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Nawal RR, Yadav S, Duncan HF, Talwar S, Kaushik A, Singh VK, Koner BC. Discriminatory performance of the pulpal inflammatory biomarkers; Interleukin-8 and TNF-α in patients with symptoms indicative of reversible and irreversible pulpitis: A diagnostic accuracy study. Int Endod J 2024; 57:1200-1211. [PMID: 38703070 DOI: 10.1111/iej.14078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 04/03/2024] [Accepted: 04/21/2024] [Indexed: 05/06/2024]
Abstract
AIM The success of vital pulp treatment (VPT) procedures is dependent on an accurate diagnosis of the pulpal inflammatory condition. Compared with current subjective pulpal diagnostic tests, inflammatory molecular biomarkers involved in the pathogenesis of pulpitis represent potential objective indicators of the degree of pulpal inflammation. Therefore, the aim of this study was to quantify level of inflammatory biomarkers - Interleukin 8 (IL-8) and TNF-α in patients diagnosed with reversible pulpitis (RP), irreversible pulpitis (IR) and normal pulp (NP) and investigate their diagnostic accuracy in differentiating between healthy and inflamed conditions. METHODOLOGY This prospective, cross-sectional study enrolled 72 patients aged 14-53 years with extremely deep carious lesions after establishing a clinical diagnosis of RP (n = 42), symptomatic IR (n = 22) and NP (n = 8). 50 μL of pulpal blood sample was collected from all the patients using a micropipette after pulpal exposure. The level of IL-8 and TNF-α was assessed in pg/mL using enzyme-linked immunosorbent assays. Mann-Whitney U test was applied to establish the association between IL-8/TNF-α level and degree of pulp inflammation. Receiver operating curve (ROC) analysis was carried out to calculate area under the curve (AUC) for RP versus IR. Cut-off values were established using Youden's index. RESULTS IL-8 and TNF-α levels differed significantly between RP and IR groups (p ≤ .001). The median value of IL-8 in RP and IP groups was 259.8 pg/mL [187.5-310.0] and 1357.8 pg/mL [1036.7-2177.6] respectively. The AUC-ROC curve for RP versus IR was 0.997 with 95.5% sensitivity and 99.76% specificity. The median value of TNF-α in RP and IR groups was 75.4 pg/mL [62.7-95.8] and 157.6 pg/mL [94.1-347.3]. The AUC-ROC curve for TNF-α was 0.812 with a sensitivity and specificity of 59.1% and 92.1%, respectively. IL-8 and TNF-α levels were below detection levels for all NP samples. CONCLUSION This study showed that pulpal blood could provide an excellent medium for establishing pulpal diagnosis under extremely deep carious lesions. The selected cytokines, IL-8 and TNF-α, demonstrated excellent discriminatory performance for reversible and irreversible pulpitis. Future studies should correlate the IL-8/TNF-α levels with VPT treatment outcomes.
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Affiliation(s)
- Ruchika Roongta Nawal
- Department of Conservative Dentistry & Endodontics, Maulana Azad Institute of Dental Sciences, New Delhi, India
| | - Sudha Yadav
- Department of Conservative Dentistry & Endodontics, Maulana Azad Institute of Dental Sciences, New Delhi, India
| | - Henry Fergus Duncan
- Division of Restorative Dentistry, Dublin Dental University Hospital, Trinity College Dublin, Dublin, Ireland
| | - Sangeeta Talwar
- Department of Conservative Dentistry & Endodontics, Maulana Azad Institute of Dental Sciences, New Delhi, India
| | - Aishvarya Kaushik
- Department of Conservative Dentistry & Endodontics, Maulana Azad Institute of Dental Sciences, New Delhi, India
| | - Vijay K Singh
- Department of Biochemistry, Maulana Azad Medical College and Associated Hospitals, New Delhi, India
| | - Bidhan C Koner
- Department of Biochemistry, Maulana Azad Medical College and Associated Hospitals, New Delhi, India
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Xiao Z, Zhang Y, She Y, Yuan G, Yang G. IPO7 promotes lipopolysaccharide-induced inflammatory responses in human dental pulp cells via p38 MAPK and NF-κB signaling pathways. Mol Immunol 2023; 163:116-126. [PMID: 37769576 DOI: 10.1016/j.molimm.2023.09.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 07/19/2023] [Accepted: 09/14/2023] [Indexed: 10/03/2023]
Abstract
Pulpitis is a chronic inflammatory process that greatly affects the physical, mental health and life quality of patients. Human dental pulp cells (hDPCs) are essential components of dental pulp tissue and play a significant role in pulpitis. Lipopolysaccharide (LPS) is an initiator of pulpitis and can induce the production of inflammatory cytokines in hDPCs by activating p38 MAPK and NF-κB signaling pathways. Importin7 (IPO7), a member of the importin-β family, is widely expressed in many tissues. Previous studies have shown that IPO7 mediated nuclear translocation of p-p38 after stimulation, and IPO7 homologous protein IPO8 participated in human dental pulp inflammation. This research aims to investigate whether IPO7 is involved in pulpitis and explore its underlying mechanisms. In the current study, we found the expression of IPO7 was increased in pulpitis tissue. In vitro, hDPCs treated with LPS to mimic the inflammatory environment, the expression of IPO7 was increased. Knockdown of IPO7 significantly inhibited the production of inflammatory cytokines and suppressed the p38 MAPK and NF-κB signaling pathways. Activating the p38 MAPK and NF-κB signaling pathways by the p38 activator and p65 activator reversed the inflammatory responses. IPO7 interacted with p-p38 under LPS stimulation in hDPCs. In addition, the increased binding between IPO7 and p-p38 is associated with the decreased binding ability of IPO7 to Sirt2. In conclusion, we found that IPO7 was highly expressed in pulpitis and played a vital role in modulating human dental pulp inflammation.
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Affiliation(s)
- Ziqiu Xiao
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University
| | - Yue Zhang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University
| | - Yawei She
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University
| | - Guohua Yuan
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University
| | - Guobin Yang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University.
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3
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Soheilifar MH, Nobari S, Hakimi M, Adel B, Masoudi-Khoram N, Reyhani E, Neghab HK. Current concepts of microRNA-mediated regulatory mechanisms in human pulp tissue-derived stem cells: a snapshot in the regenerative dentistry. Cell Tissue Res 2023:10.1007/s00441-023-03792-4. [PMID: 37247032 DOI: 10.1007/s00441-023-03792-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 05/12/2023] [Indexed: 05/30/2023]
Abstract
One of the most studied class of non-coding RNAs is microRNAs (miRNAs) which regulate more than 60% of human genes. A network of miRNA gene interactions participates in stem cell self-renewal, proliferation, migration, apoptosis, immunomodulation, and differentiation. Human pulp tissue-derived stem cells (PSCs) are an attractive source of dental mesenchymal stem cells (MSCs) which comprise human dental pulp stem cells (hDPSCs) obtained from the dental pulp of permanent teeth and stem cells isolated from exfoliated deciduous teeth (SHEDs) that would be a therapeutic opportunity in stomatognathic system reconstruction and repair of other damaged tissues. The regenerative capacity of hDPSCs and SHEDs is mediated by osteogenic, odontogenic, myogenic, neurogenic, angiogenic differentiation, and immunomodulatory function. Multi-lineage differentiation of PSCs can be induced or inhibited by the interaction of miRNAs with their target genes. Manipulating the expression of functional miRNAs in PSCs by mimicking miRNAs or inhibiting miRNAs emerged as a therapeutic tool in the clinical translation. However, the effectiveness and safety of miRNA-based therapeutics, besides higher stability, biocompatibility, less off-target effects, and immunologic reactions, have received particular attention. This review aimed to comprehensively overview the molecular mechanisms underlying miRNA-modified PSCs as a futuristic therapeutic option in regenerative dentistry.
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Affiliation(s)
| | - Sima Nobari
- Research Center for Molecular Medicine, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Maryam Hakimi
- Department of Molecular Genetics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Bashir Adel
- Department of Biology, Faculty of Sciences, University of Guilan, Rasht, Iran
| | - Nastaran Masoudi-Khoram
- Department of Biophysics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Elahe Reyhani
- Faculty of Dentistry, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Hoda Keshmiri Neghab
- Department of Photo Healing and Regeneration, Medical Laser Research Center, Yara Institute, ACECR, Tehran, Iran
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ASSADIAN H, KHOJASTEH A, EBRAHIMIAN Z, AHMADINEJAD F, BOROOJENI HSH, BOHLOULI M, NEKOOFAR MH, MH DUMMER P, NOKHBATOLFOGHAHAEI H. Comparative evaluation of the effects of three hydraulic calcium silicate cements on odontoblastic differentiation of human dental pulp stem cells: an in vitro study. J Appl Oral Sci 2022; 30:e20220203. [PMID: 36350874 PMCID: PMC9651926 DOI: 10.1590/1678-7757-2022-0203] [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: 06/09/2022] [Accepted: 09/02/2022] [Indexed: 12/23/2022] Open
Abstract
OBJECTIVE The study aimed to compare the response of human dental pulp stem cells (hDPSCs) towards three hydraulic calcium silicate cements (HCSCs) by measuring cytotoxicity and expression of dentinogenic genes. METHODOLOGY Dental pulps of five impacted mandibular third molars were extirpated as a source for hDPSCs. Next to culturing, hDPSCs were subjected to fluorescence-activated cell sorting after the third passage to validate stemness of the cells. Human DPSCs were exposed to diluted supernatants of OrthoMTA (OMTA), Biodentine (BD) and Calcium-Enriched Mixture (CEM) at concentrations 10, 25, 50 and 100% at the first, third and fifth day of culture. Then, cells were exposed to 10% concentrations supernatant of HCSCs to determine DSPP and DMP1 gene expression, using a quantitative polymerase-chain reaction. Data were analyzed using one-way and three-way ANOVA, followed by Tukey post hoc statistical tests. RESULTS Optimal cell proliferation was observed in all groups, regardless of concentration and time-point. HCSC supernatants were non-cytotoxic to hDPSCs at all three time-points, except for 100% Biodentine on day five. On day seven, OMTA group significantly upregulated the expression of DSPP and DMP1 genes. On day 14, expression of DMP1 and DSPP genes were significantly higher in BD and OMTA groups, respectively. CONCLUSION Biodentine significantly upregulated DMP1 gene expression over 14 days, whereas CEM was associated with only minimal expression of DSPP and DMP1 .
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Affiliation(s)
- Hadi ASSADIAN
- Tehran University of Medical SciencesSchool of DentistryDepartment of EndodonticsTehranIranTehran University of Medical Sciences, School of Dentistry, Department of Endodontics, Tehran, Iran.
| | - Arash KHOJASTEH
- Shahid Beheshti University of Medical SciencesResearch Institute of Dental SciencesDental Research CenterTehranIranShahid Beheshti University of Medical Sciences, Research Institute of Dental Sciences, Dental Research Center, Tehran, Iran.
| | | | - Fereshteh AHMADINEJAD
- Shahrekord University of Medical ScienceCellular and Molecular Research CenterShahrekordIranShahrekord University of Medical Science, Cellular and Molecular Research Center, Shahrekord, Iran.
| | - Helia Sadat Haeri BOROOJENI
- Shahid Beheshti University of Medical SciencesResearch Institute of Dental SciencesDental Research CenterTehranIranShahid Beheshti University of Medical Sciences, Research Institute of Dental Sciences, Dental Research Center, Tehran, Iran.
| | - Mahboubeh BOHLOULI
- Shahid Beheshti University of Medical SciencesSchool of Advanced Technologies in MedicineDepartment of Tissue Engineering and Applied Cell SciencesTehranIranShahid Beheshti University of Medical Sciences, School of Advanced Technologies in Medicine, Department of Tissue Engineering and Applied Cell Sciences, Tehran, Iran.
| | - Mohammad Hossein NEKOOFAR
- Tehran University of Medical SciencesSchool of DentistryDepartment of EndodonticsTehranIranTehran University of Medical Sciences, School of Dentistry, Department of Endodontics, Tehran, Iran.
| | - Paul MH DUMMER
- Cardiff UniversityCollege of Biomedical and Life SciencesSchool of DentistryCardiffUKCardiff University, College of Biomedical and Life Sciences, School of Dentistry, Cardiff, UK.
| | - Hanieh NOKHBATOLFOGHAHAEI
- Shahid Beheshti University of Medical SciencesResearch Institute of Dental SciencesDental Research CenterTehranIranShahid Beheshti University of Medical Sciences, Research Institute of Dental Sciences, Dental Research Center, Tehran, Iran.
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5
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de Oliveira PY, Lacerda MFLS, Maranduba CMDC, Rettore JVP, Vieira LQ, Ribeiro AP. The response of Mesenchymal Stem Cells to endodontic materials. Braz Dent J 2022; 33:33-43. [PMID: 35508034 PMCID: PMC9645149 DOI: 10.1590/0103-6440202204786] [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: 11/16/2021] [Accepted: 02/24/2022] [Indexed: 12/31/2022] Open
Abstract
An endodontic material must be minimally harmful to stem cells since they are essential, thanks to their capacity for cell proliferation, self-renewal, and differentiation. For this reason, in this in vitro study, the cell viability and the expression of genes involved in cell plasticity and differentiation were investigated in stem cells recovered from human dental pulp (hDPSCs) that were in contact with four endodontic materials (Endofill, MTA, Pulp Canal Sealer, and Sealer 26). The viability of HDPSCs was assessed by MTT and trypan blue exclusion assays. PCR evaluated cellular plasticity by determining the CD34, CD45, Nestin, CD105, Nanog, and OCT4 expressions. The effect on cell differentiation was determined by RT-PCR expression of the RUNX2, ALP, OC/BGLAP, and DMP1 genes. The data were analyzed using ANOVA with Bonferroni correction (p <0.05). Pulp Canal Sealer and Endofill decreased cell viability after 48 hours (p <0.001). MTA and Sealer 26 did not disrupt cell viability (p> 0.05). When cultivated in the presence of MTA and Sealer 26, hDPSCs expressed Nestin, CD105, NANOG, and OCT-4 and did not express CD34 and CD45. MTA and Sealer 26 interfered with DMP1, OC/BGLAP and RUNX2 expressions (p <0.05) but did not change ALP gene expression (p> 0.05). MTA and Sealer 26 showed biological compatibility in the presence of hDPSCs.
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Affiliation(s)
- Patrícia Yanne de Oliveira
- Department of Operative Denstistry, School of Dentistry,
Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | | | | | - João Vitor Paes Rettore
- Department of Genetics, Institute of Biological Sciences,
Universidade Federal de Juiz de Fora, Juiz de Fora, MG, Brazil
| | - Leda Quercia Vieira
- Department of Biochemistry and Immunology, Institute of Biological
Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Antônio Paulino Ribeiro
- Department of Operative Denstistry, School of Dentistry,
Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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Cao R, Wang Q, Wu J, Liu M, Han Q, Wang X. Nell-1 attenuates lipopolysaccharide-induced inflammation in human dental pulp cells. J Mol Histol 2021; 52:671-680. [PMID: 33905072 DOI: 10.1007/s10735-021-09976-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 04/20/2021] [Indexed: 02/04/2023]
Abstract
Nel-like molecule type 1 (Nell-1) is a secreted protein that plays an important role in osteoinduction in multiple animal models. A previous study has suggested the anti-inflammatory effect of Nell-1 on bone inflammation inhibition. However, its role in pulpitis has not been investigated. The present study aims to explore the effect of human recombinant Nell-1 (Nell-1) on rat pulp inflammation response, and its effect on lipopolysaccharide-induced inflammation in human dental pulp cells and its related intracellular signaling pathways. 30 Wistar rats with healthy non-carious maxillary first molars were chosen, Nell-1 was absorbed onto a sterile collagen sponge and capped onto exposed pulps. The expression of IL-6 and IL-8 were detected by immunohistochemical staining. Human dental pulp cells (hDPCs) were isolated from healthy extracted premolars and third molars. hDPCs were co-cultured with Escherichia coli lipopolysaccharide (LPS), Nell-1 protein, and mitogen-activated protein kinase (MAPK) inhibitors. The expression of pro-inflammatory cytokines and chemokines, such as IL-6 and IL-8, was examined via quantitative real-time PCR and enzyme-linked immunosorbent assay. The results showed that Nell-1 inhibited the inflammatory response of rat pulp. LPS treatment contributed to the expression of inflammatory factors in hDPCs, whereas Nell-1 obviously suppressed the LPS-induced inflammation. p38 MAPK and extracellular signal-regulated kinase (ERK) MAPK inhibitors attenuated the anti-inflammatory effect of hrNell-1, whereas the c-Jun N-terminal kinases (JNK) MAPK inhibitor exerted minimal effect. Therefore Nell-1 could inhibit LPS-induced inflammation in human dental pulp cells, and this effect may be mediated by p38 and ERK MAPK signaling pathways, but not JNK MAPK signaling pathway.
