Effect of handling on ATP utilization of cerebral Na,K-ATPase in rats with trimethyltin-induced neurodegeneration

Previously it was shown that for reduction of anxiety and stress of experimental animals, preventive handling seems to be one of the most effective methods. The present study was oriented on Na,K-ATPase, a key enzyme for maintaining proper concentrations of intracellular sodium and potassium ions. M...

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Bibliographic Details
Published in:Molecular and cellular biochemistry 2021-12, Vol.476 (12), p.4323-4330
Main Authors: Kalocayova, Barbora, Snurikova, Denisa, Vlkovicova, Jana, Navarova-Stara, Veronika, Michalikova, Dominika, Ujhazy, Eduard, Gasparova, Zdenka, Vrbjar, Norbert
Format: Article
Language:English
Subjects:
Adenosine triphosphatase
Adenosine Triphosphate - metabolism
Animal models
Animals
ATP
Biochemistry
Biomedical and Life Sciences
Brain
Brain - metabolism
Brain - pathology
Cardiology
Catalytic subunits
Cerebral cortex
Cerebral Cortex - metabolism
Cortex (frontal)
Disease Models, Animal
Energy resources
Energy sources
Enzyme kinetics
Glial cells
Handling
Homeostasis
Life Sciences
Male
Medical Biochemistry
Memory tasks
Na+/K+-exchanging ATPase
Nervous system diseases
Neurodegeneration
Neurodegenerative diseases
Neurodegenerative Diseases - chemically induced
Neurodegenerative Diseases - metabolism
Neurodegenerative Diseases - pathology
Neurodegenerative Diseases - prevention & control
Oncology
Potassium
Rats
Rats, Wistar
Sodium
Sodium-Potassium-Exchanging ATPase - metabolism
Spatial analysis
Spatial memory
Spatial Memory - physiology
Stress (Psychology)
Substrates
Trimethyltin
Trimethyltin Compounds - toxicity
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Summary:Previously it was shown that for reduction of anxiety and stress of experimental animals, preventive handling seems to be one of the most effective methods. The present study was oriented on Na,K-ATPase, a key enzyme for maintaining proper concentrations of intracellular sodium and potassium ions. Malfunction of this enzyme has an essential role in the development of neurodegenerative diseases. It is known that this enzyme requires approximately 50% of the energy available to the brain. Therefore in the present study utilization of the energy source ATP by Na,K-ATPase in the frontal cerebral cortex, using the method of enzyme kinetics was investigated. As a model of neurodegeneration treatment with trimethyltin (TMT) was applied. Daily handling (10 min/day) of healthy rats and rats suffering neurodegeneration induced by administration of TMT in a dose of (7.5 mg/kg), at postnatal days 60–102 altered the expression of catalytic subunits of Na,K-ATPase as well as kinetic properties of this enzyme in the frontal cerebral cortex of adult male Wistar rats. In addition to the previously published beneficial effect on spatial memory, daily treatment of rats was accompanied by improved maintenance of sodium homeostasis in the frontal cortex. The key system responsible for this process, Na,K-ATPase, was able to utilize better the energy substrate ATP. In rats, manipulation of TMT-induced neurodegeneration promoted the expression of the α2 isoform of the enzyme, which is typical for glial cells. In healthy rats, manipulation was followed by increased expression of the α3 subunit, which is typical of neurons.
ISSN:0300-8177
1573-4919
DOI:10.1007/s11010-021-04239-6