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1.
Braz. j. biol ; 83: e249424, 2023. graf
Article in English | MEDLINE, LILACS, VETINDEX | ID: biblio-1345538

ABSTRACT

Abstract Hypoxia is a prominent feature of head and neck cancer. However, the oxygen element characteristics of proteins and how they adapt to hypoxia microenvironments of head and neck cancer are still unknown. Human genome sequences and proteins expressed data of head and neck cancer were retrieved from pathology atlas of Human Protein Atlas project. Then compared the oxygen and carbon element contents between proteomes of head and neck cancer and normal oral mucosa-squamous epithelial cells, genome locations, pathways, and functional dissection associated with head and neck cancer were also studied. A total of 902 differentially expressed proteins were observed where the average oxygen content is higher than that of the lowly expressed proteins in head and neck cancer proteins. Further, the average oxygen content of the up regulated proteins was 2.54% higher than other. None of their coding genes were distributed on the Y chromosome. The up regulated proteins were enriched in endocytosis, apoptosis and regulation of actin cytoskeleton. The increased oxygen contents of the highly expressed and the up regulated proteins might be caused by frequent activity of cytoskeleton and adapted to the rapid growth and fast division of the head and neck cancer cells. The oxygen usage bias and key proteins may help us to understand the mechanisms behind head and neck cancer in targeted therapy, which lays a foundation for the application of stoichioproteomics in targeted therapy and provides promise for potential treatments for head and neck cancer.


Resumo A hipóxia é uma característica proeminente do câncer de cabeça e pescoço. No entanto, as características do elemento oxigênio das proteínas e como elas se adaptam aos microambientes de hipóxia do câncer de cabeça e pescoço ainda são desconhecidas. Sequências do genoma humano e dados expressos de proteínas de câncer de cabeça e pescoço foram recuperados do atlas de patologia do projeto Human Protein Atlas. Em seguida, comparou o conteúdo do elemento de oxigênio e carbono entre proteomas de câncer de cabeça e pescoço, e células epiteliais escamosas da mucosa oral normal, localizações do genoma, vias e dissecção funcional associada ao câncer de cabeça e pescoço também foram estudadas. Um total de 902 proteínas expressas diferencialmente foi observado onde o conteúdo médio de oxigênio é maior do que as proteínas expressas de forma humilde em proteínas de câncer de cabeça e pescoço. Além disso, o conteúdo médio de oxigênio das proteínas reguladas positivamente foi 2,54% maior do que das outras. Nenhum de seus genes codificadores foi distribuído no cromossomo Y. As proteínas reguladas positivamente foram enriquecidas em endocitose, apoptose e regulação do citoesqueleto de actina. O conteúdo aumentado de oxigênio das proteínas altamente expressas e reguladas pode ser causado pela atividade frequente do citoesqueleto e adaptado ao rápido crescimento e divisão das células cancerosas de cabeça e pescoço. O viés do uso de oxigênio e as proteínas-chave podem nos ajudar a entender os mecanismos por trás do câncer de cabeça e pescoço na terapia direcionada, o que estabelece uma base para a aplicação da estequioproteômica na terapia direcionada e oferece uma promessa para potenciais tratamentos para o câncer de cabeça e pescoço.


Subject(s)
Humans , Head and Neck Neoplasms/genetics , Oxygen , Carbon , Proteome/genetics , Tumor Microenvironment
2.
Rev. Odontol. Araçatuba (Online) ; 43(2): 12-15, maio-ago. 2022. ilus
Article in Portuguese | LILACS, BBO | ID: biblio-1361784

ABSTRACT

O papilomavírus humano (HPV) é a doença sexualmente transmissível mais comum em todo o mundo, mais de 150 tipos de HPV já foram identificados, sendo que 25 tipos estão associados a lesões em cavidade oral e genital. O diagnóstico e tratamento precoce das lesões por HPV são importantes para um melhor prognóstico do paciente. O presente estudo objetiva relatar o caso clínico de uma paciente com papiloma de células escamosas. Trata-se portanto de um tumor benigno, onde o tratamento consiste na remoção completa da lesão com a devida margem de segurança. Recidivas são incomuns, contudo o paciente deve manter acompanhamento odontológico periódico, e encaminhado para acompanhamento médico(AU)


Human papillomavirus (HPV) is the most common sexually transmitted disease worldwide, with more than 150 types of HPV identified. Among types, 25 of which are associated with lesions in the oral and genital cavity. Early diagnosis and treatment of HPV lesions are important for a better patient prognosis. The study aim to report the clinical case of a patient with squamous cell papilloma. It is, therefore, a benign tumor, where treatment consists of complete removal of the lesion with the necessary safety margin. Relapses are uncommon, but the patient must maintain periodic dental care and be referred for medical follow-up(AU)


Subject(s)
Humans , Female , Middle Aged , Papilloma , Papillomaviridae , Head and Neck Neoplasms , Palate, Soft/injuries , Sexually Transmitted Diseases , Dental Care
3.
Autops. Case Rep ; 12: e2021361, 2022. tab, graf
Article in English | LILACS | ID: biblio-1360149

ABSTRACT

Cervical thymic cysts are relatively rare benign cystic lesions that tend to be diagnosed clinically as branchial cysts, which usually present as painless, enlarging neck masses. They can occur anywhere along the normal path of descent of thymic primordia from the angle of the mandible to the sternal notch, with mediastinal extension observed in approximately 50% of cases. They are usually seen in the first decade of life on the left side with a male predominance. Here we report a case of a 15-year-old boy who presented to the hospital with left-sided neck swelling for about 2 months. The neck's contrast-enhanced computed tomography (CECT) revealed a large, well-defined cystic swelling in the left neck region, showing peripheral enhancement, seen from the submandibular region to the superior mediastinum extending into the retrosternal region. Direct fine needle aspiration (FNA) was done, which showed a benign lesion with inflammatory and cystic characteristics, leading to the possibility of a branchial cyst. The cyst was completely excised surgically. Histopathology showed a thymic cyst with parathyroid tissue. The presence of thymic tissue with Hassall's corpuscles is essential for the diagnosis. Knowledge of the clinical presentation, cyto-histological findings, and differential diagnosis of cystic cervical lesions in the pediatric population is important to diagnose this rare entity. Hence, though uncommon, when one comes across a cystic cervical region mass in children, a diagnosis of cervical thymic cyst should be kept in mind. Nonetheless, a definitive diagnosis depends on imaging findings as well as intraoperative findings and histopathological examination.


