pulpitis by Suppressing Dental Pulp Fibroblast Activation in a Chemerin Receptor 23-dependent Manner. J Endod 2019; 45:1126-1134.e1. [PMID: 31353056 DOI: 10.1016/j.joen.2019.05.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 04/02/2019] [Accepted: 05/03/2019] [Indexed: 12/13/2022]
Abstract
INTRODUCTION Timely resolution of pulp inflammation is a prerequisite for the healing of inflamed dental pulp. Stromal cells, particularly fibroblasts, play a critical role in the inflammation resolution process. Resolvin E1 (RvE1) is a lipid-derived endogenous proresolution molecule that mediates this resolution process. In the present study, we investigated the effects of RvE1 on dental fibroblasts during the pathogenesis of pulpitis. METHODS The pulp tissues in maxillary incisors of male Sprague-Dawley rats (N = 50) were exposed to the oral environment for 0, 9, 24, and 48 hours, after which they were treated with RvE1 or its vehicle. The inflammatory changes after 24 hours were assessed using hematoxylin-eosin staining, immunohistochemistry, enzyme-linked immunosorbent assay, and quantitative polymerase chain reaction. Chemerin receptor 23 (ChemR23) expression in rat pulp tissues and human dental fibroblasts was detected by immunofluorescence, Western blot analysis, and quantitative polymerase chain reaction. Finally, small interfering RNA-based knockdown studies were performed to evaluate the effects of RvE1 inhibition on proinflammatory genes and nuclear factor kappa B signaling of human dental pulp fibroblasts. RESULTS Early treatment (within 24 hours after pulp exposure) with RvE1 promoted a decline in the number of inflammatory cells and gene expression of proinflammatory cytokines. Moreover, it reduced ChemR23 expression in the fibroblastlike cells of inflamed pulp tissues. In vitro, ChemR23 was widely expressed in human dental fibroblasts. RvE1 significantly suppressed cytokine production by fibroblasts, with down-regulation of the nuclear translocation of nuclear factor kappa B p65 in these cells. Knockdown of ChemR23 almost abolished the anti-inflammatory effect of RvE1. CONCLUSIONS RvE1 can suppress the activation of dental pulp fibroblasts in a ChemR23-dependent manner and inhibit inflammation in the relevant early stages of pulpitis.
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16
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Toledano-Osorio M, Babu JP, Osorio R, Medina-Castillo AL, García-Godoy F, Toledano M. Modified Polymeric Nanoparticles Exert In Vitro Antimicrobial Activity Against Oral Bacteria. MATERIALS 2018; 11:ma11061013. [PMID: 29904023 PMCID: PMC6024984 DOI: 10.3390/ma11061013] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 06/05/2018] [Accepted: 06/13/2018] [Indexed: 11/25/2022]
Abstract
Polymeric nanoparticles were modified to exert antimicrobial activity against oral bacteria. Nanoparticles were loaded with calcium, zinc and doxycycline. Ions and doxycycline release were measured by inductively coupled plasma optical emission spectrometer and high performance liquid chromatography. Porphyromonas gingivalis, Lactobacillus lactis, Streptoccocus mutans, gordonii and sobrinus were grown and the number of bacteria was determined by optical density. Nanoparticles were suspended in phosphate-buffered saline (PBS) at 10, 1 and 0.1 mg/mL and incubated with 1.0 mL of each bacterial suspension for 3, 12, and 24 h. The bacterial viability was assessed by determining their ability to cleave the tetrazolium salt to a formazan dye. Data were analyzed by ANOVA and Scheffe’s F (p < 0.05). Doxycycline doping efficacy was 70%. A burst liberation effect was produced during the first 7 days. After 21 days, a sustained release above 6 µg/mL, was observed. Calcium and zinc liberation were about 1 and 0.02 µg/mL respectively. The most effective antibacterial material was found to be the Dox-Nanoparticles (60% to 99% reduction) followed by Ca-Nanoparticles or Zn-Nanoparticles (30% to 70% reduction) and finally the non-doped nanoparticles (7% to 35% reduction). P. gingivalis, S. mutans and L. lactis were the most susceptible bacteria, being S. gordonii and S. sobrinus the most resistant to the tested nanoparticles.
