Moreover, given these concerns (and consistent with our data showing that SSc fibroblasts overexpress mPGES-1), it is interesting to note that prostanoid (including PGE2) production was greatly elevated in scleroderma cells compared with control cells and, given that excess added prostenoids reduced collagen and CCN2 overexpression in SSc fibroblasts, may act to limit further increases in collagen and CCN2 levels in these cells [50]. This evidence concerns the gene CCN2 and scleroderma.