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1.
Adv Exp Med Biol ; 1287: 105-122, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33034029

RESUMO

The NOTCH pathway is critical for the development of many cell types including the squamous epithelium lining of cutaneous and mucosal surfaces. In genetically engineered mouse models, Notch1 acts as one of the first steps to commit basal keratinocytes to terminally differentiate. Similarly, in human head and neck squamous cell cancers (HNSCCs), NOTCH1 is often lost consistent with its essential tumor-suppressive role for initiating keratinocyte differentiation. However, constitutive NOTCH1 activity in the epithelium results in expansion of the spinous keratinocyte layers and impaired terminal differentiation is consistent with the role of NOTCH1 as an oncogene in other cancers, especially in T-cell acute lymphoblastic leukemia. We have previously observed that NOTCH1 plays a dual role as both a tumor suppressor and oncogene, depending on the mutational context of the tumor. Namely, gain or loss or NOTCH1 activity promotes the development of human papillomavirus (HPV)-associated cancers. The additional HPV oncogenes likely disrupt the tumor-suppressive activities of NOTCH and enable the oncogenic pathways activated by NOTCH to promote tumor growth. In this review, we detail the role of NOTCH pathway in head and neck cancers with a focus on HPV-associated cancers.


Assuntos
Carcinogênese , Neoplasias Bucais/metabolismo , Neoplasias Bucais/virologia , Papillomaviridae/patogenicidade , Infecções por Papillomavirus/metabolismo , Receptores Notch/metabolismo , Transdução de Sinais , Animais , Carcinoma de Células Escamosas/metabolismo , Carcinoma de Células Escamosas/virologia , Humanos , Infecções por Papillomavirus/virologia
2.
Gene ; 766: 145151, 2021 Jan 15.
Artigo em Inglês | MEDLINE | ID: mdl-32950635

RESUMO

Smoking tobacco is the major hazard for lung cancer in Indian subcontinent especially men, compare to woman where, other important risk factors such as air pollutions are responsible. So, the aim of the study is to compare chronic smokers (CS) and non-smokers living in areas with air quality categorized as poor (AQI 201-300) or moderate (AQI 101-200). We measured the expression of non-small cell lung cancer (NSCLC) biomarkers;. IDH1, CEA, Cyfra21-1, and TPA through quantitative Real-Time PCR (qRT-PCR) and compared the levels of upregulation of the transcripts in stage IIIa NSCLC over control benign tissues among the smoking and AQI settings. Though the all biomarkers were significantly up-regulated in tumor tissues compared to control benign tissues, the fold change increase of IDH1 and CEA was highest in CS-poor/moderate AQI, followed by non-smokers-poor AQI and non-smokers moderate AQI. This indicates the aggressiveness and poor prognosis in CS living in either poor or moderate AQI areas. The level of Cyfra21-1 was lower in in the CS groups in comparison to non-smokers in the poor AQI area. This suggest higher Lung Squamous cell carcinoma histology in non-smokers living areas with poor AQI. Hence, we conclude that poor air quality can be as injurious for lung cancers as chronic smoking.


Assuntos
Antígenos de Neoplasias/genética , Antígeno Carcinoembrionário/genética , Carcinoma Pulmonar de Células não Pequenas/genética , Isocitrato Desidrogenase/genética , Queratina-19/genética , Neoplasias Pulmonares/genética , Fumar/genética , Poluição do Ar , Biomarcadores Tumorais/genética , Carcinoma Pulmonar de Células não Pequenas/patologia , Carcinoma de Células Escamosas/genética , Feminino , Humanos , Neoplasias Pulmonares/patologia , Masculino , Pessoa de Meia-Idade , não Fumantes , Prognóstico , Fumantes , Transcriptoma/genética
3.
Adv Exp Med Biol ; 1287: 123-154, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33034030

RESUMO

Since many decades, nonmelanoma skin cancer (NMSCs) is the most common malignancy worldwide. Basal cell carcinomas (BCC) and squamous cell carcinomas (SCC) are the major types of NMSCs, representing approximately 70% and 25% of these neoplasias, respectively. Because of their continuously rising incidence rates, NMSCs represent a constantly increasing global challenge for healthcare, although they are in most cases nonlethal and curable (e.g., by surgery). While at present, carcinogenesis of NMSC is still not fully understood, the relevance of genetic and molecular alterations in several pathways, including evolutionary highly conserved Notch signaling, has now been shown convincingly. The Notch pathway, which was first developed during evolution in metazoans and that was first discovered in fruit flies (Drosophila melanogaster), governs cell fate decisions and many other fundamental processes that are of high relevance not only for embryonic development, but also for initiation, promotion, and progression of cancer. Choosing NMSC as a model, we give in this review a brief overview on the interaction of Notch signaling with important oncogenic and tumor suppressor pathways and on its role for several hallmarks of carcinogenesis and cancer progression, including the regulation of cancer stem cells, tumor angiogenesis, and senescence.