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Affiliation(s)
| | - Jegdish P Babu
- College of Dentistry, University of Tennessee Health Science Center, 875 Union Avenue, Memphis, TN 381632110, USA.
| | - Raquel Osorio
- Dental School, University of Granada, Campus de Cartuja s/n, 18071 Granada, Spain.
| | - Antonio L Medina-Castillo
- NanoMyP, Spin-Off Enterprise from University of Granada, Edificio BIC-Granada, Av. Innovación 1, Armilla, 18016 Granada, Spain.
| | - Franklin García-Godoy
- College of Dentistry, University of Tennessee Health Science Center, 875 Union Avenue, Memphis, TN 381632110, USA.
| | - Manuel Toledano
- Dental School, University of Granada, Campus de Cartuja s/n, 18071 Granada, Spain.
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17
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Ballal V, Rao S, Bagheri A, Bhat V, Attin T, Zehnder M. MMP-9 in Dentinal Fluid Correlates with Caries Lesion Depth. Caries Res 2017; 51:460-465. [DOI: 10.1159/000479040] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Accepted: 06/23/2017] [Indexed: 11/19/2022] Open
Abstract
The analysis of molecular cues in dentinal fluid from an excavated cavity could improve diagnostics in the context of minimally invasive caries treatment. In the current clinical trial we assessed whether the dentinal fluid levels of MMP-9 (matrix metalloproteinase-9; neutrophil gelatinase) would increase with the progression of carious lesions. MMP-9 is associated with neutrophil-related tissue breakdown in the pulp. Absolute MMP-9 levels were contrasted against the levels of MMP-2, an enzyme related to normal tissue turnover. Dentinal fluid was collected below deep and shallow caries from molars and premolars within the same patients aged 18 years and older (n = 30, 1 tooth per group/patient). Experimental teeth were isolated under a rubber dam prior to excavation. Dentinal fluid was collected from the bottom of the cavity using a size 25 paper point. MMP levels were assessed using an enzyme-linked immunosorbent assay. Nonparametric methods were applied to test for differences between groups. Significantly more (p < 0.05, Wilcoxon test) MMP-9 was collected from the deep carious lesions than from the shallow counterparts. Pairwise comparison of MMP-9 values within patients revealed that there was more MMP-9 collected from deep lesions than from shallow counterparts in 27 of the 30 individuals under investigation (pairwise Wilcoxon test, p < 0.001). In contrast, no such difference existed for MMP-2. There was a high correlation between MMP-9 from deep and shallow lesions (Spearman's ρ = 0.72, p < 0.001), indicating that patients with more MMP-9 in the deep carious lesion also tended to have more MMP-9 in the shallow lesion.
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18
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Zanini M, Meyer E, Simon S. Pulp Inflammation Diagnosis from Clinical to Inflammatory Mediators: A Systematic Review. J Endod 2017; 43:1033-1051. [PMID: 28527838 DOI: 10.1016/j.joen.2017.02.009] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2017] [Revised: 02/02/2017] [Accepted: 02/15/2017] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Similar to other tissues, the dental pulp mounts an inflammatory reaction as a way to eliminate pathogens and stimulate repair. Pulp inflammation is prerequisite for dentin pulp complex repair and regeneration; otherwise, chronic disease or pulp necrosis occurs. Evaluation of pulp inflammation severity is necessary to predict the clinical success of maintaining pulp vitality. Clinical limitations to evaluating in situ inflammatory status are well-described. A molecular approach that aids clinical distinction between reversible and irreversible pulpitis could improve the success rate of vital pulp therapy. The aim of this article is to review inflammatory mediator expression in the context of clinical diagnosis. METHODS We searched PubMed and Cochrane databases for articles published between 1970 and December 2016. Only published studies of inflammatory mediator expression related to clinical diagnosis were eligible for inclusion and analysis. RESULTS Thirty-two articles were analyzed. Two molecular approaches were described by study methods, protein expression analysis and gene expression analysis. Our review indicates that interleukin-8, matrix metalloproteinase 9, tumor necrosis factor-α, and receptor for advanced glycation end products expression increase at both the gene and protein levels during inflammation. CONCLUSIONS Clinical irreversible pulpitis is related to specific levels of inflammatory mediator expression. The difference in expression between reversible and irreversible disease is both quantitative and qualitative. On the basis of our analysis, in situ quantification of inflammatory mediators may aid in the clinical distinction between reversible and irreversible pulpitis.
