COVID-19 associated Mucormycosis among ICU patients: risk factors, control, and challenges.

The severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) pandemic is still difficult to be controlled. The spread of this virus and the emergence of new variants are considered a great challenge worldwide. Disturbance in infection control guidelines implementation, use of steroids, antibiotics, hospital crowdedness, and repeated use of oxygen masks during the management of critically ill COVID-19 patients lead to an increase in the rate of opportunistic infections.

Effect of Titanium Dioxide Nanoparticles on the Expression of Efflux Pump and Quorum-Sensing Genes in MDR Isolates.

Most of the infections caused by multi-drug resistant (MDR) strains are extremely difficult to be treated with conventional antibiotics. Biofilm formation and efflux pumps are recognized as the major antibiotic resistance mechanisms in MDR . Biofilm formation by depends mainly on the cell-to-cell communication quorum-sensing (QS) systems.

Comparative Study of Antibacterial Effects of Titanium Dioxide Nanoparticles Alone and in Combination with Antibiotics on MDR Strains.

Introduction: The efficacy of several antimicrobial agents has been hindered due to the increasing frequency of multidrug-resistant (MDR) strains. So, the need for new antibacterial drugs or drug combinations is urgent. Recently, desirable antibacterial effects were reported for many metals nanoparticles such as TiO nanoparticles (TDNs).

Endovascular management of nonvariceal upper gastrointestinal hemorrhage.

Upper gastrointestinal bleeding (UGIB) remains a frequent presentation in the emergency department. There are several causes of UGIB, which can be generally classified into variceal and nonvariceal bleeding. Although most cases of nonvariceal UGIB spontaneously resolve or respond to medical management and/or endoscopic treatment, transcatheter arterial embolization (TAE) remains an important available tool in the emergency evaluation and management of nonvariceal UGIB.