Survival of Helicobacter pylori in well water

被引:10
作者
Beneduce, L
Tarantino, D
Spano, G
Libergoli, M
Labonia, M
Massa, S
机构
[1] Univ Foggia, Ist Prod & Preparaz Alimentari, I-71100 Foggia, Italy
[2] Casa Sollievo Sofferenza, I-71013 San Giovanni Rotondo, FG, Italy
关键词
Helicobacter pylori; survival; water;
D O I
10.1023/A:1025196414067
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
The mortality of a clinical Helicobacter pylori strain was assessed by inoculating it in untreated well water, filtered well water, and autoclaved well water. Two different temperatures (5 and 25degreesC) were used during the experimental period. Because Escherichia coli is commonly used as indicator of faecal pollution of water, we compared the survival of H. pylori using E. coli as indicator of its persistence. H. pylori was not culturable 48 h after inoculation, whereas the population of E. coli, monitored at the same temperature, decreased slowly, especially in filtered water. In untreated water, both H. pylori and E. coli survived less well than in filtered and autoclaved water. In general the survival of H. pylori and E. coli was better in filtered water than in autoclaved water and the ability of H. pylori to survive several days in water at 5degreesC is reported, supporting the observation that H. pylori survives better at 5degreesC than at higher temperature. This suggests a possible faecal-oral transmission of H. pylori in the presence of a contaminated water.
引用
收藏
页码:505 / 508
页数:4
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