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Affiliation(s)
- Rongyu Cao
- School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No.44-1 Wenhua Road West, Jinan, 250012, Shandong, China
| | - Qiang Wang
- Jinan Stomatological Hospital, Jinan, 250001, Shandong, China
| | - Jiameng Wu
- School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No.44-1 Wenhua Road West, Jinan, 250012, Shandong, China
| | - Mengmeng Liu
- School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No.44-1 Wenhua Road West, Jinan, 250012, Shandong, China
| | - Qi Han
- School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No.44-1 Wenhua Road West, Jinan, 250012, Shandong, China
| | - Xiaoying Wang
- School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No.44-1 Wenhua Road West, Jinan, 250012, Shandong, China.
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7
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Kritikou K, Greabu M, Imre M, Miricescu D, Ripszky Totan A, Burcea M, Stanescu-Spinu II, Spinu T. ILs and MMPs Levels in Inflamed Human Dental Pulp: A Systematic Review. Molecules 2021; 26:4129. [PMID: 34299403 PMCID: PMC8304045 DOI: 10.3390/molecules26144129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 07/03/2021] [Accepted: 07/05/2021] [Indexed: 12/04/2022] Open
Abstract
A wide range of mediators are released from the pulp tissue because of bacterial invasion which causes inflammation. Interleukins (ILs) and matrix metalloproteinases (MMPs) have a leading role in initiating and spreading of inflammation because of their synergic action. Biomarkers such as ILs and MMPs can be identified via several methods, establishing the inflammatory response of the dental pulp. The aim of this systematic review is to evaluate the levels of ILs and/or MMPs in human dental pulp. PubMed, OVID, Cochrane, Scopus, Web of Science and Wiley online library databases were searched for original clinical studies. After applying inclusion and exclusion criteria, a quality assessment of studies was performed based on a modified Newcastle-Ottawa scale. In the review were included articles that evaluated the presence of ILs and/or MMPs in pulp tissue using enzyme-linked immunosorbent assay (ELISA) or western blot or multiplex assay. Six articles were included in the present synthesis. Although various diagnostic methods were used, statistically significant higher levels of ILs and/or MMPs were mostly found in the experimental groups compared to healthy pulp samples. The biomarkers studied can be a promising tool to evaluate pulp tissue health or even in pulpitis treatment.
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Affiliation(s)
- Konstantina Kritikou
- Department of Biochemistry, Faculty of Dental Medicine, Carol Davila University of Medicine and Pharmacy, 8 Eroilor Sanitari Blvd, Sector 5, 050474 Bucharest, Romania; (K.K.); (M.G.); (D.M.); (I.-I.S.-S.)
| | - Maria Greabu
- Department of Biochemistry, Faculty of Dental Medicine, Carol Davila University of Medicine and Pharmacy, 8 Eroilor Sanitari Blvd, Sector 5, 050474 Bucharest, Romania; (K.K.); (M.G.); (D.M.); (I.-I.S.-S.)
| | - Marina Imre
- Department of Complete Denture, Faculty of Dental Medicine, Carol Davila University of Medicine and Pharmacy, 8 Eroilor Sanitari Blvd, Sector 5, 050474 Bucharest, Romania;
| | - Daniela Miricescu
- Department of Biochemistry, Faculty of Dental Medicine, Carol Davila University of Medicine and Pharmacy, 8 Eroilor Sanitari Blvd, Sector 5, 050474 Bucharest, Romania; (K.K.); (M.G.); (D.M.); (I.-I.S.-S.)
| | - Alexandra Ripszky Totan
- Department of Biochemistry, Faculty of Dental Medicine, Carol Davila University of Medicine and Pharmacy, 8 Eroilor Sanitari Blvd, Sector 5, 050474 Bucharest, Romania; (K.K.); (M.G.); (D.M.); (I.-I.S.-S.)
| | - Marian Burcea
- Department of Ophthalmology, Faculty of General Medicine, Carol Davila University of Medicine and Pharmacy, 8 Eroilor Sanitari Blvd, Sector 5, 050474 Bucharest, Romania
| | - Iulia-Ioana Stanescu-Spinu
- Department of Biochemistry, Faculty of Dental Medicine, Carol Davila University of Medicine and Pharmacy, 8 Eroilor Sanitari Blvd, Sector 5, 050474 Bucharest, Romania; (K.K.); (M.G.); (D.M.); (I.-I.S.-S.)
| | - Tudor Spinu
- Department of Fixed Prosthodontics and Occlusion, Faculty of Dental Medicine, Carol Davila University of Medicine and Pharmacy, 17-23 Calea Plevnei, 010221 Bucharest, Romania;
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8
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Shah J, Manton DJ, McCullough MJ, Rajan S. Odontoblast markers and dentine reactions in carious primary molars with and without hypomineralised enamel defects. Int J Paediatr Dent 2021; 31:451-458. [PMID: 33222333 DOI: 10.1111/ipd.12750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 10/07/2020] [Accepted: 10/22/2020] [Indexed: 11/28/2022]
Abstract
BACKGROUND Wnt/β-Catenin signalling and DMP1 have key roles in tertiary dentinogenesis. AIM To compare the relationship between remaining dentine thickness (RDT), tertiary dentine thickness (TDT), β-catenin and dentine matrix protein 1 (DMP1) in carious second primary molar teeth with normal (SPM) and hypomineralised enamel (HSPM). DESIGN Extracted carious SPM and HSPM were fixed, sectioned (5 μm) and stained with haematoxylin and eosin or with indirect immunofluorescence for β-catenin and DMP1. Image analysis was performed to determine RDT, TDT, β-catenin and DMP1 intensity in the odontoblast layer and dentine-pulp complex. RESULTS Carious SPM (n = 11; mean RDT = 1536.1 μm) and HSPM (n = 12; mean RDT = 1179.9 μm) had mean TDT 248.6 μm and 518.1 μm, respectively (P = .02). There were no significant differences in intensity values in the odontoblast layer and dentine-pulp complex for β-catenin and DMP1 for both groups. CONCLUSION There was no observable variation in Wnt/β-catenin and DMP1 expression between HSPM and SPM despite a statistically significant twofold increased TDT in HSPM compared with SPM that had similar RDT. Thus, the observed increased TDT in HSPM is more likely due to an earlier onset of repair processes rather than an amplified response to caries.