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Affiliation(s)
- Marjorie Zanini
- UFR d'odontologie, Université Paris Diderot, Paris, France; Groupe Hospitalier Pitié Salpêtrière-Charles Foix, Paris, France
| | - Elisabeth Meyer
- UFR d'odontologie, Université Paris Diderot, Paris, France; Groupe Hospitalier Pitié Salpêtrière-Charles Foix, Paris, France
| | - Stéphane Simon
- UFR d'odontologie, Université Paris Diderot, Paris, France; Groupe Hospitalier Pitié Salpêtrière-Charles Foix, Paris, France; UMRS INSERM 1138 Team 5, Centre de recherche des Cordeliers, Paris, France.
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19
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de Barros Silva PG, Verde MEQL, Brizeno LAC, Wong DVT, Lima Júnior RCP, Sousa FB, Mota MRL, Alves APNN. Immune cell profile of dental pulp tissue treated with zoledronic acid. Int Endod J 2017; 50:1067-1076. [PMID: 27977859 DOI: 10.1111/iej.12734] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 12/07/2016] [Indexed: 02/02/2023]
Abstract
AIM To characterize the pulp immune cell profile in the teeth of rats treated with zoledronic acid (ZA). METHODOLOGY Male Wistar rats (n = 6 per group) received four intravenous infusions of ZA at doses of 0.04, 0.20 or 1.00 mg kg-1 ZA or saline (control). On the 70th experimental day, they were euthanized. The first right molar was examined microscopically and submitted to toluidine blue reaction and immunohistochemical for CD68, tumour necrosis Factor (TNF)-α, interleukin (IL)-1β, inducible nitric oxide synthase (iNOS), nuclear factor kappa B (NF-kB) and IL-18 binding protein (IL-18 bp). The presence of ectasic/dilated vessels and inflammatory cells was analysed, and mast cells and mononuclear CD68-positive cells were counted along with the intensity of immunostaining (0-3) for inflammatory markers in odontoblasts and nonodontoblasts pulp cells. The Kruskal-Wallis/Dunn's test (scores or quantitative data) and the chi-squared test (categorical data) were used (GraphPad Prism 5.0, P < 0.05). RESULTS There was no differences in the number of animals exhibiting dilated/ectasic blood vessels (P = 0.242) and inflammatory cells (P = 0.489) or in the number of mast cells (P = 1.000). However, there was an increase in mononuclear CD68-positive cells (P = 0.026), immunostaining of TNF-α (P = 0.020), IL-1β (P = 0.027) and iNOS (P = 0.001) in odontoblasts, and IL-1β (P = 0.013) in nonodontoblast pulp cells dose-dependently. NFkB (nucleus and cytoplasm) and IL-18 bp did not differ between groups. CONCLUSION ZA modified the immune cell profile in the dental pulp, increasing the number of macrophages and expression of pro-inflammatory markers independent of NFkB.
