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Coeli-Lacchini FB, da Silva G, Belentani M, Alves JSF, Ushida TR, Lunardelli GT, Garcia CB, Silva TA, Lopes NP, Leopoldino AM. Spermidine Suppresses Oral Carcinogenesis through Autophagy Induction, DNA Damage Repair, and Oxidative Stress Reduction. Am J Pathol 2023; 193:2172-2181. [PMID: 37741450 DOI: 10.1016/j.ajpath.2023.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 08/01/2023] [Accepted: 09/01/2023] [Indexed: 09/25/2023]
Abstract
Autophagy has been proposed to play a dual role in cancer-as a tumor suppressor in early stages and oncogenic in late stages of tumorigenesis. This study investigated the role of autophagy in oral carcinogenesis using the model of oral squamous cell carcinoma (OSCC) induced by carcinogen 4-nitroquinoline 1-oxide (4NQO), mimicking molecular and histopathologic aspects of human OSCC. The induction of autophagy by spermidine (SPD) treatment reduced the severity of lesions and the incidence of OSCC in mice exposed to 4NQO. On the other hand, autophagy inhibition by chloroquine treatment had no protection. The comet assay indicated that SPD reduced 4NQO-induced DNA damage, likely related to the activation of DNA repair and the decrease of reactive oxygen species. As sphingolipid alterations have been reported in OSCC, sphingolipids in the tongue and plasma of animals were analyzed and plasma C16 ceramide levels were shown to increase proportionally to lesion severity, indicating its potential as a biomarker. Mice exposed to 4NQO plus SPD had lower levels of C16 ceramide than the 4NQO group, which indicated SPD's ability to prevent the 4NQO-induced carcinogenesis. Together, these data indicate that activation of autophagy has a tumor suppressor role during the early stages of oral carcinogenesis. Because of its ability to induce autophagy accompanied by reduced oxidative stress and DNA damage, SPD may have a protective action against chemically induced oral cancer.
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Affiliation(s)
- Fernanda B Coeli-Lacchini
- Departments of Clinical Analyses, Toxicology, and Food Sciences, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte
| | - Gabriel da Silva
- Departments of Clinical Analyses, Toxicology, and Food Sciences, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte
| | - Monica Belentani
- Departments of Clinical Analyses, Toxicology, and Food Sciences, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte
| | - Jovelina S F Alves
- Departments of Clinical Analyses, Toxicology, and Food Sciences, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte
| | - Tatiane R Ushida
- Departments of Clinical Analyses, Toxicology, and Food Sciences, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte
| | - Glauce T Lunardelli
- Departments of Clinical Analyses, Toxicology, and Food Sciences, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte
| | - Cristiana B Garcia
- Departments of Clinical Analyses, Toxicology, and Food Sciences, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte
| | - Tarcília A Silva
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Norberto P Lopes
- Biomolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Andréia M Leopoldino
- Departments of Clinical Analyses, Toxicology, and Food Sciences, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte.
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2
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Sola GS, Costa MRN, Silva TA, Costa MRL, Souza RR, Peters LP, Carvalho CM, Silva BKA. Antimicrobial potential of extracts from leaves and culms of an Amazonian native bamboo. BRAZ J BIOL 2023; 83:e277199. [PMID: 38055582 DOI: 10.1590/1519-6984.277199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 10/08/2023] [Indexed: 12/08/2023] Open
Abstract
Antibiotics have shown less efficiency against resistance of pathogenic microorganisms. As a result, research centers have sought therapeutic alternatives against multidrug resistance of bacteria to antibiotics, one of which is using plant extracts. Bamboo extracts are used for several medicinal purposes. This study aimed to evaluate the antibacterial potential of hydroalcoholic extracts of culms and leaves of the species Guadua aff. lynnclarkiae on strains of Staphylococcus aureus, Streptococcus pneumoniae, and Klebsiella pneumoniae. We evaluated the minimum inhibitory concentration (MIC) and the minimum bactericidal concentration (MBC). Only the leaves of G. aff. lynnclarkiae showed a bactericidal effect for all tested strains with MBC ranging from 1.55 mg ml-1 to 25 mg ml-1. The culms had bacteriostatic action with MIC ranging from 1.55 mg ml-1 to 6.25 mg ml-1, and bactericidal action at the concentration of 6.25 mg ml-1 only for S. aureus. This study provides bases for the use of this Amazonian native bamboo in bioprospecting.
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Affiliation(s)
- G S Sola
- Universidade Federal do Acre, Centro de Ciências Biológicas e da Natureza, Rio Branco, AC, Brasil
| | - M R N Costa
- Universidade Federal do Acre, Programa de Pós-graduação em Ciência, Inovação e Tecnologia para a Amazônia, Rio Branco, AC, Brasil
| | - T A Silva
- Universidade Federal do Acre, Programa de Pós-graduação em Ciência, Inovação e Tecnologia para a Amazônia, Rio Branco, AC, Brasil
| | - M R L Costa
- Universidade Federal do Acre, Programa de Pós-graduação em Ciência, Inovação e Tecnologia para a Amazônia, Rio Branco, AC, Brasil
| | - R R Souza
- Universidade Federal do Acre, Programa de Pós-graduação em Ciência, Inovação e Tecnologia para a Amazônia, Rio Branco, AC, Brasil
| | - L P Peters
- Universidade Federal do Acre, Centro de Ciências da Saúde e Desporto, Rio Branco, AC, Brasil
| | - C M Carvalho
- Universidade Federal do Acre, Centro de Ciências Biológicas e da Natureza, Rio Branco, AC, Brasil
| | - B K A Silva
- Universidade Federal do Acre, Centro de Ciências Biológicas e da Natureza, Rio Branco, AC, Brasil
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3
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Santos MDS, Lima VTM, Barrioni BR, Vago JP, de Arruda JAA, Prazeres PD, Amaral FA, Silva TA, Macari S. Targeting phosphatidylinositol-3-kinase for inhibiting maxillary bone resorption. J Cell Physiol 2023; 238:2651-2667. [PMID: 37814842 DOI: 10.1002/jcp.31121] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 08/23/2023] [Accepted: 08/28/2023] [Indexed: 10/11/2023]
Abstract
Previous studies have suggested a role of phosphatidylinositol-3-kinase gamma (PI3Kγ) in bone remodeling, but the mechanism remains undefined. Here, we explored the contribution of PI3Kγ in the resorption of maxillary bone and dental roots using models of orthodontic tooth movement (OTM), orthodontic-induced inflammatory root resorption, and rapid maxillary expansion (RME). PI3Kγ-deficient mice (PI3Kγ-/- ), mice with loss of PI3Kγ kinase activity (PI3KγKD/KD ) and C57BL/6 mice treated with a PI3Kγ inhibitor (AS605240) and respective controls were used. The maxillary bones of PI3Kγ-/- , PI3KγKD/KD , and C57BL/6 mice treated with AS605240 showed an improvement of bone quality compared to their controls, resulting in reduction of the OTM and RME in all experimental groups. PI3Kγ-/- mice exhibited increased root volume and decreased odontoclasts counts. Consistently, the pharmacological blockade or genetic deletion of PI3K resulted in increased numbers of osteoblasts and reduction in osteoclasts during OTM. There was an augmented expression of Runt-related transcription factor 2 (Runx2) and alkaline phosphatase (Alp), a reduction of interleukin-6 (Il-6), as well as a lack of responsiveness of receptor activator of nuclear factor kappa-Β (Rank) in PI3Kγ-/- and PI3KγKD/KD mice compared to control mice. The maxillary bones of PI3Kγ-/- animals showed reduced p-Akt expression. In vitro, bone marrow cells treated with AS605240 and cells from PI3Kγ-/- mice exhibited significant augment of osteoblast mineralization and less osteoclast differentiation. The PI3Kγ/Akt axis is pivotal for bone remodeling by providing negative and positive signals for the differentiation of osteoclasts and osteoblasts, respectively.
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Affiliation(s)
- Mariana de S Santos
- Department of Morphology, Biological Science Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Virgínia T M Lima
- Department of Restorative Dentistry, Faculty of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Breno R Barrioni
- Department of Metallurgical and Materials Engineering, Faculty of Engineering, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Juliana P Vago
- Department of Morphology, Biological Science Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - José Alcides A de Arruda
- Department of Oral Surgery, Pathology and Clinical Dentistry, Faculty of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Pedro D Prazeres
- Department of Pathology, Biological Science Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Flávio A Amaral
- Department of Morphology, Biological Science Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- Department of Biochemistry and Immunology, Biological Science Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Tarcília A Silva
- Department of Oral Surgery, Pathology and Clinical Dentistry, Faculty of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Soraia Macari
- Department of Morphology, Biological Science Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- Department of Restorative Dentistry, Faculty of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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4
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Marangon BB, Magalhães IB, Pereira ASAP, Silva TA, Gama RCN, Ferreira J, Castro JS, Assis LR, Lorentz JF, Calijuri ML. Emerging microalgae-based biofuels: Technology, life-cycle and scale-up. Chemosphere 2023; 326:138447. [PMID: 36940833 DOI: 10.1016/j.chemosphere.2023.138447] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 02/23/2023] [Accepted: 03/17/2023] [Indexed: 06/18/2023]
Abstract
Microalgae biomass is a versatile feedstock with a variable composition that can be submitted to several conversion routes. Considering the increasing energy demand and the context of third-generation biofuels, algae can fulfill the increasing global demand for energy with the additional benefit of environmental impact mitigation. While biodiesel and biogas are widely consolidated and reviewed, emerging algal-based biofuels such as biohydrogen, biokerosene, and biomethane are cutting-edge technologies in earlier stages of development. In this context, the present study covers their theoretical and practical conversion technologies, environmental hotspots, and cost-effectiveness. Scaling-up considerations are also addressed, mainly through Life Cycle Assessment results and interpretation. Discussions on the current literature for each biofuel directs researchers towards challenges such as optimized pretreatment methods for biohydrogen and optimized catalyst for biokerosene, besides encouraging pilot and industrial scale studies for all biofuels. While presenting studies for larger scales, biomethane still needs continuous operation results to consolidate the technology further. Additionally, environmental improvements on all three routes are discussed in light of life-cycle models, highlighting the ample research opportunities on wastewater-grown microalgae biomass.
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Affiliation(s)
- B B Marangon
- Department of Civil Engineering, Federal University of Viçosa (Universidade Federal de Viçosa/UFV), Av. Peter Henry Rolfs, S/n, Campus Universitário, Viçosa, Minas Gerais, 36570-900, Brazil.
| | - I B Magalhães
- Department of Civil Engineering, Federal University of Viçosa (Universidade Federal de Viçosa/UFV), Av. Peter Henry Rolfs, S/n, Campus Universitário, Viçosa, Minas Gerais, 36570-900, Brazil.
| | - A S A P Pereira
- Department of Civil Engineering, Federal University of Viçosa (Universidade Federal de Viçosa/UFV), Av. Peter Henry Rolfs, S/n, Campus Universitário, Viçosa, Minas Gerais, 36570-900, Brazil.
| | - T A Silva
- Department of Civil Engineering, Federal University of Viçosa (Universidade Federal de Viçosa/UFV), Av. Peter Henry Rolfs, S/n, Campus Universitário, Viçosa, Minas Gerais, 36570-900, Brazil.
| | - R C N Gama
- Department of Civil Engineering, Federal University of Viçosa (Universidade Federal de Viçosa/UFV), Av. Peter Henry Rolfs, S/n, Campus Universitário, Viçosa, Minas Gerais, 36570-900, Brazil.
| | - J Ferreira
- Department of Civil Engineering, Federal University of Viçosa (Universidade Federal de Viçosa/UFV), Av. Peter Henry Rolfs, S/n, Campus Universitário, Viçosa, Minas Gerais, 36570-900, Brazil.
| | - J S Castro
- Department of Civil Engineering, Federal University of Viçosa (Universidade Federal de Viçosa/UFV), Av. Peter Henry Rolfs, S/n, Campus Universitário, Viçosa, Minas Gerais, 36570-900, Brazil.
| | - L R Assis
- Department of Civil Engineering, Federal University of Viçosa (Universidade Federal de Viçosa/UFV), Av. Peter Henry Rolfs, S/n, Campus Universitário, Viçosa, Minas Gerais, 36570-900, Brazil.
| | - J F Lorentz
- Department of Civil Engineering, Federal University of Viçosa (Universidade Federal de Viçosa/UFV), Av. Peter Henry Rolfs, S/n, Campus Universitário, Viçosa, Minas Gerais, 36570-900, Brazil.
| | - M L Calijuri
- Department of Civil Engineering, Federal University of Viçosa (Universidade Federal de Viçosa/UFV), Av. Peter Henry Rolfs, S/n, Campus Universitário, Viçosa, Minas Gerais, 36570-900, Brazil.
