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Phosphatidylserine reverses reserpine-induced amnesia
C S Alves1, R Andreatini, C da Cunha
1Laboratorio de Fisiologia e Farmacologia do SNC-Centro Politecnico, Department of Pharmacology, Federal University of Paraná, Jardim das Americas--PR, Caixa Postal 19.031, CEP 81.531-990, Curitiba, Brazil.
European Journal of Pharmacology
|September 12, 2000
Summary
Phosphatidylserine (PS) administration reverses memory loss in rats caused by reserpine, a drug that depletes catecholamines. Both acute and long-term PS treatment improved memory retention in passive avoidance tasks.
Area of Science:
- Neuroscience
- Pharmacology
- Biochemistry
Background:
- Reserpine administration causes memory deficits by depleting catecholamines.
- Phosphatidylserine (PS) is a phospholipid with potential neuroprotective effects.
Purpose of the Study:
- To investigate the efficacy of phosphatidylserine (PS) in reversing reserpine-induced amnesia in rats.
- To determine if acute or long-term PS treatment can prevent memory impairment.
Main Methods:
- Rats were trained in a passive avoidance task and treated with reserpine.
- Phosphatidylserine (PS) was administered acutely (pre- or post-training) or chronically (7 days).
- Memory retention was tested 24 hours and 1 week after training.
Main Results:
- Acute phosphatidylserine (PS) administration before or after training reversed reserpine-induced amnesia.
- Long-term pretreatment with phosphatidylserine (PS) also protected against memory deficits.
- The memory impairment induced by reserpine was attenuated by PS treatment.
Conclusions:
- Phosphatidylserine (PS) effectively reverses memory deficits caused by catecholamine depletion.
- Both acute and long-term phosphatidylserine (PS) administration are beneficial for memory retention.
- This phospholipid shows potential as a therapeutic agent for memory impairments.