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Petrovsky National Research Centre of Surgery, Abrikosovsky per. 2, 119991 Moscow, Russia.
Bilio-biliary anastomosis (BBA) is a critical surgical procedure that is performed with the objective of restoring bile duct continuity. This procedure is often required in cases where there has been an injury to the extrahepatic bile ducts or during liver transplantation. Despite advances in surgical techniques, the healing of BBA remains a significant challenge, with complications such as stricture formation and leakage affecting patient outcomes.
View Article and Find Full Text PDFComparison of Drug Delivery Systems with Different Types of Nanoparticles in Terms of Cellular Uptake and Responses in Human Endothelial Cells, Pericytes, and Astrocytes.
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Department of Histology and Embryology, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Istanbul 34098, Turkey.
: The key components of the blood-brain barrier (BBB) are endothelial cells, pericytes, astrocytes, and the capillary basement membrane. The BBB serves as the main barrier for drug delivery to the brain and is the most restrictive endothelial barrier in the body. Nearly all large therapeutic molecules and over 90% of small-molecule drugs cannot cross the BBB.
View Article and Find Full Text PDFImaging pathology in archived cornea with Fuchs' endothelial corneal dystrophy including tissue reprocessing for volume electron microscopy.
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Structural Biophysics Research Group, School of Optometry & Vision Sciences, Cardiff University, Cardiff, Wales, UK.
Fuchs' endothelial corneal dystrophy (FECD) is a common sight-threatening condition characterised by pathological changes in the posterior cornea. Here we report observations by light, transmission and volume scanning electron microscopy on changes in the endothelium and matrix associated with the characteristic deformations of Descemet's membrane, termed guttae. Specimens were archived full-thickness human corneal tissue, removed during graft surgery, that had been fixed, stained and embedded by conventional processing methods for examination by transmission electron microscopy more than 40-years previously.
View Article and Find Full Text PDFEndothelial Response to Blood-Brain Barrier Disruption in the Human Brain.
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Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University, Chicago, United States of America.
Cerebral endothelial cell (EC) injury and blood-brain barrier (BBB) permeability contribute to neuronal injury in acute neurological disease states. Preclinical experiments have used animal models to study this phenomenon, yet the response of human cerebral ECs to BBB disruption remains unclear. In our Phase 1 clinical trial (NCT04528680), we used low-intensity pulsed ultrasound with microbubbles (LIPU/MB) to induce transient BBB disruption of peri-tumoral brain in patients with recurrent glioblastoma.
View Article and Find Full Text PDFUltrastructural imaging biomarkers in diabetic macular edema: A major review.
Indian J Ophthalmol
January 2025
Department of Vitreoretina, Aravind Eye Hospital, Madurai, India.
Diabetic macular edema (DME) is a vision-threatening complication of diabetic retinopathy and causes significant morbidity in patients. Anti-vascular endothelial growth factor (VEGF) agents are the mainstay of treatment for DME, with steroid implants being used for the treatment of anti-VEGF resistant eyes. Over the years, several classification systems have been devised to describe the patterns of DME using optical coherence tomography (OCT).
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