scholarly journals In vitro comparison of aortic valve movement after valve-preserving aortic replacement

2006 ◽  
Vol 132 (1) ◽  
pp. 32-37 ◽  
Author(s):  
Roland Fries ◽  
Thomas Graeter ◽  
Diana Aicher ◽  
Helmut Reul ◽  
Christoph Schmitz ◽  
...  
Keyword(s):  
Aortic Valve ◽  
Valve Movement ◽  
Aortic Replacement ◽  
In Vitro Comparison

Does Undersizing of Transcatheter Aortic Valve Bioprostheses during Valve-in-valve Implantation Avoid Coronary Obstruction? An In Vitro Study

2016 ◽  
Vol 64 (S 01) ◽  
Author(s):  
S. Stock ◽  
M. Scharfschwerdt ◽  
R. Meyer-Saraei ◽  
D. Richardt ◽  
E. Charitos ◽  
...  
Keyword(s):  
Aortic Valve ◽  
In Vitro Study ◽  
Vitro Study ◽  
Transcatheter Aortic Valve ◽  
Valve In Valve ◽  
Valve Implantation ◽  
Coronary Obstruction

Monoblocks :Hype or Hope!!! “an In-Vitro Comparison of Push Out Bond Strengths of Resilon with Two Different Resin-Based Sealers

2012 ◽  
Vol 2 (3) ◽  
pp. 317-319
Author(s):  
Dr.Priyanka Sarangi ◽  
◽  
Dr.Veerendra M Uppin
Keyword(s):  
Bond Strengths ◽  
Push Out ◽  
In Vitro Comparison

scholarly journals An in vitro comparison of tibial tray cementation using gun pressurization or pulsed lavage

2014 ◽  
Vol 38 (5) ◽  
pp. 967-971 ◽  
Author(s):  
Ulf J. Schlegel ◽  
Klaus Püschel ◽  
Michael M. Morlock ◽  
Katrin Nagel
Keyword(s):  
Tibial Tray ◽  
Pulsed Lavage ◽  
In Vitro Comparison

Passing a Mechanical Aortic Valve With a Short Tip Dilator to Facilitate Aortic Arch Endovascular Branched Repair

2021 ◽  
pp. 152660282110025
Author(s):  
Nikolaos Konstantinou ◽  
Sven Peterss ◽  
Jan Stana ◽  
Barbara Rantner ◽  
Ramin Banafsche ◽  
...  
Keyword(s):  
Aortic Valve ◽  
Aortic Arch ◽  
Stent Graft ◽  
Mechanical Valve ◽  
Valve Prosthesis ◽  
Proper Position ◽  
Mechanical Aortic Valve ◽  
Aortic Replacement ◽  
Custom Made ◽  
Aortic Valve Prosthesis

Purpose To present a novel technique to successfully cross a mechanical aortic valve prosthesis. Technique A 55-year-old female patient with genetically verified Marfan syndrome presented with a 5-cm anastomotic aneurysm of the proximal aortic arch after previous ascending aortic replacement due to a type A aortic dissection in 2007. The patient also underwent mechanical aortic valve replacement in 1991. A 3-stage hybrid repair was planned. The first 2 steps included debranching of the supra-aortic vessels. In the third procedure, a custom-made double branched endovascular stent-graft with a short 35-mm introducer tip was implanted. The mechanical valve was passed with the tip of the dilator on the lateral site of the leaflet, without destructing the valve and with only mild symptoms of aortic insufficiency, as one leaflet continued to work. This allowed the implantation of the stent-graft directly distally of the coronary arteries. Postoperative computed tomography angiography showed no endoleaks and patent coronary and supra-aortic vessels. Conclusion Passing a mechanical aortic valve prosthesis at the proper position is feasible and allows adequate endovascular treatment in complex arch anatomy. However, caution should be taken during positioning of the endovascular graft as the tip may potentially damage the valve prosthesis.

scholarly journals Toxicological effects of zinc oxide nanoparticle exposure: an in vitro comparison between dry aerosol air-liquid interface and submerged exposure systems

2021 ◽  
pp. 1-17
Author(s):  
Karin Lovén ◽  
Julia Dobric ◽  
Deniz A. Bölükbas ◽  
Monica Kåredal ◽  
Sinem Tas ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Liquid Interface ◽  
Nanoparticle Exposure ◽  
Zinc Oxide Nanoparticle ◽  
Toxicological Effects ◽  
Oxide Nanoparticle ◽  
Air Liquid Interface ◽  
In Vitro Comparison

Platelet membrane-coated nanoparticles target sclerotic aortic valves in ApoE−/− mice by multiple binding mechanisms under pathological shear stress

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
H Yang ◽  
Y Song ◽  
Z Huang ◽  
J Qian ◽  
Z Pang ◽  
...  
Keyword(s):  
Shear Stress ◽  
Aortic Valve ◽  
Aortic Valve Disease ◽  
Binding Capacity ◽  
Platelet Membrane ◽  
Valve Disease ◽  
Funding Source ◽  
Aortic Valves ◽  
Coated Nanoparticles

Abstract Background Aortic valve disease is the most common valvular heart disease leading to valve replacement. The efficacy of pharmacological therapy for aortic valve disease is limited by the high mechanical stress at the aortic valves impairing the binding rate. We aimed to identify nanoparticle coating with entire platelet membranes to fully mimic their inherent multiple adhesion mechanisms and target the sclerotic aortic valve of apolipoprotein E-deficient (ApoE−/−) mice based on their multiple sites binding capacity under high shear stress. Methods Considering the potent interaction of platelet membrane glycoproteins with components present in sclerotic aortic valves, platelet membrane-coated nanoparticles (PNPs) were synthetized and the binding capacity under high shear stress was evaluated in vitro and in vivo. Results Compared with PNPs bound intensity in the static station, 161%, 59%, and 39% of attached PNPs remained adherent on VWF-, collagen-, and fibrin-coated surfaces under shear stress of 25dyn/cm2 respectively. PNPs demonstrated effectively adhering to von Willebrand factor, collagen and fibrin under shear stresses in vitro. In an aortic valve disease model established in ApoE−/− mice, PNPs group exhibited significant increase of accumulation in the aortic valves compared with PBS and control NP group. PNPs displayed high degrees of proximity or co-localization with vWF, collagen and fibrin, which exhibited good targeting to sclerotic aortic valves by mimicking platelet multiple adhesive mechanisms. Conclusion PNPs could provide a promising platform for the molecular diagnosis and targeting treatment of aortic valve disease. Targeting combination Funding Acknowledgement Type of funding source: Foundation. Main funding source(s): National Natural Science Foundation of China

In vitro comparison between apex locators, direct and radiographic techniques for determining the root canal length in primary teeth

2019 ◽  
Vol 20 (5) ◽  
pp. 403-408
Author(s):  
L. Z. Adriano ◽  
J. C. Barasuol ◽  
M. Cardoso ◽  
M. Bolan
Keyword(s):  
Root Canal ◽  
Primary Teeth ◽  
In Vitro Comparison

In vitro comparison of harvesting site effects on cardiac extracellular matrix hydrogels

2021 ◽  
Author(s):  
Emily Mulvany ◽  
Sara McMahan ◽  
Jiazhu Xu ◽  
Narges Yazdani ◽  
Rebecca Willits ◽  
...  
Keyword(s):  
Extracellular Matrix ◽  
Site Effects ◽  
In Vitro Comparison
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