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5
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Gomes NA, Valle IB, Gleber‐Netto FO, Silva TA, Oliveira HMDC, Oliveira RF, Ferreira LDAQ, Castilho LS, Reis PHRG, Prazeres PHDM, Menezes GB, Magalhães CS, Mesquita RA, Marques MM, Birbrair A, Diniz IMA. Cover Image, Volume 237, Number 4, April 2022. J Cell Physiol 2022. [DOI: 10.1002/jcp.30765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Natália A. Gomes
- Department of Restorative Dentistry, School of Dentistry Universidade Federal de Minas Gerais Belo Horizonte Brazil
| | - Isabella B. Valle
- Department of Oral Pathology and Surgery, School of Dentistry Universidade Federal de Minas Gerais Belo Horizonte Brazil
| | - Frederico O. Gleber‐Netto
- Department of Head & Neck Surgery The University of Texas MD Anderson Cancer Center Houston Texas USA
| | - Tarcília A. Silva
- Department of Oral Pathology and Surgery, School of Dentistry Universidade Federal de Minas Gerais Belo Horizonte Brazil
| | | | - Rafaela F. Oliveira
- Department of Restorative Dentistry, School of Dentistry Universidade Federal de Minas Gerais Belo Horizonte Brazil
| | - Luiza de Almeida Q. Ferreira
- Department of Restorative Dentistry, School of Dentistry Universidade Federal de Minas Gerais Belo Horizonte Brazil
| | - Lia S. Castilho
- Department of Restorative Dentistry, School of Dentistry Universidade Federal de Minas Gerais Belo Horizonte Brazil
| | | | - Pedro H. D. M. Prazeres
- Departament of Pathology, Biological Sciences Institute Universidade Federal de Minas Gerais Belo Horizonte Brazil
| | - Gustavo B. Menezes
- Department of Morphology, Biological Sciences Institute Universidade Federal de Minas Gerais Belo Horizonte Brazil
| | - Cláudia S. Magalhães
- Department of Restorative Dentistry, School of Dentistry Universidade Federal de Minas Gerais Belo Horizonte Brazil
| | - Ricardo A. Mesquita
- Department of Head & Neck Surgery The University of Texas MD Anderson Cancer Center Houston Texas USA
| | - Márcia M. Marques
- Postgraduation Program in Dentistry Ibirapuera University São Paulo Brazil
| | - Alexander Birbrair
- Departament of Pathology, Biological Sciences Institute Universidade Federal de Minas Gerais Belo Horizonte Brazil
| | - Ivana M. A. Diniz
- Department of Restorative Dentistry, School of Dentistry Universidade Federal de Minas Gerais Belo Horizonte Brazil
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6
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Oliveira RF, Marquiore LF, Gomes CBS, de Abreu PTR, Ferreira LAQ, Diniz LA, Gomes NA, Jácome‐Santos H, Moreno A, Macari S, Mesquita RA, Silva TA, Marques MM, Diniz IMA. Interplay between epithelial and mesenchymal cells unveils essential proinflammatory and pro‐resolutive mediators modulated by photobiomodulation therapy at 660 nm. Wound Repair Regen 2022; 30:345-356. [DOI: 10.1111/wrr.13010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 03/04/2022] [Accepted: 03/27/2022] [Indexed: 11/28/2022]
Affiliation(s)
- Rafaela F. Oliveira
- Department of Restorative Dentistry School of Dentistry, Universidade Federal de Minas Gerais Belo Horizonte Minas Gerais Brazil
| | - Larissa F. Marquiore
- Department of Restorative Dentistry School of Dentistry, Universidade Federal de Minas Gerais Belo Horizonte Minas Gerais Brazil
| | - Cristopher B. S. Gomes
- Department of Restorative Dentistry School of Dentistry, Universidade Federal de Minas Gerais Belo Horizonte Minas Gerais Brazil
| | - Priscila T. R. de Abreu
- Department of Oral Pathology and Surgery School of Dentistry, Universidade Federal de Minas Gerais Belo Horizonte Minas Gerais Brazil
| | - Luiza A. Q. Ferreira
- Department of Restorative Dentistry School of Dentistry, Universidade Federal de Minas Gerais Belo Horizonte Minas Gerais Brazil
| | - Luiza A. Diniz
- Department of Restorative Dentistry School of Dentistry, Universidade Federal de Minas Gerais Belo Horizonte Minas Gerais Brazil
| | - Natália A. Gomes
- Department of Restorative Dentistry School of Dentistry, Universidade Federal de Minas Gerais Belo Horizonte Minas Gerais Brazil
| | - Humberto Jácome‐Santos
- Department of Restorative Dentistry School of Dentistry, Universidade Federal de Minas Gerais Belo Horizonte Minas Gerais Brazil
- Department of Oral Pathology and Surgery School of Dentistry, Universidade Federal de Minas Gerais Belo Horizonte Minas Gerais Brazil
| | - Amália Moreno
- Department of Oral Pathology and Surgery School of Dentistry, Universidade Federal de Minas Gerais Belo Horizonte Minas Gerais Brazil
| | - Soraia Macari
- Department of Restorative Dentistry School of Dentistry, Universidade Federal de Minas Gerais Belo Horizonte Minas Gerais Brazil
| | - Ricardo A. Mesquita
- Department of Oral Pathology and Surgery School of Dentistry, Universidade Federal de Minas Gerais Belo Horizonte Minas Gerais Brazil
| | - Tarcília A. Silva
- Department of Oral Pathology and Surgery School of Dentistry, Universidade Federal de Minas Gerais Belo Horizonte Minas Gerais Brazil
| | - Márcia M. Marques
- Post‐Graduation Program in Dentistry, Ibirapuera University São Paulo São Paulo Brazil
| | - Ivana M. A. Diniz
- Department of Restorative Dentistry School of Dentistry, Universidade Federal de Minas Gerais Belo Horizonte Minas Gerais Brazil
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7
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Gomes NA, do Valle IB, Gleber-Netto FO, Silva TA, Oliveira HMDC, de Oliveira RF, Ferreira LDAQ, Castilho LS, Reis PHRG, Prazeres PHDM, Menezes GB, de Magalhães CS, Mesquita RA, Marques MM, Birbrair A, Diniz IMA. Nestin and NG2 transgenes reveal two populations of perivascular cells stimulated by photobiomodulation. J Cell Physiol 2022; 237:2198-2210. [PMID: 35040139 DOI: 10.1002/jcp.30680] [Citation(s) in RCA: 4] [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: 07/04/2021] [Revised: 12/14/2021] [Accepted: 01/04/2022] [Indexed: 12/20/2022]
Abstract
Pericytes and glial cells are known to collaborate in dental pulp tissue repair. Cell-based therapies that stimulate these stromal components may be of therapeutic relevance for partially vital dental pulp conditions. This study aimed to examine the early effect of photobiomodulation (PBM) in pericytes from experimentally injured pulp tissue. To accomplish this, we used the Nestin-GFP/NG2-DsRed mice, which could allow the identification of distinct pericyte phenotypes. We discovered the presence of two pericytes subsets within the dental pulp, the Nestin + NG2+ (type-2) and Nestin- NG2+ (type-1). Upon injury, PBM treatment led to a significant increase in Nestin+ cells and pericytes. This boost was mainly conferred by the more committed pericyte subset (NestinNG2+ ). PBM also stimulated terminal blood vessels sprouting adjacent to the injury site while maintaining signs of pulp vitality. In vitro, PBM induced VEGF upregulation, improved dental pulp cells proliferation and migration, and favored their mineralization potential. Herein, different subsets of perivascular cells were unveiled in the pulp tissue. PBM enhanced not only NG2+ cells but nestin-expressing progenitors in the injured dental pulp.
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Affiliation(s)
- Natália A Gomes
- Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Isabella B do Valle
- Department of Oral Pathology and Surgery, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Frederico O Gleber-Netto
- Department of Head & Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Tarcília A Silva
- Department of Oral Pathology and Surgery, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | | | - Rafaela F de Oliveira
- Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Luiza de Almeida Q Ferreira
- Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Lia S Castilho
- Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Paulo H R G Reis
- Ohlab, Associação Mineira de Reabilitação, Belo Horizonte, Brazil
| | - Pedro H D M Prazeres
- Departament of Pathology, Biological Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Gustavo B Menezes
- Department of Morphology, Biological Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Cláudia S de Magalhães
- Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Ricardo A Mesquita
- Department of Head & Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Márcia M Marques
- Postgraduation Program in Dentistry, Ibirapuera University, São Paulo, Brazil
| | - Alexander Birbrair
- Departament of Pathology, Biological Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Ivana M A Diniz
- Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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8
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Silva MKS, Silva TA, Silva JAF, Costa LDA, Leal MLE, Bezerra RS, Costa HMS, Freitas-Júnior ACV. Carangoides bartholomaei (Cuvier, 1833) stomach: a source of aspartic proteases for industrial and biotechnological applications. BRAZ J BIOL 2021; 82:e234413. [PMID: 34105658 DOI: 10.1590/1519-6984.234413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 08/02/2020] [Indexed: 11/22/2022] Open
Abstract
The viscera and other residues from fish processing are commonly discarded by the fishing industry. These by-products can be a source of digestive enzymes with industrial and biotechnological potential. In this study, we aimed at the extraction, characterization, and application of acidic proteases from the stomach of Carangoides bartholomaei (Cuvier, 1833). A crude extract from the stomachs was obtained and submitted to a partial purification process by salting-out, which obtained a Purified Extract (PE) with a specific proteolytic activity of 54.0 U⋅mg-1. A purification of 1.9 fold and a yield of 41% were obtained. The PE presents two isoforms of acidic proteases and a maximum proteolytic activity at 45 °C and pH 2.0. The PE acidic proteolytic activity was stable in the pH range of 1.5 to 7.0 and temperature from 25 °C to 50 °C. Purified Extract kept 35% of its proteolytic activity at the presence of NaCl 15% (m/v) but was totally inhibited by pepstatin A. Purified Extract aspartic proteases presented high activity in the presence of heavy metals such as Cd2+, Hg2+, Pb2+, Al3+, and Cu2+. The utilization of PE as an enzymatic addictive in the collagen extraction from Nile tilapia scales has doubled the process yield. The results indicate the potential of these aspartic proteases for industrial and biotechnological applications.
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Affiliation(s)
- M K S Silva
- Universidade Federal da Paraíba - UFPB, Centro de Ciências Exatas e da Natureza, Departamento de Biologia Molecular, Laboratório de Biomoléculas de Organismos Aquáticos, João Pessoa, PB, Brasil.,Universidade Federal da Paraíba - UFPB, Centro de Ciências Exatas e da Natureza, Programa de Pós-graduação em Biologia Celular e Molecular, João Pessoa, PB, Brasil
| | - T A Silva
- Universidade Federal da Paraíba - UFPB, Centro de Ciências Exatas e da Natureza, Departamento de Biologia Molecular, Laboratório de Biomoléculas de Organismos Aquáticos, João Pessoa, PB, Brasil.,Universidade Federal da Paraíba - UFPB, Centro de Ciências Exatas e da Natureza, Programa de Pós-graduação em Biologia Celular e Molecular, João Pessoa, PB, Brasil
| | - J A F Silva
- Universidade Federal da Paraíba - UFPB, Centro de Ciências Exatas e da Natureza, Departamento de Biologia Molecular, Laboratório de Biomoléculas de Organismos Aquáticos, João Pessoa, PB, Brasil.,Universidade Federal da Paraíba - UFPB, Centro de Ciências Exatas e da Natureza, Programa de Pós-graduação em Biologia Celular e Molecular, João Pessoa, PB, Brasil
| | - L D A Costa
- Universidade Federal da Paraíba - UFPB, Centro de Ciências Exatas e da Natureza, Departamento de Biologia Molecular, Laboratório de Biomoléculas de Organismos Aquáticos, João Pessoa, PB, Brasil
| | - M L E Leal
- Universidade Federal da Paraíba - UFPB, Centro de Ciências Exatas e da Natureza, Departamento de Biologia Molecular, Laboratório de Biomoléculas de Organismos Aquáticos, João Pessoa, PB, Brasil
| | - R S Bezerra
- Universidade Federal de Pernambuco - UFPE, Centro de Biociências, Departamento de Bioquímica, Laboratório de Enzimologia, Recife, PE, Brasil
| | - H M S Costa
- Universidade Federal da Paraíba - UFPB, Centro de Ciências Exatas e da Natureza, Departamento de Biologia Molecular, Laboratório de Biomoléculas de Organismos Aquáticos, João Pessoa, PB, Brasil.,Universidade Federal da Paraíba - UFPB, Centro de Ciências Exatas e da Natureza, Programa de Pós-graduação em Biologia Celular e Molecular, João Pessoa, PB, Brasil
| | - A C V Freitas-Júnior
- Universidade Federal da Paraíba - UFPB, Centro de Ciências Exatas e da Natureza, Departamento de Biologia Molecular, Laboratório de Biomoléculas de Organismos Aquáticos, João Pessoa, PB, Brasil.,Universidade Federal da Paraíba - UFPB, Centro de Ciências Exatas e da Natureza, Programa de Pós-graduação em Biologia Celular e Molecular, João Pessoa, PB, Brasil
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9
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Silva JAF, Silva MKS, Silva TA, Costa LDA, Leal MLE, Bezerra RS, Costa HMS, Freitas-Júnior ACV. Obtainment and characterization of digestive aspartic proteases from the fish Caranx hippos (Linnaeus, 1766). BRAZ J BIOL 2021; 82:e234500. [PMID: 33787732 DOI: 10.1590/1519-6984.234500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 07/25/2020] [Indexed: 11/21/2022] Open
Abstract
This work aimed to obtain aspartic proteases of industrial and biotechnological interest from the stomach of the crevalle jack fish (Caranx hippos). In order to do so, a crude extract (CE) of the stomach was obtained and subjected to a partial purification by salting-out, which resulted in the enzyme extract (EE) obtainment. EE proteases were characterized physicochemically and by means of zymogram. In addition, the effect of chemical agents on their activity was also assessed. By means of salting-out it was possible to obtain a purification of 1.6 times with a yield of 49.4%. Two acid proteases present in the EE were observed in zymogram. The optimum temperature and thermal stability for EE acidic proteases were 55 ºC and 45 °C, respectively. The optimum pH and pH stability found for these enzymes were pH 1.5 and 7.0, respectively. Total inhibition of EE acid proteolytic activity was observed in the presence of pepstatin A. dithiothreitol (DTT) and Ca2+ did not promote a significant effect on enzyme activity. In the presence of heavy metals, such as Al3+, Cd2+ and Hg2+, EE acidic proteases showed more than 70% of their enzymatic activity. The results show that it is possible to obtain, from the stomach of C. hippos, aspartic proteases with high proteolytic activity and characteristics that demonstrate potential for industrial and biotechnological applications.
