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Neuronal marker recovery after Simvastatin treatment in dementia in the rat brain: in vivo magnetic resonance study.

Abstract：

:The aim of study was to search for new biomarkers with a magnetic resonance technique to identify the early stages of dementia, induced by D-galactose, and evaluate Simvastatin therapy. Localized proton magnetic resonance spectroscopy measurements showed a significant decrease in the concentration of N-acetylaspartate+N-acetylaspartylglutamate and myo-inositol in the D-galactose group compared to the control group, and, conversely, an increase of N-acetylaspartate+N-acetylaspartylglutamate in the D-galactose/Simvastatin group. Using a saturation transfer experiment, with phosphorus magnetic resonance spectroscopy, we observed a significant elevation of the forward rate constant of the creatine kinase reaction in the brains of the D-galactose group compared to controls, and subsequently, a significant reduction of this reaction in the D-galactose/Simvastatin group. Spatial learning and memory were evaluated using the modified Morris water maze test. The dynamics of the learning process represented by the learning index revealed a significant reduction in learning in the D-galactose group, but the deficits as a consequence of the D-galactose effects were recovered in the D-galactose/Simvastatin group, in which the learning dynamics resembled those of the control group. By determining the thiobarbituric acid reactive substances and total coenzyme Q9 in plasma, we have shown that long-term administration of D-galactose created conditions for oxidative stress, and that the administration of Simvastatin decreased oxidative stress in plasma. Volumetry analyses from the hippocampal area show a reduction in the segmented area in the D-galactose group, compared with the control group, and an enlarged area in the hippocampus in the d-galactose/Simvastatin group.

journal_name

Behav Brain Res

journal_title

Behavioural brain research

authors

Tušková R,Lipták B,Szomolányi P,Vančová O,Uličná O,Sumbalová Z,Kucharská J,Dubovický M,Trattnig S,Liptaj T,Kašparová S

doi

10.1016/j.bbr.2015.02.016

subject

Has Abstract

pub_date

2015-05-01 00:00:00

pages

257-64

eissn

0166-4328

issn

1872-7549

pii

S0166-4328(15)00095-9

journal_volume

284

pub_type

杂志文章

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