Assuntos
Carcinogênese , Células-Tronco Neoplásicas/patologia , Neovascularização Patológica , Receptores Notch/metabolismo , Transdução de Sinais , Neoplasias Cutâneas/metabolismo , Neoplasias Cutâneas/patologia , Animais , Carcinoma Basocelular/metabolismo , Carcinoma Basocelular/patologia , Carcinoma de Células Escamosas/metabolismo , Carcinoma de Células Escamosas/patologia , Humanos , Neoplasias Cutâneas/irrigação sanguínea
4.
J Infect Chemother ; 27(1): 99-102, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-33023821

RESUMO

We present three patients affected by pulmonary squamous cell carcinoma, metastatic esophageal cancer and advanced non-Hodgkin lymphoma, who incurred in coronavirus 2019 (COVID-19) infection during the early phase of epidemic wave in Italy. All patients presented with fever. Social contact with subject positive for COVID-19 was declared in only one of the three cases. In all cases, laboratory findings showed lymphopenia and elevated C-reactive protein (CRP). Chest x-ray and computed tomography showed bilateral ground-glass opacities, shadowing, interstitial abnormalities, and "crazy paving" pattern which evolved with superimposition of consolidations in one patient. All patients received antiviral therapy based on ritonavir and lopinavir, associated with hydroxychloroquine. Despite treatment, two patients with advanced cancers died after 39 and 17 days of hospitalization, while the patient with lung cancer was dismissed at home, in good conditions.


Assuntos
Infecções por Coronavirus/tratamento farmacológico , Hidroxicloroquina/uso terapêutico , Lopinavir/uso terapêutico , Neoplasias/complicações , Pneumonia Viral/tratamento farmacológico , Ritonavir/uso terapêutico , Idoso , Antibacterianos/uso terapêutico , Antivirais/uso terapêutico , Betacoronavirus , Carcinoma de Células Escamosas/complicações , Carcinoma de Células Escamosas/diagnóstico , Carcinoma de Células Escamosas/tratamento farmacológico , Infecções por Coronavirus/complicações , Infecções por Coronavirus/diagnóstico , Surtos de Doenças , Quimioterapia Combinada , Neoplasias Esofágicas/complicações , Neoplasias Esofágicas/diagnóstico , Neoplasias Esofágicas/tratamento farmacológico , Evolução Fatal , Humanos , Itália , Neoplasias Pulmonares/complicações , Neoplasias Pulmonares/diagnóstico , Neoplasias Pulmonares/tratamento farmacológico , Linfoma não Hodgkin/complicações , Linfoma não Hodgkin/diagnóstico , Linfoma não Hodgkin/tratamento farmacológico , Masculino , Pessoa de Meia-Idade , Neoplasias/diagnóstico , Neoplasias/tratamento farmacológico , Pandemias , Pneumonia Viral/complicações , Pneumonia Viral/diagnóstico , Tomografia Computadorizada por Raios X , Resultado do Tratamento
5.
Kyobu Geka ; 73(10): 883-886, 2020 Sep.
Artigo em Japonês | MEDLINE | ID: mdl-33130784

RESUMO

Definitive chemo-radiotherapy (CRT) in locally advanced esophageal cancer is associated with a high rate of loco-regional recurrence. In this condition, salvage esophagectomy may be considered as a therapeutic option. Despite the survival benefits of this combined approach, salvage esophagectomy remains a highly invasive procedure that confers a significant rate of morbidity and mortality and can adversely affect long-term quality of life. So careful evaluation is needed before the decision of the indication for salvage surgery. In order to prevent postoperative morbidity or mortality in patients underwent salvage esophagectomy, modifications in the surgical procedures, including minification of lymph node dissection and conversion to 2-stage surgery, are needed. Especially, it was necessary to pay attention to preserve blood flow of trachea. As aspiration pneumonia is sometimes fatal in patients after salvage esophagectomy, care to avoid aspiration is needed. Respiratory care is also essential during the follow-up period as well as perioperative period in patients who underwent salvage esophagectomy. Although salvage esophagectomy is considered a high-risk surgery, if indication for surgery was appropriate, that could be the only way which could prolong survival of locally advanced esophageal cancer patients after CRT.


Assuntos
Carcinoma de Células Escamosas , Neoplasias Esofágicas , Carcinoma de Células Escamosas/cirurgia , Quimiorradioterapia , Neoplasias Esofágicas/tratamento farmacológico , Neoplasias Esofágicas/cirurgia , Esofagectomia , Humanos , Recidiva Local de Neoplasia/cirurgia , Qualidade de Vida , Estudos Retrospectivos , Terapia de Salvação
6.
Gan To Kagaku Ryoho ; 47(9): 1363-1365, 2020 Sep.
Artigo em Japonês | MEDLINE | ID: mdl-33130701

RESUMO

We present an unusual case of late-onset acute pneumonitis developing 21 months after pembrolizumab monotherapy. An 80-year-old male with primary, pulmonary, squamous cell carcinoma underwent right lower lobectomy and lymph node dissection(ND2a-2); the postoperative pathological stage was ⅢA(pT2bN2M0)and the PD-L1 tumor proportion score 70%. Six months after surgery, he developed mediastinal lymph node(#2R), bilateral pulmonary, and hepatic metastases; pembrolizumab was administered every 3 weeks as a first-line treatment. A partial response was evident after 3 courses; we thus continued the monotherapy. However, after 28 courses(21 months)of pembrolizumab, we discontinued the regimen because acute pneumonitis(Grade 3)developed; we prescribed prednisolone at 50 mg/day. The acute pneumonitis shadow improved and prednisolone was tapered over 2 months. The patient exhibited no new lesion and no progressive disease 6 months after pembrolizumab was discontinued.


