Evidence of cellular proliferation in the spinal cord and hippocampus in an animal model of osteoarthritis

Osteoarthritis is a degenerative joint disease that involves articular cartilage destruction, local inflammatory response, pain and hypersensitivity to mechanical and thermal stimulation. Sensitization in the joint has been shown to change the dynamics of central neural networks leading to nocicepti...

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Bibliographic Details
Main Authors: Abou-Kheir, W. (Author), Fakhoury, M. (Author), Fouani, M. (Author), Lawand, N. (Author)
Format: Article
Language:English
Published: Elsevier B.V. 2021
Subjects:
Online Access:View Fulltext in Publisher
LEADER 01952nam a2200229Ia 4500
001 10.1016-j.crbeha.2021.100046
008 220427s2021 CNT 000 0 und d
020 |a 26665182 (ISSN) 
245 1 0 |a Evidence of cellular proliferation in the spinal cord and hippocampus in an animal model of osteoarthritis 
260 0 |b Elsevier B.V.  |c 2021 
856 |z View Fulltext in Publisher  |u https://doi.org/10.1016/j.crbeha.2021.100046 
520 3 |a Osteoarthritis is a degenerative joint disease that involves articular cartilage destruction, local inflammatory response, pain and hypersensitivity to mechanical and thermal stimulation. Sensitization in the joint has been shown to change the dynamics of central neural networks leading to nociceptive behaviors, learning and adaptation. In this study, we hypothesize that perturbation of local equilibrium, caused by flooding of excitatory neurotransmitters and neuropeptides from sensitized primary afferents, has the potential to induce cellular proliferation in the dorsal horn of the spinal cord and dentate gyrus of the hippocampus prompting reorganization of nociceptive circuits. Using an animal model of osteoarthritis, our findings have shown that knee joint inflammation induced by intra-articular injection of kaolin/carrageenan (K/C) can spark off an increase in the number of bromodeoxyuridine (BrdU)-positive neurons both in the dorsal horn of the spinal cord and the DG of the hippocampus, concomitant with nociceptive behaviors. This new evidence of cellular proliferation in the CNS may provide a new road map for the treatment of arthritic pain. © 2021 The Authors 
650 0 4 |a Hippocampus 
650 0 4 |a Neurogenic inflammation 
650 0 4 |a Osteoarthritis 
650 0 4 |a Pain 
650 0 4 |a Spinal cord 
700 1 |a Abou-Kheir, W.  |e author 
700 1 |a Fakhoury, M.  |e author 
700 1 |a Fouani, M.  |e author 
700 1 |a Lawand, N.  |e author 
773 |t Current Research in Behavioral Sciences