Publications by authors named "Ahmed Shalabi"
Article Synopsis
- The study examines the effectiveness of sequential drug treatments for ulcerative colitis (UC), specifically comparing the use of vedolizumab (VDZ) and anti-TNF therapies as second-line treatments.
- Researchers analyzed data from patients who switched treatments between May 2013 and August 2020, looking at various health outcomes over a 52-week period.
- Results indicated that patients receiving VDZ after anti-TNF had significantly better treatment persistence, colectomy-free survival, and clinical remission compared to those receiving anti-TNF after VDZ, suggesting a favorable effect of the treatment order on patient outcomes.
Article Synopsis
- The study explores a semi-automatic image recognition technology for measuring tumor and healthy tissue volumes in Wilms' tumors using CT images from 2000 to 2018.
- A total of 98 patients were reviewed, with 32 selected for detailed analysis, demonstrating significant responses to neoadjuvant chemotherapy and surgical management.
- Results indicate that volumetric analysis can effectively quantify changes in tumor size and surrounding tissue, potentially aiding in surgical planning and assessing long-term renal function post-treatment.
Middle aortic syndrome (MAS) is a rare vascular disease occurring in pediatric patients. MAS describes narrowing of the abdominal aorta, often referred to as abdominal coarctation. Extra-aortic vessels are commonly involved, including the renal and mesenteric arteries.
View Article and Find Full Text PDFCurrent therapy for carotid stenosis mainly includes carotid endarterectomy and endovascular stenting, which may incur procedure-related cerebral ischemia. Several methods have been employed for monitoring cerebral ischemia during surgery, such as awake neurocognitive assessment, electroencephalography, evoked potentials, transcranial Doppler, carotid stump pressure, and near infrared spectroscopy. However, there is no consensus on the gold standard or the method that is superior to others at present.
View Article and Find Full Text PDFPurpose: The purpose of this study was to evaluate cryptoglandular fistula surgery outcomes in men with common types of fistulae.
Method: A database review identified study patients. Exclusion criteria included history of previous fistula, previous anorectal surgery, inflammatory bowel disease, pelvic radiation, complex fistula, age <21 years, and absence of follow-up.
The twofold potential of F+ color centers at the low coordinated surfaces of SrO for providing tunable laser activity and adsorption properties for atomic halogens (F, Cl and Br) has been investigated using ab initio electronic structure calculations. SrO clusters of variable sizes were embedded in simulated Coulomb fields that closely approximate the Madelung fields of the host surfaces and the nearest neighbor ions to F+ were allowed to relax to equilibrium. Based on Stokes shifted optical transition bands and horizontal shifts along the configuration coordinate diagrams, the F+ laser activity was found to decrease as the coordination number of the surface ions decreases from 5 (flat) to 4 (edge) to 3 (corner).
View Article and Find Full Text PDF