Jingshu Keli and its Components Notoginsenoside R1 and Ginsenoside Rb1 Alleviate the Symptoms of Cervical Myelopathy through Kir3.1 Mediated Mechanisms

Author(s): Renjie Yan, Rui Chen, Jiahui Wang, Jian Shi, Wagner Ferreira dos Santos, Zhiru Xu, Li Liu*.

Journal Name: CNS & Neurological Disorders - Drug Targets
(Formerly Current Drug Targets - CNS & Neurological Disorders)

Volume 18 , Issue 8 , 2019

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Graphical Abstract:


Abstract:

Background & Objective: Cervical Spondylotic Myelopathy (CSM) is one of the most serious spinal cord disorders in adults. Pharmacological modulation of ion channels is a common strategy to interfere with CSM and prevent neuronal damage.

Methods: Here, we investigated the effects of Jingshu Keli (JSKL), a traditional Chinese herbal formula, on CSM-related gait abnormality, mechanical allodynia and thermal hyperalgesia, and assessed the neuronal mechanisms of JSKL on cultured brainstem cells. Behavioral tests and patch clamp recordings were performed to make this assessment.

Results: In our study, we found that JSKL significantly recovered the gait performance (P<0.001) and decreased the levels of mechanical pain in 18.9% (P<0.01) and thermal pain in 18.1% (P<0.05). Further investigation suggested that JSKL and its containing ginsenoside Rb1 (GRb1), notoginsenoside R1 (NGR1) reduced the action potential frequency in 38.5%, 27.2%, 25.9%, and hyperpolarized resting membrane potential in 15.0%, 13.8%, 12.1%, respectively. Kir channels, not KV channels and KCa channels, were the major intermediate factors achieving treatment effects. Finally, immunostaining results showed that the phosphorylation of Kir3.1 was promoted, whereas the total expression level did not change.

Conclusion: Our study reveals a novel strategy of treating CSM by using Traditional Chinese Medicines (TCMs) containing active components.

Keywords: Jingshu granule, cervical spondylotic myelopathy, ginsenoside Rb1, notoginsenoside R1, Kir3.1, cultured brainstem neurons.

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Article Details

VOLUME: 18
ISSUE: 8
Year: 2019
Page: [631 - 642]
Pages: 12
DOI: 10.2174/0929866526666190911150514
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