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1.
Clin Oral Investig ; 27(11): 6823-6833, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37814161

RESUMO

OBJECTIVE: The aim of this study was to compare, in adults and elderly individuals, the immunoexpression of immature and mature dendritic cells (DCs), mast cells, and blood vessels in healthy and diseased gingival tissues. MATERIALS AND METHODS: The expressions of immunohistochemical markers, including CD1a (immature dendritic cells), CD83 (mature dendritic cells), tryptase (mast cells) and CD34 (blood vessels), were analyzed in gingival biopsies from elderly (n = 27) and adult (n = 127) patients presenting health, gingivitis and periodontitis. Positive cells for each specimen and marker were counted. RESULTS: There were no differences in the immunostaining of DCs, mast cells and the amount of blood vessels among gingival biopsies with health, gingivitis and periodontitis in adult and elderly subjects (p > 0.05). Immature DCs were more frequent in tissues with gingivitis and periodontitis in elderly patients, when compared to adults (p < 0.05). Furthermore, degranulated mast cell counts were higher, whereas the number of microvessels was lower in gingivitis in the elderly, when compared to adults (p < 0.05). CONCLUSIONS: Diseased periodontal sites in the elderly present an overall significant overexpression of immature DCs and degranulated mast cells, in relation to those of adults. Furthermore, gingivitis in elderly is associated with decreased microvessel growth. These immunoinflammatory differences between elderly and adults may have implications in periodontal tissue breakdown in the late adulthood. Further studies should be performed to elucidate this hypothesis. CLINICAL RELEVANCE: Understading the relationship between aging and changes in immune cells during periodontal inflammation may lead to therapeutic targets for the future management of periodontal diseases.


Assuntos
Gengivite , Doenças Periodontais , Periodontite , Humanos , Adulto , Idoso , Mastócitos/patologia , Doenças Periodontais/patologia , Gengivite/patologia , Células Dendríticas
2.
J Oral Implantol ; 47(3): 223-229, 2021 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-32780859

RESUMO

Pathologies in peri-implant tissues are common and may disturb long-term implant supported rehabilitation. We aimed to evaluate the occurrence of such peri-implant diseases and their associated factors in this study. Peri-implantitis and mucositis were diagnosed based on clinical and radiological findings. Statistical analysis was performed with the X2 and logistic regression. Peri-implant mucositis and peri-implantitis were observed in 43.4% and 13.8% of patients with implants evaluated, respectively. Univariate analysis found associations with systemic changes (P = .016; yes), medication use (P = .010; yes), implant location (P < .0001; upper jaw), implant region (P = .008; posterior), previous augmentation procedure (P = .023; yes), time of prostheses use (P < .0001; >2 years), keratinized mucosa (P < .0001; absence); and gingival bleeding index (P = .005; >30%). In the multiple analysis, independent predictors were: >2 years of prostheses use (P < .0001; PR = 1.720), upper jaw location (P < .0001; PR = 1.421), gingival bleeding index >30% (P = .001; PR = 1.496), and use of medication (P < .0001; PR = 1.261). The frequency of peri-implant pathologies is high (approximately 57.2%) with several aspects of the occurrence being related to the patients' prosthesis. Prostheses type and the complexity of rehabilitation are worth highlighting. Factors include the location of the dental implant, gingival bleeding index, patient's use of medication(s), and the time of prostheses use.


Assuntos
Implantes Dentários , Mucosite , Peri-Implantite , Estudos Transversais , Humanos , Implantação de Prótese
3.
Eur Arch Otorhinolaryngol ; 277(5): 1473-1480, 2020 May.
Artigo em Inglês | MEDLINE | ID: mdl-32020312

RESUMO

PURPOSE: This study aimed to analyze the demographics, clinicopathological, treatment, and survival characteristics of head and neck sarcomas diagnosed in a reference center in the Brazilian Northeast. MATERIALS AND METHODS: This retrospective cohort study reviewed the clinical records of patients with head and neck sarcomas. Epidemiologic data consisted in clinical location, age, gender, histopathological diagnosis, clinical TNM staging and treatment. Outcome variables were local recurrence and survival. The statistical analyses were performed by a binary logistic regression analysis. The survival analysis was assessed through the Kaplan-Meier curve. RESULTS: Sixty-nine patients with head and neck sarcomas (male 39; female 30) were analyzed. The most common histologic subtypes were rhabdomyosarcoma, dermatofibrosarcoma, and pleomorphic sarcoma. The mean age of the patients at the time of diagnosis was 38.1 years old. A total of 31 patient died (sarcoma-related death) up to the end of the follow-up, with a mean follow-up rate of 1.63 years. A multivariate analysis revealed that anatomical site, treatment modality, histopathological diagnosis, and clinical stage of the disease were associated with specific survival, reaching statistical significance. CONCLUSION: This study demonstrates the impact of important clinical-pathological parameters on the overall prognosis of head and neck sarcomas.


