| seroprevalence of helicobacter pylori in chile: vegetables may serve as one route of transmission. | helicobacter pylori infection is very common in chilean adults, but the age-related prevalence, risk factors for infection, and mode of transmission in chilean children are unknown. an elisa was used to test for h. pylori antibodies in 1815 chileans < 35 years of age. seropositivity was > 60% in lower socioeconomic groups. h. pylori seropositivity correlated with increased age, low socioeconomic status, and consumption of uncooked vegetables by use of a logistic regression analysis. risk factors ... | 1993 | 8515115 |
| helicobacter pylori vaca s1a and s1b alleles from clinical isolates from different regions of chile show a distinct geographic distribution. | to establish the most common vaca alleles in helicobacter pylori (h pylori) strains isolated from chilean patients and its relationship with gastritis and gastroduodenal ulcers. | 2005 | 16419167 |
| helicobacter pylori gastritis in children is associated with a regulatory t-cell response. | helicobacter pylori infection in children infrequently causes gastroduodenal mucosal ulceration. because h pylori induces t-cell dependent gastric inflammation in adults and t regulatory (treg) cells suppress t-cell-dependent pathology, we evaluated gastric histopathology and treg cell responses in h pylori-infected children and adults. | 2008 | 18242215 |
| tetracycline resistance in chilean clinical isolates of helicobacter pylori. | since high-level tetracycline resistance in helicobacter pylori has been associated with a aga926-928-->ttc substitution in the 16s rrna genes rrna/b, the aim of the study was to screen for tetracycline resistance in h. pylori clinical isolates obtained from santiago, chile by using a recently reported molecular assay. | 2010 | 20035020 |