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[The distribution of mexidol in the rat's brain and its subcellular fractions]
Objective:
To study the penetration of mexidol through the blood-brain barrier into different brain compartments and cell mitochondria.
Material And Methods:
The study was carried out on adult male Wistar rats using the drug mexidol ("Farmasoft" Russia). The penetration of mexidol into different compartments of the brain (the cortex, cerebellum, thalamus and medulla) and distribution between mitochondrial and cytoplasmic fractions of the cerebral cortex was studied. The concentration of mexidol in blood plasma and brain tissues was measured using HPLC.
Results And Conclusion:
Mexidol penetrated through the blood-brain barrier into brain compartments of rats with the maximal accumulation in the cortex. In the brain cortex cells, mexidol was identified in the cytoplasmic and mitochondrial fractions.
Insights
Mexidol effectively crosses the blood-brain barrier, accumulating most in the rat cortex. This neuroprotective drug is found in both cytoplasmic and mitochondrial fractions within brain cells.
Area of Science:
- Neuropharmacology
- Biochemistry
Background:
- The blood-brain barrier (BBB) restricts the entry of many substances into the central nervous system.
- Understanding drug penetration into brain compartments is crucial for developing effective neurological treatments.
- Mexidol is a drug with known antioxidant and anti-hypoxic properties.
Purpose of the Study:
- To investigate the extent and distribution of mexidol penetration across the BBB.
- To quantify mexidol accumulation in various rat brain regions.
- To determine the subcellular localization of mexidol within cerebral cortex cells, specifically in mitochondrial and cytoplasmic fractions.
Main Methods:
- Adult male Wistar rats were administered mexidol.
- High-performance liquid chromatography (HPLC) was used to measure mexidol concentrations.
- Concentrations were analyzed in blood plasma, different brain compartments (cortex, cerebellum, thalamus, medulla), and subcellular fractions (mitochondrial and cytoplasmic) of the cerebral cortex.
Main Results:
- Mexidol demonstrated significant penetration through the blood-brain barrier into all studied brain compartments.
- The highest concentration of mexidol was observed in the cerebral cortex.
- Within cerebral cortex cells, mexidol was detected in both the cytoplasmic and mitochondrial fractions.
Conclusions:
- Mexidol effectively crosses the BBB in rats, reaching various brain regions.
- The cerebral cortex shows maximal accumulation of mexidol.
- Mexidol's presence in both cytoplasmic and mitochondrial fractions suggests potential therapeutic actions at the cellular level within the brain.
