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Changes in glutamate-related enzyme activities in the striatum of the rat following lesion of corticostriatal fibres

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Summary

The behaviour of enzymes putatively involved in glutamate/aspartate transmitter metabolism (glutamate dehydrogenase, aspartate aminotransferase, alanine aminotransferase,γ-glutamyltranspeptidase) was studied in the striatum 3, 7, 14 days and 7 weeks after mechanical destruction of corticostriatal fibres. For a period of up to seven days after unilateral lesion, enzyme activities were significantly diminished (by up to 13% based on protein) in the ipsilateral striatum as compared to the striatum of the intact side. Later, the enzyme activities in the ipsilateral striatum recovered. After seven weeks, an increase was observed for glutamate dehydrogenase activity, whereas the activity of alanine aminotransferase showed a transient rise at the end of the second week. The decrease in enzyme levels is interpreted as being attributable to the destruction of nerve endings which are considered to be glutamatergic, interfering with various compensating processes (e.g. glial cell proliferation) which occur with advancing times after lesion.

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  1. Institute of Biology, Medical Academy of Magdeburg, Erich-Weinert-Str. 3, DDR-3014, Magdeburg, German Democratic Republic

    F. Rothe & G. Wolf

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  1. F. Rothe
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  2. G. Wolf
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Rothe, F., Wolf, G. Changes in glutamate-related enzyme activities in the striatum of the rat following lesion of corticostriatal fibres. Exp Brain Res 79, 400–404 (1990). https://doi.org/10.1007/BF00608251

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  • DOI: https://doi.org/10.1007/BF00608251

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