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1.
Funct Integr Genomics ; 24(5): 158, 2024 Sep 09.
Artigo em Inglês | MEDLINE | ID: mdl-39249547

RESUMO

Long non-coding RNAs (lncRNAs) regulate the occurrence, development and progression of oral squamous cell carcinoma (OSCC). We elucidated the expression features of MAGEA4-AS1 in patients with OSCC and its activity as an OSCC biomarker. Furthermore, the impact of up-regulation of MAGEA4-AS1 on the cellular behaviors (proliferation, migration and invasion) of OSCC cells and intrinsic signal mechanisms were evaluated. Firstly, we analyzed MAGEA4-AS1 expression data in The Cancer Genome Atlas (TCGA) OSCC using a bioinformatics approach and in 45 pairs of OSCC tissues using qPCR. Then CCK-8, ethynyl deoxyuridine, colony formation, transwell and wound healing assays were conducted to assess changes in the cell proliferation, migration and invasion protential of shMAGEA4-AS1 HSC3 and CAL27 cells. The RNA sequence of MAGEA4-AS1 was identified using the rapid amplification of cDNA ends (RACE) assay. And whole-transcriptome sequencing was used to identify MAGEA4-AS1 affected genes. Additionally, dual-luciferase reporter system, RNA-binding protein immunoprecipitation (RIP), and rescue experiments were performed to clarify the role of the MAGEA4-AS1-p53-MK2 signaling pathway. As results, we found MAGEA4-AS1 was up-regulated in OSCC tissues. We identified a 418 nucleotides length of the MAGEA4-AS1 transcript and it primarily located in the cell nucleus. MAGEA4-AS1 stable knockdown weakened the proliferation, migration and invasion abilities of OSCC cells. Mechanistically, p53 protein was capable to activate MK2 gene transcription. RIP assay revealed an interaction between p53 and MAGEA4-AS1. MK2 up-regulation in MAGEA4-AS1 down-regulated OSCC cells restored MK2 and epithelial-to-mesenchymal transition related proteins' expression levels. In conclusion, MAGEA4-AS1-p53 complexes bind to MK2 promoter, enhancing the transcription of MK2 and activating the downstream signaling pathways, consequently promoting the proliferation and metastasis of OSCC cells. MAGEA4-AS1 may serve as a diagnostic marker and therapeutic target for OSCC patients.


Assuntos
Movimento Celular , Proliferação de Células , Peptídeos e Proteínas de Sinalização Intracelular , Neoplasias Bucais , Proteínas Serina-Treonina Quinases , RNA Longo não Codificante , Transdução de Sinais , Proteína Supressora de Tumor p53 , Humanos , RNA Longo não Codificante/genética , RNA Longo não Codificante/metabolismo , Proteína Supressora de Tumor p53/metabolismo , Proteína Supressora de Tumor p53/genética , Neoplasias Bucais/genética , Neoplasias Bucais/metabolismo , Neoplasias Bucais/patologia , Linhagem Celular Tumoral , Peptídeos e Proteínas de Sinalização Intracelular/metabolismo , Peptídeos e Proteínas de Sinalização Intracelular/genética , Proteínas Serina-Treonina Quinases/metabolismo , Proteínas Serina-Treonina Quinases/genética , Carcinoma de Células Escamosas/genética , Carcinoma de Células Escamosas/metabolismo , Carcinoma de Células Escamosas/patologia , Regulação Neoplásica da Expressão Gênica , Feminino , Masculino , Metástase Neoplásica
2.
Gastrointest Endosc ; 100(3): 481-491.e6, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-38431107

RESUMO

BACKGROUND AND AIMS: Nonampullary duodenal neuroendocrine tumors (NAD-NETs) are rare, with limited evidence regarding endoscopic treatment. This study investigated the efficacy and safety of endoscopic resection of well-differentiated NAD-NETs and evaluated long-term outcomes, including local recurrence and metastasis. METHODS: Seventy-eight patients with NAD-NETs who underwent endoscopic resection between January 2011 and August 2022 were included. Clinicopathologic characteristics and treatment outcomes were collected and analyzed. RESULTS: En-bloc resection was achieved for 74 tumors (94.9%) and R0 resection for 68 tumors (87.2%). Univariate analysis identified tumors in the second part of the duodenum, tumor size ≥10 mm, and muscularis propria invasion as risk factors for noncurative resection. Two patients with R1 resection (vertical margin involvement) and 2 patients with lymphovascular invasion underwent additional surgery. Four patients experienced adverse events (5.1%), including 2 cases of delayed bleeding and 2 cases of perforation, all successfully managed conservatively. During a median follow-up period of 62.6 months, recurrence and lymph node metastasis were only detected in 1 patient with R1 resection 3 months after the original procedure. CONCLUSIONS: Endoscopic resection is safe and effective and provides a favorable long-term outcome for patients with well-differentiated NAD-NETs without regional lymph node or distant metastasis.


