Exp Neurobiol.  2011 Sep;20(3):137-143. 10.5607/en.2011.20.3.137.

Neuroprotective Effect of Lucium chinense Fruit on Trimethyltin-Induced Learning and Memory Deficits in the Rats

Affiliations
  • 1Basic Oriental Medical Science and Acupuncture and Meridian Science Research Center, Kyung Hee University, Seoul 130-701, Korea.
  • 2Department of Integrative Medicine and Research Center of Behavioral Medicine, College of Medicine, The Catholic University of Korea, Seoul 137-701, Korea.

Abstract

In order to the neuroprotective effect of Lycium chinense fruit (LCF), the present study examined the effects of Lycium chinense fruit on learning and memory in Morris water maze task and the choline acetyltransferase (ChAT) and cyclic adenosine monophosphate (cAMP) of rats with trimethyltin (TMT)-induced neuronal and cognitive impairments. The rats were randomly divided into the following groups: naive rat (Normal), TMT injection+saline administered rat (control) and TMT injection+LCF administered rat (LCF). Rats were administered with saline or LCF (100 mg/kg, p.o.) daily for 2 weeks, followed by their training to the tasks. In the water maze test, the animals were trained to find a platform in a fixed position during 6d and then received 60s probe trial on the 7th day following removal of platform from the pool. Rats with TMT injection showed impaired learning and memory of the tasks and treatment with LCF (p<0.01) produced a significant improvement in escape latency to find the platform in the Morris water maze at the 2nd day. Consistent with behavioral data, treatment with LCF also slightly reduced the loss of ChAT and cAMP in the hippocampus compared to the control group. These results demonstrated that LCF has a protective effect against TMT-induced neuronal and cognitive impairments. The present study suggests that LCF might be useful in the treatment of TMT-induced learning and memory deficit.

Keyword

trimethyltin (TMT); choline acetyltransferase (ChAT); cyclic adenosine monophosphate (cAMP); Lycium chinense fruit (LCF)

MeSH Terms

Adenosine Monophosphate
Animals
Choline O-Acetyltransferase
Fruit
Hippocampus
Learning
Lycium
Memory
Memory Disorders
Neurons
Neuroprotective Agents
Rats
Trimethyltin Compounds
United Nations
Water
Adenosine Monophosphate
Choline O-Acetyltransferase
Neuroprotective Agents
Trimethyltin Compounds
Water
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