Ebstein’s anomaly is a heart defect in which the valve between the right ventricle and the right atrium is abnormally formed. Since the heart valve cannot close properly, heart function is compromised. Some patients with Ebstein’s anomaly additionally suffer from a myocardial disease called left ventricular noncompaction (LVNC). This disease is associated with increased risk for sudden cardiac death or inadequate functioning of the heart muscle (myocardial insufficiency).
A few years ago in a study of LVNC patients, Prof. Ludwig Thierfelder and Dr. Sabine Klaassen (both MDC) discovered mutations in three different genes that encode muscle structural proteins. These proteins are important for heart contraction and for enabling the blood to be pumped through the body. One gene in which the MDC researchers identified mutations is the gene MYH7. Mutations in this gene in LVNC patients cause sponge-like muscle tissue to protrude into the left ventricle, thus impairing the contractile performance of the heart.
As a consequence of these findings, Dr. Alex V. Postma from Amsterdam, Professor Judith Goodship from Newcastle and PD Dr. Klaassen from the MDC sought to determine whether an association exists between Ebstein’s anomaly, LVNC and mutations in the gene MYH7. In a multicenter study of cohorts from the Netherlands, Germany and the UK, they studied 141 Ebstein’s patients who were not related to each other for mutations in MYH7. In eight of the study participants, the researchers identified mutations in this gene. Six of these patients also suffered from the myocardial disease LVNC in addition to Ebstein’s anomaly.
“From these results we conclude that one mutation can lead to different congenital heart diseases. These can even occur concurrently, as here with Ebstein’s anomaly and LVNC,” said Dr. Klaassen. “In these cases we recommend that other family members also undergo cardiac examinations and genetic testing, since the risk for heart arrhythmia or heart failure is increased in mutation carriers even if they are not known to have a congenital heart defect. The earlier the mutations encoding the structural proteins of the heart are recognized, the better: close monitoring, long-term ECG recording and drug treatment can be conducted at an early stage. This means that physicians can advise and treat their patients more effectively.”*Mutations in the Sarcomere Gene MYH7 in Ebstein’s Anomaly
Barbara Bachtler | Max-Delbrück-Centrum
Closing the carbon loop
08.12.2016 | University of Pittsburgh
Newly discovered bacteria-binding protein in the intestine
08.12.2016 | University of Gothenburg
In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
08.12.2016 | Life Sciences
08.12.2016 | Physics and Astronomy
08.12.2016 | Materials Sciences