Subject(s)
Humans , Male , Adolescent , Head and Neck Neoplasms/pathology , Mediastinal Cyst/pathology , Tomography, X-Ray Computed , Biopsy, Fine-Needle , Diagnosis, Differential
4.
Rev. Ciênc. Plur ; 8(1): e24820, 2022. tab, graf
Article in Portuguese | LILACS, BBO | ID: biblio-1348511

ABSTRACT

Introdução:O carcinoma de células escamosas de cavidade oral e orofaringe é uma neoplasia epitelial maligna comum, respondendo pela maioria dos casos de tumores de cabeça e pescoço. Ele está relacionado a hábitos comportamentais, como tabagismo e etilismo de longa duração, e à infecção pelo Papilomavírus humano. Objetivos:Esse estudo objetivou descrever o perfil epidemiológico dos pacientes diagnosticados com essa neoplasia na Liga Mossoroense de Estudos e Combate ao Câncer. Metodologia: Foi realizado um estudo observacional com delineamento transversal a partir de dados presentes nos prontuários clínicos e laudos anatomopatológicos e no Sistema de Informações sobre Mortalidade no período entre 2006 a 2018. Os dados foram analisados a partir do Software R, utilizandoo teste de Wilcoxon-Mann-Whitney para as análises inferenciais e o método de Kaplan-Meier para análise da sobrevida. Resultados:225 prontuários foram analisados, sendo 70,22% de homens, 65,33% na faixa etária entre 46-70 anos e cor branca (51,57%). Destes, 25,78% eram tabagistas e 39,11% tabagistas e etilistas. O principal tratamento identificado foi a associação de cirurgia, quimioterapia e radioterapia. Observou-se que 49,10% dos óbitos foram em decorrência dessa neoplasia. O principal estádio patológico encontrado foi o quatro A (34,22%). Foi identificada maior sobrevida nos pacientes acima de 70 anos, cujo tratamento foi exclusivamente cirúrgico. Menor sobrevida foi identificada em indivíduos que tinham associação de hábitos (etilismo e tabagismo). Conclusões:Nossos resultados sugerem que a evolução à óbito foi o principal desfecho clínico e, isso pode estar relacionado aos hábitos comportamentais que influenciam diretamente o curso e prognóstico da doença. Ademais, destaca-se a importância do diagnóstico precoce a fim de reduzir óbitos e melhorar a qualidade de vida dos indivíduos, assim como a necessidade de implementar políticas educativas sobre os principais fatores de risco associados ao desenvolvimento dessa neoplasia (AU).


Introduction: Squamous cell carcinoma of the oral cavity and oropharynx is a common malignant epithelial neoplasm, accounting for most cases of head and neck tumors. It is related to behavioral habits, such as long-standing smoking and alcoholism, as well as to the human Papillomavirus infection. Objectives: This study aimed at describing the epidemiological profile of the patients diagnosed with this neoplasm in the Mossoró League for Studying and Combating Cancer. Methodology:An observational study with a cross-sectional design was carried out based on data present in the medical records and anatomopathological reports and in the Mortality Information System during the 2006-2018 period. The data were analyzed using the R Software, resorting to the Wilcoxon-Mann-Whitneytest for the inferential analyses and to the Kaplan-Meier method for survival analysis. Results: 225 medical records were analyzed: 70.22% belonging to men, 65.33% aged between 46 and 70 years old and white-skinned (51.57%). Of these, 25.78% were smokers and 39.11% were smokers and alcoholics. The main treatment identified was the association of surgery, chemotherapy and radiotherapy. It was observed that 49.10% of the deaths were due to this neoplasm. The main pathological stage found wasfour A(34.22%).Longer survival was identified in patients over 70 years of age, whose treatment was exclusively surgical. Shorter survival was identified in individuals who had associated habits (alcoholism and smoking). Conclusions:Our results suggest that evolution to death was the main clinical outcome; this can be related to the behavioral habits that exert a direct influence on the course and prognosis of the disease. Furthermore, the importance of early diagnosis is highlighted in order to reduce the number of deaths and improve the individuals' quality of life, as well as the need to implement educational policies on the main risk factors associated with the development of this neoplasm (AU).


Introducción: El carcinoma de células escamosas de la cavidad oral y la orofaringe es una neoplasia epitelial maligna común, que representa la mayoría de los casos de tumores de cabeza y cuello. Se relaciona con hábitos de comportamiento, como el tabaquismo y el alcoholismo, y la infección por el virus papiloma humano. Objetivos:Este estudio tuvo como objetivo describir el perfil epidemiológico de los pacientes diagnosticados con esta neoplasiaen la Liga Mossoroense de Estudios y Combate al Cáncer. Metodología: Se realizó un estudio observacional, transversal a partir de los datos presentes en las historias clínicas e informes patológicos y en el Sistema de Información de Mortalidad en el período 2006-2018. Los datos se analizaron mediante el Software R, con utilización de la Prueba de Wilcoxon-Mann-Whitney para análisis inferencial y el método de Kaplan-Meier para análisis de supervivencia. Resultados:Se analizaron 225 historias clínicas, 70,22% en hombres, 65,33% con edades entre 46-70 años y blancos (51,57%). De estos, 25,78% eran fumadores y 39,11% eran fumadores y alcohólicos. El principal tratamiento identificado fue la asociación de cirugía, quimioterapia y radioterapia. 49,10% de las muertes se debieron a esta neoplasia. El principal estadio patológico encontrado fue cuatro A (34,22%). Se identificó mayor sobrevida en pacientes mayores de 70 años, cuyo tratamiento fue exclusivamente quirúrgico. Se identificó una menor sobrevida en personas que tenían hábitos asociados. Conclusiones:Nuestros resultados sugieren que la evolución hacia la muerte fue el principal resultado clínico y esto puede estar relacionado con hábitos de comportamiento que influyen directamente en el curso y pronóstico de la enfermedad. Además, se destaca la importancia del diagnóstico precoz para reducir las muertes y mejorar la calidad de vida, así como la necesidad de implementar políticas educativas sobre los principales factores de riesgo asociados al desarrollo de esta neoplasia (AU).


