Brain Mechanisms Underlying CBT-Related Reductions in Fibromyalgia
Brain Mechanisms Underlying CBT-Related Reductions in Fibromyalgia
批准号:
9071290
负责人:
ROBERT R EDWARDS
金额:
$53.32万
依托单位国家:
美国
项目类别:
财政年份:
2014
资助国家:
美国
项目状态:
已结题
起止时间:
2014-05-12 至 2019-07-31
关键词:
AddressAffectAffectiveAftercareAnteriorAreaAttentionBiological MarkersBrainBrain regionCNS processingChronicClinicalCognitiveCognitive TherapyCoping SkillsDataEducationEmotionalFibromyalgiaFosteringFunctional Magnetic Resonance ImagingGoalsHealthHyperalgesiaIndividual DifferencesInsula of ReilInternational Health ProblemsInterventionKnowledgeLinkMapsMeasuresMedialMediatingMediator of activation proteinMeta-AnalysisModelingMusculoskeletal PainNeuraxisNeurobiologyOutcomePainPain DisorderPain intensityPain managementParticipantPathway interactionsPatientsPilot ProjectsPlayPrefrontal CortexPrincipal InvestigatorProcessPsychosocial FactorPublic HealthPublishingQuality of lifeRandomizedReportingResearchRestRoleSeveritiesShapesStimulusStructureThalamic structureTherapy trialTissuesVisitWorkbiopsychosocialbrain circuitrychronic paincognitive processcostdesigndisabilityeffective therapyexperiencefibromyalgia painfollow-upimprovedneuroimagingnovelpredicting responseprogramspsychosocialresponse
中文摘要
描述(由申请人提供):慢性疼痛是一种普遍的国际健康问题,每年造成的损失超过6000亿美元。该应用侧重于纤维肌痛(FM),其特征是持续,广泛的身体疼痛,并有显著的脑功能改变的证据。认知行为疗法(CBT)是少数几种有效的FM治疗方法之一,它已被证明可以减少疼痛强度和疼痛相关的残疾,可能是通过减少灾难化,这是一个重要的社会心理因素,在形成疼痛相关结果的个体差异中起着至关重要的作用。很可能
英文摘要
DESCRIPTION (provided by applicant): Chronic pain is a widespread international health problem that imposes costs of over 600 billion dollars per year. This application focuses on fibromyalgia (FM), which is characterized by persistent, widespread body pain, with significant evidence of altered brain function. One of the few effective treatments for FM is cognitive-behavioral therapy (CBT), which has been shown to reduce pain intensity and pain-related disability, potentially via reductions in catastrophizing, an important psychosocial factor that plays a crucial role in shaping individual differences in pain- related outcomes. It is likely that
brain mechanisms underpin the beneficial effects of lowered catastrophizing and reduced pain in FM, and CBT-produced decrements in catastrophizing may act to "normalize" dysfunctional central nervous system pain processing. Our previous study in FM patients confirms that patients who are high in catastrophizing show enhanced pain-related activation in brain areas that process emotional aspects of pain (e.g., anterior insula and medial thalamus). In addition, catastrophizing was associated with altered pain-evoked functional connectivity between thalamus, anterior insula, and default mode network (DMN) structures such as medial prefrontal cortex. The DMN is a constellation of brain regions that mediate self- focused cognitive processing; our prior work has implicated altered resting-state functional connectivity between DMN and insula as a biomarker for clinical pain in FM. In our pilot study, a subset of FM patients was randomized to CBT or an active educational control condition. We found that CBT reduced catastrophizing and produced corresponding changes in brain activation and DMN connectivity. In the present proposal, we hypothesize that CBT-produced improvements in pain will be anticipated and mediated by reductions in catastrophizing and their associated effects on pain-related brain functioning. Participants with FM will be randomized to 8 weekly treatments with CBT or an education/attention control, and followed up for 6 months. Functional MRI data, including functional connectivity during both a resting and evoked deep- tissue pain state, will be
collected at baseline, mid-treatment, and after the final treatment visit. We hypothesize that CBT will reduce catastrophizing early in treatment, resulting in adaptive changes in the brain's responses to an externally-applied noxious stimulus. These changes will then predict subsequent changes in patients' resting state connectivity in DMN and pain- relevant brain regions, which will underlie long-term improvements in clinical pain. Our overarching goal is to understand the neurobiological pathways by which CBT and reduced catastrophizing facilitate improvements in chronic pain; such information will help to refine biopsychosocial models of pain, identify potential non-responders early in treatment, and facilitate the enhancement of psychosocial interventions for chronic musculoskeletal pain.
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