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| 1 | Extremely high prevalence of Helicobacter pylori infection in Bhutan显示文摘AIM: To revealed the prevalence of Helicobacter pylori (H. pylori ) infection in the Bhutanese population. METHODS: We recruited a total of 372 volunteers (214 females and 158 males; mean age of 39.6 ± 14.9 years) from three Bhutanese cities (Thimphu, Punaka, and Wangdue). The status of H. pylori infection was determined based on five different tests: the rapid urease test (CLO test), culture, histology, immunohistochemistry (IHC), and serum anti H. pylori -antibody. RESULTS: The serological test showed a significantly higher positive rate compared with the CLO test, culture, histology and IHC (P < 0.001, P < 0.001, P=0.01, and P=0.01, respectively). When the subjects were considered to be H. pylori positive in the case of at least one test showing a positive result, the overall prevalence of H. pylori infection in Bhutan was 73.4%. The prevalence of H. pylori infection significantly decreased with age (P < 0.01). The prevalence of H. pylori infection was lower in Thimphu than in Punakha and Wangdue (P=0.001 and 0.06, respectively). The prevalence of H. pylori infection was significantly higher in patients with peptic ulcers than in those with gastritis (91.4% vs 71.3%, P=0.003). CONCLUSION: The high incidence of gastric cancer in Bhutan may be attributed to the high prevalence of H. pylori infection. | Ratha-korn Vilaichone Varocha Mahachai Seiji Shiota Tomohisa Uchida Thawee Ratanachu-ek Lotay Tshering Nguyen Lam Tung Toshio Fujioka Masatsugu Moriyama Yoshio Yamaoka | 2013 | World Journal of Gastroenterology2013，19，18： | 8 |
| 2 | Antibiotics resistance rate of Helicobacter pylori in Bhutan显示文摘AIM:To survey the antibiotic resistance pattern of Helicobacter pylori(H.pylori)strains isolated from Bhutanese population.METHODS:We isolated 111 H.pylori strains from the gastric mucosa of H.pylori-infected patients in Bhutan in 2010.The Epsilometer test was used to determine the minimum inhibitory concentrations(MICs)of amoxicillin(AMX),clarithromycin(CLR),metronidazole(MNZ),levofloxacin(LVX),ciprofloxacin(CIP),and tetracycline(TET).RESULTS:Nineteen of the isolated H.pylori strains were susceptible to all antibiotics tested.The isolated strains showed the highest rate of antibiotic resistance to MNZ(92/111,82.9%).Among the 92 MNZresistant strains,74 strains(80.4%)showed high-level resistance(MIC≥256 g/mL).Three strains were resistance to LVX(2.7%).These strains were also resistance to CIP.None of the strains showed resistance to CLR,AMX and TET.CONCLUSION:CLR-based triple therapy is a more effective treatment approach over MNZ-based triple therapy for H.pylori infection in Bhutan. | Ratha-korn Vilaichone Yoshio Yamaoka Seiji Shiota Thawee Ratanachu-ek Lotay Tshering Tomohisa Uchida Toshio Fujioka Varocha Mahachai | 2013 | World Journal of Gastroenterology2013，19，33： | 6 |
| 3 | Seroprevalence of Helicobacter pylori infection and gastric mucosal atrophy in Bhutan, a country with a high prevalence of gastric cancer显示文摘 | Seiji Shiota Varocha Mahachai Ratha-korn Vilaichone Thawee Ratanachu-ek Lotay Tshering Tomohisa Uchida Osamu Matsunari Yoshio Yamaoka | 2013 | Journal of Medical Microbiology2013，，1： | 2 |
| 4 | Fastand easymuhi-residuemethod employing acetonitrile extraction/partitioning and'dispersive solid-phase extraction'for the determination of pesticideresidues in produce显示文摘 | Anastassiades M Le|lotay SJ Stajnbaher D etal | 2003 | JAOAC Int2003，86，2： | 1 |
| 5 | Seroprevalence of Helicobacter pylori infection and gastric mucosal atrophy in Bhutan, a country with a high prevalence of gastric cancer显示文摘 | Seiji Shiota Varocha Mahachai Ratha-korn Vilaichone Thawee Ratanachu-ek Lotay Tshering Tomohisa Uchida Osamu Matsunari Yoshio Yamaoka | 2013 | Journal of Medical Microbiology (Pt )2013，，10： | 1 |
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