Subject(s)
Humans , Health Profile , Brazil/epidemiology , Mouth Neoplasms/pathology , Carcinoma, Squamous Cell/pathology , Oropharyngeal Neoplasms/pathology , Head and Neck Neoplasms/pathology , Tobacco Use Disorder , Survival Analysis , Epidemiology , Cross-Sectional Studies , Statistics, Nonparametric , Papillomavirus Infections , Research Report , Smokers
5.
Rev. Ciênc. Plur ; 8(1): e24554, 2022. tab
Article in Portuguese | LILACS, BBO | ID: biblio-1348513

ABSTRACT

Introdução:O câncer de cabeça e pescoço é um conjunto de neoplasias que atingem o trato aero digestivo superior. Essas neoplasias apresentam sintomatologia variada, que depende da localização do tumor, gravidade e tempo de ocorrência. Objetivo:Avaliar o nível de conhecimento da população, usuária da atenção básica, acerca da prevenção e tratamento dos Cânceres de Cabeça e Pescoço.Metodologia:Trata-se de um estudo de campo transversal descritivo, em que se coletou informações acerca do conhecimento sobre cânceres de cabeça e pescoço, informações sociodemográficas, histórico familiar, características clínicas e de tratamentos. A coleta foi realizada em julho de 2019, em três Estratégias de Saúde da Família da cidade de Piripiri,Piauí. A pesquisa foi submetida e aprovadapelo Comitê de Ética em Pesquisa com o Parecer nº 3.221.522.Resultadose discussão:A maioria dos entrevistados foram mulheres solteiras com idade média de 44,4 anos e de baixa renda. Dentre os questionamentos realizados, grande parte não soube responderquestões sobre conhecimentos gerais a respeito dessas enfermidades. Outro fator importante é a baixa procura por serviços de saúde. Conclusões:Observou-se que os entrevistados apresentam desinformação a respeito da prevenção e tratamento desse grupo de cânceres, sendo necessário o fortalecimento de ações de educação popular em saúde (AU).


Introduction:Head and neck cancer is a group of neoplasms that affect the upper aerodigestive tract. These neoplasms have varied symptoms, depending on the location of the tumor, severity and time of occurrence.Objective:To assess the level of knowledge of the population, users of primary care, about the prevention and treatment of Head and Neck Cancer. Methodology:This is a descriptive cross-sectional study, in which information about knowledge about head and neck cancers, sociodemographic information, family history, clinical and treatment characteristics was collected. The collection was carried out in July 2019, in three Family Health Strategies in the city of Piripiri, Piauí. The research was submitted and approved by theResearch Ethics Committee with Opinion No. 3,221,522. Resultsand discussion:Most of the interviewees were single women with an average age of 44.4 years and low income. Among the questions asked, most of them did not know how to answer questions about general knowledge about these diseases. Another important factor is the low demand for health services. Conclusions:It was observed that the interviewees have misinformation regarding the prevention and treatment of this group of cancers, and it is necessary to strengthen popular health education actions (AU).


Introducción:El cáncer de cabeza y cuello es un grupo de neoplasias que afectan el tracto aerodigestivo superior. Estas neoplasias tienen síntomas variados, que dependen de la ubicación del tumor, la gravedad y el momento de aparición. Objetivo:Evaluar el nivel de conocimiento de la población, usuarios de la atención primaria de salud, sobre la prevención y el tratamiento del Cáncer de Cabeza y Cuello. Metodología:Se trata de un estudio descriptivo transversal, en el que se recopiló información sobre conocimientos sobre cánceres de cabeza y cuello, información sociodemográfica, antecedentes familiares, características clínicas y de tratamiento. La recolección se realizó en julio de 2019, en tres Estrategias de Salud de la Familia en la ciudad de Piripiri, Piauí. La investigación fue sometida y aprobada por el Comité de Ética en Investigación con Opinión No. 3.221.522. Resultados y discusión:La mayoría de los encuestados eran mujeres solteras con una edad promedio de 44,4 años y bajos ingresos. Entre las preguntas formuladas, la mayoría de ellos no sabía cómo responder preguntas sobre conocimientos generales sobre estas enfermedades. Otro factor importante es la baja demanda de servicios de salud. Conclusiones:Se observó que los entrevistados tienen desinformación sobre la prevención y tratamiento de este grupo de cánceres, y es necesario fortalecer las acciones de educación popular en salud (AU).


Subject(s)
Humans , Male , Female , Adolescent , Adult , Primary Health Care , Primary Prevention , Mouth Neoplasms/pathology , Oropharyngeal Neoplasms/pathology , Head and Neck Neoplasms/pathology , Brazil/epidemiology , Health Education , Epidemiology, Descriptive , Cross-Sectional Studies/methods , Surveys and Questionnaires , Disease Prevention
6.
Oncología (Ecuador) ; 31(3): 234-242, 30-diciembre-2021.
Article in Spanish | LILACS | ID: biblio-1352468

ABSTRACT

Se define carcinoma de cabeza y cuello (CCC) de primario desconocido al cuadro de adenopatía cervical en que, luego de examen físico, estudios de imágenes y panendoscopía con biopsias, no se encuentra el tumor primario pero sí la confirmación de malignidad de la adenomegalia. Son infrecuentes, por lo que estudios prospectivos que arrojen resultados estadísticamente significativos no están disponibles actualmente, y el tratamiento definitivo es aún motivo de controversia. Al ser la radioterapia un tratamiento dirigido es imprescindible definir adecuadamente los volúmenes blanco de tratamiento; es ideal el hallazgo del tumor primario, pero en muchos casos a pesar de un estudio escalonado, exhaustivo y multidisciplinar esto no se logra. Esto motiva el debate de qué regiones tratar, dosis, fraccionamiento y modalidad (exclusiva, adyuvante, en concurrencia). Hasta el momento el tratamiento de ganglios cervicales y mucosa de alto riesgo parece ser la estrategia con mejor control locorregional.


Head and neck carcinoma (HNC) of unknown primary is a clinical condition defined as a cervical adenopathy for which, after physical examination, imaging studies and panendoscopy with biopsies, the primary tumor is not found, but there is confirmed malignancy of the adenomegaly. It is infrequent, so prospective studies that yield statistically significant results are not currently available, and definitive treatment is still controversial. Since radiation therapy is a targeted treatment, it is essential to adequately define treatment target volumes; the discovery of the primary tumor is ideal, but in many cases, despite a phased, exhaustive and multidisciplinary study, this is not achieved. This motivates the debate on which regions to treat, dose, fractionation and modality (exclusive, adjuvant, concurrent). Until now, the treatment of high-risk cervical nodes and mucosa seems to be the strategy with the best locoregional control.


