Ginsenoside Rh2 reverses sleep deprivation‐induced cognitive deficit in mice

Graphical abstract Figure. No Caption available. HighlightsGinsenosides Rh2 may protect against the spatial and non‐spatial memory deficit induced by SD.Ginsenosides Rh2 could restore reduced SOD, TAR activities and attenuate the elevated MDA level in the serum of SD mice.Ginsenosides Rh2 could significantly decrease LPO level and increase GSH content in the cortex and hippocampus of SD mice.Our findings suggest that Ginsenosides Rh2 is indicated to may be a novel candidate in treating neurodegenerative disorders. Abstract Sleep deprivation (SD) negatively caused cognitive deficit, which was associated with oxidative stress induced damage. Ginsenoside Rh2 had the ability to protect against damage caused by reactive oxygen species in vitro, showing antioxidant property. Therefore, it was hypothesized that Ginsenoside Rh2 could prevent SD‐induced cognitive deficit via its antioxidant properties. In this study, the effect of Ginsenoside Rh2 on memory impairment induced by sleep deprivation was investigated. The mice were sleep deprived continuously for 14 days using our self‐made Sleep Interruption Apparatus (SIA). Ginsenoside Rh2 was administered intraperitoneally at two doses (20 and 40 &mgr;mol/kg) for 20 days. Thereafter, behavioral studies were conducted to test the learning and memory ability using object location recognition (OLR) experiment and passive avoidance (PA) test. Additionally, the oxidative stress parameters in the serum and the brain tissues (cortex and hippocampus) were assessed, including the superoxide dismutase (SOD) enzyme activity, the total antioxidant reactivity (TAR), the malondialdehyde (MDA) level, the glutathione (GSH) level, and the lipid peroxidation (LPO) content. The results revealed that SD impaired both spatial and non‐spatial memory (P < 0.05). Treatment with Ginsenoside Rh2 at both doses prevented memory impairment induced by SD. Moreover, Ginsenoside Rh2 normalized the reduction of SOD and TAR activities in the serum (P < 0.01) and the decrease of GSH content in both the cortex and hippocampus (P < 0.05) induced by SD. Furthermore, Ginsenoside Rh2 significantly decreased the MDA level in the serum (P < 0.05) and the LPO content in both the cortex and hippocampus (P < 0.05) compared to SD group. In conclusion, sleep deprivation impaired both spatial and non‐spatial memory and Ginsenoside Rh2 reversed this impairment, probably by preventing the oxidative stress damage in the body, including the serum and brain during sleep deprivation.

• Publication year

  2018

• Venue

  Behavioural Brain Research

• Publication date

  2018-09-01

• Fields of study

  Medicine

• Identifiers
  DOI 10.1016/j.bbr.2018.03.005PMID 29544964
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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