Third ventriculostomy is the preferred treatment for obstructive hydrocephalus, but the biomechanics of brain tissue damage caused by fiber endoscopes remains unclear. In this study, brain tissue material parameters were tested based on the Ogden model to simulate needle puncture mechanics, and replicated the entire fiber endoscope advancement process during third ventriculostomy. It was found that a smaller diameter fiber endoscope, a perpendicular puncture angle, and a faster puncture speed would decrease the damage of brain tissue caused by the fiber endoscope. This study provides valuable insights for optimizing the instrumentation and surgical process of third ventriculostomy.
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http://dx.doi.org/10.1080/10255842.2023.2262661 | DOI Listing |
J Tissue Eng
January 2025
Developmental and Cellular Biology, Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, Esch-sur-Alzette, Luxembourg.
Growing evidence indicates that type 2 diabetes (T2D) is associated with an increased risk of developing Parkinson's disease (PD) through shared disease mechanisms. Studies show that insulin resistance, which is the driving pathophysiological mechanism of T2D plays a major role in neurodegeneration by impairing neuronal functionality, metabolism and survival. To investigate insulin resistance caused pathological changes in the human midbrain, which could predispose a healthy midbrain to PD development, we exposed iPSC-derived human midbrain organoids from healthy individuals to either high insulin concentration, promoting insulin resistance, or to more physiological insulin concentration restoring insulin signalling function.
View Article and Find Full Text PDFJ Tissue Eng
January 2025
Department of Surgery, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
Mural cells are essential for maintaining the proper functions of microvasculatures. However, a key challenge of microvascular tissue engineering is identifying a cellular source for mural cells. We showed that , circulating fibrocytes (CFs) can (1) shear and stabilize the microvasculatures formed by vascular endothelial cells (VECs) in a collagen gel, (2) form gap junctions with VECs and (3) induce basement membrane formation.
View Article and Find Full Text PDFEnviron Epigenet
December 2024
Institute of Clinical Science B, Royal Victoria Hospital, Centre for Public Health, Queens' University Belfast, Grosvenor Rd, Belfast BT12 6BA, United Kingdom.
The increasing prevalence of neurodegenerative diseases poses a significant public health challenge, prompting a growing focus on addressing modifiable risk factors of disease (e.g. physical inactivity, mental illness, and air pollution).
View Article and Find Full Text PDFFront Physiol
January 2025
Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, United Kingdom.
Introduction: Chronic fetal hypoxia is commonly associated with fetal growth restriction and can predispose to respiratory disease at birth and in later life. Antenatal antioxidant treatment has been investigated to overcome the effects of oxidative stress to improve respiratory outcomes. We aimed to determine if the effects of chronic fetal hypoxia and antenatal antioxidant administration persist in the lung in early adulthood.
View Article and Find Full Text PDFSubst Abuse Rehabil
January 2025
Department of Medical Laboratory Science, Faculty of Basic Medical Sciences, College of Health Sciences, Niger Delta University Wilberforce Island Bayelsa State, Amassoma, Nigeria.
Background: Datura metel is reported to induce hallucinations and mental disorders.
Objective: This study investigates the neurotoxic effects of stramonium hydroethanolic root extract on the hippocampus and cerebral cortex of adult rats using biochemical, histological and immunohistochemical techniques.
Methodology: Twenty five adult rats were assigned to 5 groups (n = 5 each).
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