Assuntos
Neoplasias Duodenais , Invasividade Neoplásica , Recidiva Local de Neoplasia , Tumores Neuroendócrinos , Humanos , Neoplasias Duodenais/cirurgia , Neoplasias Duodenais/patologia , Masculino , Feminino , Pessoa de Meia-Idade , Tumores Neuroendócrinos/cirurgia , Tumores Neuroendócrinos/patologia , Idoso , Adulto , Carga Tumoral , Metástase Linfática , Duodenoscopia/métodos , Resultado do Tratamento , Estudos Retrospectivos , Ressecção Endoscópica de Mucosa/métodos , Margens de Excisão
3.
Environ Monit Assess ; 196(11): 1021, 2024 Oct 05.
Artigo em Inglês | MEDLINE | ID: mdl-39367949

RESUMO

The environmental pollution and health effects caused by pesticide production have consistently garnered considerable research interest. In the present study, the concentrations of five triazole fungicides (TFs) in air, indoor dust, and diet were monitored around a pesticide factory in eastern China from November 2020 to May 2021. The levels of five TFs in each sample were determined via UPLC‒MS/MS. For a health risk assessment, the United States Environmental Protection Agency's deterministic method was applied. The findings revealed that the total concentrations of the five TFs around the monitoring area ranged from 0.29 to 5.85 ng/m3 in outdoor air, 287.4 to 9878.5 µg/kg in indoor dust, 0.0578 to 4.948 µg/kg in vegetables, and 0.447 to 3.00 µg/kg in rice. Notably, tebuconazole and hexaconazole had consistently high contributions over the years. For adults and children, the average daily doses (ADDs) were 1.32 × 10-5 and 2.69 × 10-5 mg/kg/day, respectively, in the monitoring area and 4.25 × 10-6 and 6.42 × 10-6 mg/kg/day, respectively, in the control area. In the control area, rice and vegetables were the primary media for exposure to TFs in children and adults, collectively accounting for more than 94% of the total TF exposure. Conversely, indoor dust is identified as the main medium of TF exposure in children residing near the pesticide factory, representing approximately 40% of the total exposure. The risks of noncarcinogenic effects on children and adults in the monitoring area were significantly greater than those in the control area, being approximately ten times greater for children, warranting increased attention. The carcinogenic risk to human health is relatively safe.


Assuntos
Exposição Ambiental , Monitoramento Ambiental , Fungicidas Industriais , Triazóis , Triazóis/análise , China , Medição de Risco , Humanos , Fungicidas Industriais/análise , Exposição Ambiental/estatística & dados numéricos , Poeira/análise , Criança , Poluição do Ar em Ambientes Fechados/análise , Poluição do Ar em Ambientes Fechados/estatística & dados numéricos , Adulto , Poluentes Atmosféricos/análise
4.
Mediators Inflamm ; 2023: 8533476, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-39282247

RESUMO

Background: Head and neck squamous cell carcinoma (HNSCC) is a growing concern worldwide, due to its poor prognosis, low responsiveness to treatment, and drug resistance. Since immunotherapy effectively improves HNSCC patients' survival status, it is important to continuously explore new immune-related predictive factors to accurately predict the immune landscape and clinical outcomes of individuals suffering from HNSCC. Methods: The HNSCC transcriptome profiling of RNA-sequencing data was retrieved from TCGA database, and the microarray of GSE27020 was obtained from the GEO database for validation. The differentially expressed genes (DEGs) between HNSCC and normal samples were identified by multiple test corrections in TCGA database. The univariate and multivariate Cox analyses were performed to identify proper immune-related genes (IRGs) to construct a risk model. The Cox regression coefficient was employed for calculation of the risk score (RS) of IRG signature. The median value of RS was utilized as a basis to classify individuals with HNSCC into high- and low-risk groups. The Kaplan-Meier (K-M) survival analysis and receiver operating characteristic (ROC) curves were employed for the identification of the prognostic significance and precision of the IRG signature. The signature was also evaluated based on clinical variables, predictive nomogram, mutation analysis, infiltrating immune cells, immune-related pathways, and chemotherapeutic efficacy. The protein-protein interaction (PPI) network and functional enrichment pathway investigations were utilized to explore possible potential molecular mechanisms. Finally, the hub gene's differential mRNA expression levels were evaluated by means of the Gene Expression Profiling Interactive Analysis (GEPIA), and the Human Protein Atlas (HPA) was utilized for the validation of their translational levels. Results: Collectively, 1593 DEGs between HNSCC and normal samples were identified, of which 136 IRGs were differentially expressed. Then, the 136 immune-related DEGs were mostly enriched in the cytokine-related signaling pathways by GO and KEGG analyses. After that, a valuable signature based on seven genes (DKK1, GAST, IGHM, IL12RB2, SLURP1, STC2, and TNFRSF4) was designed. The HNSCC patients into the low-risk group and the high-risk group were divided by using the median RS; the HNSCC patients in the high-risk group had a worse survival than those in the low-risk group. The risk signature was verified to be an independent predictive marker for HNSCC patients. Meanwhile, the RS had the largest contribution to survival of these patients based on the predictive nomogram. In addition, the low-risk HNSCC patients exhibited significantly enriched immune cells, along with an association with high chemosensitivity. Conclusion: The constructed gene signature can independently function as a predictive indicator for the clinical features of HNSCC patients. The low-risk HNSCC subjects might benefit from immunotherapy and chemotherapy.