Assuntos
Carcinoma de Células Escamosas , Neoplasias Pulmonares , Pneumonia , Idoso de 80 Anos ou mais , Anticorpos Monoclonais Humanizados , Carcinoma de Células Escamosas/tratamento farmacológico , Carcinoma de Células Escamosas/cirurgia , Humanos , Neoplasias Pulmonares/tratamento farmacológico , Neoplasias Pulmonares/cirurgia , Masculino , Recidiva Local de Neoplasia , Pneumonia/induzido quimicamente , Pneumonia/tratamento farmacológico
7.
Georgian Med News ; (306): 147-151, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-33130663

RESUMO

In this review, we have discussed the relationships between oral squamous cell carcinoma (OSCC) and dental implants. In the last decade, dental implants have been widely used for the treatment of complete or partial edentulism. Despite the fact that they have seen incredible success and the use of dental implants increases, concerns over safety and efficiency is rising as well. The literature analysis has shown that the number of reported cases when the OSCC development is associated with peri implantitis is gradually increasing. The possibility of squamous cell carcinoma development must be considered when evaluating the peri-implantitis. We highly recommend periodic oral and radiographic examination after the implant placement. The patients with peri-implantitis that do not respond to conventional treatment methods, and the patients who have a severe or rapid progression of peri-implantitis require biopsy. The histopathological examination will aid with the differential diagnosis between peri-implantitis and OSCC, and hence, provide the correct diagnosis.


Assuntos
Carcinoma de Células Escamosas , Implantes Dentários , Neoplasias Bucais , Peri-Implantite , Biópsia , Carcinoma de Células Escamosas/diagnóstico , Carcinoma de Células Escamosas/etiologia , Implantes Dentários/efeitos adversos , Diagnóstico Diferencial , Humanos , Neoplasias Bucais/diagnóstico , Neoplasias Bucais/etiologia
8.
Nat Commun ; 11(1): 5671, 2020 11 09.
Artigo em Inglês | MEDLINE | ID: mdl-33168804

RESUMO

To establish whether 4-nitroquinoline N-oxide-induced carcinogenesis mirrors the heterogeneity of human oral squamous cell carcinoma (OSCC), we have performed genomic analysis of mouse tongue lesions. The mutational signatures of human and mouse OSCC overlap extensively. Mutational burden is higher in moderate dysplasias and invasive SCCs than in hyperplasias and mild dysplasias, although mutations in p53, Notch1 and Fat1 occur in early lesions. Laminin-α3 mutations are associated with tumour invasiveness and Notch1 mutant tumours have an increased immune infiltrate. Computational modelling of clonal dynamics indicates that high genetic heterogeneity may be a feature of those mild dysplasias that are likely to progress to more aggressive tumours. These studies provide a foundation for exploring OSCC evolution, heterogeneity and progression.


Assuntos
Carcinoma de Células Escamosas/genética , Regulação Neoplásica da Expressão Gênica , Genômica , Neoplasias Bucais/genética , 4-Nitroquinolina-1-Óxido/efeitos adversos , Animais , Caderinas/genética , Carcinogênese/induzido quimicamente , Carcinoma de Células Escamosas/patologia , Modelos Animais de Doenças , Progressão da Doença , Exoma/genética , Genes Neoplásicos , Genes p53/genética , Camundongos , Camundongos Endogâmicos C57BL , Neoplasias Bucais/patologia , Mutação , Invasividade Neoplásica , Receptor Notch1/genética
9.
J Breath Res ; 14(4): 046013, 2020 10 06.
Artigo em Inglês | MEDLINE | ID: mdl-33021204

RESUMO

Volatile organic compound (VOC) breath testing of lung and head and neck squamous cell carcinoma (SCC) has been widely studied, however little is known regarding VOC profiles of in-situ SCC. A prospective study of VOC in patients with histologically proven SCC, either in-situ or advanced, and controls. Breath samples were analysed using the E-nose Cyranose ®320 and by gas chromatography/mass spectroscopy. Predictive models were developed using bootstrap forest using all 32 sensors. Data from 55 participants was analysed: 42 SCC cases comprising 20 bronchial (10 in-situ, 10 advanced) and 22 laryngeal (12 in-situ, 10 advanced), and 13 controls. There were 32 (76%) male SCC cases with mean age 63.6 (SD = 9.5) compared with 11 (85%) male controls with mean age 61.9 (SD = 10.1). Predictive models for in situ cases had good sensitivity and specificity compared to controls (overall, 95% and 69%; laryngeal, 100% and 85%; bronchial, 77% and 80%). When distinguishing in-situ and advanced tumours, sensitivity and specificity 82% and 75% respectively. For different tumour types (bronchial versus advanced laryngeal) sensitivity and specificity were 100% and 80% respectively. VOCs isolated from in-situ cancers included some previously demonstrated in advanced cancers and some novel VOCs. In-situ bronchial and laryngeal cancer can be detected by VOC analysis. Distinction from normal controls and between the two tumour types could allow screening in high risk groups for these curable lesions.


