The researchers believe that these results are also applicable to children that have suffered damage due to radiotherapy of brain tumors.
Children that receive radiation treatment for brain tumors often develop learning and memory problems later in life that may be associated with attention deficits. These symptoms have been linked to radiation-induced damage, which not only kills cancer cells, but also stem cells that reside in the hippocampus, a region essential for proper memory function.
Dr. Andrew Naylor has previously studied the effects of physical exercise on stem cells, and Associate professor Klas Blomgren has studied the consequences of irradiation on brain cells. Together with Professor Georg Kuhn, a pioneer in the brain stem cell field, the group investigated whether physical training could counteract previously established damage to certain regions of the brain. They exposed nine-day-old mice to a radiation dose that resulted in damage to the mouse brain, similar to damage observed in human cancer patients. Half of the mice were given free access to a running wheel, which mice like to run on for extended periods of time. At 13 weeks of age, the mice were placed in an open space and were allowed to explore while their behavior was analyzed by studying a number of variables to describe their movement patterns.
The results from the study demonstrated that irradiated mice showed increased motor activity and altered movement patterns that were normalized if they were allowed to exercise. In addition, the mouse brains contained 50% more stem cells than their non-exercising counterparts. The researchers were also able to determine that newly formed nerve cells in an irradiated brain form fewer extensions, compared to a non-irradiated brain. The nerve extensions were not only fewer, but they also pointed in the wrong direction. Interestingly, if the animals were allowed to exercise, the nerve extensions were normalized. "These results suggest that irradiation-induced damage in children with brain tumors could be reduced if the child under guidance is allowed to do stimulating and fun exercise", says Professor Georg Kuhn.Journal: Proceedings of the National Academy of Sciences USA
Associate professor/pediatrician Klas Blomgren, phone: +46 31 786 3376, +46 703 233 353, e-mail: email@example.com
Ulrika Lundin | idw
Hidden dynamics detected in neuronal networks
23.07.2019 | Forschungszentrum Juelich
Towards a light driven molecular assembler
23.07.2019 | Christian-Albrechts-Universität zu Kiel
Augsburg chemists and physicists report how they have succeeded in the extremely difficult separation of hydrogen and deuterium in a gas mixture.
Thanks to the Surface Acoustic Wave (SAW) technology developed here and already widely used, the University of Augsburg is internationally recognized as the...
Adjusting the thermal conductivity of materials is one of the challenges nanoscience is currently facing. Together with colleagues from the Netherlands and Spain, researchers from the University of Basel have shown that the atomic vibrations that determine heat generation in nanowires can be controlled through the arrangement of atoms alone. The scientists will publish the results shortly in the journal Nano Letters.
In the electronics and computer industry, components are becoming ever smaller and more powerful. However, there are problems with the heat generation. It is...
Scientists have visualised the electronic structure in a microelectronic device for the first time, opening up opportunities for finely-tuned high performance electronic devices.
Physicists from the University of Warwick and the University of Washington have developed a technique to measure the energy and momentum of electrons in...
Scientists at the University Würzburg and University Hospital of Würzburg found that megakaryocytes act as “bouncers” and thus modulate bone marrow niche properties and cell migration dynamics. The study was published in July in the Journal “Haematologica”.
Hematopoiesis is the process of forming blood cells, which occurs predominantly in the bone marrow. The bone marrow produces all types of blood cells: red...
For some phenomena in quantum many-body physics several competing theories exist. But which of them describes a quantum phenomenon best? A team of researchers from the Technical University of Munich (TUM) and Harvard University in the United States has now successfully deployed artificial neural networks for image analysis of quantum systems.
Is that a dog or a cat? Such a classification is a prime example of machine learning: artificial neural networks can be trained to analyze images by looking...
24.06.2019 | Event News
29.04.2019 | Event News
17.04.2019 | Event News
23.07.2019 | Life Sciences
23.07.2019 | Life Sciences
23.07.2019 | Physics and Astronomy