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Martinez FEO, Bezerra TMM, Alves APNN, Fernandes IJLS, Sousa FB, de Barros Silva PG, Mota MRL. Assessment of the association of myofibroblasts and structural components of the extracellular matrix with histopathological parameters of actinic cheilitis and lower lip squamous cell carcinoma. J Oral Pathol Med 2024; 53:321-330. [PMID: 38693618 DOI: 10.1111/jop.13541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 04/09/2024] [Accepted: 04/16/2024] [Indexed: 05/03/2024]
Abstract
BACKGROUND To evaluate the presence of myofibroblasts (MFs) in the development of lip carcinogenesis, through the correlation of clinical, histomorphometric and immunohistochemical parameters, in actinic cheilitis (ACs) and lower lip squamous cell carcinomas (LLSCCs). METHODS Samples of ACs, LLSCCs, and control group (CG) were prepared by tissue microarray (TMA) for immunohistochemical TGF-β, α-SMA, and Ki-67 and histochemical hematoxylin and eosin, picrosirius red, and verhoeff van gieson reactions. Clinical and microscopic data were associated using the Mann-Whitney, Kruskal-Wallis/Dunn, and Spearman correlation tests (SPSS, p < 0.05). RESULTS ACs showed higher number of α-SMA+ MFs when compared to CG (p = 0.034), and these cells were associated with the vertical expansion of solar elastosis (SE) itself (p = 0.027). Areas of SE had lower deposits of collagen (p < 0.001), immunostaining for TGF-β (p < 0.001), and higher density of elastic fibers (p < 0.05) when compared to areas without SE. A positive correlation was observed between high-risk epithelial dysplasia (ED) and the proximity of SE to the dysplastic epithelium (p = 0.027). LLSCCs showed a higher number of α-SMA+ MFs about CG (p = 0.034), as well as a reduction in the deposition of total collagen (p = 0.009) in relation to ACs and CG. There was also a negative correlation between the amount of α-SMA+ cells and the accumulation of total collagen (p = 0.041). Collagen and elastic density loss was higher in larger tumors (p = 0.045) with nodal invasion (p = 0.047). CONCLUSIONS Our findings show the possible role of MFs, collagen fibers, and elastosis areas in the lip carcinogenesis process.
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Affiliation(s)
- Farah Essgui Orellana Martinez
- Division of Oral Pathology, Department of Dental Clinic, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará (UFC), Fortaleza, Brazil
| | - Thâmara Manoela Marinho Bezerra
- Division of Oral Pathology, Department of Dental Clinic, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará (UFC), Fortaleza, Brazil
| | - Ana Paula Negreiros Nunes Alves
- Division of Oral Pathology, Department of Dental Clinic, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará (UFC), Fortaleza, Brazil
| | | | - Fabricio Bitu Sousa
- Division of Oral Pathology, Department of Dental Clinic, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará (UFC), Fortaleza, Brazil
- Department of Dentistry, Christus University, Fortaleza, Brazil
| | - Paulo Goberlânio de Barros Silva
- Division of Oral Pathology, Department of Dental Clinic, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará (UFC), Fortaleza, Brazil
- Department of Dentistry, Christus University, Fortaleza, Brazil
| | - Mário Rogério Lima Mota
- Division of Oral Pathology, Department of Dental Clinic, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará (UFC), Fortaleza, Brazil
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Adjafre BL, Lima IC, Alves APNN, Lessa RA, Cunha AP, Pereira MG, Assreuy AMS, Mota MRL. Anti-inflammatory and healing effect of the polysaccharidic extract of Opuntia ficus-indica cladodes in cutaneous excisional wounds in rats. Int J Exp Pathol 2024; 105:33-44. [PMID: 37991201 PMCID: PMC10797432 DOI: 10.1111/iep.12498] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 04/13/2023] [Revised: 10/25/2023] [Accepted: 10/31/2023] [Indexed: 11/23/2023] Open
Abstract
This study aimed to investigate the anti-inflammatory and wound healing effects of the polysaccharide extract from Opuntia ficus-indica cladodes (TPL-Ofi) using a rat cutaneous wound model. After anaesthesia, four 7-mm-diameter dorsal wounds per animal (n = 6/group for each experimental day of evaluation) were created in female Wistar rats using a surgical punch. The animals were treated topically twice daily with TPL-Ofi (0.01-1%; treated group) or sterile saline (control group) for a period of 21 days. Ulcerated tissue was collected for analysis of histological parameters (inflammation score, number of polymorphonuclear, mononuclear, fibroblast/myofibroblasts and blood vessels), immunohistochemical (fibroblast growth factor 2 [FGF-2]) and oxidative stress markers (myeloperoxidase [MPO] and glutathione [GSH]). After 21 days of treatment, body weight, net organ weight and plasma biochemical levels were measured. TPL-Ofi, containing a total carbohydrate content of 65.5% and uronic acid at 2.8%, reduced oedema on the second day and increased the nociceptive threshold on the second and third days. TPL-Ofi reduced mononuclear infiltrate on the second and MPO activity on the fifth day. TPL-Ofi increased GSH levels on the second day, as well as fibroblast/myofibroblasts counts, neoangiogenesis and FGF-2 levels on the fifth and seventh days. No changes were observed in body weight, net organ weight or toxicology assessment. Topical application of TPL-Ofi exhibited anti-inflammatory and antinociceptive effects, ultimately improving wound healing in cutaneous wounds.
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Affiliation(s)
- Beatriz Lima Adjafre
- Superior Institute of Biomedical SciencesState University of CearáFortalezaBrazil
| | - Iásly Costa Lima
- Superior Institute of Biomedical SciencesState University of CearáFortalezaBrazil
| | | | - Rafael Aires Lessa
- Faculty of Education, Sciences and Letters of Sertão CentralState University of CearáQuixadáBrazil
| | | | - Maria Gonçalves Pereira
- Faculty of Education, Sciences and Letters of Sertão CentralState University of CearáQuixadáBrazil
| | | | - Mário Rogério Lima Mota
- Department of Dental Clinic, Faculty of Pharmacy, Dentistry and NursingFederal University of CearáFortalezaBrazil
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Dantas TS, Silva PGDB, de Oliveira Filho OV, Magalhães IA, Alves APNN, Cunha MDPSS, Mota MRL, Leitão RFDC, Sousa FB. Mu and Kappa opioid receptor immunolabeling indicates the prognosis of oropharyngeal squamous cell carcinoma: A cross-sectional observational study. J Stomatol Oral Maxillofac Surg 2023; 124:101554. [PMID: 37453566 DOI: 10.1016/j.jormas.2023.101554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 07/10/2023] [Indexed: 07/18/2023]
Abstract
BACKGROUND Opioids are the most effective drugs currently available for cancer pain management. The administration of morphine, in addition to its analgesic effect, can alter tumor development. OBJECTIVE To characterize the immunoexpression of opioid receptors µ and κ in oropharyngeal squamous cell carcinoma, and correlate it with prognostic factors, proliferation markers, and cell death. MATERIALS AND METHODS A retrospective, cross-sectional observational study was carried out with 50 patients diagnosed at Haroldo Juaçaba Hospital. Sociodemographic, clinicopathological, and overall survival data were collected, and excisional biopsies were taken for immunohistochemistry using tissue microarrays for opioid receptors µ and κ, Ki-67, and caspase-3. Immunolabeling was evaluated and correlated with other variables using Mann-Whitney, Kruskal-Wallis, Spearman correlation, log-rank (Mantel-Cox), and Cox regression tests. RESULTS Immunoexpression of opioid receptors µ and κ, Ki-67, and caspase-3 was significantly higher in p16+ and p16- primary tumors and lymph node metastases than in surgical resection margins. The overall survival of patients with p16- tumors was 57.53 ± 8.43 months and that of patients with p16+ tumors was slightly higher at 75.92 ± 11.14 months. Multivariate analysis showed that the expression of opioid receptors µ and κ in the nucleus was directly associated with a lower and higher risk of death, respectively. CONCLUSION We found increased expression of opioid receptors µ and κ in tumor tissues. The nuclear expression of opioid receptors µ and κ influences overall survival and may be a prognostic factor of oropharyngeal squamous cell carcinoma.
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Affiliation(s)
- Thinali Sousa Dantas
- Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Ceará, Brazil; Department of Dentistry, Unichristus, Fortaleza, Ceará, Brazil
| | - Paulo Goberlânio de Barros Silva
- Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Ceará, Brazil; Department of Dentistry, Unichristus, Fortaleza, Ceará, Brazil; Ceará School of Oncology, Haroldo Juaçaba Hospital, Fortaleza, Ceará, Brazil.
| | | | | | | | | | - Mário Rogério Lima Mota
- Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Ceará, Brazil
| | | | - Fabrício Bitu Sousa
- Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Ceará, Brazil; Department of Dentistry, Unichristus, Fortaleza, Ceará, Brazil; Ceará School of Oncology, Haroldo Juaçaba Hospital, Fortaleza, Ceará, Brazil
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Lima-Verde MEQ, de Queiroz Rodrigues MI, Vieira BR, Lima-Verde Neto FTG, Agressott EVH, de Sousa FB, Paschoal AR, de Barros Silva PG, Sousa FB, Mota MRL, Alves APNN. Zoledronate treatment exerts sex-independent effects on bone and dental physicochemical properties in mice jaw necrosis. J Bone Miner Metab 2023; 41:760-771. [PMID: 37673837 DOI: 10.1007/s00774-023-01465-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 08/07/2023] [Indexed: 09/08/2023]
Abstract
INTRODUCTION Bisphosphonate (BF) therapy is strongly related to the occurrence of medication-related osteonecrosis of the jaw (ONJ). However, no previous study has evaluated if there are sex-related differences on the ONJ establishment together with bone biomechanical alterations, and if they could have a synergy with the ZA treatment. MATERIALS AND METHODS This study aimed to analyze the physicochemical properties of mineralized tissues in a zoledronate (ZA)-related osteonecrosis mouse model, by a 2 × 2-factorial design, considering sex (female/male) and treatment (ZA/Saline) factors (n = 8/group). After three ZA (1.0 mg/kg) or saline administrations (days 0, 7, 14), the lower left second molar was extracted (day 42). Further ZA administration (day 49) and euthanasia (day 70) were conducted. After confirmation of ZA-induced jaw necrosis (histologic and microtomographic analysis), spectroscopic and mechanical parameters were assessed. RESULTS ZA-treated groups presented lower bone density due to impaired healing of tooth extraction socket. Sex-related alterations were also observed, with lower bone density in females. Regarding biomechanical parameters, sex and treatment exerted independent influences. ZA, although decreasing flexural modulus and yield stress, increases stiffness mainly due to a higher bone volume. Females show less resistance to higher loads compared to males (considering dimension-independent parameters). Additionally, ZA increases crystallinity in bone and dental structure (p < 0.05). In summary, although strongly related to osteonecrosis occurrence, ZA modifies bone and dental mineral matrix, improving bone mechanical properties. CONCLUSION Despite sex-dependent differences in bone biomechanics and density, osteonecrosis was established with no sex influence. No synergistic association between sex and treatment factors was observed in this study.
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Affiliation(s)
- Maria Elisa Quezado Lima-Verde
- Faculty of Pharmacy, Dentistry and Nursing, Postgraduate Program in Dentistry, Federal University of Ceará (UFC), Rua Monsenhor Furtado, S/N, Rodolfo Teofilo, Fortaleza, CE, Brazil.
