Results 31 to 40 of about 795,255 (381)
The central role of metabolism in vascular morphogenesis [PDF]
arXiv, 2021 As nutrients travel through microcirculation and are absorbed, their availability continuously decreases. However, a uniform nutrient distribution is critical, as it prevents tissue death in poorly supplied areas. How, then, do vascular networks achieve equi-perfusion?
arxiv
Microvascular alterations in hypertension and vascular aging [PDF]
, 2017 Hypertension and aging are characterized by vascular remodelling and stiffness as well as endothelial dysfunction. Endothelial function declines with age, since aging is associated with senescence of the endothelium due to increased rate of apoptosis and
Battistoni, Allegra +5 more
core +1 more source
Pitfalls in the Assessment of Vascular Resistance [PDF]
Cardiology, 1994 Vascular resistance (R) to flow is calculated as the ratio of perfusion pressure between two points (P1-P2) to flow rate (Q). In high-pressure circuits (e.g., systemic), it is justifiable to use arterial pressure (P1) to represent perfusion pressure. It is not permissible to calculate resistance without measuring Q unless a comparison is being made in ...
James W. Hicks, Henry S. Badeer
openaire +2 more sources
Acute cardiovascular response after maximal cycling exercise in endurance- and strength-trained men
Journal of Men's Health, 2022 Background: Post-exercise hypotension is an important regulator of ambulatory blood pressure—an independent risk factor for cardiovascular disease. Although post-exercise hypotension may be associated with aerobic exercise capacity in male athletes, it ...
Yoko Saito +3 more
doaj +1 more source
Mitigation of Radiation Induced Pulmonary Vascular Injury by Delayed Treatment with Captopril [PDF]
, 2012 Background and Objective: A single dose of 10 Gy radiation to the thorax of rats results in decreased total lung angiotensin-converting enzyme (ACE) activity, pulmonary artery distensibility and distal vascular density while increasing pulmonary ...
Fish, Brian L. +5 more
core +2 more sources
Frontiers in Physiology, 2017 There are two primary components that produce pulmonary arterial hypertension (PAH); aberrant structural changes (smooth muscle cell proliferation, smooth muscle cell hypertrophy, and the deposition of matrix proteins within the media of pulmonary ...
Melissa A. Lyle +2 more
doaj +1 more source
Optical flow-based vascular respiratory motion compensation [PDF]
arXiv, 2023 This paper develops a new vascular respiratory motion compensation algorithm, Motion-Related Compensation (MRC), to conduct vascular respiratory motion compensation by extrapolating the correlation between invisible vascular and visible non-vascular. Robot-assisted vascular intervention can significantly reduce the radiation exposure of surgeons.
arxiv
Generative ODE Modeling with Known Unknowns [PDF]
, 2020 In several crucial applications, domain knowledge is encoded by a system of ordinary differential equations (ODE), often stemming from underlying physical and biological processes. A motivating example is intensive care unit patients: the dynamics of vital physiological functions, such as the cardiovascular system with its associated variables (heart ...
arxiv +1 more source
Close relation of arterial ICC-like cells to the contractile phenotype of vascular smooth muscle cell [PDF]
, 2007 This work aimed to establish the lineage of cells similar to the interstitial cells of Cajal (ICC), the arterial ICC-like (AIL) cells, which have recently been described in resistance arteries, and to study their location in the artery wall.
Bolton, TB +5 more
core +3 more sources
Comparison of Carotid Artery Intima-media Thickness and Resistive Index by Ultrasound and Colour Doppler in Pre-hypertensives and Stage One Hypertensives [PDF]
International Journal of Anatomy Radiology and Surgery, 2019 Introduction: Pre-hypertension and stage one hypertension remains major public health problem in both developed and developing countries. It primarily affects elastic arteries, hence common carotid artery Intima-Media Thickness (IMT) and Resistive ...
Subha Venkatachalam +5 more
doaj +1 more source