NOS2 and diabetes mellitus: Especially, at 200 mg.kg−1.day−1, the crude polysaccharide significantly reduced the level of nitric oxide (NO) (70.12 ± 1.2 μmol mg−1 protein) and the activity of iNOS (U mg−1 protein), and the fluorescence intensity of AGEs was remarkably inhibited, which showed that the D. huoshanense polysaccharide has potential for the prevention and cure of diabetic cataract.