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Archives of Clinical Microbiology

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Genetic diversity of Iranian isolates of Burkholderia mallei by PFGE and PCR-MLVA

EuroSciCon Conference on Virology and Infectious Diseases
April 22-23, 2019 | Athens, Greece

Nader Mosavari, Shojaat Dashtipoor and Keyvan Tadayon

Razi Vaccine and Serum research Institute, Iran

Scientific Tracks Abstracts: Arch Clin Microbiol

Abstract:

Glanders is a contagious and fatal zoonotic disease seen more often in equines. Causative agent of the disease is Burkholderia mallei. In last couple of years, researchers have been looking for raising awareness of the epidemiology of the disease by using modern and sophisticated molecular biology techniques.In order to analyze genetic diversity in Iranian isolates of B. mallei, five wild isolates (Tiger, Semirum, Kordan, Oshnavieh and Tehran) and one product strain (B. mallei 325) were comparatively examined by PFGE and PCR-MLVA. For MLVA two variable number of tandem repeats (VNTR) loci of VNTR1217 and VNTR13 were employed. The amplification products of MLVA PCRs were sequenced to guaranty accuracy of sizing and nucleotide structure. Consequently, in PFGE three profiles were detected with the first specific to B. mallei 325 and the second represented by B. mallei Semirum. The other three strains shared the third type. The PFGE pattern of the 325 strain was characteristically different from those of the Iranian isolates. In MLVA, at VNTR13 three alleles were detected where B. mallei 325 appeared to be clearly different from other four examined strains. Furthermore, at VNTR1217 two allels were observed leading to a total of four combinational VNTR profiles between the five strains. Findings of this study back the assumption that if an appropriate panel of VNTR loci are sleceted, MLVA typing can provide the capability required for epidemiologic investigations. This is a much needed requirement specifically in the Iranian environment where mini outbreaks of glanders take place every year.

Biography :

Nader Mosavari is the Head of Tuberculosis and Glanders Department in Razi Vaccine & Serum Research Institute. His research interest belongs to Burkholderia mallei and Microbiology.

E-mail: [email protected]