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Affiliation(s)
- J A F Silva
- Universidade Federal da Paraíba - UFPB, Laboratório de Biomoléculas de Organismos Aquáticos, Departamento de Biologia Molecular, Centro de Ciências Exatas e da Natureza, Cidade Universitária, João Pessoa, PB, Brasil.,Universidade Federal da Paraíba - UFPB, Centro de Ciências Exatas e da Natureza, Programa de Pós-graduação em Biologia Celular e Molecular, Cidade Universitária, João Pessoa, PB, Brasil
| | - M K S Silva
- Universidade Federal da Paraíba - UFPB, Laboratório de Biomoléculas de Organismos Aquáticos, Departamento de Biologia Molecular, Centro de Ciências Exatas e da Natureza, Cidade Universitária, João Pessoa, PB, Brasil.,Universidade Federal da Paraíba - UFPB, Centro de Ciências Exatas e da Natureza, Programa de Pós-graduação em Biologia Celular e Molecular, Cidade Universitária, João Pessoa, PB, Brasil
| | - T A Silva
- Universidade Federal da Paraíba - UFPB, Laboratório de Biomoléculas de Organismos Aquáticos, Departamento de Biologia Molecular, Centro de Ciências Exatas e da Natureza, Cidade Universitária, João Pessoa, PB, Brasil.,Universidade Federal da Paraíba - UFPB, Centro de Ciências Exatas e da Natureza, Programa de Pós-graduação em Biologia Celular e Molecular, Cidade Universitária, João Pessoa, PB, Brasil
| | - L D A Costa
- Universidade Federal da Paraíba - UFPB, Laboratório de Biomoléculas de Organismos Aquáticos, Departamento de Biologia Molecular, Centro de Ciências Exatas e da Natureza, Cidade Universitária, João Pessoa, PB, Brasil
| | - M L E Leal
- Universidade Federal da Paraíba - UFPB, Laboratório de Biomoléculas de Organismos Aquáticos, Departamento de Biologia Molecular, Centro de Ciências Exatas e da Natureza, Cidade Universitária, João Pessoa, PB, Brasil
| | - R S Bezerra
- Universidade Federal de Pernambuco - UFPE, Centro de Biociências, Departamento de Bioquímica, Laboratório de Enzimologia, Cidade Universitária, Recife, PE, Brasil
| | - H M S Costa
- Universidade Federal da Paraíba - UFPB, Laboratório de Biomoléculas de Organismos Aquáticos, Departamento de Biologia Molecular, Centro de Ciências Exatas e da Natureza, Cidade Universitária, João Pessoa, PB, Brasil.,Universidade Federal da Paraíba - UFPB, Centro de Ciências Exatas e da Natureza, Programa de Pós-graduação em Biologia Celular e Molecular, Cidade Universitária, João Pessoa, PB, Brasil
| | - A C V Freitas-Júnior
- Universidade Federal da Paraíba - UFPB, Laboratório de Biomoléculas de Organismos Aquáticos, Departamento de Biologia Molecular, Centro de Ciências Exatas e da Natureza, Cidade Universitária, João Pessoa, PB, Brasil.,Universidade Federal da Paraíba - UFPB, Centro de Ciências Exatas e da Natureza, Programa de Pós-graduação em Biologia Celular e Molecular, Cidade Universitária, João Pessoa, PB, Brasil
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10
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Moura MF, Cota LOM, Silva TA, Cortelli SC, Ferreira GA, López MM, Cortelli JR, Costa FO. Correction to: Clinical and microbiological effects of non-surgical periodontal treatment in individuals with rheumatoid arthritis: a controlled clinical trial. Odontology 2020; 109:494-495. [PMID: 33296048 DOI: 10.1007/s10266-020-00579-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Marcela F Moura
- Department of Dental Clinics, Oral Pathology, and Oral Surgery, Department of Periodontology, Faculty of Dentistry, Federal University of Minas Gerais, Antônio Carlos Avenue, 6627, Pampulha, PO Box 359, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Luís O M Cota
- Department of Dental Clinics, Oral Pathology, and Oral Surgery, Department of Periodontology, Faculty of Dentistry, Federal University of Minas Gerais, Antônio Carlos Avenue, 6627, Pampulha, PO Box 359, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Tarcília A Silva
- Department of Dental Clinics, Oral Pathology, and Oral Surgery, Department of Periodontology, Faculty of Dentistry, Federal University of Minas Gerais, Antônio Carlos Avenue, 6627, Pampulha, PO Box 359, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | | | - Gilda A Ferreira
- Faculty of Medicine Federal, University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Marina M López
- Department of Dental Clinics, Oral Pathology, and Oral Surgery, Department of Periodontology, Faculty of Dentistry, Federal University of Minas Gerais, Antônio Carlos Avenue, 6627, Pampulha, PO Box 359, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - José R Cortelli
- Faculty of Dentistry, University of Taubaté, São Paulo, Brazil
| | - Fernando O Costa
- Department of Dental Clinics, Oral Pathology, and Oral Surgery, Department of Periodontology, Faculty of Dentistry, Federal University of Minas Gerais, Antônio Carlos Avenue, 6627, Pampulha, PO Box 359, Belo Horizonte, Minas Gerais, 31270-901, Brazil.
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11
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Moura MF, Cota LOM, Silva TA, Cortelli SC, Ferreira GA, López MM, Cortelli JR, Costa FO. Clinical and microbiological effects of non-surgical periodontal treatment in individuals with rheumatoid arthritis: a controlled clinical trial. Odontology 2020; 109:484-493. [PMID: 33145632 DOI: 10.1007/s10266-020-00566-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 07/15/2020] [Accepted: 10/18/2020] [Indexed: 12/12/2022]
Abstract
The effect of periodontal treatment on clinical, microbiological and serological parameters of patients with rheumatoid arthritis (RA) are scarce and controversial. The aim of this study was to investigate the influence of non-surgical periodontal treatment on clinical periodontal status, subgingival bacterial levels of Aggregatibacter actinomycetemcomitans, Porphyromonas gingivalis, Tannerella forsythia, Treponema denticola and RA activity through a controlled clinical trial on individuals with RA and periodontitis (PE). From a convenience sample, 107 individuals were considered eligible and consecutively allocated in four groups: (1) individuals without PE and RA (- PE-RA, n = 30); (2) individuals without PE and with RA (- PE + RA, n = 23); (3) individuals with PE and RA (+ PE + RA, n = 24); and (4) individuals with PE and without RA (+ PE-RA, n = 30). Full-mouth periodontal clinical examinations, microbiological analysis and Disease Activity Score (DAS-28) evaluations were performed at baseline (T1) and 45 days after non-surgical periodontal treatment (T2). At T1, individuals + PE + RA showed greater severity of PE than + PE-RA individuals. At T2, significant reductions were observed in all periodontal clinical parameters in both groups (p < 0.001) with a significant reduction in DAS-28 in + PE + RA (p = 0.011). Individuals + PE-RA and + PE-RA showed significant reductions for all bacteria (p < 0.001). Additionally, P. gingivalis demonstrated an expressively significant reduction in + PE + RA (p < 0.001). Non-surgical periodontal treatment was effective on improving the clinical periodontal condition, improving the RA clinical status and reducing the presence of periodontal pathogens. Brazilian Registry of Clinical Trials (ReBEC) protocol #RBR-8g2bc8 ( https://www.ensaiosclinicos.gov.br/rg/RBR-8g2bc8/ ).
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Affiliation(s)
- Marcela F Moura
- Department of Dental Clinics, Oral Pathology, and Oral Surgery, Department of Periodontology, Faculty of Dentistry, Federal University of Minas Gerais, Antônio Carlos Avenue, 6627, Pampulha, PO Box 359, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Luís O M Cota
- Department of Dental Clinics, Oral Pathology, and Oral Surgery, Department of Periodontology, Faculty of Dentistry, Federal University of Minas Gerais, Antônio Carlos Avenue, 6627, Pampulha, PO Box 359, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Tarcília A Silva
- Department of Dental Clinics, Oral Pathology, and Oral Surgery, Department of Periodontology, Faculty of Dentistry, Federal University of Minas Gerais, Antônio Carlos Avenue, 6627, Pampulha, PO Box 359, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | | | - Gilda A Ferreira
- Faculty of Medicine Federal, University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Marina M López
- Department of Dental Clinics, Oral Pathology, and Oral Surgery, Department of Periodontology, Faculty of Dentistry, Federal University of Minas Gerais, Antônio Carlos Avenue, 6627, Pampulha, PO Box 359, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - José R Cortelli
- Faculty of Dentistry, University of Taubaté, São Paulo, Brazil
| | - Fernando O Costa
- Department of Dental Clinics, Oral Pathology, and Oral Surgery, Department of Periodontology, Faculty of Dentistry, Federal University of Minas Gerais, Antônio Carlos Avenue, 6627, Pampulha, PO Box 359, Belo Horizonte, Minas Gerais, 31270-901, Brazil.
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12
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Pereira LJ, Macari S, Coimbra CC, Pereira TDSF, Barrioni BR, Gomez RS, Silva TA, Paiva SM. Aerobic and resistance training improve alveolar bone quality and interferes with bone-remodeling during orthodontic tooth movement in mice. Bone 2020; 138:115496. [PMID: 32585320 DOI: 10.1016/j.bone.2020.115496] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [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] [Received: 04/01/2020] [Revised: 06/18/2020] [Accepted: 06/19/2020] [Indexed: 12/27/2022]
Abstract
The direct effects of physical activity on long bones are already recognized. However, little information is available regarding distant osseous sites, such as maxillary bone. We evaluated the influence of physical training on alveolar bone quality, with and without mechanically-induced load during orthodontic tooth movement in mice. Forty-two C57BL/6 mice were divided into sedentary, resistance and aerobic training groups. Training period lasted for eight weeks and mechanical loads (orthodontic tooth movement - OTM) were applied during the last 14 days of training. Both types of training enhanced the quality of maxillary bone, increasing bone mineral density (BMD), trabecular bone volume (BV) and bone volume/total volume ratio (BV/TV). OTM significantly reduced in trained groups. Consistently, the number of osteoblasts increased whereas the number of osteoclasts decreased on the OTM side in trained groups in comparison to the sedentary group. IGF-1, RUNX2 and OPG genes expression were also increased. The RANKL/OPG ratio and IL-6 expression were reduced in the maxillary bone. Similar results were verified in the femoral bone. In line with these findings, physical training resulted in a decrease of osteoclast differentiation from femoral bone marrow; as well as the force required to fracture the tibia of trained animals increased. Physical training also caused EDL muscle hypertrophy and increased expression of IGF-1 and IGF-1/Myostatin ratio in the gastrocnemius muscle, whereas FNDC5 gene expression was similar among groups in femur, but decreased in alveolar bone submitted to OTM. In conclusion, physical training increased bone quality, not only on long bones, but also in a distant site such as the maxilla. Differences were more evident in the course of maxillary mechanical loading. Mechanisms involve systemic and local effects on bone cells and target molecules as RANKL, OPG, IL-6 and IGF-1.
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Affiliation(s)
- Luciano J Pereira
- Universidade Federal de Minas Gerais - UFMG, Belo Horizonte, Brazil; Universidade Federal de Lavras - UFLA, Lavras, Brazil.
| | - Soraia Macari
- Universidade Federal de Minas Gerais - UFMG, Belo Horizonte, Brazil
| | | | | | | | | | - Tarcília A Silva
- Universidade Federal de Minas Gerais - UFMG, Belo Horizonte, Brazil
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13
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Boriollo MFG, Alves VE, Silva TA, Silva JJ, Barros GBS, Dias CTS, Höfling JF, Oliveira NMS. Decrease of the DXR-induced genotoxicity and nongenotoxic effects of Theobroma cacao revealed by micronucleus assay. BRAZ J BIOL 2020; 81:268-277. [PMID: 32696851 DOI: 10.1590/1519-6984.223687] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 11/04/2019] [Indexed: 11/22/2022] Open
Abstract
This study evaluated the genotoxicity of lyophilized glycolic extract of Theobroma cacao Linné seeds (TCL), using the micronucleus assay in bone marrow of mice. The interaction between TCL and doxorubicin (DXR) was also analyzed. Experimental groups were evaluated 24-48 h after treatment with N-Nitroso-N-ethylurea (NEU: 50 mg/kg), DXR (5 mg/kg), NaCl (145 mM), TCL (0.5-2 g/kg), and TCL (2 g/kg) in combination with DXR (antigenotoxic assays). Analysis of micronucleated polychromatic erythrocytes (MNPCEs) showed no significant differences between all the treatment doses of TCL and NaCl control. Mice experimentally treated with DXR and NEU significantly induced MNPCEs. However, a significant reduction of MNPCEs was also observed when TCL was administered in combination with the chemotherapeutic agent DXR. The analysis of the PCE/NCE ratio revealed no significant differences between the NaCl control, all doses of TCL, and DXR. However, there were significant differences in the PCE/NCE ratio between positive NEU control and all other treatments. The PCE/NCE ratio observed after treatment with TCL and DXR showed significant differences and intermediate values to controls (NaCl and NEU). This study suggests absence of genotoxicity and cytotoxicity of TCL, regardless of dose, sex, and time. TCL reduced genotoxic effects induced by DXR, suggesting potential antigenotoxic effects.
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Affiliation(s)
- M F G Boriollo
- Laboratório de Genética Molecular, Departamento de Diagnóstico Oral, Faculdade de Odontologia de Piracicaba - FOP, Universidade Estadual de Campinas - UNICAMP, Av. Limeira, 901, Bairro Areião, CEP 13414-903, Piracicaba, SP, Brasil
| | - V E Alves
- Laboratório de Farmacogenética e Biologia Molecular, Faculdade de Ciências Médicas, Universidade José do Rosário Vellano - UNIFENAS, Rodovia MG 179, Km 0, Campus Universitário, CEP 37132-440, Alfenas, MG, Brasil
| | - T A Silva
- Laboratório de Farmacogenética e Biologia Molecular, Faculdade de Ciências Médicas, Universidade José do Rosário Vellano - UNIFENAS, Rodovia MG 179, Km 0, Campus Universitário, CEP 37132-440, Alfenas, MG, Brasil
| | - J J Silva
- Laboratório de Genética Molecular, Departamento de Diagnóstico Oral, Faculdade de Odontologia de Piracicaba - FOP, Universidade Estadual de Campinas - UNICAMP, Av. Limeira, 901, Bairro Areião, CEP 13414-903, Piracicaba, SP, Brasil
| | - G B S Barros
- Laboratório de Farmacogenética e Biologia Molecular, Faculdade de Ciências Médicas, Universidade José do Rosário Vellano - UNIFENAS, Rodovia MG 179, Km 0, Campus Universitário, CEP 37132-440, Alfenas, MG, Brasil
| | - C T S Dias
- Departamento de Ciências Exatas, Escola de Agricultura "Luiz de Queiroz" - ESALQ, Universidade de são Paulo - USP, Av. Pádua Dias, 11, CEP 13418-900, Piracicaba, SP, Brasil
| | - J F Höfling
- Laboratório de Genética Molecular, Departamento de Diagnóstico Oral, Faculdade de Odontologia de Piracicaba - FOP, Universidade Estadual de Campinas - UNICAMP, Av. Limeira, 901, Bairro Areião, CEP 13414-903, Piracicaba, SP, Brasil
| | - N M S Oliveira
- Laboratório de Farmacogenética e Biologia Molecular, Faculdade de Ciências Médicas, Universidade José do Rosário Vellano - UNIFENAS, Rodovia MG 179, Km 0, Campus Universitário, CEP 37132-440, Alfenas, MG, Brasil
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14
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Rocha AL, Oliveira SR, Souza AF, Travassos DV, Abreu LG, Ribeiro DD, Silva TA. Direct oral anticoagulants in oral surgery: a prospective cohort. ACTA ACUST UNITED AC 2020; 69:384-393. [PMID: 32698567 DOI: 10.23736/s0026-4970.20.04389-7] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Quantitative assessment of bleeding in dental extractions is rarely reported in the literature. The assessment of bleeding might provide additional evidence to predict and minimize postoperative outcomes. The aim of this study was to evaluate the pattern of bleeding in individuals taking direct oral anticoagulants (DOACs) submitted to dental extractions. METHODS Intraoperative bleeding was evaluated by using total collected bleeding corrected by absorbance reading (dental bleeding score). To monitoring bleeding episodes from the day of surgery, this cohort was followed up until the seventh postoperative day. RESULTS Forty-five procedures were performed in three comparative groups, patients under DOACs, individuals taking vitamin K antagonists (VKAs) and without anticoagulant therapy. No bleeding events were observed in procedures carried out in individuals of the DOAC group. Additional hemostatic measures were required in two procedures in the VKA group and one in the non-anticoagulated group. The dental bleeding scores obtained for the DOAC and VKA groups were similar. CONCLUSIONS Our data suggest that the DOAC therapy did not result in increased bleeding outcomes in this sample.
