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Bone marrow-derived cells differentiate in the brain through mechanisms of plasticity
Date:12/19/2011

Tampa, Fla. (Dec, 19 2011) Bone marrow-derived stem cells (BMDCs) have been recognized as a source for transplantation because they can contribute to different cell populations in a variety of organs under both normal and pathological conditions. Many BMDC studies have been aimed at repairing damaged brain tissue or helping to restore lost neural function, with much research focused on BMDC transplants to the cerebellum at the back of the brain. In a recent study, a research team from Spain has found that BMDCs, can contribute to a variety of neural cell types in other areas of the brain as well, including the olfactory bulb, because of a mechanism of "plasticity".

Their results are published in the current issue of Cell Transplantation (20:8) now freely available on-line at http://www.ingentaconnect.com/content/cog/ct/.

"To our knowledge, ours is the first work reporting the BMDC's contribution to the olfactory neurons," said study corresponding author Dr. Eduardo Weruaga of the University of Salamanca, Spain. "We have shown for the first time how BMDCs contribute to the central nervous system in different ways in the same animal depending on the region and cell-specific factors."

In this study, researchers grafted bone marrow cells into mutant mice suffering from the degeneration of specific neuronal populations at different ages, then compared them to similarly transplanted healthy controls. An increase in the number of BMDCs was found along the lifespan in both experimental groups. Six weeks after transplantation, however, more bone marrow-derived microglial cells were observed in the olfactory bulbs of the test animals where the degeneration of mitral cells was still in progress. The difference was not observed in the cerebellum where cell degeneration had been completed.

"Our findings demonstrate that the degree of neurodegenerative environment can foster the recruitment of
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Contact: David Eve
celltransplantation@gmail.com
Cell Transplantation Center of Excellence for Aging and Brain Repair
Source:Eurekalert

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