| | - Maria Imaculada de Queiroz Rodrigues
- Faculty of Pharmacy, Dentistry and Nursing, Postgraduate Program in Dentistry, Federal University of Ceará (UFC), Rua Monsenhor Furtado, S/N, Rodolfo Teofilo, Fortaleza, CE, Brazil
| | - Basílio Rodrigues Vieira
- Health Sciences Center, Graduate Program in Dentistry, Federal University of Paraíba, Joao Pessoa, PB, Brazil
| | | | | | - Frederico Barbosa de Sousa
- Department of Morphology, Health Sciences Center, Federal University of Paraíba, Joao Pessoa, PB, Brazil
| | | | - Paulo Goberlânio de Barros Silva
- Faculty of Pharmacy, Dentistry and Nursing, Postgraduate Program in Dentistry, Federal University of Ceará (UFC), Rua Monsenhor Furtado, S/N, Rodolfo Teofilo, Fortaleza, CE, Brazil
| | - Fabrício Bitu Sousa
- Faculty of Pharmacy, Dentistry and Nursing, Postgraduate Program in Dentistry, Federal University of Ceará (UFC), Rua Monsenhor Furtado, S/N, Rodolfo Teofilo, Fortaleza, CE, Brazil
| | - Mário Rogério Lima Mota
- Faculty of Pharmacy, Dentistry and Nursing, Postgraduate Program in Dentistry, Federal University of Ceará (UFC), Rua Monsenhor Furtado, S/N, Rodolfo Teofilo, Fortaleza, CE, Brazil
| | - Ana Paula Negreiros Nunes Alves
- Faculty of Pharmacy, Dentistry and Nursing, Postgraduate Program in Dentistry, Federal University of Ceará (UFC), Rua Monsenhor Furtado, S/N, Rodolfo Teofilo, Fortaleza, CE, Brazil
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Soares GC, Alves APNN, de Sousa AM, Dantas TF, de Barros Silva PG, Júnior EML, de Moraes Filho MO, Paier CRK, Rodrigues FAR, Mota MRL. Evaluation of the healing potential of Nile tilapia skin collagen in traumatic oral ulcers in male rats. Arch Oral Biol 2023; 155:105793. [PMID: 37633029 DOI: 10.1016/j.archoralbio.2023.105793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 08/06/2023] [Accepted: 08/16/2023] [Indexed: 08/28/2023]
Abstract
OBJECTIVE To evaluate the healing potential of Nile tilapia skin collagen using a rat model with experimentally induced traumatic oral ulcers. DESIGN Male Wistar rats were segregated into three experimental groups (n = 8/group/euthanasia day). Ulcers were induced using a dermatological punch on the left buccal mucosa. The rats were then euthanized on days 1, 5, 10, 15, and 20 (ntotal=120 rats). Each group received topical treatment, 2x/day, with 1 % Nile tilapia skin collagen orabase (experimental group), only orabase (negative control), or Oncilom-A® orabase (positive control). Ulcer area, closure percentage, and body mass variation were measured. Slides were prepared for histological analysis, which included Picrosirius red staining (collagen analysis), and immunohistochemistry (platelet endothelial cell adhesion molecule, alpha-smooth muscle actin, and transforming growth factor-beta). RESULTS On day 15, the experimental and positive control groups displayed smaller ulcer areas, a higher percentage of closure, complete re-epithelialization, superior histological repair scores, and a reduced count of polymorphonuclear cells in comparison to the negative control group (p < 0.05). Additionally, the experimental group exhibited an increased number of blood vessels, total collagen (types I and III) and expression of platelet endothelial cell adhesion molecule, alpha-smooth muscle actin, and transforming growth factor-beta relative to the negative and positive control groups (p < 0.05). By day 20, the experimental group showed a more significant weight gain compared to the other groups (p < 0.0001). CONCLUSIONS Nile tilapia skin collagen orabase optimizes the healing of traumatic ulcers by stimulating re-epithelialization, angiogenesis, and collagenesis. Transforming growth factor-beta plays a significant role in this process.
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Affiliation(s)
- Guilherme Costa Soares
- Department of Dental Clinic, Stomatology and Oral Pathology Sector, Federal University of Ceara, Fortaleza, Brazil
| | | | - Alceu Machado de Sousa
- Department of Dental Clinic, Stomatology and Oral Pathology Sector, Federal University of Ceara, Fortaleza, Brazil
| | - Tales Freitas Dantas
- Department of Dental Clinic, Stomatology and Oral Pathology Sector, Federal University of Ceara, Fortaleza, Brazil
| | - Paulo Goberlânio de Barros Silva
- Department of Dental Clinic, Stomatology and Oral Pathology Sector, Federal University of Ceara, Fortaleza, Brazil; Ceara Cancer Institute, Hospital Haroldo Juaçaba, Fortaleza, Brazil
| | | | - Manoel Odorico de Moraes Filho
- Drug Research and Development Center, Federal University of Ceara, Fortaleza, Brazil; Translational Medicine Postgraduate Program, Federal University of Ceara, Fortaleza, Brazil
| | - Carlos Roberto Koscky Paier
- Drug Research and Development Center, Federal University of Ceara, Fortaleza, Brazil; Translational Medicine Postgraduate Program, Federal University of Ceara, Fortaleza, Brazil
| | - Felipe Augusto Rocha Rodrigues
- Drug Research and Development Center, Federal University of Ceara, Fortaleza, Brazil; Translational Medicine Postgraduate Program, Federal University of Ceara, Fortaleza, Brazil
| | - Mário Rogério Lima Mota
- Department of Dental Clinic, Stomatology and Oral Pathology Sector, Federal University of Ceara, Fortaleza, Brazil.
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Chaves IC, de Paula DS, Mota MRL, Sousa FB, de Barros Silva PG, Nunes Alves APN. Is photobiomodulation effective during maxillary expansion? A systematic review and meta-analysis. Orthod Craniofac Res 2023; 26:13-26. [PMID: 35545921 DOI: 10.1111/ocr.12590] [Citation(s) in RCA: 2] [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: 01/30/2022] [Revised: 04/27/2022] [Accepted: 05/05/2022] [Indexed: 01/07/2023]
Abstract
We performed a systematic review on literature associated with meta-analyses to elucidate whether (I) low-level laser therapy (C) compared to placebo accelerates (O) bone neoformation in the region of the midpalatal suture in (P) patients undergoing transverse maxillary expansion. Two reviewers blindly performed targeted searches using the selection criteria (PICOS) in seven major databases and three grey literature databases, employing specific terms and their entrenchments. The RevMan® software (Review Manager, version 5.3, Cochrane Collaboration) was used to adapt the RoB summary illustration to the Cochrane 2.0 tool questions. Meta-analysis was performed using standardized mean difference (SMD) and Cohen's d calculation on random effects, tests for heterogeneity (I2 ) and publication bias (Egger and Begg), and one-of-out sensitivity analysis. GRADE (Grading of Recommendations Assessment, Development and Evaluation) was used for evidence quality analysis. Among the five studies included in the qualitative synthesis, three were included in the meta-analysis. All analysed studies were prospective randomized clinical trials. The risk of bias was such that the Egger (P = .1991) and Begg (P = .024) tests showed no significant risk of publication bias. The meta-analysis showed high heterogeneity (I2 = 81%, P < .00001), and 3 months after the operation, there was no significant difference between the photobiomodulation (PBMT) group and control group (P = .850) or between the subgroups of the periods evaluated after 3 months (P = 0.490). GRADE showed an SMD of 0.62. Photobiomodulation as an adjuvant therapy in patients undergoing transverse maxillary expansion has few benefits and is limited in shape, as it contributes to bone healing in the midpalatal suture region after a period of 3 months.
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Affiliation(s)
- Igor Carvalho Chaves
- Post-Graduate Program in Clinical Dentistry, Federal University of Ceará, Fortaleza, Brazil
| | | | | | - Fabrício Bitu Sousa
- Post-Graduate Program in Clinical Dentistry, Federal University of Ceará, Fortaleza, Brazil.,Post-graduate Program in Dental Sciences, Unichristus, Fortaleza, Brazil
| | - Paulo Goberlânio de Barros Silva
- Post-Graduate Program in Clinical Dentistry, Federal University of Ceará, Fortaleza, Brazil.,Post-graduate Program in Dental Sciences, Unichristus, Fortaleza, Brazil
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De Paula DS, Malta CEN, Maciel MA, Sousa FB, Mota MRL, De Barros Silva PG, Alves APNN. RISK FACTORS FOR POST-EXODONTIA BLEEDING IN PATIENTS WITH TERMINAL HEPATIC DISEASE: A STROBE-GUIDED PROSPECTIVE COHORT. Oral Surg Oral Med Oral Pathol Oral Radiol 2022. [DOI: 10.1016/j.oooo.2022.01.643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Mota MRL, do Carmo Filho JRL, Martins TV, Soares DQ, de Sousa MP, de Barros Silva PG, Alves APNN, Pereira MG, Assreuy AMS. Polysaccharide extract of Caesalpinia ferrea (Mart) pods attenuates inflammation and enhances the proliferative phase of rat cutaneous wounds. Inflammopharmacology 2022; 30:1799-1810. [PMID: 35922736 DOI: 10.1007/s10787-022-01024-9] [Citation(s) in RCA: 3] [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: 09/10/2021] [Accepted: 06/20/2022] [Indexed: 11/30/2022]
Abstract
Pods of Caesalpinia ferrea, popularly used to treat inflammatory processes, were collected to obtain the polysaccharide-rich extract, presenting anti-inflammatory and antinociceptive effects in acute inflammation models. This study aimed to evaluate the anti-inflammatory, antinociceptive and healing activities of the polysaccharide-rich extract from Caesalpinia ferrea pods (PEp-Cf) in the rat model of cutaneous excisional wound. PEp-Cf (0.025-0.1%) or 0.9% NaCl was topically applied in the wounds at dorsal thoracic region (2×/day) during 21 days for measurement of clinical signs (hyperemia, inflammatory exudate, edema, nociception), wound size, histopathological/histomorphometric, oxidative/inflammatory markers and systemic toxicity. PEp-Cf at 0.1% reduced wound area and increased ulcer contraction [days 2 and 10 (21-78%)]. PEp-Cf reduced clinical signs [days 2 and 5 (2.2-2.8×)] and modulated the healing inflammatory phase via stimulation of epithelialization (days 10 and 14), and inhibition of polymorphonuclears [days 2 and 5 (71-74%)], protein leakage [days 2 and 5 (28-41%)], nitrate [days 2 and 5 (2.2-6×)] and malondialdehyde [days 2 and 5 (46-49%)]. PEp-Cf increased the number of blood vessels [days 5 and 7 (3.1-9.6×)], fibroblasts [days 5 and 7 (2.1-6.4×)] and collagen [days 5 to 14 (1.5-1.8×)]. In conclusion, the topical application of PEp-Cf at 0.1% accelerates the healing process of rat cutaneous wounds via modulation of the inflammatory and proliferative phases, being devoid of systemic alterations.
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Affiliation(s)
- Mário Rogério Lima Mota
- Department of Dental Clinic, Division of Oral Pathology and Stomatology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Alexandre Baraúna Street, 949, Fortaleza, CE, CEP 60430-170, Brazil
| | - José Ronildo Lins do Carmo Filho
- Department of Dental Clinic, Division of Oral Pathology and Stomatology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Alexandre Baraúna Street, 949, Fortaleza, CE, CEP 60430-170, Brazil
| | - Timna Varela Martins
- Higher Institute of Biomedical Sciences, State University of Ceará. Dr, Silas Munguba Avenue,1700, Fortaleza, CE, CEP 60740-903, Brazil
| | - Devany Quintela Soares
- Higher Institute of Biomedical Sciences, State University of Ceará. Dr, Silas Munguba Avenue,1700, Fortaleza, CE, CEP 60740-903, Brazil
| | - Mariana Pereira de Sousa
- Faculdade de Educação, Ciências E Letras Do Sertão Central, Universidade Estadual Do Ceará, Rua José de Queiroz 2554, Quixadá, CE, 63900-000, Brazil
| | - Paulo Goberlânio de Barros Silva
- Department of Dental Clinic, Division of Oral Pathology and Stomatology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Alexandre Baraúna Street, 949, Fortaleza, CE, CEP 60430-170, Brazil
| | - Ana Paula Negreiros Nunes Alves
- Department of Dental Clinic, Division of Oral Pathology and Stomatology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Alexandre Baraúna Street, 949, Fortaleza, CE, CEP 60430-170, Brazil
| | - Maria Gonçalves Pereira
- Higher Institute of Biomedical Sciences, State University of Ceará. Dr, Silas Munguba Avenue,1700, Fortaleza, CE, CEP 60740-903, Brazil
| | - Ana Maria Sampaio Assreuy
- Higher Institute of Biomedical Sciences, State University of Ceará. Dr, Silas Munguba Avenue,1700, Fortaleza, CE, CEP 60740-903, Brazil.
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Dantas TS, de Sousa ASA, Sales TOP, deOliveira Filho OV, de Barros Silva PG, Alves APNN, Mota MRL, Sousa FB. Outcomes of Oral and Oropharyngeal Squamous Cell Carcinoma Related to Healthcare Coverage: A Retrospective Cohort Study in Brazil. Cancer Invest 2022; 40:680-692. [PMID: 35731734 DOI: 10.1080/07357907.2022.2092634] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
We investigated the differences in prognosis according to the type of healthcare coverage of patients with oral and oropharyngeal squamous cell carcinoma (OOSCC). This study included 875 medical records. Patients covered by the publicly funded Unified Health System (SUS) had a low educational level, with advanced T stage and delayed treatment initiation. Multivariate analyses revealed an association between T stage (p = .035) and poor prognosis in oral squamous cell carcinoma, and age (p = .029) in oropharyngeal squamous cell carcinoma. Surgical treatment (p = .036) and marital status (p = .015) were considered predictors of better prognosis in OOSCC. Exclusive SUS-dependency can be considered an indirect prognostic factor for OOSCC.
