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The glomerulus is a critical filtration unit in the kidney, yet its complex three-dimensional architecture has long hindered a comprehensive understanding of its function and regulation. Here, we present an integrated framework that combines imaging based three-dimensional modeling, computational fluid dynamics simulations, and reconstruction to elucidate the structural and hemodynamic complexity of the glomerulus. Our analyses reveal that the inherent asymmetry between afferent and efferent arterioles is critical for establishing a precise pressure-flow relationship and regulating hemodynamics. We further successfully fabricated a perfusable, anatomically accurate mouse glomerulus within a microphysiological system, demonstrating proof-of-concept for perfusion analysis and vascularization. These findings establish a transformative platform for studying glomerular diseases and pave the way for therapeutic interventions.
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http://dx.doi.org/10.1063/5.0264128 | DOI Listing |
Comput Methods Biomech Biomed Engin
September 2025
Center for Medical Metrology, National institute of metrology, Beijing, China.
Geometric changes in the sigmoid sinus diverticulum (SSD) can alter its hemodynamic - a primary factor contributing to pulsatile tinnitus (PT). However, not all SSD cases lead to clinical PT symptoms. This study aims to investigate the influence of the diameter of the diverticulum (EDD) on the hemodynamics of the sigmoid sinus in PT.
View Article and Find Full Text PDFAnn Biomed Eng
September 2025
Department of Mechanical Engineering, Koc University, Rumeli Feneri Campus, Sarıyer, 34450, Istanbul, Turkey.
Purpose: The design and development of ventricular assist devices have heavily relied on computational tools, particularly computational fluid dynamics (CFD), since the early 2000s. However, traditional CFD-based optimization requires costly trial-and-error approaches involving multiple design cycles. This study aims to propose a more efficient VAD design and optimization framework that overcomes these limitations.
View Article and Find Full Text PDFJTCVS Open
August 2025
The State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China.
Objectives: Left ventricular vortex dynamics play a crucial role in cardiac function but are significantly altered by mitral valve diseases or surgical interventions. Such hemodynamic changes may lead to maladaptive intracardiac vortices, potentially triggering pathways associated with progressive left ventricular remodeling and thrombosis. This study assessed left ventricular hemodynamics under both physiological and pathological conditions using a biohybrid in vitro platform, aiming to analyze the impact of these conditions on cardiac function.
View Article and Find Full Text PDFBMC Anesthesiol
September 2025
Faculty of Medicine, Anesthesiology, Surgical Intensive Care and Pain Medicine Department, Tanta University, Tanta, El Gharbia, 31511, Egypt.
Background: Virtual reality (VR) has shown promise as a nonpharmacological alternative to pharmaceutical pain relievers and anxiety medications in clinical trials by decreasing pain and anxiety in orthopedic surgeries. The aim of the study was to evaluate the impact of VR on these outcomes in individuals undergoing total hip arthroplasty (THA).
Methods: This randomized, controlled, open-label research included 50 participants planned for THA with spinal anesthesia (SA).
PLoS Comput Biol
September 2025
Department of Mathematical and Computational Methods, National Laboratory for Scientific Computing, Petrópolis, Brazil.
Understanding cerebral circulation is crucial for early diagnosis and patient-oriented therapies for brain conditions. However, blood flow simulations at the organ scale have been limited. This work introduces a framework for modeling extensive vascular networks in the human cerebral cortex and conducting pulsatile blood flow simulations.
View Article and Find Full Text PDF