Plant Biology Department, Faculty of Sciences, University of Damascus, Syria
Molecular Biology and Biotechnology Department, Atomic Energy Commission, Damascus, Syria
Plant Biology Department, Faculty of Sciences, University of Damascus, Damascus, Syria
Document Type : Research Paper
Shigella is an intracellular bacterium can infect both human and animal. Its species especially Shigella dysenteriae cause shigellosis worldwide, with 165 million cases of severe bloody diarrhea and mucoid feces. The aim of this study was to find a rapid, sensitive and specific method for screening Shigella in raw bovine contaminated milk. For this goal, 70 samples of milk collected in sterile containers for isolating of Shigella and culturing it on selective media to identify and characterize its morphology, biochemical and molecular characteristics. This study was compared between three different DNA extraction techniques for polymerase chain reaction (direct DNA extraction using a kit, alkaline DNA extraction, and filtrated milk). Our results showed that PCR was able to detect Shigella in 15 out of 15 cases after the milk samples filtered. In other words, the filter technique can be used to detect Shigella in contaminated milk.
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