Subject(s)
Humans , Adult , Middle Aged , Aged , Radiotherapy , Head and Neck Neoplasms , Carcinoma, Squamous Cell , Lymphadenopathy
7.
Nursing (Säo Paulo) ; 24(278): 5882-5891, jul.-2021.
Article in Portuguese | LILACS, BDENF | ID: biblio-1343006

ABSTRACT

Objetivo: Relatar diante da história clínica deste paciente dos sinais sintomas apresentados, diagnóstico médico e tratamento, apresentar quais os cuidados de enfermagem necessários ao paciente com suspeita de neoplasia de cabeça e pescoço. Método: Trata-se de um estudo descritivo de abordagem qualitativa, do tipo relato de experiência. Para a realização do estudo foram utilizadas informações do prontuário do paciente e histórico de enfermagem. O estudo foi aprovado por Comitê de Ética. Resultado: Dentre os cuidados de enfermagem, cita-se: Realizar balanço hídrico, manter cabeceira elevada, auxiliar na alimentação, orientar sobre a doença, entre outros. Através da vivência foi possível observar a importância de cuidados específicos para o paciente, através da aplicação processo de enfermagem. Conclusão: Em vista disso concluímos que a assistência de enfermagem prestada ao paciente com câncer cabeça e pescoço são essenciais para a qualidade do cuidado e para sua efetiva recuperação. Neste sentido o enfermeiro deve se fazer presente como um profissional de referência por meio de conhecimento técnico e baseado em evidência.(AU)


Objective: To report, in view of the clinical history of this patient, of the signs and symptoms presented, medical diagnosis and treatment, to present what nursing care is necessary for the patient with suspected head and neck cancer. Method: This is a descriptive study with a qualitative approach, an experience report type. To carry out the study, information from the patient's medical record and nursing history were used. The study was approved by the Ethics Committee. Result: Among the nursing care, the following are cited: Perform water balance, keep the headboard elevated, assist in feeding, advise on the disease, among others. Through the experience it was possible to observe the importance of specific care for the patient, through the application of the nursing process. Conclusion: In view of this, we conclude that the nursing care provided to patients with head and neck cancer are essential for the quality of care and for their effective recovery. In this sense, the nurse must be present as a reference professional through technical knowledge and based on evidence.(AU)


Objetivo: Describir, a la vista de la historia clínica del paciente, signos, síntomas, diagnóstico médico y tratamiento evidenciados, presentar los cuidados de enfermería necesarios para los pacientes con sospecha de cáncer de cabeza y cuello. Método: Se trata de un estudio descriptivo con enfoque cualitativo, del tipo relato de experiencia. Para la realización del estudio se utilizó información de la historia clínica del paciente y del historial de enfermería. El estudio fue aprobado por el Comité de Ética. Resultado: Entre los cuidados de enfermería se citan los siguientes: Realizar balance hídrico, mantener elevado el cabecero, asistir en la alimentación, asesorar sobre la enfermedad, entre otros. A través de la experiencia, fue posible observar la importancia del cuidado específico para el paciente, a través de la aplicación del proceso de enfermería. Conclusión: Ante esto, se concluye que los cuidados de enfermería que se brindan a los pacientes con cáncer de cabeza y cuello son fundamentales para la calidad de la atención y para su efectiva recuperación. En este sentido, el enfermero debe estar presente como un profesional de referencia a través de conocimientos técnicos y con base en la evidencia.(AU)


Subject(s)
Humans , Male , Aged, 80 and over , Head and Neck Neoplasms , Nursing Care , Nursing Process , Risk Factors
8.
Prensa méd. argent ; 107(4): 219-230, 20210000. tab, graf
Article in Spanish | LILACS, BINACIS | ID: biblio-1359445

ABSTRACT

Antecedentes: el tratamiento del CBC con menor tasa de recurrencia es el quirúrgico. Debido a la ausencia de lesión residual en cirugía de ampliación de márgenes y la utilidad de la congelación intraoperatoria se propuso analizar la utilidad de las retomas intraoperatorias. Objetivo: analizar el impacto de las retomas intraoperatorias en los resultados oncológicos y cosméticos de los pacientes operados de CBC. Secundariamente analizar la extensión subclínica, el valor de la congelación intraoperatoria y las tácticas reconstructivas empleadas. Lugar de aplicación: Hospital de atención terciaria de tumores. Material y métodos: trabajo observacional retrospectivo. Se incluyeron 84 resecciones durante 3 años y se realizó un análisis comparativo en términos de recurrencia, defecto quirúrgico y utilización de colgajos entre tumores sin retoma vs con retoma. Resultados: no hubo diferencias significativas en cuanto a recurrencia y uso de colgajos. El promedio de defecto para los tumores retomados fue 27,8mm y para los no retomados 22,8mm, siendo la diferencia estadísticamente significativa (p=0.002). En el subgrupo de lesiones retomadas se encontró tumor residual en solo 2,9% de las mismas. Conclusiones: las retomas adicionaron en promedio 5mm de defecto por lesión sin aportar beneficios en términos de recurrencia. Un uso más conservador de las mismas podría traducirse en mejores resultados funcionales y cosméticos


Background: the lowest recurrence rates for basal cell carcinoma are achieved by surgical treatment. Low rates of residual tumour in specimens after incomplete excisions plus intraoperative frozen section accuracy are the rationale for analyzing the value of intraoperative re-excisions during basal cell carcinoma standard surgery. Objective: to analyse intraoperative oncologic and cosmetic results of re-captures in patients surgically treated of basal-cells carcinoma. Secondary to analyse subclinic extention, the value of frozen intraoperative sections and reconstructive conducts employed. Setting: tertiary care Hospital of tumours. Methods: observational retrospective study. During a 3-year period 84 tumours were resected. A comparative analysis in terms of recurrence, surgical defect and use of flaps was done between intraoperatively re-excised and not re-excised tumours. Results: there were no statistical difference regarding recurrence rate and use of flaps. Mean surgical defect for re-excised and not re-excised specimens was 27,8mm and 22,8mm respectively, being the difference statistically significant (p=0.002). Residual tumour was found in only 2,9% of re-excised specimens. Conclusions: re-excisions added on average 5mm to surgical defect per specimen and did not contribute to any benefit in terms of recurrence rates. A more conservative use of intraoperative re-excisions could improve functional and cosmetic outcomes


Subject(s)
Humans , Recurrence , Carcinoma, Basal Cell/surgery , Retrospective Studies , Cohort Studies , Reconstructive Surgical Procedures/methods , Freezing , Head and Neck Neoplasms/surgery
9.
Rev. Ciênc. Méd. Biol. (Impr.) ; 20(1): 137-143, maio 5, 2021. fig, ilus
Article in Portuguese | LILACS | ID: biblio-1355085