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Affiliation(s)
- Thinali Sousa Dantas
- Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, Brazil.,Department of Dentistry, Unichristus, Fortaleza, Brazil
| | | | | | - Osias Vieira deOliveira Filho
- Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, Brazil
| | - Paulo Goberlânio de Barros Silva
- Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, Brazil.,Department of Dentistry, Unichristus, Fortaleza, Brazil
| | | | - Mário Rogério Lima Mota
- Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, Brazil
| | - Fabrício Bitu Sousa
- Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, Brazil.,Department of Dentistry, Unichristus, Fortaleza, Brazil
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do Nascimento IV, Rodrigues MIQ, Isaias PHC, Barros‐Silva PG, Sousa FB, Nunes Alves APN, Mota MRL. Chronic systemic corticosteroid therapy influences the development of pulp necrosis and experimental apical periodontitis, exacerbating the inflammatory process and bone resorption in rats. Int Endod J 2022; 55:646-659. [DOI: 10.1111/iej.13724] [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: 06/10/2021] [Revised: 03/06/2022] [Accepted: 03/07/2022] [Indexed: 11/29/2022]
Affiliation(s)
- Isabelly Vidal do Nascimento
- Division of Oral Pathology Department of Dental Clinic Faculty of Pharmacy, Dentistry and Nursing Federal University of Ceará (UFC) Fortaleza, Ceará Brazil
| | - Maria Imaculada Queiroz Rodrigues
- Division of Oral Pathology Department of Dental Clinic Faculty of Pharmacy, Dentistry and Nursing Federal University of Ceará (UFC) Fortaleza, Ceará Brazil
| | - Pedro Henrique Chaves Isaias
- Division of Oral Pathology Department of Dental Clinic Faculty of Pharmacy, Dentistry and Nursing Federal University of Ceará (UFC) Fortaleza, Ceará Brazil
| | - Paulo Goberlânio Barros‐Silva
- Division of Oral Pathology Department of Dental Clinic Faculty of Pharmacy, Dentistry and Nursing Federal University of Ceará (UFC) Fortaleza, Ceará Brazil
| | - Fabricio Bitu Sousa
- Division of Oral Pathology Department of Dental Clinic Faculty of Pharmacy, Dentistry and Nursing Federal University of Ceará (UFC) Fortaleza, Ceará Brazil
| | - Ana Paula Negreiros Nunes Alves
- Division of Oral Pathology Department of Dental Clinic Faculty of Pharmacy, Dentistry and Nursing Federal University of Ceará (UFC) Fortaleza, Ceará Brazil
| | - Mário Rogério Lima Mota
- Division of Oral Pathology Department of Dental Clinic Faculty of Pharmacy, Dentistry and Nursing Federal University of Ceará (UFC) Fortaleza, Ceará Brazil
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de Queiroz Rodrigues MI, de Oliveira Coelho CC, Sousa FB, Gerage LKAR, Mota MRL, Alves APNN. Polymicrobial oral conventionalization model in mice. Braz J Microbiol 2022; 53:885-890. [PMID: 35246822 PMCID: PMC9151928 DOI: 10.1007/s42770-022-00712-6] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 02/07/2022] [Indexed: 02/01/2023] Open
Abstract
The aim of this study is to describe a new polymicrobial oral conventionalization protocol in mice. Oral biofilm samples were collected from wild C57 BL/6 mice (WG), which had not been previously submitted to any experimental procedure. The contents of these samples were used for inoculation in the oral cavity of specific pathogen free (SPF) animals. This inoculation was repeated 3 times. Qualitative cytological analyses were performed in the days 0, 16 and 80 of the experimental protocol, to check the presence or absence of microorganisms, their morphology and staining characteristics on the oral cavity of the animals. At the end of this study, was observed a combination of oral bacterial microbiota of SPF animals and wild animals in the conventionalized group (CONV). Samples collected from CONV mice on day 16, a period in which these animals had been previously inoculated 3 times with wild mouse microbiota, showed a greater amount of Gram-positive cocci, as seen in SPF animals. In addition, Gram-negative cocci were present, although in a much smaller proportion than previously seen in wild mice. On the 80th experimental day, CONV animals showed a predominance of Gram-positive cocci and bacilli. Filamentous bacteria were also seen in this group. The conventionalization of SPF animals using the technique with inoculum from the resident microbiota of wild mice proved to be an effective, low-cost and easily reproducible technique. The conventionalized animals showed the colonization of a microbiota similar to wild animals up to 80 days of experiment.
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Affiliation(s)
| | | | - Fabrício Bitu Sousa
- Postgraduate Program in Dentistry, Federal University of Ceará, Fortaleza, , Ceará Brazil
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Isaias PHC, Silva PGDB, do Nascimento IV, Verde MEQL, Moreira MDS, Alves APNN, Sousa FB, Pereira KMA, Mota MRL. Effect of continuous and intermittent sodium alendronate oral dosing on post-extraction alveoli healing in rats. Arch Oral Biol 2021; 132:105291. [PMID: 34700193 DOI: 10.1016/j.archoralbio.2021.105291] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 07/03/2021] [Revised: 09/06/2021] [Accepted: 10/13/2021] [Indexed: 01/24/2023]
Abstract
OBJECTIVE This study aimed to compare alveolar healing after tooth extraction in two experimental rat models using continuous or discontinuous dosing of sodium alendronate (ALN). DESIGN Forty-eight male Wistar rats were divided into eight experimental groups (n = 6/group) and administered ALN (2.5, 5.0, or 7.5 mg/kg) by gavage, weekly, either intermittently or following a continuous regimen (2.5, 5.0, or 7.5 mg/kg) before tooth extraction. The positive control rats were administered zoledronic acid (ZA; 0.2 mg/kg, intravenous), whereas negative control rats received sterile saline (0.9% NaCl, gavage). RESULTS Only the ZA-treated animals showed a larger radiolucent extraction site area compared to the saline group (p = 0.007). Small areas of bone tissue filling the alveoli were visualized in the 7.5 mg/kg continuous ALN group and compared with the saline group (p < 0.001). Increased amounts of empty osteocyte lacunae (p < 0.001) and osteoclasts with signs of apoptosis (p = 0.004) were observed in the continuous ALN groups (2.5, 5.0, and 7.5 mg/kg) compared with the saline group. Increased immunolabeling for TNF-α was observed in the 7.5 mg/kg discontinuous ALN group and all continuous ALN groups compared with the saline group (p < 0.001). The number of tartrate-resistant acid phosphatase (TRAP)-positive osteoclasts was higher in the two continuous ALN groups (5.0 and 7.5 mg/kg) than in the saline group (p < 0.001). CONCLUSIONS Continuous administration of ALN impaired post-extraction alveolar bone healing in rats; however, discontinuation of ALN administration before tooth extraction allowed for adequate post-dental extraction alveolar healing.
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Affiliation(s)
- Pedro Henrique Chaves Isaias
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, Ceará, Brazil.
| | - Paulo Goberlânio de Barros Silva
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, Ceará, Brazil; Department of Dentistry, Unichristus, Fortaleza, Ceará, Brazil; Ceará Oncology School, Ceará Cancer Institute, Hospital Haroldo Juaçaba, Fortaleza, Ceará, Brazil.
| | - Isabelly Vidal do Nascimento
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, Ceará, Brazil; Department of Dentistry, Unichristus, Fortaleza, Ceará, Brazil.
| | - Maria Elisa Quezado Lima Verde
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, Ceará, Brazil; Department of Dentistry, Unichristus, Fortaleza, Ceará, Brazil.
| | - Manuela da Silva Moreira
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, Ceará, Brazil.
| | - Ana Paula Negreiros Nunes Alves
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, Ceará, Brazil.
| | - Fabrício Bitu Sousa
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, Ceará, Brazil; Department of Dentistry, Unichristus, Fortaleza, Ceará, Brazil.
| | - Karuza Maria Alves Pereira
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, Ceará, Brazil; Department of Morphology, School Medicine, Federal University of Ceará, Fortaleza, Ceará, Brazil.
| | - Mário Rogério Lima Mota
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, Ceará, Brazil.
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Marinho EB, Alves APNN, Pereira-Filho FJF, Ferreira-Junior AEC, Mota MRL, Sousa FB. Rare clear cell odontogenic carcinoma associated with impacted tooth in a young patient: case report and literature review. Oral Maxillofac Surg 2021; 26:491-503. [PMID: 34542774 DOI: 10.1007/s10006-021-01006-1] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 09/07/2021] [Indexed: 10/20/2022]
Abstract
Clear cell odontogenic carcinoma (CCOC) is a rare malignant odontogenic tumor. It is characterized by showing, on histopathological examination, clusters of vacuolated and clear tumor cells with epithelial differentiation surrounded by fibrocollagenous stroma and fibroblasts. The present study presents a rare clinical case of mandibular CCOC associated with an impacted tooth in a 26-year-old woman surgically treated with mandibulectomy and reconstruction with iliac crest bone graft. The patient has been followed up for 22 months without signs of recurrence. A search for case report/case series was carried out in the PUBMED database, as well as in the references of relevant previously published literature reviews. Ninety-six publications were identified, totaling 136 distinct cases reported. Female sex was the most affected (63.1%) with 63.3% of cases occurring in patients in the fifth, sixth, or seventh decades of life. The mandible was more affected than the maxilla (74.2%). Association of CCOC with impacted teeth was found in 2.4% of cases, thus rendering it a rare occurrence. The present case report corroborates the results of the survey regarding sex and anatomical location of the tumor; however, it contradicts the findings regarding age predilection. The case described is the fourth known occurrence of tooth impaction associated with the tumor and the first in a female. In conclusion, CCOC should be considered, as well as other malignancies, as a possible diagnosis of maxillary or mandibular intraosseous lesions even in unusual circumstances such as in association with impacted teeth and in young patients.
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Affiliation(s)
- Erasmo Bernardo Marinho
- Departament of Dental Clinic, Federal University of Ceara, Fortaleza, Ceará, Brazil. .,Dental Specialties Center, CEO Municipal de Caucaia, Caucaia, Ceará, Brazil.
| | | | | | | | | | - Fabricio Bitu Sousa
- Departament of Dental Clinic, Federal University of Ceara, Fortaleza, Ceará, Brazil.,School of Dentistry, Christus University Center - UNICHRISTUS, Fortaleza, Ceará, Brazil
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Fernandes Forte CP, Oliveira FAF, Lopes CDB, Alves APNN, Mota MRL, de Barros Silva PG, Montenegro RC, Campos Ribeiro Dos Santos ÂK, Lobo Filho JG, Sousa FB. Streptococcus mutans in atherosclerotic plaque: Molecular and immunohistochemical evaluations. Oral Dis 2021; 28:1705-1714. [PMID: 33825326 DOI: 10.1111/odi.13869] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 03/10/2021] [Accepted: 03/30/2021] [Indexed: 11/28/2022]
Abstract
OBJECTIVES To verify the presence of Streptococcus mutans (S. mutans) in atherosclerotic plaque (AP) using techniques with different sensitivities, correlating with histological changes in plaque and immunoexpression of inflammatory markers. MATERIALS AND METHODS Thirteen AP samples were subjected to real-time polymerase chain reaction (qRT-PCR), histopathological analyses, histochemical analysis by Giemsa staining (GS), and immunohistochemical analysis for S. mutans, IL-1β, and TNF-α (streptavidin-biotin-peroxidase method). Ten necropsy samples of healthy vessels were used as controls. RESULTS All AP samples showed histopathological characteristics of severe atherosclerosis and were positive for S. mutans (100.0%) in qRT-PCR and immunohistochemical analyses. GS showed that Streptococcus sp. colonized the lipid-rich core regions and fibrous tissue, while the control group was negative for Streptococcus sp. IL-1β and TNF-α were expressed in 100% and 92.3% of the AP tested, respectively. The control samples were positive for S. mutans in qRT-PCR analysis, but negative for S. mutans, IL-1β, and TNF-α in immunohistochemical analyses. CONCLUSION The detection of S. mutans in AP and the visualization of Streptococcus sp. suggested a possible association between S. mutans and atherosclerosis. The results obtained from the control samples suggested the presence of DNA fragments or innocuous bacteria that were not associated with tissue alteration. However, future studies are necessary to provide more information.
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Affiliation(s)
| | | | - Camile de Barros Lopes
- Department of Human and Medical Genetics, School of Biological Sciences, Federal University of Para, Belém, Brazil
| | | | - Mário Rogério Lima Mota
- Department of Stomatology and Oral Pathology, School of Dentistry, Federal University of Ceará, Fortaleza, Brazil
| | | | - Raquel Carvalho Montenegro
- Department of Human Cytogenetics, School of Biological Sciences, Federal University of Para, Belém, Brazil
| | | | | | - Fabrício Bitu Sousa
- Department of Stomatology and Oral Pathology, School of Dentistry, Federal University of Ceará, Fortaleza, Brazil
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da Silva Nascimento FG, de Souza Ferreira Bringel PH, Maia FWS, Lima CPC, Alves RC, Feitosa JPA, Mota MRL, Assreuy AMS, Castro RR. Galactomannan of Delonix regia seeds reduces nociception and morphological damage in the rat model of osteoarthritis induced by sodium monoiodoacetate. Naunyn Schmiedebergs Arch Pharmacol 2021; 394:491-501. [PMID: 33057779 DOI: 10.1007/s00210-020-01996-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 10/08/2020] [Indexed: 01/06/2023]
Abstract
This study investigated the effects of the protein-free galactomannan obtained from Delonix regia seeds (GM-DR) in an experimental osteoarthritis (OA) model. GM-DR was obtained from water-homogenized endosperms by collection of the supernatant and precipitation with ethanol. The remaining proteins in the galactomannan were removed by alkaline hydrolysis. Weight average molar mass (Mw) of the galactomannan was estimated in 5.8 × 105 g mol-1, presenting mannose:galactose ratio of 2.39:1. Rats received sodium monoiodoacetate (OA groups, 1 mg/25 μL) or saline (sham group) in the right tibio-tarsal joint. GM-DR (30-300 μg) was administered by intra-articular route at days 14 and 21 after OA induction. Hypernociception was evaluated daily by the measurement of the mechanical threshold required to cause joint flexion and paw withdrawal reflex. The 56-day animal groups were euthanized for joint histopahological analysis using the OARSI score system. Lower doses of GM-DR (30 and 100 μg) promoted antinociception from day 15 until the endpoint at day 56. Joint damage was reduced by GM-DR administration (100 μg) in OA-subjected animals, compared to the vehicle-treated OA group (5.9 ± 1.8 vs 19.0 ± 1.8, respectively, p < 0.05). Conclusion: Both antinociception and damage reduction suggest that Delonix regia galactomannan is a promising approach for osteoarthritis therapy.