Assuntos
Testes Respiratórios/métodos , Neoplasias Brônquicas/diagnóstico , Carcinoma in Situ/diagnóstico , Carcinoma de Células Escamosas/diagnóstico , Neoplasias Laríngeas/diagnóstico , Compostos Orgânicos Voláteis/análise , Brônquios/patologia , Broncoscopia , Estudos de Casos e Controles , Feminino , Fluorescência , Cromatografia Gasosa-Espectrometria de Massas , Humanos , Laringe/patologia , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos
10.
Med Oral Patol Oral Cir Bucal ; 25(6): e769-e774, 2020 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-33037811

RESUMO

BACKGROUND: The aim was to examine the interval since first symptoms until final diagnosis of squamous cell carcinoma (SCC) in the head and neck region in southern Brazil. MATERIAL AND METHODS: The individuals were prospectively selected and underwent anamnesis, physical examination and interview in the first medical consultation at a Cancer Hospital from south of Brazil. RESULTS: From 488 patients who underwent clinical examination, 105 were included in the study with diagnosis of SCC. Patients average interval from first symptoms to final diagnosis was 152 days (median 86; max:1105; min: 1), the average professional interval was 108 days (median: 97; max:525; min: 1) , and the average total period interval was 258 days (median: 186; max:1177; min: 45). Factors statistically associated with patient and diagnosis itinerary intervals were smoking and poorly adapted dentures and distance from home to hospital, respectively. CONCLUSIONS: The identification of the itinerary characteristics of this specific population may reflect in more effective public policies, such as primary and secondary prevention programs, aiming to increase the survival of oncological patient. Furthermore, the knowledge of the variables that influence the late diagnosis minimizes patient's journey in search of care to cancer centers through health programs.


Assuntos
Carcinoma de Células Escamosas , Neoplasias de Cabeça e Pescoço , Brasil/epidemiologia , Carcinoma de Células Escamosas/diagnóstico , Carcinoma de Células Escamosas/epidemiologia , Neoplasias de Cabeça e Pescoço/diagnóstico , Neoplasias de Cabeça e Pescoço/epidemiologia , Humanos , Pescoço , Fumar
11.
Beijing Da Xue Xue Bao Yi Xue Ban ; 52(5): 902-906, 2020 Oct 18.
Artigo em Chinês | MEDLINE | ID: mdl-33047727

RESUMO

OBJECTIVE: To investigate the effects of salinomycin on the proliferation and apoptosis of oral squamous carcinoma cells and to further understand the mechanisms of these effects. METHODS: The human oral squamous carcinoma cell line CAL-27 was cultured in different concentrations of salinomycin and cisplatin. After co-culture with 0, 1, 2, 4, 8, 16 and 32 µmol/L salinomycin or 0, 1.25, 2.5, 5, 10, 20, 40 and 80 µmol/L cisplatin for 24 hours and 48 hours, the proliferation of oral squamous carcinoma cells were detected by cell counting kit-8(CCK-8) assay. After being exposed to 0, 2, 4, 8 µmol/L salinomycin and 0, 5, 10, 20 µmol/L cisplatin for 48 hours, the cell cycle of oral squamous carcinoma cells was detected by flow cytometry assay, and Western blot analysis was performed to analyze the expressions of cysteine-containing aspartate-specific proteases-3(Caspase-3), cysteine-containing aspartate-specific proteases-9(Caspase-9), poly ADP-ribose polymerase (PARP), protein kinase B (Akt) and phosphorylated protein kinase B (p-Akt) protein in oral squamous carcinoma cells. RESULTS: Both salinomycin and cisplatin significantly inhibited the proliferation of oral squamous cell carcinoma CAL-27 cells in a time- and dose-dependent manner. However, compared with the first-line chemotherapeutic drug cisplatin, salinomycin showed stronger anti-proliferation activity in oral squamous carcinoma cells than cisp-latin (P < 0.001). After being exposed to 8 µmol/L salinomycin, CAL-27 cells exhibited markedly higher proportion in quiescent/ first gap phases (40.40%±1.99% vs. 64.46%±0.90%, P < 0.05), and had a significantly lower proportion in synthesis phases and second gap / mitosis phases (24.32%±2.30% vs. 18.73%±0.61%, P < 0.05; 35.01%±1.24% vs. 16.54%±1.31%, P < 0.05) compared with the dimethyl sulfoxide control group; moreover cisplatin didn't show cell-cycle specific effect on CAL-27. Western blot proved that salinomycin could up-regulate the expressions of Caspase-3 and Caspase-9 protein in oral squamous cell carcinoma CAL-27 cells (P < 0.05). At the same time, the levels of PARP, Akt and p-Akt protein were down-regulated (P < 0.05). CONCLUSION: Compared with cisplatin, salinomycin has a better inhibitory effect on the proliferation of oral squamous carcinoma cells and blocks the cell cycle process at the quiescent / first gap phase. At the same time, salinomycin could trigger apoptosis of oral squamous carcinoma cells and the mechanism is associated with the Akt/p-Akt signaling pathway.