Assuntos
Neoplasias de Cabeça e Pescoço , Sarcoma , Adulto , Brasil/epidemiologia , Feminino , Neoplasias de Cabeça e Pescoço/epidemiologia , Neoplasias de Cabeça e Pescoço/terapia , Humanos , Masculino , Recidiva Local de Neoplasia/epidemiologia , Prognóstico , Estudos Retrospectivos , Sarcoma/diagnóstico , Sarcoma/epidemiologia , Sarcoma/terapia
4.
Lasers Med Sci ; 33(6): 1255-1262, 2018 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-29502160

RESUMO

The aim of this study was to evaluate the efficacy of low-level laser therapy (LLLT) and alpha-lipoic acid (ALA) in the treatment of burning mouth syndrome (BMS) and secondary oral burning (SOB) by unstimulated sialometry, symptom assessment, and measurement of salivary TNF-α levels. Forty-four patients were randomized into four treatment groups: BMS/laser (n = 10), BMS/ALA (n = 5), SOB/laser (n = 15), and SOB/ALA (n = 14). The control group consisted of eight healthy female subjects. Unstimulated salivary flow was measured before and after treatment, and the collected saliva was stored at - 20 °C for the analysis of TNF-α. Symptoms were evaluated before and after treatment using a pain visual analog scale. Most patients were women (81.8%) during menopause (72.2%). LLLT and ALA were efficient in increasing salivary flow only in BMS but provided symptom relief in both conditions. TNF-α levels did not differ between patients with BMS and SOB or between those patients and the control group. No differences were observed in posttreatment TNF-α levels in either condition. The results of this study suggest that LLLT and ALA are efficient therapies in reducing burning mouth symptoms, with LLLT being more efficient than ALA.


Assuntos
Síndrome da Ardência Bucal/tratamento farmacológico , Síndrome da Ardência Bucal/radioterapia , Terapia com Luz de Baixa Intensidade , Ácido Tióctico/uso terapêutico , Terapia Combinada , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Medição da Dor , Saliva/metabolismo , Fator de Necrose Tumoral alfa/metabolismo , Escala Visual Analógica
5.
Clin Oral Investig ; 22(6): 2281-2289, 2018 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-29374327

RESUMO

OBJECTIVES: The present work is a controlled, blinded, and randomized clinical trial comparing hemostatic measures for the control of post-tooth extraction hemorrhage in patients on anticoagulation therapy with warfarin. MATERIALS AND METHODS: The sample consisted of 37 patients (37.8% male and 62.2% female) with a mean age of 45.5 years. After randomization, 20 patients were allocated to the control group (conventional hemostasis measures) and 17 to the study group (addition of local tranexamic acid). All variables that could influence the outcome were similar between the groups and no significant difference was seen (p > 0.05). RESULTS: In the assessment of immediate hemostasis, for the control group, the time to achieve cessation of bleeding was 9.1 (± 3.6) minutes. For the study group this was much lower, and this difference (6.018 / confidence interval of 95%, 4.677 to 7.359) was statistically significant (p < 0.001). In evaluating the control of intermediate hemorrhage, the use of tranexamic acid was more significantly associated with the absence of bleeding, especially in the first 24 h. CONCLUSIONS AND CLINICAL RELEVANCE: Thus, this measure of local hemostasis in topical form with gauze compression and irrigation was shown to be more effective in reducing the time to attain immediate hemostasis, and in preventing intermediate hemorrhage.


