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

Development-related expression of AKAP79 in the striatal compartments of the human brain.

The expression of AKAP79 which tethers regulatory proteins within postsynaptic densities has been studied in the two striatal compartments, i.e. patches and matrix, at different stages of the developing human brain by means of immunohistochemistry. The two striatal compartments exhibit various intensities of diffuse immunolabelling and a different number of immunoreactive nerve cells. From the 14th to 20th gestational week a nearly homogeneous distribution of immunoreactive structures in the two compartments of the striatum is seen. Thereafter, a decrease in immunoreactive structures within the matrix is observed (22nd-25th week, intermediate stage). From the 27th week onwards the patch compartment contains distinctly more immunoreactive puncta and nerve cells. Thus, the patches stand out clearly in the immunopreparations. This distribution pattern does not change during proceeding development. AKAP79-immunoreactive nerve cells closely resemble those constituting the class of medium-sized inhibitory projection neurons that receive the dopaminergic input of the striatum. Literature data suggest that AKAP79 may be functionally attributed to dopaminergic inputs. Accordingly, the patterns of AKAP79 expression can at least in part be correlated with the sequential occurrence of dopaminergic innervation. The mature matrix containing a dopaminergic innervation being as dense as in the patches displays distinctly less AKAP79-immunoreactive neurons and puncta than the patches. This discrepancy might indicate that a subpopulation of matrix neurons may, despite dopaminergic input, not express AKAP79.[1]

References

  1. Development-related expression of AKAP79 in the striatal compartments of the human brain. Ulfig, N., Neudörfer, F., Bohl, J. Cells Tissues Organs (Print) (2001) [Pubmed]
 
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