• Jeon-Kyung Kim, Eun Kyu Lee, Chu Hyun Bae, Soo-Dong Park, Jae-Jung Shim, Jung-Lyoul Lee, Hye Hyun Yoo, and Dong-Hyun Kim.
• Neurobiota Research Center, College of Pharmacy, Kyung Hee University, Seoul 02447, Korea.
• Am. J. Chin. Med. 2021 Jan 1; 49 (8): 1897-1912.

AbstractGinsenosides of orally administered red ginseng (RG) extracts are metabolized and absorbed into blood. Here, we examined the pharmacokinetic profiles of ginsenosides Rd and Rg3 in mice orally gavaged with RG, then investigated the correlations between these and gut microbiota composition. RG water extract (RGw), RG ethanol extract (RGe), or fermented RGe (fRGe) was orally gavaged in mice. The plasma concentrations of the ginsenosides were determined, and the gut microbiota composition was analyzed. RGe and fRGe-treated mice showed higher plasma concentration levels of ginsenoside Rd compared with RGw-treated mice; particularly, ginsenoside Rd absorbed was substantially high in fRGe-treated mice. Oral administration of RG extracts modified the gut microbiota composition; the modified gut microbiota, such as Peptococcaceae, Rikenellaceae, and Hungateiclostridiaceae, were closely correlated with the absorption of ginsenosides, such as Rd and Rg3. These results suggest that oral administration of RG extracts can modify gut microbiome, which may consequently affect the bioavailability of RG ginsenosides.

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