Assuntos
Anticoagulantes/administração & dosagem , Antifibrinolíticos/uso terapêutico , Hemostáticos/uso terapêutico , Hemorragia Bucal/prevenção & controle , Complicações Pós-Operatórias/prevenção & controle , Extração Dentária , Ácido Tranexâmico/uso terapêutico , Varfarina/administração & dosagem , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Resultado do Tratamento
6.
Biol Trace Elem Res ; 2024 Feb 12.
Artigo em Inglês | MEDLINE | ID: mdl-38347294

RESUMO

Magnesium and calcium are elements that have been associated with cardiometabolic risk factors related to metabolic syndrome (MetS). However, there are gaps in the knowledge regarding the impact of the calcium to magnesium (Ca/Mg) ratio in plasma. Thus, we aim to evaluate the associations between magnesium and calcium levels in plasma, and the Ca/Mg ratio in plasma with MetS components and other cardiometabolic risk factors. This cross-sectional study was carried out with 112 adults and older people, distributed into groups with (n = 60) and without MetS (n = 52). We evaluated sociodemographic, anthropometric, and biochemical data. Magnesium and calcium levels in plasma were measured by inductively coupled plasma mass spectrometry technique (ICP-MS). There was a high frequency of MetS, with no significant differences in magnesium and calcium levels and Ca/Mg ratio in plasma observed between groups. There were no associations between magnesium and MetS components or other cardiometabolic risk factors (all p > 0.05). Calcium levels were associated with total cholesterol (ß = - 0.020; p = 0.000) and high-density lipoprotein cholesterol (HDL-c) (ß = - 0.046; p = 0.005). The total cholesterol (ß = - 0.025; p = 0.000) and low-density lipoprotein cholesterol (LDL-c) (ß = 0.017; p = 0.020) were preditors of the Ca/Mg ratio. These results indicate important associations of calcium and the Ca/Mg ratio in plasma with cardiometabolic risk factors related to MetS.

7.
Int J Oral Maxillofac Implants ; 38(6): 1168-1174, 2023 Dec 12.
Artigo em Inglês | MEDLINE | ID: mdl-38085748

RESUMO

PURPOSE: To evaluate two pharmacologic antibiotic prophylaxis regimens and a control group of immunocompetent patients undergoing two-stage dental implant placement in a triple-blind randomized controlled clinical trial. MATERIALS AND METHODS: From a group of 61 immunocompetent patients, 21 were randomly allocated into group 1 (G1) without antibiotic prophylaxis (control), 20 in group 2 (G2) with preoperative antibiotic prophylaxis (1 g amoxicillin 1 hour before the procedure), and 20 in group 3 (G3) with preoperative (1 g amoxicillin) and postoperative (500 mg every 8 hours for 5 days) antibiotic prophylaxis. Pain was assessed with the visual analog scale (VAS) and by considering the number of painkillers patients used. Infection was identified via the presence of pus and fistula. Patients were evaluated after 7, 14, 30, and 120 days. Implant failure (defined as mobility upon the application of manual torque) was evaluated after 120 days during the second surgical stage. RESULTS: At the 7-day follow-up, pain intensity was less severe in the patients who had received antibiotics, with the G3 patients experiencing the least pain (P < .05). Infection was present in groups G1 (2 cases) and G3 (2 cases), but there was no statistically significant intergroup difference. Two implants failed, one in G1 and the other in G3. CONCLUSIONS: Based on the results of the present study, although the use of antibiotics reduced pain in the immediate postoperative period, it did not reduce infection rates and implant failure in immunocompetent patients.


Assuntos
Antibacterianos , Implantes Dentários , Humanos , Antibacterianos/uso terapêutico , Implantes Dentários/efeitos adversos , Falha de Restauração Dentária , Amoxicilina/uso terapêutico , Dor/tratamento farmacológico
8.
Appl Immunohistochem Mol Morphol ; 31(1): 40-46, 2023 01 01.
Artigo em Inglês | MEDLINE | ID: mdl-36315234

RESUMO

BMP-2 and Noggin are expressed in several tissues and participate in cell differentiation and proliferation during odontogenesis and tumor development. We evaluated the immunohistochemical expression of these proteins in ameloblastomas (AMs), odontogenic keratocysts (OKCs), and dentigerous cysts (DCs). The expression in AM (n.20), OKC (n.20), and DC (n.20) was evaluated by the percentage of positive cells and expression intensity, resulting in a total immunostaining score. Analysis of BMP-2 and Noggin revealed positivity in all cases. The Mann-Whitney test showed a statistically significant difference for Noggin between AM and DC and between OKC/DC. The mean DC scores were always higher than those of the other groups, regardless of the assessment method. Individual analysis of each lesion showed a positive and significant correlation between the percentage of cells positive for BMP-2 and Noggin in DC. We demonstrated the presence of BMP-2 and Noggin in AMs/OKCs/DCs. Marked expression of BMP-2 was observed in OKCs and AMs. There was also a positive correlation between BMP-2 and Noggin in DCs, suggesting a greater role of these markers in the bone formation and remodeling process since DCs are characterized by phases of bone quiescence and healing.


