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Vagus Nerve Stimulation Attenuates Early Traumatic Brain Injury by Regulating the NF-κB/NLRP3 Signaling Pathway
Yunliang Tang1, Xiaoyang Dong1, Gengfa Chen1
1Department of Rehabilitation Medicine, First Affiliated Hospital of Nanchang University, Nanchang, People's Republic of China.
Neurorehabilitation and Neural Repair
|August 11, 2020
Summary
Vagus nerve stimulation (VNS) significantly reduces brain damage, neurological deficits, and inflammation after traumatic brain injury (TBI) in rats. This neuroprotective effect is linked to the inhibition of oxidative stress, apoptosis, and the NF-κB/NLRP3 pathway.
Area of Science:
- Neuroscience
- Pathophysiology
- Medical Research
Background:
- Traumatic brain injury (TBI) is a leading global cause of death and disability.
- Key pathological features of TBI include oxidative stress, inflammation, and apoptosis.
- The therapeutic potential of vagus nerve stimulation (VNS) in TBI is not fully understood.
Purpose of the Study:
- To investigate the protective effects of VNS on TBI.
- To elucidate the underlying mechanisms of VNS in mitigating TBI-induced damage.
Main Methods:
- A TBI model was established in Sprague-Dawley rats using the free-fall drop method.
- Rats were divided into sham, TBI, and TBI + VNS groups.
- VNS was applied after TBI induction.
Main Results:
- VNS significantly reduced tissue damage, neurological deficits, and cerebral edema post-TBI.
- VNS alleviated oxidative stress, inflammation, and apoptosis in the brain.
- VNS suppressed nuclear factor-κB (NF-κB) and NLRP3 inflammasome activation.
Conclusions:
- VNS demonstrates significant neuroprotective effects against TBI.
- VNS may attenuate TBI by inhibiting oxidative stress, inflammation, and apoptosis.
- The NF-κB/NLRP3 signaling pathway is a potential mechanism underlying VNS efficacy in TBI.
