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Monteiro MM, Amorim Dos Santos J, Paiva Barbosa V, Rezende TMB, Guerra ENS. Photobiomodulation effects on fibroblasts and keratinocytes after ionizing radiation and bacterial stimulus. Arch Oral Biol 2024; 159:105874. [PMID: 38147800 DOI: 10.1016/j.archoralbio.2023.105874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 12/02/2023] [Accepted: 12/13/2023] [Indexed: 12/28/2023]
Abstract
OBJECTIVE Photobiomodulation therapy (PBMT) has proven to reduce inflammation and pain and increase wound healing. Thus, the aim of this study was to analyze the effects of PBMT parameters on migration, proliferation, and gene expression after ionizing radiation and bacterial-induced stress in an in vitro study. DESIGN Keratinocytes (HaCaT) and Fibroblasts (HGFs) were grown in DMEM with 10 % fetal bovine serum until stressful condition induction with lipopolysaccharide (LPS) of Escherichia coli (1 µg/mL), Porphyromonas gingivalis protein extract (5 µg/mL) and ionizing radiation (8 Gy). Low-laser irradiation (660 nm, 30 mW) was carried out in four sessions, with 6 h intervals, and energy density of 2, 3, 4, and 5 J/cm². Scratch assays, immunofluorescence, and RT-qPCR were performed. RESULTS Treated fibroblasts and keratinocytes showed significant response in proliferation and migration after scratch assays (p < 0.05). Higher expressions of α-SMA in fibroblasts and F-actin in keratinocytes were observed in cells subjected to 3 J/cm². PI3K-pathway genes expression tended to enhance in fibroblasts, presenting a higher relative expression when compared to keratinocytes. In keratinocytes, PBMT groups demonstrated deregulated expression for all inflammatory cytokines' genes tested while fibroblasts presented a tendency to enhance those genes expression in a dose dependent way. CONCLUSIONS The present study showed that delivering 660 nm, 30 mW was effective to stimulate cell migration, proliferation and to accelerate wound healing. PBMT can modulate cytokines and pathways involved in wound repair. The different energy densities delivering distinct responses in vitro highlights that understanding laser parameters is fundamental to improve treatment strategies.
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Affiliation(s)
- Mylene Martins Monteiro
- University of Brasília, Brasília, Laboratory of Oral Histopathology, Health Sciences Faculty, Brazil
| | - Juliana Amorim Dos Santos
- University of Brasília, Brasília, Laboratory of Oral Histopathology, Health Sciences Faculty, Brazil
| | - Victor Paiva Barbosa
- University of Brasília, Brasília, Laboratory of Oral Histopathology, Health Sciences Faculty, Brazil
| | - Taia Maria Berto Rezende
- University of Brasília, Brasília, Laboratory of Oral Histopathology, Health Sciences Faculty, Brazil
| | - Eliete Neves Silva Guerra
- University of Brasília, Brasília, Laboratory of Oral Histopathology, Health Sciences Faculty, Brazil.
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de Farias JO, da Costa Sousa MG, Martins DCM, de Oliveira MA, Takahashi I, de Sousa LB, da Silva IGM, Corrêa JR, Silva Carvalho AÉ, Saldanha-Araújo F, Rezende TMB. Senescence on Dental Pulp Cells: Effects on Morphology, Migration, Proliferation, and Immune Response. J Endod 2024; 50:362-369. [PMID: 38211820 DOI: 10.1016/j.joen.2023.12.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 12/29/2023] [Accepted: 12/30/2023] [Indexed: 01/13/2024]
Abstract
INTRODUCTION Evidence indicates that senescence can affect essential dental pulp functions, such as defense capacity and repair, consequently affecting the successes of conservative endodontic treatments. This study aims to evaluate the effects of senescence on the morphology, migration, proliferation, and immune response of human dental pulp cells. METHODS Cells were treated with doxorubicin to induce senescence, confirmed by β-galactosidase staining. Morphological changes, cellular proliferation, and migration were evaluated by scanning electron microscopy, trypan blue cells, and the scratch method, respectively. Modifications in the immune response were evaluated by measuring the genes for pro-inflammatory cytokines tumor necrosis factor alpha and interleukin (IL)-6 and anti-inflammatory cytokines transforming growth factor beta 1 and IL-10 using the real time polymerase chain reaction assay. RESULTS An increase in cell size and a decrease in the number of extensions were observed in senescent cells. A reduction in the proliferative and migratory capacity was also found in senescent cells. In addition, there was an increase in the gene expression of inflammatory cytokines tumor necrosis factor alpha and IL-6 and a decrease in the gene expression of IL-10 and transforming growth factor beta-1, suggesting an exacerbated inflammatory situation associated with immunosuppression. CONCLUSIONS Cellular senescence is possibly a condition that affects prognoses of conservative endodontic treatments, as it affects primordial cellular functions related to this treatment.
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Affiliation(s)
- Jade Ormondes de Farias
- Pós-graduação em Ciências da Saúde, Faculdade de Ciências de Saúde, Universidade de Brasília, Brasília, Brazil
| | - Maurício Gonçalves da Costa Sousa
- Division of Biomaterials and Biomechanics, Department of Restorative, Dentistry, School of Dentistry, Oregon Health & Science University, Portland Oregon; Knigth Cancer Precision Biofabrication Hub, Knigth Cancer Institute, Oregon, Health and Science University, Portland, Oregon; Cancer Early Detection Advanced Research Center, Oregon Health Science, University, Portland, Oregon
| | - Danilo César Mota Martins
- Pós-graduação em Ciências da Saúde, Faculdade de Ciências de Saúde, Universidade de Brasília, Brasília, Brazil
| | - Mayara Alves de Oliveira
- Pós-graduação em Ciências da Saúde, Faculdade de Ciências de Saúde, Universidade de Brasília, Brasília, Brazil
| | - Isadora Takahashi
- Pós-graduação em Ciências da Saúde, Faculdade de Ciências de Saúde, Universidade de Brasília, Brasília, Brazil
| | - Larissa Barbosa de Sousa
- Pós-graduação em Ciências da Saúde, Faculdade de Ciências de Saúde, Universidade de Brasília, Brasília, Brazil
| | | | - José Raimundo Corrêa
- Laboratório de Microscopia e Microanálise, Instituto de Ciências Biológicas, Universidade de Brasília, Brasília, Brazil
| | - Amandda Évelin Silva Carvalho
- Laboratório de Hematologia e Células-tronco, Faculdade de Ciências da Saúde, Universidade de Brasília, Brasília, Brazil
| | - Felipe Saldanha-Araújo
- Laboratório de Hematologia e Células-tronco, Faculdade de Ciências da Saúde, Universidade de Brasília, Brasília, Brazil
| | - Taia Maria Berto Rezende
- Pós-graduação em Ciências da Saúde, Faculdade de Ciências de Saúde, Universidade de Brasília, Brasília, Brazil; Pós-graduação em Ciências Genômicas e Biotecnologia, Universidade Católica, de Brasília, Brasília, Brazil; Departamento de Odontologia, Faculdade de Ciências de Saúde, Universidade, Brasília, Brazil; Pós-graduação em Odontologia, Faculdade de Ciências de Saúde, Universidade de Brasília, Brasília, Brazil.
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Ribeiro VMDS, Sousa MGDC, Garcia PR, Santos LSD, Duarte ECB, Corrêa JR, Labate CA, Cataldi TR, da Costa RA, Ramada MHS, de Carvalho JL, Rezende TMB. Histologic and proteomic profile of two methods to decellularize human dental pulp tissue. Arch Oral Biol 2024; 157:105847. [PMID: 38000129 DOI: 10.1016/j.archoralbio.2023.105847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 10/16/2023] [Accepted: 11/07/2023] [Indexed: 11/26/2023]
Abstract
OBJECTIVE The present study compared the structural and proteomic architecture of extracellular matrices (ECM) of decellularized human dental pulp using two previously described protocols. DESIGN Pulp tissue from 150 molars was extracted and three treatments took place, based on the Matoug-Elwerfelli Group (MG) and the Song Group (SG) protocols and an untreated pulp group (CG), to examine histoarchitecture and the effectiveness of the decellularization process, using histological analysis (n = 12) and scanning electron microscopy (SEM) (n = 3). Protein extraction took place using 100 mg dry weight of pulp, in triplicates for each group, and the shotgun proteome analysis was performed by nanoUPLC-MSE. Proteins were identified using the revised human UNIPROT database attached to the PLGS search engine. RESULTS Histological analysis and SEM demonstrated that ECM in MG was more preserved. Proteome analysis showed that the decellularized process in MG maintained approximately 69.56% of proteins identified in untreated pulp tissue while SG maintained 28.26%. CONCLUSIONS ECM appears to be suitable as a potential biological scaffold for pulp revascularization and regeneration procedures, especially those processed according to the Matoug-Elwerfelli protocol. This finding can collaborate to enhance clinical solutions for young permanent teeth that have suffered necrosis.
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Affiliation(s)
| | - Maurício Gonçalves da Costa Sousa
- Knight Cancer Precision Biofabrication Hub, Knight Cancer Institute, Oregon Health and Science University, Portland, OR, United States; Cancer Early Detection Advanced Research Center, Oregon Health and Science University, Portland, OR, United States; Division of Biomaterials and Biomechanics, Department of Restorative Dentistry, School of Dentistry, Oregon Health & Science University, Portland, OR, United States
| | - Paula Ribeiro Garcia
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil; Departamento de Clínica Odontológica, Universidade Federal de Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil
| | - Lucas Souza Dos Santos
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil
| | | | - José Raimundo Corrêa
- Decanato de Ensino de Graduação, Universidade de Brasília, Brasília, Distrito Federal, Brazil
| | - Carlos Alberto Labate
- Laboratório Max Feffer de Genética de Plantas, Departamento de Genética, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Piracicaba, Brazil
| | - Thaís Regiani Cataldi
- Laboratório Max Feffer de Genética de Plantas, Departamento de Genética, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Piracicaba, Brazil
| | - Rosiane Andrade da Costa
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil
| | - Marcelo Henrique Soller Ramada
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil
| | - Juliana Lott de Carvalho
- Curso de Medicina, Universidade de Brasília, Brasília, Distrito Federal, Brazil; Programa de Pós-Graduação em Ciências da Saúde, Universidade de Brasília, Brasília, Distrito Federal, Brazil
| | - Taia Maria Berto Rezende
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil; Programa de Pós-Graduação em Ciências da Saúde, Universidade de Brasília, Brasília, Distrito Federal, Brazil; Departamento de Odontologia, Universidade de Brasília, Brasília, Distrito Federal, Brazil; Programa de Pós-Graduação em Odontologia, Universidade de Brasília, Brasília, Distrito Federal, Brazil.
