ANÁLISE DO POLIMORFISMO DO GENE GSTT1 EM AMOSTRAS DE PTERÍGIO DE PACIENTES DE GOIÂNIA - GOIÁS - BRASIL.

Abstract

Pterygium is an inflammatory and degenerative ocular surface disease in which the conjunctiva on the cornea grows forming a fibrous tissue in the shape of a triangle. The disorder may be characterized by cell proliferation, inflammatory processes, fibrosis, angiogenesis and destruction of the extracellular matrix. It is erroneously confused the cataract, and the anomaly is considered as a degenerative eye disease. The disease displays similar features to those of tumors in local invasion, metaplasia of epithelial cells, the presence of oncogenic viruses (Human Papilloma Virus - HPV), inactivation of tumor suppressor gene (such as the well-known p53) and loss of heterozygosity. This study aims to compare the frequency of the GSTT1 genotypes in relation to pterygium. The genotypic profile of the GSTT1 null polymorphism in Goiânia showed no statistically significant difference when comparing the frequency of the null genotype in the control and experimental groups. The null genotype is more frequent in the population studied. The GSTT1 genotype is not related to the risk factors analyzed: gender, ethnicity, family cases, occupational exposure, smoking, hypertension and Diabetes.