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Affiliation(s)
| | | | - Francisco Wildson Silva Maia
- Superior Institute of Biomedical Sciences, State University of Ceará, Av. Dr. Silas Munguba, 1700, Fortaleza, CE, 60714-903, Brazil
| | - Carlos Pinheiro Chagas Lima
- Department of Organic and Inorganic Chemistry, Federal University of Ceará, Av. Mister Hull, s/n, Fortaleza, CE, 60451-970, Brazil
| | - Rômulo Couto Alves
- Catarinian Federal Institute of Education, Science and Technology, R. Vigário Frei João, 550, Luzerna, SC, 89609-000, Brazil
| | - Judith Pessoa Andrade Feitosa
- Department of Organic and Inorganic Chemistry, Federal University of Ceará, Av. Mister Hull, s/n, Fortaleza, CE, 60451-970, Brazil
| | - Mário Rogério Lima Mota
- Department of Dental Clinic, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Street Alexandre Baraúna, 949, Fortaleza, CE, 60430-160, Brazil
| | - Ana Maria Sampaio Assreuy
- Superior Institute of Biomedical Sciences, State University of Ceará, Av. Dr. Silas Munguba, 1700, Fortaleza, CE, 60714-903, Brazil
| | - Rondinelle Ribeiro Castro
- Superior Institute of Biomedical Sciences, State University of Ceará, Av. Dr. Silas Munguba, 1700, Fortaleza, CE, 60714-903, Brazil.
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Imaculada de Queiroz Rodrigues M, Ohana de Lima Martins J, Silva PGDB, Carlos Ferreira Júnior AE, Quezado Lima Verde ME, Sousa FB, Lima Mota MR, Negreiros Nunes Alves AP. Tocilizumab, a Potent Interleukin-6 Receptor Inhibitor, Decreases Bone Resorption and Increases the Rate of Bacterial Infection After Tooth Extraction in Rats. J Oral Maxillofac Surg 2020; 78:2138-2146. [PMID: 32919953 PMCID: PMC7428756 DOI: 10.1016/j.joms.2020.08.012] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/11/2020] [Accepted: 08/11/2020] [Indexed: 12/11/2022]
Abstract
PURPOSE Our objective was to evaluate the influence of pretreatment with tocilizumab (TCZ) in bone healing after tooth extraction in rats. METHODS Wistar male rats were equally divided into sham (ie, nonoperated), saline (both treated with 0.1 ml/kg saline), and six TCZ groups treated with 1, 2, 4, 8, 16, and 32 mg/kg TCZ (TCZ1 to TCZ32, respectively). Twenty-four hours after administration of vehicle or TCZ, exodontia of the first lower left molar was performed, and the animals were euthanized three days later for hematological analysis and organ (liver, spleen, and kidney mass indexes, and histological evaluation), gingiva (myeloperoxidase [MPO] assay), and mandible (radiographic, histomorphometric analysis, and IL-6 immunostaining) evaluation. Analysis of variance/Bonferroni test (statistical significance, P < .05) was performed using GraphPad Prism version 5.0 (GraphPad Inc, San Diego, CA, USA). RESULTS There was no difference in radiographic results; however, leukopenia (P = .039) and neutropenia (P < .001) were statistically significant in the TCZ16 and TCZ32 groups. Weight loss (P < .001) and reduced liver index (P = .001) were significantly dose-dependent; however, no histological alterations were observed in the other organs. Osteoclast counts were reduced in groups TCZ4 to TCZ32 (P < .001), and IL-6 immunostaining increased in the TCZ8 to TCZ32 groups (P < .001). Alveolar infection rates increased in groups TCZ4 to TCZ32 (P < .001), and MPO had a biphasic response, exhibiting a reduction in groups TCZ2 and TCZ4, and an increase in group TCZ32 (P = .004). CONCLUSION TCZ-induced immunosuppression led to a reduction in osteoclast function, an increase in alveolar infection, and compensatory neutrophil infiltration.
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Affiliation(s)
| | | | - Paulo Goberlânio de Barros Silva
- Professor, Laboratory of Bucodental Pathology, Federal University of Ceará, Fortaleza, Ceará, Brazil; Professor, Unichristus, Department of Dentistry, Fortaleza, Ceará, Brazil.
| | | | - Maria Elisa Quezado Lima Verde
- PhD Student, Laboratory of Bucodental Pathology, Federal University of Ceará, Fortaleza, Ceará, Brazil; PhD Student, Unichristus, Department of Dentistry, Fortaleza, Ceará, Brazil
| | - Fabrício Bitú Sousa
- Professor, Laboratory of Bucodental Pathology, Federal University of Ceará, Fortaleza, Ceará, Brazil; Professor, Unichristus, Department of Dentistry, Fortaleza, Ceará, Brazil
| | - Mário Rogério Lima Mota
- Professor, Laboratory of Bucodental Pathology, Federal University of Ceará, Fortaleza, Ceará, Brazil
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Teófilo CR, Ferreira Junior AEC, Batista AC, Fechini Jamacaru FV, Sousa FB, Lima Mota MR, Silva MFE, Barros Silva PGD, Alves APNN. Mast Cells and Blood Vessels Profile in Oral Carcinogenesis: An Immunohistochemistry Study. Asian Pac J Cancer Prev 2020; 21:1097-1102. [PMID: 32334476 PMCID: PMC7445991 DOI: 10.31557/apjcp.2020.21.4.1097] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Indexed: 01/04/2023] Open
Abstract
Background: The objectives of the present study were to evaluate angiogenesis and mast cell density in oral epithelial dysplasia and oral squamous cell carcinoma (OSCC). Materials and Methods: This was an observational, retrospective and quantitative study. The samples consisted of 60 tissue specimens from patients with squamous cell carcinoma, epithelial dysplasia and controls (n=20/group). Immunohistochemistry was performed using an anti-tryptase antibody to mast cells and anti-CD31 and anti-CD34 for blood vessels and we count the number of mast cells and determine the percentage of CD31 and CD34 antibody staining (vascular density). Results: The mast cells had lower density in OSCC compared to control and dysplasia (p = 0.009). In angiogenesis, the expression of CD31 showed a higher percentage of blood vessels in OSCC (p < 0.001), however, CD34 showed no difference between groups (p=0.092). The CD31 antibody presented as a high immunostaining in oral mucosa than CD34. Conclusions: The increased vascularity in squamous cell carcinoma suggests that angiogenesis begins when malignant transformation starts that seems to be inversely associated with the number of mast cells.
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Affiliation(s)
- Carolina Rodrigues Teófilo
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, Brazil
| | | | - Aline Carvalho Batista
- Oral Rehabilitation and Preventive Department, Dental School, Federal University of Goias, Goiana, Brazil
| | | | - Fabricio Bitu Sousa
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, Brazil
| | - Mário Rogério Lima Mota
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, Brazil
| | - Malena Freitas E Silva
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, Brazil
| | - Paulo Goberlânio De Barros Silva
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, Brazil
| | - Ana Paula Negreiros Nunes Alves
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, Brazil
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De Barros Silva PG, Leite Soares I, De Oliveira Mendes FH, Sales de Paula Campêlod C, Saldanha de Cunha MDPS, Lima Mota MR, Sousa Dantas T, Bitu Sousa F. Histórico de Consumo de Álcool como Fator Preditivo de Sobrevida em Pacientes com Carcinoma de Células Escamosas de Boca e Orofaringe: Follow-up de 15 Anos. Rev Brasileira De Cancerologia 2020. [DOI: 10.32635/2176-9745.rbc.2020v66n1.573] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Abstract
Introdução: O carcinoma de células escamosas é o tumor de maior importância na região de cabeça e pescoço, em razão da sua incidência e mortalidade. Sabe-se que fatores como consumo de álcool estão relacionados à diminuição da sobrevida de tumores tanto estimulando a progressão tumoral como causando comorbidades importantes, sendo um fator relevante para estudo. Objetivo: Avaliar a influência do histórico de álcool em características clinicoprognósticas de pacientes com carcinoma de células escamosas de boca e orofaringe (CCEBO). Método: Estudo de coorte, retrospectivo, no qual 156 prontuários de pacientes etilistas e 78 prontuários de pacientes não etilistas com CCEBO diagnosticados no Hospital Haroldo Juaçaba, em Fortaleza, Ceará, foram avaliados, entre 2000 e 2014, para análise de dados como idade, sexo, raça, localização do tumor, estadiamento TNM, tratamentos realizados e sobrevida em 15 anos por meio dos testes X², Long-Rank e modelos de regressão multinomial e de Cox (SPSS 20,0; p<0,05). Resultados: Houve maior prevalência de homens entre os pacientes etilistas (p<0,001), com tumores T3-T4 (p=0,003), linfonodos positivos (p=0,006) que realizaram tratamentos paliativos (p<0,001) e menor prevalência abaixo de 65 anos (p<0,001), quando havia histórico familiar de câncer (p=0,043). A sobrevida dos pacientes etilistas foi menor (p=0,040) e os fatores que diminuíram a sobrevida de maneira independente foram sexo masculino (p=0,042), estadiamento T3-T4 (p=0,004), metástase linfonodal (p=0,012), idade >65 anos (p=0,035) e localização na língua (p=0,042). O sexo masculino foi independentemente associado ao etilismo (p<0,001). Conclusão: O álcool é um fator de prognóstico em pacientes com CCEBO, mostrando maior prevalência em pacientes T3-T4 e, assim, influenciando negativamente no prognóstico.
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Ferreira-Junior AEC, Barros-Silva PGD, Oliveira CCD, Lima Verde MEQ, Sousa FB, Mota MRL, Lima-Júnior RCP, Alves APNN. Influence of infliximab therapy on bone healing post-dental extraction in rats. Arch Oral Biol 2020; 112:104680. [PMID: 32078944 DOI: 10.1016/j.archoralbio.2020.104680] [Citation(s) in RCA: 8] [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: 09/03/2019] [Revised: 01/06/2020] [Accepted: 01/31/2020] [Indexed: 10/25/2022]
Abstract
OBJECTIVE TNF-α, which acts directly on osteoclastogenesis, may modify bone turnover. Thus, the objective of this study was to evaluate the influence of infliximab on extraction socket healing. MATERIAL AND METHODS Eighty-four Wistar rats were randomized into two groups (infliximab EV 5 mg / kg or saline EV 1 ml / kg) and submitted to lower first molar extraction protocol. The animals were sacrificed 1, 3, 7, 14, 21 and 28 days after surgery. The jaws were subjected to radiographic, histomorphometric, histochemical (picrosirius red) and immunohistochemical (TNF-α, RANKL and OPG) analysis. RESULTS No differences were observed between the groups in surgical difficulty parameters: mass of teeth, number of root fractures and surgical time. Lower area filling with bone as well as increased amounts of remaining cicatricial tissue were observed in the infliximab group at 14 days (p < 0.001). Lower scores for polymorphonuclear neutrophils were seen at 3 (p < 0.01) and 7 days (p < 0.001), lower mononuclear counts at 7 days (p < 0.01) and lower osteoclast counts at 7 and 14 days (p < 0.01 and p < 0.001, respectively). Additionally, reduced TNF-α, RANKL and OPG immunoreactivity were observed, especially at 7 days (p < 0.05). CONCLUSION TNF-α inhibitor may alter the bone repair capacity after tooth extraction, especially in the initial repair periods, by lower expression of TNF α, RANKL and OPG. Thus, additional caution may be needed in patients who use this class of medication after dental extraction.
