Pain is the most common presenting symptom in patients with skeletal metastases. Two main types of cancer pain exist: ongoing pain, and incident or breakthrough pain. Pain is transduced at the level of the primary afferent nerve fiber that innervates peripheral tissue. Bone is densely innervated by sensory nerve fibers within the bone marrow, mineralized bone, and periosteum. Central sensitization, a heightened reactivity of nervous system in the face of sustained neural signals, can lead to allodynia, a painful condition where mechanical stimuli not normally perceived as noxious are painful. Proof of concept experiments showed that local anti-nerve growth factor (NGF) therapy can block ectopic sprouting and pathological reorganization of new nociceptive fibers, suggesting that prophylactic treatment may be capable of preventing bone cancer pain. Research is now focused on targeting pain initiation sites within the nervous system, namely, ion channels, cytokines and growth factors, to limit systemic complications.
|Original language||English (US)|
|Title of host publication||Primer on the Metabolic Bone Diseases and Disorders of Mineral Metabolism|
|Subtitle of host publication||Eighth Edition|
|Number of pages||8|
|State||Published - Jul 19 2013|
Bibliographical notePublisher Copyright:
© 2013 American Society for Bone and Mineral Research. All rights reserved.
- Anti-nerve growth factor (NGF) therapy
- Bone cancer pain
- Central sensitization
- Nervous system
- Pain initiation sites