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National Repository of Grey Literature 1 records found  Search took 0.00 seconds. 
The role of link proteins in the stabilization of the brain extracellular matrix and in formation and maintaining of the perineuronal nets
 Suchá, Petra ; Vargová, Lýdia (advisor) ; Jendelová, Pavla (referee)
The brain extracellular space (ECS) contains specified macromolecules forming the extracellular matrix (ECM), containing a high amount of negative charges that could bind water or other soluble ions and molecules diffusing within the ECS. In specific brain areas, the ECM molecules form a condensed, reticular-like structure of perineuronal nets (PNNs). It has been found that PNNs appear at the end of the critical period, when they stabilize the synapses and terminate their plasticity and may have also neuroprotective function. To study the role of brain link protein 2 (Bral2) in stabilizing the ECM complexes, we employed the real-time iontophoretic method and immunohistochemical analysis to show the difference in the ECS diffusion parameters and level of expression of the ECM molecules between the wild type and Bral2-deficient mice. We also compared changes in the ECS diffusion parameters induced by Bral2 deficiency with those appeared after enzymatic destruction of the ECM by the chondroitinase ABC (chABC). In the Bral2-deficient mice, we discovered significantly decreased values of tortuosity in the trapezoid body. This difference was age related and did not manifest itself in young mice. Immunohistochemical analysis showed that inferior colliculus does not contain Bral2-brevican based...
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