Effect of Nifedipine on Severe Experimental Cataract in Diabetic Rats

Journal of Pharmacological Sciences

Kenji Sakamoto¹  Mariko Takenaka¹  Takafumi Kasahara¹  Maki Saito¹  Kunio Ishii¹  Sokichi Kametaka¹  Tsutomu Nakahara¹  Mayumi Ueo¹ 

[1] Department of Molecular Pharmacology, Kitasato University School of Pharmaceutical Sciences, Japan

关键词: cataract;    diabetes;    lens;    L-type Ca2+ channel;    streptozotocin;   

DOI  :  10.1254/jphs.FP0072294

学科分类：药学

来源: Nihon Yakuri Gakkai Henshuubu / Japanese Pharmacological Society

【 摘 要 】

References(42)Cited-By(4)We examined the effects of Ca2+-channel blockers on sugar cataract formation in streptozotocin (65 mg/kg, i.v.)-induced diabetic rats that were given 5% D-glucose as drinking water. The diabetic rats were treated with an L-type Ca2+-channel blocker, nifedipine or verapamil, for 9 weeks from the 3rd day of streptozotocin injection. Using the full lens images of the horizontal plane captured with the new digital camera system that we developed recently, the cataract formation was quantitatively assessed in parallel with the conventional scaling method. In the animal model of diabetes mellitus, the cataracts at the peripheral region of the lens were detected 2 weeks after induction of hyperglycemia and progressed depending on the length of the diabetic period. The majority of them developed mature cataracts after 9 weeks of hyperglycemia. Nifedipine slowed the progression rate of diabetic cataracts without affecting the period of time required for the onset of this disease, whereas verapamil had no significant inhibitory effect on the diabetic cataract. These findings suggest that nifedipine may be considered as a candidate drug to suppress the progression of diabetic cataracts.

【 授权许可】

Unknown