Results 21 to 30 of about 172,620 (346)

Vasoactive Effects of Acute Ergot Exposure in Sheep

Toxins, 2021
Ergotism is a common and increasing problem in Saskatchewan’s livestock. Chronic exposure to low concentrations of ergot alkaloids is known to cause severe arterial vasoconstriction and gangrene through the activation of adrenergic and serotonergic ...
Rossalin Yonpiam, Jair Gobbet, Ashok Jadhav, Kaushik Desai, Barry Blakley, Ahmad Al-Dissi   +5 more
doaj   +1 more source

Limited AT1 Receptor Internalization Is a Novel Mechanism Underlying Sustained Vasoconstriction Induced by AT1 Receptor Autoantibody From Preeclampsia

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2019
Background Angiotensin II type 1 receptor (AT1R) autoantibody (AT1‐AA) was first identified as a causative factor in preeclampsia. Unlike physiological ligand angiotensin II (Ang II), AT1‐AA can induce vasoconstriction in a sustained manner, causing a ...
Jingwei Bian, Jinghui Lei, Xiaochen Yin, Pengli Wang, Ye Wu, Xiaoli Yang, Li Wang, Suli Zhang, Huirong Liu, Michael L. X. Fu   +9 more
doaj   +1 more source

Reversible Cerebral Vasoconstriction Syndrome Presenting as Transient Vessel Wall Enhancement on Contrast-Enhanced Fluid-Attenuated Inversion Recovery Images: A Case Report and Literature Review

대한영상의학회지, 2020
Reversible cerebral vasoconstriction syndrome (RCVS) is a clinical and radiological syndrome with primary features that include hyperacute onset of severe headache and segmental vasoconstriction of the cerebral arteries, which resolve within 3 months ...
Sun Ah Heo, Eun Soo Kim, Yul Lee
doaj   +1 more source

Reversible Cerebral Vasoconstriction Syndrome Associated with Levonorgestrel-Releasing Intrauterine System

Brain Sciences, 2021
Reversible cerebral vasoconstriction syndromes (RCVS) is a rare disease that is characterized by reversible multifocal stenosis of the cerebral arteries with various clinical manifestations. Though the pathomechanism of RCVS was unclear, we reported RCVS
Sangwon Choi, Ju-Young Lee, Jong Seok Bae, Hong-Ki Song, Ju-Hun Lee, Yerim Kim   +5 more
doaj   +1 more source

Randomized preclinical study of machine perfusion in vascularized composite allografts

BJS (British Journal of Surgery), EarlyView., 2020
This study was designed to identify the optimum machine perfusion parameters for preservation of limbs before transplantation, and determine whether this was better than cold storage. Normothermic machine perfusion at a pressure of 70 mmHg (NMP‐70) provided superior preservation to cold storage after transplantation.
K. R. Amin, J. P. Stone, J. Kerr, A. Geraghty, L. Joseph, A. Montero‐Fernandez, J. K. Wong, J. E. Fildes   +7 more
wiley   +1 more source

Increased Contractile Function of Human Saphenous Vein Grafts Harvested by “No-Touch” Technique

Frontiers in Physiology, 2018
Saphenous vein grafts are the most common conduits used for coronary artery bypass grafting (CABG); however, no more than 60% of vein grafts remain open after 10 years and graft failure is associated with poor clinical outcome.
Lene P. Vestergaard, Leila Benhassen, Leila Benhassen, Ivy S. Modrau, Frank de Paoli, Frank de Paoli, Ebbe Boedtkjer   +6 more
doaj   +1 more source

Vascular Smooth Muscle Contractile Function Declines With Age in Skeletal Muscle Feed Arteries

Frontiers in Physiology, 2018
Aging induces a progressive decline in vasoconstrictor responses in central and peripheral arteries. This study investigated the hypothesis that vascular smooth muscle (VSM) contractile function declines with age in soleus muscle feed arteries (SFA ...
John W. Seawright, Harini Sreenivasappa, Holly C. Gibbs, Samuel Padgham, Song Y. Shin, Christine Chaponnier, Alvin T. Yeh, Jerome P. Trzeciakowski, Christopher R. Woodman, Christopher R. Woodman, Andreea Trache, Andreea Trache   +11 more
doaj   +1 more source

Non-Invasive Techniques Reveal Heifer Response to Fescue Endophyte Type in Grazing Studies

Animals, 2023
Cattle grazing tall fescue (Schedonorus arundinaceous) infected with wild-type endophytes (WE) leads to a syndrome commonly known as fescue toxicosis. Replacing WE tall fescue with a novel endophyte-infected (NE) tall fescue can mitigate this problem but
Sanjok Poudel, John H. Fike, Lee Wright, Gabriel J. Pent   +3 more
doaj   +1 more source

A mathematical model of the metabolic and perfusion effects on cortical spreading depression [PDF]

PLoS ONE 8(8) (2013), 2012
Cortical spreading depression (CSD) is a slow-moving ionic and metabolic disturbance that propagates in cortical brain tissue. In addition to massive cellular depolarization, CSD also involves significant changes in perfusion and metabolism -- aspects of CSD that had not been modeled and are important to traumatic brain injury, subarachnoid hemorrhage,
arxiv   +1 more source

Instability and `Sausage-String' Appearance in Blood Vessels during High Blood Pressure [PDF]

Phys. Rev. Lett. 82, 1995-1998 (1999), 1998
A new Rayleigh-type instability is proposed to explain the `sausage-string' pattern of alternating constrictions and dilatations formed in blood vessels under influence of a vasoconstricting agent. Our theory involves the nonlinear elasticity characteristics of the vessel wall, and provides predictions for the conditions under which the cylindrical ...
arxiv   +1 more source