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Affiliation(s)
- Amanda L Rocha
- Department of Oral Surgery and Pathology, Faculty of Dentistry, Federal University of Minas Gerais, Minas Gerais, Brazil
| | - Sicilia R Oliveira
- Department of Oral Surgery and Pathology, Faculty of Dentistry, Federal University of Minas Gerais, Minas Gerais, Brazil
| | - Alessandra F Souza
- Department of Oral Surgery and Pathology, Faculty of Dentistry, Federal University of Minas Gerais, Minas Gerais, Brazil
| | - Denise V Travassos
- Department of Community and Preventive Dentistry, Faculty of Dentistry, Federal University of Minas Gerais, Minas Gerais, Brazil
| | - Lucas G Abreu
- Department of Pediatric Dentistry and Orthodontics, Faculty of Dentistry, Federal University of Minas Gerais, Minas Gerais, Brazil
| | - Daniel D Ribeiro
- Department of Hematology, Faculty of Medicine, Federal University of Minas Gerais, Minas Gerais, Brazil
| | - Tarcília A Silva
- Department of Oral Surgery and Pathology, Faculty of Dentistry, Federal University of Minas Gerais, Minas Gerais, Brazil -
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15
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Amaro ERS, Ortiz FR, Dorneles LS, Santos MDS, Barrioni BR, Miranda RM, Garlet GP, Teixeira MM, Szawka RE, Silva TA, Macari S. Estrogen protects dental roots from orthodontic-induced inflammatory resorption. Arch Oral Biol 2020; 117:104820. [PMID: 32592932 DOI: 10.1016/j.archoralbio.2020.104820] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 11/28/2019] [Revised: 05/06/2020] [Accepted: 06/14/2020] [Indexed: 02/06/2023]
Abstract
OBJECTIVE Root resorption is a side effect of orthodontic tooth movement (OTM). Despite the recognized role of estrogen on bone, there is little information about their effects on orthodontic-induced inflammatory root resorption (OIIRR). We aimed to investigate if estrogen deficiency affects OIIRR in two mice strains. METHODS Female Balb/C (Balb) and C57BL6/J (C57) mice were ovariectomized (OVX) and replaced with estradiol (E2). Tooth samples subjected or not to OTM were collected and analyzed by microCT, histomorphometry and qPCR. RESULTS OVX resulted in decreased root volume (RV/TV) and root mineral density (RMD) in Balb mice without OTM. In contrast, OVX did not modify physiological root structure of C57 mice. OTM and OIIRR were increased after OVX in both mice strains after 30 days. E2 replacement reversed this phenotype in Balb, but not in C57 mice. Due to the significant increase of OIIRR in OVX Balb mice, the expression of key molecules was investigated in periodontium. Accordingly, these mice showed increased expression of receptor activator of nuclear factor kappa-B ligand (RANKL), tumor necrosis factor alpha, matrix metalloproteinases-2 and -13 and decreased osteoprotegerin (OPG) and interleukin-10 expression after OTM. E2 replacement reversed the changes of these markers. CONCLUSION The lack of estrogen in Balb mice without OTM triggered loss of root structure which was positively correlated to RANKL/OPG ratio. Regardless of mouse strain, the absence of estrogen following OTM induced OIIRR. Mechanisms involve the imbalance of RANKL/OPG system, inflammatory and osteoclastic makers.
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Affiliation(s)
- Eduarda R S Amaro
- Department of Restorative Destistry, Faculty of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Fernanda Ruffo Ortiz
- Department of Pediatric Dentistry, Faculty of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Leandro S Dorneles
- Department of Structural Engineering, Faculty of Engineering, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Mariana de Souza Santos
- Department of Restorative Destistry, Faculty of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Breno Rocha Barrioni
- Department of Metallurgical and Materials Engineering, Faculty of Engineering, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Roberta Magalhães Miranda
- Department of Oral Pathology and Surgery, Faculty of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Gustavo P Garlet
- Department of Biological Sciences, School of Dentistry of Bauru, São Paulo University, Bauru, São Paulo, Brazil
| | - Mauro M Teixeira
- Department of Biochemistry and Immunology, Biological Science Institute, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Raphael E Szawka
- Department of Physiology and Biophysics, Biological Science Institute, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Tarcília A Silva
- Department of Oral Pathology and Surgery, Faculty of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Soraia Macari
- Department of Restorative Destistry, Faculty of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
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16
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Diniz IMA, Souto GR, Freitas IDP, de Arruda JAA, da Silva JM, Silva TA, Mesquita RA. Photobiomodulation Enhances Cisplatin Cytotoxicity in a Culture Model with Oral Cell Lineages. Photochem Photobiol 2019; 96:182-190. [PMID: 31424557 DOI: 10.1111/php.13152] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 08/12/2019] [Indexed: 11/24/2022]
Abstract
Cisplatin plays a central role in cancer chemotherapy, but resistance to this drug remains a major obstacle in treatment. Drawbacks related to cisplatin failure may be associated with cell energy metabolism. This study investigated whether photobiomodulation (PBM) can potentiate the effects of cisplatin on keratinocytes (HaCat) and cancer cells (SCC25 and HN12). Cells were treated with laser (GaAlAs; 660 nm; 60 mW; 0.33 J; 2.14 W cm-2 ; 11.7 J cm-2 and 6 s) and cisplatin (7.8 μg mL-1 ) to evaluate cell viability, Ki-67, VEGF, TGF-β1, EGF expression and ROS production. Observations were validated in the SCC25 cell lineage, where the type of cell death (necrosis/apoptosis) and the amount of ATP were assessed. Cell lineages showed increased sensitivity to cisplatin associated with PBM (Cis-PBM). Ki-67 was augmented in all cell lineages treated with Cis-PBM when compared to cisplatin alone (Cis). Cis or Cis-PBM significantly decreased VEGF expression in cancer cells, while no changes were seen in the expression of TGF-β1 or EGF compared to control. ROS levels were similar in the Cis and Cis-PBM groups. Cells treated with Cis-PBM died by apoptosis, leading to greater consumption of ATP. These observations suggest that PBM may potentiate the effects of cisplatin, leading to increased drug cytotoxicity and enhanced cell death.
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Affiliation(s)
- Ivana M A Diniz
- Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Giovanna R Souto
- Department of Dentistry, School of Dentistry, Pontifícia Universidade Católica, Belo Horizonte, MG, Brazil
| | - Iuri D P Freitas
- Department of Dentistry, School of Dentistry, Faculdade de SeteLagoas, SeteLagoas, MG, Brazil
| | - José Alcides A de Arruda
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Janine M da Silva
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Tarcília A Silva
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Ricardo A Mesquita
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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17
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Montalvany-Antonucci CC, Duffles LF, de Arruda JAA, Zicker MC, de Oliveira S, Macari S, Garlet GP, Madeira MFM, Fukada SY, Andrade I, Teixeira MM, Mackay C, Vieira AT, Vinolo MA, Silva TA. Short-chain fatty acids and FFAR2 as suppressors of bone resorption. Bone 2019; 125:112-121. [PMID: 31100533 DOI: 10.1016/j.bone.2019.05.016] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [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] [Received: 01/18/2019] [Revised: 04/30/2019] [Accepted: 05/13/2019] [Indexed: 12/21/2022]
Abstract
Short-chain fatty acids (SCFAs) exert a variety of immune and metabolic functions by binding to G-protein-coupled receptors, mainly free fatty acid receptor 2 (FFAR2). However, the effects of SCFAs and FFARs on bone remodeling, especially in alveolar bone, have been less explored. In this study, we investigated the influence of the SCFA/FFAR2 axis on alveolar bone. Bone samples from wild-type (WT) and FFAR2-deficient mice (FFAR2-/-) were analyzed using micro-CT, histology and qPCR. WT and FFAR2-/- animals received a high-fiber diet (HFD) reported to increase circulating levels of SCFAs. Additionally, we analyzed the effects of SCFAs and a synthetic FFAR2 agonist, phenylacetamide-1 (CTMB), on bone cell differentiation. The participation of histone deacetylase inhibitors (iHDACs) in the effects of SCFAs was further assessed in vitro. CTMB treatment was also evaluated in vivo during orthodontic tooth movement (OTM). FFAR2-/- mice exhibited deterioration of maxillary bone parameters. Consistent with this, FFAR2-/- mice exhibited a significant increase of OTM and changes in bone cell numbers and in the expression of remodeling markers. The HFD partially reversed bone loss in the maxillae of FFAR2-/- mice. In WT mice, the HFD induced changes in the bone markers apparently favoring a bone formation scenario. In vitro, bone marrow cells from FFAR2-/- mice exhibited increased differentiation into osteoclasts, while no changes in osteoblasts were observed. In line with this, differentiation of osteoclasts was diminished by SCFAs and CTMB. Moreover, CTMB treatment significantly reduced OTM. Pretreatment of osteoclasts with iHDACs did not modify the effects of SCFAs on these cells. In conclusion, SCFAs function as regulators of bone resorption. The effects of SCFAs on osteoclasts are dependent on FFAR2 activation and are independent of the inhibition of HDACs. FFAR2 agonists may be useful to control bone osteolysis.
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Affiliation(s)
- C C Montalvany-Antonucci
- Department of Oral Surgery and Pathology, Faculty of Dentistry, Federal University of Minas Gerais, MG, Brazil; Department of Orthodontics, Faculty of Dentistry, Pontifical Catholic University, Belo Horizonte, MG, Brazil
| | - L F Duffles
- Department of Oral Surgery and Pathology, Faculty of Dentistry, Federal University of Minas Gerais, MG, Brazil
| | - J A A de Arruda
- Department of Oral Surgery and Pathology, Faculty of Dentistry, Federal University of Minas Gerais, MG, Brazil
| | - M C Zicker
- Department of Food Science, Faculty of Pharmacy, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - S de Oliveira
- Laboratory of Immunoinflammation, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, SP, Brazil
| | - S Macari
- Department of Pediatric Dentistry and Orthodontics, Faculty of Dentistry, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - G P Garlet
- Department of Biological Sciences, School of Dentistry of Bauru, University of São Paulo, Bauru, SP, Brazil
| | - M F M Madeira
- Department of Microbiology, Institute of Biological Science, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - S Y Fukada
- Department of Pharmacological Science, Faculty of Pharmacy, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - I Andrade
- Department of Orthodontics, Faculty of Dentistry, Pontifical Catholic University, Belo Horizonte, MG, Brazil
| | - M M Teixeira
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - C Mackay
- Department of Immunology, Monash University, Melbourne, Australia
| | - A T Vieira
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - M A Vinolo
- Laboratory of Immunoinflammation, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, SP, Brazil
| | - T A Silva
- Department of Oral Surgery and Pathology, Faculty of Dentistry, Federal University of Minas Gerais, MG, Brazil.
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18
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Guerrero-Vargas JA, Silva TA, Macari S, de Las Casas EB, Garzón-Alvarado DA. Influence of interdigitation and expander type in the mechanical response of the midpalatal suture during maxillary expansion. Comput Methods Programs Biomed 2019; 176:195-209. [PMID: 31200906 DOI: 10.1016/j.cmpb.2019.05.007] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 05/02/2019] [Accepted: 05/11/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND AND OBJECTIVE The orthopedic Maxillary Expansion (ME) procedure is used for treating the transverse maxillary deficiency. This pathology consists in a smaller transverse dimension in the maxilla and leads to malocclusion. The treatment takes advantage of the existence of the midpalatal suture (MPS), which corresponds to the junction at the palatine bones of its horizontal portions. The technique employs a device, conventionally a palatal expander attached to the posterior teeth, to separate the two maxillary bones in the MPS. The objective of this study was to analyze, using the Finite Element Method, the biomechanical behavior of the MPS when an expansion is applied. METHODS A Computer Tomography image of the maxilla was reconstructed, the suture geometry was modeled with different interdigitation levels and types of hyrax devices. A total of 12 geometric models (three levels for interdigitation and four types of hyrax devices) were prepared and analyzed taking into account the chewing forces and the expansion displacement. For each case, maximum principal stresses on the maxilla (bone), and equivalent stresses on the expander device (stainless steel) were observed. In the MPS, maximum principal stresses and directional displacement were evaluated. RESULTS The results showed that the interdigitation does not have an important influence on the deformation behavior of the maxilla but it affects the stress distribution. In addition, the type of expander device and anchorage have a direct relationship with the treatment effectiveness; larger deformation in the expansion direction was obtained with skeletal when compared to dental anchorage. CONCLUSIONS A study that allows a better understanding of the oral biomechanics during the application of ME was presented. To our knowledge, it is the first study based on computational simulations that takes into account bone structures, like maxilla and part of the skull, to analyze the interdigitation influence on the MPS behavior when exposed to a ME.
