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. 2011 Oct;18(4):162–167. doi: 10.5214/ans.0972.7531.1118413

Fig. 1:

Fig. 1:

Inhibition of MMPs through TRPV1 and Cannabinoid Receptors. TRPV1 upregulates MMP expression leading to chronic NP. CB1/CB2 upregulate AP1 and NFkβ, which then further upregulates TIMP 1-4. TIMP1-4 will in turn downregulate MMP expression. The relationship between AP1 and NFkβ and MMP is still unclear.