Publications by authors named "Maryam K Alshammari"
() is involved in several hospital and community-acquired infections. The prevalence of -producing-carbapenemase (KPC) resistance genes rapidly increases and threatens public health worldwide. This study aimed to assess the antibiotic resistance level of isolates from Makkah Province, Saudi Arabia, during the Islamic 'Umrah' ritual and to identify the plasmid types, presence of genes associated with carbapenem hydrolyzing enzymes, and virulence factors.
View Article and Find Full Text PDFAnthracene is a low molecular weight polynuclear aromatic hydrocarbons (PAHs) being identified as a precedence toxic contaminant in the ecosystem. Thus, the present work was designed to evaluate anthracene biodegradation efficiency by selected marine bacteria. From the marine isolates, the most effective anthracene biodegrading strain was identified as Sphingomonas sp.
View Article and Find Full Text PDFArticle Synopsis
- The study focused on identifying bacteria that produce biofilms in dental caries, highlighting the strain DC-17, which showed strong biofilm-forming abilities and antibiotic resistance.
- DC-17 synthesized a significant amount of extracellular polymeric substances (EPS), primarily made up of proteins (1.928 mg/mL), carbohydrates (162.3 mg/L), and DNA (4.95 µg/mL), which are essential for biofilm structure and function.
- Factors like temperature, pH, and sugar concentration affected biofilm production, with optimal conditions found at alkaline pH, 40°C, and 8% sucrose, while the biofilm formed was notably resistant to various antibiotics, particularly pen
The present study aimed to determine the degradation and transformation of three-ring PAHs phenanthrene and anthracene by Cryptococcus sp. MR22 and Halomonas sp. BR04 under halophilic conditions.
View Article and Find Full Text PDFBackground: Biofilm forming ability of Pseudomonas aeruginosa make them vulnerable, because it makes them recalcitrant against various antibiotics. Quorum sensing (QS) is cell density based signaling that helps in bacterial cell-cell communication, which regulated various virulence factors such as pigment and biofilm formation that contribute in the establishment of chronic infections. The interruption of QS is one of the effective approach to control various virulence factors.
View Article and Find Full Text PDFThis study was designed to determine the incidence of Clostridium perfringens and their toxin genes in children with autism spectrum disorder (ASD), and determine the antimicrobial susceptibility of C. perfringens isolates. A hundred and fourteen fecal samples were obtained from children aged 3-12 years old (57 samples from ASD children and 57 from healthy controls).
View Article and Find Full Text PDF