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Iranian Journal of Microbiology، جلد ۱۴، شماره ۶، صفحات ۸۹۱-۹۰۰
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عنوان انگلیسی Effect of dilution factor on the isolation of Helicobacter pylori from municipal wastewater using culture technique
چکیده انگلیسی مقاله Background and Objectives: Isolating Helicobacter pylori (H. pylori) from wastewater and culturing it using a conventional method has always been a controversial issue because the bacterium converts into a coccoid form when exposed to an unfavourable environment like wastewater. To clarify the cultivability behaviour of the bacterium in fresh wastewater samples, the effect of municipal wastewater dilation on the cultivation of the bacterium using a conventional method was examined. Materials and Methods: Several dilutions of wastewater samples were inoculated with fresh H. pylori suspension (with McFarland's dilution 0.5) to examine the dilution effect of wastewater on the bacterium isolation. Results: The H. pylori growth was found to be possible for a dilution factor from 1/106 to 1/107 of raw wastewater. In higher dilution factors the growth of fungi was dominant and could prevent the isolation of the bacterium. Conclusion: The optimized technique could be applied in future studies for increasing the chance of H. pylori isolation from fresh wastewater environments.
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نویسندگان مقاله | Mehri Solaimany Aminabad
Center for Water Quality Research (CWQR), Institute for Environmental Research (IER), Tehran University of Medical Sciences (TUMS), Tehran, Iran


| Mahdi Hadi
Center for Water Quality Research (CWQR), Institute for Environmental Research (IER), Tehran University of Medical Sciences (TUMS), Tehran, Iran


| Seyedeh Zohreh Mirbagheri
Pediatric Infections Research Center, Research Institute for Children‘s Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran


| Alireza Mesdaghinia
Center for Water Quality Research (CWQR), Institute for Environmental Research (IER), Tehran University of Medical Sciences (TUMS), Tehran, Iran


| Ronak Bakhtiari
Department of Pathobiology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran


| Masoud Alebouyeh
Pediatric Infections Research Center, Research Institute for Children‘s Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran


| Shahrokh Nazmara
Center for Water Quality Research (CWQR), Institute for Environmental Research (IER), Tehran University of Medical Sciences (TUMS), Tehran, Iran
نشانی اینترنتی https://ijm.tums.ac.ir/index.php/ijm/article/view/3304
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