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Affiliation(s)
| | | | | | | | - Fabrício Bitu Sousa
- Departament of Dental Clinic - Federal University of Ceara, Fortaleza, Ceará, Brazil
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Mesquita KC, Dantas TS, de Barros Silva PG, de Queiroz Rodrigues MI, Alves APNN, Mota MRL, Sousa FB. Abatacept treatment impairs the cell migration and wound healing of oral ulcers in rats: Role of interleukin (IL)-1β, -6 and -10 and CD8/CD30 cells: Influence of abatacept treatment on oral wound healing: Experimental model on rats. Life Sci 2020; 243:117243. [PMID: 31917994 DOI: 10.1016/j.lfs.2019.117243] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 12/19/2019] [Accepted: 12/27/2019] [Indexed: 12/01/2022]
Abstract
The present study aimed to evaluate the healing process of ulcers in the jugal mucosa of Wistar rats treated with abatacept. The rats were randomly assigned to four groups: saline-treated control (0.3 mL/kg) abatacept-treated groups at dosages of 3.2, 8.0 and 20.0 mg/kg/week. After two weeks of subcutaneous (SC) administration, ulcers were introduced into the left jugal mucosa with an 8-mm diameter punch. SC administration was continued until euthanasia (after 1, 3, 7, 14 and 21 days of ulceration), and ulcers were clinically measured and animals weighed. Histological slides were evaluated (healing scores and polymorphonuclear, mononuclear, vessel, and fibroblast/myofibroblast counts). We also performed collagenesis analysis (Picrosirius Red) and immunohistochemistry (induced nitric oxide synthase (iNOS), interleukin (IL)-1beta (1β), -6, -10, plus the analysis of CD8 and CD30). The experiment was repeated to perform a vascular permeability assay. ANOVA 1-way or 2-way/Bonferroni and Kruskal-Wallis/Dunn tests were used for statistical analysis (GraphPad Prism 5.0®, p < 0.05). Abatacept treatment reduced the ulcer diameter and the numbers of polymorphonuclear and mononuclear cells; reduced the CD8+/CD30+ ratio and vascular permeability; and increased collagenesis and IL-10 expression at the beginning of the protocol. At the highest dose, there was a delay in repair and vascular proliferation; a reduction in the number of fibroblasts/myofibroblasts; and prolongation of iNOS, IL- and IL- expression. We conclude that abatacept accelerates the healing of oral ulcers by reducing the migration of inflammatory cells, but overdose of abatacept leads to delayed repair and prolongation of proinflammatory cytokine expression.
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Affiliation(s)
- Karine Cestaro Mesquita
- Division of Oral Pathology, Federal University of Ceará, Fortaleza, Ceará, Brazil; Department of Dentistry, Unichristus, Fortaleza, Ceará, Brazil
| | - Thinali Sousa Dantas
- Division of Oral Pathology, Federal University of Ceará, Fortaleza, Ceará, Brazil; Department of Dentistry, Unichristus, Fortaleza, Ceará, Brazil
| | - Paulo Goberlânio de Barros Silva
- Division of Oral Pathology, Federal University of Ceará, Fortaleza, Ceará, Brazil; Department of Dentistry, Unichristus, Fortaleza, Ceará, Brazil
| | | | | | | | - Fabrício Bitu Sousa
- Division of Oral Pathology, Federal University of Ceará, Fortaleza, Ceará, Brazil; Department of Dentistry, Unichristus, Fortaleza, Ceará, Brazil
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Dantas TS, Silva PGDB, Verde MEQL, Júnior ADLR, Cunha MDPSS, Mota MRL, Alves APNN, Leitão RFDC, Sousa FB. Role of Inflammatory Markers in Prognosis of Oral Squamous Cell Carcinoma. Asian Pac J Cancer Prev 2019; 20:3635-3642. [PMID: 31870104 PMCID: PMC7173367 DOI: 10.31557/apjcp.2019.20.12.3635] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 11/28/2019] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND This estudie evaluated the immunostaining of cytokines in oral carcinoma, in tissue of margin of surgical resecate (MSR) and metastatic lymph nodes, as well as their role in patient prognosis. METHODS A retrospective study was carried out in patients with oral squamous cell carcinomas, and sociodemographic and clinical-pathological data were evaluated. In addition, surgical site analysis of the patients was conducted by immunohistochemistry, using a tissue microarray for inflammatory (Tumor Necrosis Factor-alpha, Interleukin-1beta, Interleukin-6, interleukin-10), transcription NF-kappa B and CD68 markers. Immunoexpression was assessed qualitatively and quantitatively using ImageJ software, and data were correlated with the prognostic factors and patient survival rates. RESULTS There was a greater immunoexpression of inflammatory and CD68 cytokines in primary tumour and lymph node metastasis than in MSR. In a multinomial logistic regression model, patients with low education (p = 0.041) and a high histoscore for TNF-α (p = 0.021) showed a survival rate of 15.64 (95% CI = 1.13-217.24) and 6.81 (95% CI = 1.02-105.96). CONCLUSION Therefore, despite there is an increased immunoexpression of cytokines in the primary tumour, only TNF-α was the inflammatory cytokine that influenced the survival of patients with oral cancer.
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Oliveira FAF, Fernandes Forte CP, Silva PGDB, Lopes CDB, Montenegro RC, Dos Santos ÂKCR, Mota MRL, Sousa FB, Alves APNN. Relationship of Streptococcus mutans with valvar cardiac tissue: A molecular and immunohistochemical study. J Oral Pathol Med 2019; 48:745-753. [PMID: 31323147 DOI: 10.1111/jop.12929] [Citation(s) in RCA: 2] [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: 02/16/2019] [Revised: 06/04/2019] [Accepted: 07/04/2019] [Indexed: 11/30/2022]
Abstract
BACKGROUND The present study aimed to investigate the presence or absence of Streptococcus mutans in oral cavity and valvular samples associating with the histomorphologic alterations of calcified aortic stenosis. METHODOLOGY Dental plaque and cardiac valve samples were collected from 10 patients with calcified aortic stenosis for molecular analysis of S mutans by real-time polymerase chain reaction (PCR). Healthy valve tissue was also collected from five young cadavers and analyzed for S mutans. Moreover, fragments of all valvar specimens were submitted for histomorphological analysis and immunohistochemistry (anti-S mutans and anti-CD61). RESULTS Streptococcus mutans was present in 100% of the oral cavity samples from the patients with calcified aortic stenosis in the molecular analysis. The analysis by real-time PCR showed that S mutans presented the same proportion in healthy valves and those with calcified aortic stenosis (80%; P = 1.000). Conversely, the immunoexpression of S mutans was 37.40 (IC95% = 1.49-937.00) times superior in samples of patients with cardiac disease (P = .007). The immunoexpression analysis showed that CD61 was present in seven (70%) calcified aortic stenosis samples, all of which were also immunopositive for S mutans. CONCLUSIONS Streptococcus mutans was found in the oral cavity, healthy valve tissue, and calcified aortic stenosis samples. However, the microorganism was visualized by immunohistochemistry only in the calcified aortic stenosis samples, which may suggest viability and an increased bacterial density in this condition. The association of the presence of S mutans and positive CD61 immunoexpression suggests a probable relationship with calcified aortic stenosis.
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Affiliation(s)
- Francisco Artur Forte Oliveira
- Department of Stomatology and Oral Pathology, School of Dentistry, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | | | | | - Camile de Barros Lopes
- Laboratory of Human and Medical Genetics, Graduate Program in Genetics and Molecular Biology, Federal University of Pará, Brazil
| | - Raquel Carvalho Montenegro
- Department of Human Cytogenetics, School of Biological Sciences, Federal University of Para, Belém, Pará, Brazil
| | | | - Mário Rogério Lima Mota
- Department of Stomatology and Oral Pathology, School of Dentistry, Federal University of Ceará, Fortaleza, Ceará, Brazil.,Department of Oral Pathology, School of Dentistry, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Fabrício Bitu Sousa
- Department of Stomatology and Oral Pathology, School of Dentistry, Federal University of Ceará, Fortaleza, Ceará, Brazil.,Department of Oral Pathology, School of Dentistry, Federal University of Ceará, Fortaleza, Ceará, Brazil
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Pinheiro Ferreira TA, Marinho Bezerra TM, Chaves FN, De Sousa Lopes MCM, Lima Mota MR, Nunes Alves APN, Alves Pereira KM. Immunoexpression of Hypoxia-Inducible Factor-1 (HIF-1) in Radicular and Dentigerous Cysts. Oral Surg Oral Med Oral Pathol Oral Radiol 2018. [DOI: 10.1016/j.oooo.2018.02.690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Rodrigues CM, Chaves FN, Da Silva Sampieri MB, Marinho Bezerra TM, Lima Mota MR, Nunes Alves APN, Alves Pereira KM. Desmoplastic Fibroblastoma in the Cavity Oral: Report of a Rare Case. Oral Surg Oral Med Oral Pathol Oral Radiol 2018. [DOI: 10.1016/j.oooo.2018.02.385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Lima Verde MEQ, Rodrigues Teófilo C, Forte Oliveira FA, Maia Nogueira RL, Sousa FB, Lima Mota MR, Nunes Alves APN. Oral Paracoccidioidomycosis in A Patient Living in A Non-Endemic Area of Brazil: Case Report. Oral Surg Oral Med Oral Pathol Oral Radiol 2018. [DOI: 10.1016/j.oooo.2018.02.265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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da Silva APAB, Amorim RMF, de Freitas Lopes R, Mota MRL, da Silva FMA, Koolen HHF, Lima ES, Assreuy AMS, da Cunha RM. Calycophyllum spruceanum BENTH ameliorates acute inflammation in mice. J Ethnopharmacol 2018; 219:103-109. [PMID: 29567276 DOI: 10.1016/j.jep.2018.03.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 11/08/2017] [Revised: 03/16/2018] [Accepted: 03/16/2018] [Indexed: 06/08/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Calycophyllum spruceanum (Benth.) Hook. F. ex K. Schum. is widely distributed in the Amazonian region of Brazil, where it is popularly known as "mulateiro", "pau-mulato", "pau-mulato-de-várzea", "escorrega-macaco" or "pau-marfim". Preparations of C. spruceanum barks are used in the form of tea, poultice or skin patches to treat stomach diseases, skin inflammation and uterus tumors. PURPOSE OF THE STUDY To investigate in vivo the antinociceptive and anti-inflammatory activities of the hydroalcoholic extract of Calycophyllum spruceanum barks (HECSb) in order to validate its popular usage in inflammatory conditions. MATERIALS AND METHODS Chemical analysis of HECSb was performed using the UHPLC-MS system. Mice were treated per oral with HECSb (5-5000 mg/kg) and evaluated for acute toxicity (during 15 days); motor activity (Rota rod test); body weight (up to 72 h); antinociceptive activity: writhes induced by 0.8% acetic acid; paw licking induced by 2.5% formalin; paw withdrawal (von Frey test) induced by carrageenan (300 μg) or PGE2 (100 ng); anti-inflammatory (paw edema model). For histopathological analysis subplantar tissue fragments were collected 1 h after paw edema induction. RESULTS HECSb chemical analysis revealed the presence of caffeoylquinic derivatives, small organic acids, and phenolic compounds. HECSb showed antinociceptive effect, reducing the number of acetic acid-induced writhes by 72% at 120 mg/kg, paw licking (phase 2- Formalin test) by 33% at 60 mg/kg and 49% at 120 mg/kg; and paw withdrawal elicited by carrageenan (53% at 120 mg/kg) and PGE2 (120 mg/kg) at 0.5 h (48%) and 1 h (45%). HECSb (120 mg/kg) also inhibited the paw edema elicited both by carrageenan (48%) and PGE2 (92%). Histopathological analysis (leukocyte infiltration, edema, focal areas of hemorrhage, vascular congestion) of HECSb treatment at 120 mg/kg demonstrated normal morphology [median 0 (0,1)] compared to PGE2, showing severe alterations [median 3 (2,3); p = 0,0035]. HECSb did not induce acute toxicity nor altered body mass or motor coordination. CONCLUSIONS HECSb shows antinociceptive and anti-inflammatory effect in mice without inducing apparent acute toxicity.
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Affiliation(s)
- Ana Paula Azevedo Barros da Silva
- Centro de Ciências Biológicas e da Natureza, Universidade Federal do Acre, Campus Universitário, BR 364, Km 04 - Distrito industrial, CEP 69.920-900 Rio Branco, Acre, Brazil.
| | - Renata Morais Ferreira Amorim
- Instituto Superior de Ciências Biomédicas, Universidade Estadual do Ceará, Av. Dr. Silas Munguba, 1700, CEP 60740-903 Fortaleza, CE, Brazil.
| | - Roberta de Freitas Lopes
- Centro de Ciências Biológicas e da Natureza, Universidade Federal do Acre, Campus Universitário, BR 364, Km 04 - Distrito industrial, CEP 69.920-900 Rio Branco, Acre, Brazil.
| | - Mário Rogério Lima Mota
- Departamento de Farmácia, Odontologia e Enfermagem, Universidade Federal do Ceará, Rua Alexandre Baraúna 949, CEP 60430-170, Fortaleza, CE, Brazil.
| | - Felipe Moura Araújo da Silva
- Departamento de Química, Universidade Federal do Amazonas, Av. General Rodrigo Otávio, 1200, CEP 69067-005 Manaus, AM, Brazil.
| | - Hector Henrique Ferreira Koolen
- Grupo de Pesquisa em Metabolômica e Espectrometria de Massas, Universidade do Estado do Amazonas, Av. Carvalho Leal, 1777, CEP 69065-001 Manaus, AM, Brazil.
| | - Emerson Silva Lima
- Laboratório de Atividade Biológica, Faculdade de Ciências Farmacêuticas, Universidade Federal do Amazonas, Av. General Rodrigo Otávio, 1200, CEP 69067-005, Manaus, AM, Brazil.
| | - Ana Maria S Assreuy
- Instituto Superior de Ciências Biomédicas, Universidade Estadual do Ceará, Av. Dr. Silas Munguba, 1700, CEP 60740-903 Fortaleza, CE, Brazil.
| | - Renildo Moura da Cunha
- Centro de Ciências Biológicas e da Natureza, Universidade Federal do Acre, Campus Universitário, BR 364, Km 04 - Distrito industrial, CEP 69.920-900 Rio Branco, Acre, Brazil.