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Affiliation(s)
- Janita Shah
- Paediatric Dentistry, Melbourne Dental School, The University of Melbourne, Melbourne, Vic., Australia.,Oral Health Services, Health Care Agency, Mahé, Republic of Seychelles
| | - David J Manton
- Paediatric Dentistry, Melbourne Dental School, The University of Melbourne, Melbourne, Vic., Australia.,Centrum voor Tandheelkunde en Mondzorgkunde, Universitair Medisch Centrum Groningen, Groningen, The Netherlands
| | - Michael J McCullough
- Oral Anatomy, Medicine and Surgery, Melbourne Dental School, The University of Melbourne, Melbourne, Vic., Australia
| | - Sadna Rajan
- Paediatric Dentistry, Melbourne Dental School, The University of Melbourne, Melbourne, Vic., Australia
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9
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Hu J, Chen W, Qiu Z, Lv H. Robust expression of SIRT6 inhibits pulpitis via activation of the TRPV1 channel. Cell Biochem Funct 2020; 38:676-682. [PMID: 32236974 DOI: 10.1002/cbf.3528] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 03/02/2020] [Accepted: 03/13/2020] [Indexed: 12/20/2022]
Abstract
Invasion of dentinal tubules and pulp tissue by pathogenic bacteria may cause infection leading to pulpitis. Sirtuin 6 (SIRT6) is a NAD-dependent protein deacetylase encoded by the SIRT6 gene. The effect of SIRT6 on lipopolysaccharide (LPS)-induced pulpitis and its mechanism of action were discussed in this study. Dental pulp cells (DPCs) were extracted from human teeth and injected with LPS to induce inflammation. The cells injected with LPS showed substantially decreased expression of SIRT6. The overexpression of SIRT6, induced by plasmid-transfection of DPCs with SIRT6 overexpressing vector, led to a marked decrease in proinflammatory cytokines (IL-6, IL-1β, and TNF-α) and deactivation of NF kappa B pathway. Additionally, dentin matrix protein-1 (DMP1), a promoter of inflammation in dental pulp tissues, was downregulated. Further investigation revealed that SIRT6 promotes ubiquitination of the transient receptor potential vanilloid 1 (TRPV1) channel, leading to its degradation and deactivation. The role of TRPV1 in the anti-inflammatory effects of SIRT6 was determined through incubation of SIRT6-expressing dental pulp stem cells (DPSCs) with capsaicin. This incubation counteracted the effect of SIRT6 on cytokines and DMP1. The injection of lentivirus-SIRT6 attenuated LPS-induced pulpitis in vivo by suppressing TRPV1 activity. Thus, SIRT6 inhibits the TRPV1 channel during LPS-induced inflammation of dental pulp. SIGNIFICANCE OF THE STUDY: This study discussed the effect of sirtuin 6 (SIRT6) on lipopolysaccharide (LPS)-induced pulpitis as well as its mechanism of action and found that SIRT6 may be a negative regulator of pulpitis. Additionally, low expression of SIRT6 and high expression of transient receptor potential vanilloid 1 (TRPV1) in LPS-treated human dental pulp cells are closely associated with proinflammatory cytokines, dentin matrix protein 1 expression, and activation of the NF-κB pathway, which indicated that TRPV1 may be a biomarker for pulpitis and the SIRT6-TRPV1-CGRP axis maybe a clinical target due to their role regulating inflammation and neuropathic pain.
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Affiliation(s)
- Jia Hu
- Department of Endodontics, Affiliated Stomatological Hospital of Fujian Medical University, Fuzhou, Fujian, China.,Fujian Provincial Key Laboratory of Stomatology, Fuzhou, Fujian, China
| | - Weiran Chen
- Fujian Provincial Key Laboratory of Stomatology, Fuzhou, Fujian, China.,Affiliated Stomatological Hospital of Fujian Medical University, Fuzhou, Fujian, China
| | - Zailing Qiu
- Fujian Provincial Key Laboratory of Stomatology, Fuzhou, Fujian, China.,Affiliated Stomatological Hospital of Fujian Medical University, Fuzhou, Fujian, China
| | - Hongbing Lv
- Department of Endodontics, Affiliated Stomatological Hospital of Fujian Medical University, Fuzhou, Fujian, China.,Fujian Provincial Key Laboratory of Stomatology, Fuzhou, Fujian, China
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Zheng H, Tian C, Zeng X, Liu T. WITHDRAWN: Overexpression of GLI2 induces odontogenic differentiation in human dental pulp stem cells through activation of the Wnt/β-catenin signaling pathway. Life Sci 2019:117178. [PMID: 31862452 DOI: 10.1016/j.lfs.2019.117178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 12/02/2019] [Accepted: 12/13/2019] [Indexed: 11/16/2022]
Abstract
This article has been withdrawn at the request of the authors. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/our-business/policies/article-withdrawal.
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Affiliation(s)
- Haiying Zheng
- Department of Stomatology, Affiliated Hospital of Jining Medical University, Jining 272000, PR China
| | - Chao Tian
- Department of Stomatology, Qingdao No. 8 People's Hospital, Qingdao 266100, PR China
| | - Xin Zeng
- Department of Stomatology, Qingdao Stomatological Hospital, Qingdao 266001, PR China
| | - Tao Liu
- Department of Stomatology, Affiliated Hospital of Jining Medical University, Jining 272000, PR China.
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Liu M, Mu H, Peng W, Zhao L, Hu W, Jiang Z, Gao L, Cao X, Li N, Han J. Time-dependent C5a and C5aR expression in dental pulp cells following stimulation with LTA and LPS. Int J Mol Med 2019; 44:823-834. [PMID: 31257457 PMCID: PMC6657968 DOI: 10.3892/ijmm.2019.4246] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 06/11/2019] [Indexed: 11/25/2022] Open
Abstract
Clinically, deep decay can lead to inflammation in the dental pulp. Apart from the use of various materials to sooth the inflamed pulp, there is currently no adequate treatment, and the gold standard, calcium hydroxide, that is used to cover the dentin/pulp, has limited effect. Sometimes the pulp will remain infected and cause pulpitis, and ultimately, the pulp will need to be removed. The first principle of oral treatment is to protect the pulp. Therefore, it is necessary to study the immune response and regeneration of pulp cells in conditions of deep decay. Of the terminal complement system proteins, complement 5a (C5a) has the most potent effect compared to complement 3a (C3a) and complement 4a (C4a). C5a is 20- to 2,500-fold stronger than C3a and C4a. The purpose of this study was to elucidate the association between C5a, secreted by complement activation, and the duration of inflammation. Another key goal was to detect the expression of C5a and its receptor, complement 5a receptor (C5aR). To this end, the cells were divided into 4 groups as per stimulation with lipoteichoic acid (LTA) or lipopolysaccharide (LPS) as follows: i) The 1 µg/ml LTA group; ii) the 1 µg/ml LPS group; iii) the 1 µg/ml LTA and 1 µg/ml LPS group; and iv) the PBS-only group, which served as a control. There were 5 time points for all 4 groups: 1, 2, 3, 5 and 7 days. Reverse transcription-quantitative polymerase chain reaction was used to detect the gene expression levels of C5a, C5aR and interleukin (IL)-6 at different time points. Western blot analyses was carried out to detect the expression of C5aR. Transmission electron microscopy was also conducted to assess the ultra-structural features of dental pulp cells. The gene expression trends of C5a and C5aR mRNA were identical. C5a and C5aR mRNA was highly expressed on the second day of LTA or LPS stimulation. However, in the LTA and LPS co-stimulation group, C5a and C5aR mRNA were highly expressed on both the first and second day, with higher levels on the second day. IL-6 expression decreased as time progressed in the LTA only and in the LTA + LPS co-stimulation groups. However, a peak in its expression was observed on the second day in the LPS group. On the whole, this study demonstrates that a 1 µg/ml concentration of LTA and LPS stimulates human dental pulp cells to activate the expression of C5a.