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Silva PAO, Martins DCM, de Castro Cantuária AP, de Andrade RV, Lacorte C, de Almeida JA, Aguiar LR, Corrêa JR, da Silva IGM, Franco OL, Rezende TMB. Host defense peptides combined with MTA extract increase the repair in dental pulp cells: in vitro and ex vivo study. Sci Rep 2023; 13:9531. [PMID: 37308525 DOI: 10.1038/s41598-023-36748-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 06/09/2023] [Indexed: 06/14/2023] Open
Abstract
Host Defense Peptides (HDPs) have, in previous studies, been demonstrating antimicrobial, anti-inflammatory, and immunomodulatory capacity, important factors in the repair process. Knowing these characteristics, this article aims to evaluate the potential of HDPs IDR1018 and DJK-6 associated with MTA extract in the repair process of human pulp cells. Antibacterial activity of HDPs, MTA and HDPs combined with MTA in Streptococcus mutans planktonic bacteria and antibiofilm activity was evaluated. Cell toxicity was assayed with MTT and cell morphology was observed by scanning electron microscopy (SEM). Proliferation and migration of pulp cells were evaluated by trypan blue and wound healing assay. Inflammatory and mineralization related genes were evaluated by qPCR (IL-6, TNFRSF, DSPP, TGF-β). Alkaline phosphatase, phosphate quantification and alizarin red staining were also verified. The assays were performed in technical and biological triplicate (n = 9). Results were submitted for the calculation of the mean and standard deviation. Then, normality verification by Kolmogorov Smirnov test, analyzing one-way ANOVA. Analyses were considered at a 95% significance level, with a p-value < 0.05. Our study demonstrated that HDPs combined with MTA were able to reduce biofilms performed in 24 h and biofilm performed over 7 days S. mutans biofilm (p < 0.05). IDR1018 and MTA, as well as their combination, down-regulated IL-6 expression (p < 0.05). Tested materials were not cytotoxic to pulp cells. IDR1018 induced high cell proliferation and combined with MTA induced high cellular migration rates in 48 h (p < 0.05). Furthermore, the combination of IDR1018 and MTA also induced high expression levels of DSPP, ALP activity, and the production of calcification nodules. So, IDR-1018 and its combination with MTA could assist in pulp-dentine complex repair process in vitro.
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Affiliation(s)
| | - Danilo César Mota Martins
- Programa de Pós-Graduação em Ciências da Saúde, Universidade de Brasília, Brasília, Distrito Federal, Brazil
| | | | - Rosangela V de Andrade
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, SGAN 916N - Av. W5 - Campus II - Modulo C, Room C-22170.790-160, Brasília, Distrito Federal, Brazil
| | - Cristiano Lacorte
- Laboratório de Biologia Sintética, Embrapa Recursos Genéticos e Biotecnologia, Brasília, Distrito Federal, Brazil
| | - Jeeser Alves de Almeida
- Curso de Educação Física, Universidade Federal de Mato Grosso do Sul, UFMS, Campo Grande, Mato Grosso do Sul, Brazil
| | - Lana Ribeiro Aguiar
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, SGAN 916N - Av. W5 - Campus II - Modulo C, Room C-22170.790-160, Brasília, Distrito Federal, Brazil
| | - José Raimundo Corrêa
- Laboratório de Microscopia e Microanálises, Instituto de Ciências Biológicas, Universidade de Brasília, Brasília, Distrito Federal, Brazil
| | - Ingrid Gracielle Martins da Silva
- Laboratório de Microscopia e Microanálises, Instituto de Ciências Biológicas, Universidade de Brasília, Brasília, Distrito Federal, Brazil
| | - Octávio Luiz Franco
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, SGAN 916N - Av. W5 - Campus II - Modulo C, Room C-22170.790-160, Brasília, Distrito Federal, Brazil
- S-Inova Biotech, Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, Mato Grosso do Sul, Brazil
| | - Taia Maria Berto Rezende
- Programa de Pós-Graduação em Ciências da Saúde, Universidade de Brasília, Brasília, Distrito Federal, Brazil.
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, SGAN 916N - Av. W5 - Campus II - Modulo C, Room C-22170.790-160, Brasília, Distrito Federal, Brazil.
- Curso de Odontologia, Universidade de Brasília, Brasília, Distrito Federal, Brazil.
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de Farias JO, Rezende TMB. Dental pulp and apical papilla cells senescence: causes, consequences, and prevention. Biogerontology 2023:10.1007/s10522-023-10029-y. [PMID: 37010664 DOI: 10.1007/s10522-023-10029-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Accepted: 03/07/2023] [Indexed: 04/04/2023]
Abstract
Dental pulp under physiological conditions has a defense function, repair capacity, and important mechanisms in pathological processes. In addition, the dental papilla is involved in important defense processes and an essential function in the pulp revascularization process. It is known that dental pulp and apical papilla undergo a natural aging process, in addition to stressful situations such as bruxism, inflammation, and infections. Both aging and stressful situations can lead to cellular senescence. Some evidence indicates that the changes resulting from this cellular state can directly affect the efficiency of cells in these tissues and affect conservative and regenerative clinical treatments. Thus, it is necessary to understand the causes and consequences of cellular senescence in addition to the development of methods for senescence prevention. This review aims to provide an overview of possible causes and consequences of senescence in dental pulp and stem cells from apical papilla and discusses possible methods to prevent this cellular state.
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Affiliation(s)
- Jade Ormondes de Farias
- Pós-graduação em Ciências da Saúde, Faculdade de Ciências de Saúde, Universidade de Brasília, Campus Darcy Ribeiro s/n - Asa Norte, Brasília, DF, Brazil
| | - Taia Maria Berto Rezende
- Pós-graduação em Ciências da Saúde, Faculdade de Ciências de Saúde, Universidade de Brasília, Campus Darcy Ribeiro s/n - Asa Norte, Brasília, DF, Brazil.
- Curso de Odontologia, Universidade Católica de Brasília, QS 07 Lote 01, Brasília, DF, Brazil.
- Pós-graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, SHAN 916 Módulo B Avenida W5 - Asa Norte, Campus II - Modulo C, Room C - 221, Brasília, DF, 70.790-160, Brazil.
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Nogueira ME, Sousa Neto IV, Motta-Santos D, Cantuária APDC, Lima SMDF, Rezende TMB, Santana HADP, Petriz BA, Marqueti RDC, Almeida JA. High-protein diet associated with resistance training reduces cardiac TNF-α levels and up-regulates MMP-2 activity in rats. Arch Physiol Biochem 2022; 128:1630-1636. [PMID: 32686511 DOI: 10.1080/13813455.2020.1787456] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The consumption of high-protein diets (HPD) is associated with resistance training (RT) due to effects on metabolism. However, little is known about these effects on cardiac tissue. This study aimed to investigate effects of HPD and RT on cardiac biomarkers. 18 rats were divided into normo-protein (NPD), and HPD groups: NPD-Control, NPD-RT, HPD-Control, and HPD-RT. Interleukin-6 (IL-6), tumour necrosis factor alpha (TNF-a), nitric oxide (NO), activity of metalloproteinase-2 (MMP-2), and vascular factor (VEGF) were analysed. RT was effective in regulating body weight, increasing strength, and reducing food consumption (p < .05). HPD induces higher levels of interleukin 6 (p = .0169), and lowers NO (p < .0001). When associated with RT, the HPD decreases levels of tumour necrosis factor alpha, while enhances NO, and MMP activity (p < .05). The association of RT with HDP decreases inflammatory parameters and indicates an enhancement in the molecular parameters of cardiac tissue.
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Affiliation(s)
- Murilo Esteves Nogueira
- Graduate Program in Health and Development in the Midwest Region, Faculty of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - Ivo Vieira Sousa Neto
- Graduate Program of Sciences and Technology of Health, University of Brasilia, Distrito Federal, Brazil
| | - Daisy Motta-Santos
- Sports Science Postgraduate Program, Sports Department, EEFFTO, UFMG, Belo Horizonte, Brazil
| | - Ana Paula de Castro Cantuária
- Graduate Program in Genomics Science and Biotechnology, Catholic University of Brasilia, Brasília, Brazil
- Post graduation of Health Sciences, University of Brasilia, Distrito Federal, Brazil
| | - Stella Maris de Freitas Lima
- Graduate Program in Genomics Science and Biotechnology, Catholic University of Brasilia, Brasília, Brazil
- Dental course, Catholic University of Brasilia, Brasília, Brazil
| | - Taia Maria Berto Rezende
- Graduate Program in Genomics Science and Biotechnology, Catholic University of Brasilia, Brasília, Brazil
- Post graduation of Health Sciences, University of Brasilia, Distrito Federal, Brazil
- Dental course, Catholic University of Brasilia, Brasília, Brazil
| | - Hugo Alexandre de Paula Santana
- Research in Exercise and Nutrition in Health and Sports Performance - PENSARE, Graduate Program in Movement Sciences, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - Bernardo Assis Petriz
- Graduate Program in Genomics Science and Biotechnology, Catholic University of Brasilia, Brasília, Brazil
- Laboratory of Molecular Exercise Physiology, University Center - UDF, Brasília, Brazil
- Graduate Program in Health Promotion, University of Franca - UNIFRAN, Franca, Brazil
| | - Rita de Cássia Marqueti
- Graduate Program of Sciences and Technology of Health, University of Brasilia, Distrito Federal, Brazil
- Graduate Program of Rehabilitation Sciences, University of Brasilia, Distrito Federal, Brazil
| | - Jeeser Alves Almeida
- Graduate Program in Health and Development in the Midwest Region, Faculty of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
- Research in Exercise and Nutrition in Health and Sports Performance - PENSARE, Graduate Program in Movement Sciences, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
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Farias JOD, Santo JDADE, Amorim IA, Rezende TMB. Triclosan antimicrobial activity against dental-caries-related bacteria. Braz J Oral Sci 2022. [DOI: 10.20396/bjos.v22i00.8668076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Triclosan (TCS) is a chlorinated diphenyl ether and a possible active agent against microorganisms. Due to its probability of reducing dental plaque accumulation, TCS can be added as a substance for oral hygiene. Aim: To evaluate the efficacy and antimicrobial capacity of TCS against Pseudomonas aeruginosa and Streptococcus mutans. Methods: This work evaluates the percentage of bacteria inhibition of P. aeruginosa (ATCC 27853) and S. mutans (ATCC 25175). TCS concentrations between 2 and 128 μg.mL-1 were tested. Results: An inhibitory potential of TCS was found against S. mutans. No percentage of inhibition was detected against P. aeruginosa (technical and biological triplicate). Conclusion: TCS, an antimicrobial agent used in dentifrices, can reduce S. mutans levels therefore these dentifrices should be indicated for patients with a high risk of caries. However, further study is needed, including antimicrobial analyses against other microbial conditions.