ABSTRACT

Introdução: o câncer de cabeça e pescoço (CCP) ocupa o 5º lugar entre as neoplasias mais prevalentes no Brasil. Por acometer regiões que estão relacionadas diretamente à alimentação, os efeitos secundários ao tratamento provoca diminuição da ingesta alimentar, que favorece perda de peso acelerada e desnutrição. A terapia nutricional (TN) contribui para a minimização desses efeitos, pois visa à manutenção ou recuperação do estado nutricional. Objetivo: avaliar o impacto da TN em pacientes com CCP com desnutrição, e na minimização dos efeitos colaterais advindos do tratamento antineoplásico. Metodologia: trata-se uma revisão sistemática, utilizando-se as bases de dados eletrônicas Lilacs, Medline, Pubmed, periódicos CAPES e Scielo, através dos descritores: "nutritional therapy", "head and neck neoplasms" e "malnutrition". Os critérios de inclusão estabelecidos foram ensaios clínicos randomizados, escritos em inglês e publicados entre os anos de 2013 e 2018; participantes dos estudos deveriam apresentar idade superior a 19 anos e submetidos a qualquer tipo e fase de tratamento oncológico. Resultados: observou-se um total de 755 indivíduos com CCP que participaram dos seis ensaios clínicos selecionados. Os estudos avaliaram o impacto nutricional no uso de suplementos alimentares e na eficácia da terapia enteral. Destes, apenas quatro constataram diferença em relação a intervenção nutricional (p<0,05) e dois não relataram resultados significativos (p>0,05). O acompanhamento nutricional mostra-se necessário para reduzir os riscos de piora do estado nutricional e da qualidade de vida. Conclusão: a TN oral ou enteral podem ser implementadas, para garantir a melhora da condição nutricional e de saúde do paciente com CCP.


Introduction: head and neck cancer (HNC) ranks 5th among the most prevalent cancers in Brazil. By affecting regions that are directly related to food, the side effects of treatment may cause decreased food intak with weight loss and malnutrition. Nutritional therapy (NT) contributes to minimization this, as it aims to maintain or recover nutritional status. Aim: evaluate the impact of nutritional therapy in patients with HNC with malnutrition, and minimizing side effects from antineoplastic treatment. Methodology ­ A systematic review was carried out using Lilacs, Medline, Pubmed, periodicals CAPES and Scielo, through the descriptors: "nutritional therapy", "head and neck neoplasms" and "malnutrition". The inclusion criteria were randomized clinical trials, in English and published between 2013 and 2018. Participants in the studies should be over the age of 19 years, submitted to any type and stage of cancer treatment. Results: a total of 755 individuals with CCP who participated in the six selected clinical trials were observed. The studies evaluated the nutritional impact of dietary supplement use and the efficacy of enteral therapy. Of these, only four found a difference in relation to nutritional intervention (p <0.05) and two did not report significant results (p> 0.05). Depending on staging of the disease, only nutritional counseling is not enough to prevent weight loss. Nutritional monitoring is necessary to reduce the risks of worsening nutritional status and quality of life. Conclusions: oral or enteral NT can be implemented to ensure the improvement of the nutritional and health condition of the patient with CCP.


Subject(s)
Humans , Male , Female , Malnutrition , Nutrition Therapy , Head and Neck Neoplasms , Review , Database
10.
Curitiba; s.n; 20210212. 123 p. ilus, tab, graf.
Thesis in Portuguese | LILACS, BDENF | ID: biblio-1282615

ABSTRACT

Resumo: O objetivo deste trabalho foi avaliar a esperança e a depressão maior em pacientes com câncer de cabeça e pescoço em tratamento quimioterápico e/ou radioterápico. Trata-se de um estudo de natureza quantitativa, do tipo observacional e analítico, vinculado a um projeto maior denominado: construindo processos de cuidado na interface do cuidar em situações de enfermidade grave, da linha de pesquisa de Processo de Cuidar em Saúde e Enfermagem, conduzido no ambulatório do Serviço de Cabeça e Pescoço, de um hospital oncológico situado na cidade de Curitiba, Paraná, Brasil. A amostra por conveniência foi composta por 60 pacientes com câncer de cabeça e pescoço em tratamento quimioterápico e/ou radioterápico. A coleta de dados ocorreu entre maio e setembro de 2020, com a aplicação de questionário sociodemográfico e clínico elaborado pela autora, Patient Health Questionnaire-9, para avaliar a depressão maior e a Escala de Esperança de Hert. Utilizou-se para analisar os dados a estatística descritiva, teste não paramétrico de Mann-Whitney, Kruskal-Wallis e a Correlação de Spearman. Os resultados mostraram que 61,7% dos pacientes eram do sexo masculino, com idade variando de 34 a 80 anos; diagnóstico de câncer localizado na cavidade oral (53,3%), laringe (33,3%), orofaringe (5,0%) orofaringe e nasofaringe (8,3%); 28,3% relataram ter histórico de depressão. Na análise de correlação dos escores do Patient Health Questionnaire-9 com o sexo, obteve-se média de 7,7±6,2 com nível maior de depressão nas mulheres do que nos homens. A média do escore de esperança no sexo masculino foi de 41,6±2,4 e no sexo feminino 40,8±4,0, não apresentando significância estatística nesta correlação (p=0,662). Entretanto, durante a pandemia, 35% (n=21) dos participantes manifestaram sentimentos de angústia, ansiedade e medo, sendo este último predominante; ao associar o escore do Patient Health Questionnaire-9 com estes sentimentos, obteve-se média de 8,2±6,2 (p= 0,123). Houve significância estatística entre esperança e o número de filhos (p=0,034), verificou-se que os participantes com três filhos ou mais, obtiveram maior escore de esperança. Na associação das variáveis escolaridade com o escore do Patient Health Questionnaire-9, observou-se que a maior depressão estava presente nos participantes com maior nível de escolaridade, obtendo o valor de significância de p= 0,019. Conclui-se que a utilização de ferramentas que mensurem os níveis de esperança do paciente em tratamento quimioterápico e/ou radioterápico, fornecem as profissionais de saúde suporte para a implementação de ações direcionadas para o enfrentamento da doença e minimização de sintomas depressivos dessa população.