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Nonato DTT, Vasconcelos SMM, Mota MRL, de Barros Silva PG, Cunha AP, Ricardo NMPS, Pereira MG, Assreuy AMS, Chaves EMC. The anticonvulsant effect of a polysaccharide-rich extract from Genipa americana leaves is mediated by GABA receptor. Biomed Pharmacother 2018; 101:181-187. [PMID: 29486336 DOI: 10.1016/j.biopha.2018.02.074] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [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: 01/09/2018] [Revised: 01/31/2018] [Accepted: 02/19/2018] [Indexed: 10/18/2022] Open
Abstract
BACKGROUND This study aimed to chemically characterize a polysaccharide-rich extract (PRE) obtained from Genipa americana leaves and evaluate its neuroprotective effect in the brain morphology and oxidative markers using mice behavioral models. METHODS Dry powder (5 g) of G. americana leaves were submitted to depigmentation in methanol. PRE was obtained by extraction in NaOH and precipitation with absolute ethanol and characterized by infrared spectroscopy (FTIR) and nuclear magnetic resonance (1H and 13C NMR). Swiss mice (25-35 g) received saline (0.9% NaCl) or PRE (1-27 mg/kg) by intraperitoneal (i.p.) route, 30 min before evaluation in behavioral models (open field, elevated plus maze, sleeping time, tail suspension, forced swimming, seizures induced by pentylenetetrazole-PTZ). Animal's brain were dissected and analyzed for histological alterations and oxidative stress. RESULTS FTIR spectrum showed bands around 3417 cm-1 and 2928 cm-1, relative to the vibrational stretching of OH and CH, respectively. 1H NMR spectrum revealed signals at δ 3.85 (methoxyl groups) and δ 2.4 (acetyl) ppm. 13C NMR spectrum revealed signals at δ 108.0 and δ 61.5 ppm, corresponding to C1 and C5 of α-L-arabinofuranosyl residues. PRE presented central inhibitory effect, increasing the latency for PTZ-induced seizures by 63% (9 mg/kg) and 55% (27 mg/kg), and the latency to death by 73% (9 mg/kg) and 72% (27 mg/kg). Both effects were reversed by the association with flumazenil. CONCLUSIONS PRE, containing a heteropolysaccharide, presents antioxidant and anticonvulsant effect in the model of PTZ-induced seizures via gamma-aminobutyric acid (GABA), decreasing the number of hippocampal black neurons.
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Affiliation(s)
- Dayanne Terra Tenório Nonato
- Superior Institute of Biomedical Sciences, State University of Ceara, Av. Dr. Silas Munguba, 1700, Itaperi, 60714-903, Fortaleza, CE, Brazil.
| | - Silvânia Maria Mendes Vasconcelos
- Departament of Physiology and Pharmacology, Federal University of Ceara, Rua Coronel Nunes Valente, 1127, Rodolfo Teófilo, 607430-970, Fortaleza, CE, Brazil.
| | - Mário Rogério Lima Mota
- Department of Oral Pathology and Clinical Stomatology of Federal University of Ceara, Rua Coronel Nunes Valente, 1127, Rodolfo Teófilo, 607430-970, Fortaleza, CE, Brazil.
| | - Paulo Goberlânio de Barros Silva
- Department of Oral Pathology and Clinical Stomatology of Federal University of Ceara, Rua Coronel Nunes Valente, 1127, Rodolfo Teófilo, 607430-970, Fortaleza, CE, Brazil.
| | - Arcelina Pacheco Cunha
- Department of Organic and Inorganic Chemistry, Federal University of Ceara, Rua Humberto Monte, S/N, Campus de PICI, 60440554, Fortaleza, CE, Brazil.
| | - Nágila Maria Pontes Silva Ricardo
- Department of Organic and Inorganic Chemistry, Federal University of Ceara, Rua Humberto Monte, S/N, Campus de PICI, 60440554, Fortaleza, CE, Brazil.
| | - Maria Gonçalves Pereira
- Superior Institute of Biomedical Sciences, State University of Ceara, Av. Dr. Silas Munguba, 1700, Itaperi, 60714-903, Fortaleza, CE, Brazil; Faculty of Education Science and Letters of the Hinterland, Rua José de Queiroz Pessoa, 2554 - Planalto Universitário, 63.900-000, Quixadá, CE, Brazil.
| | - Ana Maria Sampaio Assreuy
- Superior Institute of Biomedical Sciences, State University of Ceara, Av. Dr. Silas Munguba, 1700, Itaperi, 60714-903, Fortaleza, CE, Brazil.
| | - Edna Maria Camelo Chaves
- Superior Institute of Biomedical Sciences, State University of Ceara, Av. Dr. Silas Munguba, 1700, Itaperi, 60714-903, Fortaleza, CE, Brazil.
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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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Oliveira CCD, Barros Silva PGD, Ferreira AEC, Gonçalves RP, Sousa FBD, Mota MRL, Alves APNN. Effects of dexamethasone and nimesulide on bisphosphonate-related osteonecrosis of the jaw: An experimental study. Arch Oral Biol 2017; 83:317-326. [DOI: 10.1016/j.archoralbio.2017.08.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2017] [Revised: 08/24/2017] [Accepted: 08/27/2017] [Indexed: 11/27/2022]
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de Barros Silva PG, Ferreira Junior AEC, de Oliveira CC, Brizeno LAC, Wong DVT, Lima Júnior RCP, Sousa FB, Mota MRL, Alves APNN. Chronic treatment with zoledronic acid increases inflammatory markers in periodontium of rats. J Oral Pathol Med 2017; 46:1046-1053. [PMID: 28865081 DOI: 10.1111/jop.12640] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [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: 08/29/2017] [Indexed: 11/30/2022]
Abstract
BACKGROUND Bisphosphonates (BF) rise proinflammatory markers and irreversibly bind to bone. Chronically, BF can lead to an inflammatory status and can increase the local oxidative stress in periodontium. Therefore, the objective of this study was to evaluate whether the chronic infusion of Zoledronic Acid (ZA) increases inflammatory markers in periodontium of rats. METHODS AND RESULTS Chronically, infusion therapy was performed with ZA (0.04, 0.2 or 1 mg/kg or saline) by four doses in over a 70-day period to analyze periodontium of the first right inferior molar using histologic, histochemical (toluidine blue), and immunohistochemical (CD68, tumor necrosis factor-α (TNF-α), interleukin-1beta (IL-1β), inducible nitric oxide synthase (iNOS) and nuclear factor kappa B (NF-kB)) tests. The experiment was replicated (ZA 0.2 mg/kg versus saline) for myeloperoxidase (MPO) assay and dose TNF-α, IL-1β, malondialdehyde (MDA) and glutathione (GSH) in gingiva of the same tooth. Despite there is no alteration in mast cells (P = .608) and CD68 mononuclear-positive cells (P = .351), in the periodontium of the ZA-treated group, was observed an increase in the presence of inflammatory cells (P = .001) and cytoplasmic immunostaining for TNF-α (P = .003), IL-1b (P = .004), iNOS (P = .008), and NF-kB (P = .025). Levels of MPO (P < .001), TNF-α (P = .002), IL-1β (P < .001), and GSH (P = .005) were augmented in gingiva of ZA-treated group but MDA (P = .993) levels and NF-kB nuclear staining (P = .923) were not altered. CONCLUSIONS Chronic treatment with ZA increase proinflammatory cytokines and the number of inflammatory cells in periodontium of rats and GSH are expressed probably in a compensatory manner.
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Affiliation(s)
- Paulo Goberlânio de Barros Silva
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, Brazil.,Department of Dental Clinic, Unichristus, Fortaleza, Brazil
| | | | - Camila Carvalho de Oliveira
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, Brazil
| | | | - Deysi Viviana Tenazoa Wong
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceara, Fortaleza, Brazil
| | | | - Fabrício Bitú Sousa
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, Brazil.,Department of Dental Clinic, Unichristus, Fortaleza, Brazil
| | - Mário Rogério Lima Mota
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, Brazil
| | - Ana Paula Negreiros Nunes Alves
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, Brazil
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Dantas TS, Nascimento IVD, Verde MEQL, Alves APNN, Sousa FB, Mota MRL. Multifocal oral melanoacanthoma associated with Addison’s disease and hyperthyroidism: a case report. Arch Endocrinol Metab 2017; 61:403-407. [PMID: 28658350 PMCID: PMC10118927 DOI: 10.1590/2359-3997000000273] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 02/02/2017] [Indexed: 11/22/2022]
Abstract
Oral melanoacanthoma is a mucocutaneous, pigmented, rare, benign, and probably reactive lesion. This paper reports for the first time in the literature a case of multifocal oral melanoacanthoma in a patient diagnosed with Addison's disease and concomitant Graves' disease with hyperthyroidism. The patient presented with oral pigmented lesions, which were hypothesized to be mucosal pigmentation associated with Addison's disease. Due to their unusual clinical pattern, these oral lesions were biopsied and diagnosed as oral melanoacanthoma on histopathology and immunohistochemistry for HMB-45. At the moment of this report, the patient was being treated for her systemic conditions, but the lesions had not regressed. Reactive hyperpigmentation of the skin and mucous membranes may be found in Addison's disease and hyperthyroidism. This case reinforces the hypothesis of a reactive nature for oral melanoacanthoma and highlights the need for investigation of endocrine disorders in patients with multifocal oral melanoacanthoma.
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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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Mesquita KC, Teófilo CR, Perdigão JPV, Sousa FB, Alves APNN, de Negreiros WA, Mota MRL. Dental care in patients with antiphospholipid syndrome: two case reports. Gen Dent 2017; 65:e9-e13. [PMID: 28068274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Antiphospholipid syndrome (APS) is a prothrombotic autoimmune disease that may be classified as primary or secondary. Treatment consists of oral anticoagulant, antiplatelet, and/or immunosuppressant drugs. This report describes the dental treatment of 2 women with APS and multiple dental concerns, including periodontal disease, caries, and missing teeth. The invasive dental procedures were performed in an outpatient setting with hematologic monitoring and use of local hemostatic measures. Neither interruption of anticoagulant medications nor administration of blood products was necessary. All of the procedures were performed without complications. To date, no recommendations for the dental care of patients with APS have been established, demonstrating a need to investigate the risks for bleeding and infection, among other concerns, during dental treatment of these patients.
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Amorim RMF, Pires AF, dos Santos-Nascimento T, Cavada BS, do Nascimento KS, Cajazeiras JB, Leal-Cardoso JH, Mota MRL, Assreuy AMS. The leguminous lectin of Lonchocarpus araripensis promotes antinociception via mechanisms that include neuronal inhibition of Na+ currents. Inflamm Res 2016; 65:701-8. [DOI: 10.1007/s00011-016-0951-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Revised: 04/15/2016] [Accepted: 05/02/2016] [Indexed: 11/29/2022] Open
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Oliveira BV, Barros Silva PG, Nojosa JDS, Brizeno LAC, Ferreira JM, Sousa FB, Mota MRL, Alves APNN. TNF-alpha expression, evaluation of collagen, and TUNEL of Matricaria recutita L. extract and triamcinolone on oral ulcer in diabetic rats. J Appl Oral Sci 2016; 24:278-90. [PMID: 27383710 PMCID: PMC5022216 DOI: 10.1590/1678-775720150481] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 03/05/2016] [Accepted: 03/15/2016] [Indexed: 01/07/2023] Open
Abstract
OBJECTIVE to evaluate the influence of Tumor Necrosis Factor alpha (TNF-α) and apoptosis in rats with DM treated with chamomile extract or triamcinolone. MATERIAL AND METHODS Wistar male rats (210.0±4.2 g) were divided into five groups: negative control group (NCG) without diabetes; positive control group (PCG) with DM (alloxan, 45 mg/kg); and groups treated with chamomile extract (normoglycemic= NCG group and diabetic= DCG group) and with triamcinolone (TG). Traumatic ulcers were performed on all animals that received topical triamcinolone, chamomile extract or saline 12/12 hours for ten days. RESULTS On days five and ten the animals were euthanized and the ulcers were analyzed by light microscopy, TUNEL assay, and immunohistochemically (TNF-α). The NCG (p=0.0062), PCG (p=0.0285), NCG (p=0.0041), and DCG (p<0.0001) groups were completely healed on the 10th day, however, there was no healing on the TG (p=0.5127) group. The TNF-α expression showed a significant reduction from the 5th to the 10th day in NCG (p=0.0266) and DCG (p=0.0062). In connective tissue, the TUNEL assay showed a significant reduction in the number of positive cells in NCG (p=0.0273) and CNG (p=0.0469) and in the epithelium only in CDG (p=0.0320). CONCLUSIONS Chamomile extract can optimize the healing of traumatic oral ulcers in diabetic rats through the reduction of apoptosis in the epithelium and TNF-α expression.
