RESUMO
Colorectal cancer (CRC) is the second leading cause of cancer-related mortality in developing countries. Tripartite motif-59 (TRIM59) a member of the TRIM ubiquitin ligase family, is a surface molecule that regulates biological processes such as cell proliferation, apoptosis, and tumorigenesis. Previous studies reported that TRIM59 expression was upregulated in human CRC, however, the expression pattern and role of TRIM59 in benign colorectal lesions remain unclear. Sixty patients diagnosed with CRC and 60 patients with benign lesions (Crohn's disease, ulcerative colitis, adenoma, and familial adenomatous polyposis) were recruited to the present study. TRIM59 gene expression was assessed by real-time quantitative polymerase chain reaction. Expression of TRIM59 protein and p-AKT were determined using, enzyme-linked immunoassay while p53 expression was detected by immunohistochemistry. Antioxidant/oxidant role of glutathione (GSH)/malondialdehyde (MDA) were evaluated by colorimetric methods in all of the studied groups. Our results showed upregulated expressions of TRIM59 gene and protein levels in CRC tissues and benign colonic lesions compared to nontumor tissues. Their levels were higher in inflammatory compared to noninflammatory bowel lesions. There were significant interrelations among TRIM59 gene expression, protein levels, tumor, node, metastasis staging, and the presence of metastasis (p < 0.0001). Receiver-operator characteristic curve analyses showed that at the cutoff point of 2.5 TRIM59 mRNA expression can discriminate between CRC cases and benign bowel group (area under the curve [AUC]: 0.639, sensitivity: 86.7%, specificity: 41.7%), and between CRC and controls (AUC: 0.962, sensitivity: 90%, specificity: 91.7%). TRIM59 could be a potential biomarker in the early detection, diagnosis, and treatment of benign colonic lesions and CRC.
Assuntos
Neoplasias Colorretais , Metaloproteínas , Linhagem Celular Tumoral , Proliferação de Células/genética , Neoplasias Colorretais/diagnóstico , Neoplasias Colorretais/genética , Regulação Neoplásica da Expressão Gênica , Humanos , Peptídeos e Proteínas de Sinalização Intracelular/genética , Proteínas de Membrana/genética , Metaloproteínas/genética , Metaloproteínas/metabolismo , Proteínas com Motivo Tripartido/genética , Proteínas com Motivo Tripartido/metabolismoRESUMO
Bronchial asthma is a common chronic inflammatory disease with high prevalence and morbidity, particularly in school-aged children. Decoy receptor 3 (DcR3) is a soluble decoy receptor that belongs to the tumor necrosis factor receptor superfamily and has been reported to be elevated in several allergic and inflammatory diseases. This study was designed to determine the role of DcR3 in pediatric asthma. The serum DcR3 levels were analyzed in 85 subjects (60 pediatric patients with bronchial asthma and 25 age- and sex-matched healthy control children) using the enzyme-linked immunosorbent assay technique. Patients with asthma had higher serum DcR3 levels than healthy control subjects (p = 0.007). In the atopic group of patients with asthma, the serum DcR3 levels were inversely correlated with the asthma control test score (R = - 0.392, p = 0.039). Overall, DcR3 could be a promising biomarker of atopic asthma, specifically in pediatric patients.
Assuntos
Asma/sangue , Membro 6b de Receptores do Fator de Necrose Tumoral/sangue , Asma/imunologia , Biomarcadores/sangue , Criança , Ensaio de Imunoadsorção Enzimática , Feminino , Humanos , Masculino , Membro 6b de Receptores do Fator de Necrose Tumoral/imunologiaRESUMO
BACKGROUND/AIMS: Whereas colorectal cancer (CRC) is the third most common cancer worldwide, klotho gene has been reported as a tumor suppressor gene. Therefore, the aim of this study was to investigate the association between klotho (rs1207568 and rs564481) variants and CRC in Egyptian patients. MATERIALS AND METHODS: A case-control study comprising 100 patients with CRC and 100 age- and sex-matched healthy controls was conducted. Genotyping of klotho was performed by polymerase chain reaction with confronting two-pair primers. RESULTS: The frequencies of the A allele of rs1207568 and the AC haplotype were significantly higher in patients with CRC than in the controls (p=0.019 and p=0.005, respectively). CONCLUSION: We propose that klotho (rs1207568 and rs564481) variants play a significant role in colorectal carcinogenesis and that the klotho protein could be a target for oncotherapy.
Assuntos
Neoplasias Colorretais/genética , Predisposição Genética para Doença/genética , Variação Genética , Glucuronidase/genética , Adulto , Estudos de Casos e Controles , Neoplasias Colorretais/epidemiologia , Egito/epidemiologia , Feminino , Frequência do Gene , Predisposição Genética para Doença/epidemiologia , Técnicas de Genotipagem , Haplótipos , Humanos , Proteínas Klotho , Masculino , Pessoa de Meia-Idade , Fatores de RiscoRESUMO
We investigated the association of the Osteopontin (OPN) (rs9138 and rs1126616) polymorphisms with colorectal cancer (CRC). One hundred CRC patients and 112 healthy individuals were subjected to OPN (rs9138 and rs1126616) genotyping and measurement of OPN protein plasma level. The C allele of OPN rs1126616 and the CC haplotype were significantly higher in CRC patient (p = 0.036, 0.003, respectively). In females, the C allele of OPN rs9318 (A/C) polymorphism was significantly associated with increased CRC risk (p = 0.036). The plasma OPN level >104.35 ng/mL was significantly associated with CRC. Our findings suggest a significant role played by OPN (rs9138 and rs1126616) in colorectal carcinogenesis.