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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Entorhinal cortex lesion does not alter reelin messenger RNA expression in the dentate gyrus of young and adult rats.

The extracellular matrix protein reelin plays an important role in neuronal pattern formation and axonal collateralization during the development of the central nervous system. With the concept that reelin might also be important for axonal growth in the injured nervous system we investigated whether reelin is re-expressed in areas of collateral sprouting after brain injury. The expression of reelin messenger RNA was studied in the denervated fascia dentata of adult rats one, four, seven and 14 days following entorhinal cortex lesion. In adult control animals, in situ hybridization histochemistry with digoxigenin-labeled reelin riboprobes revealed reelin messenger RNA expression in neurons located in the outer molecular layer and beneath the granule cell layer of the dentate gyrus. After entorhinal cortex lesion, this expression pattern did not change during the whole post-lesional time period investigated despite a strong glial activation and reactive sprouting in the outer molecular layer of the dentate gyrus as visualized by immunohistochemistry for glial fibrillary acidic protein and acetylcholinesterase histochemistry, respectively. The expression of reelin messenger RNA was also unaffected by entorhinal cortex lesion in the dentate gyrus of young animals (postnatal day seven), where an even stronger sprouting response occurs.[1]

References

  1. Entorhinal cortex lesion does not alter reelin messenger RNA expression in the dentate gyrus of young and adult rats. Haas, C.A., Deller, T., Krsnik, Z., Tielsch, A., Woods, A., Frotscher, M. Neuroscience (2000) [Pubmed]
 
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