Clinical Effect of Acupuncture in Neurodegenerative Diseases on Traumatic Brain Injury Patients

Traumatic brain injury (TBI) is an altered brain function caused by an external force, which may annually have 69 million incidence cases all over the world. Increasing evidence suggests that TBI may be a major risk of beta amyloid (Aβ)-associated neurodegenerative disorders, such as Alzheimer's disease, frontotemporal dementia, and Parkinson's disease. Investigations from brain imaging studies revealed that Aβ density maps of TBI patients overlapped with those with Alzheimer's disease, and increased Aβ density not only associated with prolonged TBI duration but also associated with decreased white matter integrity. It has been suggested that the axonal injury and cerebrovascular dysfunction due to TBI may associate with the elevated level of Aβ peptides. The increasing accumulation in Aβ due to TBI may contribute to the initiation of the pathological alterations in neurodegeneration diseases. Recent animal studies suggest that acupuncture may promote regeneration of nerves in injured tissues and reduce the concentration of Aβ in brain. Moreover, recent clinical trials also indicate that acupuncture may improve the vascular cognitive impairment due to cerebral small vessel disease. Thus, acupuncture treatment on TBI may not only be of benefit for the TBI recovery but also act to interrupt the pathological changes in these neurodegenerative diseases.