ABSTRACT
OBJECTIVE: The oral and oropharyngeal squamous cell carcinoma (OOSCC) accounts for 90-95% of tumours in the oral cavity. Single nucleotide polymorphism (SNP) in the coding region of PON1, tumour necrosis factor-alpha (TNF-α) and transforming growth factor-beta (TGF-ß) have been associated with to development of different cancers. Our aim was to investigate the prognostic value of PON1 (rs854560 and rs662), TNF-α (rs1800629 and rs361525) and TGF-ß (rs1800469) SNPs in OOSCC. MATERIALS AND METHODS: We genotyped 163 OOSCC patients and 146 patients from group of control for PON1 (rs854560 and rs662), TNF-α (rs1800629 and rs361525) and TGF-ß (rs1800469) SNPs by real-time polymerase chain reaction (PCR). RESULTS: TNF-α (rs1800629) GG genotype was significantly more frequent in intraoral lesions and clinical stages III and IV, while the polymorphic AA genotype in lip lesion and clinical stages I and II. Moreover, TGF-ß (rs1800469) AG and AA genotypes were significantly more frequent in larger tumours (T3 e T4). TNF-α (rs1800629) AG genotype had poor survival and patients carrying the PON1 (rs662) TT genotype tended to poor survival. CONCLUSIONS: Results suggest that the rs1800629 and rs1800469 could exert influence in the more aggressive behaviour of OOSCC and the genotypes AG of rs1800629, and TT of rs662 could be markers with prognostic value in OOSCC.
Subject(s)
Head and Neck Neoplasms , Tumor Necrosis Factor-alpha , Aryldialkylphosphatase/genetics , Case-Control Studies , Genetic Predisposition to Disease , Genotype , Humans , Polymorphism, Single Nucleotide , Prognosis , Squamous Cell Carcinoma of Head and Neck , Transforming Growth Factor beta , Tumor Necrosis Factor-alpha/geneticsABSTRACT
PURPOSE: The aim of this study was to evaluate the population of CD8+ and natural killer (NK) cells in samples of oral (OSCC) and oropharyngeal (OPSCC) squamous cell carcinoma. PATIENTS AND METHODS: Fifty-four cases squamous cell carcinoma (42 OSCC and 12 OPSCC) were immunohistochemically treated by CD8 and CD57 monoclonal antibodies. It was evaluated the relationship of CD8+ and NK cells with tumor size, lymph node metastasis (LNM), clinical staging (CS), overall survival (OS) and disease-free survival (DFS). RESULTS: Only CD8 was higher expressed in both tumors T1 and T2 than T3 and T4, as well as in tumours without LNM and with CS II or III (P < 0.05). There was no association with OS and DFS of both biomarkers. CONCLUSIONS: These findings suggest that the differential CD8+ cells infiltration in OSCC and OPSCC might reflect a distinctive tumor microenvironment with a favorable local cytotoxic immune response against neoplastic cells.
