Análise de polimorfismos em tumores gliais humanos / Polymorphisms Analysis in Human Glial Tumors

AUTOR(ES)
DATA DE PUBLICAÇÃO

2011

RESUMO

The Central nervous system tumors represent about 2% of all cancers. Although the incidence of CNS tumors is small compared with other cancers, these tumors are among the most serious human malignancies, because they affect the body responsible for coordination and integration of all organic activities. Gliomas are the most common tumors of the CNS. Despite remarkable progress in characterizing the molecular pathogenesis of gliomas, these tumors remain incurable and, in most cases, refractory to treatment, due to its molecular heterogeneity. The appearance of these tumors occurs from the accumulation of genetic changes in cells. To understand the molecular mechanism of tumor formation and progression is essential to identify genes that accumulate these changes. A single base polymorphism (SNP Single Nucleotide Polymorphism) is generally defined as a stable replacement of only one base in the DNA molecule often greater than 1% in at least one population SNPs are recognized as important tools in human genetics and medical and have been widely used in genetic association studies of various complex diseases, such as: cardiovascular, psychiatric and autoimmune diseases, obesity, osteoporosis, diabetes and cancer. Thereby, the objective of this study was to analyze the polymorphisms between cases and control the intention to identify associations of these genotypes in susceptibility to tumors. The technique used for the analysis of polymorphisms were PCR-RFLP where we observe differences in genotype between patients and controls in the EGF +61, GSTP-1 Ile105Val, XRCC1 Arg 194 Trp, Pro 206 Pro, Arg 280 His, Arg 399 Gln, Gln 632 Gln, XRCC2 Arg 188 His, XRCC3 Thr 241 Met and XRCC4 G1394T, where the variants EGF G61, Trp194, val105, Pro206, His280, Gln632, His188, Met241 and XRCC4 T1394 were observed more frequently among patients with gliomas. Thus, these variants can be important factors of susceptibility to the tumor development.

ASSUNTO(S)

astrocitomas astrocytomas glioblastoma glioblastomas polimorfismo polymorphisms

ACESSO AO ARTIGO

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