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Affiliation(s)
- Mingyue Liu
- Department of Prosthodontics, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Haibin Mu
- Department of Radiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Wenting Peng
- Department of Stomatology, Dezhou People's Hospital, Dezhou, Shandong 253000, P.R. China
| | - Lin Zhao
- Department of Stomatology, Dezhou People's Hospital, Dezhou, Shandong 253000, P.R. China
| | - Weiping Hu
- Department of Prosthodontics, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Zhuling Jiang
- Department of Oral Implantology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Li Gao
- Department of Oral and Maxillofacial Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Xiaofang Cao
- Department of Endodontics, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Ning Li
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Jingying Han
- Department of Orthodontics, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
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12
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Yuan H, Zhang H, Hong L, Zhao H, Wang J, Li H, Che H, Zhang Z. MicroRNA let-7c-5p Suppressed Lipopolysaccharide-Induced Dental Pulp Inflammation by Inhibiting Dentin Matrix Protein-1-Mediated Nuclear Factor kappa B (NF-κB) Pathway In Vitro and In Vivo. Med Sci Monit 2018; 24:6656-6665. [PMID: 30238933 PMCID: PMC6162970 DOI: 10.12659/msm.909093] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Background Let-7c-5p is down-regulated in dental pulp tissues in inflammatory disorders. The microRNA (miR) molecule shows an anti-inflammation potential due to its direct regulation of dentin matrix protein-1 (DMP1), which promotes inflammation changes in dental pulp tissues. In the present study, the effect of let-7c-5p on lipopolysaccharide (LPS)-induced pulpitis was detected and the associated mechanism was explored. Material/Methods Dental pulp stem cells (DPSCs) were isolated from rat dental tissues, infected with let-7c-5p lentivirus particles, and subjected to LPS administration to induce inflammation. Then, the effect of let-7c-5p overexpression on LPS-induced impairments on DPSCs were detected and the mechanism was explained by focusing on the DMP1 expression and NF-κB pathway. The role of DMP1 in the anti-inflammation effect of let-7c-5p was assessed by incubating let-7c-5p-expressed DPSCs with DMP1 protein. The results of in vitro assays were verified in LPS-induced rat pulpitis models. Results LPS administration increased the production of IL-1β and TNF-α and decreased DPSCs viability by increasing the expression of DMP1 and activating NF-κB pathway. However, the induced expression of let-7c-5p relieved DPSCs from LPS-induced inflammation and suppressed DMP1 as well as NF-κB pathway. The incubation of let-7c-5p-expressed DPSCs with DMP1 protein blocked the effect of let-7c-5p. In in vivo experiments, the injection of let-7c-5p attenuated LPS-induced pulpitis by inhibiting DMP1-mediated NF-κB pathway. Conclusions Findings outlined in the current study demonstrated the dental pulp protecting function of let-7c-5p during LPS-induced inflammation, which was exerted by inhibiting the DMP1-mediated NF-κB pathway.
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Affiliation(s)
- Hao Yuan
- Department of Endodontics, School of Stomatology, Jilin University, Changchun, Jilin, China (mainland)
| | - Hong Zhang
- Department of Endodontics, School of Stomatology, Jilin University, Changchun, Jilin, China (mainland)
| | - Lihua Hong
- Department of Endodontics, School of Stomatology, Jilin University, Changchun, Jilin, China (mainland)
| | - Hongyan Zhao
- Department of Endodontics, School of Stomatology, Jilin University, Changchun, Jilin, China (mainland)
| | - Jiafeng Wang
- Department of Endodontics, School of Stomatology, Jilin University, Changchun, Jilin, China (mainland)
| | - He Li
- Department of Endodontics, School of Stomatology, Jilin University, Changchun, Jilin, China (mainland)
| | - Hongze Che
- Department of Endodontics, School of Stomatology, Jilin University, Changchun, Jilin, China (mainland)
| | - Zhimin Zhang
- Department of Endodontics, School of Stomatology, Jilin University, Changchun, Jilin, China (mainland)
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da Rosa WLO, Piva E, da Silva AF. Disclosing the physiology of pulp tissue for vital pulp therapy. Int Endod J 2018; 51:829-846. [DOI: 10.1111/iej.12906] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2017] [Accepted: 01/30/2018] [Indexed: 12/23/2022]
Affiliation(s)
- W. L. O. da Rosa
- Department of Restorative Dentistry; School of Dentistry; Federal University of Pelotas; Pelotas Brazil
| | - E. Piva
- Department of Restorative Dentistry; School of Dentistry; Federal University of Pelotas; Pelotas Brazil
| | - A. F. da Silva
- Department of Restorative Dentistry; School of Dentistry; Federal University of Pelotas; Pelotas Brazil
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Lambrichts I, Driesen RB, Dillen Y, Gervois P, Ratajczak J, Vangansewinkel T, Wolfs E, Bronckaers A, Hilkens P. Dental Pulp Stem Cells: Their Potential in Reinnervation and Angiogenesis by Using Scaffolds. J Endod 2017; 43:S12-S16. [PMID: 28781091 DOI: 10.1016/j.joen.2017.06.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Dental pulp is a highly vascularized and innervated tissue containing a heterogeneous stem cell population with multilineage differentiation potential. Current endodontic treatments focus on the preservation of the pulp tissue and the regeneration of dental pulp after pathological insults. Human dental pulp stem cells (hDPSCs) are currently investigated as stem cell-based therapy for pulp regeneration and for peripheral nerve injury in which neurons and Schwann cells display limited regenerative capacity. We have developed a neuronal differentiation protocol for hDPSCs that requires neurosphere formation before neuronal maturation. Moreover, Schwann cell differentiation of hDPSCs in our group revealed that differentiated hDPSCs have acquired the ability to myelinate and guide neurites from dorsal root ganglia. Besides their dynamic differentiation capacity, hDPSCs were shown to exert a paracrine effect on neural and endothelial cells. Analysis of hDPSC conditioned medium revealed the secretion of a broad spectrum of growth factors including brain-derived neurotrophic factor, nerve growth factor, vascular endothelial growth factor, and glial-derived neurotrophic factor. Application of the conditioned medium to endothelial cells promoted cell migration and tubulogenesis, indicating a paracrine proangiogenic effect. This hypothesis was enforced by the enhanced formation of blood vessels in the chorioallantoic membrane assay in the presence of hDPSCs. In addition, transplantation of 3-dimensional-printed hydroxyapatite scaffolds containing peptide hydrogels and hDPSCs into immunocompromised mice revealed blood vessel ingrowth, pulplike tissue formation, and osteodentin deposition suggesting osteogenic/odontogenic differentiation of hDPSCs. Future studies in our research group will focus on the pulp regeneration capacity of hDPSCs and the role of fibroblasts within the pulp extracellular matrix.
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Affiliation(s)
- Ivo Lambrichts
- Laboratory of Morphology, Biomedical Research Institute (BIOMED), Hasselt University, Diepenbeek, Belgium.
| | - Ronald B Driesen
- Laboratory of Morphology, Biomedical Research Institute (BIOMED), Hasselt University, Diepenbeek, Belgium
| | - Yörg Dillen
- Laboratory of Morphology, Biomedical Research Institute (BIOMED), Hasselt University, Diepenbeek, Belgium
| | - Pascal Gervois
- Laboratory of Morphology, Biomedical Research Institute (BIOMED), Hasselt University, Diepenbeek, Belgium
| | - Jessica Ratajczak
- Laboratory of Morphology, Biomedical Research Institute (BIOMED), Hasselt University, Diepenbeek, Belgium
| | - Tim Vangansewinkel
- Laboratory of Morphology, Biomedical Research Institute (BIOMED), Hasselt University, Diepenbeek, Belgium
| | - Esther Wolfs
- Laboratory of Morphology, Biomedical Research Institute (BIOMED), Hasselt University, Diepenbeek, Belgium
| | - Annelies Bronckaers
- Laboratory of Morphology, Biomedical Research Institute (BIOMED), Hasselt University, Diepenbeek, Belgium
| | - Petra Hilkens
- Laboratory of Morphology, Biomedical Research Institute (BIOMED), Hasselt University, Diepenbeek, Belgium
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Hashemi-Beni B, Khoroushi M, Foroughi MR, Karbasi S, Khademi AA. Tissue engineering: Dentin - pulp complex regeneration approaches (A review). Tissue Cell 2017; 49:552-564. [PMID: 28764928 DOI: 10.1016/j.tice.2017.07.002] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 07/06/2017] [Accepted: 07/07/2017] [Indexed: 01/04/2023]
Abstract
Dental pulp is a highly specialized tissue that preserves teeth. It is important to maintain the capabilities of dental pulp before a pulpectomy by creating a local restoration of the dentin-pulp complex from residual dental pulp. The articles identified were selected by two reviewers based on entry and exit criteria. All relevant articles indexed in PubMed, Springer, Science Direct, and Scopus with no limitations from 1961 to 2016 were searched. Factors investigated in the selected articles included the following key words: Dentin-Pulp Complex, Regeneration, Tissue Engineering, Scaffold, Stem Cell, and Growth Factors. Of the 233 abstracts retrieved, the papers which were selected had evaluated the clinical aspects of the application of dentin-pulp regeneration. Generally, this study has introduced a new approach to provoke the regeneration of the dentin-pulp complex after a pulpectomy, so that exogenous growth factors and the scaffold are able to induce cells and blood vessels from the residual dental pulp in the tooth root canal. This study further presents a new strategy for local regeneration therapy of the dentin-pulp complex. This review summarizes the current knowledge of the potential beneficial effects derived from the interaction of dental materials with the dentin-pulp complex as well as potential future developments in this exciting field.
