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- W2003642068 abstract "Osteoarthritis (OA) is a complex and painful disease of the whole joint. At present there are no satisfying agents for treating OA. To promote OA research and improved treatment, this review summarizes current preclinical evidence on the development of OA.Preclinical OA research was searched and key findings are summarized and commented.Mechanisms of OA-associated pain have been studied in rodent knee OA models produced by intra-knee injection of the chondrocyte glycolytic inhibitor mono-iodoacetate (MIA), surgery, or spontaneous development in some species. These models are clinically relevant in terms of histological damage and functional changes, and are used to study mechanisms underlying mechanical, thermal, ambulatory, body weight supporting-evoked, and ongoing OA pain. Recent peripheral, spinal, and supraspinal biochemical and electrophysiological studies in these models suggest that peripheral pro-inflammatory mediators and neuropeptides sensitize knee nociceptors. Spinal cytokines and neuropeptides promote OA pain, and peripheral and spinal cannabinoids inhibit OA pain respectively through cannabinoid-1 (CB1) and CB1/CB2 receptors. TRPV1 and metalloproteinases contribute and supraspinal descending facilitation of 5-hydroxytryptamine (5-HT)/5-HT 3 receptors may also contribute to OA pain. Conditioned place preference tests demonstrate that OA pain induces aversive behaviors, suggesting the involvement of brain. During OA, brain functional connectivity is enhanced, but at present it is unclear how this change is related to OA pain.Animal studies demonstrate that peripheral and central sensitization contributes to OA pain, involving inflammatory cytokines, neuropeptides, and a variety of chemical mediators. Interestingly, brainstem descending facilitation of 5-HT/5-HT3 receptors plays a role OA pain." @default.
- W2003642068 created "2016-06-24" @default.
- W2003642068 creator A5016029838 @default.
- W2003642068 creator A5020648064 @default.
- W2003642068 creator A5031465490 @default.
- W2003642068 date "2013-09-01" @default.
- W2003642068 modified "2023-10-14" @default.
- W2003642068 title "Osteoarthritis pain mechanisms: basic studies in animal models" @default.
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- W2003642068 doi "https://doi.org/10.1016/j.joca.2013.06.013" @default.
- W2003642068 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3771690" @default.