Assuntos
Neoplasias de Cabeça e Pescoço , Carcinoma de Células Escamosas de Cabeça e Pescoço , Humanos , Carcinoma de Células Escamosas de Cabeça e Pescoço/genética , Carcinoma de Células Escamosas de Cabeça e Pescoço/imunologia , Carcinoma de Células Escamosas de Cabeça e Pescoço/mortalidade , Prognóstico , Neoplasias de Cabeça e Pescoço/genética , Neoplasias de Cabeça e Pescoço/imunologia , Neoplasias de Cabeça e Pescoço/terapia , Neoplasias de Cabeça e Pescoço/mortalidade , Perfilação da Expressão Gênica , Resultado do Tratamento , Estimativa de Kaplan-Meier , Feminino , Curva ROC , Masculino , Regulação Neoplásica da Expressão Gênica , Modelos de Riscos Proporcionais , Pessoa de Meia-Idade , Nomogramas , Transcriptoma , Biomarcadores Tumorais/genética
5.
BMC Med ; 20(1): 454, 2022 11 23.
Artigo em Inglês | MEDLINE | ID: mdl-36424578

RESUMO

BACKGROUND: Previous studies have reported that maternal smoking during pregnancy and breastfeeding may affect the occurrence of hypertension, but whether early life factors modify the impact of the offspring's genetic risk on hypertension is still unknown. The aim of this study was to investigate the relationships among maternal smoking and breastfeeding with adult-onset hypertension and the modified impact of offspring genetic susceptibility. METHODS: This study included 437,185 participants from the UK Biobank who were initially free of hypertension and provided a prospective cohort of individuals aged 40 to 69 years. The association of maternal smoking during pregnancy and breastfeeding with hypertension was examined by using the Cox regression model. Then, a polygenic risk score (PRS) for hypertension was used to test the gene-environmental interaction on hypertension. RESULTS: During a median follow-up period of 8.7 years, a total of 68,148 cases of hypertension were identified in this study. The hazard ratios (HRs) and 95% confidence intervals (CIs) of hypertension for maternal smoking and breastfeeding were 1.11 (1.09, 1.13) and 0.96 (0.94, 0.98), respectively. However, no evidence of an interaction between maternal smoking and breastfeeding was observed. Across all levels of genetic risk, including high genetic risk, maternal smoking and nonbreastfeeding had higher hypertension hazards than nonmaternal smoking and breastfeeding, respectively. The adjusted HRs (95% CIs) of hypertension were 1.80 (1.73, 1.87) in those who had high genetic predisposition plus maternal smoking and 1.67 (1.60-1.74) in those with nonbreastfeeding and high genetic risk. There were significant additive interactions between maternal smoking or breastfeeding and genetic factors on the incidence of hypertension. CONCLUSIONS: Maternal smoking and nonbreastfeeding were associated with a higher risk of hypertension in adulthood and may attenuate the risk of hypertension related to genetic factors. These results suggested that adherence to nonmaternal smoking and breastfeeding was associated with a lower risk of hypertension among participants with all gradients of genetic risk.


Assuntos
Aleitamento Materno , Hipertensão , Adulto , Gravidez , Feminino , Humanos , Estudos Prospectivos , Fumar/efeitos adversos , Fumar/epidemiologia , Hipertensão/epidemiologia , Hipertensão/genética , Mães , Fatores de Risco , Predisposição Genética para Doença
6.
Ecotoxicol Environ Saf ; 241: 113754, 2022 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-35709674

RESUMO

Microplastics, a new type of ecological pollutant, have now become a major environmental concern worldwide. Polystyrene microplastics (PS), one of the most abundant form of microplastics, cause deleterious effects across species. Melatonin (MT), which is secreted by pineal gland, exhibits protective role against pollutant-induced damage. However, whether MT could ameliorate PS-induced neurodevelopmental toxicity remain unclear. In our study, zebrafish embryos were treated with PS (0.5, 25 mg/L) in the presence or absence of MT (1 µM) from 4 h post-fertilization (hpf) to 144 hpf. Locomotion behavior, oxidative stress, apoptosis, proliferation and development of caudal primary (Cap) motoneuron axon were analyzed. Gene expression was determined by qRT-PCR or whole-mount in situ hybridization. Results showed that PS exposure significantly reduced swimming speed of zebrafish larvae and induced excessive reactive oxygen species (ROS), apoptosis and aberrant proliferation. In addition, PS treatment markedly shortened the length of Cap motoneuron axons and decreased expression of neurodevelopment related genes. While, MT administration considerably rescued the neurodevelopmental toxicity of PS. Mechanistically, MT activated nrf2 (nuclear factor-E2-related factor 2) - isl2a (ISL LIM homeobox 2a) axis to antagonize the side effects of PS. In all, our findings suggest that PS exposure during early life lead to aberrant neurodevelopment of zebrafish, and MT might be a therapeutic option for protecting such disorder.


