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

Figure 1

Blood glucose higher in diabetic patients. On average, diabetic participants had significantly higher glucose concentration of 241 mg/dL ± 30 than nondiabetic control participants 117 mg/dL ± 9 in their serum ( = 6–11, ).