Assuntos
Antineoplásicos , Carcinoma de Células Escamosas , Neoplasias Bucais , Antineoplásicos/farmacologia , Antineoplásicos/uso terapêutico , Apoptose/efeitos dos fármacos , Carcinoma de Células Escamosas/tratamento farmacológico , Linhagem Celular Tumoral , Proliferação de Células/efeitos dos fármacos , Humanos , Neoplasias Bucais/tratamento farmacológico , Piranos
12.
Medicine (Baltimore) ; 99(42): e22434, 2020 Oct 16.
Artigo em Inglês | MEDLINE | ID: mdl-33080677

RESUMO

BACKGROUND: Hypopharyngeal and esophageal squamous cell carcinoma (ESCC) are the most common double primary tumors with poor prognosis. Intensive work has been made to illuminate the etiology, but the common carcinogenic mechanism remains unclear. Thus, we conducted the study to seek to find the common gene signatures and key functional pathways associated with oncogenesis and treatment in hypopharyngeal squamous cell carcinoma (HSCC) and ESCC by bioinformatic analysis. METHODS: Three independent datasets (GSE2379, GSE20347, and GSE75241) were screened out from the Gene Expression Omnibus (GEO) database and the overlapping differentially expressed genes (DEGs) were identified using GEO2R online platform. Subsequently, the Gene Ontology (GO) annotation and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways enrichment analysis of DEGs were conducted using database for annotation, visualization and integrated discovery (DAVID). Meanwhile, the protein-protein interaction network (PPI) constructed by search tool for the retrieval of interacting genes (STRING) was visualized using Cytoscape. Afterwards, the most key module and hub genes were extracted from the PPI network using the Molecular Complex Detection plugin. Moreover, the gene expression profiling interactive analysis (GEPIA) was applied to verify the expression differences and conduct the survival analyses of hub genes. Finally, the interaction network of miRNAs and hub genes constructed by encyclopedia of RNA interactomes (ENCORI) was visualized using Cytoscape. RESULTS: A total of 43 DEGs were identified, comprising 25 upregulated genes and 18 downregulated genes, which were mainly involved in the extracellular matrix-receptor interaction, collagen metabolic, epidermis development, cell adhesion, and PI3K/Akt signaling pathways. Subsequently, 12 hub genes were obtained and survival analysis demonstrated SERPINE1 and SPP1 were closely related to poor prognosis of patients with HSCC and ESCC. Finally, hsa-miR-29c-3p, hsa-miR-29a-3p, and hsa-miR-29b-3p were confirmed as the top 3 interactive miRNAs that target the most hub genes according to the interaction network of miRNAs and hub genes. CONCLUSION: The common gene signatures and functional pathways identified in the study may contribute to understanding the molecular mechanisms involved in the carcinogenesis and progression of HSCC and ESCC, and provide potential diagnostic and therapeutic targets.


Assuntos
Carcinoma de Células Escamosas/genética , Neoplasias Esofágicas/genética , Perfilação da Expressão Gênica , Regulação Neoplásica da Expressão Gênica , Ontologia Genética , Neoplasias Faríngeas/genética , Biomarcadores Tumorais/genética , Biologia Computacional , Bases de Dados Genéticas , Humanos , Prognóstico
13.
Anticancer Res ; 40(11): 6101-6113, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-33109548

RESUMO

BACKGROUND/AIM: Oral squamous cell carcinoma (OSCC) is a common malignancy with poor prognosis. Therefore, novel therapeutic options are needed to improve prognosis of OSCC. Recently, microRNAs (miRs) have received increasing attention as a potential therapeutic tool for carcinomas. However, no definitive miR-based drugs for patients with OSCC have been reported to date. The aim of this study was to identify new miRs potentially involved in cellular processes associated with OSCC malignancy, which could lead to novel therapeutic strategies. MATERIALS AND METHODS: We identified miRs that are modulated in OSCC and possibly regulate OSCC malignancy, using miR microarray on OSCC cell lines. RESULTS: miR-935 and miR-509-3p were down-regulated in OSCC cell lines and patient tissues. When miR-935 was overexpressed in HSC-3-M3 cells, proliferation, migration, and invasion of the cell line was suppressed, whereas apoptosis was increased. Moreover, we showed that the gene inositol polyphosphate-4-phosphatase type I A (INPP4A) is a potential target whose expression is positively regulated by miR-935. CONCLUSION: miR-935 may function as a tumor suppressor by inhibiting OSCC malignancy via INPP4A induction. Therefore, miR-935 can be a new therapeutic candidate for OSCC treatment.


