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Open AccessArticle

Precancerous gastric conditions in high Helicobacter pylori prevalence areas: comparison between Eastern European (Lithuanian, Latvian) and Asian (Taiwanese) patients

1
Kaunas University of Medicine, Kaunas, Lithuania
2
Faculty of Medicine, University of Latvia, Digestive Diseases Center, Hospital LINEZERS, Riga, Latvia
3
Digestive Diseases Center GASTRO, Riga, Latvia
4
Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
*
Author to whom correspondence should be addressed.
Medicina 2007, 43(8), 623; https://doi.org/10.3390/medicina43080080
Received: 2 May 2007 / Accepted: 6 August 2007 / Published: 11 August 2007
The aim of the study was to compare the prevalence and severity of precancerous condition – gastric atrophy and intestinal metaplasia (IM) between Eastern European (Lithuania and Latvia) and Asian (Taiwan) countries in population older than 55 years.
Methods
. Patients aged 55 years and older, referred for upper endoscopy due to dyspeptic symptoms, were included in the study. Gastric biopsies were histological investigated according modified Sydney classification. Helicobacter pylori (H. pylori) was detected if any two of three methods (urease test, histology, and serology) were positive.
Results. Overall 322 patients included: 52 from Taiwan (TW), 171 from Latvia (LV) and 99 from Lithuania (LT). There were 227 (70%) females and 95 (30%) males. The mean age of TW patients was significantly lower (61.0±5.8 years), than of LV (68.1±7.3 years) and LT (66.5±7.5 years) patients. H. pylori was established in 224 (69.6%) patients. H. pylori positivity was established in 43 (82.7%) TW patients, in 112 (65.5%) LV patients, and in 69 (69.7%) LT patients (P>0.05). In H. pylori-infected patients, any atrophy either in the corpus or in the antrum of the stomach was detected in 26 (60.5%) TW patients, in 40 (35.7%) LV patients, and in 36 (52.2%) LT patients (between TW and LV patients P<0.005). Severe atrophy (grade 2 or 3) detected in 8 (18.6%) TW patients, in 17 (15.2%) LV patients, and in 18 (26.1%) LT patients (P>0.05). Intestinal metaplasia was detected in 22 (51.2%) TW patients, in 37 (33.0%) LV patients and in 31 (44.9%) LT patients among countries (P>0.05). There were no significant differences in proportions of different degrees of both atrophy and intestinal metaplasia among countries. Intestinal metaplasia was found in 79 (77.5%) of 102 patients with any degree of atrophy and in 11 (9.0%) of 122 patients without atrophy (P<0.0001). We found strong statistically significant correlations between atrophy and intestinal metaplasia in antrum (r=0.89), P<0.01, and corpus (r= 0.73), P<0.01.
Conclusions
. The prevalence of H. pylori in the elderly population is still high in LT, LV, and TW. There are no significant differences in prevalence of gastric atrophy and intestinal metaplasia among TW, LT, and LV. There is a strong correlation between gastric atrophy and intestinal metaplasia.
Keywords: Helicobacter pylori; gastritis; atrophy; intestinal metaplasia Helicobacter pylori; gastritis; atrophy; intestinal metaplasia
MDPI and ACS Style

Jonaitis, L.; Ivanauskas, A.; Jančiauskas, D.; Funka, K.; Sudraba, A.; Tolmanis, I.; Krams, A.; Stirna, D.; Vanags, A.; Kupčinskas, L.; Leja, M.; Lin, J.-T. Precancerous gastric conditions in high Helicobacter pylori prevalence areas: comparison between Eastern European (Lithuanian, Latvian) and Asian (Taiwanese) patients. Medicina 2007, 43, 623.

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