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Affiliation(s)
- J A Guerrero-Vargas
- Department of Mechanical and Mechatronic Engineering, Faculty of Engineering, Universidad Nacional de Colombia, Bogotá, Colombia; Department of Mechanical Engineering, School of Engineering, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil; Department of Mechanical Engineering, Faculty of Engineering, Universidad ECCI, Bogotá, Colombia.
| | - T A Silva
- Department of Clinical, Pathology and Dental Surgery, Faculty of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - S Macari
- Department of Pediatric Dentistry and Orthodontics, Faculty of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - E B de Las Casas
- Department of Structural Engineering, School of Engineering, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - D A Garzón-Alvarado
- Department of Mechanical and Mechatronic Engineering, Faculty of Engineering, Universidad Nacional de Colombia, Bogotá, Colombia
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19
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Abstract
Periodontal diseases are initiated by bacteria that accumulate in a biofilm on the tooth surface and affect the adjacent periodontal tissue. Systemic diseases such as diabetes, rheumatoid arthritis (RA), and systemic lupus erythematosus (SLE) increase susceptibility to destructive periodontal diseases. In human studies and in animal models, these diseases have been shown to enhance inflammation in the periodontium and increase the risk or severity of periodontitis. All 3 systemic diseases are linked to a decrease in bacterial taxa associated with health and an increase in taxa associated with disease. Although there is controversy regarding the specific oral bacterial changes associated with each disease, it has been reported that diabetes increases the levels of Capnocytophaga, Porphyromonas, and Pseudomonas, while Prevotella and Selenomonas are increased in RA and Selenomonas, Leptotrichia, and Prevotella in SLE. In an animal model, diabetes increased the pathogenicity of the oral microbiome, as shown by increased inflammation, osteoclastogenesis, and periodontal bone loss when transferred to normal germ-free hosts. Moreover, in diabetic animals, the increased pathogenicity could be substantially reversed by inhibition of IL-17, indicating that host inflammation altered the microbial pathogenicity. Increased IL-17 has also been shown in SLE, RA, and leukocyte adhesion deficiency and may contribute to oral microbial changes in these diseases. Successful RA treatment with anti-inflammatory drugs partially reverses the oral microbial dysbiosis. Together, these data demonstrate that systemic diseases characterized by enhanced inflammation disturb the oral microbiota and point to IL-17 as key mediator in this process.
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Affiliation(s)
- D T Graves
- 1 Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - J D Corrêa
- 2 Faculty of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - T A Silva
- 2 Faculty of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Brazil
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20
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Macari S, Madeira MFM, Lima ILA, Pereira TSF, Dias GJ, Cirelli JA, de Molon RS, Fukada SY, Szawka RE, Garlet GP, Teixeira MM, Silva TA. ST2 regulates bone loss in a site-dependent and estrogen-dependent manner. J Cell Biochem 2018; 119:8511-8521. [PMID: 30011081 DOI: 10.1002/jcb.27080] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [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: 12/20/2017] [Accepted: 04/26/2018] [Indexed: 12/13/2022]
Abstract
Interleukin-33 (IL-33) and its receptor, ST2, are implicated in bone remodeling. The lack of estrogen after menopause results in an accelerated bone loss. Here we investigated the role of ST2 in the bone loss induced by estrogen deficiency. ST2-deficient mice (ST2-/- ) and their littermates (wildtype [WT]) were ovariectomized (OVX), while ovary-intact mice were used as controls. Bone sites were analyzed by microcomputed tomography, histomorphometry, and quantitative real-time polymerase chain reaction (qPCR). Deletion of IL-33 or ST2 resulted in a similar bone loss in the femur and maxilla. Ovariectomy in WT mice caused bone loss in the same areas. The lack of ST2 in OVX mice did not alter bone remodeling in the femur but prevented bone loss in the maxilla. Consistently, ovariectomy increased the IL-33 messenger RNA (mRNA) levels in the maxilla but not in the femur. Under mechanical stimulation, ovariectomy and ST2 deletion independently increased bone remodeling induced by orthodontic tooth movement, which was also associated with a greater number of osteoclasts and a reduced number of osteoblasts in the maxillary bone. ST2-/- OVX mice, however, displayed twice as many osteoblasts as that of WT OVX mice. Ovariectomy and ST2 deletion differently altered the cytokine mRNA levels in the maxilla. Remarkably, interleukin-10 expression was decreased in both WT OVX and ST2-/- mice, and this reduction was completely restored in ST2-/- OVX mice. The results demonstrate that estrogen and IL33/ST2 independently protect against bone loss. However, the ovariectomy-induced bone loss is IL-33/ST2-dependent in the maxilla but not in the femur, indicating a bimodal and site-specific role of ST2 in bone remodeling.
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Affiliation(s)
- Soraia Macari
- Department of Pediatric Dentistry and Orthodontics, Faculty of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Mila F M Madeira
- Department of Microbiology, Biological Science Institute, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Izabella L A Lima
- Department of Pediatric Dentistry and Orthodontics, Faculty of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Thaís S F Pereira
- Faculty of Dentistry, Department of Oral Pathology and Surgery, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - George J Dias
- Department of Anatomy, University of Otago, Dunedin, New Zealand
| | - Joni A Cirelli
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University, Araraquara, Brazil
| | - Rafael S de Molon
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University, Araraquara, Brazil
| | - Sandra Y Fukada
- Department of Physics and Chemistry, School of Pharmaceutical Sciences of Ribeirao Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Raphael E Szawka
- Department of Physiology and Biophysics, Biological Science Institute, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Gustavo P Garlet
- Department of Biological Sciences, School of Dentistry of Bauru, São Paulo University, Bauru, Brazil
| | - Mauro M Teixeira
- Department of Biochemistry and Immunology, Biological Science Institute, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Tarcília A Silva
- Faculty of Dentistry, Department of Oral Pathology and Surgery, Federal University of Minas Gerais, Belo Horizonte, Brazil
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21
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Macari S, Sharma LA, Wyatt A, da Silva JM, Dias GJ, Silva TA, Szawka RE, Grattan DR. Lactation induces increases in the RANK/RANKL/OPG system in maxillary bone. Bone 2018; 110:160-169. [PMID: 29382610 DOI: 10.1016/j.bone.2018.01.032] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [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] [Received: 07/18/2017] [Revised: 01/23/2018] [Accepted: 01/26/2018] [Indexed: 10/18/2022]
Abstract
The underlying causes of maxillary bone loss during lactation remain poorly understood. We evaluated the impact of lactation on physiological and mechanically-induced alveolar bone remodeling. Nulliparous non-lactating (N-LAC) and 21-day lactating (LAC) mice underwent mechanically-induced bone remodeling by orthodontic tooth movement (OTM). Micro-computed tomography (microCT) was performed in the maxilla, femur and vertebra. Tartrate-resistant-acid phosphatase (TRAP) and Masson's trichrome labelling was performed in the maxillary bone and gene expression was determined in the periodontal ligament. The effect of prolactin on osteoclast (OCL) and osteoblast (OBL) differentiation was also investigated in N-LAC and LAC mice. Lactation increased alveolar bone loss in the maxilla, femur and vertebra, while OTM was enhanced. The number of OCL and OBL was higher in the maxilla of LAC mice. OTM increased OCL in both groups; while OBL was increased only in N-LAC but not in LAC mice, in which cell numbers were already elevated. The alveolar bone loss during lactation was associated with increased expression of receptor activator of nuclear factor-KappaB (RANK), RANK ligand (RANKL), and osteoprotegerin (OPG) in the maxilla. OTM induced the same responses in N-LAC mice, whereas it had no further effect in LAC mice. Lactation enhanced differentiation of OCL and OBL from bone marrow cells, and prolactin recapitulated OCL differentiation in N-LAC mice. Thus, lactation increases physiological maxillary bone remodeling and OTM, and both require activation of RANK/RANKL/OPG system. These findings expand our knowledge of lactation-induced osteopenia and have possible impact on clinical practice regarding orthodontic treatments and dental implants in lactating women.
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Affiliation(s)
- Soraia Macari
- Departamento de Odontopediatria e Ortodontia, Faculdade de Odontologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
| | - Lavanya A Sharma
- Department of Anatomy, University of Otago, Dunedin, New Zealand
| | - Amanda Wyatt
- Department of Anatomy, University of Otago, Dunedin, New Zealand
| | - Janine Maíra da Silva
- Departamento de Clínica, Patologia e Cirurgia Odontológicas, Faculdade de Odontologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - George J Dias
- Department of Anatomy, University of Otago, Dunedin, New Zealand
| | - Tarcília A Silva
- Departamento de Clínica, Patologia e Cirurgia Odontológicas, Faculdade de Odontologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Raphael E Szawka
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - David R Grattan
- Department of Anatomy, University of Otago, Dunedin, New Zealand
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22
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Boff D, Oliveira VLS, Queiroz Junior CM, Silva TA, Allegretti M, Verri WA, Proost P, Teixeira MM, Amaral FA. CXCR2 is critical for bacterial control and development of joint damage and pain in Staphylococcus aureus-induced septic arthritis in mouse. Eur J Immunol 2018; 48:454-463. [PMID: 29168180 DOI: 10.1002/eji.201747198] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [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: 06/23/2017] [Revised: 10/23/2017] [Accepted: 11/15/2017] [Indexed: 02/06/2023]
Abstract
Staphylococcus aureus is the main pathogen associated with septic arthritis. Upon infection, neutrophils are quickly recruited to the joint by different chemoattractants, especially CXCR1/2 binding chemokines. Although their excessive accumulation is associated with intense pain and permanent articular damage, neutrophils have an important function in controlling bacterial burden. This work aimed to study the role of CXCR2 in the control of infection, hypernociception and tissue damage in S. aureus-induced septic arthritis in mice. The kinetics of neutrophil recruitment correlated with the bacterial load recovered from inflamed joint after intra-articular injection of S. aureus. Treatment of mice from the start of infection with the non-competitive antagonist of CXCR1/2, DF2156A, reduced neutrophil accumulation, cytokine production in the tissue, joint hypernociception and articular damage. However, early DF2156A treatment increased the bacterial load locally. CXCR2 was important for neutrophil activation and clearance of bacteria in vitro and in vivo. Start of treatment with DF2156A 3 days after infection prevented increase in bacterial load and reduced the hypernociception in the following days, but did not improve tissue damage. In conclusion, treatment with DF2156A seems be effective in controlling tissue inflammation and dysfunction but its effects are highly dependent on the timing of the treatment start.
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Affiliation(s)
- Daiane Boff
- Imunofarmacologia, Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais Brazil.,Laboratory of Molecular Immunology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Vivian L S Oliveira
- Imunofarmacologia, Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais Brazil
| | - Celso M Queiroz Junior
- Department of Morphology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Brazil
| | - Tarcília A Silva
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | | | - Waldiceu A Verri
- Department of Pathological Sciences, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Brazil
| | - Paul Proost
- Laboratory of Molecular Immunology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Mauro M Teixeira
- Imunofarmacologia, Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais Brazil
| | - Flavio A Amaral
- Imunofarmacologia, Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais Brazil
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23
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Souza AF, Rocha AL, Castro WH, Gelape CL, Nunes MCP, Oliveira SR, Travassos DV, Silva TA. Dental management for patients undergoing heart valve surgery. J Card Surg 2017; 32:627-632. [DOI: 10.1111/jocs.13211] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Alessandra F. Souza
- Faculty of Dentistry; Department of Community and Preventive Dentistry; Universidade Federal de Minas Gerais; Minas Gerais Brazil
| | - Amanda L. Rocha
- Faculty of Dentistry; Department of Oral Surgery and Pathology; Universidade Federal de Minas Gerais; Minas Gerais Brazil
| | - Wagner H. Castro
- Faculty of Dentistry; Department of Oral Surgery and Pathology; Universidade Federal de Minas Gerais; Minas Gerais Brazil
| | - Claudio L. Gelape
- Faculty of Medicine; Department of Surgery; Universidade Federal de Minas Gerais; Minas Gerais Brazil
| | - Maria Carmo P. Nunes
- Faculty of Medicine; Department of Surgery; Universidade Federal de Minas Gerais; Minas Gerais Brazil
| | - Sicilia R. Oliveira
- Faculty of Dentistry; Department of Oral Surgery and Pathology; Universidade Federal de Minas Gerais; Minas Gerais Brazil
| | - Denise V. Travassos
- Faculty of Dentistry; Department of Community and Preventive Dentistry; Universidade Federal de Minas Gerais; Minas Gerais Brazil
| | - Tarcília A. Silva
- Faculty of Dentistry; Department of Oral Surgery and Pathology; Universidade Federal de Minas Gerais; Minas Gerais Brazil
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24
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Madeira MFM, Queiroz-Junior CM, Corrêa JD, Werneck SMC, Machado FS, Cunha TM, Garlet GP, Teixeira MM, Silva TA, Souza DG. The role of 5-lipoxygenase in Aggregatibacter actinomycetemcomitans-induced alveolar bone loss. J Clin Periodontol 2017; 44:793-802. [PMID: 28569991 DOI: 10.1111/jcpe.12755] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/28/2017] [Indexed: 11/27/2022]
Abstract
AIM Leukotrienes (LTs) are pro-inflammatory lipid mediators formed by the enzyme 5-lipoxygenase (5-LO). The involvement of 5-LO metabolites in periodontal disease (PD) is not well defined. This study aimed to assess the role of 5-LO in experimental PD induced by Aggregatibacter actinomycetemcomitans (Aa). MATERIAL AND METHODS In vivo experiments were carried out using SV129 wild-type (WT) and 5-LO-deficient (5lo-/- ) mice inoculated with Aa. Osteoclasts were stimulated in vitro with AaLPS in the presence or not of selective inhibitors of the 5-LO pathway, or LTB4 or platelet-activating factor (PAF), as PAF has already been shown to increase osteoclast activity. RESULTS In 5lo-/- mice, there were no loss of alveolar bone and less TRAP-positive osteoclasts in periodontal tissues, after Aa inoculation, despite local production of TNF-α and IL-6. The differentiation and activity of osteoclasts stimulated with AaLPS were diminished in the presence of BLT1 antagonist or 5-LO inhibitor, but not in the presence of cysteinyl leukotriene receptor antagonist. The osteoclast differentiation induced by PAF was impaired by the BLT1 antagonism. CONCLUSION In conclusion, LTB4 but not CysLTs is important for Aa-induced alveolar bone loss. Overall, LTB4 affects osteoclast differentiation and activity and is a key intermediate of PAF-induced osteoclastogenesis.
