Universidad Peruana Cayetano Heredia

An assessment of drinking water contamination with Helicobacter pylori in Lima, Peru

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dc.contributor.author Boehnke, Kevin F.
dc.contributor.author Brewster, Rebecca K.
dc.contributor.author Sánchez, Brisa N.
dc.contributor.author Valdivieso, Manuel
dc.contributor.author Bussalleu Rivera, Alejandro Joaquin
dc.contributor.author Guevara, Magaly
dc.contributor.author Gonzales Saenz, Claudia
dc.contributor.author Osorio Alva, Soledad
dc.contributor.author Gil, Elena
dc.contributor.author Xi, Chuanwu
dc.date.accessioned 2018-11-30T02:09:29Z
dc.date.available 2018-11-30T02:09:29Z
dc.date.issued 2018
dc.identifier.uri https://hdl.handle.net/20.500.12866/3996
dc.description.abstract BACKGROUND: Helicobacter pylori is a gut bacterium that is the primary cause of gastric cancer. H. pylori infection has been consistently associated with lack of access to sanitation and clean drinking water. In this study, we conducted time-series sampling of drinking water in Lima, Peru, to examine trends of H. pylori contamination and other water characteristics. MATERIALS AND METHODS: Drinking water samples were collected from a single faucet in Lima's Lince district 5 days per week from June 2015 to May 2016, and pH, temperature, free available chlorine, and conductivity were measured. Quantities of H. pylori in all water samples were measured using quantitative polymerase chain reaction. Relationships between the presence/absence and quantity of H. pylori and water characteristics in the 2015-2016 period were examined using regression methods accounting for the time-series design. RESULTS: Forty-nine of 241 (20.3%) of drinking water samples were contaminated with H. pylori. Statistical analyses identified no associations between sampling date and the likelihood of contamination with H. pylori. Statistically significant relationships were found between lower temperatures and a lower likelihood of the presence of H. pylori (P < .05), as well as between higher pH and higher quantities of H. pylori (P < .05). CONCLUSIONS: This study has provided evidence of the presence of H. pylori DNA in the drinking water of a single drinking water faucet in the Lince district of Lima. However, no seasonal trends were observed. Further studies are needed to determine the presence of H. pylori in other drinking water sources in other districts in Lima, as well as to determine the viability of H. pylori in these water sources. Such studies would potentially allow for better understanding and estimates of the risk of infection due to exposure to H. pylori in drinking water. en_US
dc.language.iso eng
dc.publisher Wiley
dc.relation.ispartofseries Helicobacter
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
dc.subject Lima en_US
dc.subject Peru en_US
dc.subject Drinking Water en_US
dc.subject Helicobacter pylori en_US
dc.subject time series en_US
dc.subject water en_US
dc.subject Water Supply en_US
dc.title An assessment of drinking water contamination with Helicobacter pylori in Lima, Peru en_US
dc.type info:eu-repo/semantics/article
dc.identifier.doi https://doi.org/10.1111/hel.12462
dc.subject.ocde https://purl.org/pe-repo/ocde/ford#3.02.19
dc.subject.ocde https://purl.org/pe-repo/ocde/ford#3.03.08
dc.relation.issn 1523-5378


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