Assuntos
Cisto Dentígero , Humanos
9.
Oral Maxillofac Surg ; 26(4): 625-631, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-35001178

RESUMO

PURPOSE: The aim of this study was to evaluate fixation resistance in mandibular sagittal split ramus osteotomy in standardized polyurethane hemimandibles with two types of advancement (6 and 12 mm), with or without mandibular plane rotation, using a 2.0-mm plate/screw system. METHODS: Seven groups were evaluated using a vertical compressive load in the first molar region, and the applied force in Newtons was recorded in 1 mm, 5 mm, and 10 mm displacements, as well as the maximum force. RESULTS: There was a statistical intergroup difference and it was observed that increasing the advancement decreased fixation resistance with a single plate, and inserting an additional plate significantly increased osteosynthesis resistance. CONCLUSION: In the 12 mm advancements, clockwise rotation proved to be more resistant when fixed with only one plate. By contrast, counterclockwise rotation was significantly more resistant in stabilizing the mandibular sagittal ramus osteotomy when two plates were used.


Assuntos
Avanço Mandibular , Osteotomia Sagital do Ramo Mandibular , Humanos , Mandíbula/cirurgia , Placas Ósseas , Parafusos Ósseos , Fixação Interna de Fraturas
10.
Oral Maxillofac Surg ; 26(4): 587-593, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-34817714

RESUMO

Actinic cheilitis (AC) and lower lip squamous cell carcinoma (LLSCC) exhibit epithelial alterations mainly associated with chronic ultraviolet ray exposure. Currently, it is impossible to predict which AC cases will progress to LLSCC; thus, biomolecular markers have been studied. The aim of this study was to evaluate the immunoexpression of IMP-3 and KI-67 in AC and LLSCC. Forty AC and 40 LLSCC cases were submitted to peroxidase method and quantitatively analyzed, using the following scores: 0 (0% positive cells), + 1(≤ 30%), + 2 (> 30% to ≤ 60%), and + 3 (> 60%). Results were submitted to non-parametric Mann-Whitney (U) test. A p value < 0.05 was considered to indicate statistical significance. IMP-3 immunoexpression was observed in 26 AC cases, with predominance of the score 1 (35% of cases). This protein was also positive in 22 LLSCC cases, with predominance of the score 3 (37.5% of cases). Immunoexpression of KI-67 was observed in all studied cases, with predominance of the score 2 (70% of AC cases and 57.5% LLSCC cases). The association between IMP-3 and Ki-67 immunoexpression, AC dysplastic severity and LLSCC tumoral grade revealed no significant differences. The present results demonstrate that IMP-3 and Ki-67 immunoexpression are frequent in AC and in LLSCC. Moreover, these proteins could be involved in lower lip carcinogenesis process.


Assuntos
Carcinoma de Células Escamosas , Queilite , Neoplasias Labiais , Humanos , Carcinoma de Células Escamosas/diagnóstico , Queilite/diagnóstico , Antígeno Ki-67 , Lábio/patologia , Neoplasias Labiais/diagnóstico
11.
J Oral Maxillofac Res ; 13(4): e2, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36788795

RESUMO

Objectives: This pilot study evaluated the relationship between inferior alveolar nerve location through computed tomography scan and intraoperative inferior alveolar nerve entrapment after bilateral sagittal split osteotomy. Material and Methods: Overall, 20 helicoidal computed tomography scans were evaluated in patients with facial deformities who underwent to bilateral sagittal split osteotomy (BSSO). The distance from the mandibular canal to the internal surface of the buccal and lingual cortical bone, mandibular thickness, bone density and proportion of medullary and cortical bone in 3 regions were evaluated. During the intraoperative period, the segment to which the nerve remained adhered after performing BSSO was analysed, and the data correlated. Results: The distance from the mandibular canal to the buccal cortical bone showed a mean of 2.6 mm when the inferior alveolar nerve was adhered to the distal segment and mean of 0.7 mm when the nerve was adhered to the proximal segment. The thickness was 11.2 mm and 9.8 mm when the nerve was adhered the distal the proximal segments respectively. Mandibular thickness, distance from the mandibular canal to the buccal and lingual cortical were statistically related to intraoperative nerve entrapment (P < 0.05). Conclusions: Narrow jaws and the distance from the mandibular canal to buccal cortical bone less than 2 mm increases the risk of the inferior alveolar nerve entrapment in bilateral sagittal split osteotomy.