Assuntos
Melatonina , Microplásticos , Poliestirenos , Substâncias Protetoras , Poluentes Químicos da Água , Animais , Melatonina/metabolismo , Melatonina/farmacologia , Microplásticos/toxicidade , Fator 2 Relacionado a NF-E2/genética , Fator 2 Relacionado a NF-E2/metabolismo , Estresse Oxidativo , Plásticos/metabolismo , Poliestirenos/metabolismo , Poliestirenos/toxicidade , Substâncias Protetoras/farmacologia , Poluentes Químicos da Água/metabolismo , Poluentes Químicos da Água/toxicidade , Peixe-Zebra/metabolismo
7.
Genomics ; 112(6): 5275-5281, 2020 11.
Artigo em Inglês | MEDLINE | ID: mdl-32956844

RESUMO

OBJECTIVE: Oral squamous cell carcinoma (OSCC) is a common and rampant malignancy of the head and neck. However, its pathogenesis remains unclear. In this study, we have investigated the effects of circular RNA hsa_circ_009755 on proliferation, migration, invasion, and apoptosis in OSCC cells in vitro. METHOD: Eight pairs of OSCC and normal adjacent tissues were selected to detect the differential expression of circRNAs by high-throughput sequencing. circRNA hsa_circ_009755 expression was determined by quantitative real-time polymerase chain reaction in OSCC tissues and cell lines. CCK-8, wound healing, Transwell, and flow cytometry assays were used to determine OSCC cell proliferation, migration, invasion, and apoptosis, respectively. RESULT: The expression of hsa_circ_009755 was low in OSCC tissues and three OSCC cell lines. Silencing hsa_circ_009755 significantly enhanced the proliferation, migration, and invasion and suppressed the apoptosis of OSCC cells. CONCLUSION: Therefore, hsa_circ_009755 may be important in the tumorigenesis of OSCC.


Assuntos
Neoplasias Bucais/genética , Neoplasias Bucais/patologia , RNA Circular/fisiologia , Carcinoma de Células Escamosas de Cabeça e Pescoço/genética , Carcinoma de Células Escamosas de Cabeça e Pescoço/patologia , Apoptose , Movimento Celular , Proliferação de Células , Inativação Gênica , Humanos , MicroRNAs/metabolismo , Neoplasias Bucais/metabolismo , Invasividade Neoplásica , RNA Circular/genética , RNA Circular/metabolismo , Carcinoma de Células Escamosas de Cabeça e Pescoço/metabolismo , Carcinoma de Células Escamosas de Cabeça e Pescoço/secundário
8.
Exp Cell Res ; 375(2): 36-40, 2019 02 15.
Artigo em Inglês | MEDLINE | ID: mdl-30625304

RESUMO

The DNA polymerase δ catalytic subunit (PolD1) is a highly conserved protein with established functions in both the nucleus and the cytoplasm: whereas PolD1 participates in the replication and repair of nuclear DNA, it plays a role in the control of cytoplasmic microtubule growth by directly acting on microtubule-nucleator γ-tubulin ring complexes. Here, we show that PolD1 shuttles between the nucleus and the cytoplasm. PolD1 harbors two nuclear localization signals that mediate the active transport of PolD1 to the nucleus; conversely, PolD1 is exported from the nucleus by the exportin CRM1-dependent mechanism, a major nuclear-export pathway that mediates the export of various cargos. These findings suggest that the nucleocytoplasmic distribution of PolD1 is influenced by both the nuclear import and export activities of the protein.


Assuntos
Núcleo Celular/metabolismo , DNA Polimerase III/metabolismo , Sinais de Localização Nuclear , Transporte Ativo do Núcleo Celular , DNA Polimerase III/química , Células HeLa , Humanos
9.
J Cell Mol Med ; 23(4): 2645-2655, 2019 04.
Artigo em Inglês | MEDLINE | ID: mdl-30677230

RESUMO

Oral squamous cell carcinoma (OSCC) is an oral and maxillofacial malignancy that exhibits high incidence worldwide. In diverse human cancers, the long non-coding RNA (lncRNA) highly up-regulated in liver cancer (HULC) is aberrantly expressed, but how HULC affects OSCC development and progression has remained mostly unknown. We report that HULC was abnormally up-regulated in oral cancer tissues and OSCC cell lines, and that suppression of HULC expression in OSCC cells not only inhibited the proliferation, drug tolerance, migration and invasion of the cancer cells, but also increased their apoptosis rate. Notably, in a mouse xenograft model, HULC depletion reduced tumorigenicity and inhibited the epithelial-to-mesenchymal transition process. Collectively, our findings reveal a crucial role of the lncRNA HULC in regulating oral cancer carcinogenesis and tumour progression, and thus suggest that HULC could serve as a novel therapeutic target for OSCC.