Abstract: The objective of this study was to evaluate hope and major depression in patients with head and neck cancer undergoing chemotherapy and/or radiation therapy. This is a quantitative, observational and analytical study, linked to a larger project called: building care processes at the interface of care in situations of serious illness, from the research line of the Care Process in Health and Nursing, conducted at the Head and Neck Service outpatient clinic of an oncology hospital located in the city of Curitiba, Paraná, Brazil. The convenience sample consisted of 60 patients with head and neck cancer undergoing chemotherapy and / or radiotherapy. Data collection took place between May and September 2020, with the application of a sociodemographic and clinical questionnaire prepared by the author, Patient Health Questionnaire-9, to assess major depression and the Hert Hope Scale. Descriptive statistics, non-parametric Mann-Whitney test, Kruskal-Wallis and Spearman's correlation were used to analyze the data. The results showed that 61.7% of the patients were male, with ages varying from 34 to 80 years old; diagnosis of cancer located in the oral cavity (53.3%), larynx (33.3%), oropharynx (5.0%) oropharynx and nasopharynx (8.3%); 28.3% reported having a history of depression. In the correlation analysis of the Patient Health Questionnaire-9 scores with sex, an average of 7.7 ± 6.2 was obtained with a higher level of depression in women than in men. The average hope score in males was 41.6 ± 2.4 and in females 40.8 ± 4.0, with no statistical significance in this correlation (p = 0.662). However, during the pandemic, 35% (n = 21) of the participants expressed feelings of anguish, anxiety and fear, being fear one of the predominant feelings expressed when associating the score of the patient health questionnaire-9; Obtaining an average of 8.2 + 6.2 (p= 0.123). There was statistical significance between hope and the number of children (p = 0.034), it was found that the participants with three children or more, obtained a higher hope score. In the association of the education variables with the score of the Patient Health Questionnaire-9,it was observed that larger sings of depresion were found in the participants with a higher level of education, obtaining the significant value of p = 0.019. It is concluded that the use of tools that measure the patient's hope levels in chemotherapy and / or radiotherapy treatment, provide health professionals with support for the implementation of actions aimed at coping with the disease and minimizing depressive symptoms in this population.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Aged, 80 and over , Patients , Coronavirus Infections , Depression , Drug Therapy , Hope , Head and Neck Neoplasms
11.
Arch. argent. pediatr ; 119(1): e36-e40, feb. 2021. ilus
Article in English, Spanish | LILACS, BINACIS | ID: biblio-1147255

ABSTRACT

El hemangioma fusocelular es una neoplasia vascular benigna infrecuente. Afecta la dermis y la hipodermis de la parte distal de las extremidades; la afectación de la cabeza y el cuello es muy poco frecuente y nunca se informó compromiso de los senos paranasales. Este es el caso de un lactante de 4 meses con obstrucción nasal desde las 2 semanas debido a un tumor en los senos etmoidales que obstruía las fosas nasales. Se diagnosticó hemangioma fusocelular y se extirpó parcialmente el tumor. A los seis meses de seguimiento, se observó una regresión mínima con lesiones residuales. A los 30 meses, se observó que el tumor residual había desaparecido. El hemangioma fusocelular es infrecuente en cabeza y cuello y, a veces, la presentación no es indicativa del diagnóstico. El examen histopatológico ayuda con el diagnóstico diferencial y el tratamiento. La sensibilización sobre el hemangioma fusocelular podría aumentar los casos informados.


Spindle cell hemangioma (SCH) is a benign unusual vascular neoplasm. It does not have gender predilection and can occur at all ages. The disease affects dermis and subcutis of distal extremities predominantly; head and neck involvement is very rare, paranasal sinus involvement has not been reported before. Herein we present a 4-month-old infant with nasal obstruction since two weeks of age due to a mass in ethmoid sinus obliterating the nasal passage. After the histopathological diagnosis of SCH, the tumor was partially resected. In the sixth month follow-up, there was minimal regression of residual lesions. In the imaging studies performed 30 months after the surgery, the residual mass was found to be disappeared. SCH is not frequent in the head and neck, and presentation of some patients may not suggest the diagnosis. Histopathology is important for differential diagnosis and to orientate treatment. Awareness of SCH may increase the reported cases


Subject(s)
Humans , Male , Infant , Paranasal Sinuses , Head and Neck Neoplasms/surgery , Hemangioma/diagnosis , Nasal Obstruction
12.
Rev. colomb. cir ; 36(1): 35-41, 20210000. fig
Article in Spanish | LILACS | ID: biblio-1148498

ABSTRACT

Introducción. La pandemia por SARS-CoV-2 modificó la prestación de servicios de salud para priorizar el manejo de los casos emergentes. La Asociación Colombiana de Cirugía fue una de las primeras en liderar dichas iniciativas. Este estudio describe el comportamiento de los servicios de salud de un centro especializado en patología de cabeza y cuello en Medellín, Colombia. Métodos. Este es un análisis retrospectivo de una cohorte prospectiva, en el que se usó la base de datos administrativa. Las variables analizadas fueron el número y tipo de consultas y procedimientos, realizados en el periodo de enero-julio de 2109 y su comparación con el mismo periodo de 2020. Se realizó un análisis descriptivo usando porcentajes, promedio y desviación estándar. Resultados. Se analizaron 3521 consultas y 866 procedimientos quirúrgicos. Se observó una caída del número de consultas, que alcanzó su punto más bajo en el mes de abril, con un 33,9 % de disminución El porcentaje de consultas de telemedicina aumentó desde marzo de 2020, hasta alcanzar un 98 % en el mes de abril. Se observó una caída del número de procedimientos, con un aumento compensatorio en junio del 62,5 %. A la fecha, ningún paciente ni integrante del equipo de atención en salud ha presentado infección por COVID-19. Discusión. La pandemia de COVID-19 tuvo un efecto importante en el número de consultas y de procedimientos quirúrgicos de cabeza y cuello. La estrategia de telemedicina ayudó a compensar la disminución del acceso a la atención especializada


Introduction. The SARS-CoV-2 pandemic modified the provision of health services to prioritize the management of emerging cases. The Colombian Association of Surgery was one of the first to lead these initiatives. This study describes the behavior of the health services of a center specialized in head and neck pathology in Medellín, Colombia. Methods. This is a retrospective analysis of a prospective cohort, in which the administrative database was used. The variables analyzed were the number and type of consultations and procedures, carried out in the period from January to July 2019 and their comparison with the same period in 2020. A descriptive analysis was carried out using percentages, average and standard deviation. Results. On the database, 3,521 consultations and 866 surgical procedures were analyzed. A drop in the number of consultations was observed, reaching its lowest point in the month of April, with a 33.9% decrease. The percentage of telemedicine consultations increased since March 2020, reaching 98% in the month of April. A drop in the number of procedures was observed, with a compensatory increase in June of 62.5%. To date, no patient or member of the health care team has developed a COVID-19 infection. Discussion. The COVID-19 pandemic had a significant effect on the number of consultations and head and neck surgical procedures. The telemedicine strategy helped to compensate the decrease in access to specialized care


Subject(s)
Humans , Coronavirus Infections , General Surgery , SARS Virus , Head and Neck Neoplasms
13.
Article in English | WPRIM | ID: wpr-880867

ABSTRACT

Neck dissection for oral squamous-cell carcinoma (OSCC) is a clinically controversial issue and has therefore been the subject of abundant research. However, no one has performed a bibliometric study on this topic to date. The aim of this study was to assess the development of research on neck dissection for OSCC in terms of the historical evolution, current hotspots and future directions, particularly including research trends and frontiers from 2010 to 2019. Literature records related to research on neck dissection for OSCC were retrieved from the Web of Science Core Collection (WoSCC). CiteSpace was used as a tool to perform a bibliometric analysis of this topic. The survey included 2 096 papers. "Otorhinolaryngology" was the most popular research area. The most active institutions and countries were Memorial Sloan Kettering Cancer Center and the USA, respectively. Shah J.P. was the most cited author. Among the six identified "core journals", Head & Neck ranked first. The top three trending keywords were 'invasion', 'upper aerodigestive' and 'negative neck'. 'D'Cruz AK (2015)' was the most cited and the strongest burst reference in the last decade. The study evaluated the effect on survival of elective versus therapeutic neck dissection in patients with lateralized early-stage OSCC. The depth of invasion and the management of N0 OSCC were research frontiers in this field. The present study provides a comprehensive bibliometric analysis of research on neck dissection for OSCC, which will assist investigators in exploring potential research directions.


Subject(s)
Bibliometrics , Carcinoma, Squamous Cell/surgery , Head and Neck Neoplasms , Humans , Mouth Neoplasms/surgery , Neck Dissection
14.
Article in English | WPRIM | ID: wpr-880866

ABSTRACT

As an important component of the tumor microenvironment, cancer-associated fibroblasts (CAFs) secrete energy metabolites to supply energy for tumor progression. Abnormal regulation of long noncoding RNAs (lncRNAs) is thought to contribute to glucose metabolism, but the role of lncRNAs in glycolysis in oral CAFs has not been systematically examined. In the present study, by using RNA sequencing and bioinformatics analysis, we analyzed the lncRNA/mRNA profiles of normal fibroblasts (NFs) derived from normal tissues and CAFs derived from patients with oral squamous cell carcinoma (OSCC). LncRNA H19 was identified as a key lncRNA in oral CAFs and was synchronously upregulated in both oral cancer cell lines and CAFs. Using small interfering RNA (siRNA) strategies, we determined that lncRNA H19 knockdown affected proliferation, migration, and glycolysis in oral CAFs. We found that knockdown of lncRNA H19 by siRNA suppressed the MAPK signaling pathway, 6-phosphofructo-2-kinase/fructose-2,6-biphosphatase 3 (PFKFB3) and miR-675-5p. Furthermore, the lncRNA H19/miR-675-5p/PFKFB3 axis was involved in promoting the glycolysis pathway in oral CAFs, as demonstrated by a luciferase reporter system assay and treatment with a miRNA-specific inhibitor. Our study presents a new way to understand glucose metabolism in oral CAFs, theoretically providing a novel biomarker for OSCC molecular diagnosis and a new target for antitumor therapy.


Subject(s)
Cancer-Associated Fibroblasts/metabolism , Carcinoma, Squamous Cell/genetics , Cell Line, Tumor , Cell Proliferation , Gene Expression Regulation, Neoplastic , Glycolysis , Head and Neck Neoplasms , Humans , MicroRNAs/metabolism , Mouth Neoplasms/genetics , Phosphofructokinase-2/genetics , RNA, Long Noncoding/genetics , Signal Transduction , Tumor Microenvironment
15.
Article in English | WPRIM | ID: wpr-880864

ABSTRACT

C18 ceramide plays an important role in the occurrence and development of oral squamous cell carcinoma. However, the function of ceramide synthase 1, a key enzyme in C18 ceramide synthesis, in oral squamous cell carcinoma is still unclear. The aim of our study was to investigate the relationship between ceramide synthase 1 and oral cancer. In this study, we found that the expression of ceramide synthase 1 was downregulated in oral cancer tissues and cell lines. In a mouse oral squamous cell carcinoma model induced by 4-nitroquinolin-1-oxide, ceramide synthase 1 knockout was associated with the severity of oral malignant transformation. Immunohistochemical studies showed significant upregulation of PCNA, MMP2, MMP9, and BCL2 expression and downregulation of BAX expression in the pathological hyperplastic area. In addition, ceramide synthase 1 knockdown promoted cell proliferation, migration, and invasion in vitro. Overexpression of CERS1 obtained the opposite effect. Ceramide synthase 1 knockdown caused endoplasmic reticulum stress and induced the VEGFA upregulation. Activating transcription factor 4 is responsible for ceramide synthase 1 knockdown caused VEGFA transcriptional upregulation. In addition, mild endoplasmic reticulum stress caused by ceramide synthase 1 knockdown could induce cisplatin resistance. Taken together, our study suggests that ceramide synthase 1 is downregulated in oral cancer and promotes the aggressiveness of oral squamous cell carcinoma and chemotherapeutic drug resistance.


Subject(s)
Animals , Apoptosis , Carcinoma, Squamous Cell , Cell Line, Tumor , Down-Regulation , Endoplasmic Reticulum Stress , Head and Neck Neoplasms , Mice , Mouth Neoplasms , Oxidoreductases
16.
Article in English | WPRIM | ID: wpr-880862

ABSTRACT

Oral squamous cell carcinoma (OSCC) has a high incidence of metastasis. Tumour immunotherapy targeting PD-L1 or PD-1 has been revolutionary; however, only a few patients with OSCC respond to this treatment. Therefore, it is essential to gain insights into the molecular mechanisms underlying the growth and metastasis of OSCC. In this study, we analysed the expression levels of protein kinase D3 (PKD3) and PD-L1 and their correlation with the expression of mesenchymal and epithelial markers. We found that the expression of PKD3 and PD-L1 in OSCC cells and tissues was significantly increased, which correlated positively with that of mesenchymal markers but negatively with that of epithelial markers. Silencing PKD3 significantly inhibited the growth, metastasis and invasion of OSCC cells, while its overexpression promoted these processes. Our further analyses revealed that there was positive feedback regulation between PKD3 and PD-L1, which could drive EMT of OSCC cells via the ERK/STAT1/3 pathway, thereby promoting tumour growth and metastasis. Furthermore, silencing PKD3 significantly inhibited the expression of PD-L1, and lymph node metastasis of OSCC was investigated with a mouse footpad xenograft model. Thus, our findings provide a theoretical basis for targeting PKD3 as an alternative method to block EMT for regulating PD-L1 expression and inhibiting OSCC growth and metastasis.


