Positive modulation of cognition and mood in the healthy elderly volunteer following the administration of Centella asiatica
2008
Wattanathorn, Jintanaporn | Mator, Lugkana | Muchimapura, Supaporn | Tongun, Terdthai | Pasuriwong, Orapin | Piyawatkul, Nawanant | Yimtae, Kwanchanok | Bangʻō̜n Sīphānitkunchai. | Singkhoraard, Jintana
Aims of this study: Centella asiatica has a reputation to restore decline cognitive function in traditional medicine and in animal model. However, little evidence regarding the efficacy of Centella asiatica from systematized trials is available. Therefore, the present randomized, placebo-controlled, double-blind study investigated the effect of Centella asiatica on cognitive function of healthy elderly volunteer. Materials and methods: Twenty-eight healthy elderly participants received the plant extract at various doses ranging 250, 500 and 750mg once daily for 2 months. Cognitive performance was assessed using the computerized test battery and event-related potential whereas mood was assessed using Bond-Lader visual analogue scales prior to the trial and after single, 1 and 2 months after treatment. Results: The results showed that the high dose of the plant extract enhanced working memory and increased N100 component amplitude of event-related potential. Improvements of self-rated mood were also found following the Centella asiatica treatment. Conclusion: Therefore, the present findings suggest the potential of Centella asiatica to attenuate the age-related decline in cognitive function and mood disorder in the healthy elderly. However, the precise mechanism(s) underlying these effects still require further investigation.
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