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Affiliation(s)
- Mila F M Madeira
- Department of Microbiology, Biological Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Celso M Queiroz-Junior
- Department of Morphology, Biological Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Jôice D Corrêa
- Department of Oral Pathology and Surgery, Faculty of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Sílvia M C Werneck
- Department of Microbiology, Biological Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Fabiana S Machado
- Department of Biochemistry and Immunology, Biological Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Thiago M Cunha
- Department of Pharmacology, Faculty of Medicine of Ribeirão Preto, Universidade de São Paulo, São Paulo, Brazil
| | - Gustavo P Garlet
- Department of Biological Sciences, School of Dentistry of Bauru, Universidade de São Paulo, Bauru, São Paulo, Brazil
| | - Mauro M Teixeira
- Department of Biochemistry and Immunology, Biological Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Tarcília A Silva
- Department of Oral Pathology and Surgery, Faculty of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Daniele G Souza
- Department of Microbiology, Biological Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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25
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Boriollo MFG, Silva TA, Rodrigues-Netto MF, Silva JJ, Marques MB, Dias CTS, Höfling JF, Resck MCC, Oliveira NMS. Reduction of doxorubicin-induced genotoxicity by Handroanthus impetiginosus in mouse bone marrow revealed by micronucleus assay. BRAZ J BIOL 2017; 78:1-12. [PMID: 28699970 DOI: 10.1590/1519-6984.18515] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Accepted: 09/20/2016] [Indexed: 11/22/2022] Open
Abstract
Handroanthus impetiginosus has long been used in traditional medicine and various studies have determined the presence of bioactive chemical compounds and potential phytotherapeutics. In this study, the genotoxicity of the lyophilized tincture of H. impetiginosus bark (THI) was evaluated in mouse bone marrow using micronucleus assays. The interaction between THI and genotoxic effects induced by the chemotherapeutic agent, doxorubicin (DXR), was also analyzed. Experimental groups were evaluated 24 to 48 h after treatment with N-nitroso-N-ethylurea (NEU; 50 mg/kg), DXR (5 mg/kg), sodium chloride (NaCl; 150 mM), and THI (0.5-2 g/kg). Antigenotoxic assays were carried out using THI (0.5 g/kg) in combination with NEU or DXR. Analysis of the micronucleated polychromatic erythrocytes (MNPCEs) indicated no significant differences between treatment doses of THI (0.5-2 g/kg) and NaCl. Polychromatic erythrocyte (PCE) to normochromatic erythrocyte (NCE) ratios did not indicate any statistical differences between DXR and THI or NaCl, but there were differences between THI and NaCl. A significant reduction in MNPCEs and PCE/NCE ratios was observed when THI was administered in combination with DXR. This study suggested the absence of THI genotoxicity that was dose-, time-, and gender-independent and the presence of moderate systemic toxicity that was dose-independent, but time- and gender-dependent. The combination of THI and DXR also suggested antigenotoxic effects, indicating that THI reduced genotoxic effects induced by chemotherapeutic agents.
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Affiliation(s)
- M F G Boriollo
- Faculdade de Ciências Médicas, Universidade José do Rosário Vellano, Alfenas, MG, Brazil
| | - T A Silva
- Faculdade de Ciências Médicas, Universidade José do Rosário Vellano, Alfenas, MG, Brazil
| | - M F Rodrigues-Netto
- Faculdade de Ciências Médicas, Universidade José do Rosário Vellano, Alfenas, MG, Brazil
| | - J J Silva
- Faculdade de Ciências Médicas, Universidade José do Rosário Vellano, Alfenas, MG, Brazil
| | - M B Marques
- Faculdade de Ciências Médicas, Universidade José do Rosário Vellano, Alfenas, MG, Brazil
| | - C T S Dias
- Escola de Agricultura "Luiz de Queiroz", Universidade de São Paulo, Piracicaba, SP, Brazil
| | - J F Höfling
- Faculdade de Odontologia de Piracicaba, Universidade Estadual de Campinas, Piracicaba, SP, Brazil
| | - M C C Resck
- Faculdade de Ciências Médicas, Universidade José do Rosário Vellano, Alfenas, MG, Brazil
| | - N M S Oliveira
- Faculdade de Ciências Médicas, Universidade José do Rosário Vellano, Alfenas, MG, Brazil
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Corrêa JD, Branco LGA, Calderaro DC, Mendonça SMS, Travassos DV, Ferreira GA, Teixeira AL, Abreu LG, Silva TA. Impact of systemic lupus erythematosus on oral health-related quality of life. Lupus 2017; 27:283-289. [PMID: 28679308 DOI: 10.1177/0961203317719147] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Oral symptoms in systemic lupus erythematosus (SLE) patients are often unexplored and affect the health-related quality of life. The aims of this study were: (a) to evaluate the oral health condition of SLE patients compared to control subjects without rheumatic diseases; (b) to determine the consequences of oral health condition in the quality of life of these two groups. Individuals with SLE ( n = 75) and without SLE ( n = 78) (control group), paired for gender and age, underwent complete oral examination. Sociodemographic and clinical information was obtained, and interviews were conducted using the Brazilian version of the oral health impact profile. The activity and damage of SLE disease were assessed, respectively, by the systemic lupus erythematosus disease activity index 2000 and the Systemic Lupus International Collaborating Clinics/American College of Rheumatology damage index for systemic lupus erythematosus. When we analysed the oral health condition and hygiene habits of the participants, SLE patients exhibited an increased number of missing teeth despite their higher frequency of tooth brushing. No significant differences were verified in other habits and clinical parameters evaluated such as smoking, flossing, salivary flux, periodontitis, decayed and filled teeth. Patients with SLE presented with worse oral health-related quality of life than controls ( P = 0.011). The significant difference was on individuals' physical disability ( P = 0.002). The determinant of the negative impact on the oral health-related quality of life was prosthesis wearing ( P < 0.05). Overall, the oral health impact profile score was higher in individuals with moderate SLE damage compared to SLE individuals with no damage ( P = 0.043). Patients with SLE had a negative impact of oral condition on their quality of life. The evaluation of the oral health-related quality of life might be useful to monitor the effects of SLE on oral condition.
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Affiliation(s)
- J D Corrêa
- 1 Department of Oral Pathology and Surgery, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - L G A Branco
- 1 Department of Oral Pathology and Surgery, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - D C Calderaro
- 2 Department of Locomotor System, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - S M S Mendonça
- 1 Department of Oral Pathology and Surgery, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - D V Travassos
- 3 Department of Community and Preventive Dentistry, Universidade Federal de Minas Gerais, Minas Gerais, Belo Horizonte, Brazil
| | - G A Ferreira
- 2 Department of Locomotor System, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - A L Teixeira
- 4 Department of Internal Medicine, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - L G Abreu
- 5 Department of Pediatric Dentistry and Orthodontics, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - T A Silva
- 1 Department of Oral Pathology and Surgery, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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Abstract
The inflammatory oral diseases are characterized by the persistent migration of polymorphonuclear leukocytes, monocytes, lymphocytes, plasma and mast cells, and osteoblasts and osteoclasts. In the last decade, there has been a great interest in the mediators responsible for the selective recruitment and activation of these cell types at inflammatory sites. Of these mediators, the chemokines have received particular attention in recent years. Chemokine messages are decoded by specific receptors that initiate signal transduction events, leading to a multitude of cellular responses, including chemotaxis and activation of inflammatory and bone cells. However, little is known about their role in the pathogenesis of inflammatory oral diseases. The purpose of this review is to summarize the findings regarding the role of chemokines in periapical and periodontal tissue inflammation, and the integration, into experimental models, of the information about the role of chemokines in human diseases.
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Affiliation(s)
- T A Silva
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, CEP 31.270-901, Belo Horizonte, Minas Gerais, Brazil.
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28
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May PW, Clegg M, Silva TA, Zanin H, Fatibello-Filho O, Celorrio V, Fermin DJ, Welch CC, Hazell G, Fisher L, Nobbs A, Su B. Diamond-coated 'black silicon' as a promising material for high-surface-area electrochemical electrodes and antibacterial surfaces. J Mater Chem B 2016; 4:5737-5746. [PMID: 32263865 DOI: 10.1039/c6tb01774f] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
This report describes a method to fabricate high-surface-area boron-doped diamond (BDD) electrodes using so-called 'black silicon' (bSi) as a substrate. This is a synthetic nanostructured material that contains high-aspect-ratio nano-protrusions, such as spikes or needles, on the Si surface produced via plasma etching. We now show that coating a bSi surface composed of 15 μm-high needles conformably with BDD produces a robust electrochemical electrode with high sensitivity and high electroactive area. A clinically relevant demonstration of the efficacy of these electrodes is shown by measuring their sensitivity for detection of dopamine (DA) in the presence of an excess of uric acid (UA). Finally, the nanostructured surface of bSi has recently been found to generate a mechanical bactericidal effect, killing both Gram-negative and Gram-positive bacteria at high rates. We will show that BDD-coated bSi also acts as an effective antibacterial surface, with the added advantage that being diamond-coated it is far more robust and less likely to become damaged than Si.
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Affiliation(s)
- P W May
- School of Chemistry, University of Bristol, Bristol BS8 1TS, UK.
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29
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Lima ILA, Macari S, Madeira MFM, Rodrigues LFD, Colavite PM, Garlet GP, Soriani FM, Teixeira MM, Fukada SY, Silva TA. Osteoprotective Effects of IL-33/ST2 Link to Osteoclast Apoptosis. Am J Pathol 2016; 185:3338-48. [PMID: 26598236 DOI: 10.1016/j.ajpath.2015.08.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 06/24/2015] [Accepted: 08/04/2015] [Indexed: 01/06/2023]
Abstract
The relevance of IL-33 and its receptor ST2 for bone remodeling is not well-defined. Our aim was to assess the role and underlying mechanisms of IL-33/ST2 in mechanically induced bone remodeling. BALB/c (wild type) and ST2 deficient (St2(-/-)) mice were subjected to mechanical loading in alveolar bone. Microtomography, histology, and real-time quantitative PCR were performed to analyze bone parameters, apoptosis and bone cell counts, and expression of bone remodeling markers, respectively. MC3T3-E1 osteoblastic cells and bone marrow cells were used to verify if mechanical force triggered IL-33 and ST2 expression as well as the effects of IL-33 on osteoclast differentiation and activity. Mechanical loading increased the expression of IL-33 and ST2 in alveolar bone in vivo and in osteoblastic cells in vitro. St2(-/-) mice had increased mechanical loading-induced bone resorption, number of osteoclasts, and expression of proresorptive markers. In contrast, St2(-/-) mice exhibited reduced numbers of osteoblasts and apoptotic cells in periodontium and diminished expression of osteoblast signaling molecules. In vitro, IL-33 treatment inhibited osteoclast differentiation and activity even in the presence of receptor activator of NF-κB ligand. IL-33 also increased the expression of pro-apoptotic molecules, including Bcl-2-associated X protein (BAX), cell-surface Fas receptor (FAS), FASL, FAS-associated death domain, tumor necrosis factor-related apoptosis-inducing ligand, and BH3 interacting-domain death (BID). Overall, these findings suggest that IL-33/ST2 have anti-osteoclastogenic effects and reduce osteoclast formation and activity by inducing their apoptosis.
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Affiliation(s)
- Izabella L A Lima
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Soraia Macari
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Mila F M Madeira
- Department of Oral Pathology, Faculty of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Letícia F D Rodrigues
- Department of Oral Pathology, Faculty of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Priscila M Colavite
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Gustavo P Garlet
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Frederico M Soriani
- Department of General Biology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Mauro M Teixeira
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Sandra Y Fukada
- School of Medicine of Ribeirao Preto, and the Department of Physics and Chemistry, Faculty of Pharmaceutical Sciences of Ribeirão Preto, São Paulo University, São Paulo, Brazil
| | - Tarcília A Silva
- Department of Oral Pathology, Faculty of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
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30
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Oton-Leite AF, Silva GBL, Morais MO, Silva TA, Leles CR, Valadares MC, Pinezi JCD, Batista AC, Mendonça EF. Effect of low-level laser therapy on chemoradiotherapy-induced oral mucositis and salivary inflammatory mediators in head and neck cancer patients. Lasers Surg Med 2015; 47:296-305. [DOI: 10.1002/lsm.22349] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/01/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Angélica F. Oton-Leite
- Department of Oral Medicine (Oral Pathology); Dental School; Federal University of Goiás; Goiânia Goiás 74605-220 Brazil
| | - Geisa Badauy L. Silva
- Department of Oral Medicine (Oral Pathology); Dental School; Federal University of Goiás; Goiânia Goiás 74605-220 Brazil
| | - Marília O. Morais
- Department of Oral Medicine (Oral Pathology); Dental School; Federal University of Goiás; Goiânia Goiás 74605-220 Brazil
| | - Tarcília A. Silva
- Department of Oral Medicine (Oral Pathology); Dental School; Federal University of Minas Gerais; Belo Horizonte Minas Gerais 31270-901 Brazil
| | - Cláudio R. Leles
- Department of Prevention and Oral Rehabilitation, Dental School; Federal University of Goiás; Goiânia Goiás 74605-220 Brazil
| | - Marize Campos Valadares
- Laboratory of Cellular Pharmacology and Toxicology; Faculty of Pharmacy; Federal University of Goiás; Goiânia Goiás 74605-220 Brazil
| | - Juliana Castro D. Pinezi
- Radiotherapy Department of the Araújo Jorge Hospital; Association of Cancer Combat of Goiás; Goiânia Goiás 74605-070 Brazil
| | - Aline C. Batista
- Department of Oral Medicine (Oral Pathology); Dental School; Federal University of Goiás; Goiânia Goiás 74605-220 Brazil
| | - Elismauro F. Mendonça
- Department of Oral Medicine (Oral Pathology); Dental School; Federal University of Goiás; Goiânia Goiás 74605-220 Brazil
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31
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de Souza FTA, Kummer A, Silva MLV, Amaral TMP, Abdo EN, Abreu MHNG, Silva TA, Teixeira AL. The association of openness personality trait with stress-related salivary biomarkers in burning mouth syndrome. Neuroimmunomodulation 2015; 22:250-5. [PMID: 25322841 DOI: 10.1159/000367714] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Accepted: 08/20/2014] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Burning mouth syndrome (BMS) is a chronic disorder defined as a burning sensation in the oral mucosa without evidence of pathological findings. Its pathophysiology is largely unknown, but psychiatric disorders and personality traits have been implicated. OBJECTIVE This study investigated whether there is any association between salivary biomarkers and personality traits in BMS patients. METHODS It was a cross-sectional, controlled study that evaluated 30 individuals with BMS and 32 controls. All subjects were assessed with a structured psychiatric interview (Mini International Neuropsychiatric Interview) and the Big Five inventory. Salivary levels of brain-derived neurotrophic factor (BDNF), neural growth factor, tumor necrosis factor-α, interleukin (IL)-6, IL-10 and cortisol were determined. RESULTS We found that BMS patients exhibited more traits of neuroticism and lower openness than controls. Openness showed a moderate and negative correlation with cortisol, BDNF and IL-6. CONCLUSION Personality traits are associated with salivary biomarkers in BMS.
