Results 111 to 120 of about 52,661 (244)

The arterial load in pulmonary hypertension [PDF]

European Respiratory Review, 2010
The anatomical differences between the pulmonary and systemic arterial system are the main cause of the difference in distribution of compliance. In the pulmonary arterial system compliance is distributed over the entire arterial system, and stands at ...
A. Vonk-Noordegraaf, P.E. Postmus, N. Westerhof, N. Saouti   +3 more
doaj  

Hemodynamic assessment of pulmonary hypertension in mice: a model based analysis of the disease mechanism [PDF]

arXiv, 2017
This study uses a one dimensional fluid dynamics arterial network model to infer changes in hemodynamic quantities associated with pulmonary hypertension in mice. Data for this study include blood flow and pressure measurements from the main pulmonary artery for 7 control mice with normal pulmonary function and 5 hypertensive mice with hypoxia induced ...
arxiv  

In vivo toxic and lethal cardiorespiratory effects of a synthetic quaternary ammonium salt derivative of haloperidol in mice

Animal Models and Experimental Medicine, EarlyView.
Hematoxylin–eosin (H&E) stains of the heart, liver, lung, and kidney show acute toxicity. Abstract Background To investigate the toxicity of N‐n‐butyl haloperidol iodide (F2), a quaternary ammonium salt derivative of haloperidol, in mice for potential therapeutic purposes. Methods The acute median lethal dose (LD50) of F2 was determined using the Bliss
Jilin Liao, Binger Lu, Jinhua Yang, Xiaowan Wang, Shuxian Li, Hongbo Fu, Fenfei Gao   +6 more
wiley   +1 more source

Establishment of rat model for aspiration pneumonia and potential mechanisms

Animal Models and Experimental Medicine, EarlyView.
Aspiration pneumonia was induced in Sprague Dawley rats by intratracheal instillation of hydrochloric acid (HCl, 1.5 μL/g.wt, pH = 1) followed by lipopolysaccharide (LPS, 20 μg/g.wt) after 1 h. The model reproduced hallmark features of acute lung injury, including histological lung damage, microvascular dysfunction, inflammation, hypoxemia, and ...
Hanbing Hu, Junfeng Chen, Yiru Shao, Yuedong Tang, Yu Dun, Obulkasim Memet, Xuanrong Bao, Jie Shen   +7 more
wiley   +1 more source

Progress in research on osteoporosis secondary to SARS‐CoV‐2 infection

Animal Models and Experimental Medicine, EarlyView.
This review explores the potential mechanisms, complications, risk factors, and future research directions related to osteoporosis secondary to SARS‐CoV‐2 infection. Key mechanisms include an imbalance between osteoclast and osteoblast activity driven by direct viral effects on bone, inflammation, hypoxia, dysregulation of noncoding RNAs, and metabolic
Jinlong Wang, Yibai Xiong, Zhiqi Song, Yanhong Li, Ling Zhang, Chuan Qin   +5 more
wiley   +1 more source

Deep phenotyping of cardiac function in heart transplant patients using cardiovascular systems models [PDF]

arXiv, 2018
Heart transplant patients are followed with periodic right heart catheterizations (RHCs) to identify post-transplant complications and guide treatment. Post-transplant positive outcomes are associated with a steady reduction of right ventricular and pulmonary arterial pressures, toward normal levels of right-side pressure (about 20mmHg) measured by RHC.
arxiv  

Description of unilateral kidney embolism and contralateral nephrectomy as a less invasive remnant kidney model in cats; a proof‐of‐concept study

Animal Models and Experimental Medicine, EarlyView.
Unilateral, minimally invasive, renal arterial embolization and delayed contralateral nephrectomy was described in cats as a novel remnant kidney model of chronic kidney disease using two doses of embolic particles. Renal function declined and characteristic histopathological markers of kidney disease were present 6 months after the embolism procedure.
Chad W. Schmiedt, Bianca N. Lourenço, Lauren E. Markovic, Meghan Lancaster, Sanjeev Gumber, Juliane Wannemacher, Peter Florian, Amanda E. Coleman   +7 more
wiley   +1 more source

Vasodepressor Effects of Adenosine in the Cat are Independent of Cyclooxygenase, Potassium Channels, and Nitric Oxide Pathways

Drugs in R&D, 2019
Background Pulmonary arterial hypertension is a hemodynamic disorder. Signs and symptoms are generally difficult to recognize because they are non-specific. The current treatment for pulmonary arterial hypertension offers no cure or prevention; therefore,
Alan David Kaye, Syed R. Baber, Mohammed T. Sharief, Rachel J. Kaye, Elyse M. Cornett   +4 more
doaj   +1 more source

Image2Flow: A hybrid image and graph convolutional neural network for rapid patient-specific pulmonary artery segmentation and CFD flow field calculation from 3D cardiac MRI data [PDF]

Computational fluid dynamics (CFD) can be used for evaluation of hemodynamics. However, its routine use is limited by labor-intensive manual segmentation, CFD mesh creation, and time-consuming simulation. This study aims to train a deep learning model to both generate patient-specific volume-meshes of the pulmonary artery from 3D cardiac MRI data and ...
arxiv   +1 more source

An optimized perfusate for enhanced rat ex vivo lung perfusion and lung transplant models

Animal Models and Experimental Medicine, EarlyView.
We explored a low‐cost and efficient perfusate composition for use in rat ex vivo lung perfusion (EVLP) and lung transplant models. This perfusate demonstrates better biocompatibility, likely due to a reduction in immune responses associated with high doses of xenogenic proteins, resulting in less lung injury posttransplantation.
Jie Zhang, Xuanlin Zhang, Jianxing He
wiley   +1 more source