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Geniposide Alleviates Traumatic Brain Injury in Rats Via Anti-Inflammatory Effect and MAPK/NF-kB Inhibition

  • Jianwei Yuan
  • Jinghua Zhang
  • Juan Cao
  • Guangxing Wang
  • Hansheng BaiEmail author
Original Research
  • 40 Downloads

Abstract

We aimed to investigate whether geniposide, a main component extracted from Gardenia jasminoides Ellis fruit, could exert neuroprotective functions against traumatic brain injury (TBI). Enzyme-linked immunosorbent assay (ELISA) was used for detection of plasma cytokines. Real-time polymerase chain reaction (RT-PCR) was employed for measurements of mRNA levels of cytokines. Neurological outcomes were evaluated by modified neurological severity score (mNSS) and Rota-Rod. Blood–brain barrier (BBB) integrity and brain edema were assessed. Protein expression was tested by Western blot. The plasma levels of interleukin (IL)-1β, IL-6, IL-8 and IL-10 were all elevated in patients with TBI compared to those of healthy controls. TBI rats treated with geniposide showed lower mNSS and longer fall latency time than untreated TBI rats. BBB integrity was maintained and brain edema was reduced by geniposide treatment in TBI rats. Plasma levels of IL-1β, IL-6 and IL-8 were significantly repressed by geniposide treatment in TBI rats, whereas IL-10 level was upregulated. mRNA expression levels of these cytokines in the brain tissues of TBI rats exhibited the same trends of changes. By testing p38 mitogen-activated protein kinase and NF-κB p65 activities, it was observed that phosphorylated (p)-p38 and p-p65 were dramatically inhibited by geniposide. In conclusion, geniposide exerts neuroprotective functions against TBI by inhibiting p-p38 and p-p65.

Keywords

Mitogen-activated protein kinase (MAPK) NF-kappaB (NF-κB) Traumatic brain injury (TBI) Geniposide 

Notes

Acknowledgements

Not applicable.

Author Contributions

Did the experiments and analyzed the data: JY, JZ, JC and GW; Designed the study and wrote the manuscript: HB. All authors approved the final submission.

Funding

None.

Compliance with Ethical Standards

Conflict of interest

All authors declare that they have no conflict of interest.

Informed Consent

All participants in this study were informed and gave an informed written consent.

Research Involving Human Participants and/or Animals

All applicable international, national, and/or institutional guidelines for the care and use of animals were followed.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Jianwei Yuan
    • 1
  • Jinghua Zhang
    • 2
  • Juan Cao
    • 2
  • Guangxing Wang
    • 1
  • Hansheng Bai
    • 1
    Email author
  1. 1.Heze Municipal Hospital of Shandong ProvinceHezeChina
  2. 2.Heze Medical CollegeHezeChina

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