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Affiliation(s)
- Bruna Vasconcelos Oliveira
- - Universidade Federal do Ceará, Setor de Patologia Oral, Departamento de Odontologia Clínica, Fortaleza, CE, Brasil
| | - Paulo Goberlânio Barros Silva
- - Universidade Federal do Ceará, Setor de Patologia Oral, Departamento de Odontologia Clínica, Fortaleza, CE, Brasil
| | - Jacqueline de Santiago Nojosa
- - Universidade Federal do Ceará, Setor de Cariologia e Odontologia Restauradora, Departamento de Odontologia Restauradora, Fortaleza, CE, Brasil
| | - Luiz André Cavalcante Brizeno
- - Universidade Estadual do Ceará, Setor de Fisiologia e Farmacologia, Departamento de Ciências Biomédicas, Fortaleza, CE, Brasil
| | | | - Fabrício Bitú Sousa
- - Universidade Federal do Ceará, Setor de Patologia Oral, Departamento de Odontologia Clínica, Fortaleza, CE, Brasil
| | - Mário Rogério Lima Mota
- - Universidade Federal do Ceará, Setor de Patologia Oral, Departamento de Odontologia Clínica, Fortaleza, CE, Brasil
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Dantas TS, de Barros Silva PG, Sousa EF, da Cunha MDP, de Aguiar ASW, Costa FWG, Mota MRL, Alves APNN, Sousa FB. Influence of Educational Level, Stage, and Histological Type on Survival of Oral Cancer in a Brazilian Population: A Retrospective Study of 10 Years Observation. Medicine (Baltimore) 2016; 95:e2314. [PMID: 26817864 PMCID: PMC4998238 DOI: 10.1097/md.0000000000002314] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
The mortality rate associated with oral cancer is estimated at approximately 12,300 deaths per year, and the survival rate is only 40% to 50% for diagnosed patients and is closely related to the duration of time between disease perception and its diagnosis and treatment. Socioeconomic risk factors are determinants of the incidence and mortality related to oral cancer. We conducted a retrospective, cross-sectional study of 573 records of patients with oral cancer at Haroldo Juaçaba Hospital - Cancer Institute of Ceará from 2000 to 2009 to evaluate the influence of socioeconomic factors on survival and epidemiological behavior of this neoplasia in a Brazilian population. In this study, patients with oral cancer were males greater than 60 years of age, presented squamous cell carcinoma in the floor of mouth and were characterized by low education levels. A total of 573 lesions were found in oral cavities. Cox proportional hazards regression model showed that the histological type, tumor stage, and low degree of education significantly influenced survival. A lower patient survival rate was correlated with a more advanced stage of disease and a worse prognosis. Squamous cell carcinoma is associated with a higher mortality when compared with other histological types of malign neoplasia.
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Affiliation(s)
- Thinali Sousa Dantas
- From the Laboratory of Oral Pathology, Federal University of Ceará (TSD, PGDBS); Ceará School of Oncology, Haroldo Juaçaba Hospital (EFS, MDPDC, FBS); Division of Diplomacy Health (ASWDA); Division of Oral Radiology and Imaginology (FWGS); Laboratory of Oral Pathology (MRLM, APNNA); and Laboratory of Oral Pathology, Federal University of Ceará, Fortaleza, Ceará, Brazil (FBS)
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Oliveira FAF, Forte CPF, Silva PGDB, Lopes CB, Montenegro RC, Santos ÂKCRD, Sobrinho CRMR, Mota MRL, Sousa FB, Alves APNN. Molecular Analysis of Oral Bacteria in Heart Valve of Patients With Cardiovascular Disease by Real-Time Polymerase Chain Reaction. Medicine (Baltimore) 2015; 94:e2067. [PMID: 26632711 PMCID: PMC5058980 DOI: 10.1097/md.0000000000002067] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 10/16/2015] [Accepted: 10/23/2015] [Indexed: 11/25/2022] Open
Abstract
Structural deficiencies and functional abnormalities of heart valves represent an important cause of cardiovascular morbidity and mortality, and a number of diseases, such as aortic stenosis, have been recently associated with infectious agents. This study aimed to analyze oral bacteria in dental plaque, saliva, and cardiac valves of patients with cardiovascular disease. Samples of supragingival plaque, subgingival plaque, saliva, and cardiac valve tissue were collected from 42 patients with heart valve disease. Molecular analysis of Streptococcus mutans, Prevotella intermedia, Porphyromonas gingivalis, and Treponema denticola was performed through real-time PCR. The micro-organism most frequently detected in heart valve samples was the S. mutans (89.3%), followed by P. intermedia (19.1%), P. gingivalis (4.2%), and T. denticola (2.1%). The mean decayed, missing, filled teeth (DMFT) was 26.4 ± 6.9 (mean ± SD), and according to the highest score of periodontal disease observed for each patient, periodontal pockets > 4 mm and dental calculus were detected in 43.4% and 34.7% of patients, respectively. In conclusion, oral bacteria, especially S. mutans, were found in the cardiac valve samples of patients with a high rate of caries and gingivitis/periodontitis.
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Affiliation(s)
- Francisco Artur Forte Oliveira
- From the Department of Stomatology and Oral Pathology, School of Dentistry, Federal University of Ceara, Fortaleza, Ceará (FAFO, CPF, PGBS, MRLM, FBS); Department of Oral Pathology, School of Dentistry, Federal University of Ceara, Fortaleza, Ceará (APNNA); Department of Clinical Medicine, School of Medicine, Federal University of Ceara, Fortaleza, Ceará (CRMRS); Laboratory of Human and Medical Genetics, Institute of Biological Sciences, Federal University of Pará, Belém, Pará, Brazil (CBL, AKCRS); Human Cytogenetics Laboratory, Institute of Biological Sciences, Federal University of Pará, Belém, Pará, Brazil (RCM)
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Carneiro BGDS, Sá CDL, Mota MRL, Sousa FB, Alves APNN, Costa FWG, Soares ECS. Hybrid Odontogenic Tumor in the Posterior Maxilla: A Case Report. Oral Surg Oral Med Oral Pathol Oral Radiol 2015. [DOI: 10.1016/j.oooo.2015.02.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Costa FWG, Esses DFS, Pouchain EC, Mota MRL, Alves APNN, do Patrocínio RMDSV, Soares ECS. Oral Metastasis of A Colon Adenocarcinoma. Oral Surg Oral Med Oral Pathol Oral Radiol 2015. [DOI: 10.1016/j.oooo.2015.02.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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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 PGDB, Ferreira Junior AEC, Teófilo CR, Barbosa MC, Lima Júnior RCP, Sousa FB, Mota MRL, Ribeiro RDA, Alves APNN. Effect of different doses of zoledronic acid in establishing of bisphosphonate-related osteonecrosis. Arch Oral Biol 2015; 60:1237-45. [PMID: 26093347 DOI: 10.1016/j.archoralbio.2015.05.015] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [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: 12/30/2014] [Revised: 05/13/2015] [Accepted: 05/24/2015] [Indexed: 10/23/2022]
Abstract
OBJECTIVES To establish osteonecrosis of the jaws in rats treated with different doses of zoledronic acid (ZA). METHODS Male Wistar rats (n=6-7) received three consecutive weekly intravenous ZA infusions at doses of 0.04, 0.20 or 1.00mg/kg ZA or saline (control). Four weeks after the last administration, the animals were submitted to simple extraction of the lower left first molar. An additional dose of ZA was administered seven days later, and the animals were sacrificed 28 days after exodontia. Weight was measured and blood was collected weekly for analysis. The jaw was radiographically and microscopically examined along with the liver, spleen, kidney and stomach. RESULTS All ZA doses showed a higher radiolucent area than the control (p<0.0001), but the dose of 0.04mg/kg did not show BRONJ. Doses of 0.20 and 1.00mg/kg ZA showed histological evidence of bone necrosis (p=0.0004). Anaemia (p<0.0001, r(2)=0.8073) and leucocytosis (p<0.0001, r(2)=0.9699) are seen with an increase of lymphocytes (p<0.0001, r(2)=0.6431) and neutrophils and monocytes (p=0.0218, r(2)=0.8724) in all the animals treated with an increasing dose of ZA. Haemorrhage and ectasia were observed in the spleen (p=0.0004) and stomach (p=0.0168) in a dose-dependent manner, and the animals treated with ZA showed a lower rate of weight gain (p<0.0001). CONCLUSIONS We designed a bisphosphonate-related osteonecrosis of the jaw model that reproduces radiographic and histological parameters and mimics clinical alterations such as leucocytosis, anaemia and idiosyncratic inflammatory post infusion reactions.
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Affiliation(s)
- Paulo Goberlânio de Barros Silva
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceara, Fortaleza, Ceara, Brazil.
| | - Antonio Ernando Carlos Ferreira Junior
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceara, Fortaleza, Ceara, Brazil
| | - Carolina Rodrigues Teófilo
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceara, Fortaleza, Ceara, Brazil
| | - Maritza Cavalcante Barbosa
- Department of Clinical Analysis, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceara, Fortaleza, Ceara, Brazil
| | | | - Fabrício Bitú Sousa
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceara, Fortaleza, Ceara, Brazil
| | - Mário Rogério Lima Mota
- Department of Dental Clinic, Division of Oral Pathology, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceara, Fortaleza, Ceara, Brazil
| | | | - Ana Paula Negreiros Nunes 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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Fernandes CP, Oliveira FAF, Silva PGDB, Alves APNN, Mota MRL, Montenegro RC, Burbano RMR, Seabra AD, Lobo Filho JG, Lima DLF, Soares Filho AWE, Sousa FB. Molecular analysis of oral bacteria in dental biofilm and atherosclerotic plaques of patients with vascular disease. Int J Cardiol 2014; 174:710-2. [PMID: 24820755 DOI: 10.1016/j.ijcard.2014.04.201] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Accepted: 04/19/2014] [Indexed: 10/25/2022]
Abstract
BACKGROUND Oral bacteria have been detected in atherosclerotic plaques at a variable frequency; however, the connection between oral health and vascular and oral bacterial profiles of patients with vascular disease is not clearly established. The aim of this study was to evaluate the presence of oral bacterial DNA in the mouth and atherosclerotic plaques, in addition to assessing the patients' caries and periodontal disease history. METHODS Thirty samples of supragingival and subgingival plaque, saliva and atherosclerotic plaques of 13 patients with carotid stenosis or aortic aneurysm were evaluated, through real-time polymerase chain reaction, for the presence of Streptococcus mutans (SM), Prevotella intermedia (PI), Porphyromonas gingivalis (PG) and Treponema denticola (TD). All patients were submitted to oral examination using the DMFT (decayed, missing and filled teeth) and PSR (Periodontal Screening and Recording) indexes. Histopathological analysis of the atherosclerotic plaques was performed. RESULTS Most of the patients were edentulous (76.9%). SM, PI, PG and TD were detected in 100.0%, 92.0%, 15.3% and 30.7% of the oral samples, respectively. SM was the most prevalent targeted bacteria in atherosclerotic plaques, detected in 100% of the samples, followed by PI (7.1%). The vascular samples were negative for PG and TD. There was a statistically significant difference (p<0.05) between the presence of PG and TD in the oral cavity and vascular samples. CONCLUSION SM was found at a high frequency in oral and vascular samples, even in edentulous patients, and its presence in atherosclerotic plaques suggests the possible involvement of this bacterium in the disease progression.
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Affiliation(s)
- Clarissa Pessoa Fernandes
- Department of Stomatology and Oral Pathology, School of Dentistry, Federal University of Ceará, Fortaleza, Ceará, Brazil.
| | - Francisco Artur Forte Oliveira
- Department of Stomatology and Oral Pathology, School of Dentistry, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | | | | | - Mário Rogério Lima Mota
- Department of Stomatology and Oral Pathology, School of Dentistry, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Raquel Carvalho Montenegro
- Human Cytogenetics Laboratory, Institute of Biological Sciences, Federal University of Para, Belém, Pará, Brazil
| | | | | | | | | | | | - Fabrício Bitu Sousa
- Department of Stomatology and Oral Pathology, School of Dentistry, Federal University of Ceará, Fortaleza, Ceará, 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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Oliveira FAF, Fernandes CP, Araujo KSB, Alves APNN, Sousa FB, Mota MRL. Clinical aspects and conservative dental management of a patient with fibrodysplasia ossificans progressiva. J Contemp Dent Pract 2014; 15:122-6. [PMID: 24939277 DOI: 10.5005/jp-journals-10024-1501] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
AIM T o present the clinical findings of a patient with fibrodysplasia ossificans progressiva (FOP), highlighting peculiarities of dental treatment in patients with this condition. BACKGROUND FOP is a rare genetic disease characterized by skeletal malformations and ectopic ossifications in skeletal muscles, tendons, ligaments and aponeurosis. Exacerbation of these ossifications can be caused by dental treatment, resulting in disease progression. CASE DESCRIPTION A 26-year-old male patient with a diagnosis of FOP was referred to our service for dental treatment. The patient presented decreased mobility in peripheral joints (knees and elbows), postural disability (ankylosis of the vertebral column), lateral deviation and shortness of the hallux, as well as heterotopic ossifications on the hands and back. The implementation of conservative dental procedures, such as oral hygiene instructions and recurrent topical fluoride applications, were performed in addition to endodontic and restorative treatments. Brief dental appointments were conducted without using regional anesthesia or dental dam clamps. The dental chair was positioned at 45° to provide more comfort and to avoid exacerbating the disease. The patient has now completed 6 months of follow-up and is free of heterotopic ossifications resulting from dental treatment. CONCLUSION The dental treatment modifications implemented for the present case were sufficient to establish good oral health and to prevent the formation of heterotopic ossifications in the maxillofacial region. CLINICAL SIGNIFICANCE FOP is a rare disease dentists must familiarize themselves with to provide adequate, personalized treatment, which minimizes traumas that may exacerbate the disease.