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Araújo RO, Leite ML, Dutra TTB, Brito da Cunha N, Rezende TMB, Ramada MHS, Dias SC. Evaluation of the biotechnological potential of peptide Cupiennin 1a and analogs. Front Microbiol 2022; 13:850007. [PMID: 36060778 PMCID: PMC9433906 DOI: 10.3389/fmicb.2022.850007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 07/13/2022] [Indexed: 11/13/2022] Open
Abstract
Antimicrobial peptides (AMPs) are components in the innate immune system of various organisms, and many AMPs can be found in poisons from animals such as spiders, scorpions, and snakes. The peptide Cupiennin-1a is present in the venom of the spider Cupiennius salei and belongs to a group of peptides called cupiennins. The peptide demonstrated high cytotoxic activity against mammalian cells; thus, aiming to solve this problem, seven analogs were designed (R1a, R1b, R2b, R3b, R6b, R8b, and R10b) based on the primary structure of the peptide Cupiennin 1a, reducing its size and substituting some amino acid residues. The antimicrobial results showed that all Cupiennin 1a analogs displayed antimicrobial activity against the tested bacterial and fungal strains. Cytotoxicity tests demonstrated a decrease in the cytotoxic effect of the analogs when compared to the peptide Cupiennin-1a. The antitumor activity against breast adenocarcinoma lines was observed for all the peptides, displaying a better effect against the MCF-7 and MDAMB-231 cell lines. The eight peptides have insecticidal potential, and the original peptide and analogs R6b, R8b, and R10b showed better efficiency even at low concentrations. The rational design of the analogs led to new molecules displaying activities against different cell types and reduced cytotoxicity toward healthy mammalian cells when compared to the original peptide, demonstrating that this was an interesting approach for the development of molecules with biotechnological potential.
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Affiliation(s)
- Rayssa Oliveira Araújo
- Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil
| | - Michel Lopes Leite
- Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil
| | - Thais Tavares Baraviera Dutra
- Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil
| | - Nicolau Brito da Cunha
- Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil
- Faculdade de Agronomia e Medicina Veterinária, Universidade de Brasília - UnB, Brasília, Brazil
| | - Taia Maria Berto Rezende
- Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil
- Pós-Graduação em Ciências da Saúde, Universidade de Brasília, Brasília, Brazil
- *Correspondence: Taia Maria Berto Rezende,
| | - Marcelo Henrique Soller Ramada
- Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil
- Programa de Pós-Graduação em Gerontologia, Universidade Católica de Brasília, Brasília, Brazil
| | - Simoni Campos Dias
- Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil
- Pós-Graduação ao em Biologia Animal, Campus Universitário Darcy Ribeiro, Universidade de Brasília, Brasília, Brazil
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Ormondes de Farias J, Resende Ferreira AC, Cardoso Kostopoulos AG, Berto Rezende TM, Dias SC. Synergistic activity and immunomodulatory potential of levofloxacin and Synoeca-MP peptide against multi-resistant strains of Klebsiella pneumoniae. Microb Pathog 2022; 163:105403. [PMID: 35033636 DOI: 10.1016/j.micpath.2022.105403] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 01/09/2022] [Accepted: 01/11/2022] [Indexed: 11/30/2022]
Abstract
The purpose of this article is to study the isolated and combined effect of the peptides Synoeca-MP and IDR-1018 against multi-resistant clinical isolates of K. pneumoniae (Kp2177569 - LACEN) in vitro. The bactericidal activity of the peptide Synoeca-MP in combination with three different classes of commercial antimicrobials and its immunomodulatory potential was also evaluated. Synoeca-MP showed better antimicrobial activity than IDR-1018 and presented synergistic action combined with levofloxacin. Therefore, Synoeca-MP and levofloxacin, and the combination of both, were used in subsequent analyses. In the presence of heat-killed antigens, cellular viability and TNF-α levels was maintained, the production of NO increased and a reduction in IL-10 production was observed. The synergistic antibacterial effect between Synoeca-MP and levofloxacin was effective against multidrug-resistant strains of K. pneumoniae. The association of Synoeca-MP and levofloxacin may present a low modulating action of pro and anti-inflammatory mediators, based on these results.
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Affiliation(s)
- Jade Ormondes de Farias
- Pós-graduação em Ciências da Saúde, Faculdade de Ciências de Saúde, Universidade de Brasília, Campus Darcy Ribeiro s/n - Asa Norte, Brasília, DF, Brazil
| | - Arthur Corrêa Resende Ferreira
- Pós-graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, SHAN 916 Módulo B Avenida W5 - Asa Norte, Brasília, DF, Brazil
| | | | - Taia Maria Berto Rezende
- Pós-graduação em Ciências da Saúde, Faculdade de Ciências de Saúde, Universidade de Brasília, Campus Darcy Ribeiro s/n - Asa Norte, Brasília, DF, Brazil; Pós-graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, SHAN 916 Módulo B Avenida W5 - Asa Norte, Brasília, DF, Brazil; Curso de Odontologia, Universidade Católica de Brasília, QS 07 Lote 01, Brasília, DF, Brazil.
| | - Simoni Campos Dias
- Pós-graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, SHAN 916 Módulo B Avenida W5 - Asa Norte, Brasília, DF, Brazil; Pós-graduação em Biologia Animal, Instituto de Biologia, Universidade de Brasília, Campus Darcy Ribeiro s/n - Asa Norte, Brasília, DF, Brazil
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10
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Silva PAO, Lima SMDF, Martins DCM, Amorim IA, Lacorte C, de Almeida JA, Franco OL, Rezende TMB. Concentrated MTA Repair HP reduced biofilm and can cause reparative action at a distance. Int Endod J 2021; 54:1925-1936. [PMID: 34164821 DOI: 10.1111/iej.13592] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 06/21/2021] [Accepted: 06/22/2021] [Indexed: 12/31/2022]
Abstract
AIM To evaluate in vitro whether MTA Repair HP can induce repair processes at a distance, including its effects on biofilm, cell viability, migration, production of TGF-β, phosphate and ALP, evaluated through MTA diluted extracts. METHODOLOGY Initially, antibacterial tests were performed with the bacterium Streptococcus mutans (ATCC 25175) in the presence of MTA extracts (dilutions of 1:1, 1:2 and 1:4). Growth inhibition assay by microdilution in broth, antibiofilm plate assay of young biofilm and antibiofilm assay in confocal microscopy of mature biofilm were carried out. Then, pulp cells were stimulated in the presence of several MTA dilutions, and cell viability (MTT assay), proliferation and migration capacity (scratch assay) were evaluated. To evaluate the capacity of 1:1, 1:2 and 1:4 dilutions of MTA Repair HP to promote the production of important agents of odontogenic differentiation and mineralization, ALP activity, TGF-β secretion and phosphate quantification were measured. Statistical differences were verified using one-way and two-way anova and Tukey's post-tests. RESULTS The test dilutions of MTA Repair HP did not inhibit planktonic S. mutans growth but were able to reduce young and mature S. mutans biofilm (p < 0.001). In addition, none of the MTA Repair HP dilutions was cytotoxic for pulp cells. The 1:2 and 1:4 dilutions of MTA Repair HP induced migration and proliferation of pulp cells (p < 0.05). ALP activity and TGF-β secretion were independent of the tested dilution (p < 0.001). Diluted 1:4 MTA Repair HP produced less phosphate than the more concentrated 1:1 and 1:2 MTA dilutions (p < 0.001). CONCLUSIONS Undiluted MTA Repair HP reduced S. mutans biofilm, when compared to 1:2 and 1:4 MTA dilutions. Furthermore, none of the tested dilutions was cytotoxic to pulp cells. MTA Repair HP promoted cell migration and proliferation at a distance, assessed through the dilution of the MTA. Even from a distance, MTA Repair HP has the ability to participate in some events related to repair, such as migration, proliferation and TGF production.