Assuntos
Carcinogênese/genética , Carcinoma de Células Escamosas/genética , Transição Epitelial-Mesenquimal/genética , Regulação Neoplásica da Expressão Gênica , Neoplasias Bucais/genética , RNA Longo não Codificante/genética , Idoso , Animais , Antígenos CD/genética , Antígenos CD/metabolismo , Caderinas/genética , Caderinas/metabolismo , Carcinogênese/metabolismo , Carcinogênese/patologia , Carcinoma de Células Escamosas/metabolismo , Carcinoma de Células Escamosas/patologia , Linhagem Celular Tumoral , Movimento Celular , Proliferação de Células , Feminino , Humanos , Masculino , Camundongos , Camundongos Nus , Pessoa de Meia-Idade , Neoplasias Bucais/metabolismo , Neoplasias Bucais/patologia , Invasividade Neoplásica , Proteínas Proto-Oncogênicas c-bcl-2/genética , Proteínas Proto-Oncogênicas c-bcl-2/metabolismo , RNA Longo não Codificante/antagonistas & inibidores , RNA Longo não Codificante/metabolismo , RNA Interferente Pequeno/genética , RNA Interferente Pequeno/metabolismo , Carga Tumoral , Vimentina/genética , Vimentina/metabolismo , Ensaios Antitumorais Modelo de Xenoenxerto , Proteína X Associada a bcl-2/genética , Proteína X Associada a bcl-2/metabolismo
10.
J Cell Physiol ; 234(9): 15156-15166, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-30680715

RESUMO

Oral squamous cell carcinoma (OSCC), the most common oral cancer, damages oral epithelial cells after the accumulation of multiple genetic mutations. Although emerging evidence supports the key role of circular RNAs (circRNAs) in various malignancies, the clinical value and function of circRNAs in OSCC remain unclear. In this study, patients with OSCC (n = 8) and controls ( n = 8) were compared using high-throughput sequencing and microarray circRNA expression profiles. The circRNA hsa_circ_0007059 was downregulated in OSCC. Subsequently, hsa_circ_0007059 levels in OSCC tissues and cell lines were assessed by quantitative reverse-transcription chain reaction. Loss-of-function and gain-of-function experiments were performed to determine whether hsa_circ_0007059 affects malignant behavior in SCC15 and CAL27 cells. Importantly, hsa_circ_0007059 upregulation suppressed cell growth, migration, and invasion, facilitating apoptosis of these cells. Furthermore, nude mouse tumor formation was assessed to validate the tumor-suppressive role of hsa_circ_0007059 in vivo. Finally, hsa_circ_0007059 was determined to alter cell growth via AKT/mTOR signaling, representing a potential prognostic/therapeutic target for OSCC.

11.
J Transl Med ; 17(1): 76, 2019 03 11.
Artigo em Inglês | MEDLINE | ID: mdl-30857544

RESUMO

BACKGROUND: Oral squamous cell carcinoma (OSCC) is a common oral and maxillofacial malignant tumor with high rates of metastasis and mortality. Circular RNAs (circRNAs), a type of non-coding RNA, are involved in the development of a variety of tumors. The roles of circRNAs in OSCC are unclear; in this study, the correlation between the circRNA hsa_circ_0055538, previously identified by high-throughput sequencing, and the biological behavior of OSCC was evaluated. METHODS: circRNA expression was evaluated using patient tissue samples and various OSCC cell lines. The effects of overexpression and knockdown were evaluated by lentiviral infection and siRNA transfection of the SCC9 and CAL27 cell lines. Migration, invasion, apoptosis, and the expression of proteins in the p53 signaling pathway were evaluated. Infected cells were injected into nude mice to evaluate tumorigenesis. RESULTS: Low hsa_circ_0055538 expression levels were verified in tumor tissues and OSCC cell lines. Clinical data analysis showed that the expression level is related to the degree of tumor differentiation. Lentiviral infection and siRNA transfection of SCC9 and CAL27 cell lines revealed that changes in circRNA expression significantly affected the malignant biological behavior of OSCC cells. Importantly, nude mouse experiments showed that high expression of hsa_circ_0055538 inhibited tumor growth. Finally, hsa_circ_0055538 may affect the development of OSCC via the p53/Bcl-2/caspase signaling pathway. CONCLUSIONS: Our results indicated that hsa_circ_0055538 is involved in OSCC via the p53 signaling pathway and may be a diagnostic and/or prognostic marker as well as a therapeutic target.


Assuntos
Carcinoma de Células Escamosas/patologia , Caspases/metabolismo , Neoplasias Bucais/genética , Neoplasias Bucais/patologia , Proteínas Proto-Oncogênicas c-bcl-2/metabolismo , RNA Circular/metabolismo , Transdução de Sinais , Proteína Supressora de Tumor p53/metabolismo , Animais , Apoptose/genética , Carcinogênese/genética , Carcinogênese/patologia , Carcinoma de Células Escamosas/genética , Linhagem Celular Tumoral , Movimento Celular/genética , Proliferação de Células/genética , Regulação para Baixo/genética , Feminino , Regulação Neoplásica da Expressão Gênica , Humanos , Masculino , Camundongos Nus , Pessoa de Meia-Idade , Invasividade Neoplásica , RNA Circular/genética
12.
BMC Cancer ; 19(1): 400, 2019 Apr 29.
Artigo em Inglês | MEDLINE | ID: mdl-31035951

RESUMO

BACKGROUND: Oral squamous cell carcinoma (OSCC) is an oral and maxillofacial malignancy with a high incidence worldwide. Accumulating evidence indicates that circular RNAs (circRNAs) play a vital role in modulating tumor development. However, the mechanism of circRNA action in human OSCC remains largely unknown. METHODS: By using high-throughput transcriptome sequencing technology, we conducted a comprehensive study of circRNAs in human OSCC. The effect of circRNA hsa_circ_0005379 on OSCC tissues and cell lines was monitored by qRT-PCR, Transwell assay, flow cytometry, and western blot analysis. Xenograft mouse models were used to assess tumor growth and animal survival. RESULTS: We found that circRNA hsa_circ_0005379 expression is significantly lower in OSCC tissue compared to paired non-cancerous matched tissue and is associated with tumor size and differentiation. Overexpression of hsa_circ_0005379 effectively inhibits migration, invasion, and proliferation of OSCC cells in vitro and suppresses OSCC growth in nude mice in vivo. Mechanistic studies revealed that hsa_circ_0005379 may be involved in the regulation of the epidermal growth factor receptor (EGFR) pathway. Furthermore, we found that high expression of hsa_circ_0005379 could significantly enhance the sensitivity of OSCC to the cetuximab drug. CONCLUSIONS: Our findings provide evidence that hsa_circ_0005379 regulates OSCC malignancy and may be a new therapeutic target for OSCC treatment.


Assuntos
Carcinoma de Células Escamosas/genética , Regulação Neoplásica da Expressão Gênica , Neoplasias Bucais/genética , RNA/genética , Animais , Antineoplásicos Imunológicos/farmacologia , Carcinoma de Células Escamosas/metabolismo , Carcinoma de Células Escamosas/patologia , Linhagem Celular , Linhagem Celular Tumoral , Sobrevivência Celular/efeitos dos fármacos , Sobrevivência Celular/genética , Células Cultivadas , Cetuximab/farmacologia , Receptores ErbB/genética , Receptores ErbB/metabolismo , Feminino , Humanos , Masculino , Camundongos Endogâmicos BALB C , Camundongos Nus , Pessoa de Meia-Idade , Neoplasias Bucais/metabolismo , Neoplasias Bucais/patologia , RNA Circular , Transdução de Sinais/genética , Transplante Heterólogo , Carga Tumoral/genética
15.
Zhonghua Nan Ke Xue ; 21(5): 428-31, 2015 May.
Artigo em Chinês | MEDLINE | ID: mdl-26117941

RESUMO

OBJECTIVE: To investigate the pathogenesis and treatment of penile necrosis resulting from microwave diathermy following circumcision. METHODS: We retrospectively analyzed the clinical data about 9 cases of penile necrosis resulting from postoperative microwave diathermy following circumcision. The 9 males, aged 20 - 39 (mean 26) years, underwent traditional circumcision for redundant prepuce or phimosis in other hospitals, followed by microwave diathermy for 30 - 60 minutes daily, which resulted in penile necrosis. With no response to conservative therapy, the patients were referred to our hospital at 3 -30 days postoperatively. Of the 9 patients, 5 presented with dry gangrene and 4 with moist gangrene. Six of the patients underwent partial penectomy, including 1 that received penis lengthening.3 months later, while the other 3 underwent total penectomy for total penile necrosis followed by penile reconstruction 3 months later, with deep inferior epigastric perforator (DIEP) flaps and by implantation of the 12th costal cartilage in 2 cases and with epigastric groin island flaps and by urethroplasty in the other. RESULTS: The patients were followed up for 2 - 8 years, and all could urinate smoothly in the standing position. Of the 6 men treated by partial penectomy, 1 received penis lengthening and achieved a penile length of 7 cm and 5 had the remaining penile length of 3 -5 cm, 4 with erectile function and the other 2 capable of sexual intercourse. The 3 men treated by total penectomy achieved nearly normal external appearance of the penis, with a finalized length of (11.7 ± 1.3) cm, a circumference of (11.4 ± 2.1) cm, and a normal feel of the skin. Of the 3 cases of penile reconstruction, 2 achieved sufficient erectile hardness of the penis (grade 3) for sexual intercourse, while the other 1 remained impotent. CONCLUSION: Post-circumcision microwave diathermy may result in penile necrosis, for the management of which, early debridement is necessitated and penile lengthening or reconstruction can be performed according to the severity of the lesion and needs of the patient.


