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A long-term effect of epalrestat on motor conduction velocity of diabetic patients: ARI-Diabetes Complications Trial (ADCT).

Author(s): Matsuoka K, Sakamoto N, Akanuma Y, Hotta N, Shichiri M, Toyota T, Oka Y, Kawamori R, Shigeta Y, ADCT Study Group

Affiliation(s): Saiseikai Shibuya Satellite Clinic, 3-2-3 Shibuya, Tokyo 105-0002, Japan.

Publication date & source: 2007-09, Diabetes Res Clin Pract., 77 Suppl 1:S263-8. Epub 2007 Jun 27.

In order to study a long-term effect along with adverse action of epalrestat, an aldose reductase inhibitor, a randomized, prospective study was conducted over the period of 3 years at 112 facilities. Six hundred and three diabetic patients with median motor conduction velocity (MCV)>40 m/s, HbA1c<9% were randomly allocated to epalrestat (50 mg/day p.o. ac, t.i.d.) group (E group: n=289, age: 61+/-9.8 y.o.) and a control group (C group: n=305, age: 61+/-9.1 y.o.). MCV was measured once a year for 3 years. MCV (m/s, M+/-S.D.) on baseline, 1 year and 3 years, was 52.0+/-4.5, 52.2+/-4.9, 52.1+/-4.6 in E group and 53.3+/-4.4, 52.4+/-4.2, 52.0+/-4.6 in C group, respectively. After 3 years, difference from the baseline was significant (p<0.0001, E versus C). Among the subjects with HbA1c<7.0%, C group showed marked deterioration of MCV while in E group, there was no significant deterioration (p<0.001). Although, the subjects with pre-proliferative or proliferative retinopathy, there was no difference between E and C groups for 3 years, in subjects with background retinopathy or without retinopathy, deterioration rate of E group was significantly less than that of C group (p<0.0001). Epalrestat was found to prevent deterioration of MCV especially in well-controlled patients without advanced complications. No remarkable side effects serious enough to discontinue the study was observed.

Page last updated: 2007-10-18

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