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Affiliation(s)
| | - Stella Maris de Freitas Lima
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil.,Curso de Odontologia, Universidade Católica de Brasília, Brasília, Brazil
| | - Danilo César Mota Martins
- Programa de Pós-graduação em Ciências da Saúde, Universidade de Brasília, Brasília, Brazil.,Curso de Odontologia, Centro Universitário ICESP, Brasília, Brazil
| | - Ingrid Aquino Amorim
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil.,Curso de Odontologia, Centro Universitário UNIEURO, Brasília, Brazil
| | - Cristiano Lacorte
- Laboratório de Biologia Sintética, Embrapa Recursos Genéticos e Biotecnologia, Brasília, Brazil
| | - Jeesser Alves de Almeida
- Curso de Educação Física, Universidade Federal de Mato Grosso do Sul, UFMS, Campo Grande, Brazil
| | - Octávio Luiz Franco
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil.,S-Inova Biotech, Pós-graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, Brazil.,Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil
| | - Taia Maria Berto Rezende
- Programa de Pós-graduação em Ciências da Saúde, Universidade de Brasília, Brasília, Brazil.,Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil.,Curso de Odontologia, Universidade Católica de Brasília, Brasília, Brazil
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11
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Medeiros CS, de Sousa Neto IV, Silva KKS, Cantuária APC, Rezende TMB, Franco OL, de Cassia Marqueti R, Freitas-Lima LC, Araujo RC, Yildirim A, Mackenzie R, Alves Almeida J. The Effects of High-Protein Diet and Resistance Training on Glucose Control and Inflammatory Profile of Visceral Adipose Tissue in Rats. Nutrients 2021; 13:1969. [PMID: 34201185 PMCID: PMC8227719 DOI: 10.3390/nu13061969] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 05/22/2021] [Accepted: 05/25/2021] [Indexed: 12/26/2022] Open
Abstract
High-protein diets (HPDs) are widely accepted as a way to stimulate muscle protein synthesis when combined with resistance training (RT). However, the effects of HPDs on adipose tissue plasticity and local inflammation are yet to be determined. This study investigated the impact of HPDs on glucose control, adipocyte size, and epididymal adipose inflammatory biomarkers in resistance-trained rats. Eighteen Wistar rats were randomly assigned to four groups: normal-protein (NPD; 17% protein total dietary intake) and HPD (26.1% protein) without RT and NPD and HPD with RT. Trained groups received RT for 12 weeks with weights secured to their tails. Glucose and insulin tolerance tests, adipocyte size, and an array of cytokines were determined. While HPD without RT induced glucose intolerance, enlarged adipocytes, and increased TNF-α, MCP-1, and IL1-β levels in epididymal adipose tissue (p < 0.05), RT diminished these deleterious effects, with the HPD + RT group displaying improved blood glucose control without inflammatory cytokine increases in epididymal adipose tissue (p < 0.05). Furthermore, RT increased glutathione expression independent of diet (p < 0.05). RT may offer protection against adipocyte hypertrophy, pro-inflammatory states, and glucose intolerance during HPDs. The results highlight the potential protective effects of RT to mitigate the maladaptive effects of HPDs.
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Affiliation(s)
- Claudia Stela Medeiros
- Programa de Pós-Graduação em Saúde e Desenvolvimento na Região Centro-Oeste, Faculdade de Medicina, Universidade Federal de Mato Grosso do Sul, Campo Grande 79070-900, Brazil;
| | - Ivo Vieira de Sousa Neto
- Laboratório de Análises Moleculares, Programa de Pós-Graduação em Ciências e Tecnologias em Saúde, Universidade de Brasília, Distrito Federal 72220-275, Brazil; (I.V.d.S.N.); (R.d.C.M.)
| | - Keemilyn Karla Santos Silva
- Research in Exercise and Nutrition in Health and Sports Performance—PENSARE, Graduate Program in Movement Sciences, Universidade Federal de Mato Grosso do Sul, Campo Grande 79070-900, Brazil;
| | - Ana Paula Castro Cantuária
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Distrito Federal 70790-160, Brazil; (A.P.C.C.); (T.M.B.R.); (O.L.F.)
- Programa de Pós-Graduação em Ciências da Saúde, Universidade de Brasília, Distrito Federal 70910-900, Brazil
| | - Taia Maria Berto Rezende
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Distrito Federal 70790-160, Brazil; (A.P.C.C.); (T.M.B.R.); (O.L.F.)
- Programa de Pós-Graduação em Ciências da Saúde, Universidade de Brasília, Distrito Federal 70910-900, Brazil
| | - Octávio Luiz Franco
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Distrito Federal 70790-160, Brazil; (A.P.C.C.); (T.M.B.R.); (O.L.F.)
- S-Inova Biotech, Porgrama de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande 79117-900, Brazil
| | - Rita de Cassia Marqueti
- Laboratório de Análises Moleculares, Programa de Pós-Graduação em Ciências e Tecnologias em Saúde, Universidade de Brasília, Distrito Federal 72220-275, Brazil; (I.V.d.S.N.); (R.d.C.M.)
| | - Leandro Ceotto Freitas-Lima
- Departamento de Biofísica, Universidade Federal de São Paulo, São Paulo 04039-032, Brazil; (L.C.F.-L.); (R.C.A.)
| | - Ronaldo Carvalho Araujo
- Departamento de Biofísica, Universidade Federal de São Paulo, São Paulo 04039-032, Brazil; (L.C.F.-L.); (R.C.A.)
| | - Azize Yildirim
- Department of Life Science, Whitelands College, University of Roehampton, London SW15 4DJ, UK; (A.Y.); (R.M.)
| | - Richard Mackenzie
- Department of Life Science, Whitelands College, University of Roehampton, London SW15 4DJ, UK; (A.Y.); (R.M.)
| | - Jeeser Alves Almeida
- Programa de Pós-Graduação em Saúde e Desenvolvimento na Região Centro-Oeste, Faculdade de Medicina, Universidade Federal de Mato Grosso do Sul, Campo Grande 79070-900, Brazil;
- Research in Exercise and Nutrition in Health and Sports Performance—PENSARE, Graduate Program in Movement Sciences, Universidade Federal de Mato Grosso do Sul, Campo Grande 79070-900, Brazil;
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12
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Sousa MGDC, Xavier PD, Cantuária APDC, Amorim IA, Almeida JA, Franco OL, Rezende TMB. Antimicrobial and immunomodulatory in vitro profile of double antibiotic paste. Int Endod J 2021; 54:1850-1860. [PMID: 34033685 DOI: 10.1111/iej.13576] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 05/19/2021] [Accepted: 05/21/2021] [Indexed: 12/20/2022]
Abstract
AIM To evaluate the antimicrobial and immunomodulatory activity of double antibiotic paste (DAP) in an in vitro infection model. METHODOLOGY The minimum inhibitory and bactericidal concentrations (MIC and MBC) and the antibiofilm activities (TTC assay) of DAP and its components (ciprofloxacin and metronidazole) were evaluated against Staphylococcus aureus and Enterococcus faecalis compared with triple antibiotic paste (TAP). The cellular viability of RAW 264.7 macrophages (24 and 72 h) and L929 fibroblasts (48 and 72 h) was evaluated by MTT. Furthermore, the production of TNF-α, IL-12, IL-6, IL-1α, IL-10 and NO (on RAW 264.7), besides IL-6, TGF-β and NO (on L929), stimulated with DAP in baseline and associated with heat-killed microbial-antigen conditions was measured by ELISA and Griess reaction. Data were analysed using the one-way ANOVA test with Bonferroni's corrections. RESULTS The MBC of pharmacopoeia DAP was similar to TAP for E. faecalis (0.25 μg. mL-1 ) and lower for S. aureus (DAP 1 μg. mL-1 and TAP 2 μg. mL-1 ; p < .001). Ciprofloxacin was the most effective antibiofilm drug from the pastes (35% of reduction for E. faecalis and S. aureus; p < .0001), and both pastes had a similar antibiofilm eradication against both biofilm species (29% and 35% for S. aureus and 76% and 85% for E. faecalis; p < .0001). DAP was cytotoxic against the tested cells. DAP significantly upregulated IL-1α (p < .001), IL-6 (p < .0001), TNF-α (p < .01) and IL-12 (p < .05; in the absence of antigens) and significantly reduced IL-6 (p < .0001; in the presence of HK-S. aureus) and IL-10 (p < .05; in the presence of both antigens) on macrophages. Furthermore, DAP upregulated IL-6 (p < .001) and NO (p < .05; in the absence of antigens), IL-6 (p < .001; in the presence of HK-S. aureus) and reduced NO (p < .001; in the presence of HK-S. aureus). CONCLUSIONS Double antibiotic paste and TAP had similar antimicrobial activity against S. aureus and E. faecalis. DAP upregulated pro-inflammatory cytokines mainly in the absence of antigens and had pro- and anti-inflammatory activity in RAW 264.7 macrophages and L929 fibroblasts in the presence of antigens involved in pulp infections.
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Affiliation(s)
- Maurício Gonçalves da Costa Sousa
- Pós-Graduação em Ciências Genômicas e Biotecnologia, Centro de Análises Proteômicas e Bioquímicas, Universidade Católica de Brasília, Brasília, Brazil
| | | | | | - Ingrid Aquino Amorim
- Pós-Graduação em Ciências Genômicas e Biotecnologia, Centro de Análises Proteômicas e Bioquímicas, Universidade Católica de Brasília, Brasília, Brazil.,Curso de Odontologia, Centro Universitário Unieuro, Brasília, Brazil
| | - Jeeser Alves Almeida
- Pós-Graduação em Saúde e Desenvolvimento na Região Centro Oeste, Faculdade de Medicina, Universidade Federal de Mato Grosso do Sul, Campo Grande, Brazil
| | - Octavio Luiz Franco
- Pós-Graduação em Ciências Genômicas e Biotecnologia, Centro de Análises Proteômicas e Bioquímicas, Universidade Católica de Brasília, Brasília, Brazil.,Pós-Graduação em Patologia Molecular, Universidade de Brasília, Brasília, Brazil.,S-Inova Biotech, Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, Brazil
| | - Taia Maria Berto Rezende
- Pós-Graduação em Ciências Genômicas e Biotecnologia, Centro de Análises Proteômicas e Bioquímicas, Universidade Católica de Brasília, Brasília, Brazil.,Pós-Graduação em Ciências da Saúde, Faculdade de Ciências da Saúde, Universidade de Brasília, Brasília, Brazil.,Curso de Odontologia, Universidade Católica de Brasília, Brasília, Brazil
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13
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Rodrigues G, Gonçalves da Costa Sousa M, da Silva DC, Berto Rezende TM, de Morais PC, Franco OL. Nanostrategies to Develop Current Antiviral Vaccines. ACS Appl Bio Mater 2021; 4:3880-3890. [PMID: 35006813 DOI: 10.1021/acsabm.0c01284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Infectious diseases are a worldwide concern. They are responsible for increasing the mortality rate and causing economic and social problems. Viral epidemics and pandemics, such as the COVID-19 pandemic, force the scientific community to consider molecules with antiviral activity. A number of viral infections still do not have a vaccine or efficient treatment and it is imperative to search for vaccines to control these infections. In this context, nanotechnology in association with the design of vaccines has presented an option for virus control. Nanovaccines have displayed an impressive immune response using a low dosage. This review aims to describe the advances and update the data in studies using nanovaccines and their immunomodulatory effect against human viruses.
