Engineers who have induced heart cells in culture to mimic the properties of the heart have used the tissue to gain new insight into the mechanisms that spawn irregular heart rhythms. Studies of the engineered cardiac tissue revealed that while electric shocks such as those delivered by defibrillators usually stopped aberrant waves, in some cases they cause them to accelerate and multiply.
The Duke University and Johns Hopkins University team, led by Nenad Bursac of Duke’s Pratt School of Engineering, reported its findings in the Feb. 1, 2006, Cardiovascular Research. Bursac and study co-author Leslie Tung conducted the experiments at Johns Hopkins before Bursac joined the Duke faculty. The work was supported by the National Institutes of Health and the American Heart Association.
In their experiments, the researchers sought to understand the characteristics of ventricular tachycardia -- a condition characterized by abnormally fast beating of the heart’s pumping chambers. In particular, they sought to understand how such arrhythmia may lead to ventricular fibrillation, in which the heart’s electrical activity becomes disordered, causing the ventricles to flutter rather than synchronously beat. As a result, pumping of the blood is inefficient, and death can result within minutes.
Kendall Morgan | EurekAlert!
Scientists learn more about how gene linked to autism affects brain
19.06.2018 | Cincinnati Children's Hospital Medical Center
Overdosing on Calcium
19.06.2018 | Albert-Ludwigs-Universität Freiburg im Breisgau
Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...
Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.
Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...
The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.
Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.
An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.
Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...
Light detection and control lies at the heart of many modern device applications, such as smartphone cameras. Using graphene as a light-sensitive material for...
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19.06.2018 | Physics and Astronomy
19.06.2018 | Life Sciences
19.06.2018 | Physics and Astronomy