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Affiliation(s)
- Batool Hashemi-Beni
- Torabinejad Dentistry Research Center and Department of Anatomical Sciences and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Maryam Khoroushi
- Dental Materials Research Center and Department of Operative and Art, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohammad Reza Foroughi
- Dental Materials Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran.
| | - Saeed Karbasi
- Department of Biomaterials and Tissue Engineering, School of Advanced Technologies in Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Abbas Ali Khademi
- Torabinejad Dentistry Research Center and Department of Endodonics, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
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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: 82] [Impact Index Per Article: 11.7] [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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17
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Le Clerc J, Tricot-Doleux S, Pellen-Mussi P, Pérard M, Jeanne S, Pérez F. Expression of factors involved in dental pulp physiopathological processes by nemotic human pulpal fibroblasts. Int Endod J 2017; 51 Suppl 2:e94-e106. [DOI: 10.1111/iej.12762] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Accepted: 03/06/2017] [Indexed: 12/16/2022]
Affiliation(s)
- J. Le Clerc
- Faculté d'Odontologie; Equipe Verres et Céramiques; UMR CNRS 6226; Institut des Sciences Chimiques de Rennes, Université de Rennes 1; Rennes France
- Service d'Odontologie Conservatrice et Endodontie; Centre Hospitalier Universitaire; Rennes France
| | - S. Tricot-Doleux
- Faculté d'Odontologie; Equipe Verres et Céramiques; UMR CNRS 6226; Institut des Sciences Chimiques de Rennes, Université de Rennes 1; Rennes France
| | - P. Pellen-Mussi
- Faculté d'Odontologie; Equipe Verres et Céramiques; UMR CNRS 6226; Institut des Sciences Chimiques de Rennes, Université de Rennes 1; Rennes France
| | - M. Pérard
- Faculté d'Odontologie; Equipe Verres et Céramiques; UMR CNRS 6226; Institut des Sciences Chimiques de Rennes, Université de Rennes 1; Rennes France
- Service d'Odontologie Conservatrice et Endodontie; Centre Hospitalier Universitaire; Rennes France
| | - S. Jeanne
- Faculté d'Odontologie; Equipe Verres et Céramiques; UMR CNRS 6226; Institut des Sciences Chimiques de Rennes, Université de Rennes 1; Rennes France
- Service de Parodontologie; Centre Hospitalier Universitaire; Rennes France
| | - F. Pérez
- Service d'Odontologie Conservatrice et Endodontie; Centre Hospitalier Universitaire; Nantes France
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18
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Is Pulp Inflammation a Prerequisite for Pulp Healing and Regeneration? Mediators Inflamm 2015; 2015:347649. [PMID: 26538825 PMCID: PMC4619968 DOI: 10.1155/2015/347649] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 06/05/2015] [Accepted: 07/14/2015] [Indexed: 12/16/2022] Open
Abstract
The importance of inflammation has been underestimated in pulpal healing, and in the past, it has been considered only as an undesirable effect. Associated with moderate inflammation, necrosis includes pyroptosis, apoptosis, and nemosis. There are now evidences that inflammation is a prerequisite for pulp healing, with series of events ahead of regeneration. Immunocompetent cells are recruited in the apical part. They slide along the root and migrate toward the crown. Due to the high alkalinity of the capping agent, pulp cells display mild inflammation, proliferate, and increase in number and size and initiate mineralization. Pulp fibroblasts become odontoblast-like cells producing type I collagen, alkaline phosphatase, and SPARC/osteonectin. Molecules of the SIBLING family, matrix metalloproteinases, and vascular and nerve mediators are also implicated in the formation of a reparative dentinal bridge, osteo/orthodentin closing the pulp exposure. Beneath a calciotraumatic line, a thin layer identified as reactionary dentin underlines the periphery of the pulp chamber. Inflammatory and/or noninflammatory processes contribute to produce a reparative dentinal bridge closing the pulp exposure, with minute canaliculi and large tunnel defects. Depending on the form and severity of the inflammatory and noninflammatory processes, and according to the capping agent, pulp reactions are induced specifically.
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Lourenço Neto N, Marques NCT, Fernandes AP, Rodini CO, Sakai VT, Abdo RCC, Machado MAAM, Santos CF, Oliveira TM. Immunolocalization of dentin matrix protein-1 in human primary teeth treated with different pulp capping materials. J Biomed Mater Res B Appl Biomater 2015; 104:165-9. [PMID: 25678029 DOI: 10.1002/jbm.b.33379] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 11/21/2014] [Accepted: 01/09/2015] [Indexed: 01/25/2023]
Abstract
The aim of this study was to evaluate the immunolocalization of dentin matrix protein (DMP)-1 in human primary teeth treated with different pulp capping materials. Twenty-five primary molars were divided into the following groups: formocresol (FC), calcium hydroxide (CH), mineral trioxide aggregate (MTA), corticosteroid/antibiotic solution + CH (O + CH), and Portland cement (PC), and all received conventional pulpotomy treatment. The teeth at the regular exfoliation period were extracted for histological analysis and immunolocalization of DMP-1. Statistical analysis was performed using the χ(2) test (p < 0.05). Histological analysis revealed statistically significant differences in the comparison among the groups through the use of a score system regarding the presence of hard tissue barrier, odontoblastic layer, and internal resorption, but not regarding pulp calcification. Immunohistochemical analysis showed immunostaining for DMP-1 in groups CH, MTA, O + CH, and PC. Internal resorption was observed in the groups FC and CH. MTA and PC showed pulp repair without inflammation and with the presence of hard tissue barrier. DMP-1 immunostaining was higher for MTA and PC, confirming the reparative and bioinductive capacity of these materials.
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Affiliation(s)
- Natalino Lourenço Neto
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Nádia C T Marques
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Ana Paula Fernandes
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Camila O Rodini
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Vivien T Sakai
- Department of Clinics and Surgery, Federal University of Alfenas, Alfenas, Minas Gerais, Brazil
| | - Ruy Cesar C Abdo
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Maria Aparecida A M Machado
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Carlos F Santos
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Thais M Oliveira
- Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
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Ozeki N, Hase N, Yamaguchi H, Hiyama T, Kawai R, Kondo A, Nakata K, Mogi M. Polyphosphate induces matrix metalloproteinase-3-mediated proliferation of odontoblast-like cells derived from induced pluripotent stem cells. Exp Cell Res 2015; 333:303-315. [PMID: 25662160 DOI: 10.1016/j.yexcr.2015.01.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2014] [Revised: 01/13/2015] [Accepted: 01/16/2015] [Indexed: 12/18/2022]
Abstract
Inorganic polyphosphate [Poly(P)] may represent a physiological source of phosphate and has the ability to induce bone differentiation in osteoblasts. We previously reported that cytokine-induced matrix metalloproteinase (MMP)-3 accelerates the proliferation of purified odontoblast-like cells. In this study, MMP-3 small interfering RNA (siRNA) was transfected into odontoblast-like cells derived from induced pluripotent stem cells to investigate whether MMP-3 activity is induced by Poly(P) and/or is associated with cell proliferation and differentiation into odontoblast-like cells. Treatment with Poly(P) led to an increase in both cell proliferation and additional odontoblastic differentiation. Poly(P)-treated cells showed a small but significant increase in dentin sialophosphoprotein (DSPP) and dentin matrix protein-1 (DMP-1) mRNA expression, which are markers of mature odontoblasts. The cells also acquired additional odontoblast-specific properties including adoption of an odontoblastic phenotype typified by high alkaline phosphatase (ALP) activity and a calcification capacity. In addition, Poly(P) induced expression of MMP-3 mRNA and protein, and increased MMP-3 activity. MMP-3 siRNA-mediated disruption of the expression of these effectors potently suppressed the expression of odontoblastic biomarkers ALP, DSPP, and DMP-1, and blocked calcification. Interestingly, upon siRNA-mediated silencing of MMP-3, we noted a potent and significant decrease in cell proliferation. Using specific siRNAs, we revealed that a unique signaling cascade, Poly(P)→MMP-3→DSPP and/or DMP-1, was intimately involved in the proliferation of odontoblast-like cells.
