نتایج جستجو برای: vessel walls

تعداد نتایج: 120692  

Journal: Addiction and Health 2014
Afsaneh Forood, Amin Mahdavi Reza Malekpour-Afshar

Background: Plasminogen activator inhibitor-1 (PAI-1) is a glycoprotein with inhibitory effects on the formation of plasmin from plasminogen by plasminogen activator. Thus, it prevents clot lysis in vessel walls. Several evidences prove the relationship between coronary artery disease and response to fibrinolytic therapy in patients with myocardial infarction with PAI-1 level. Opium addiction i...

Journal: :Toxicology and applied pharmacology 2006
S Havarinasab P Hultman

Inorganic mercury may aggravate murine systemic autoimmune diseases which are either spontaneous (genetically determined) or induced by non-genetic mechanisms. Organic mercury species, the dominating form of mercury exposure in the human population, have not been examined in this respect. Therefore, ethyl mercury in the form of thimerosal, a preservative recently debated as a possible health ha...

Journal: :FASEB journal : official publication of the Federation of American Societies for Experimental Biology 2008
Zhaodi Gong Laura E Niklason

Using biodegradable scaffold and a biomimetic perfusion system, our lab has successfully engineered small-diameter vessel grafts using endothelial cells (ECs) and smooth muscle cells (SMCs) obtained from vessels in various species. However, translating this technique into humans has presented tremendous obstacles due to species and age differences. SMCs from elderly persons have limited prolife...

2017
Sherwin Carlquist David A. Hoekman SHERWIN CARLQUIST

Qualitative and quantitative data are presented for woods of 37 species representing 11 genera; most species included represent a maximal degree of woodiness for the family, and herbaceous groups are mostly omitted. Growth rings are absent or nearly so. Vessel elements have simple perforation plates (except for Kohleria elegans) and alternate circular or oval pits of various sizes on vessel-ves...

Journal: :Journal of biomedical optics 2013
Christopher M Cilip Sarah B Rosenbury Nicholas Giglio Thomas C Hutchens Gino R Schweinsberger Duane Kerr Cassandra Latimer William H Nau Nathaniel M Fried

Suture ligation of blood vessels during surgery can be time-consuming and skill-intensive. Energy-based, electrosurgical, and ultrasonic devices have recently replaced the use of sutures and mechanical clips (which leave foreign objects in the body) for many surgical procedures, providing rapid hemostasis during surgery. However, these devices have the potential to create an undesirably large c...

2013
Rodrigo Moreno Chunliang Wang Örjan Smedby

This paper proposes an automatic segmentation method of vessel walls that combines an implicit 3D model of the vessels and a total curvature penalizer in a level set evolution scheme. First, the lumen is segmented by alternating a model-guided level set evolution and a recalculation of the model itself. Second, the level set of the lumen is evolved with a term that aims at penalizing the total ...

2017
Miguel Urrecha Ignacio Romero Javier DeFelipe Angel Merchán-Pérez

Synaptic activity is regulated and limited by blood flow, which is controlled by blood vessel dilation and contraction. Traditionally, the study of neurovascular coupling has mainly focused on energy consumption and oxygen delivery. However, the mechanical changes that blood vessel movements induce in the surrounding tissue have not been considered. We have modeled the mechanical changes that m...

2017
A.S. Bychkov V.P. Zarubin A.A. Karabutov V.A. Simonova E.B. Cherepetskaya

We describe a universal system for research in combined real-time optoacoustic (OA) and laser-ultrasonic (LU) imaging. The results of its testing on the task of needle insertion into the blood vessel model diagnostics are presented. In OA mode, where laser light is absorbed directly in the sample, the contents of blood vessel model is clearly visible. In LU mode, where the short ultrasonic prob...

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