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Affiliation(s)
- Gisele Rodrigues
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Distrito Federal 70790-160, Brazil
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Distrito Federal 70790-160, Brazil
- S-Inova Biotech, Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, Mato Grosso do Sul 79117-900, Brazil
| | - Mauricio Gonçalves da Costa Sousa
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Distrito Federal 70790-160, Brazil
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Distrito Federal 70790-160, Brazil
| | - Dieime Custódia da Silva
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Distrito Federal 70790-160, Brazil
- Departamento de Física, Fundação Universidade Federal de Rondônia, Porto Velho, Rondônia, Brazil
| | - Taia Maria Berto Rezende
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Distrito Federal 70790-160, Brazil
- Programa de Pós-Graduação em Ciências da Saúde, Universidade de Brasília, Brasília, Distrito Federal 70790-160, Brazil
- Curso de Odontologia, Universidade Católica de Brasília, Brasília, Distrito Federal 70790-160, Brazil
| | - Paulo César de Morais
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Distrito Federal 70790-160, Brazil
- Programa de Pós-Graduação em Nanociências e Nanobiotecnologia, Universidade de Brasília, Brasília Distrito Federal 70790-160, Brazil
| | - Octávio Luiz Franco
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Distrito Federal 70790-160, Brazil
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Distrito Federal 70790-160, Brazil
- Programa de Pós-Graduação em Patologia Molecular, Universidade de Brasília, Brasília, Distrito Federal 70790-160, Brazil
- S-Inova Biotech, Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, Mato Grosso do Sul 79117-900, Brazil
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14
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Amorim IA, Lima SMDF, Cantuária APDC, Freire MDS, Almeida JAD, Franco OL, Rezende TMB. Host defense peptides clavanins A and MO reduce in vitro osteoclastogenesis. Braz J Oral Sci 2021. [DOI: 10.20396/bjos.v20i00.8661512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Aim: Several systemic diseases, such as periodontitis and apical periodontitis, can cause extensive bone resorption. Host defense peptides may have the potential for the development of novel therapies for the bone resorption process. This study evaluated the potential of host defense peptides clavanins A, MO, and LL-37 in in vitro osteoclastogenesis. Methods: RAW 264.7 cultures were stimulated with recombinant of receptor activator of nuclear factor kappa B ligand in the presence of different tested concentrations of host defense peptides, besides calcium hydroxide and doxycycline. Cellular viability, nitric oxide production, and a number of differentiated osteoclast-like cells were also evaluated. Results: Results showed that none of the substances were cytotoxic, except for 128 μg.mL-1 of doxycycline after 3 days. Host defense peptides, calcium hydroxide, and doxycycline did not interfere in nitric oxide production or downregulated it. An exception was observed in the presence of 2 μg.mL-1 of doxycycline, in which nitric oxide production was up-regulated. All host defense peptides were capable of reducing osteoclast-like cell differentiation. Conclusion: Host defense peptides clavanins A and MO demonstrated to be potential suppressors of osteoclastogenesis in vitro without interfering in cellular viability and nitric oxide production. These promising results need to be further analyzed in in vivo models of bone resorption.
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15
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de Farias JO, de Freitas Lima SM, Rezende TMB. Physiopathology of nitric oxide in the oral environment and its biotechnological potential for new oral treatments: a literature review. Clin Oral Investig 2020; 24:4197-4212. [PMID: 33057827 DOI: 10.1007/s00784-020-03629-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 10/07/2020] [Indexed: 12/12/2022]
Abstract
OBJECTIVES A narrative review on the NO properties and their relationship with the oral environment describing NO's molecular origin, role, and perspectives regarding oral pathological, physiological, and regenerative processes for future applications and possible use as prevention or treatment in dentistry. MATERIALS AND METHODS Pubmed was searched using the word "nitric oxide." Reviews, clinical studies, and experimental studies were eligible for the screening process. Similar search procedures were then performed with the additional search words "conservative dentistry," "orthodontics," "endodontics," "implants," "periodontics," "oral cancer," "pulp revascularization," and "oral surgery." Furthermore, references of included articles were examined to identify further relevant articles. RESULTS There is a relationship between NO production and oral diseases such as caries, periodontal diseases, pulp inflammation, apical periodontitis, oral cancer, with implants, and orthodontics. Studies on this relationship and uses of NO, in diagnosis, prevention, and treatment, are being developed. Also, some NO and oral cavity patents have already registered. CONCLUSIONS The understanding of how NO can interfere in oral health maintenance or disease processes can contribute to elucidate the disease development and optimize treatment approaches. CLINICAL RELEVANCE NO has considerable biotechnological potential and can contribute to improving diagnostics and treating the oral environment. As a biomarker, NO has an important role in the early diagnosis of diseases. Regarding treatments, NO can possibly be used as a regulator of inflammation, anti-biofilm action, replacing antibiotics, inducing apoptosis of cancerous cells, and contributing to the angiogenesis. All these studies are initial considerations regarding the relationship between NO and dentistry.
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Affiliation(s)
- Jade Ormondes de Farias
- Curso de Odontologia, Universidade Católica de Brasília, QS 07 Lote 01, Brasília, DF, Brazil.,Pós-graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, SGAN 916N - Módulo B Avenida W5-Campus II -Modulo C, room C-221, Asa Norte, Brasília, DF, 70.790-160, Brazil.,Pós-graduação em Ciências da Saúde, Faculdade de Ciências de Saúde, Universidade de Brasília, Campus Darcy Ribeiro s/n-Asa Norte, Brasília, DF, Brazil
| | - Stella Maris de Freitas Lima
- Curso de Odontologia, Universidade Católica de Brasília, QS 07 Lote 01, Brasília, DF, Brazil.,Pós-graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, SGAN 916N - Módulo B Avenida W5-Campus II -Modulo C, room C-221, Asa Norte, Brasília, DF, 70.790-160, Brazil
| | - Taia Maria Berto Rezende
- Curso de Odontologia, Universidade Católica de Brasília, QS 07 Lote 01, Brasília, DF, Brazil. .,Pós-graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, SGAN 916N - Módulo B Avenida W5-Campus II -Modulo C, room C-221, Asa Norte, Brasília, DF, 70.790-160, Brazil. .,Pós-graduação em Ciências da Saúde, Faculdade de Ciências de Saúde, Universidade de Brasília, Campus Darcy Ribeiro s/n-Asa Norte, Brasília, DF, Brazil.
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Rezende TMB, Ribeiro Sobrinho AP, Vieira LQ, Sousa MGDC, Kawai T. Mineral trioxide aggregate (MTA) inhibits osteoclastogenesis and osteoclast activation through calcium and aluminum activities. Clin Oral Investig 2020; 25:1805-1814. [PMID: 32789653 DOI: 10.1007/s00784-020-03483-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 07/29/2020] [Indexed: 12/21/2022]
Abstract
OBJECTIVE To evaluate the effect(s) of mineral trioxide aggregate (MTA) on in vitro RANKL-mediated osteoclast-dependent bone resorption events and the influence of Ca2+ and Al3+ on the osteoclastogenesis inhibition by MTA. MATERIALS AND METHODS Two types of osteoclast precursors, RAW 264.7 (RAW) cell line or bone marrow cells (obtained from BALB/c mice and stimulated with recombinant (r) macrophage colony stimulation factor (M-CSF), were stimulated with or without recombinant (r) activator of nuclear kappa B ligand (RANKL), in the presence or absence of MTA for 6 to 8 days. White Angelus MTA and Bios MTA (Angelus, Londrina, Paraná, Brazil) were prepared and inserted into capillary tubes (direct contact surface = 0.50 mm2 and 0.01 mm2). Influence of MTA on these types of osteoclast precursors was measured by the number of differentiated tartrate-resistant acid phosphatase (TRAP)-positive multinuclear cells (RAW and bone marrow cells), TRAP enzyme activity (RAW cells), cathepsin K gene expression (RAW cells), and resorptive pit formation (RAW cells) by mature osteoclasts. Besides, RAW cells were also stimulated with Ca2+ and Al3+ to evaluate the influence of these ions on MTA anti-osteoclastogenic potential. RESULTS In bone marrow and RAW cells, the number of TRAP-positive mature osteoclast cells induced by rRANKL was significantly inhibited by the presence of MTA compared with control rRANKL stimulation without MTA (p < 0.05), along with the reduction of TRAP enzyme activity (p < 0.05) and the low expression of cathepsin K gene (p < 0.05). In contrast, to control mature osteoclasts, the resorption area on dentin was significantly decreased for mature osteoclasts incubated with MTA (p < 0.05). rRANKL-stimulated RAW cells treated with Ca2+ and Al3+ decreased the number of osteoclasts cells. Besides, the aluminum oxide was the dominant suppressor of the osteoclastogenesis process. CONCLUSIONS MTA significantly suppressed RANKL-mediated osteoclastogenesis and osteoclast activity and, therefore, appears able to suppress bone resorption events in periapical lesions. This process might be related to Ca2+ and Al3+ activities. CLINICAL RELEVANCE MTA is an important worldwidely acknowleged biomaterial. The knowledge about its molecular activities on osteoclasts might contribute to improving the understanding of its clinical efficacy.