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Affiliation(s)
- Nobuaki Ozeki
- Department of Endodontics, School of Dentistry, Aichi Gakuin University, 2-11 Suemori-dori, Chikusa-ku, Nagoya, Aichi 464-8651, Japan
| | - Naoko Hase
- Department of Endodontics, School of Dentistry, Aichi Gakuin University, 2-11 Suemori-dori, Chikusa-ku, Nagoya, Aichi 464-8651, Japan
| | - Hideyuki Yamaguchi
- Department of Endodontics, School of Dentistry, Aichi Gakuin University, 2-11 Suemori-dori, Chikusa-ku, Nagoya, Aichi 464-8651, Japan
| | - Taiki Hiyama
- Department of Endodontics, School of Dentistry, Aichi Gakuin University, 2-11 Suemori-dori, Chikusa-ku, Nagoya, Aichi 464-8651, Japan
| | - Rie Kawai
- Department of Endodontics, School of Dentistry, Aichi Gakuin University, 2-11 Suemori-dori, Chikusa-ku, Nagoya, Aichi 464-8651, Japan
| | - Ayami Kondo
- Department of Medicinal Biochemistry, School of Pharmacy, Aichi Gakuin University, 1-100 Kusumoto, Chikusa-ku, Nagoya 464-8650, Japan
| | - Kazuhiko Nakata
- Department of Endodontics, School of Dentistry, Aichi Gakuin University, 2-11 Suemori-dori, Chikusa-ku, Nagoya, Aichi 464-8651, Japan
| | - Makio Mogi
- Department of Medicinal Biochemistry, School of Pharmacy, Aichi Gakuin University, 1-100 Kusumoto, Chikusa-ku, Nagoya 464-8650, Japan.
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RETRACTED: Unique proliferation response in odontoblastic cells derived from human skeletal muscle stem cells by cytokine-induced matrix metalloproteinase-3. Exp Cell Res 2015; 331:105-114. [DOI: 10.1016/j.yexcr.2014.09.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 09/05/2014] [Accepted: 09/11/2014] [Indexed: 11/18/2022]
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RETRACTED: IL-1β-induced, matrix metalloproteinase-3-regulated proliferation of embryonic stem cell-derived odontoblastic cells is mediated by the Wnt5 signaling pathway. Exp Cell Res 2014; 328:69-86. [DOI: 10.1016/j.yexcr.2014.05.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2014] [Revised: 05/08/2014] [Accepted: 05/10/2014] [Indexed: 01/01/2023]
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Ozeki N, Yamaguchi H, Kawai R, Hiyama T, Nakata K, Mogi M, Nakamura H. Cytokines induce MMP-3-regulated proliferation of embryonic stem cell-derived odontoblast-like cells. Oral Dis 2014; 20:505-13. [PMID: 23902456 DOI: 10.1111/odi.12165] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Revised: 07/05/2013] [Accepted: 07/09/2013] [Indexed: 12/22/2022]
Abstract
OBJECTIVES Matrix metalloproteinase (MMP)-3 expression increases after pulpectomy and accelerates angiogenesis in rat dental pulp by an uncharacterised mechanism. Odontoblasts, a major component of dental pulp, could represent a therapeutic target. We investigated whether MMP-3 activity is induced by cytokines and/or is associated with cell proliferation and apoptosis in embryonic stem cell-derived odontoblast-like cells. MATERIALS AND METHODS We used reverse transcriptase polymerase chain reaction, western blotting, an MMP-3 activity assay, a BrdU-cell proliferation enzyme-linked immunosorbent assay and DNA fragmentation analysis to evaluate siRNA-mediated downregulation of MMP-3 expression and activity, and any changes in the proliferative and apoptotic responses associated with this reduced expression. RESULTS Pro-inflammatory cytokines (interleukin-1β, tumour necrosis factor-α and interferon-γ, at relatively low concentrations) induced MMP-3 mRNA and protein expression, and increased MMP-3 activity and cell proliferation, but not apoptosis. MMP-3 silencing produced a potent and significant suppression of cytokine-induced MMP-3 expression and activity, decreased cell proliferation and increased apoptosis. These effects were rescued by application of exogenous MMP-3. CONCLUSIONS Our results suggest that pro-inflammatory cytokines induce MMP-3-regulated cell proliferation and anti-apoptosis effects in odontoblast-like cells derived from embryonic stem cells, in addition to their well-documented destructive role in inflammation.
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Affiliation(s)
- N Ozeki
- Department of Endodontics, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi, Japan
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Riksen EA, Landin MA, Reppe S, Nakamura Y, Lyngstadaas SP, Reseland JE. Enamel matrix derivative promote primary human pulp cell differentiation and mineralization. Int J Mol Sci 2014; 15:7731-49. [PMID: 24857913 PMCID: PMC4057702 DOI: 10.3390/ijms15057731] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 03/26/2014] [Accepted: 04/14/2014] [Indexed: 11/16/2022] Open
Abstract
Enamel matrix derivative (EMD) has been found to induce reactive dentin formation; however the molecular mechanisms involved are unclear. The effect of EMD (5–50 μg/mL) on primary human pulp cells were compared to untreated cells and cells incubated with 10−8 M dexamethasone (DEX) for 1, 2, 3, 7, and 14 days in culture. Expression analysis using Affymetrix microchips demonstrated that 10 μg/mL EMD regulated several hundred genes and stimulated the gene expression of proteins involved in mesenchymal proliferation and differentiation. Both EMD and DEX enhanced the expression of amelogenin (amel), and the dentinogenic markers dentin sialophosphoprotein (DSSP) and dentin matrix acidic phosphoprotein 1 (DMP1), as well as the osteogenic markers osteocalcin (OC, BGLAP) and collagen type 1 (COL1A1). Whereas, only EMD had effect on alkaline phosphatase (ALP) mRNA expression, the stimulatory effect were verified by enhanced secretion of OC and COL1A from EMD treated cells, and increased ALP activity in cell culture medium after EMD treatment. Increased levels of interleukin-6 (IL-6), interleukin-8 (IL-8), and monocyte chemoattractant proteins (MCP-1) in the cell culture medium were also found. Consequently, the suggested effect of EMD is to promote differentiation of pulp cells and increases the potential for pulpal mineralization to favor reactive dentine formation.
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Affiliation(s)
- Elisabeth Aurstad Riksen
- Department of Biomaterials, Institute for Clinical Dentistry, University of Oslo, Blindern, N-0317 Oslo, Norway.
| | - Maria A Landin
- Department of Biomaterials, Institute for Clinical Dentistry, University of Oslo, Blindern, N-0317 Oslo, Norway.
| | - Sjur Reppe
- Department of Medical Biochemistry, Oslo University Hospital, N-0450 Oslo, Norway.
| | - Yukio Nakamura
- Department of Biomaterials, Institute for Clinical Dentistry, University of Oslo, Blindern, N-0317 Oslo, Norway.
| | - Ståle Petter Lyngstadaas
- Department of Biomaterials, Institute for Clinical Dentistry, University of Oslo, Blindern, N-0317 Oslo, Norway.
| | - Janne E Reseland
- Department of Biomaterials, Institute for Clinical Dentistry, University of Oslo, Blindern, N-0317 Oslo, Norway.