Assuntos
Circuncisão Masculina/métodos , Diatermia/efeitos adversos , Micro-Ondas/efeitos adversos , Adulto , Coito , Cartilagem Costal/transplante , Diatermia/métodos , Humanos , Masculino , Pênis/anormalidades , Pênis/cirurgia , Fimose/cirurgia , Período Pós-Operatório , Procedimentos de Cirurgia Plástica/métodos , Estudos Retrospectivos , Adulto Jovem
16.
J Hazard Mater ; 476: 135032, 2024 Sep 05.
Artigo em Inglês | MEDLINE | ID: mdl-38959826

RESUMO

There is limited information available on cardiovascular toxicity of 2-Aminobenzothiazole (NTH), a derivative of benzothiazole (BTH) commonly used in tire production, in aquatic organisms. In the present study, the zebrafish embryos were exposed to varying concentrations of NTH (0, 0.05, 0.5, and 5 mg/L) until adulthood and the potential cardiovascular toxicity was assessed. NTH exposure resulted in striking aberrations in cardiac development, including heart looping failure and interference with atrioventricular canal differentiation. RNA-sequencing analysis indicated that NTH causes oxidative damage to the heart via ferroptosis, leading to oxygen supply disruption, cardiac malformation, and ultimately, zebrafish death. Quantitative real-time polymerase chain reaction (qPCR) analysis demonstrated the dysregulation of genes associated with early heart development, contraction, and oxidative stress. Additionally, reactive oxygen species accumulation and glutathione/malondialdehyde levels changes suggested a potential link between cardiac developmental toxicity and oxidative stress. In adult zebrafish, NTH exposure led to ventricular enlargement, decreased heart rate, reduced blood flow, and prolonged RR, QRS, and QTc intervals. To the best of our knowledge, this study is the first to provide evidence of cardiac toxicity and the adverse effects of ontogenetic NTH exposure in zebrafish, revealing the underlying toxic mechanisms connected with oxidative stress damage. These findings may provide crucial insights into the environmental risks associated with NTH and other BTHs.


Assuntos
Benzotiazóis , Cardiotoxicidade , Embrião não Mamífero , Coração , Estresse Oxidativo , Peixe-Zebra , Animais , Estresse Oxidativo/efeitos dos fármacos , Cardiotoxicidade/etiologia , Benzotiazóis/toxicidade , Coração/efeitos dos fármacos , Embrião não Mamífero/efeitos dos fármacos , Espécies Reativas de Oxigênio/metabolismo , Poluentes Químicos da Água/toxicidade
17.
Sci Total Environ ; 947: 174431, 2024 Oct 15.
Artigo em Inglês | MEDLINE | ID: mdl-38960151

RESUMO

Polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) have attracted considerable attention owing to their environmental persistence, bioaccumulation, and high toxicity. This study aimed to investigate changes in serum metabolites following exposure to PCDD/Fs and to reveal a novel pathogenesis of PCDD/Fs. Serum samples were collected from 75 residents living near a municipal solid waste incinerator in China to analyse the relationship between PCDD/Fs and serum metabolic components. The serum level in the low-exposure group [19.07 (13.44-23.89) pg-TEQ/L] was significantly lower than that in the high-exposure group [115.60 (52.28-592.65) pg-TEQ/L]. Non-targeted metabolomic studies based on liquid chromatography-high resolution mass spectrometry have been applied to the metabolomic analysis of serum. Thirty-seven metabolites with significant differences among the different groups were identified as biomarkers. Pathway analysis revealed that high dioxin exposure perturbed various biological processes, including glycerol phospholipid metabolism and the interconversion of pentose and glucuronate. The results of a population health survey showed that the serum dioxin concentration in patients with diabetes was significantly higher than that in the control population. These findings suggest that dioxin exposure is associated with several potential adverse health risks, including inflammation, diabetes, and cardiovascular disease, through metabolic changes.


Assuntos
Dioxinas , Exposição Ambiental , Incineração , Dibenzodioxinas Policloradas , Humanos , China , Exposição Ambiental/estatística & dados numéricos , Dibenzodioxinas Policloradas/sangue , Dioxinas/sangue , Masculino , Adulto , Feminino , Pessoa de Meia-Idade , Dibenzofuranos Policlorados , Resíduos Sólidos , Biomarcadores/sangue
18.
BMC Urol ; 13: 68, 2013 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-24289138

RESUMO

BACKGROUND: Arteriovesical fistulas are extremely rare. Only eleven cases were previously reported in the literature. They can occur iatrogenically, traumatically or spontaneously. CASE PRESENTATION: We report an unusual case of a 62-year-old woman with arteriovesical fistula that developed fatal hematuria after transurethral electrocoagulation. Computed tomography (CT) and selective angiography revealed a pseudoaneurysm of the right superior vesical artery with arteriovesical fistula formation, which was managed by transarterial embolization. CONCLUSIONS: Contrast enhanced CT or CT angiography should be performed when a pulsatile hemorrhage is revealed during cystoscopy. Therapeutic vesical arterial embolization should be considered as a safe and effective procedure for arteriovesical fistulas. Transurethral electrocoagulation may cause severe hematuria for pulsatile bladder bleeding in patients with pelvic vascular malformation.


