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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

Neurokinin-A in bone and joint tissues: changes in adjuvant arthritis.

The localization of neurokinin A (NK-A) in the normal ankle joint of rats was investigated by an immunoelectron microscopic technique with specific antisera to NK-A. Immunoreactivity was detected in bone matrix, myelinated nerve fiber in the periosteum, and bone marrow and synovial cells. No immunoreactivity was observed in osteoblasts, osteocytes, and osteoclasts. Using radioimmunoassay (RIA), a detectable concentration of NK-A was observed in the bone marrow, periosteum, cortical bone, and ankle of normal rats. In rats with chronic adjuvant arthritis, induced by intradermal injection of mycobacterium butyricum in paraffin oil into the base of the tail, the concentrations of NK-A using RIA in ankles and spinal cords were found to be significantly increased compared with acute or control rats. There were no significant differences between the latter two. Similarly, increased NK-A labeling was observed using immunoelectron microscopy in bone matrix and bone marrow monocyte cells of the chronic arthritic rats. These findings indicate the existence of as well as a biological role of NK-A in bone and joint tissues.[1]

References

  1. Neurokinin-A in bone and joint tissues: changes in adjuvant arthritis. Elhassan, A.M., Lindgren, J.U., Hultenby, K., Adem, A. J. Bone Miner. Res. (1999) [Pubmed]
 
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