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Article Publish Status: FREE
Abstract Title:

Effects of Asiatic Acid on Spatial Working Memory and Cell Proliferation in the Adult Rat Hippocampus.

Abstract Source:

Nutrients. 2015 Oct 5 ;7(10):8413-23. Epub 2015 Oct 5. PMID: 26445061

Abstract Author(s):

Apiwat Sirichoat, Wunnee Chaijaroonkhanarak, Parichat Prachaney, Wanassanan Pannangrong, Ratana Leksomboon, Amnart Chaichun, Peter Wigmore, Jariya Umka Welbat

Article Affiliation:

Apiwat Sirichoat

Abstract:

Asiatic acid is a pentacyclic triterpene from Centella asiatica. Previous studies have reported that asiatic acid exhibits antioxidant and neuroprotective activities in cell culture. It also prevents memory deficits in animal models. The objective of this study was to investigate the relationship between spatial working memory and changes in cell proliferation within the hippocampus after administration of asiatic acid to male Spraque-Dawley rats. Control rats received vehicle (propylene glycol) while treated rats received asiatic acid (30 mg/kg) orally for 14 or 28 days. Spatial memory was determined using the novel object location (NOL) test. In animals administered asiatic acid for both 14 and 28 days, the number of Ki-67 positive cells in the subgranular zone of the dentate gyrus was significantly higher than in control animals. This was associated with a significant increase in their ability to discriminate between novel and familiar object locations in a novel object discrimination task, a hippocampus-dependent spatial memory test. Administration of asiatic acid also significantly increased doublecortin (DCX) and Notch1 protein levels in the hippocampus. These findings demonstrate that asiatic acid treatment may be a potent cognitive enhancer which improves hippocampal-dependent spatial memory, likely by increasing hippocampal neurogenesis.

Study Type : Animal Study

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