Many randomized clinical trials (RCTs) show acupuncture to be an effective treatment for diverse pain conditions. A closer look at this literature shows inconsistent findings: results lend to be confirmatory when RCTs compare acupuncture with ?not treatment? or ?standard care? controls;but inconclusive when RCTs compare genuine (verum) acupuncture with sham acupuncture suggesting that at least one healing component is mediated by something other than the acupuncture needles. A recent meta-analysis identified patient expectation of pain relief as the most robust predictor acupuncture treatment efficacy, regardless of verum or sham group assignment. Neuroimaging studies have begun identifying testable mechanistic hypotheses for both acupuncture and placebo analgesia. Our recent studies on healthy subjects demonstrate that in the context of positive expectation, both verum and sham acupuncture significantly relieve pain, however each functions via separable and distinct brain mechanisms. The current proposal will test whether these distinct brain activity patterns associated with pain relief following verum and sham acupuncture can be replicated in patients suffering from chronic knee pain due to osteoarthritis (OA). We propose two experiments in patients with knee OA that directly build upon recent research in our laboratory. In the first experiment we will systematically boost patients? positive expectation for pain relief following verum or sham acupuncture, then quantify the relation between expectation, behavioral , and brain imaging (BOLD fMRI) measures of treatment response. In the second experiment, a similar boost of positive expectation for treatment will be compared to standard treatment and to waitlist control in a 6-week longitudinal mechanistic treatment study of verum acupuncture. fMRI BOLD data obtained before the first and after the 6th treatment sessions will be examined with respect to individual expectation of treatment outcome to identify potential treatment responses predictors. The significance of his innovative approach is that it could provide clear scientific evidence for how expectation modulates the impact of an analgesic treatment. The results of these experiments will advance our understanding of not only acupuncture and placebo analgesia mechanisms, but also help refine future research methods, and inform clinical practice.
The results of the proposed experiments will directly inform clinicians who treat patients with osteoarthritis of the knee about how to maximize the benefits of acupuncture treatments. And because the experiments specifically asks the question of what is the relation between a patient's expectation of how a treatment will relieve their pain and the outcome of the treatment, the results will potentially inform care givers about all treatments for osteoarthritis and other chronic pain disorders.
|Loggia, Marco L; Edwards, Robert R; Harris, Richard E et al. (2014) Reply: To PMID 24449585. Arthritis Rheumatol 66:1684-5|
|Kirsch, Irving; Kong, Jian; Sadler, Pamela et al. (2014) Expectancy and Conditioning in Placebo Analgesia: Separate or Connected Processes? Psychol Conscious (Wash D C) 1:51-59|
|Loggia, Marco L; Berna, Chantal; Kim, Jieun et al. (2014) Disrupted brain circuitry for pain-related reward/punishment in fibromyalgia. Arthritis Rheumatol 66:203-12|
|Hashmi, Javeria Ali; Kong, Jian; Spaeth, Rosa et al. (2014) Functional network architecture predicts psychologically mediated analgesia related to treatment in chronic knee pain patients. J Neurosci 34:3924-36|
|Yu, Rongjun; Gollub, Randy L; Spaeth, Rosa et al. (2014) Disrupted functional connectivity of the periaqueductal gray in chronic low back pain. Neuroimage Clin 6:100-8|
|Lee, Jeungchan; Napadow, Vitaly; Park, Kyungmo (2014) Pain and sensory detection threshold response to acupuncture is modulated by coping strategy and acupuncture sensation. BMC Complement Altern Med 14:324|
|Hsieh, Christine; Kong, Jian; Kirsch, Irving et al. (2014) Well-loved music robustly relieves pain: a randomized, controlled trial. PLoS One 9:e107390|
|Chae, Younbyoung; Lee, In-Seon; Jung, Won-Mo et al. (2014) Decreased peripheral and central responses to acupuncture stimulation following modification of body ownership. PLoS One 9:e109489|
|Chen, Xiaoyan; Spaeth, Rosa B; Retzepi, Kallirroi et al. (2014) Acupuncture modulates cortical thickness and functional connectivity in knee osteoarthritis patients. Sci Rep 4:6482|
|Yu, Rongjun; Gollub, Randy L; Vangel, Mark et al. (2014) Placebo analgesia and reward processing: integrating genetics, personality, and intrinsic brain activity. Hum Brain Mapp 35:4583-93|
Showing the most recent 10 out of 23 publications