EFFECTS OF DIMETHYL SULFOXIDE ON HIPPOCAMPAL ACTIVITY IN A ROTENONE-INDUCED RAT MODEL OF PARKINSON'S DISEASE

Area of Science:

• Neuroscience
• Pharmacology

Background:

• Parkinson's disease (PD) is a prevalent age-related neurodegenerative disorder.
• Rotenone is used to induce PD-like symptoms in animal models.
• Dimethyl sulfoxide (DMSO) facilitates drug penetration into the central nervous system.

Purpose of the Study:

• To investigate the neuroprotective effects of DMSO in a rotenone-induced rat model of Parkinson's disease.
• To assess the impact of DMSO on hippocampal neuronal activity and structure.

Main Methods:

• Rats were administered rotenone to model Parkinson's disease.
• Dimethyl sulfoxide (DMSO) was administered intraperitoneally (1 ml/kg) for 3 weeks.
• Hippocampal electrophysiology (evoked spike activities) and histological analysis (pyramidal cells, Nissl bodies) were performed.

Main Results:

• DMSO treatment significantly improved pyramidal cells and Nissl bodies in the hippocampal CA1 and CA3 areas of rotenone-administered rats.
• Both rotenone and DMSO enhanced paired-pulse facilitation (TP), but DMSO induced a more pronounced depression (TD) effect.
• Inhibitory effects were observed in the hippocampus following high-frequency stimulation of the entorhinal cortex.

Conclusions:

• DMSO demonstrates neuroprotective properties in a rat model of Parkinson's disease.
• DMSO may modulate hippocampal synaptic plasticity, warranting further investigation into its therapeutic potential for PD.