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Article

Chloroquine exerts neuroprotection following traumatic brain injury via suppression of inflammation and neuronal autophagic death

  • Authors:
    • Chang‑Meng Cui
    • Jun‑Ling Gao
    • Ying Cui
    • Li‑Qian Sun
    • Yong‑Chao Wang
    • Kai‑Jie Wang
    • Ran Li
    • Yan‑Xia Tian
    • Jian‑Zhong Cui
  • View Affiliations / Copyright

    Affiliations: Department of Surgery, Hebei Medical University, Shijiazhung, Hebei 050017, P.R. China, School of Basic Medical Science, Hebei United University, Tangshan, Hebei 063000, P.R. China, Department of Neurosurgery, Tangshan Workers' Hospital, Tangshan, Hebei 063000, P.R. China
  • Pages: 2323-2328
    |
    Published online on: April 15, 2015
       https://doi.org/10.3892/mmr.2015.3611
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Abstract

The antimalarial drug, chloroquine (CQ), has been reported as an autophagy inhibitor in a variety of disorders, including Alzheimer's disease and brain ischemia. To the best of our knowledge, no studies to date have examined the potential for CQ to provide neuroprotection in animal models of traumatic brain injury (TBI). The aim of this study was to investigate the neuroprotective actions of CQ in TBI and to determine the mechanisms underlying this effect. Rats were immediately subjected to a diffuse cortical impact injury caused by a modified weight‑drop device and divided randomly into three groups: sham‑operated, CQ treatment and vehicle. The CQ treatment group was administered CQ (intraperitoneally, 3 mg/kg body weight) immediately following the induction of injury. The co‑localization of neuron‑specific nuclear protein (NeuN) and microtubule‑associated protein 1 light chain 3 (LC3), was followed by immunofluorescent staining. The expression of LC3 and inflammatory cytokines was identified by western blot analysis. Wet‑dry weight method was utilized to evaluate TBI‑induced brain edema. Motor function was evaluated using the Neurological Severity Score (NSS) scale and the Morris water maze was employed to assess spatial learning ability. This study demonstrated that the administration of CQ attenuates TBI‑induced cerebral edema, and the associated motor and cognitive functional deficits that occur post‑injury. Following the induction of cerebral trauma, CQ treatment significantly suppressed neuronal autophagy and reduced expression levels of the inflammatory cytokines, interleukin‑1β (IL‑1β) and tumor necrosis factor‑α (TNF‑α), in the rat hippocampus. Our results have provided in vivo evidence that CQ may exert neuroprotective effects following TBI, in attenuating brain edema and improving neurological functioning, by reducing the damaging consequences of neuronal autophagy and cerebral inflammation.
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Copy and paste a formatted citation
Spandidos Publications style
Cui CM, Gao JL, Cui Y, Sun LQ, Wang YC, Wang KJ, Li R, Tian YX and Cui JZ: Chloroquine exerts neuroprotection following traumatic brain injury via suppression of inflammation and neuronal autophagic death. Mol Med Rep 12: 2323-2328, 2015.
APA
Cui, C., Gao, J., Cui, Y., Sun, L., Wang, Y., Wang, K. ... Cui, J. (2015). Chloroquine exerts neuroprotection following traumatic brain injury via suppression of inflammation and neuronal autophagic death. Molecular Medicine Reports, 12, 2323-2328. https://doi.org/10.3892/mmr.2015.3611
MLA
Cui, C., Gao, J., Cui, Y., Sun, L., Wang, Y., Wang, K., Li, R., Tian, Y., Cui, J."Chloroquine exerts neuroprotection following traumatic brain injury via suppression of inflammation and neuronal autophagic death". Molecular Medicine Reports 12.2 (2015): 2323-2328.
Chicago
Cui, C., Gao, J., Cui, Y., Sun, L., Wang, Y., Wang, K., Li, R., Tian, Y., Cui, J."Chloroquine exerts neuroprotection following traumatic brain injury via suppression of inflammation and neuronal autophagic death". Molecular Medicine Reports 12, no. 2 (2015): 2323-2328. https://doi.org/10.3892/mmr.2015.3611
Copy and paste a formatted citation
x
Spandidos Publications style
Cui CM, Gao JL, Cui Y, Sun LQ, Wang YC, Wang KJ, Li R, Tian YX and Cui JZ: Chloroquine exerts neuroprotection following traumatic brain injury via suppression of inflammation and neuronal autophagic death. Mol Med Rep 12: 2323-2328, 2015.
APA
Cui, C., Gao, J., Cui, Y., Sun, L., Wang, Y., Wang, K. ... Cui, J. (2015). Chloroquine exerts neuroprotection following traumatic brain injury via suppression of inflammation and neuronal autophagic death. Molecular Medicine Reports, 12, 2323-2328. https://doi.org/10.3892/mmr.2015.3611
MLA
Cui, C., Gao, J., Cui, Y., Sun, L., Wang, Y., Wang, K., Li, R., Tian, Y., Cui, J."Chloroquine exerts neuroprotection following traumatic brain injury via suppression of inflammation and neuronal autophagic death". Molecular Medicine Reports 12.2 (2015): 2323-2328.
Chicago
Cui, C., Gao, J., Cui, Y., Sun, L., Wang, Y., Wang, K., Li, R., Tian, Y., Cui, J."Chloroquine exerts neuroprotection following traumatic brain injury via suppression of inflammation and neuronal autophagic death". Molecular Medicine Reports 12, no. 2 (2015): 2323-2328. https://doi.org/10.3892/mmr.2015.3611
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