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Affiliation(s)
- Taia Maria Berto Rezende
- Programa de Pós-graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, DF, Brazil. .,Curso de Odontologia, Universidade Católica de Brasília, Brasília, DF, Brazil. .,Programa de Pós-graduação em Ciências da Saúde, Universidade de Brasília, Brasília, DF, Brazil.
| | - Antônio Paulino Ribeiro Sobrinho
- Departamento de Odontologia Restauradora, Faculdade de Odontologia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Leda Quercia Vieira
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | | | - Toshihisa Kawai
- Department of Oral Science and Translational Research, College of Dental Medicine, NOVA Southeastern University, Fort Lauderdale, FL, USA.,Cell Therapy Institute, Center for Collaborative Research, NOVA Southeastern University, Fort Lauderdale, FL, USA
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Sousa MGDC, Xavier PD, Lima SMDF, Almeida JAD, Franco OL, Rezende TMB. Enterococcus faecalis and Staphylococcus aureus stimulate nitric oxide production in macrophages and fibroblasts in vitro. Braz J Oral Sci 2020. [DOI: 10.20396/bjos.v19i0.8657039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Aim: Nitric oxide (NO) is an important mediator related to damage of the pulp tissue and at the same time to regenerative pulp processes. However, it is not clear how common endodontic microorganisms can regulate this mediator. This study aimed to investigate NO production by macrophages and fibroblasts against Enterococcus faecalis- and Staphylococcus aureus-antigens. Methods: RAW 264.7 macrophages and L929 fibroblast cell lines were stimulated with different heat-killed (HK) antigen concentrations (105-108 colony forming units - CFU) from E. faecalis and S. aureus with or without interferon-gamma (IFN-γ). Cell viability by MTT colorimetric assay and NO production from the culture supernatants were evaluated after 72 h. Results: Data here reported demonstrated that none of the antigen concentrations decreased cell viability in macrophages and fibroblasts. The presence of HK-S. aureus and HK-E. faecalis antigen- stimulated NO production with or without IFN-γ on RAW 264.7. The HK-S. aureus antigen stimulated NO production in L929 fibroblasts with or without IFN-γ, and the highest concentration of HK-E. faecalis with IFN-γ also stimulated NO production by these cells. Conclusion: The amount of NO produced by macrophages and fibroblasts may be involved in the concentration and type of prevalent endodontic microorganisms, generating new answers for the understanding of pulpal revascularization/regeneration processes.
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Fonseca Tavares WL, Berto Rezende TM, Gracielle Martins da Silva I, Raimundo Corrêa J, Feitosa Henriques LC, Ribeiro Sobrinho AP. Scanning Electron Microscopic/Energy-Dispersive X-Ray Analysis in Cases of Apical Periodontitis Refractory to Endodontic Treatment: A Case Series Study. Iran Endod J 2019; 14:306-312. [PMID: 36794099 PMCID: PMC9923418 DOI: 10.22037/iej.v14i4.26018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 08/15/2019] [Accepted: 08/31/2019] [Indexed: 02/17/2023]
Abstract
This study aimed to present a case series of refractory endodontic treatment leading to persistent apical periodontitis. All cases were submitted to scanning electron microscopic/energy-dispersive X-ray analysis (SEM/EDS) of the external surface of the surgically removed samples and identification of the elements present in the specimens. Carbon, oxygen and calcium were elements present in all of the cases in this study. The presence of microorganisms in close contact with the periapical surrounding tissues induced the perpetuation of the inflammation process. Despite the presence of other elements different from those normally expected in the tissues, we may not attribute any interference in the periapical response to them.
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Affiliation(s)
- Warley Luciano Fonseca Tavares
- Departamento de Odontologia Restauradora, Faculdade de Odontologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Taia Maria Berto Rezende
- Faculdade de Odontologia, Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil; , Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil; , Programa de Pós-Graduação em Ciências da Saúde, Universidade de Brasília, Brasília, Distrito Federal, Brazil
| | - Ingrid Gracielle Martins da Silva
- Laboratório de Microscopia e Microanálises, Departamento de Biologia Celular, Instituto de Ciências Biológicas, Universidade de Brasília, Brazil
| | - José Raimundo Corrêa
- Laboratório de Microscopia e Microanálises, Departamento de Biologia Celular, Instituto de Ciências Biológicas, Universidade de Brasília, Brazil
| | - Luiz Carlos Feitosa Henriques
- Departamento de Odontologia Restauradora, Faculdade de Odontologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Antônio Paulino Ribeiro Sobrinho
- Departamento de Odontologia Restauradora, Faculdade de Odontologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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Sales MM, de Sousa CV, de Paula Santana HA, Motta-Santos D, Barbosa LP, Santos PA, Rezende TMB, Browne RAV, de Andrade RV, Simões HG. Nitric oxide and blood pressure responses to short-term resistance training in adults with and without type-2 diabetes: a randomized controlled trial. Sport Sci Health 2018. [DOI: 10.1007/s11332-018-0468-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Silva ON, de la Fuente-Núñez C, Haney EF, Fensterseifer ICM, Ribeiro SM, Porto WF, Brown P, Faria-Junior C, Rezende TMB, Moreno SE, Lu TK, Hancock REW, Franco OL. An anti-infective synthetic peptide with dual antimicrobial and immunomodulatory activities. Sci Rep 2016; 6:35465. [PMID: 27804992 PMCID: PMC5090204 DOI: 10.1038/srep35465] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 09/30/2016] [Indexed: 12/31/2022] Open
Abstract
Antibiotic-resistant infections are predicted to kill 10 million people per year by 2050, costing the global economy $100 trillion. Therefore, there is an urgent need to develop alternative technologies. We have engineered a synthetic peptide called clavanin-MO, derived from a marine tunicate antimicrobial peptide, which exhibits potent antimicrobial and immunomodulatory properties both in vitro and in vivo. The peptide effectively killed a panel of representative bacterial strains, including multidrug-resistant hospital isolates. Antimicrobial activity of the peptide was demonstrated in animal models, reducing bacterial counts by six orders of magnitude, and contributing to infection clearance. In addition, clavanin-MO was capable of modulating innate immunity by stimulating leukocyte recruitment to the site of infection, and production of immune mediators GM-CSF, IFN-γ and MCP-1, while suppressing an excessive and potentially harmful inflammatory response by increasing synthesis of anti-inflammatory cytokines such as IL-10 and repressing the levels of pro-inflammatory cytokines IL-12 and TNF-α. Finally, treatment with the peptide protected mice against otherwise lethal infections caused by both Gram-negative and -positive drug-resistant strains. The peptide presented here directly kills bacteria and further helps resolve infections through its immune modulatory properties. Peptide anti-infective therapeutics with combined antimicrobial and immunomodulatory properties represent a new approach to treat antibiotic-resistant infections.
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Affiliation(s)
- O N Silva
- Departamento de Biologia, Instituto de Ciências Biológicas, Programa de pós-graduação em Genética e Biotecnologia, Universidade Federal de Juiz de Fora, Juiz de Fora-MG, Brazil.,S-Inova Biotech, Pós-graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, MS, Brazil
| | - C de la Fuente-Núñez
- Synthetic Biology Group, MIT Synthetic Biology Center, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America.,Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America.,Department of Biological Engineering, and Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America.,Broad Institute of MIT and Harvard, Cambridge, Massachusetts, United States of America.,Harvard Biophysics Program, Harvard University, Boston, Massachusetts, United States of America.,The Center for Microbiome Informatics and Therapeutics, Cambridge, Massachusetts, United States of America
| | - E F Haney
- Department of Microbiology and Immunology, University of British Columbia, Vancouver, British Columbia, Canada
| | - I C M Fensterseifer
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brazil.,Programa de Pós-graduação em Patologia Molecular, Universidade de Brasília, Brasília, Brazil
| | - S M Ribeiro
- S-Inova Biotech, Pós-graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, MS, Brazil
| | - W F Porto
- Programa de Pós-graduação em Patologia Molecular, Universidade de Brasília, Brasília, Brazil
| | - P Brown
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
| | - C Faria-Junior
- Curso de Odontologia, Universidade Católica de Brasília, Brazil
| | - T M B Rezende
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brazil.,Curso de Odontologia, Universidade Católica de Brasília, Brazil.,Pós-graduação em Ciências da Saúde, Universidade de Brasília, Brazil
| | - S E Moreno
- S-Inova Biotech, Pós-graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, MS, Brazil
| | - T K Lu
- Synthetic Biology Group, MIT Synthetic Biology Center, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America.,Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America.,Department of Biological Engineering, and Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America.,Broad Institute of MIT and Harvard, Cambridge, Massachusetts, United States of America.,Harvard Biophysics Program, Harvard University, Boston, Massachusetts, United States of America.,The Center for Microbiome Informatics and Therapeutics, Cambridge, Massachusetts, United States of America
| | - R E W Hancock
- Department of Microbiology and Immunology, University of British Columbia, Vancouver, British Columbia, Canada
| | - O L Franco
- Departamento de Biologia, Instituto de Ciências Biológicas, Programa de pós-graduação em Genética e Biotecnologia, Universidade Federal de Juiz de Fora, Juiz de Fora-MG, Brazil.,S-Inova Biotech, Pós-graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, MS, Brazil.,Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brazil.,Programa de Pós-graduação em Patologia Molecular, Universidade de Brasília, Brasília, Brazil
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Lara VDPL, Cardoso FP, Brito LCN, Vieira LQ, Ribeiro Sobrinho AP, Rezende TMB. Experimental Furcal Perforation Treated with MTA: Analysis of the Cytokine Expression. Braz Dent J 2015; 26:337-41. [DOI: 10.1590/0103-6440201300006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Accepted: 06/23/2015] [Indexed: 01/18/2023] Open
Abstract
<p>The aim of this study was to evaluate mineral trioxide aggregate (MTA)-induced cytokine expression in mice after experimental furcal perforation. BALB/c mice (n=5) were subjected to induced furcal drilling of the maxillary first molar followed by MTA sealing in the left side (experimental group) and paraffin sealing in the right side (control group). Animals were euthanized at 7, 14 and 21 days after sealing the perforations. The expression levels of the IFN-γ, TNF-α, IL-10, IL-4, TGF-β and RANKL genes were investigated by real time polymerase chain reaction (PCR) in the teeth and surrounding tissues. In the experimental groups, after the 7th day, there was a down-regulation of the mRNA levels of TNF-α and IL-4 compared to the 14th day (p<0.05). In these groups, the mRNA levels of RANKL, IFN-γ and TNF-α were statistically higher after 14 days compared to 21 days post-MTA sealing (p<0.05). The level of IL-10 mRNA was increased at the 21st day (p<0.05). The mRNA expression of TGF-β did not exhibit any statistically relevant results. There was a statistical down-regulation of IL-4 gene expressions when control and experimental groups were compared at days 7 and 21. In conclusion, MTA sealing favored the expression of pro-inflammatory cytokines in the intermediate phase of the immuno-inflammatory response (14th day). The reduction of these cytokines in later phase of the response was probably due to immunoregulation by IL-10.</p>
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Affiliation(s)
| | | | | | | | | | - Taia Maria Berto Rezende
- Universidade Católica de Brasília, Brazil; Universidade Católica de Brasília, Brazil; Universidade de Brasília, Brazil
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22
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Lima SMDF, Sousa MGDC, Freire MDS, de Almeida JA, Cantuária APDC, Silva TAME, de Freitas CG, Dias SC, Franco OL, Rezende TMB. Immune Response Profile against Persistent Endodontic Pathogens Candida albicans and Enterococcus faecalis In Vitro. J Endod 2015; 41:1061-5. [PMID: 25845887 DOI: 10.1016/j.joen.2015.02.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2014] [Revised: 02/08/2015] [Accepted: 02/08/2015] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Persistent microorganisms such as Candida albicans and Enterococcus faecalis might be directly related to endodontic treatment failure. The host response to these microorganisms impairs the reestablishment of intraradicular and periradicular health. METHODS The present investigation evaluated the expression of inflammatory mediators produced by RAW 264.7 cells in the presence of heat-killed antigens (HK) C. albicans and E. faecalis. Cultures of RAW cells were stimulated with both antigens in the presence or absence of recombinant interferon (rIFN)-γ. Parameters of cell viability, production of nitric oxide (NO), as well as the synthesis of interleukin (IL)-1α, IL-6, IL-10, IL-12, monocyte chemotactic protein-1, and tumor necrosis factor (TNF)-α were analyzed. RESULTS Results demonstrated that cell viability was especially reduced in antigens and rIFN-γ-stimulated groups. Groups stimulated with HK C. albicans upregulated IL-10 production. Otherwise, the addition of rIFN-γ to HK C. albicans upregulated TNF-α and NO production. Groups stimulated with HK E. faecalis upregulated TNF-α production. HK E. faecalis and rIFN-γ upregulated TNF-α and NO synthesis. The production of other cytokines remained unchanged by all stimuli. CONCLUSIONS Knowledge regarding the host mechanism of response to microorganisms that perpetuate endodontic infection and the periradicular lesions can contribute to optimization of endodontic therapy. The mentioned inflammatory mediators and virulence factors involved in endodontic failure might guide lesion progression and also be targets in the development of disinfectant and immunomodulatory agents.