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Affiliation(s)
| | - Clarissa Pessoa Fernandes
- Doctorate Student, Department of Stomatology and Oral Pathology Federal University of Ceara, Ceara, Brazil
| | - Kenia Samara Barbosa Araujo
- Undergraduate Dental Student,, Department of Stomatology and Oral Pathology Federal University of Ceara, Ceara, Brazil
| | | | - Fabrício Bitu Sousa
- Associate Professor, Department of Stomatology and Oral Pathology Federal University of Ceara, Ceara, Brazil
| | - Mário Rogério Lima Mota
- Associate Professor, Department of Stomatology and Oral Pathology Federal University of Ceara, Ceara, Brazil
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Oliveira FAF, Fernandes CP, Mota MRL, Sousa FB, Silva MRDFE, Teófilo CR, Patrocínio RMDSV, Costa FWG, Alves APNN. Expression of S-100, EMA, CD34 and presence of mast cells in eight oral neurofibromas, and a review of 127 cases of the literature. J Bras Patol Med Lab 2013. [DOI: 10.1590/s1676-24442013000500008] [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: 11/22/2022] Open
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Pinto NV, de Andrade NF, Martinez DST, Alves OL, Souza Filho AG, Mota MRL, Nascimento KS, Cavada BS, Assreuy AMS. Inflammatory and hyperalgesic effects of oxidized multi-walled carbon nanotubes in rats. J Nanosci Nanotechnol 2013; 13:5276-5282. [PMID: 23882754 DOI: 10.1166/jnn.2013.7546] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We evaluated local inflammatory activity of oxidized multiwalled carbon nanotubes in rat experimental models of acute inflammation (paw edema and hyperalgesia) by analyzing their toxicity in non-mesoendothelial tissues. Subcutaneous injection of the nanotubes induced paw edema, that was maximal in the first 2 h after administration at 0.1 mg/kg (43.25 +/- 3.8 AUC) and 1 mg/kg (30.1 +/- 1.8 AUC) compared to saline (18.32 +/- 02.05 AUC). The histopathological analysis showed acute inflammation characterized by vasodilatation, edema formation, neutrophil infiltrate and tissue damage. The nanotubes also elicited hyperalgesic response, seen by the increase of animal paw withdrawal that was maximal in the first 3 hours. The data obtained at the 3rd h was: 75 +/- 9.3% (0.01 mg/kg), 58 +/- 8.3% (0.1 mg/kg) and 53 +/- 6.69% (1 mg/kg) in relation with saline (28 +/- 3.5%). In conclusion, the oxidized multiwalled carbon nanotubes elicit inflammatory and hyperalgesic effects associated to severe tissue damage in rats.
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Affiliation(s)
- Nilson Vieira Pinto
- Institute of Biomedical Sciences, State University of Ceara, Av Paranjana, 1700, 60740-000 Fortaleza, CE-Brazil
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Fernandes CP, Oliveira FAF, Costa FWG, Patrocínio RMDSV, Mota MRL, Nunes Alves APN, Sousa FB. Clinical, histological, and immunohistochemical features of a mandibular metastasis from a primary cardiac angiosarcoma. Oral Surg Oral Med Oral Pathol Oral Radiol 2013; 116:e121-7. [PMID: 23510686 DOI: 10.1016/j.oooo.2012.12.017] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2012] [Revised: 12/06/2012] [Accepted: 12/24/2012] [Indexed: 10/27/2022]
Abstract
Primary cardiac angiosarcoma is an extremely rare malignant tumor. Distant metastases are common at the time of diagnosis but have never been reported in the jaw. A 45-year-old female patient with primary cardiac angiosarcoma was referred for dental care due to pain in the mandibular alveolar ridge. Oral examination revealed a red-violet lesion that was soft on palpation and had been present for 3 months. Histological analysis confirmed the diagnosis of metastatic cardiac angiosarcoma. The patient died of multiple metastases.
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Affiliation(s)
- Clarissa Pessoa Fernandes
- Department of Stomatology and Oral Pathology, School of Dentistry, Federal University of Ceará, Fortaleza, Ceará, Brazil.
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Cavalcante GM, Sousa de Paula RJ, Souza LPD, Sousa FB, Mota MRL, Alves APNN. Experimental model of traumatic ulcer in the cheek mucosa of rats. Acta Cir Bras 2012; 26:227-34. [PMID: 21537526 DOI: 10.1590/s0102-86502011000300012] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2010] [Accepted: 02/14/2011] [Indexed: 11/21/2022] Open
Abstract
PURPOSE To establish an experimental model of traumatic ulcer in rat cheek mucosa for utilization in future alternative therapy studies. METHODS A total of 60 adult male rats (250 - 300g) were used. Ulceration of the left cheek mucosa was provoked by abrasion using a nº 15 scalpel blade. The animals were observed for 10 days, during which they were weighed and their ulcers were measured. The histological characteristics were analyzed and scored according to the ulcer phase. In the statistical analysis, a value of p<0.01 was considered a statistically significant response in all cases. RESULTS During the five first days, the animals lost weight (Student t test, p<0.01). The ulcerated area receded linearly over time and was almost completely cicatrized after 10 days (ANOVA, Tendency posttest, p<0.0001). Groups on days 1, 2 and 3 days displayed similar results, but a decrease in scores were observed after the 4th day. CONCLUSION The proposed cheek mucosa ulcer model in rats can be considered an efficient, low-cost, reliable, and reproducible method.
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Leite JFM, Assreuy AMS, Mota MRL, Bringel PHDSF, e Lacerda RR, Gomes VDM, Cajazeiras JB, do Nascimento KS, Pessôa HDLF, Gadelha CADA, Delatorre P, Cavada BS, Santi-Gadelha T. Antinociceptive and anti-inflammatory effects of a lectin-like substance from Clitoria fairchildiana R. Howard seeds. Molecules 2012; 17:3277-90. [PMID: 22418929 PMCID: PMC6268884 DOI: 10.3390/molecules17033277] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2012] [Revised: 03/07/2012] [Accepted: 03/09/2012] [Indexed: 11/16/2022] Open
Abstract
Lectins are proteins that have the ability to bind specifically and reversibly to carbohydrates and glycoconjugates, without altering the structure of the glycosyl ligand. They are found in organisms such as viruses, plants and humans, and they have been shown to possess important biological activities. The objective of this study was to purify and characterize lectins in the seeds of Clitoria fairchildiana, as well as to verify their biological activities. The results indicated the presence of a lectin (CFAL) in the glutelin acid protein fraction, which agglutinated native rabbit erythrocytes. CFAL was purified by column chromatography ion-exchange, DEAE-Sephacel, which was obtained from a peak of protein retained in the matrix by applying 0.5 M NaCl using the step-wise method. Electrophoretic analysis of this lectin in SDS-PAGE indicated a two band pattern protein molecular mass of approximately 100 and 116 kDa. CFAL proved to be unspecific to all carbohydrates/glycoconjugates in common use for the sugar inhibition test. This lectin showed no significant cytotoxicity to human red blood cells. It was observed that CFAL has anti-inflammatory activity in the paw edema induced by carrageenan model, in which a 64% diminution in edema was observed. Antinociceptive effects were observed for CFAL in the abdominal writhing test (induced by acetic acid), in which increasing doses of the lectin caused reduction in the number of contortions by up to 72%. It was concluded that the purified and characterized lectin from the seeds of Clitoria fairchildiana has anti-inflammatory and antinociceptive activity, and is not cytotoxic to human erythrocytes.
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Affiliation(s)
- Joana Filomena Magalhães Leite
- Laboratory of Biologically Actives Molecules, Department of Biochemistry and Molecular Biology, Federal University of Ceará, P.O. Box 6043, CEP 60455-970 Fortaleza, Ceará, Brazil; (J.F.M.L.); (J.B.C.); (K.S.N.)
| | - Ana Maria Sampaio Assreuy
- Institute of Biomedical Sciences, State University of Ceará-Itaperi, CEP 60740-000, Fortaleza, Ceará, Brazil; (A.M.S.A.); (P.H.S.F.B.)
| | - Mário Rogério Lima Mota
- Faculty of Dentistry, Department of Pharmacy, Dentistry and Nursing, Federal University of Ceará, CEP 60430-160, Fortaleza, Ceará, Brazil; (M.R.L.M.)
| | | | - Rodrigo Rodrigues e Lacerda
- Department of Molecular Biology, Federal University of Paraíba, Campus I, CEP 58059-900, João Pessoa, Paraíba, Brazil; (R.R.L.); (V.M.G.); (H.L.F.P.); (C.A.A.G.); (P.D.)
| | - Vinícius de Morais Gomes
- Department of Molecular Biology, Federal University of Paraíba, Campus I, CEP 58059-900, João Pessoa, Paraíba, Brazil; (R.R.L.); (V.M.G.); (H.L.F.P.); (C.A.A.G.); (P.D.)
| | - João Batista Cajazeiras
- Laboratory of Biologically Actives Molecules, Department of Biochemistry and Molecular Biology, Federal University of Ceará, P.O. Box 6043, CEP 60455-970 Fortaleza, Ceará, Brazil; (J.F.M.L.); (J.B.C.); (K.S.N.)
| | - Kyria Santiago do Nascimento
- Laboratory of Biologically Actives Molecules, Department of Biochemistry and Molecular Biology, Federal University of Ceará, P.O. Box 6043, CEP 60455-970 Fortaleza, Ceará, Brazil; (J.F.M.L.); (J.B.C.); (K.S.N.)
| | - Hilzeth de Luna Freire Pessôa
- Department of Molecular Biology, Federal University of Paraíba, Campus I, CEP 58059-900, João Pessoa, Paraíba, Brazil; (R.R.L.); (V.M.G.); (H.L.F.P.); (C.A.A.G.); (P.D.)
| | - Carlos Alberto de Almeida Gadelha
- Department of Molecular Biology, Federal University of Paraíba, Campus I, CEP 58059-900, João Pessoa, Paraíba, Brazil; (R.R.L.); (V.M.G.); (H.L.F.P.); (C.A.A.G.); (P.D.)
| | - Plinio Delatorre
- Department of Molecular Biology, Federal University of Paraíba, Campus I, CEP 58059-900, João Pessoa, Paraíba, Brazil; (R.R.L.); (V.M.G.); (H.L.F.P.); (C.A.A.G.); (P.D.)
| | - Benildo Sousa Cavada
- Laboratory of Biologically Actives Molecules, Department of Biochemistry and Molecular Biology, Federal University of Ceará, P.O. Box 6043, CEP 60455-970 Fortaleza, Ceará, Brazil; (J.F.M.L.); (J.B.C.); (K.S.N.)
| | - Tatiane Santi-Gadelha
- Department of Molecular Biology, Federal University of Paraíba, Campus I, CEP 58059-900, João Pessoa, Paraíba, Brazil; (R.R.L.); (V.M.G.); (H.L.F.P.); (C.A.A.G.); (P.D.)
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Pacheco IA, Alves APNN, Mota MRL, Almeida PCD, Holanda ME, Souza EFD, Sousa FB. Clinicopathological study of patients with head and neck sarcomas. Braz J Otorhinolaryngol 2011; 77:385-90. [PMID: 21739016 PMCID: PMC9443710 DOI: 10.1590/s1808-86942011000300019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2010] [Accepted: 10/13/2010] [Indexed: 11/21/2022] Open
Abstract
Sarcomas are rare tumors, mainly stemming from the embryonic mesoderm, with a high grade of morbidity and mortality. Objective To carry out a retrospective study of head and neck sarcoma cases between 1999 and 2008 in three specialized centers in the city of Fortaleza. Materials and Methods Data collection was based on the charts of the patients in the study. For statistical analysis purposes we used the chi-square associations and the z test for proportions. Results We found records of 36 patients, and the most affected ones were adult brown males, in the age range between 20 and 59 years - mean age of 39.7. The man/woman ratio was 1.76:1. The most prevalent histological type was the rhabdomyosarcoma and their most common locations were the face and the neck. Most of the sample was made up of live patients without evidence of the disease in the last visit - 41.6% of the cases. The most common treatment modes were the combination of surgery + radiotherapy + chemotherapy and surgery + radiotherapy, with 27.8% of the cases each. Conclusion Sarcomas have a great histological variability and may have numerous locations. Since these are rare and not well-known lesions, new epidemiological studies must be carried out in order to enhance our understanding of the disease.
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