A growing body of evidence substantiates that acupuncture treatment significantly improves clinical outcomes for patients with chronic pain disorders, and specifically for patients with chronic Low Back Pain (cLBP). Major stakeholders recommend acupuncture as one possible treatment option, despite the fact that in most cases, especially in large trials, sham (placebo) treatment is equally efficacious to real acupuncture, because both treatments are superior to optimal mainstream care or no-treatment. To more fully understand acupuncture treatment and how to best incorporate it into clinical practice, understanding placebo effects is urgent. Further, extensive research from our own group suggests that sham acupuncture has enhanced placebo effects compared to placebos for conventional treatments (e.g. pills or creams). Mechanistic work using a conditioning expectancy manipulation in healthy subjects to investigate the neural basis for analgesia after treatment with real acupuncture or placebo acupuncture suggests that this difference is not because of differential expectations. A critical question is, do different routes of administration configure unique neural mechanisms of placebo analgesia? Published fMRI data from our team demonstrates distinctly different mechanisms for real and placebo acupuncture, despite comparable levels of pain relief. Comparing our fMRI data with published studies from other laboratories suggests different mechanisms between sham acupuncture and placebo creams. Importantly, levels of expectation of pain relief were experimentally enhanced by the same conditioning mechanism. Notably, very little work has been done to investigate the neural mechanism underlying placebo effects in chronic pain patients. In this study, we will directly compare cohorts of cLBP patients and matched healthy control subjects to investigate the impact that living with significant, chronic pain has on the neural mechanisms underlying the expectation component of analgesic response to real acupuncture and placebo acupuncture. This study will expand our understanding of acupuncture's potential role in the management of cLBP and clarify the nature of placebo responses.
The information gained from this experiment will enable scientists and the community to better interpret the results of a substantial body of literature investigating the mechanisms of acupuncture and placebo analgesia most of which has been done in healthy subjects. Most importantly, it will enable the translation of the results from healthy people to those suffering from a chronic pain disorder.
|Song, Wenwen; Dai, Minhui; Xuan, Lihua et al. (2017) Sensorimotor Cortical Neuroplasticity in the Early Stage of Bell's Palsy. Neural Plast 2017:8796239|
|Garcia, Ronald G; Lin, Richard L; Lee, Jeungchan et al. (2017) Modulation of brainstem activity and connectivity by respiratory-gated auricular vagal afferent nerve stimulation in migraine patients. Pain 158:1461-1472|
|Ellingsen, D-M; Garcia, R G; Lee, J et al. (2017) Cyclic Vomiting Syndrome is characterized by altered functional brain connectivity of the insular cortex: A cross-comparison with migraine and healthy adults. Neurogastroenterol Motil 29:|
|Wang, Zengjian; Wang, Xiaoyun; Liu, Jian et al. (2017) Acupuncture treatment modulates the corticostriatal reward circuitry in major depressive disorder. J Psychiatr Res 84:18-26|
|Egorova, N; Park, J; Kong, J (2017) In the face of pain: The choice of visual cues in pain conditioning matters. Eur J Pain 21:1243-1251|
|Fang, Jiliang; Egorova, Natalia; Rong, Peijing et al. (2017) Early cortical biomarkers of longitudinal transcutaneous vagus nerve stimulation treatment success in depression. Neuroimage Clin 14:105-111|
|Song, Wenwen; Cao, Zhijian; Lang, Courtney et al. (2017) Disrupted functional connectivity of striatal sub-regions in Bell's palsy patients. Neuroimage Clin 14:122-129|
|Lazaridou, Asimina; Kim, Jieun; Cahalan, Christine M et al. (2017) Effects of Cognitive-Behavioral Therapy (CBT) on Brain Connectivity Supporting Catastrophizing in Fibromyalgia. Clin J Pain 33:215-221|
|Li, Zhengjie; Lan, Lei; Zeng, Fang et al. (2017) The altered right frontoparietal network functional connectivity in migraine and the modulation effect of treatment. Cephalalgia 37:161-176|
|Song, Andrew H; Kucyi, Aaron; Napadow, Vitaly et al. (2017) Pharmacological Modulation of Noradrenergic Arousal Circuitry Disrupts Functional Connectivity of the Locus Ceruleus in Humans. J Neurosci 37:6938-6945|
Showing the most recent 10 out of 77 publications