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• W1873804394 abstract "This study assessed the prevalence of Helicobacter pylori in symptomatic Bulgarian adults by means of culture, Gram's stain and an in-house rapid urease test (RUT), and also assessed the H. pylori density by culture. In total, 1441 non-treated and 270 treated patients were evaluated. Most non-treated patients with ulcers (87.7%), gastric malignancy (79.2%) and other gastroduodenal diseases (73.4%) were H. pylori-positive. Among non-treated and treated patients, 75.3% and 54.8%, respectively, of elderly patients, and 78.3% and 56.1%, respectively, of other adults were H. pylori-positive. Two (0.1%) non-treated adults were Helicobacter heilmannii-positive. The accuracy of direct Gram's stain and the in-house RUT were 74.8% and 64.2% in non-treated patients, and 73.7% and 63.0% in treated patients, respectively. Culture was highly accurate (>95%) in both groups. Older age decreased the sensitivity of the RUT in non-treated patients by 10.7% and that of all tests in treated patients by 6.9-8.1%. Incubation for 11 days was required for the growth of 2% and 4% of the strains from treated patients on selective and non-selective medium, respectively. There were no differences in isolation rates between positive fresh (74.2%) and frozen (75.2%) specimens. In non-treated adults, a high H. pylori density (growth in all quadrants of the plates) was more common (43.1%) in ulcer patients than in other patients (25.4%). In conclusion, H. pylori infection was common in Bulgarian patients, and at a high density in >40% of ulcer patients, while H. heilmannii infection was uncommon. Culture provided a highly accurate diagnostic approach. Stomach biopsies from non-treated patients can be frozen for several days. The benefit of reporting H. pylori density, as determined by culture, requires further evaluation." @default.
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• W1873804394 date "2007-09-01" @default.
• W1873804394 modified "2023-09-23" @default.
• W1873804394 title "Detection of Helicobacter pylori infection in symptomatic Bulgarian adults" @default.
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• W1873804394 doi "https://doi.org/10.1111/j.1469-0691.2007.01770.x" @default.
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