Pain medicine : the official journal of the American Academy of Pain Medicine
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Randomized Controlled Trial
The Response of the Primary Motor Cortex to Neuromodulation is Altered in Chronic Low Back Pain: A Preliminary Study.
Neuromodulation is increasingly investigated for the treatment of low back pain (LBP). However, the neurophysiological effects of common neuromodulatory techniques (anodal transcranial direct current stimulation [tDCS] and peripheral electrical stimulation [PES]) have not been investigated in people with chronic LBP. Here we aimed to compare the effect of three neuromodulatory protocols (anodal tDCS, high intensity PES, and a priming protocol of combined tDCS/PES) on primary motor cortex (M1) excitability in people with and without chronic LBP. ⋯ The neurophysiological response to common neuromodulatory treatments differs between people with and without LBP. This has relevance for the design and tailoring of neuromodulation in pain. Further, if the goal of treatment is to increase M1 excitability, a priming protocol (e.g., combined tDCS + PES) may be more effective than tDCS alone.
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Randomized Controlled Trial
A Randomized, Double-Blind, Placebo- and Active Comparator-Controlled Phase I Study of Analgesic/Antihyperalgesic Properties of ASP8477, a Fatty Acid Amide Hydrolase Inhibitor, in Healthy Female Subjects.
To evaluate the analgesic/antihyperalgesic effect of ASP8477. ⋯ ASP8477 was well tolerated in this study. Analysis of all subjects did not demonstrate a significant difference in LEP for ASP8477 100 mg over placebo but did in subjects who demonstrated positive capsaicin skin effects.
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Randomized Controlled Trial Multicenter Study
Efficacy of Lubiprostone for the Treatment of Opioid-Induced Constipation, Analyzed by Opioid Class.
To examine the efficacy and safety of lubiprostone for the treatment of opioid-induced constipation (OIC) in patients by opioid class received. ⋯ In patients using commonly prescribed opioids, lubiprostone is effective and generally well tolerated for the treatment of OIC.
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Randomized Controlled Trial
How Classical Conditioning Shapes Placebo Analgesia: Hidden versus Open Conditioning.
To investigate the influence of expectancy of pain intensity, fear of pain (trait), and fear (state) on the effectiveness of hidden and open conditioning to produce placebo analgesia. ⋯ Fear seems to be a more important factor than expectancy in producing placebo analgesia induced by hidden conditioning.
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Randomized Controlled Trial
No Effect of Acupuncture as Adjunctive Therapy for Patients with Total Knee Replacement: A Randomized Controlled Trial.
Acupuncture is a low risk option in pain management following total knee replacement as an alternative to opioid analgesics. Therefore, the benefit of acupuncture as adjunct to an exercise program was investigated. Furthermore, the modifying effect of previous benefit from acupuncture was explored. ⋯ Our results do not support the addition of acupuncture to routine rehabilitation. Previous benefit from acupuncture was not able to identify those likely to respond to acupuncture. Future studies to investigate whether subgroups of patients would benefit from acupuncture are needed.