GuaLou GuiZhi decoction inhibits LPS-induced microglial cell motility through the MAPK signaling pathway

Hu,Haixia; Li,Zuanfang; Zhu,Xiaoqin; Lin,Ruhui; Peng,Jun; Tao,Jing; Chen,Lidian

doi:10.3892/ijmm.2013.1522

December 2013 Volume 32 Issue 6

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December 2013 Volume 32 Issue 6

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Article

GuaLou GuiZhi decoction inhibits LPS-induced microglial cell motility through the MAPK signaling pathway

Authors:
- Haixia Hu
- Zuanfang Li
- Xiaoqin Zhu
- Ruhui Lin
- Jun Peng
- Jing Tao
- Lidian Chen
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Affiliations: Key Laboratory of TCM Rehabilitation of State Administration of Traditional Chinese Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, P.R. China, Fujian Rehabilitation Technology Engineering Center, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, P.R. China, MOE Key Laboratory of Traditional Chinese Medicine on Osteology and Traumatology and Exercise Rehabilitation, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, P.R. China, Fujian Rehabilitation Technology Engineering Center, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, P.R. China
Pages: 1281-1286
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Published online on: October 11, 2013

https://doi.org/10.3892/ijmm.2013.1522
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Abstract

Microglial activation plays an important role in neroinflammation following ischemic stroke. Activated microglial cells can then migrate to the site of injury to proliferate and release substances which induce secondary brain damage. It has been shown that microglial migration is associated with the activation of the mitogen-activated protein kinase (MAPK) signaling pathways. The Chinese formula, GuaLou GuiZhi decoction (GLGZD), has long been administered in clinical practice for the treatment of post-stroke disabilities, such as muscular spasticity. In a previous study, we demonstrated that the anti-inflammtory effects of GLGZD were mediated by the TLR4/NF-κB pathway in lipopolysaccharide (LPS)-stimulated microglial cells. Therefore, in this study, we evaluated the role of GLGZD in microglial migration by performing scratch wound assays and migration assays. We wished to elucidate the cellular and molecular mechanisms elicited by this TCM formula in microglial-induced inflammation by evaluating the release and expression of chemotactic cytokines [monocyte chemoattractant protein-1 (MCP-1), macrophage inflammatory protein-1α (MIP-1α) and interleukin (IL)-8] by ELISA and quantitative PCR. Our results revealed that the migration of microglial cells was enhanced in the presence of LPS (100 ng/ml); however, GLGZD (100 µg/ml) significantly inhibited cell motility and the production of chemokines through the inhibition of the activation of the p38 and c-Jun N-terminal protein kinase (JNK) signaling pathway. We demonstrate the potential of GLGZD in the modulation of microglial motility by investigating the effects of GLGZD on microglial migration induced by LPS. Taken together, our data suggest that GLGZD per se cannot trigger microglial motility, whereas GLGZD impedes LPS-induced microglial migration through the activation of the MAPK signaling pathway. These results provide further evidence of the anti-inflammatory effects of GLGZD and its potential for use in the treatment of ischemic stroke.

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Journals

International Journal of Molecular Medicine

International Journal of Oncology

Molecular Medicine Reports

Oncology Reports

Experimental and Therapeutic Medicine

Oncology Letters

Biomedical Reports

Molecular and Clinical Oncology

World Academy of Sciences Journal

International Journal of Functional Nutrition

International Journal of Epigenetics

Medicine International

GuaLou GuiZhi decoction inhibits LPS-induced microglial cell motility through the MAPK signaling pathway

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