12.
Nutrients ; 14(4)2022 Feb 13.
Artigo em Inglês | MEDLINE | ID: mdl-35215438

RESUMO

Inadequate nutrient intake can lead to worse outcomes in patients with heart failure (HF). This prospective cohort study aimed to assess the prevalence of inadequate micronutrient intake and their association with prognosis in 121 adult and elderly outpatients with HF. Habitual micronutrient intake was evaluated using 24-h dietary recalls (minimum 2 and maximum 6). Participants were grouped into moderate (n = 67) and high (n = 54) micronutrient deficiency groups, according to the individual assessment of each micronutrient intake. Patients' sociodemographic, clinical, and anthropometric data and clinical outcomes (hospitalization and mortality) within 24 months were collected. Overall and event-free survival rates were calculated using Kaplan-Meier estimates, and curves were compared using the log-rank test. The death risk rate (hazard ratio (HR)) was calculated using Cox's univariate model. The rate of inadequate intake was 100% for vitamins B1 and D and above 80% for vitamins B2, B9, and E, calcium, magnesium, and copper. No differences in overall survival and event-free survival were observed between groups of HF outpatients with moderate and high micronutrient deficiencies (HR = 0.94 (CI = 0.36-2.48), p = 0.91, and HR = 1.63 (CI = 0.68-3.92), p = 0.26, respectively), as well as when the inadequacy of each micronutrient intake was evaluated alone (all p > 0.05). In conclusion, a high prevalence of inadequate micronutrient intake was observed in outpatients with HF. Inadequate micronutrient intake was not associated with hospitalization and mortality in this group of patients.


Assuntos
Insuficiência Cardíaca , Pacientes Ambulatoriais , Adulto , Idoso , Ingestão de Alimentos , Insuficiência Cardíaca/complicações , Humanos , Micronutrientes , Prognóstico , Estudos Prospectivos
13.
Braz Oral Res ; 35: e073, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34161412

RESUMO

The aim of this study was to identify tumor parenchyma cells exhibiting immunohistochemical profile of stem cells by evaluating the immunoreactivity of OCT4 and CD44 in a number of cases of salivary gland neoplasms. The sample consisted of 20 pleomorphic adenomas, 20 mucoepidermoid carcinomas, and 20 adenoid cystic carcinomas located in major and minor salivary glands. The expression of OCT4 and CD44 was evaluated by the percentage of positive cells and the intensity of expression. All studied cases showed positive expression of OCT4 and CD44 and higher values than the control groups. For OCT4, luminal and non-luminal cells were immunostained in the case of pleomorphic adenomas and adenoid cystic carcinomas. Moreover, the immunoreactivity of CD44 was particularly evident in the non-luminal cells of these lesions. In mucoepidermoid carcinomas, there was immunoreactivity for both markers in squamous and intermediate cells and absence of staining in mucous cells. For both markers, a significantly higher immunostaining was verified in neoplasms located in the major salivary glands compared with lesions in minor salivary glands (p<0.001). In the total sample and in minor salivary glands, malignant neoplasms exhibited higher immunoreactivity for OCT4 than pleomorphic adenoma. A significant moderate positive correlation (r = 0.444 and p ≤ 0.001) was found between OCT4 and CD44 immunoexpression in the total sample. The high expression of OCT4 and CD44 may indicate that these proteins play an important role in identifying tumor stem cells.


Assuntos
Adenoma Pleomorfo , Carcinoma Adenoide Cístico , Carcinoma Mucoepidermoide , Receptores de Hialuronatos/genética , Fator 3 de Transcrição de Octâmero/genética , Neoplasias das Glândulas Salivares , Humanos , Imuno-Histoquímica
14.
Braz Oral Res ; 32: e93, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30231175

RESUMO

Urokinase-type plasminogen activator (uPA) and its receptor (uPAR) act in the proteolysis of basement membrane and extracellular matrix structures, facilitating tumor invasion. The purpose of this study was to evaluate the relationship between these proteins and clinicopathological parameters in squamous cell carcinoma of the oral tongue (SCCOT). Sixty cases of SCCOT were submitted to immunohistochemistry and analyzed semiquantitatively at the invasion front and in the tumor core. The results were associated with lymph node metastasis, clinical stage, locoregional recurrence, clinical outcome and histological grade of malignancy. A higher expression of uPA was observed in cases of tumors of high-grade versus low-grade malignancy (p = 0.010). Moreover, the cases with the worst pattern of invasion presented an overexpression of uPA (p = 0.011). The presence of locoregional recurrence was associated with uPAR (p = 0.039), and the expression of both biomarkers was much higher at the invasion front than in the tumor core (p < 0.001). The results suggest uPA and uPAR are involved in the progression and aggressiveness of SCCOT, mainly at the tumor-host interface.


Assuntos
Carcinoma de Células Escamosas/química , Receptores de Ativador de Plasminogênio Tipo Uroquinase/análise , Neoplasias da Língua/química , Ativador de Plasminogênio Tipo Uroquinase/análise , Biomarcadores Tumorais/análise , Carcinoma de Células Escamosas/patologia , Feminino , Humanos , Imuno-Histoquímica , Masculino , Pessoa de Meia-Idade , Gradação de Tumores , Invasividade Neoplásica , Recidiva Local de Neoplasia/química , Recidiva Local de Neoplasia/patologia , Estadiamento de Neoplasias , Valores de Referência , Fatores de Risco , Estatísticas não Paramétricas , Neoplasias da Língua/patologia
15.
An Bras Dermatol ; 93(3): 341-346, 2018 06.
Artigo em Inglês | MEDLINE | ID: mdl-29924245

RESUMO

BACKGROUND: Recurrent aphthous ulcerations are common benign ulcerated lesions on the mouth, whose etiology is poorly understood, with controversial treatment and difficult to control in clinical practice. OBJECTIVE: To evaluate the cases of recurrent aphthous ulcerations with a focus on treatment, diagnosis and etiology. METHODS: This is a retrospective study of the cases of the Oral Diagnosis service of the Rio Grande do Norte Federal University in Natal/RN. Data such as sex, age, race, location, smoking habits, types of treatment, relapsing episodes, laboratory test results and clinical characteristics were collected. The associations between the variables were analyzed using the Pearson Chi-square test (p <0.05). RESULTS: A total of 4895 patients were seen in the service over a period of 11 years. Of these, 161 (3.3%) had complaints of oral aphthous ulcerations, of which 76 (47.2%) were diagnosed as suffering from recurrent aphthous ulcerations and 68 (42.2%) with clinical information necessary for evaluation. The tongue was the most affected anatomical region, with 27 individuals (39.7%), followed by the buccal mucosa, with 22 cases (32.3%). STUDY LIMITATIONS: Retrospective study with data from medical records. CONCLUSION: Dental surgeons, dermatologists and otorhinolaryngologists are the main responsible for the first contact with patients with this disease and should be attentive to the clinical aspects and treat each patient in an individualized way, since the therapy is palliative, its diagnosis is by exclusion and its etiology is unknown.


Assuntos
Estomatite Aftosa/diagnóstico , Estomatite Aftosa/terapia , Adulto , Brasil/epidemiologia , Deficiências Nutricionais/complicações , Diagnóstico Diferencial , Feminino , Humanos , Masculino , Prevalência , Recidiva , Estudos Retrospectivos , Fumar/efeitos adversos , Estomatite Aftosa/epidemiologia , Estomatite Aftosa/etiologia
16.
Med. oral patol. oral cir. bucal (Internet) ; 28(5): e418-e424, sept. 2023. tab, ilus
Artigo em Inglês | IBECS (Espanha) | ID: ibc-224547