Assuntos
Carcinoma de Células Escamosas/enzimologia , Carcinoma de Células Escamosas/genética , MicroRNAs/metabolismo , Neoplasias Bucais/enzimologia , Neoplasias Bucais/genética , Monoéster Fosfórico Hidrolases/metabolismo , Apoptose/genética , Carcinoma de Células Escamosas/patologia , Linhagem Celular Tumoral , Movimento Celular/genética , Proliferação de Células/genética , Regulação para Baixo/efeitos dos fármacos , Regulação para Baixo/genética , Regulação Neoplásica da Expressão Gênica , Humanos , MicroRNAs/genética , Neoplasias Bucais/patologia , Invasividade Neoplásica , Regulação para Cima/efeitos dos fármacos , Regulação para Cima/genética
14.
Anticancer Res ; 40(11): 6295-6303, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-33109567

RESUMO

BACKGROUND/AIM: The global prevalence of head and neck squamous cell carcinoma (HNSCC) remains high, and its prognosis poor. We investigated the anticancer effects of melatonin in human tongue squamous cell carcinoma cells (SCC-25) and its mechanisms of action. MATERIALS AND METHODS: MTT assay was used to determine cell viability. To assess the effects of melatonin on SCC-25 cell metastasis, we conducted cell formation, wound healing, transwell migration and invasion assay. Western blot analysis was performed to measure the levels of autophage marker proteins. RESULTS: We found that melatonin treatment significantly reduced the viability and colony formation ability of SCC-25 cells, impairing cell migration and invasion. Western blotting assay revealed that melatonin increased the levels of autophagy markers, such as LC-3B and Beclin-1. Consequently, melatonin induces autophage in SCC-25 cells. CONCLUSION: Melatonin may be a promising anticancer agent for the treatment of human tongue squamous cell carcinoma.


Assuntos
Antineoplásicos/farmacologia , Autofagia/efeitos dos fármacos , Carcinoma de Células Escamosas/patologia , Melatonina/farmacologia , Neoplasias da Língua/patologia , Apoptose/efeitos dos fármacos , Extratos Celulares , Linhagem Celular Tumoral , Movimento Celular/efeitos dos fármacos , Forma Celular/efeitos dos fármacos , Sobrevivência Celular/efeitos dos fármacos , Humanos , Invasividade Neoplásica , Ensaio Tumoral de Célula-Tronco
15.
Crit Rev Oncol Hematol ; 156: 103116, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-33115701

RESUMO

OBJECTIVES: to provide accurate information about the global prevalence of human papillomavirus (HPV) in oropharyngeal squamous cell carcinomas (OPSCC). MATERIAL AND METHODS: a systematic review was performed using three main electronic databases. Studies were independently assessed by two reviewers based on established eligibility criteria, to identify the prevalence of HPV-driven OPSCC following criteria defined by the American Society of Clinical Oncology. Risk of bias was assessed using the Joanna Briggs Institute Critical Appraisal Checklist. Statistical software MedCalc was used to perform meta-analyses. RESULTS: from 2215 records found, 15 were included, reporting data from 6009 patients (time period range: 1980-2016), distributed in 11 countries. Eleven studies were considered as presenting low risk, and four as moderate risk of bias. Using proportion meta-analysis, pooled prevalence of HPV-driven OPSCC was 44.8 % (95 %CI: 36.4-53.5 %; i2 = 97.6 %), with the highest rates in New Zealand (74.5 %; 95 %CI: 60.9-85.3 %), and the lowest in Brazil (11.1 %; 95 %CI: 4.5-21.5 %). HPV prevalence was similar between males (45.7 %; 95 %CI: 36.5-55.0 %; i2 = 96.4 %) and females (42.2 %; 95 %CI: 34.3-50.5 %; i2 = 85.4 %). Mean/median age ranged from 59.1-67.1 years in the HPV-negative group, and from 55.7-63.5 years in the HPV-positive group. There was an overall discordance between testing by p16 (49.4 %; 95 %CI, 38.2-60.5 %; i2 = 96.2 %) and p16+ISH/PCR (44.7 %; 95 %CI, 33.5-56.2 %; i2 = 96.4 %). CONCLUSION: Overall pooled prevalence of HPV-driven OPSCC was approximately 45 %, with similar distribution among males and females. Double p16/HPV-DNA/RNA testing may be considered to increase specificity and prognostic accuracy.


