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Keywords
(9)
Genetic Relationship
Molecular Characterization
Randomly Amplified Polymorphic Dna
South India
Vibrio Cholerae
Cholera Toxin
Cholera Toxin B
enterobacterial repetitive intergenic consensus
Tandem Repeat
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Molecular characterization reveals involvement of altered el tor biotype Vibrio cholerae O1 strains in cholera outbreak at Hyderabad, India
Molecular characterization reveals involvement of altered el tor biotype Vibrio cholerae O1 strains in cholera outbreak at Hyderabad, India,10.1007/s1
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Molecular characterization reveals involvement of altered el tor biotype Vibrio cholerae O1 strains in cholera outbreak at Hyderabad, India
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Ajay Kumar God
,
Meenu Jain
,
Pramod Kumar
,
Pennagaram Sarguna
,
Meera Bai
,
Neha Ghosh
,
Natrajan Gopalan
Thirty-four
Vibrio cholerae
isolates collected from a cholera outbreak in Hyderabad,
South India
were found to belong to serogroup Ol biotype El Tor serotype Ogawa. The genotype of all the isolates was confirmed by PCR assays. All the isolates were found PCR positive for ctxAB, ompW, rflOl, rtxC, and tcpA genes. All the isolates but one harboured rstR El Tor allele. However, one isolate carried both rstR EL Tor as well as rstR Classical alleles.
Cholera toxin
(ctxB) genotyping of the isolates confirmed the presence of altered
cholera toxin B
of classical biotype in all the isolates. All the isolates except VCH35 harboured an RS1-CTX prophage array on the large chromosome. The isolate VCH35 contained a
tandem repeat
of classical CTX prophage on the small chromosome. The clonal relationship among the V. cholerae isolates as carried out by
enterobacterial repetitive intergenic consensus
sequences PCR, BOX PCR and randomly amplified polymorphic DNA, uniformly showed a
genetic relationship
among the outbreak isolates. The results of this study suggest that altered El Tor biotype V. cholerae with the classical
cholera toxin
gene are involved in cholera outbreaks in India.
Journal:
Journal of Microbiology - J MICROBIOL
, vol. 49, no. 2, pp. 280-284, 2011
DOI:
10.1007/s12275-011-0317-9
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References
(25)
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(
Citations: 15
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Journal:
Environmental Microbiology - ENVIRON MICROBIOL
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(
Citations: 2
)
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http://academic.research.microsoft.com/io.ashx?type=5&id=37782751&selfId1=0&selfId2=0&maxNumber=12&query=
Journal:
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, vol. 59, no. 7, pp. 763-769, 2010
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(
Citations: 38
)
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(
Citations: 10
)
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,
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Journal:
Journal of Infection - J INFECTION
, vol. 57, no. 3, pp. 280-281, 2008
Molecular characterization of Vibrio cholerae outbreak strains with altered El Tor biotype from southern India
(
Citations: 3
)
A. K. Goel
,
M. Jain
,
P. Kumar
,
S. C. Jiang
Journal:
World Journal of Microbiology & Biotechnology - WORLD J MICROBIOL BIOTECHNOL
, vol. 26, no. 2, pp. 281-287, 2010