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Distribution of Open Reading Frames of Plasticity Region of Strain J99 in Helicobacter pylori Strains Isolated from Gastric Carcinoma and Gastritis Patients in Costa Rica
The plasticity region of Helicobacter pylori strain J99 is a large chromosomal segment containing 33 strain-specific open reading frames (ORFs) with characteristics of a pathogenicity island. To study the diversity of the ...
The cag Pathogenicity Island of Helicobacter pylori is Disrupted in the Majority of Patient Isolates from Different Human Populations
(Journal of Clinical Microbiology, 42(11), p. 5302-5308, 2004-11)
The cag pathogenicity island (cag-PAI) is one of the major virulence determinants of Helicobacter pylori. The chromosomal integrity of this island or the lack thereof is speculated to play an important role in the progress ...
Composition and Gene Expression of the cag Pathogenicity Island in Helicobacter pylori Strains Isolated from Gastric Carcinoma and Gastritis Patients in Costa Rica
(Infection Immunity 69 (3) 1902-1908, 2001-03)
The composition and in vitro expression of the cag pathogenicity island genes in a group of Helicobacter pylori strains obtained from patients suffering from chronic gastritis-associated dyspepsia (n = 26) or gastric ...
Association of serum pepsinogen with atrophic body gastritis in Costa Rica
(Clinical and Experimental Medicine 6 p.72-78, 2006-05-26)
Abstract Individuals with atrophic gastritis (AG), especially atrophic body gastritis (ABG), are at increased risk of developing gastric cancer. Serum concentrations of pepsinogens (PG) have been proposed as markers for ...