RESUMO

Background: Oral squamous cell carcinoma (OSCC) has high morbidity and mortality rates while oral verrucous carcinoma (OVC), an uncommon variant of OSCC, exhibits a distinct biological behavior. CLIC4 protein plays a role in the cell cycle and apoptosis regulation and participates in the myofibroblasts transdifferentiation process, which are the main cells of the tumor stroma. This study analyzed the immunoexpression of CLIC4 and α-SMA in 20 OSCC cases and 15 OVC cases. Material and methods: A semiquantitative analysis of CLIC4 and α-SMA immunoexpression was performed in the parenchyma and stroma. Nuclear and cytoplasmic reactivity was analyzed separately for the CLIC4 immunostaining. The data were submitted to Pearson's chi-square and Spearman's correlation tests (p ≤ 0.05). Results: In the CLIC4 analysis, there was a significant difference in the immunoexpression of this protein between OSCC and OVC stroma (p < 0.001). It was observed a higher expression of α-SMA in the OSCC stroma. There was a positive and significant correlation between CLIC4 and α-SMA immunoexpression in the OVC stroma (r = 0,612; p = 0,015). Conclusions: The decrease or absence of nuclear CLIC4 immunoexpression in the neoplastic epithelial cells and the increase of its expression in the stroma may influence the difference in biological behavior between OSCC and OVC. (AU)


Assuntos
Humanos , Masculino , Feminino , Pessoa de Meia-Idade , Idoso , Idoso de 80 Anos ou mais , Carcinoma de Células Escamosas/patologia , Carcinoma Verrucoso/patologia , Neoplasias de Cabeça e Pescoço , Neoplasias Bucais/patologia , Estudos Retrospectivos , Estudos Transversais , Carcinoma de Células Escamosas de Cabeça e Pescoço , Canais de Cloreto
17.
Oral Maxillofac Surg ; 21(1): 49-54, 2017 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-27904962

RESUMO

AIM: This study aims to address and assess possible factors associated with nausea and vomiting (NV) following oral and maxillofacial surgery. MATERIAL AND METHODS: A prospective study was carried out in the period from December 2013 to January 2016 targeting all attended cases in that period. For statistical analysis, Pearson chi-square and Fisher tests were used to verify association and ANOVA and Student's t tests to test for significant difference, p was defined as ≤0.05. The sample group consisted of 207 patients with an average age of 33.56 years (±13.23), and 70.5% of subjects were male. RESULTS: Calculations based on the predictive model showed that a female patient with prior history of nausea and vomiting who used opioids and had intra-oral surgical access would have a 96% chance of experiencing a nausea and vomiting episode. Other factors like age, being overweight, anesthesia, surgery duration, and duration of hospital stay also contribute so that these aspects must be paid careful attention prior to surgery to ensure a suitably orientated treatment that will avoid disturbances caused by post-operative nausea and vomiting. CONCLUSION: The occurrence of post-operative nausea and vomiting after oral and maxillofacial surgery was found to be more higher incidence associated to female patients who used opioids, who had a prior history of NV, whose surgery involved intra-oral access, who were in the second or third decades of their lives, who have above average weight, and who have long anesthesia when undergoing surgery, resulting in a long hospital stays.


Assuntos
Procedimentos Cirúrgicos Bucais , Náusea e Vômito Pós-Operatórios/etiologia , Adulto , Comorbidade , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Fatores de Risco , Adulto Jovem
18.
Braz. oral res. (Online) ; 35: e073, 2021. tab, graf
Artigo em Inglês | LILACS, BBO - odontologia (Brasil) | ID: biblio-1278595

RESUMO

Abstract The aim of this study was to identify tumor parenchyma cells exhibiting immunohistochemical profile of stem cells by evaluating the immunoreactivity of OCT4 and CD44 in a number of cases of salivary gland neoplasms. The sample consisted of 20 pleomorphic adenomas, 20 mucoepidermoid carcinomas, and 20 adenoid cystic carcinomas located in major and minor salivary glands. The expression of OCT4 and CD44 was evaluated by the percentage of positive cells and the intensity of expression. All studied cases showed positive expression of OCT4 and CD44 and higher values than the control groups. For OCT4, luminal and non-luminal cells were immunostained in the case of pleomorphic adenomas and adenoid cystic carcinomas. Moreover, the immunoreactivity of CD44 was particularly evident in the non-luminal cells of these lesions. In mucoepidermoid carcinomas, there was immunoreactivity for both markers in squamous and intermediate cells and absence of staining in mucous cells. For both markers, a significantly higher immunostaining was verified in neoplasms located in the major salivary glands compared with lesions in minor salivary glands (p<0.001). In the total sample and in minor salivary glands, malignant neoplasms exhibited higher immunoreactivity for OCT4 than pleomorphic adenoma. A significant moderate positive correlation (r = 0.444 and p ≤ 0.001) was found between OCT4 and CD44 immunoexpression in the total sample. The high expression of OCT4 and CD44 may indicate that these proteins play an important role in identifying tumor stem cells.


