Project description:Comparative genomic hybridization between Escherichia coli strains to determine core and pan genome content of clinical and environmental isolates
2012-08-30 | GSE39667 | GEO
Project description:Cefiderocol Resistance among Escherichia coli in the United Arab Emirates
Project description:Comparative genomic hybridization between Escherichia coli strains to determine core and pan genome content of clinical and environmental isolates Two color experiment, Escherichia coli Sakai (reference), clinical and environmental Escherichia coli strains (testers): At least two replicates including a single dye swap for each reference-tester comparison
Project description:The heterogeneity in symptomatology and phenotypic profile attributable to COVID-19 is widely unknown. For the first time, our study provides the unique advantage of obtaining samples from the Middle Eastern population, an underrepresented region in genetic studies, and explore new genotypes in this population that will yield to novel genetic association. Specifically, we studied 646 patients in the United Arab Emirates. We describe strong association signals from genes on chromosomes 2, 3, 5, 11 and 13, which carry genes that are expressed in the lung, have been associated with tumour progression, emphysema, airway obstruction, and surface tension within the lung. Identifying genetic variants associated to COVID-19 susceptibility and severity may uncover novel biological insights into disease pathogenesis and identify mechanistic targets for therapeutic and vaccine development.
2022-06-03 | GSE184150 | GEO
Project description:Antimicrobial resistance, virulence determinants, and genomic characterization of Escherichia coli from retail eggshells in the United Arab Emirates
| PRJNA1467888 | ENA
Project description:E. coli from imported frozen chicken in the United Arab Emirates
Project description:Escherichia coli bloodstream infections are common and associated with high mortality. A key feature of E. coli is the lipopolysaccharide (LPS) O-antigen, which contributes to immune evasion during invasive infection. We analyzed serial E. coli isolates from patients with relapsed bacteremia and identified frequent disruption of O-antigen synthesis due to mutations in wbbL, resulting in a rough LPS (R-LPS) phenotype. E. coli with rough LPS isolates were more serum sensitive and less pathogenic in mice. Despite this apparent attenuation, 11 of 66 (18%) E. coli sequence type 131 bloodstream isolates in our cohort lacked O-antigen and were associated with significantly worse clinical outcomes, including septic shock and mortality. Using a recurrent bacteremia model, we show that R-LPS isolates partially evade protective immunity generated against smooth-LPS E. coli, highlighting the importance of host immune context in invasive disease.
