Effects of Scutellaria baicalensis on neurogenesis in the hippocampal dentate gyrus and on spatial memory of adult rats

Sun Hwa Lee, Byung soo Ahn, Bong soo Lim, Seong Kyu Kim, Sam Ki Kim, Dae Il Lee, Sung Rae Cho, Deok Gon Kim, Jae Bok Han, Byung Il Min

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Abstract

We investigated the effects of ethanol extracted Scutellaria baicalensis (EESB) on spatial memory function and neurogenesis in the hippocampal dentate gyrus. Adult Sprague-Dawley rats were orally administered 50, 100, or 200 mg/kg of EESB for 6 successive days. The radial-arm maze test showed that 200 mg/kg of EESB improved the spatial memory of adult rats. Confocal microscopy results showed that 100 mg/kg of EESB increased the number of bromodeoxyuridine (BrdU)- and neuron-specific nuclear protein-positive cells in the granular cell layer, and that 100 and 200 mg/kg of EESB increased the number of BrdU-/neuron-specific nuclear protein-positive cells in the sub-granular zone. 200 mg/kg of EESB increased the number of BrdU-/glial fibrillary acid pro-tein-positive cells in the subgranular zone. These findings indicate that EESB can effectively pro-mote neurogenesis in the hippocampal dentate gyrus and improve spatial memory function.

Original languageEnglish
Pages (from-to)2085-2093
Number of pages9
JournalNeural Regeneration Research
Volume6
Issue number27
DOIs
Publication statusPublished - 2011 Sep

All Science Journal Classification (ASJC) codes

  • Developmental Neuroscience

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    Lee, S. H., Ahn, B. S., Lim, B. S., Kim, S. K., Kim, S. K., Lee, D. I., Cho, S. R., Kim, D. G., Han, J. B., & Min, B. I. (2011). Effects of Scutellaria baicalensis on neurogenesis in the hippocampal dentate gyrus and on spatial memory of adult rats. Neural Regeneration Research, 6(27), 2085-2093. https://doi.org/10.3969/j.issn.1673-5374.