Paper Information

Journal:   BIOLOGY JOURNAL   SUMMER 2009 , Volume 4 , Number 2; Page(s) 51 To 56.
 
Paper: 

ASSESSMENT OF HELICOBACTER PYLORI COCCOID FORMS BY FLOW CYTOMETRY

 
 
Author(s):  HONARMAND JAHROMI S.*, SARAF ABOLFATAH, SIYAVASHI FARIDEH
 
* ISLAMIC AZAD UNIVERSITY, VARAMIN BRANCH
 
Abstract: 

Background: Flow cytometry is a rapid, sensitive, and reliable method for determination of bacterial viability. In this investigation for the first time the capability of flow cytometry to detect Helicobacter pylori viable cells in both forms of spiral and coccoid was assayed. Viable bacteria stained with Rhodamin 123 and analyzed with laser beam of 488nm.In positive control that consisted of live bacteria, the rate of rh 123 absorption was at highest, but negative control that consisted of dead bacteria, the rate of Rh 123 absorption was at lowest absorption. This method showed that non-culturable coccoid forms of H.
pylori, which could resist environmental stresses, were alive. Thus might be responsible for bacterial transmission and failure in disease treatment. Due to simplicity, reliability, and sensitivity of flow cytometry, this method is preferred to other expensive and no reliable methods such as autoradiography, PCR and Electron microscopy used for assessment viability.

 
Keyword(s): HELICOBACTER PYLORI, FLOW CYTOMETRY, BACTERIAL VIABILITY
 
References: 
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