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Silva JC, Ferreira-Júnior AEC, Silva PGB, Nunes Alves APN, Mota MRL, Carvalho EV, Fechine PBA, Feitosa VP. Avaliação da Adesão, Sorção de Água e Solubilidade de Resinas Compostas Autoadesivas Experimentais para Capeamento Pulpar Direto. J Health Scie 2018. [DOI: 10.17921/2447-8938.2017v19n5p102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
O objetivo foi analisar resinas compostas experimentais para capeamento pulpar direto em propriedades físico-químicas selecionadas, comparando com hidróxido de cálcio fotopolimerizável e MTA. Duas resinas compostas capeadoras foram preparadas, uma sem adição de partículas bioativas (controle) e a outra com 30% em peso (experimental) de nanopartículas de hidroxiapatita adsorvidas com sinvastatina (10%), com glutationa (10%) e de beta fosfato tricálcio (10%). Foram utilizados 36 terceiros molares hígidos extraídos, onde foi realizado preparo cavitário na região coronária até atingir a câmara pulpar para posterior restauração com um dos materiais. Os espécimes foram cortados em fatias (1mm) e essas foram submetidas ao teste de resistência de união ao push-out. Espécimes em forma de disco (n8) foram preparados e avaliados (ISO4049) quanto a sorção e solubilidade. A análise estatística foi feita com ANOVA e teste de Tukey (a5%). Os resultados de resistência de união mostraram que o MTA e o hidróxido de cálcio apresentaram pior adesão do que as resinas, e os maiores valores foram obtidos com a resina experimental (p<0,05). Maior sorção de água foi observada com o hidróxido de cálcio e os demais materiais não apresentaram diferenças estatísticas. O hidróxido de cálcio obteve maior solubilidade que a resina controle e a experimental (p<0,05). Em conclusão, a resina experimental com partículas bioativas promove maior adesão à dentina e menor sorção e solubilidade que hidróxido de cálcio e MTA, esses materiais que são tradicionalmente usados para capeamento pulpar.Palavras-chave: Dental Pulp Capping. Simvastatin Calcium Hydroxide.
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Morais GB, Viana DA, Silva FMO, Xavier Júnior FAF, Farias KM, Pessoa CD, Silveira JAM, Alves APNN, Mota MRL, Silva FDO, Sampaio CMS, Verdugo JMG, Evangelista JSAM. Polarization microscopy as a tool for quantitative evaluation of collagen using picrosirius red in different stages of CKD in cats. Microsc Res Tech 2017; 80:543-550. [DOI: 10.1002/jemt.22830] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 11/03/2016] [Accepted: 12/11/2016] [Indexed: 11/05/2022]
Affiliation(s)
- G. B. Morais
- Faculdade de Veterinária; Universidade Estadual do Ceará; Ceará Brazil
| | - D. A. Viana
- Faculdade de Veterinária; Universidade Estadual do Ceará; Ceará Brazil
| | - F. M. O. Silva
- Faculdade de Veterinária; Universidade Estadual do Ceará; Ceará Brazil
| | | | - K. M. Farias
- Departamento de Fisiologia e Farmacologia; Universidade Federal do Ceará; Ceará Brazil
| | - C. D'Ó Pessoa
- Departamento de Fisiologia e Farmacologia; Universidade Federal do Ceará; Ceará Brazil
| | - J. A. M. Silveira
- Departamento de Fisiologia e Farmacologia; Universidade Federal do Ceará; Ceará Brazil
| | - A. P. N. N. Alves
- Faculdade de Farmácia Odontologia e Enfermagem; Universidade Federal do Ceará; Ceará Brazil
| | - M. R. L. Mota
- Faculdade de Farmácia Odontologia e Enfermagem; Universidade Federal do Ceará; Ceará Brazil
| | - F. D. O. Silva
- Departamento de Geologia; Universidade Federal do Ceará; Ceará Brazil
| | - C. M. S. Sampaio
- Centro de Ciências da Saúde; Universidade Estadual do Ceará; Ceará Brazil
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de Barros Silva PG, Verde MEQL, Brizeno LAC, Wong DVT, Lima Júnior RCP, Sousa FB, Mota MRL, Alves APNN. Immune cell profile of dental pulp tissue treated with zoledronic acid. Int Endod J 2017; 50:1067-1076. [PMID: 27977859 DOI: 10.1111/iej.12734] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 12/07/2016] [Indexed: 02/02/2023]
Abstract