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Affiliation(s)
- P G de Barros Silva
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceara, Fortaleza, Ceara, Brazil
| | - M E Q L Verde
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceara, Fortaleza, Ceara, Brazil
| | - L A C Brizeno
- Department of Biotechnology, Faculty of Biotechnology, Federal University of Ceara, Fortaleza, Ceara, Brazil
| | - D V T Wong
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceara, Fortaleza, Ceara, Brazil
| | - R C P Lima Júnior
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceara, Fortaleza, Ceara, Brazil
| | - F B Sousa
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceara, Fortaleza, Ceara, Brazil
| | - M R L Mota
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceara, Fortaleza, Ceara, Brazil
| | - A P N N Alves
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceara, Fortaleza, Ceara, Brazil
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20
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Rechenberg DK, Galicia JC, Peters OA. Biological Markers for Pulpal Inflammation: A Systematic Review. PLoS One 2016; 11:e0167289. [PMID: 27898727 PMCID: PMC5127562 DOI: 10.1371/journal.pone.0167289] [Citation(s) in RCA: 109] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 11/11/2016] [Indexed: 12/31/2022] Open
Abstract
Background and Objective Pulpitis is mainly caused by an opportunistic infection of the pulp space with commensal oral microorganisms. Depending on the state of inflammation, different treatment regimes are currently advocated. Predictable vital pulp therapy depends on accurate determination of the pulpal status that will allow repair to occur. The role of several players of the host response in pulpitis is well documented: cytokines, proteases, inflammatory mediators, growth factors, antimicrobial peptides and others contribute to pulpal defense mechanisms; these factors may serve as biomarkers that indicate the status of the pulp. Therefore, the aim of this systematic review was to evaluate the presence of biomarkers in pulpitis. Methods The electronic databases of MEDLINE, EMBASE, Scopus and other sources were searched for English and non-English articles published through February 2015. Two independent reviewers extracted information regarding study design, tissue or analyte used, outcome measures, results and conclusions for each article. The quality of the included studies was assessed using a modification of the Newcastle-Ottawa-Scale. Results and Conclusions From the initial 847 publications evaluated, a total of 57 articles were included in this review. In general, irreversible pulpitis was associated with different expression of various biomarkers compared to normal controls. These biomarkers were significantly expressed not only in pulp tissue, but also in gingival crevicular fluid that can be collected non-invasively, and in dentin fluid that can be analyzed without extirpating the entire pulpal tissue. Such data may then be used to accurately differentiate diseased from healthy pulp tissue. The interplay of pulpal biomarkers and their potential use for a more accurate and biologically based diagnostic tool in endodontics is envisaged.
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Affiliation(s)
- Dan-Krister Rechenberg
- Department of Preventive Dentistry, Periodontology and Cariology, Center of Dental Medicine, University of Zürich, Zürich, Switzerland
- * E-mail:
| | - Johnah C. Galicia
- Department of Endodontics, Arthur A. Dugoni School of Dentistry, University of the Pacific, San Francisco, California, United States of America
| | - Ove A. Peters
- Department of Endodontics, Arthur A. Dugoni School of Dentistry, University of the Pacific, San Francisco, California, United States of America
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21
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Alfakry H, Malle E, Koyani CN, Pussinen PJ, Sorsa T. Neutrophil proteolytic activation cascades: a possible mechanistic link between chronic periodontitis and coronary heart disease. Innate Immun 2016; 22:85-99. [PMID: 26608308 DOI: 10.1177/1753425915617521] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Accepted: 10/13/2015] [Indexed: 12/30/2022] Open
Abstract
Cardiovascular diseases are chronic inflammatory diseases that affect a large segment of society. Coronary heart disease (CHD), the most common cardiovascular disease, progresses over several years and affects millions of people worldwide. Chronic infections may contribute to the systemic inflammation and enhance the risk for CHD. Periodontitis is one of the most common chronic infections that affects up to 50% of the adult population. Under inflammatory conditions the activation of endogenous degradation pathways mediated by immune responses leads to the release of destructive cellular molecules from both resident and immigrant cells. Matrix metalloproteinases (MMPs) and their regulators can activate each other and play an important role in immune response via degrading extracellular matrix components and modulating cytokines and chemokines. The action of MMPs is required for immigrant cell recruitment at the site of inflammation. Stimulated neutrophils represent the major pathogen-fighting immune cells that upregulate expression of several proteinases and oxidative enzymes, which can degrade extracellular matrix components (e.g. MMP-8, MMP-9 and neutrophil elastase). The activity of MMPs is regulated by endogenous inhibitors and/or candidate MMPs (e.g. MMP-7). The balance between MMPs and their inhibitors is thought to mirror the proteolytic burden. Thus, neutrophil-derived biomarkers, including myeloperoxidase, may activate proteolytic destructive cascades that are involved in subsequent immune-pathological events associated with both periodontitis and CHD. Here, we review the existing studies on the contribution of MMPs and their regulators to the infection-related pathology. Also, we discuss the possible proteolytic involvement and role of neutrophil-derived enzymes as an etiological link between chronic periodontitis and CHD.
