HIGHLIGHTS Mutational analysis of antibiotic resistant genes E. coli in UTI Patients. These were detected by PCR and sequenced using NGS. isolates positive for GyrA gene, GyrB tetB tetR gene. The novel mutation was gyrB gene at codon554.

Stenotrophomonas maltophilia isolates have been recovered from various clinical samples, including the respiratory tract of cystic fibrosis (CF) patients, but this organism is also widespread in nature. Previously it has been shown that there is a considerable genomic diversity within S. maltophilia. The aims of our study were to determine the taxonomic resolution of restriction fragment length...

A total of 74 phenotypically identified presumptive motile Aeromonas isolates recovered from septicaemic freshwater ornamental fish in Sri Lanka were genetically characterized by sequencing of rpoD and gyrB genes. rpoD/gyrB phylogeny confirmed only 53 isolates as Aeromonas, among which A. veronii was the predominant species (79.2%), followed by A. hydrophila (7.5%), A. caviae (5.7%), A. jandaei...

gyrB fragments (about 1.2 kb) of 9 Vibrio alginolyticus strains were sequenced, and their phylogenetic relationship with other closely related Vibrio species was analyzed. All the V. alginolyticus strains grouped into one strongly supported cluster in the phylogenetic tree. There were 54 base variations among the 1167 bp mutual gyrB regions of 11 V. alginolyticus strains; all the V. alginolytic...

BACKGROUND A progressive frequency of resistance to fluoroquinolones is observed among Gram-negative bacilli. AIM To investigate the mechanism of resistance to fluoroquinolones mediated by mutations affecting gyrA and gyrB genes in strains of Gram negative bacüli isolated from CMean hospitals. MATERIAL AND METHOD Minimal inhibitory concentration of fluoroquinolones was determined in 91 rand...

The polymerase chain reaction–restriction fragment length polymorphism (PCR-RFLP) experiment has the characteristics of low-cost, rapidity, simplicity, convenience, high sensitivity and specificity; thus, many small medium laboratories use it to perform all kinds single nucleotide polymorphisms (SNPs) genotyping works, as a molecular biotechnology for disease-related analysis. However, lack ava...

As 16S rRNA sequence analysis has proven inadequate for the differentiation of Bacillus cereus from closely related species, we employed the gyrase B gene (gyrB) as a molecular diagnostic marker. The gyrB genes of B. cereus JCM 2152(T), Bacillus thuringiensis IAM 12077(T), Bacillus mycoides ATCC 6462(T), and Bacillus anthracis Pasteur #2H were cloned and sequenced. Oligonucleotide PCR primer se...

Calreticulin (CALR) mutations are included in the WHO diagnostic criteria of Myeloproliferative Neoplasm (MPN). Presence CALR mutation, aids their diagnosis by excluding reactive causes. There several molecular techniques to detect mutations; however, these require advanced equipment and technical expertise. An in-house “polymerase chain reaction-restriction fragment length polymorphism (PCR- R...

The conventional methods for identifying mycobacterial species are based on their phenotypic characterization. Since some problematic species are slow growers, their taxonomy takes several weeks or months to identify. The ribosomal DNA (rDNA) sequence-based identification strategy has been adopted to solve this problem. More recently, the gyrB sequences have been shown to be useful phylogenetic...