AIM To characterize the pulp immune cell profile in the teeth of rats treated with zoledronic acid (ZA). METHODOLOGY Male Wistar rats (n = 6 per group) received four intravenous infusions of ZA at doses of 0.04, 0.20 or 1.00 mg kg-1 ZA or saline (control). On the 70th experimental day, they were euthanized. The first right molar was examined microscopically and submitted to toluidine blue reaction and immunohistochemical for CD68, tumour necrosis Factor (TNF)-α, interleukin (IL)-1β, inducible nitric oxide synthase (iNOS), nuclear factor kappa B (NF-kB) and IL-18 binding protein (IL-18 bp). The presence of ectasic/dilated vessels and inflammatory cells was analysed, and mast cells and mononuclear CD68-positive cells were counted along with the intensity of immunostaining (0-3) for inflammatory markers in odontoblasts and nonodontoblasts pulp cells. The Kruskal-Wallis/Dunn's test (scores or quantitative data) and the chi-squared test (categorical data) were used (GraphPad Prism 5.0, P < 0.05). RESULTS There was no differences in the number of animals exhibiting dilated/ectasic blood vessels (P = 0.242) and inflammatory cells (P = 0.489) or in the number of mast cells (P = 1.000). However, there was an increase in mononuclear CD68-positive cells (P = 0.026), immunostaining of TNF-α (P = 0.020), IL-1β (P = 0.027) and iNOS (P = 0.001) in odontoblasts, and IL-1β (P = 0.013) in nonodontoblast pulp cells dose-dependently. NFkB (nucleus and cytoplasm) and IL-18 bp did not differ between groups. CONCLUSION ZA modified the immune cell profile in the dental pulp, increasing the number of macrophages and expression of pro-inflammatory markers independent of NFkB.
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Affiliation(s)
- P G de Barros Silva
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceara, Fortaleza, Ceara, Brazil
| | - M E Q L Verde
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceara, Fortaleza, Ceara, Brazil
| | - L A C Brizeno
- Department of Biotechnology, Faculty of Biotechnology, Federal University of Ceara, Fortaleza, Ceara, Brazil
| | - D V T Wong
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceara, Fortaleza, Ceara, Brazil
| | - R C P Lima Júnior
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceara, Fortaleza, Ceara, Brazil
| | - F B Sousa
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceara, Fortaleza, Ceara, Brazil
| | - M R L Mota
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceara, Fortaleza, Ceara, Brazil
| | - A P N N Alves
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceara, Fortaleza, Ceara, Brazil
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Mourão RVC, Júnior ECP, Barros Silva PG, Turatti E, Mota MRL, Alves APNN. Study of the relationship between mononuclear inflammatory infiltrate and Ki-67 and basement membrane and extracellular matrix protein expression in radicular cysts. Int Endod J 2015; 49:447-53. [PMID: 26011468 DOI: 10.1111/iej.12472] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Accepted: 05/18/2015] [Indexed: 11/27/2022]
Abstract
AIM To evaluate the relationship between mononuclear inflammatory infiltrate and the expression of a proliferative immunomarker (Ki-67) as well as to evaluate basement membrane and extracellular matrix proteins (laminin and collagen type IV) in radicular cysts and dentigerous cysts (DC). METHODOLOGY Immunohistochemical analyses were performed in heavily inflamed radicular cysts (HIRC), slightly inflamed radicular cysts (SIRC) and DC (n = 20) using Ki-67 (Dako(®) , 1 : 50), anticollagen type IV (DBS(®) , 1 : 40) and antilaminin (DBS(®) , 1 : 20). The data were analysed using anova/Tukey's test (Ki-67) and Kruskal-Wallis/Dunn's test (collagen type IV and laminin) (P < 0.05). RESULTS The immunoexpression of Ki-67 was significantly greater in the SIRC group compared with the HIRC and DC (P = 0.0040). Likewise, the immunoexpression of collagen type IV in the basement membrane of the SIRC group was significantly more continuous (P = 0.0475) than in the HIRC group. DC had significantly less collagen type IV in extracellular matrix immunoexpression than HIRC and SIRC (P = 0.0246). Laminin was absent in the basement membrane in the SIRC and DC groups, and the extracellular matrix of the HIRC was weak and punctate. CONCLUSION The presence of inflammatory factors in the radicular cyst wall modified the expression of proliferation factors in the epithelial lining and the expression of collagen type IV and laminin in the basement membrane, but did not modify extracellular matrix behaviour in radicular cysts.
