Alpha-Pinene Ameliorates Memory Deficits in 3-Nitropropionic Acid-Induced Rat Model of Huntington's Disease.

Area of Science:

• Neuroscience
• Pharmacology
• Molecular Biology

Background:

• Huntington's disease (HD) involves memory impairment, potentially linked to altered neurotrophin levels.
• Alpha-pinene (APN), a natural monoterpene, shows promise in neurodegenerative disorder models.

Purpose of the Study:

• To investigate the therapeutic potential of alpha-pinene (APN) in mitigating memory deficits in a 3-nitropropionic acid (3-NP) induced rat model of Huntington's disease (HD).

Main Methods:

• Rats were administered 3-nitropropionic acid (3-NP) to induce HD-like symptoms, with varying doses of alpha-pinene (APN) administered concurrently.
• Cognitive function was assessed using the Y-maze and Morris water maze (MWM) tests.
• Gene expression of neurotrophins (BDNF), their receptors (TrkA, TrkB, P75 NTR), and CREB was quantified using RT-qPCR in brain tissue.

Main Results:

• Alpha-pinene (APN) administration significantly ameliorated the memory impairments induced by 3-NP in rats across all tested doses.
• APN treatment dose-dependently increased the expression of BDNF, TrkA, TrkB, and CREB.
• Conversely, APN significantly decreased the expression of P75 NTR in the brain cortex and hippocampus.

Conclusions:

• Alpha-pinene (APN) demonstrates neuroprotective effects against 3-NP-induced memory deficits in an HD rat model.
• The findings suggest APN alleviates memory problems by modulating neurotrophin signaling pathways, enhancing beneficial pathways (BDNF/TrkB) and reducing detrimental ones (P75 NTR).