Assuntos
Carcinoma de Células Escamosas , Neoplasias de Cabeça e Pescoço , Papillomaviridae , Infecções por Papillomavirus , Idoso , Carcinoma de Células Escamosas/diagnóstico , Carcinoma de Células Escamosas/epidemiologia , Inibidor p16 de Quinase Dependente de Ciclina , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Infecções por Papillomavirus/complicações , Infecções por Papillomavirus/diagnóstico , Infecções por Papillomavirus/epidemiologia , Prevalência
16.
Int J Nanomedicine ; 15: 7651-7666, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33116493

RESUMO

Introduction: Plants have always been a significant source of natural active components with biological properties. Celery seed oil (extracted from Apium graveolens) has several potential applications, but its therapeutic uses in the form of nanoemulsion formulation need to be investigated further in order to meet the demand in cancer treatment, and to alleviate the prevailing crisis arising from increased antimicrobial resistance. Methods: The therapeutic potential of celery seed oil was investigated through the formulation and testing of a nanoemulsion developed with Tween 80 (a non-ionic surfactant) and the utilization of an ultrasonication technique. Anticancer and apoptotic properties of the formulation were evaluated through MTT and Annexin V-FITC assays. The clonogenic assay aided in the identification of the antiproliferative properties of the formulation on oral squamous cell carcinoma. The antimicrobial study was supported by agar well diffusion assay, membrane integrity test and scanning electron microscopy. Results: Experiments identified relevant parameters, including optimal surfactant concentration and emulsification time. GC-MS analysis identified various components in the celery oil, but not their biological activities. A sonication time of 20 min resulted in a droplet diameter of 23.4 ± 1.80 nm. The IC50 concentration of the optimal nanoemulsion formulation against SAS cells was 1.4 µL/mL. At this concentration, cell proliferation was significantly reduced through inhibition of the anchorage-independent cell growth by disrupting colony formation and inducing cell death (apoptosis) of cancer cells. The nanoemulsion was also treated with a microbial suspension of S. aureus, and displayed antibacterial properties through lipid membrane fusion, causing cytoplasmic leakage as verified through agar well diffusion and membrane permeability assays. Scanning electron microscopy revealed complete distortion of the bacterial pathogen. Conclusion: The results in this study present celery as a possible constituent for cancer therapeutics and as a candidate for aggressive, yet safe cancer treatment. The celery-based nanoemulsion has the potential to act as a key alternative to standard antibiotic therapy.


Assuntos
Anti-Infecciosos/farmacologia , Antineoplásicos/farmacologia , Apium/química , Emulsões/química , Nanopartículas/química , Óleos Voláteis/farmacologia , Sonicação , Antineoplásicos/uso terapêutico , Apoptose/efeitos dos fármacos , Carcinoma de Células Escamosas/tratamento farmacológico , Morte Celular/efeitos dos fármacos , Linhagem Celular Tumoral , Permeabilidade da Membrana Celular/efeitos dos fármacos , Células Clonais , Composição de Medicamentos , Difusão Dinâmica da Luz , Cromatografia Gasosa-Espectrometria de Massas , Humanos , Testes de Sensibilidade Microbiana , Neoplasias Bucais/tratamento farmacológico , Nanopartículas/ultraestrutura , Óleos Voláteis/uso terapêutico , Staphylococcus aureus/efeitos dos fármacos , Staphylococcus aureus/ultraestrutura , Tensoativos/química
17.
Eur J Cardiothorac Surg ; 58(5): 991-996, 2020 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-33084869

RESUMO

OBJECTIVES: We reviewed the incidence of coronavirus disease 2019 cases and the postoperative outcomes of patients who had thoracic surgery during the beginning and at the highest point of transmission in our community. METHODS: We retrospectively reviewed patients who had undergone elective thoracic surgery from 12 February 2020 to 30 April 2020 and were symptomatic or tested positive for severe acute respiratory syndrome coronavirus 2 infection within 14 days after surgery, with a focus on their complications and potential deaths. RESULTS: Out of 101 surgical procedures, including 57 primary oncological resections, 6 lung transplants and 18 emergency procedures, only 5 cases of coronavirus disease 2019 were identified, 3 in the immediate postoperative period and 2 as outpatients. All 5 patients had cancer; the median age was 64 years. The main virus-related symptom was fever (80%), and the median onset of coronavirus disease 2019 was 3 days. Although 80% of the patients who had positive test results for severe acute respiratory syndrome coronavirus 2 required in-hospital care, none of them were considered severe or critical and none died. CONCLUSIONS: These results indicate that, in properly selected cases, with short preoperative in-hospital stays, strict isolation and infection control protocols, managed by a dedicated multidisciplinary team, a surgical procedure could be performed with a relatively low risk for the patient.


Assuntos
Betacoronavirus , Carcinoma de Células Escamosas/cirurgia , Infecções por Coronavirus/etiologia , Procedimentos Cirúrgicos Eletivos , Neoplasias Pulmonares/cirurgia , Pneumonia Viral/etiologia , Complicações Pós-Operatórias , Procedimentos Cirúrgicos Torácicos , Adulto , Idoso , Betacoronavirus/isolamento & purificação , Técnicas de Laboratório Clínico , Infecções por Coronavirus/diagnóstico , Infecções por Coronavirus/epidemiologia , Infecções por Coronavirus/terapia , Feminino , Seguimentos , Humanos , Incidência , Masculino , Avaliação de Resultados em Cuidados de Saúde , Pandemias , Pneumonia Viral/diagnóstico , Pneumonia Viral/epidemiologia , Pneumonia Viral/terapia , Complicações Pós-Operatórias/diagnóstico , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/terapia , Estudos Retrospectivos , Espanha , Resultado do Tratamento
18.
Stomatologiia (Mosk) ; 99(5): 92-95, 2020.
Artigo em Russo | MEDLINE | ID: mdl-33034184

