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Int J Cancer. 1998 Oct 5;78(2):135-9.

cagA-positive Helicobacter pylori and risk for developing gastric carcinoma in Brazil.

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1
Laboratory of Research in Bacteriology, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil. dqueiroz@medicina.ufmg.br

Abstract

To evaluate a possible association between infection with cag A-positive strains and gastric carcinoma increased risk we studied 119 Helicobacter pylori-positive patients with gastric carcinoma and 119 matched controls. The presence of cag A gene was investigated by PCR in H. pylori isolates and in gastric biopsy specimens. A significant association was found between cag A-positive status and distal gastric carcinoma for both the intestinal and diffuse types of tumor for both males and females. On the other hand, no association was observed between cag A-positive status and proximal gastric carcinoma.

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