MMP9 and myopathy: Various proinflammatory molecules including cytokines, metalloproteinases (MMP-2, MMP-9), chemokines, chemokine receptors, and adhesion molecules such as ILI, TNF-α, IL1β, TGF-β, MHC-I, ICAM-I, LFA-1, MMP-2, MMP-9, CCR-2, CCR-4, CXCR-3, Mig, and IP-10 are increased in the circulation or are overexpressed on the endothelial cells, activated T-cells, nerves, or muscle tissues in patients with autoimmune neuropathies or myopathies [51–59].