RESUMO

The article presents a clinical case of an immunohistochemical study of a rare disease: necrotizing sialometaplasia in the hard palate. Due to the complexity of the differential diagnosis between necrotizing sialometaplasia and squamous cell carcinoma, an immunohistochemical method was used with antibodies to proteins Ki-67, P53, P63 and cytokeratins-7 and Immunohistochemical study established low proliferative activity of glandular cells in excretory ducts and metaplastic squamous epithelium for Ki-67 protein, significant expression of protein P63 was detected both in the ductal epithelium nuclei and in metaplastic areas and expression of the mutant protein P53 was approximately absent. Marked expression of cytokeratin-7 in the ducts cells and weak expression in necrotic acini of the glands and metaplastic epithelium was noted. It was shown that cytokeratin-15 homogeneously stains the peripheral zone of metaplastic epithelium, which is characteristic of a benign lesion. Thus, the panel of antibodies to proteins Ki-67, P53 and cytokeratins-7 and 15 allows to verify necrotizing sialometaplasia.


Assuntos
Carcinoma de Células Escamosas , Sialometaplasia Necrosante , Carcinoma de Células Escamosas/diagnóstico , Diagnóstico Diferencial , Epitélio , Humanos , Palato Duro , Sialometaplasia Necrosante/diagnóstico
19.
Artigo em Chinês | MEDLINE | ID: mdl-33040497

RESUMO

Objective:To explore the correlation factors and prognosis of local recurrence of laryngeal squamous cell carcinoma. Method:The clinical data of 69 patients with local recurrence of laryngeal squamous cell carcinoma were analyzed retrospectively. The survival curve was analyzed by Kaplan-Meier method, and the survival rate was compared by chi-square test and log rank test, Cox risk regression model was used to analyze multivariate survival. Result:Patients with local recurrence of laryngeal cancer had DFS and OS at 3 years of 17.4% and 63.8%, at 5 years of 4.3% and 40.6%, respectively. The invasion of the thyroid cartilage plate is significantly related to the prognosis of the patient, and the degree of squamous cell carcinoma differentiation is an independent factor influencing the prognosis, patients with non-invasive thyroid cartilage plate and high differentiated squamous cell carcinoma have better prognosis. Conclusion:Local recurrence of laryngeal carcinoma is common among patients with moderately or poorly differentiated squamous cell carcinoma, invasion of the thyroid cartilage plate, and positive or insufficient resection margins. And the prognosis of above patients is still poor after receiving salvage surgery; comprehensive treatment and closer follow-up should be paid to these patients.


Assuntos
Carcinoma de Células Escamosas , Neoplasias de Cabeça e Pescoço , Neoplasias Laríngeas , Humanos , Recidiva Local de Neoplasia/epidemiologia , Prognóstico , Estudos Retrospectivos
20.
Hua Xi Kou Qiang Yi Xue Za Zhi ; 38(5): 495-501, 2020 Oct 01.
Artigo em Chinês | MEDLINE | ID: mdl-33085231

RESUMO

OBJECTIVE: This study aims to study the effect of the enhancer of zeste homolog 2 (EZH2) inhibitor GSK126 on the proliferation and apoptosis of human tongue squamous cell carcinoma cells in vitro and explore its related mechanisms in order to obtain insights into the clinical treatment of tongue squamous cell carcinoma. METHODS: Different concentrations of GSK126 were applied to CAL-27 cells of tongue squamous cell carcinoma, and the effects of drugs on cell proliferation were detected through methyl thiazolyl tetrazolium (MTT) assay, colony formation assay, and 5-ethynyl-2'-deoxyuridine (EdU) fluorescence staining. Hoechst33342 fluorescence staining and the JC-1 method were used in observing apoptosis. The expression levels of extracellular regulated protein kinases (ERK), phospho-extracellular regulated protein kinases (p-ERK), Bax, Bcl-2, and Cleaved caspase-9 in Cal-27 cells were detected through Western blot. RESULTS: GSK126 inhibited CAL-27 cell proliferation and promoted apoptosis. GSK126 down-regulated the expression of p-ERK and Bcl-2 and increased the expression of Bax and Cleaved caspase-9 (P<0.05). CONCLUSIONS: GSK126 can inhibit the proliferation of CAL-27 cells in tongue squamous cell carcinoma and promote its apoptosis, and the related mechanism may be associated with the inhibition of the MEK/ERK signaling pathway and activation of the Bax/Bcl-2 pathway.


Assuntos
Apoptose , Carcinoma de Células Escamosas , Neoplasias da Língua , Carcinoma de Células Escamosas/tratamento farmacológico , Linhagem Celular Tumoral , Proliferação de Células , Proteína Potenciadora do Homólogo 2 de Zeste , Humanos , Indóis , Piridonas , Neoplasias da Língua/tratamento farmacológico
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