0541890 - FGÚ 2022 RIV CH eng J - Journal Article
Chvojková, Markéta - Kubová, Hana - Valeš, Karel
Effects of Dizocilpine, Midazolam and Their Co-Application on the Trimethyltin (TMT)-Induced Rat Model of Cognitive Deficit.
Brain Sciences. Roč. 11, č. 3 (2021), č. článku 400. E-ISSN 2076-3425
R&D Projects: GA ČR(CZ) GA18-09296S; GA ČR(CZ) GA14-20613S; GA MZd(CZ) NU20-04-00389; GA MZd(CZ) EF16_025/0007444
Institutional support: RVO:67985823
Keywords : cognitive function * trimethyltin * hippocampus * NMDA receptor * GABA A receptor * dementia * combination therapy * Alzheimer’s disease * neurodegeneration * neuroprotection
OECD category: Neurosciences (including psychophysiology
Impact factor: 3.333, year: 2021 ; AIS: 0.801, rok: 2021
Method of publishing: Open access
Result website:
https://www.mdpi.com/2076-3425/11/3/400DOI: https://doi.org/10.3390/brainsci11030400

Research of treatment options addressing the cognitive deficit associated with neurodegenerative disorders is of particular importance. Application of trimethyltin (TMT) to rats represents a promising model replicating multiple relevant features of such disorders. N-methyl-D-aspartate (NMDA) receptor antagonists and gamma-aminobutyric acid type A (GABA(A)) receptor potentiators have been reported to alleviate the TMT-induced cognitive deficit. These compounds may provide synergistic interactions in other models. The aim of this study was to investigate, whether co-application of NMDA receptor antagonist dizocilpine (MK-801) and GABA(A) receptor potentiator midazolam would be associated with an improved effect on the TMT-induced model of cognitive deficit. Wistar rats injected with TMT were repeatedly (12 days) treated with MK-801, midazolam, or both. Subsequently, cognitive performance was assessed. Finally, after a 17-day drug-free period, hippocampal neurodegeneration (neuronal density in CA2/3 subfield in the dorsal hippocampus, dentate gyrus morphometry) were analyzed. All three protective treatments induced similar degree of therapeutic effect in Morris water maze. The results of histological analyses were suggestive of minor protective effect of the combined treatment (MK-801 and midazolam), while these compounds alone were largely ineffective at this time point. Therefore, in terms of mitigation of cognitive deficit, the combined treatment was not associated with improved effect.
Permanent Link: http://hdl.handle.net/11104/0319385