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Abstract
Emerging understanding about interactions between stem cells, scaffolds, and morphogenic factors has accelerated translational research in the field of dental pulp tissue engineering. Dental pulp stem cells constitute a subpopulation of cells endowed with self-renewal and multipotency. Dental pulp stem cells seeded in biodegradable scaffolds and exposed to dentin-derived morphogenic factors give rise to a pulplike tissue capable of generating new dentin. Notably, dentin-derived proteins are sufficient to induce dental pulp stem cell differentiation into odontoblasts. Ongoing work is focused on developing ways of mobilizing dentin-derived proteins and disinfecting the root canal of necrotic teeth without compromising the morphogenic potential of these signaling molecules. On the other hand, dentin by itself does not appear to be capable of inducing endothelial differentiation of dental pulp stem cells despite the well-known presence of angiogenic factors in dentin. This is particularly relevant in the context of dental pulp tissue engineering in full root canals in which access to blood supply is limited to the apical foramina. To address this challenge, scientists are looking at ways to use the scaffold as a controlled-release device for angiogenic factors. The aim of this article was to present and discuss current strategies to functionalize injectable scaffolds and customize them for dental pulp tissue engineering. The long-term goal of this work is to develop stem cell-based therapies that enable the engineering of functional dental pulps capable of generating new tubular dentin in humans.
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Affiliation(s)
- Evandro Piva
- Department of Operative Dentistry, School of Dentistry, Federal University of Pelotas, Pelotas, RS, Brazil; Department of Cariology, Restorative Sciences, Endodontics, University of Michigan School of Dentistry, Ann Arbor, Michigan
| | - Adriana F Silva
- Department of Operative Dentistry, School of Dentistry, Federal University of Pelotas, Pelotas, RS, Brazil; Department of Cariology, Restorative Sciences, Endodontics, University of Michigan School of Dentistry, Ann Arbor, Michigan
| | - Jacques E Nör
- Department of Cariology, Restorative Sciences, Endodontics, University of Michigan School of Dentistry, Ann Arbor, Michigan; Department of Biomedical Engineering, University of Michigan College of Engineering, Ann Arbor, Michigan; Department of Otolaryngology, University of Michigan School of Medicine, Ann Arbor, Michigan.
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Hiyama T, Ozeki N, Mogi M, Yamaguchi H, Kawai R, Nakata K, Kondo A, Nakamura H. Matrix metalloproteinase-3 in odontoblastic cells derived from ips cells: unique proliferation response as odontoblastic cells derived from ES cells. PLoS One 2013; 8:e83563. [PMID: 24358294 PMCID: PMC3865184 DOI: 10.1371/journal.pone.0083563] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Accepted: 11/13/2013] [Indexed: 12/20/2022] Open
Abstract
We previously reported that matrix metalloproteinase (MMP)-3 accelerates wound healing following dental pulp injury. In addition, we reported that a proinflammatory cytokine mixture (tumor necrosis factor-α, interleukin (IL)-1β and interferon-γ) induced MMP-3 activity in odontoblast-like cells derived from mouse embryonic stem (ES) cells, suggesting that MMP-3 plays a potential unique physiological role in wound healing and regeneration of dental pulp in odontoblast-like cells. In this study, we tested the hypothesis that upregulation of MMP-3 activity by IL-1β promotes proliferation and apoptosis of purified odontoblast-like cells derived from induced pluripotent stem (iPS) and ES cells. Each odontoblast-like cell was isolated and incubated with different concentrations of IL-1β. MMP-3 mRNA and protein expression were assessed using RT-PCR and western blotting, respectively. MMP-3 activity was measured using immunoprecipitation and a fluorescence substrate. Cell proliferation and apoptosis were determined using ELISA for BrdU and DNA fragmentation, respectively. siRNA was used to reduce MMP-3 transcripts in these cells. Treatment with IL-1β increased MMP-3 mRNA and protein levels, and MMP-3 activity in odontoblast-like cells. Cell proliferation was found to markedly increase with no changes in apoptosis. Endogenous tissue inhibitor of metalloproteinase (TIMP)-1 and TIMP-2 were constitutively expressed during all experiments. The exocytosis inhibitor, Exo1, potently suppressed the appearance of MMP-3 in the conditioned medium. Treatment with siRNA against MMP-3 suppressed an IL-1β-induced increase in MMP-3 expression and activity, and also suppressed cell proliferation, but unexpectedly increased apoptosis in these cells (P<0.05). Exogenous MMP-3 was found to induce cell proliferation in odontoblast-like cells derived from iPS cells and ES cells. This siRNA-mediated increase in apoptosis could be reversed with exogenous MMP-3 stimulation (P<0.05). Taken together, IL-1β induced MMP-3-regulated cell proliferation and suppressed apoptosis in odontoblast-like cells derived from iPS and ES cells.
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Affiliation(s)
- Taiki Hiyama
- Department of Endodontics, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi, Japan
| | - Nobuaki Ozeki
- Department of Endodontics, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi, Japan
- * E-mail:
| | - Makio Mogi
- Department of Medicinal Biochemistry, School of Pharmacy, Aichi Gakuin University, Nagoya, Aichi, Japan
| | - Hideyuki Yamaguchi
- Department of Endodontics, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi, Japan
| | - Rie Kawai
- Department of Endodontics, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi, Japan
| | - Kazuhiko Nakata
- Department of Endodontics, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi, Japan
| | - Ayami Kondo
- Department of Medicinal Biochemistry, School of Pharmacy, Aichi Gakuin University, Nagoya, Aichi, Japan
| | - Hiroshi Nakamura
- Department of Endodontics, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi, Japan
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Sipert CR, Morandini ACDF, Modena KCDS, Dionísio TJ, Machado MAAM, Oliveira SHPD, Campanelli AP, Santos CF. CCL3 and CXCL12 production in vitro by dental pulp fibroblasts from permanent and deciduous teeth stimulated by Porphyromonas gingivalis LPS. J Appl Oral Sci 2013; 21:99-105. [PMID: 23739851 PMCID: PMC3881878 DOI: 10.1590/1678-7757201300004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Accepted: 03/06/2013] [Indexed: 01/25/2023] Open
Abstract
OBJECTIVE The aim of this study was to compare the production of the chemokines CCL3 and CXCL12 by cultured dental pulp fibroblasts from permanent (PDPF) and deciduous (DDPF) teeth under stimulation by Porphyromonas gingivalis LPS (PgLPS). MATERIAL AND METHODS Primary culture of fibroblasts from permanent (n=3) and deciduous (n=2) teeth were established using an explant technique. After the fourth passage, fibroblasts were stimulated by increasing concentrations of PgLPS (0-10 µg/mL) at 1, 6 and 24 h. The cells were tested for viability through MTT assay, and production of the chemokines CCL3 and CXCL12 was determined through ELISA. Comparisons among samples were performed using One-way ANOVA for MTT assay and Two-way ANOVA for ELISA results. RESULTS Cell viability was not affected by the antigen after 24 h of stimulation. PgLPS induced the production of CCL3 by dental pulp fibroblasts at similar levels for both permanent and deciduous pulp fibroblasts. Production of CXCL12, however, was significantly higher for PDPF than DDPF at 1 and 6 h. PgLPS, in turn, downregulated the production of CXCL12 by PDPF but not by DDPF. CONCLUSION These data suggest that dental pulp fibroblasts from permanent and deciduous teeth may present a differential behavior under PgLPS stimulation.
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Affiliation(s)
- Carla Renata Sipert
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
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Abd-Elmeguid A, Abdeldayem M, Kline LW, Moqbel R, Vliagoftis H, Yu DC. Osteocalcin Expression in Pulp Inflammation. J Endod 2013; 39:865-72. [DOI: 10.1016/j.joen.2012.12.035] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Revised: 12/27/2012] [Accepted: 12/30/2012] [Indexed: 12/13/2022]
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