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Affiliation(s)
- Fabrício T A de Souza
- Department of Oral Pathology and Surgery, School of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
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32
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Moura AP, Taddei SRA, Queiroz-Junior CM, Madeira MFM, Rodrigues LFD, Garlet GP, Souza DG, Machado FS, Andrade I, Teixeira MM, Silva TA. The relevance of leukotrienes for bone resorption induced by mechanical loading. Bone 2014; 69:133-8. [PMID: 25270168 DOI: 10.1016/j.bone.2014.09.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [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] [Received: 05/22/2014] [Revised: 09/08/2014] [Accepted: 09/20/2014] [Indexed: 12/15/2022]
Abstract
5-Lipoxygenase (5-LO) metabolites are important pro-inflammatory lipid mediators. However, much still remains to be understood about the role of such mediators in bone remodeling. This study aimed to investigate the effect of 5-LO metabolites, LTB4 and CysLTs, in a model of mechanical loading-induced bone remodeling. Strain-induced tooth movement and consequently alveolar bone resorption/apposition was achieved by using a coil spring placed on molar and attached to incisors of C57BL6 (wild-type-WT), 5-LO deficient mice (5-LO(-/-)) and mice treated with 5-LO inhibitor (zileuton-ZN) or with antagonist of CysLTs receptor (montelukast-MT). The amount of bone resorption and the number of osteoclasts were determined morphometrically. The expression of inflammatory and bone remodeling markers in periodontium was analyzed by qPCR. Osteoclast differentiation and TNF-α production were evaluated in vitro using RAW 264.7 cells treated with LTB4 or LTD4. Bone resorption, TRAP(+) cells and expression of Tnfa, Il10 and Runx2 were significantly diminished in 5-LO(-/-), ZN- and MT-treated mice. The expression of Rank was also reduced in 5-LO(-/-) and MT-treated mice. Accordingly, LTB4 and LTD4 in association with RANKL promoted osteoclast differentiation and increased TNF-α release in vitro. These data demonstrate that the absence of 5-LO metabolites, LTB4 and CysLTs reduces osteoclast recruitment and differentiation, consequently diminishing bone resorption induced by mechanical loading. Thus, 5-LO might be a potential target for controlling bone resorption in physiological and pathological conditions.
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Affiliation(s)
- A P Moura
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Minas Gerais, Brazil; Department of Oral Pathology and Surgery, Faculty of Dentistry, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
| | - S R A Taddei
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
| | - C M Queiroz-Junior
- Department of Oral Pathology and Surgery, Faculty of Dentistry, Universidade Federal de Minas Gerais, Minas Gerais, Brazil; Department of Microbiology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
| | - M F M Madeira
- Department of Oral Pathology and Surgery, Faculty of Dentistry, Universidade Federal de Minas Gerais, Minas Gerais, Brazil; Department of Microbiology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
| | - L F D Rodrigues
- Department of Oral Pathology and Surgery, Faculty of Dentistry, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
| | - G P Garlet
- Department of Biological Sciences, School of Dentistry of Bauru, Universidade de São Paulo, São Paulo, Brazil
| | - D G Souza
- Department of Microbiology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
| | - F S Machado
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
| | - I Andrade
- Department of Dentistry, Pontifícia Universidade Católica de Minas Gerais, Minas Gerais, Brazil
| | - M M Teixeira
- Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
| | - T A Silva
- Department of Oral Pathology and Surgery, Faculty of Dentistry, Universidade Federal de Minas Gerais, Minas Gerais, Brazil.
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Macari S, Duffles LF, Queiroz-Junior CM, Madeira MFM, Dias GJ, Teixeira MM, Szawka RE, Silva TA. Oestrogen regulates bone resorption and cytokine production in the maxillae of female mice. Arch Oral Biol 2014; 60:333-41. [PMID: 25438102 DOI: 10.1016/j.archoralbio.2014.11.010] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [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: 05/09/2014] [Revised: 09/03/2014] [Accepted: 11/16/2014] [Indexed: 11/26/2022]
Abstract
Oestrogen plays major role in bone metabolism/remodelling. Despite of well-established effect of oestrogen deficiency on long bones, it remains unclear whether alveolar bone is affected. We aimed to determine the effect of oestrogen-deficiency in the alveolar bone microarchitecture. C57BL6/J and Balb/c mice were ovariectomized and implanted with oil-(OVX) or 17β-estradiol (E2)-containing (OVX+E2) capsules. Ovary-intact mice were used as controls. The dose of E2 replacement was selected based on trophic effects on the uterus and femur bone loss. As determined by maxillary alveolar bone MicroCT analysis, both C57BL6/J and Balb/c OVX mice displayed decreased trabecular thickness, bone density and bone volume, and increased trabecular separation at 15 and 30 days after ovariectomy. These effects were associated with a reduction of trabecular bone percentage and cortical thickness in the femur. A significant loss of alveolar bone crest was also associated with ovariectomy in both mice strains. The E2 replacement fully prevented ovariectomy-induced alterations in the alveolar and femoral bones. Moreover, TNF-α (tumour necrosis factor-α) levels and RANKL/OPG (receptor activator of NF-κB ligand/osteoprotegerin) ratio were increased in the maxilla after OVX, and these responses were also reversed by E2. In conclusion, oestrogen deficiency causes maxillary alveolar bone loss, which is similar to the effects found in the femur. The release of inflammatory molecules like TNF-α, RANKL and OPG is the potential mechanism to the decrease of bone quality and alveolar bone crest.
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Affiliation(s)
- Soraia Macari
- Department of Oral Pathology and Surgery, Faculty of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Letícia F Duffles
- Department of Oral Pathology and Surgery, Faculty of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Celso M Queiroz-Junior
- Department of Oral Pathology and Surgery, Faculty of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Mila F M Madeira
- Department of Oral Pathology and Surgery, Faculty of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - George J Dias
- Department of Anatomy, University of Otago, Dunedin, New Zealand
| | - Mauro M Teixeira
- Department of Biochemistry and Immunology, Biological Science Institute, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Raphael E Szawka
- Department of Physiology and Biophysics, Biological Science Institute, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Tarcília A Silva
- Department of Oral Pathology and Surgery, Faculty of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
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Madeira MFM, Queiroz-Junior CM, Cisalpino D, Werneck SMC, Kikuchi H, Fujise O, Ryffel B, Silva TA, Teixeira MM, Souza DG. MyD88 is essential for alveolar bone loss induced by Aggregatibacter actinomycetemcomitans lipopolysaccharide in mice. Mol Oral Microbiol 2013; 28:415-24. [PMID: 23906379 DOI: 10.1111/omi.12034] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/09/2013] [Indexed: 12/20/2022]
Abstract
Aggregatibacter actinomycetemcomitans is a Gram-negative bacteria highly associated with localized aggressive periodontitis. The recognition of microbial factors, such as lipopolysaccharide from A. actinomycetemcomitans ((Aa)LPS), in the oral environment is made mainly by surface receptors known as Toll-like receptors (TLR). TLR4 is the major LPS receptor. This interaction leads to the production of inflammatory cytokines by myeloid differentiation primary-response protein 88 (MyD88) -dependent and -independent pathways, which may involve the adaptor Toll/interleukin-1 receptor-domain-containing adaptor inducing interferon-β (TRIF). The aim of this study was to assess the involvement of MyD88 in alveolar bone loss induced by (Aa)LPS in mice. C57BL6/J wild-type (WT) mice, MyD88, TRIF or TRIF/MyD88 knockout mice received 10 injections of Aa LPS strain FDC Y4 (5 μg in 3 μl), in the palatal gingival tissue of the right first molar, every 48 h. Phosphate-buffered saline was injected in the opposite side and used as control. Animals were sacrificed 24 h after the 10th injection and the maxillae were removed for macroscopic and biochemical analyses. The injections of Aa LPS induced significant alveolar bone loss in WT mice. In the absence of MyD88 or TRIF/MyD88 no bone loss induced by (Aa)LPS was observed. In contrast, responses in TRIF(-/-) mice were similar to those in WT mice. Diminished bone loss in the absence of MyD88 was associated with fewer TRAP-positive cells and increased expression of osteoblast markers, RUNX2 and osteopontin. There was also reduced tumor necrosis factor-α production in MyD88(-/-) mice. There was less osteoclast differentiation of hematopoietic bone marrow cells from MyD88(-/-) mice after (Aa)LPS stimulation. Hence, the signaling through MyD88 is pivotal for (Aa)LPS-induced osteoclast formation and alveolar bone loss.
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Affiliation(s)
- M F M Madeira
- Departamento de Microbiologia, ICB, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil; Departamento de Bioquímica e Imunologia, ICB, UFMG, Belo Horizonte, MG, Brazil
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Santana AR, Amorim FF, Soares FB, de Souza Godoy LG, de Jesus Almeida L, Rodrigues TA, de Andrade Filho GM, Silva TA, da Silva Neto OG, Rocha PHG, Ferreira PN, Amorim APP, Bastos de Moura E, de Araújo Neto JA, de Oliveira Maia M. Comparison of CURB-65 and CRB-65 as predictors of death in community-acquired pneumonia in adults admitted to an ICU. Crit Care 2013. [PMCID: PMC3891493 DOI: 10.1186/cc12655] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
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36
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Santana AR, Amorim FF, Soares FB, de Souza Godoy LG, de Jesus Almeida L, Rodrigues TA, Menezes de Andrade Filho G, Silva TA, de Souza JL, Ogliari KCM, Ferreira PN, Amorim APP, de Moura EB, de Araújo Neto JA, de Oliveira Maia M. Acute kidney injury according to RIFLE criteria in an ICU: incidence and mortality impact. Crit Care 2013. [PMCID: PMC3890969 DOI: 10.1186/cc12646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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37
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Santana AR, Amorim FF, Soares FB, de Souza Godoy LG, de Jesus Almeida L, Rodrigues TA, de Andrade Filho GM, Silva TA, de Carvalho Santos LC, de Araújo MPB, Ferreira PN, Amorim APP, de Moura EB, de Araújo Neto JA, de Oliveira Maia M. Role of hypothermia in the immediate postoperative period on mortality in a surgical ICU. Crit Care 2013. [PMCID: PMC3891297 DOI: 10.1186/cc12675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Filho GM, Silva TA, Santana AR, Soares FB, Almeida LJ, Godoy LG, Rodrigues TA, Maia MO, Neto JA, Amorim AP, Moura EB, Amorim FF. Impact of the time elapsed between ICU request and actual admission on mortality and length of stay. Crit Care 2013. [PMCID: PMC3643162 DOI: 10.1186/cc12425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Amorim FF, Moura EB, Santana AR, Soares FB, Godoy LG, Rodrigues TA, Almeida LJ, FIlho GM, Silva TA, Amorim AP, Neto JA, Maia MO. Lactate clearance as a determinant of mortality in surgical patients. Crit Care 2013. [PMCID: PMC3642496 DOI: 10.1186/cc12154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Omena EP, Lavrado HP, Paranhos R, Silva TA. Spatial distribution of intertidal sandy beach polychaeta along an estuarine and morphodynamic gradient in an eutrophic tropical bay. Mar Pollut Bull 2012; 64:1861-1873. [PMID: 22818168 DOI: 10.1016/j.marpolbul.2012.06.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2012] [Revised: 05/28/2012] [Accepted: 06/02/2012] [Indexed: 06/01/2023]
Abstract
The spatial distribution of polychaeta along pollution gradients often reflects different degrees of disturbance. In order to evaluate polychaeta fauna of an organically polluted tropical bay, 20 sandy beaches distributed in five areas were sampled. The relationship between community structure, slope, beach index, exposure, sediment and water quality parameters were analysed. Multivariate analysis of variance (PERMANOVA) showed differences among areas and beaches. Scolelepis chilensis dominated at mouth of bay beaches whereas Streblospio gynobranchiata and Capitella capitata complex, at inner beaches. Highest polychaete density was recorded at areas 3 and 5 with the dominance of Saccocirrus sp. and the organic indicator species C. capitata complex and Polydora sp. The most important factors obtained from canonical analysis were sorting, slope, mud and organic matter percentage. Marine biotic index (AMBI) showed that areas 3 and 5 were highly affected by anthropogenic factors, given that a poor polychaeta fauna, dominated by opportunistic species, were found. Polychaete assemblages were affected by eutrophication along an estuarine gradient as well as by morphodynamic condition of the beaches.
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Affiliation(s)
- E P Omena
- Departamento de Biologia Marinha, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Ilha do Fundão, 21941-913 Rio de Janeiro (RJ), Brazil.
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Resende RG, Correia-Silva JDF, Silva TA, Xavier SG, Bittencourt H, Gomez RS, Abreu MHNG. Saliva and blood interferon gamma levels andIFNGgenotypes in acute graft-versus-host disease. Oral Dis 2012; 18:816-22. [DOI: 10.1111/j.1601-0825.2012.01955.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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de Souza FTA, Teixeira AL, Amaral TMP, dos Santos TPM, Abreu MHNG, Silva TA, Kummer A. Psychiatric disorders in burning mouth syndrome. J Psychosom Res 2012; 72:142-6. [PMID: 22281456 DOI: 10.1016/j.jpsychores.2011.11.008] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2011] [Revised: 11/08/2011] [Accepted: 11/11/2011] [Indexed: 11/16/2022]
Abstract
BACKGROUND Prevalence of psychiatric disorders in burning mouth syndrome (BMS) is high, but their role in the pathogenesis of BMS remains unclear. OBJECTIVE The authors aimed to assess the frequency of psychiatric disorders and the severity of psychopathology in BMS. METHODS Thirty BMS patients and thirty-one controls underwent a psychiatric evaluation which included a structured interview (MINI-Plus) and five psychometric scales. A Visual Analogue Scale (VAS) was used to measure the intensity of burning sensation. RESULTS Patients with BMS showed a higher frequency of current major depressive disorder, past major depressive disorder, generalized anxiety disorder, hypochondria and cancerophobia (p<0.05). In BMS patients, generalized anxiety disorder was significantly associated with current major depression and social phobia (p<0.05). As expected, cancerophobia was significantly associated with hypochondria (p<0.05). Patients with BMS had higher scores in Hamilton Rating Scale for Depression (HRSD), Beck Depression Inventory (BDI), State-Trait Anxiety Inventory (STAI) and Dutch Fatigue Scale (DUFS) (p<0.05). CONCLUSION BMS patients may have a particular psychological and/or psychiatric profile. Psychometric scales might be useful in screening psychiatric disorders, as well as for assessment of treatment outcomes. In the presence of clinical relevant psychiatric symptoms, patients must be treated appropriately.
