An investigation of how blood flows through stents after opening clogged arteries has led a team of researchers at the Medical College of Wisconsin Cardiovascular Center in Milwaukee to suggest that stents designed with thinner and fewer linkages may be the basis of a new generation of stents. Their findings are published in the July 2004 issue of the Journal of Applied Physiology.
One of the most common methods for treating heart blockages is balloon angioplasty, inflating tiny catheters with miniature balloons to open clogged arteries. Stents, tiny metal scaffolds, are then placed at the newly opened site in the arteries to permanently prop them open. However, 30 percent of stent patients experience restenosis, where arteries narrow again due to scar tissue and cellular growth that forms around the device.
“Currently, eliminating restenosis is the holy grail of catheter-based procedures such as angioplasty and stenting,” says John LaDisa, Ph.D., of the Medical College, who studied the stent designs. “Current research has not identified all the contributing factors to restenosis,” says Dr. LaDisa. “Now our research has shown that a stent’s design and its alteration of the blood vessel anatomy influences blood flow in ways that can contribute to restenosis. Also, restenosis rates vary according to an individual’s vessel geometry at the site of stent insertion.”
Experiments in mice and human cells shed light on best way to deliver nanoparticle therapy for cancer
26.03.2020 | Johns Hopkins Medicine
Too much salt weakens the immune system
26.03.2020 | Rheinische Friedrich-Wilhelms-Universität Bonn
An international team with the participation of Prof. Dr. Michael Kues from the Cluster of Excellence PhoenixD at Leibniz University Hannover has developed a new method for generating quantum-entangled photons in a spectral range of light that was previously inaccessible. The discovery can make the encryption of satellite-based communications much more secure in the future.
A 15-member research team from the UK, Germany and Japan has developed a new method for generating and detecting quantum-entangled photons at a wavelength of...
Together with their colleagues from the University of Würzburg, physicists from the group of Professor Alexander Szameit at the University of Rostock have devised a “funnel” for photons. Their discovery was recently published in the renowned journal Science and holds great promise for novel ultra-sensitive detectors as well as innovative applications in telecommunications and information processing.
The quantum-optical properties of light and its interaction with matter has fascinated the Rostock professor Alexander Szameit since College.
Researchers at the University of Zurich show that different stem cell populations are innervated in distinct ways. Innervation may therefore be crucial for proper tissue regeneration. They also demonstrate that cancer stem cells likewise establish contacts with nerves. Targeting tumour innervation could thus lead to new cancer therapies.
Stem cells can generate a variety of specific tissues and are increasingly used for clinical applications such as the replacement of bone or cartilage....
An international research team led by Kiel University develops an extremely porous material made of "white graphene" for new laser light applications
With a porosity of 99.99 %, it consists practically only of air, making it one of the lightest materials in the world: Aerobornitride is the name of the...
Researchers at Graz University of Technology have developed a framework by which wireless devices with different radio technologies will be able to communicate directly with each other.
Whether networked vehicles that warn of traffic jams in real time, household appliances that can be operated remotely, "wearables" that monitor physical...
26.03.2020 | Event News
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03.03.2020 | Event News
31.03.2020 | Life Sciences
31.03.2020 | Life Sciences
31.03.2020 | Medical Engineering