Abstract:
:The investigation of neurotransmitter systems in placebo and nocebo effects has improved our understanding of these phenomena. Yet, most studies involve healthy participants. Because the pain modulatory system may differ in healthy participants and patients with chronic pain, it is important to investigate the evidence for neurotransmitter involvement in placebo and nocebo effects in each of these populations. PubMed, Embase, and Scopus databases, and the Cochrane Library were searched for articles investigating the endogenous opioid, endocannabinoid, dopaminergic, oxytocinergic, vasopressinergic, and cholecystokininergic (CCKergic) systems in placebo and nocebo effects in pain. Twenty-eight placebo and 2 nocebo studies were included. Vote counting was used to balance the number of positive vs negative findings. In healthy participants, the endogenous opioid, endocannabinoid, and vasopressinergic systems were involved in placebo effects, whereas findings on the dopaminergic and oxytocinergic systems were mixed. In patients with chronic pain, only 4 studies investigated neurotransmitters showing no involvement of the endogenous opioid system and mixed findings regarding the dopaminergic system. As to nocebo effects, 2 studies suggest that the CCKergic system is involved in nocebo effects in healthy participants. Overall, research has come a long way in specifying the neurotransmitter systems involved in placebo effects in healthy participants. Yet, evidence for the involvement of neurotransmitter systems in placebo effects in patients with chronic pain and in nocebo effects in healthy participants and patients is scarce. Based on the existing evidence, this systematic review suggests that knowledge obtained in healthy participants may not necessarily be transferred to chronic pain.
journal_name
Painjournal_title
Painauthors
Skyt I,Lunde SJ,Baastrup C,Svensson P,Jensen TS,Vase Ldoi
10.1097/j.pain.0000000000001682subject
Has Abstractpub_date
2020-01-01 00:00:00pages
11-23issue
1eissn
0304-3959issn
1872-6623pii
00006396-202001000-00003journal_volume
161pub_type
杂志文章相关文献
PAIN文献大全abstract::This paper presents the results of a detailed study of the pain epidemiology and health related quality of life (HRQL) in 150 chronic non-malignant pain patients consecutively referred to a Danish multidisciplinary pain center. Mean pain severity was 71.6 (SD = 18.5) on the VAS scale. Forty-two percent reported poor q...
journal_title:Pain
pub_type: 临床试验,杂志文章
doi:10.1016/S0304-3959(97)00126-7
更新日期:1997-12-01 00:00:00
abstract::Peripheral nerve injury produces a persistent neuropathic pain state characterized by spontaneous pain, allodynia and hyperalgesia. In this study, we evaluated the possible involvement of A 2ARs in the development of neuropathic pain and the expression of microglia and astrocytes in the spinal cord after sciatic nerve...
journal_title:Pain
pub_type: 杂志文章
doi:10.1016/j.pain.2008.07.012
更新日期:2008-11-15 00:00:00
abstract::Thirty-eight patients maintained on opioid analgesics for non-malignant pain were retrospectively evaluated to determine the indications, course, safety and efficacy of this therapy. Oxycodone was used by 12 patients, methadone by 7, and levorphanol by 5; others were treated with propoxyphene, meperidine, codeine, pen...
journal_title:Pain
pub_type: 杂志文章
doi:10.1016/0304-3959(86)90091-6
更新日期:1986-05-01 00:00:00
abstract::Intraperitoneal administration of the serotonin 5-HT1A agonist, buspirone (1-5 mg/kg), produced dose- and time-related core hypothermia that was coincident with analgesia against a thermally noxious stimulus. Surface body temperature was not altered by buspirone. The 5-HT1A antagonist, NAN-190 (2 mg/kg, s.c.), blocked...
journal_title:Pain
pub_type: 杂志文章
doi:10.1016/0304-3959(92)90042-A
更新日期:1992-09-01 00:00:00
abstract::Chronic pain not only interferes with daily activities, it may also have a negative impact on the perceived integrity of one's self through self-discrepancies. Self-discrepancies are experienced distances between the actual self and self-guides that can exist from 2 perspectives (ie, own and other). Self-discrepancies...
journal_title:Pain
pub_type: 杂志文章
doi:10.1016/j.pain.2010.11.009
更新日期:2011-02-01 00:00:00
abstract:ABSTRACT:Efficacy of treatment is heavily dependent on experience and expectations. Moreover, humans can generalize from one experience to a perceptually similar but novel situation. We investigated whether and how this applies to pain relief, using ecologically valid tonic pain stimuli treated by surreptitiously lower...
journal_title:Pain
pub_type: 杂志文章
doi:10.1097/j.pain.0000000000002166
更新日期:2020-12-15 00:00:00
abstract::TRPV1 is expressed in a subpopulation of myelinated Aδ and unmyelinated C-fibers. TRPV1+ fibers are essential for the transmission of nociceptive thermal stimuli and for the establishment and maintenance of inflammatory hyperalgesia. We have previously shown that high-power, short-duration pulses from an infrared diod...
journal_title:Pain
pub_type: 杂志文章
doi:10.1016/j.pain.2014.01.007
更新日期:2014-04-01 00:00:00
abstract::The efficacy of intravenous acetaminophen (1000mg) in the treatment of acute migraine attacks as an alternative to parenteral application of lysine acetylsalicylate or triptans was investigated, using a multi-center, randomized, double-blind, placebo controlled study design. Migraine diagnosis was made according to th...
journal_title:Pain
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1016/j.pain.2005.07.002
更新日期:2005-10-01 00:00:00
abstract::The role of prostanoids in nociception is well established. The headache eliciting effects of prostacyclin (prostaglandin I(2), (PGI(2))) and its possible mechanisms had previously not been systematically studied in man. We hypothesized that infusion of PGI(2) might induce headache and vasodilatation of cranial vessel...
journal_title:Pain
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.pain.2008.03.018
更新日期:2008-09-30 00:00:00
abstract::We investigated the question of how cultural and linguistic backgrounds affect relationships among ratings (reported by patients with metastatic cancer) of pain's interference with such functions as activity, mood, and sleep. Multidimensional scaling (MDS) was used to analyze ratings of pain interference from a sample...
journal_title:Pain
pub_type: 杂志文章
doi:10.1016/0304-3959(96)03131-4
更新日期:1996-10-01 00:00:00
abstract::Theoretical models and evidence increasingly identify chronic pain as a family issue. To date, much of this work has focused on risk conferred by parental chronic pain status despite evidence suggesting parent mental illness and non-pain-related chronic illness may also contribute to poorer chronic pain outcomes in ch...
journal_title:Pain
pub_type: 杂志文章
doi:10.1097/j.pain.0000000000001820
更新日期:2020-06-01 00:00:00
abstract::Adults with mood disorders frequently use prescription opioids. The factors associated with this increased use remain unclear. We used the Medical Expenditure Panel Surveys from 2005 to 2011 to measure the association of mood disorders with new opioid use and the transition to longer-term opioid use for a variety of p...
journal_title:Pain
pub_type: 杂志文章
doi:10.1097/j.pain.0000000000000650
更新日期:2016-11-01 00:00:00
abstract::This study was designed to assess the role of calcitonin gene-related peptide (CGRP) and its receptor in the generation and maintenance of secondary mechanical allodynia and hyperalgesia induced by intradermal injection of capsaicin in rats. Paw withdrawal responses (PWRs) to von Frey hairs with different bending forc...
journal_title:Pain
pub_type: 杂志文章
doi:10.1016/s0304-3959(03)00008-3
更新日期:2003-07-01 00:00:00
abstract::Nociceptive impulse activity was recorded extracellularly from single A delta and C primary afferents of the guinea pig's medial articular nerve after induction of an experimental osteoarthritis in the knee joint by partial medial menisectomy and transection of the anterior cruciate ligament (PMM+TACL). Also, the anal...
journal_title:Pain
pub_type: 杂志文章
doi:10.1016/j.pain.2006.11.012
更新日期:2007-07-01 00:00:00
abstract::The relationship between subjective measurements of pain (pain report and threshold of sensation) and evoked potentials following painful electrical stimulation of tooth pulp was evaluated after intake of different weak analgesics. These time-response curves for the dolorimetric parameters were correlated to the in vi...
journal_title:Pain
pub_type: 杂志文章
doi:10.1016/0304-3959(82)90178-6
更新日期:1982-04-01 00:00:00
abstract::A double-blind placebo-controlled crossover trial was used to determine the effects of topical ketamine, an N-methyl-d-aspartate (NMDA) receptor antagonist, on the sensory disturbances in 20 patients with complex regional pain syndrome (CRPS). On two occasions separated by at least one week, sensory tests to light tou...
journal_title:Pain
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.pain.2009.05.017
更新日期:2009-11-01 00:00:00
abstract::In this study, we examined the relationship between astrocyte activation in the cuneate nucleus (CN) and behavioral hypersensitivity after chronic constriction injury (CCI) of the median nerve. In addition, we also examined the effects of pre-emptive treatment with a number of drugs on astrocyte activation and hyperse...
journal_title:Pain
pub_type: 杂志文章
doi:10.1016/j.pain.2009.11.004
更新日期:2010-01-01 00:00:00
abstract::Total hindpaw denervation in rodents elicits an abnormal behavior of licking, scratching and self-injury of the anesthetic limb ("autotomy"). Since the same denervation produces phantom limb pain and anesthesia dolorosa in humans, autotomy has been used as a model of human neuropathic pain. Autotomy is an inherited tr...
journal_title:Pain
pub_type: 杂志文章
doi:10.1016/S0304-3959(01)00295-0
更新日期:2001-08-01 00:00:00
abstract::We assessed for the first time the long-term maintenance of repetitive transcranial magnetic stimulation (rTMS)-induced analgesia in patients with chronic widespread pain due to fibromyalgia. Forty consecutive patients were randomly assigned, in a double-blind fashion, to 2 groups: one receiving active rTMS (n=20) and...
journal_title:Pain
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.pain.2011.01.034
更新日期:2011-07-01 00:00:00
abstract::Aquaporin 1 (AQP1) is the archetypal member of a family of water channel proteins that contribute to water homeostasis in kidney, lung, and other tissues. Although there is limited evidence that aquaporins are expressed in the nervous system, AQP4 is expressed in glia and AQP9 is present on some neuronal and glial mit...
journal_title:Pain
pub_type: 杂志文章
doi:10.1016/j.pain.2006.11.018
更新日期:2007-09-01 00:00:00
abstract::Contrary to a clinical aphorism that early head and neck cancer is painless, we show that patients who develop head and neck cancer experience significant pain at the time of initial diagnosis. We compared orofacial pain sensitivity in groups of patients with normal oral mucosa, oral precancer, and newly diagnosed ora...
journal_title:Pain
pub_type: 杂志文章
doi:10.1016/j.pain.2011.02.009
更新日期:2011-05-01 00:00:00
abstract::The purpose of this study was to develop and validate a measure of patient satisfaction for patients receiving treatment for either acute or chronic pain: the Pain Treatment Satisfaction Scale (PTSS). Development of the initial questionnaire included a comprehensive literature review and interviews with patients, phys...
journal_title:Pain
pub_type: 杂志文章
doi:10.1016/j.pain.2004.09.005
更新日期:2004-12-01 00:00:00
abstract::A portable constant current electrical stimulator with bipolar felt disk electrodes was developed for quantitative assessment of cutaneous sensibility. The new method was used in the measurement of thresholds for perception and pain in healthy volunteers. The mean values of the threshold for perception in different ar...
journal_title:Pain
pub_type: 杂志文章
doi:10.1016/0304-3959(85)90174-5
更新日期:1985-06-01 00:00:00
abstract::Persons with chronic musculoskeletal pain may be hypervigilant for pain-related cues which, paradoxically, may be maintaining their pain. Several randomized controlled trials have assessed whether a modified dot-probe protocol (ie, attention bias modification [ABM]) reduces chronic pain- and pain-related symptoms in p...
journal_title:Pain
pub_type: 杂志文章
doi:10.1097/j.pain.0000000000001746
更新日期:2020-03-01 00:00:00
abstract::We have developed a model in which inflammation contiguous to and within a dorsal root ganglion (DRG) was generated by local application of complete Freund's adjuvant (CFA) to the L4 lumbar spinal nerve as it exits from the intervertebral foramen. The periganglionic inflammation (PGI) elicited a marked reduction in wi...
journal_title:Pain
pub_type: 杂志文章
doi:10.1016/j.pain.2008.11.013
更新日期:2009-03-01 00:00:00
abstract::Chronic pain is associated with large societal costs, but few studies have investigated the total costs of chronic pain with respect to elderly subjects. The elderly usually require informal care, care performed by municipalities, and care for chronic diseases, all factors that can result in extensive financial burden...
journal_title:Pain
pub_type: 杂志文章
doi:10.1097/01.j.pain.0000460336.31600.01
更新日期:2015-03-01 00:00:00
abstract::The treatment of neuropathic pain remains a clinical challenge because of its unclear mechanisms and broad clinical morbidity. Matrix metalloproteinase (MMP)-9 and MMP-2 have previously been described as key components in neuropathic pain because of their facilitation of inflammatory cytokine maturation and induction ...
journal_title:Pain
pub_type: 杂志文章
doi:10.1097/j.pain.0000000000000575
更新日期:2016-08-01 00:00:00
abstract::Extracellular nucleosides and nucleotides have widespread functions in responding to physiological stress. The "purinome" encompasses 4 G-protein-coupled receptors (GPCRs) for adenosine, 8 GPCRs activated by nucleotides, 7 adenosine 5'-triphosphate-gated P2X ion channels, as well as the associated enzymes and transpor...
journal_title:Pain
pub_type: 杂志文章
doi:10.1097/j.pain.0000000000001857
更新日期:2020-07-01 00:00:00
abstract::Intrathecal administration of serotonin type 2 (5-HT(2)) receptor agonists, alpha-methyl-5-hydroxytryptamine maleate (alpha-m-5-HT) or (+/-)-1-(4-iodo-2,5-dimethoxyphenyl)-2-aminopropane hydrochloride (DOI), produces antiallodynic effects in a rat model of neuropathic pain. In the present study, we examined the antial...
journal_title:Pain
pub_type: 杂志文章
doi:10.1016/j.pain.2003.12.019
更新日期:2004-03-01 00:00:00
abstract::The habituation to sensory stimuli of different modalities is reduced in migraine patients. However, the habituation to pain has never been evaluated. Our aim was to assess the nociceptive pathway function and the habituation to experimental pain in patients with migraine. Scalp potentials were evoked by CO(2) laser s...
journal_title:Pain
pub_type: 杂志文章
doi:10.1016/s0304-3959(03)00137-4
更新日期:2003-09-01 00:00:00