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Affiliation(s)
- Fabrício T A de Souza
- Dept. of Oral Pathology, School of Dentistry, School of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil
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Castor MGM, Rezende BM, Resende CB, Bernardes PTT, Cisalpino D, Vieira AT, Souza DG, Silva TA, Teixeira MM, Pinho V. Platelet-activating factor receptor plays a role in the pathogenesis of graft-versus-host disease by regulating leukocyte recruitment, tissue injury, and lethality. J Leukoc Biol 2012; 91:629-39. [PMID: 22301794 DOI: 10.1189/jlb.1111561] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
PAF is a potent lipid mediator involved in several manifestations of acute inflammation, including leukocyte influx, leukocyte interaction with endothelium, and production of inflammatory cytokines. The present study evaluated the relevance of PAFR for the pathogenesis of acute GVHD using a model of adoptive transfer of splenocytes from WT or PAFR(-/-) C57BL/6J to B6D2F1 mice. Mice, which received PAFR(-/-) splenocytes or treatment with the PAFR antagonist, showed reduced clinical signs of disease and no mortality. In GVHD mice receiving PAFR(-/-) splenocytes, there was deceased bacterial translocation and tissue injury. Furthermore, production of proinflammatory cytokines and chemokines (TNF-α, IFN-γ, CCL2, CCL3, and CCL5) and accumulation of CD8(+) cells in intestine and liver were reduced in mice transplanted with the PAFR(-/-) splenocyte. Mechanistically, an absence or pharmacological blockade of PAFR was associated with decreased rolling and adhesion of leukocytes to the mesenteric microcirculation, as assessed by intravital microscopy. Despite decreased GVHD, there was maintained GVL activity when PAFR(-/-) leukocytes were transferred into WT mice. In conclusion, PAFR on donor leukocytes plays a critical role in GVHD by mediating leukocyte influx and cytokine production in target tissues. PAFR antagonist may potentially be useful in the treatment of GVHD in bone marrow-transplanted patients.
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Affiliation(s)
- Marina G M Castor
- Laboratório de Imunofarmacologia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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de Souza FTA, Amaral TMP, dos Santos TPM, Abdo EN, Aguiar MCF, Teixeira AL, Kummer AM, Abreu MHNG, Silva TA. Burning Mouth Syndrome: A Therapeutic Approach Involving Mechanical Salivary Stimulation. Headache 2011; 52:1026-34. [DOI: 10.1111/j.1526-4610.2011.02037.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Lopes F, Coelho FM, Costa VV, Vieira ÉLM, Sousa LP, Silva TA, Vieira LQ, Teixeira MM, Pinho V. Resolution of neutrophilic inflammation by H2O2 in antigen-induced arthritis. ACTA ACUST UNITED AC 2011; 63:2651-60. [PMID: 21567381 DOI: 10.1002/art.30448] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
OBJECTIVE Neutrophil accumulation contributes to the pathogenesis of rheumatoid arthritis. This study was undertaken to examine the ability of H2O2 to influence neutrophilic inflammation in a model of antigen-induced arthritis (AIA) in mice. METHODS AIA was induced by administration of antigen into the knee joints of previously immunized mice. Neutrophil accumulation was measured by counting neutrophils in the synovial cavity and assaying myeloperoxidase activity in the tissue surrounding the mouse knee joint. Apoptosis was determined by morphologic and molecular techniques. The role of H2O2 was studied using mice that do not produce reactive oxygen species (gp91phox-/- mice) and drugs that enhance the generation or enhance the degradation of H2O2. RESULTS Antigen challenge of immunized mice induced neutrophil accumulation that peaked at 12-24 hours after challenge. H2O2 production peaked at 24 hours, after which time, the inflammation resolved. Neutrophil recruitment was similar in wild-type and gp91phox-/- mice, but there was delayed resolution in gp91phox-/- mice or after administration of catalase. In contrast, administration of H2O2 or superoxide dismutase (SOD) resolved neutrophilic inflammation. The resolution of inflammation induced by SOD or H2O2 was accompanied by an increase in the number of apoptotic neutrophils. Apoptosis was associated with an increase in Bax and caspase 3 cleavage and was secondary to phosphatidylinositol 3-kinase (PI3K)/Akt activation. CONCLUSION Our findings indicate that levels of H2O2 increase during neutrophil influx and are necessary for the natural resolution of neutrophilic inflammation. Mechanistically, enhanced levels of H2O2 (endogenous or exogenous) inhibit p-Akt/NF-κB and induce apoptosis of migrated neutrophils. Modulation of H2O2 production may represent a novel strategy for controlling neutrophilic inflammation in the joints.
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Affiliation(s)
- Fernando Lopes
- Departamento de Morfologia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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Souza FTA, Santos TPM, Bernardes VF, Teixeira AL, Kümmer AM, Silva TA, Abreu MHNG. The impact of burning mouth syndrome on health-related quality of life. Health Qual Life Outcomes 2011; 9:57. [PMID: 21801374 PMCID: PMC3158539 DOI: 10.1186/1477-7525-9-57] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2011] [Accepted: 07/29/2011] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Burning mouth syndrome is a chronic disorder that is characterized by a burning sensation and a normal clinical appearance of the oral mucosa. This condition often affects the health-related quality of life in patients. As such, the aim of this study was to compare the health-related quality of life of patients with BMS and healthy controls, using the validated Portuguese versions of the SF-36 and OHIP-49 questionnaires. METHODS A calculated sample of Brazilian patients with BMS (n = 26) was compared with a control group (n = 27), paired for gender and age. Sociodemographic information and clinical characteristics were obtained, and interviews were conducted using the SF-36 and OHIP-49. To evaluate the normality of the variables, we used the Kolmogorov-Smirnov test. The chi-square test, Fisher exact test and Mann-Whitney U-Test were used to compare sociodemographic and clinical characteristics of individuals with BMS and controls Mann-Whitney U-test were carried out to compare SF-36 and OHIP-49 between BMS patients and controls. The significance level was set at 0.05. To compare the dimensions of the SF-36 and OHIP-49 between BMS patients and controls, we considered Bonferroni correction. So for comparison of the dimensions, the significance level was set at 0.00625 for SF-36 and at 0.00714 for OHIP-49. RESULTS The clinical and demographic data were similar in both groups (P > 0.05). SF-36 scores were significantly lower in all domains for patients with BMS (P < 0.00625). OHIP-49 scores were higher for individuals with BMS (P < 0.00714). CONCLUSIONS BMS has a negative impact on the health-related quality of life of individuals, as can be shown by instruments such as the SF-36 and OHIP-49. So, the evaluation of quality of life might be useful for more information about the nature and severity of BMS, to evaluate the effects of treatment protocols, in order to improve their outcomes by means a humanized clinical practice.
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Affiliation(s)
- Fabrício T A Souza
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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Sachs D, Coelho FM, Costa VV, Lopes F, Pinho V, Amaral FA, Silva TA, Teixeira AL, Souza DG, Teixeira MM. Cooperative role of tumour necrosis factor-α, interleukin-1β and neutrophils in a novel behavioural model that concomitantly demonstrates articular inflammation and hypernociception in mice. Br J Pharmacol 2011; 162:72-83. [PMID: 20942867 DOI: 10.1111/j.1476-5381.2010.00895.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
UNLABELLED BACKGROUND AND PURPOSE; Chronic joint inflammation and pain are the hallmarks of disease in patients with inflammatory arthritis, notably rheumatoid arthritis. The aim of the present study was to investigate the relative contribution of tumour necrosis factor (TNF)-α, interleukin (IL)-1β and neutrophil influx for joint inflammation and nociception in a novel murine model of antigen-induced arthritis (AIA). EXPERIMENTAL APPROACH AIA was induced by administration of antigen into knee joint of previously immunized mice. Neutrophil accumulation was determined by counting neutrophils in the joints and assessing myeloperoxidase activity in tissues surrounding the joints. TNF-α, IL-1β and CXCL-1 were measured by elisa. Mechanical hypernociception was assessed in parallel, using an electronic pressure meter. KEY RESULTS Hypernociception was dependent on antigen dose and the time after its administration; it was prevented by treatment with morphine and associated with neutrophil infiltration and local production of TNF-α, IL-1β and CXCL-1. Administration of a chimeric monoclonal antibody to TNF-α (infliximab) or IL-1receptor antagonist prevented neutrophil influx and hypernociception, and this was comparable to the effects of dexamethasone. Treatment with fucoidin (a leucocyte adhesion inhibitor) greatly suppressed neutrophil influx and local production of TNF-α and IL-1β, and hypernociception. CONCLUSIONS AND IMPLICATIONS In conclusion, the present study describes a new model that allows for the concomitant evaluation of articular hypernociception and inflammation. Using this system, we demonstrated that a positive feedback loop involving neutrophil influx and the pro-inflammatory cytokines TNF-α and IL-1β is necessary for articular hypernociception after antigen challenge of immunized mice.
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Affiliation(s)
- Daniela Sachs
- Imunofarmacologia, Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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Castor MGM, Rezende BM, Bernardes PTT, Vieira AT, Vieira ELM, Arantes RME, Souza DG, Silva TA, Teixeira MM, Pinho V. PI3Kγ controls leukocyte recruitment, tissue injury, and lethality in a model of graft-versus-host disease in mice. J Leukoc Biol 2011; 89:955-64. [PMID: 21402770 DOI: 10.1189/jlb.0810464] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
PI(3)Kγ is thought to mediate leukocyte migration to injured tissues and may be important in the pathogenesis of various T-lymphocyte-dependent pathologies, including autoimmune and inflammatory diseases. The present study evaluated the relevance of PI(3)Kγ in donor cells for the pathogenesis of acute GVHD using a model of adoptive transfer of splenocytes from WT or PI(3)Kγ(-/-) C57BL/6J mice to B6D2F1 mice, and mice that received PI(3)Kγ(-/-) cells showed reduced clinical signs of disease, bacterial translocation, tissue injury, and lethality rates. This was associated with reduced production of proinflammatory cytokines and chemokines (TNF-α, IFN-γ, CCL2, CCL3, and CCL5) and reduced infiltration of CD8(+), CD4(+), and CD11c(+) cells in the small intestine. Mechanistically, in addition to decreasing production of proinflammatory mediators, absence or pharmacological blockade of PI(3)Kγ was associated with decreased rolling and adhesion of leukocytes to the mesenteric microcirculation, as assessed by intravital microscopy. Despite decreased GVHD, there was maintained GVL activity when PI(3)Kγ(-/-) leukocytes were transferred into WT mice. In conclusion, PI(3)Kγ plays a critical role in GVHD by mediating leukocyte influx and activation in tissues. PI(3)Kγ inhibitors may be useful in the treatment of GVHD in patients undergoing BMT.
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Affiliation(s)
- Marina G M Castor
- Laboratório de Imunofarmacologia, Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, Pampulha 31270-901, Belo Horizonte, MG, Brazil
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Correia-Silva JF, Resende RG, Arão TC, Abreu MHNG, Teixeira MM, Bittencourt H, Silva TA, Gomez RS. HCMV gB genotype and its association with cytokine levels in hematopoietic stem cell transplantation. Oral Dis 2011; 17:530-7. [PMID: 21332604 DOI: 10.1111/j.1601-0825.2011.01801.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Glycoprotein B (gB) has been implicated in determining the pathogenicity and clinical outcomes of human cytomegalovirus (HCMV) disease. OBJECTIVE The purpose of this study was to assess the prevalence of gB genotypes in allogeneic hematopoietic stem cell transplantation (allo-HSCT) and the relationship between it and cytokine levels in saliva and blood samples. The impact of these parameters on patients' survival was also investigated. METHODS Samples were obtained from 63 patients receiving an allo-HSCT. HCMV gB genotyping was carried out by multiplex nested PCR. The cytokine levels were assessed using ELISA assay. RESULTS A single or mixed genotype infection was detected in the saliva and blood of 36/63 and 52/63 subjects, respectively. Patients with gB2 in their saliva showed lower IL-10 levels in comparison with patients without gB2. Reduced blood levels of IFN-γ and IL-1β were also found in recipients with the HCMV gB4 genotype compared with patients without it. Decreased IL-1β and increased IL-10 blood levels were associated with lower survival. However, HCMV gB genotypes have no impact on patient outcome. CONCLUSION Decreased IL-1β and increased IL-10 levels in the blood are associated with lower survival. HCMV genotypes are associated with different cytokine levels in saliva and blood.
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Affiliation(s)
- J F Correia-Silva
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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Abstract
INTRODUCTION To evaluate the microscopic characteristics and densities (per mm(2) ) of tryptase(+) mast cells, CD4(+) T helper lymphocytes, CD45RO(+) memory T lymphocytes, foxp3(+) T regulatory lymphocytes, CD20(+) B lymphocytes, CD68(+) macrophages, and CD31(+) blood vessels in human dental pulpitis (n=38) and healthy pulpal tissue (n=6). METHODOLOGY The pulps of 38 human teeth with a clinical diagnosis of irreversible pulpitis were removed by pulpectomy. The pulp tissue was immersed in 10% buffered formalin for evaluation using light microscopy. Tryptase, CD4, CD45RO, foxp3, CD20, CD68, and CD31 expressions were analysed using immunohistochemistry; other microscopic features, such as intensity of inflammatory infiltrate and collagen deposition, were evaluated using haematoxylin and eosin stain. Wilcoxon and Mann-Whitney tests were used for statistical analysis. The significance level was set at α=5%. RESULTS Two microscopic patterns of pulpitis were found: group 1 (G1) (n=15) had an intense inflammatory infiltrate and mild collagen deposition; conversely, group 2 (G2) (n=23) had a scarce inflammatory infiltrate and intense collagen deposition. The numbers of CD68(+) macrophages (P=0.004) and CD20(+) B (P=0.068) lymphocytes and the density of blood vessels (P=0.002) were higher in G1 than in G2. However, a similar number of CD4(+) and CD45RO(+) T lymphocytes was found in both groups (P>0.05). When present, tryptase(+) mast cells were equally distributed in G1 and G2, whereas foxp3(+) T regulatory lymphocytes were detected in 59% and 14% of the samples of G1 and G2. Controls exhibited lower numbers of foxp3, tryptase, CD4, CD45RO, CD68 and CD20 positive cells than G1 and G2. CONCLUSIONS Irreversible pulpitis had distinct microscopic features with important quantitative and qualitative differences in inflammatory cell infiltration.
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Affiliation(s)
- K F Bruno
- Department of Endodontics, Federal University of Goiás, Goiânia, GO, Brazil
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