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Affiliation(s)
- R V C Mourão
- Department of Pathology and Forensic Medicine, School of Medicine, Federal University of Ceará, Fortaleza, Brazil
| | - E C Pinheiro Júnior
- Division of Endodontics, School of Dentistry, Fortaleza University, Fortaleza, Brazil
| | - P G Barros Silva
- Division of Oral Pathology, School of Dentistry, Federal University of Ceará, Fortaleza, Brazil
| | - E Turatti
- Division of Oral Pathology, School of Dentistry, Fortaleza University, Fortaleza, Brazil
| | - M R L Mota
- Division of Oral Pathology, School of Dentistry, Federal University of Ceará, Fortaleza, Brazil
| | - A P N N Alves
- Division of Oral Pathology, School of Dentistry, Federal University of Ceará, Fortaleza, Brazil
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Silva PGB, Cavalcante GM, Fernandes CP, Sousa FB, Mota MRL, Alves APNN. Clinic-pathological Study and Comparative Analysis of Orofacial Lesions in a Brazilian Population of Children and Adolescents. Pesqui bras odontopediatria clín integr 2014. [DOI: 10.4034/pboci.2014.142.10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Alencar VBM, Assreuy AMS, Alencar NMN, Meireles AVP, Mota MRL, Aragão KS, Cajazeiras JB, Nagano CS, Brito GAC, Silva LIMM, Pinto VPT, Sampaio AH, Debray H, Cavada BS, Ribeiro RA. Lectin of Pisum arvense seeds induces in-vivo and in-vitro neutrophil migration. J Pharm Pharmacol 2010; 57:375-81. [PMID: 15807994 DOI: 10.1211/0022357055579] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Abstract
PAL is a glucose/mannose-specific lectin isolated from Pisum arvense seeds. Previously, we demonstrated the capacity of other leguminous lectins to induce oedema formation and neutrophil stimulation. To investigate the potential pro-inflammatory activity of PAL, we have studied its ability to induce neutrophil migration into peritoneal cavities of rats and neutrophil chemotaxis in-vitro. The role of resident cells and sugar residues on PAL activity was analysed. PAL or saline (control) were administered intraperitoneally to rats, and total and differential leucocyte (macrophages, neutrophils and mast cells) counts were performed. The role of resident cells on the PAL effect was evaluated using three strategies: reducing the total resident cell population by lavage of rat cavities with saline; increasing macrophage population by treating animals with thioglycolate; and depleting mast cell population by subchronic treatment of rats with compound 48/80. PAL induced in-vitro and in-vivo neutrophil migration. In-vivo, PAL (50, 100, 200 and 300 μg) significantly (P < 0.05) and dose-dependently increased neutrophil migration by 600, 740, 900 and 940%, respectively, showing maximal effect 4 h after injection. PAL induced mononuclear cell migration. The neutrophil stimulatory effect of PAL was potentiated in animals treated with both thioglycolate and compound 48/80. The indirect lectin chemotactic effect was shown in rats injected with supernatant from cultured macrophages stimulated by PAL. In conclusion, PAL was shown to exhibit in-vivo and in-vitro proinflammatory activity. The in-vivo effect seemed to occur by a dual mechanism that was independent, but also dependent, on resident cells.
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Affiliation(s)
- V B M Alencar
- Departamento de Fisiologia e Farmacologia, Faculdade de Medicina, Universidade Federal do Ceará, Brazil, Cel Nunes de Melo, 1127, 60430-270, Fortaleza-Ceará-Brasil
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