Investigation of Efflux-Mediated Tetracycline Resistance in Shigella Isolates Using the Inhibitor and Real Time Polymerase Chain Reaction Method

investigation of efflux-mediated tetracycline resistance in shigella isolates using the inhibitor and real time polymerase chain reaction method

background: shigella spp. are gram negative bacteria, which are of global public health importance. the growing of multidrug-resistant shigella isolates are a major problemaround the world. methods: overall, 50 isolates of shigella spp. from children diarrheic stools were studied. the isolates were identified and confirmed using biochemical, serological and molecular methods (ipah, wbgz and rfc...

Detection of Nocardia Asteroides Complex in Clinical Isolates by Real-Time Polymerase Chain Reaction

Background and Aims: Nocardia asteroides complex is the most common cause of infectious diseases due to nocardiosis. Interspecies differentiation of Nocardia genera is essential for prognosis and timely proper treatment, as well as for epidemiological studies. Since each genus has its own antibiotic resistance, precise careful diagnosis is of prime importance. As compared to biochemical and phe...

Detection of tetracycline resistance genes in bacteria isolated from fish farms using polymerase chain reaction

Five common tetracycline resistance genes tet(A), tet(B), tet(M), tet(O) and tet(S) were studied by polymerase chain reaction in 100 bacteria isolated from Iranian fish farms. In the antibiogram test most of the bacteria were either intermediately or completely resistant to tetracycline. Nine isolates out of 46 Aeromonas spp. contained eithe...

Quantitative Real-time Polymerase Chain Reaction (qRT-PCR). Fatemeh Mehrpooyan*

Polymerase chain reaction method for the rapid detection of virulent Shigella spp.

Bacillary dysentery, or shigellosis, is a disease of humans in which the colonic epithelium is invaded by bacteria and subjected to inflammatory destruction. The aim of this study was to develop a polymerase chain reaction(PCR) test for detection of virulent Shigella spp.. For this purpose, the primers were designed to amplify a 526-bp internal region of the Shigella spp. icsA gene, which encod...

Development of New Modified Simple Polymerase Chain Reaction and Real-time Polymerase Chain Reaction for the Identification of Iranian Brucella abortus Strains

Brucellosis is primarily a worldwide zoonotic disease caused by Brucella species. The genus Brucella contains highly infectious species that are classified as biological threat agents. In this regard, the identification of Brucella can be a time-consuming and labor-intensive process posing a real risk of laboratory-acquired infection to the laboratory staff. This stud...