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Iranian Journal of Pathology، جلد ۱۵، شماره ۴، صفحات ۳۲۰-۳۲۵
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عنوان انگلیسی Genetic Diversity of ctxB Gene Among Classical O1 and El Tor Strains of Vibrio cholerae using High-Resolution Melting Curve Analysis
چکیده انگلیسی مقاله Background & Objective:  Vibrio cholerae is a natural inhabitant of the environment and causes severe diarrhea ailments (cholera) that affects thousands of people each year worldwide. The most important virulence factors of this pathogen are cholera toxin (cholera toxin CT) and Type IV pili (toxin co-regulated pili TCP), which are encoded within the genome of the filamentous bacteriophage CTXφ. In the present study, according to researchers’ report on genotypic variations of cholera toxin, we evaluated the sequence of ctxB subunit obtained from 100 strains of patients infected with cholera in Iran.
Methods:  The evaluation of genotype variations of cholera toxin was made by high-resolution melting curve analysis illustrating a single nucleotide change. Then, ctxB gene sequencing was performed. Through this analysis and the sequencing process, two standard samples were studied.
Results:  Using serologic tests, all the strains analyzed in this study were identified to be in O1 serotype. However, there have been differences in sequences of ctxB as some were similar to V. cholerae O1 biovar El Tor str. N16961 while others were similar to the genotype of V. cholerae ATCC 14035. We did not observe any particular pattern within the process of mutation.
Conclusion:  The analysis of the new samples of ctxB showed that they were potentially different. It seems that these complicated species were affected by a new genetic exchange of El Tor and classic genotypes.
کلیدواژه‌های انگلیسی مقاله ctxB,Vibrio cholerae,High-resolution melt analysis,Genotyping Techniques
نویسندگان مقاله Mahdieh Mahboobi |
Applied Microbiology Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran

Reza Mirnejad |
Molecular Biology Research Center Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran

Hamid Sedighian |
Applied Microbiology Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran

Vahhab Piranfar |
Research and Development Department, Farname Inc, Thornhill, Canada

Abbas Ali Imani Fooladi |
Applied Microbiology Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran

نشانی اینترنتی https://ijp.iranpath.org/article_43605_2d91f7412fc010515c8f2ea38e3ef7cc.pdf
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