Assuntos
Fístula Artério-Arterial/terapia , Eletrocoagulação/efeitos adversos , Hematúria/diagnóstico , Hematúria/etiologia , Fístula da Bexiga Urinária/terapia , Idoso , Fístula Artério-Arterial/complicações , Evolução Fatal , Feminino , Hematúria/prevenção & controle , Humanos , Uretra , Fístula da Bexiga Urinária/complicações
19.
Front Pharmacol ; 14: 1119150, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36794275

RESUMO

Background: The treatment of hypertensive nephropathy has remained unchanged for many years. Salvianolate is the main active component extracted from Salvia Miltiorrhiza. The current studies seem to suggest that salvianolate has a certain therapeutic effect on hypertensive nephropathy. Objective: The purpose of this meta-analysis is to evaluate the effect and safety of salvianolate on hypertensive nephropathy under the condition of standardized use of valsartan. Methods: We conducted a systematic search (unlimited initial date to 22 October 2022) in PubMed, Web of Science, the Cochrane Library, Embase, China National Knowledge Infrastructure, Wanfang Data knowledge service platform, China Science and Technology Journal Database, China Biomedical Literature Service System. Searching for the study of salvianolate on hypertensive nephropathy. Two reviewers independently included the study that met the inclusion criteria, and extracted data, evaluated the quality of the study. We use RevMan5.4 and stata15 software for this meta-analysis. We use GRADEprofiler 3.2.2 software for evidence quality assessment. Results: This meta-analysis included seven studies (525 patients). Compared with the use of valsartan combined with conventional treatment, salvianolate combined with valsartan and conventional treatment can further improve the efficacy (RR = 1.28, 95%CI:1.17 to 1.39), reduce blood pressure [systolic blood pressure (MD = 8.98, 95%CI:-12.38 to -5.59); diastolic blood pressure (MD = 5.74, 95%CI:-7.20 to -4.29)], serum creatinine (MD = -17.32, 95%CI:-20.55 to -14.10), blood urea nitrogen (MD = -1.89, 95%CI:-3.76 to -0.01), urine microalbumin (MD = -23.90, 95%CI:-26.54 to -21.26), and urinary protein to creatinine ratio (MD = -1.92, 95%CI:-2.15 to -1.69), cystatin C (MD = -1.04, 95%CI: -1.63 to -0.45) and increase calcitonin gene-related peptide (MD = 18.68, 95%CI:12.89 to 24.46) without increasing adverse reactions (RR = 2.20, 95%CI:0.52 to 9.40). But it has no additional effect on endothelin-1 and malondialdehyde. The quality of evidence ranged from moderate to very low. Conclusion: This meta-analysis shows that the salvianolate can further improve renal function of hypertensive nephropathy patients based on valsartan was used. Therefore, salvianolate can be used as a clinical supplement for hypertensive nephropathy. However, the quality of the evidence is not high due to the uneven quality of the included studies and the insufficient sample size, we still need a lot of large sample size studies with more perfect design to confirm these results. Systematic Review Registration: https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42022373256, identifier CRD42022373256.

20.
Transl Cancer Res ; 12(10): 2875-2886, 2023 Oct 31.
Artigo em Inglês | MEDLINE | ID: mdl-37969381

RESUMO

Background: To identify differently expressed circular RNA (circRNA) in oral squamous cell carcinoma (OSCC) and adjacent normal tissue, construct a hsa_circ_0112879-related microRNAs (miRNAs) prognostic model, and discuss the circRNA as a biomarker for early diagnosis of OSCC. Methods: The expression of hsa_circ_0112879 in OSCC cell lines and tissues was detected by quantitative real-time polymerase chain reaction (qRT-PCR). A receiver operating characteristic (ROC) curve was plotted to estimate its clinical significance. The potential miRNA and messenger RNA (mRNA) binding to hsa_circ_009755 were predicted by R software edgeR package. Based on the median value of the risk score in the all-sample cohort, all the included patients with OSCC were divided into either high- or low-risk groups, and Kaplan-Meier analysis was performed. The ROC curve was used to verify the accuracy of the risk signature in predicting the prognosis of OSCC. By univariable Cox, least absolute shrinkage and selection operator (LASSO), and multivariable Cox analyses, we constructed a hsa_circ_0112879-related miRNAs risk model to forecast the prognosis of OSCC. Results: The expression of hsa_circ_0112879 was significantly downregulated in the OSCC tissues and cell lines. The expression level was statistically correlated with the pathological differentiation of OSCC tumors (P=0.0285). Furthermore, 141 differentially expressed hsa_circ_0112879-related miRNAs were obtained [|log2FC| >1, false discovery rate (FDR) <0.05], of which 70 miRNAs were up-regulated in OSCC tissues, whereas 71 miRNAs were down-regulated in OSCC tissues. The area under the ROC curve (AUC) at 1-, 3-, and 5-year in the all-sample cohort was 0.591, 0.689, and 0.618, respectively. The toll-like receptor signaling pathway, Janus tyrosine kinase-signal transducer and activator of transcription (JAK-STAT) signaling pathway, nucleotide-binding and oligomerization domain (NOD)-like receptor signaling pathway, and T-cell receptor (TCR) signaling pathway were mainly enriched in the high-risk group. Conclusions: The model and nomogram constructed herein has the ability to discriminate the prognosis of OSCC patients. Hsa_circ_0112879 may serve as a novel biomarker in the diagnosis and prognosis of OSCC.

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