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Affiliation(s)
- Stella Maris de Freitas Lima
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil; Curso de Odontologia, Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil
| | - Maurício Gonçalves da Costa Sousa
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil; Programa de Pós-Graduação em Ciências da Saúde, Universidade de Brasília, Brasília, Distrito Federal, Brazil
| | - Mirna de Souza Freire
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil; Programa de Pós-Graduação da Rede Centro-Oeste, Brasília, Distrito Federal, Brazil
| | - Jeeser Alves de Almeida
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil; Curso de Educação Física, Universidade Federal de Mato Grosso do Sul - UFMS, Campo Grande, Mato Grosso do Sul, Brazil
| | - Ana Paula de Castro Cantuária
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil; Programa de Pós-Graduação em Ciências da Saúde, Universidade de Brasília, Brasília, Distrito Federal, Brazil
| | - Thaís Angélica Machado E Silva
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil; Curso de Odontologia, Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil
| | - Camila Guimarães de Freitas
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil; Instituto Federal de Brasília, Brasília, Distrito Federal, Brazil
| | - Simoni Campos Dias
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil
| | - Octávio Luiz Franco
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil; S-Inova, Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, Mato Grosso do Sul, Brazil
| | - Taia Maria Berto Rezende
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil; Curso de Odontologia, Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil; Programa de Pós-Graduação em Ciências da Saúde, Universidade de Brasília, Brasília, Distrito Federal, Brazil.
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Lima SMDF, de Pádua GM, Sousa MGDC, Freire MDS, Franco OL, Rezende TMB. Antimicrobial peptide-based treatment for endodontic infections--biotechnological innovation in endodontics. Biotechnol Adv 2014; 33:203-213. [PMID: 25447423 DOI: 10.1016/j.biotechadv.2014.10.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2014] [Revised: 10/07/2014] [Accepted: 10/31/2014] [Indexed: 01/30/2023]
Abstract
The presence/persistence of microorganisms in the pulp and periapical area corresponds to the maintenance of an exacerbated immune response that leads to the start of periradicular bone resorption and its perpetuation. In endodontic treatment, the available intracanal medications do not have all the desirable properties in the context of endodontic infection and apical periodontitis; they need to include not only strong antimicrobial performance but also an immunomodulatory and reparative activity, without host damage. In addition, there are various levels of resistance to root canal medications. Thus, antimicrobial agents that effectively eliminate resistant species in root canals could potentially improve endodontic treatment. In the emergence of new therapies, an increasing number of studies on antimicrobial peptides (AMPs) have been seen over the past few years. AMPs are defense biomolecules produced in response to infection, and they have a wide spectrum of action against many oral microorganisms. There are some studies that correlate peptides and oral infections, including oral peptides, neuropeptides, and bacterial, fish, bovine and synthetic peptides. So far, there are around 120 published studies correlating endodontic microbiota with AMPs but, according to our knowledge, there are no registered patents in the American patent database. There are a considerable number of AMPs that exhibit excellent antimicrobial activity against endodontic microbiota at a small inhibitory concentration and modulate an exacerbated immune response, down-regulating bone resorption. All these reasons indicate the antimicrobial peptide-based endodontic treatment as an emerging and promising option.
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Affiliation(s)
- Stella Maris de Freitas Lima
- Centro de Análises Proteômicas e Bioquímicas, Pós-graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, SGAN 916N, Av. W5, Campus II, Modulo C, Brasília, DF, Brazil; Curso de Odontologia, Universidade Católica de Brasília, Campus I, QS 07 Lote 01 room S213 EPCT, Águas Claras, Taguatinga, DF, Brazil
| | - Gabriela Martins de Pádua
- Curso de Odontologia, Universidade Católica de Brasília, Campus I, QS 07 Lote 01 room S213 EPCT, Águas Claras, Taguatinga, DF, Brazil
| | - Maurício Gonçalves da Costa Sousa
- Centro de Análises Proteômicas e Bioquímicas, Pós-graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, SGAN 916N, Av. W5, Campus II, Modulo C, Brasília, DF, Brazil; Curso de Odontologia, Universidade Católica de Brasília, Campus I, QS 07 Lote 01 room S213 EPCT, Águas Claras, Taguatinga, DF, Brazil
| | - Mirna de Souza Freire
- Centro de Análises Proteômicas e Bioquímicas, Pós-graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, SGAN 916N, Av. W5, Campus II, Modulo C, Brasília, DF, Brazil; Programa de Doutorado da Rede Centro-Oeste, Brasília, DF, Brazil
| | - Octávio Luiz Franco
- Centro de Análises Proteômicas e Bioquímicas, Pós-graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, SGAN 916N, Av. W5, Campus II, Modulo C, Brasília, DF, Brazil; Programa de Doutorado da Rede Centro-Oeste, Brasília, DF, Brazil; S-Inova, Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, MS, Brazil
| | - Taia Maria Berto Rezende
- Centro de Análises Proteômicas e Bioquímicas, Pós-graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, SGAN 916N, Av. W5, Campus II, Modulo C, Brasília, DF, Brazil; Curso de Odontologia, Universidade Católica de Brasília, Campus I, QS 07 Lote 01 room S213 EPCT, Águas Claras, Taguatinga, DF, Brazil; Programa de Pós-Graduação em Ciências da Saúde, Universidade de Brasília, Faculdade de Ciências da Saúde (FS), Campus Universitário Darcy Ribeiro, Brasília, DF, Brazil.
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Cândido EDS, Fernandes GDR, de Alencar SA, Cardoso MHES, Lima SMDF, Miranda VDJ, Porto WF, Nolasco DO, de Oliveira-Júnior NG, Barbosa AEADD, Pogue RE, Rezende TMB, Dias SC, Franco OL. Shedding some light over the floral metabolism by arum lily (Zantedeschia aethiopica) spathe de novo transcriptome assembly. PLoS One 2014; 9:e90487. [PMID: 24614014 PMCID: PMC3948674 DOI: 10.1371/journal.pone.0090487] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Accepted: 02/01/2014] [Indexed: 01/19/2023] Open
Abstract
Zantedeschia aethiopica is an evergreen perennial plant cultivated worldwide and commonly used for ornamental and medicinal purposes including the treatment of bacterial infections. However, the current understanding of molecular and physiological mechanisms in this plant is limited, in comparison to other non-model plants. In order to improve understanding of the biology of this botanical species, RNA-Seq technology was used for transcriptome assembly and characterization. Following Z. aethiopica spathe tissue RNA extraction, high-throughput RNA sequencing was performed with the aim of obtaining both abundant and rare transcript data. Functional profiling based on KEGG Orthology (KO) analysis highlighted contigs that were involved predominantly in genetic information (37%) and metabolism (34%) processes. Predicted proteins involved in the plant circadian system, hormone signal transduction, secondary metabolism and basal immunity are described here. In silico screening of the transcriptome data set for antimicrobial peptide (AMP) –encoding sequences was also carried out and three lipid transfer proteins (LTP) were identified as potential AMPs involved in plant defense. Spathe predicted protein maps were drawn, and suggested that major plant efforts are expended in guaranteeing the maintenance of cell homeostasis, characterized by high investment in carbohydrate, amino acid and energy metabolism as well as in genetic information.
