Diabetes Care, Vol 20, Issue 1 55-58, Copyright © 1997 by American Diabetes Association
Chronic administration of levosulpiride and glycemic control in IDDM patients with gastroparesis
P Melga, C Mansi, E Ciuchi, R Giusti, L Sciaba and R Prando
Department of Endocrine and Metabolic Sciences, University of Genoa, Italy.
OBJECTIVE: We evaluated the effect of chronic administration of
levosulpiride, a prokinetic drug that is a selective antagonist for D2
dopamine receptors, on the glycemic control of IDDM subjects. RESEARCH
DESIGN AND METHODS: The study was performed on 40 long-standing IDDM
subjects with clinical signs of autonomic neuropathy and delayed gastric
emptying. Gastric emptying time and glycemic parameters (diurnal glycemic
profile and HbA1c) were checked under double-blind conditions before and
after the administration of levosulpiride at the dosage of 25 mg t.i.d.
orally for 6 months, or placebo. RESULTS: No significant differences were
noted in the glycemic and HbA1c values before and after 6 months of placebo
administration. In contrast, after 6 months of levosulpiride, glycemic
control had improved (HbA1c 6.7 +/- 0.4 and 5.7 +/- 0.3%, P < 0.01; mean
daily glycemia 10.9 +/- 0.8 and 8.8 +/- 0.4 mmol/l, P < 0.05, at the
start and at the end of the study), while the dosage of injected insulin
(0.65 +/- 0.02 IU.kg-1.day-1) and the number of severe hypoglycemic
episodes remained unchanged. After 6 months of levosulpiride therapy, the
time of gastric emptying was significantly reduced from 321 +/- 14 to 261
+/- 9 min (P < 0.001) and dyspeptic symptoms had improved. CONCLUSIONS:
Our results show the importance of gastric emptying in the maintenance of
glycemic control and the usefulness of chronic administration of
levosulpiride in diabetic subjects with gastroparesis.