Answers are grounded in this paper and cite their sources.
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.
No takes yet. Share an insight, caveat, or question.
Queiroz et al. (1998) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: