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See-through 'MitoFish' opens a new window on brain diseases
Date:12/5/2012

Scientists have demonstrated a new way to investigate mechanisms at work in Alzheimer's and other neurodegenerative diseases, which also could prove useful in the search for effective drugs. For new insights, they turned to the zebrafish, which is transparent in the early stages of its life. The researchers developed a transgenic variety, the "MitoFish," that enables them to see within individual neurons of living animals how brain diseases disturb the transport of mitochondria, the power plants of the cell.

Neurodegenerative diseases such as Alzheimer's, Parkinson's, ALS (amyotrophic lateral sclerosis), and MS (multiple sclerosis) are quite different in their effects on patients' cognitive and motor functions, behavior, and prognosis. Yet on the level of individual neurons, common mechanisms can be observed that either cause or accompany nerve degeneration in a number of different diseases. One of these is a disturbance in the transport of mitochondria, organelles that play several vital roles in the life of a cell above all, delivering energy where it is needed. And in a neuron, an extremely power-hungry cell, that means moving mitochondria all the way down its longest extension, the axon. Studying mitochondria transport in other animal models of neurodegenerative disease, particularly in mice, has been revealing. But the MitoFish model opens up new possibilities.

The new model was jointly developed in the labs of Prof. Thomas Misgeld of the Technische Universitt Mnchen (TUM) and Dr. Bettina Schmid, a senior scientist of the German Center for Neurodegenerative Diseases (DZNE) based at the institute of LMU Prof. Christian Haass. "This collaboration has provided a system," Misgeld says, "with which we can try to understand the traffic rules or the life cycle of a given organelle, in this case mitochondria, in the context of a nerve cell that's existing in its physiological environment, where it is developing and changing. Most of these t
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Contact: Patrick Regan
regan@zv.tum.de
49-089-289-10515
Technische Universitaet Muenchen
Source:Eurekalert  

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