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Affiliation(s)
- Elizabete de Souza Cândido
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília-DF, Brazil; Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília-DF, Brazil
| | - Gabriel da Rocha Fernandes
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília-DF, Brazil
| | - Sérgio Amorim de Alencar
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília-DF, Brazil
| | - Marlon Henrique e Silva Cardoso
- Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília-DF, Brazil
| | - Stella Maris de Freitas Lima
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília-DF, Brazil; Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília-DF, Brazil
| | - Vívian de Jesus Miranda
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília-DF, Brazil; Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília-DF, Brazil
| | - William Farias Porto
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília-DF, Brazil; Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília-DF, Brazil
| | - Diego Oliveira Nolasco
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília-DF, Brazil; Curso de Física, Universidade Católica de Brasília, Brasília - DF, Brazil
| | - Nelson Gomes de Oliveira-Júnior
- Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília-DF, Brazil; Programa de Pós-Graduação em Biologia Animal, Universidade de Brasília, Brasília-DF, Brazil
| | - Aulus Estevão Anjos de Deus Barbosa
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília-DF, Brazil; Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília-DF, Brazil
| | - Robert Edward Pogue
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília-DF, Brazil
| | - Taia Maria Berto Rezende
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília-DF, Brazil; Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília-DF, Brazil; Curso de Odontologia, Universidade Católica de Brasília, Brasília - DF, Brazil
| | - Simoni Campos Dias
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília-DF, Brazil; Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília-DF, Brazil
| | - Octávio Luiz Franco
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília-DF, Brazil; Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília-DF, Brazil
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Lima SMF, Grisi DC, Kogawa EM, Franco OL, Peixoto VC, Gonçalves-Júnior JF, Arruda MP, Rezende TMB. Diabetes mellitus and inflammatory pulpal and periapical disease: a review. Int Endod J 2013; 46:700-9. [PMID: 23442003 DOI: 10.1111/iej.12072] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Accepted: 01/12/2013] [Indexed: 12/12/2022]
Abstract
Diabetes mellitus (DM) is one of the most common metabolic disorders. DM is characterized by hyperglycaemia, resulting in wound healing difficulties and systemic and oral manifestations, which have a direct effect on dental pulp integrity. Experimental and clinical studies have demonstrated a higher prevalence of periapical lesions in patients with uncontrolled diabetes. The influence of DM on periapical bone resorption and its impact on dental intervention of such patients are reviewed, and its aetiology and pathogenesis are analysed at molecular level. Pulps from patients with diabetes have the tendency to present limited dental collateral circulation, impaired immune response, increased risk of acquiring pulp infection (especially anaerobic ones) or necrosis, besides toothache and occasional tendency towards pulp necrosis caused by ischaemia. In regard to molecular pathology, hyperglycaemia is a stimulus for bone resorption, inhibiting osteoblastic differentiation and reducing bone recovery. The relationship between poorly controlled diabetes and bone metabolism is not clearly understood. Molecular knowledge about pulp alterations in patients with diabetes could offer new therapeutic directions. Knowledge about how diabetes affects systemic and oral health has an enduring importance, because it may imply not only systemic complications but also a higher risk of oral diseases with a significant effect on pulp and periapical tissue.
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Affiliation(s)
- S M F Lima
- Center of Proteomic and Biochemical Analyzes, Post graduation in Genomic Sciences and Biotechnology, Catholic University of Brasília, Brasília, DF, Brazil
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Rezende TMB, Vieira LQ, Sobrinho APR, Oliveira RR, Taubman MA, Kawai T. The influence of mineral trioxide aggregate on adaptive immune responses to endodontic pathogens in mice. J Endod 2009; 34:1066-71. [PMID: 18718367 DOI: 10.1016/j.joen.2008.06.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2007] [Revised: 06/04/2008] [Accepted: 06/17/2008] [Indexed: 10/21/2022]
Abstract
This study assessed the influence of mineral trioxide aggregate (MTA) on adaptive immune responses. BALB/c mice were immunized with heat-killed Fusobacterium nucleatum (Fn) in MTA or other control adjuvants, and serum IgG responses to Fn were measured. Either Fn- or Peptostreptococcus anaerobius (Pa)-reactive memory T cells (Tm) were preincubated in vitro with/without MTA and restimulated with Fn or Pa. Tm proliferation and cytokine production were assessed. Compared with control groups, immunoglobulin G-antibody responses were upregulated in mice immunized with Fn in MTA in a similar manner to animals immunized with Fn in Freund's adjuvant or aluminum hydroxide adjuvant. Although MTA did not affect the upregulated expression of interleukin 10, tumor necrosis factor alpha, or RANKL by Tm, it suppressed the proliferation of Pa- or Fn-Tm and inhibited their production of Th1- or Th2-signature cytokines. MTA upregulated the adaptive humoral immune responses but had little or no effect on pro- or anti-inflammatory cytokine production by Tm.
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Affiliation(s)
- Taia Maria Berto Rezende
- Departamento de Dentística Restauradora, Faculdade de Odontologia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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Rezende TMB, Vieira LQ, Cardoso FP, Oliveira RR, de Oliveira Mendes ST, Jorge MLR, Ribeiro Sobrinho AP. The effect of mineral trioxide aggregate on phagocytic activity and production of reactive oxygen, nitrogen species and arginase activity by M1 and M2 macrophages. Int Endod J 2007; 40:603-11. [PMID: 17627697 DOI: 10.1111/j.1365-2591.2007.01255.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
AIM To assess the influence of co-culture with mineral trioxide aggregate (MTA) on phagocytosis and the production of reactive oxygen intermediates (ROI) and nitrogen (NO) species and the arginase activity by M1 and M2 peritoneal macrophages. METHODOLOGY Cellular viability, adherence and phagocytosis of Saccharomyces boulardii were assayed in the presence of MTA. Macrophages were stimulated with zymosan for ROI assays and with Fusobacterium nucleatum and Peptostreptococcus anaerobius and IFN-gamma for NO production and arginase activity, when in contact with capillaries containing MTA. Data were analysed by T, anova, Kruskall-Wallis and Mann-Whitney tests. RESULTS M2 macrophages displayed greater cellular viability in polypropylene tubes, greater ability to ingest yeast and smaller production of ROI and higher arginase activity when compared with M1 macrophages. Both macrophages, M1 and M2, presented similar cell adherence and NO production. The addition of bacterial preparations to macrophages interfered with NO and arginase productions. MTA did not interfere with any of the parameters measured. CONCLUSIONS Phagocytosis and the ability of the two macrophage subtypes to eliminate microbes were not affected by MTA.
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Affiliation(s)
- T M B Rezende
- Departamento de Dentística Restauradora, Faculdade de Odontologia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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Ernst CWO, Lee JE, Nakanishi T, Karimbux NY, Rezende TMB, Stashenko P, Seki M, Taubman MA, Kawai T. Diminished forkhead box P3/CD25 double-positive T regulatory cells are associated with the increased nuclear factor-kappaB ligand (RANKL+) T cells in bone resorption lesion of periodontal disease. Clin Exp Immunol 2007; 148:271-80. [PMID: 17355249 PMCID: PMC1868884 DOI: 10.1111/j.1365-2249.2006.03318.x] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Periodontal disease involves multi-bacterial infections accompanied by inflammatory bone resorption lesions. The abundant T and B lymphocyte infiltrates are the major sources of the osteoclast differentiation factor, receptor activator for nuclear factor-kappaB ligand (RANKL) which, in turn, contributes to the development of bone resorption in periodontal disease. In the present study, we found that the concentrations of RANKL and regulatory T cell (T(reg))-associated cytokine, interleukin (IL)-10, in the periodontal tissue homogenates were correlated negatively, whereas RANKL and proinflammatory cytokine, IL-1beta, showed positive correlation. Also, according to the fluorescent-immunohistochemistry, the frequency of forkhead box P3 (FoxP3)/CD25 double-positive cells was diminished strikingly in the bone resorption lesion of periodontal disease compared to healthy gingival tissue, while CD25 or FoxP3 single positive cells were still observed in lesions where abundant RANKL+ lymphocytes were present. Very importantly, few or no expressions of FoxP3 by the RANKL+ lymphocytes were observed in the diseased periodontal tissues. Finally, IL-10 suppressed both soluble RANKL (sRANKL) and membrane RANKL (mRANKL) expression by peripheral blood mononuclear cells (PBMC) activated in vitro in a bacterial antigen-specific manner. Taken together, these results suggested that FoxP3/CD25 double-positive T(reg) cells may play a role in the down-regulation of RANKL expression by activated lymphocytes in periodontal diseased tissues. This leads to the conclusion that the phenomenon of diminished CD25+FoxP3+ T(reg) cells appears to be associated with the increased RANKL+ T cells in the bone resorption lesion of periodontal disease.
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Affiliation(s)
- C W O Ernst
- Department of Immunology, The Forsyth Institute, Boston, MA 02115, USA
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Abstract
AIM To test the effect of two commercial brands of grey mineral trioxide aggregate (ProRoot and MTA-Angelus) on cytokine production by M1 and M2 inflammatory macrophages. METHODOLOGY M1 (from C57BL/6 mice) and M2 peritoneal inflammatory macrophages (from C57BL/6 IL12p40-/- mice) were obtained and cultured in vitro in the presence of MTA. The cellular viability and the production of tumour necrosis factor-alpha, interleukin (IL)-12 and IL-10 in response to stimulation with interferon-gamma and Fusobacterium nucleatum or Peptostreptococcus anaerobius were evaluated. Data were analysed by Mann-Whitney, Kruskal-Wallis and anova tests. RESULTS The cements did not interfere with cellular viability or with cytokine production by either type of macrophage. However, M2 macrophages produced higher levels of IL-10 when stimulated with F. nucleatum than M1 macrophages (P < 0.05). CONCLUSIONS The brands of MTA evaluated did not interfere in the cytokine response by M1 or M2 macrophages to the two bacteria tested. However, a difference in cytokine production between the two types of macrophages was found.
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Affiliation(s)
- T M B Rezende
- Departamento de Dentística Restauradora, Faculdade de Odontologia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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