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Figure 3 | Arthritis Research & Therapy

Figure 3

From: The effects of 1α,25-dihydroxyvitamin D3 on matrix metalloproteinase and prostaglandin E2 production by cells of the rheumatoid lesion

Figure 3

The effects of 1α,25-hydroxyvitamin D3 (1,25) on matrix metalloproteinase (MMP)-1 and MMP-3 production by human articular chondrocytes (HACs) after 48 h incubation. (a) MMP-1 production by HAC (n = 3) showing normalized data for control; + 1,25 (10-8 mol/l); + interleukin (IL)-1β (0.05 ng/ml); and + IL-1β and 1,25 (0.05 ng/ml and 10-8 mol/l, respectively). Before normalization, control values for MMP-1 were in the range 50–150 ng/ml culture medium/106 cells per 48 h. (b) MMP-3 production by HAC (n = 3) showing normalized data for control; +1,25; + IL-1β; and + IL-1β and 1,25. Before normalization, control values for MMP-3 were in the range 10–40 ng/ml culture medium/106 cells per 48 h. Values are shown as means ± SEM.

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