Imbalance of the Nerve Growth Factor and Its Precursor as a Potential Biomarker for Diabetic Retinopathy

Figure 5

MMP-7 activity is decreased in vitreous but not in serum. (a) In vitreous, MMP-7 activity was decreased in diabetic () compared to nondiabetic control group (). (b) In serum, MMP-7 activity detected in the diabetic groups () was similar to the activity in nondiabetic controls ().

(a)

(b)