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Affiliation(s)
- Hatem Alfakry
- Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Ernst Malle
- Institute of Molecular Biology and Biochemistry, Medical University of Graz, Graz, Austria
| | - Chintan N Koyani
- Institute of Molecular Biology and Biochemistry, Medical University of Graz, Graz, Austria
| | - Pirkko J Pussinen
- Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Timo Sorsa
- Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland Division of Periodontology, Department of Dental Medicine, Karolinska Institutet, Huddinge, Sweden
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22
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Herrera DR, Silva EJNL, Santos CC, Zaia AA, Ferraz CCR, Almeida JFA, Gomes BPFA. Root canal content from primary endodontic infection and upregulation of gelatinases in fibroblast cells. Int Endod J 2015; 48:1168-74. [DOI: 10.1111/iej.12421] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Accepted: 12/03/2014] [Indexed: 11/26/2022]
Affiliation(s)
- D. R. Herrera
- Department of Restorative Dentistry; Endodontics Division; Piracicaba Dental School; State University of Campinas - UNICAMP; Piracicaba Brazil
| | - E. J. N. L. Silva
- Department of Restorative Dentistry; Endodontics Division; Piracicaba Dental School; State University of Campinas - UNICAMP; Piracicaba Brazil
- Health and Science Center; Grande Rio University (UNIGRANRIO); Rio de Janeiro Brazil
| | - C. C. Santos
- Department of Restorative Dentistry; Endodontics Division; Piracicaba Dental School; State University of Campinas - UNICAMP; Piracicaba Brazil
| | - A. A. Zaia
- Department of Restorative Dentistry; Endodontics Division; Piracicaba Dental School; State University of Campinas - UNICAMP; Piracicaba Brazil
| | - C. C. R. Ferraz
- Department of Restorative Dentistry; Endodontics Division; Piracicaba Dental School; State University of Campinas - UNICAMP; Piracicaba Brazil
| | - J. F. A. Almeida
- Department of Restorative Dentistry; Endodontics Division; Piracicaba Dental School; State University of Campinas - UNICAMP; Piracicaba Brazil
| | - B. P. F. A. Gomes
- Department of Restorative Dentistry; Endodontics Division; Piracicaba Dental School; State University of Campinas - UNICAMP; Piracicaba Brazil
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Osorio R, Yamauti M, Sauro S, Watson TF, Toledano M. Zinc Incorporation Improves Biological Activity of Beta-tricalcium Silicate Resin–based Cement. J Endod 2014; 40:1840-5. [DOI: 10.1016/j.joen.2014.06.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Revised: 06/11/2014] [Accepted: 06/16/2014] [Indexed: 12/31/2022]
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MMP9 Deficiency Increased the Size of Experimentally Induced Apical Periodontitis. J Endod 2014; 40:658-64. [DOI: 10.1016/j.joen.2014.01.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2013] [Revised: 10/01/2013] [Accepted: 01/02/2014] [Indexed: 12/12/2022]
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