Subject(s)
Animals , B7-H1 Antigen/metabolism , Carcinoma, Squamous Cell , Cell Line, Tumor , Feedback , Head and Neck Neoplasms , Humans , Mice , Mouth Neoplasms , Protein Kinase C , STAT1 Transcription Factor , Squamous Cell Carcinoma of Head and Neck
17.
Article in English | WPRIM | ID: wpr-880860

ABSTRACT

Oral squamous cell carcinoma (OSCC) is one of the most common cancers worldwide, and with 354 864 new cases each year. Cancer metastasis, recurrence, and drug resistance are the main causes to cripples and deaths of OSCC patients. As potent growth factors, fibroblast growth factors (FGFs) are frequently susceptible to being hijacked by cancer cells. In this study, we show that FGF8 is upregulated in OSCC tissues and high FGF8 expression is related with a set of clinicopathologic parameters, including age, drinking, and survival time. FGF8 treatment enhances the invasive capability of OSCC cells. Lentivirus-based FGF8 expression promotes OSCC metastasis in a mouse lung metastasis model. Further, mechanistic study demonstrates that FGF8 induces epithelial-mesenchymal transition (EMT) in OSCC cells. These results highlight a pro-metastatic function of FGF8, and underscore the role of FGF8 in OSCC development.


Subject(s)
Animals , Carcinoma, Squamous Cell , Cell Line, Tumor , Cell Movement , Epithelial-Mesenchymal Transition , Fibroblast Growth Factor 8 , Head and Neck Neoplasms , Humans , Mice , Mouth Neoplasms , Neoplasm Recurrence, Local , Squamous Cell Carcinoma of Head and Neck
18.
Article in English | WPRIM | ID: wpr-880857

ABSTRACT

Oral squamous cell carcinoma (OSCC) become a heavy burden of public health, with approximately 300 000 newly diagnosed cases and 145 000 deaths worldwide per year. Nucleotide metabolism fuel DNA replication and RNA synthesis, which is indispensable for cell proliferation. But how tumor cells orchestrate nucleotide metabolic enzymes to support their rapid growth is largely unknown. Here we show that expression of pyrimidine metabolic enzyme dihydroorotate dehydrogenase (DHODH) is upregulated in OSCC tissues, compared to non-cancerous adjacent tissues. Enhanced expression of DHODH is correlated with a shortened patient survival time. Inhibition of DHODH by either shRNA or selective inhibitors impairs proliferation of OSCC cells and growth of tumor xenograft. Further, loss of functional DHODH imped de novo pyrimidine synthesis, and disrupt mitochondrial respiration probably through destabilizing the MICOS complex. Mechanistic study shows that transcriptional factor SOX2 plays an important role in the upregulation of DHODH in OSCC. Our findings add to the knowledge of how cancer cells co-opt nucleotide metabolism to support their rapid growth, and thereby highlight DHODH as a potential prognostic and therapeutic target for OSCC treatment.


Subject(s)
Carcinoma, Squamous Cell , Cell Proliferation , Head and Neck Neoplasms , Humans , Mouth Neoplasms , Oxidoreductases Acting on CH-CH Group Donors , SOXB1 Transcription Factors , Squamous Cell Carcinoma of Head and Neck
19.
Article in English | WPRIM | ID: wpr-887755

ABSTRACT

OBJECTIVES@#To investigate the expression of Ki-67, Cyclin D1, P53, and P16 in patients with oral leukoplakia (OLK) and OLK cancerization who have aspicy diet in Chengdu.@*METHODS@#Thirtypatients with OLK andspicy diet and 15 patients with OLK without spicy diet in Chengdu were divided into three groups: hyperplastic OLK (OLK-), OLK with mild to moderate dysplasia (OLK+), and severe dysplastic  OLK or oral squamous cell carcinoma (OSCC) transforming from OLK (OLK++/OSCC). The expression of Ki-67, Cyclin D1, P53, and P16 were detected by immunohistochemistry and statistically analyzed.@*RESULTS@#The expression of Ki-67 and P53 in patients with or without spicy diet in the OLK+and OLK++/OSCC groups were stronger than that of the OLK- group (@*CONCLUSIONS@#Spicy diet did not have an influence on the expression of Ki-67, Cyclin D1, P53, and P16 in patients with OLK and OSCC. The expression of Ki-67, Cyclin D1, and P53 increased with the development of OLK, whereas P16 showed opposite expression trend.


Subject(s)
Carcinoma, Squamous Cell , Cyclin D1 , Diet , Head and Neck Neoplasms , Humans , Ki-67 Antigen , Leukoplakia, Oral , Mouth Neoplasms , Tumor Suppressor Protein p53
20.
Article in English | WPRIM | ID: wpr-887754

ABSTRACT

OBJECTIVES@#To investigate the effects of circ_0005379 on the proliferation, apoptosis, migration, and invasion of oral squamous cell carcinoma (OSCC) cells and its mechanism.@*METHODS@#Real-time quantitative polymerase chain reaction (RT-qPCR) was used to detect the expression levels of circ_0005379 and miR-17-5p in OSCC tissues and SCC15 cell lines. Western blot was used to detect the expression levels of acyl-CoA oxidase 1 (ACOX1). The circ_0005379 overexpression vector was transfected into SCC15 cells. Methyl thiazolyl tetrazolium blue staining, flow cytometry, Transwell, and Western blot were used to detect the effects of circ_0005379 overexpression on the proliferation, apoptosis, migration, and invasion of SCC15 cells and the expression of E-cadherin, β-catenin, and Snail proteins. Dual luciferase reporter assay and RNA immunoprecipitation were used to examine the regulation of circ_0005379, miR-17-5p, miR-17-5p, and ACOX1 in SCC15 cells. A nude mouse xenograft model of SCC15 cells stably overexpressing circ_0005379 was established, and the effect of circ_0005379 overexpression on the growth of xenografts in nude mice was observed.@*RESULTS@#Compared with adjacent cancer tissues, the expression levels of circ_0005379 and ACOX1 proteins in OSCC tissues were decreased (@*CONCLUSIONS@#circ_0005379 may inhibit the proliferation, migration, and invasion of OSCC cells by downregulating the expression of miR-17-5p and upregulating ACOX1, which promote apoptosis and inhibit tumor growth


Subject(s)
Acyl-CoA Oxidase , Animals , Carcinoma, Squamous Cell/genetics , Cell Proliferation , Head and Neck Neoplasms , Humans , Mice , Mice, Nude , MicroRNAs , Mouth Neoplasms/genetics , RNA, Circular , Squamous Cell Carcinoma of Head and Neck
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