Assuntos
Humanos , Neoplasias das Glândulas Salivares , Carcinoma Mucoepidermoide , Carcinoma Adenoide Cístico , Adenoma Pleomorfo , Receptores de Hialuronatos/genética , Fator 3 de Transcrição de Octâmero/economia , Imuno-Histoquímica
19.
Med. oral patol. oral cir. bucal (Internet) ; 23(2): e120-e125, mar. 2018. ilus, tab
Artigo em Inglês | IBECS (Espanha) | ID: ibc-171390

RESUMO

Background: Ameloblastoma (AMB), odontogenic keratocyst (OKC) and adenomatoid odontogenic tumor (AOT) are epithelial odontogenic lesions with diverse biologic profiles. Defects in regulation of apoptosis and cell cycle may be involved in the development and progression of those lesions, therefore we aimed to investigate the expression of Bcl-2, Bax and p53 to better understand the possible role of these proteins in AMBs, OKCs and AOTs. Material and Methods: The studied sample consisted of 20 AMBs, 20 OKCs and 20 AOTs. Immunohistochemistry technique was performed for the antibodies p53, Bcl-2 and Bax. Immunoreactivity was observed in the epithelial component and positive cells were counted in five fields (100x magnification). Statistical analysis was performed with Kruskal-Wallis and Spearman tests (p< 0.05). Results: All lesions exhibited staining for the three studied proteins. There was no statistically significant associations between the expression of proteins and the lesions, however we identified a positive correlation between the expression of p53 and Bcl-2 (r = 0.200) and a negative correlation between p53 and Bax expressions (r = -0.100). In addition, p53 and Bax were similarly expressed between AMBs and OKCs. Bcl-2 was similarly expressed in AMBs and AOTs. Conclusions: Apoptosis regulatory proteins, as well as cell cycle proteins, are differently expressed in epithelial odontogenic lesions and their expression is possibly related to the biological behavior of AMB, OKC and AOT (AU)


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Assuntos
Humanos , Masculino , Feminino , Apoptose , Odontodisplasia/diagnóstico , Proteína Supressora de Tumor p53/análise , Proteínas Proto-Oncogênicas c-bcl-2/análise , Cistos Odontogênicos/diagnóstico por imagem , Imuno-Histoquímica/métodos , Ameloblastoma/diagnóstico , Ameloblastoma/patologia
20.
Braz. oral res. (Online) ; 32: e93, 2018. tab, graf
Artigo em Inglês | LILACS | ID: biblio-952146

RESUMO

Abstract Urokinase-type plasminogen activator (uPA) and its receptor (uPAR) act in the proteolysis of basement membrane and extracellular matrix structures, facilitating tumor invasion. The purpose of this study was to evaluate the relationship between these proteins and clinicopathological parameters in squamous cell carcinoma of the oral tongue (SCCOT). Sixty cases of SCCOT were submitted to immunohistochemistry and analyzed semiquantitatively at the invasion front and in the tumor core. The results were associated with lymph node metastasis, clinical stage, locoregional recurrence, clinical outcome and histological grade of malignancy. A higher expression of uPA was observed in cases of tumors of high-grade versus low-grade malignancy (p = 0.010). Moreover, the cases with the worst pattern of invasion presented an overexpression of uPA (p = 0.011). The presence of locoregional recurrence was associated with uPAR (p = 0.039), and the expression of both biomarkers was much higher at the invasion front than in the tumor core (p < 0.001). The results suggest uPA and uPAR are involved in the progression and aggressiveness of SCCOT, mainly at the tumor-host interface.


Assuntos
Humanos , Masculino , Feminino , Neoplasias da Língua/química , Carcinoma de Células Escamosas/química , Ativador de Plasminogênio Tipo Uroquinase/análise , Receptores de Ativador de Plasminogênio Tipo Uroquinase/análise , Valores de Referência , Neoplasias da Língua/patologia , Imuno-Histoquímica , Carcinoma de Células Escamosas/patologia , Biomarcadores Tumorais/análise , Fatores de Risco , Estatísticas não Paramétricas , Gradação de Tumores , Pessoa de Meia-Idade , Invasividade Neoplásica , Recidiva Local de Neoplasia/patologia , Recidiva Local de Neoplasia/química , Estadiamento de Neoplasias
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