期刊
AUTOIMMUNITY REVIEWS
卷 21, 期 3, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.autrev.2021.103015
关键词
Primary chronic pain; Fibromyalgia syndrome; Complex regional pain syndrome; Rheumatoid arthritis; Autoantibody; Passive immunoglobulin transfer
类别
资金
- Pain Relief Foundation, Liverpool UK
- Hungarian research grant [OTKA K138046]
- Ministry of Innovation and Technology (Hungary)
- Eotvos Lorand Research Network
- NIH [NS117340]
Chronic pain is a major cause of disability worldwide, but its etiology and treatment methods are still uncertain. Research has found that autoimmune factors may be related to certain chronic pain conditions, caused by antibody-mediated autoimmune mechanisms. These findings suggest that antibody-mediated autoimmune mechanisms may play an important role in multiple conditions and further research is needed to elucidate the molecular and cellular details.
Chronic pain is the leading cause of life years lived with disability worldwide. The aetiology of most chronic pain conditions has remained poorly understood and there is a dearth of effective therapies. The WHO ICD-11 has categorised unexplained chronic pain states as 'chronic primary pains' (CPP), which are further defined by their association with significant distress and/or dysfunction. The new mechanistic term, 'nociplasticic pain' has been developed to illustrate their presumed generation by a structurally intact, but abnormally functioning nociceptive system. Recently, researchers have unravelled the surprising, ubiquitous presence of pain-sensitising autoantibodies in four investigated CPP indicating autoimmune causation. In persistent complex regional pain syndrome, fibromyalgia syndrome, chronic post-traumatic limb pain, and non-inflammatory joint pain associated with rheumatoid arthritis, passive transfer experiments have shown that either IgG or IgM antibodies from patient-donors cause symptoms upon injection to rodents that closely resemble those of the clinical disorders. Targets of antibody-binding and downstream effects vary between conditions, and more research is needed to elucidate the molecular and cellular details. The central nervous system appears largely unaffected by antibody binding, suggesting that the clinically evident CNS symptoms associated with CPP might arise downstream of peripheral processes. In this narrative review pertinent findings are described, and it is suggested that additional symptom-based disorders might be examined for the contribution of antibody-mediated autoimmune mechanisms.
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