We compared circadian blood glucose variation with or without prelunch
α-glucosidase inhibitor (
α-GI) in type 2 diabetes inpatients injected twice daily with a biphasic insulin analog preparation (30Mix) morning and evening. Those without
α-GI use showed hyperglycemia after lunch, while those with
α-GI use showed favorable glycemic control after lunch in addition to breakfast and dinner. Blood glucose levels after lunch decreased significantly from 266.8±35.5 mg/d
l to 173.6±39.3 mg/d
l in 17 inpatients in whom
α-GI was first used concomitantly with the biphasic insulin analog preparation (p<0.0001) . HbA1c (JDS) also improved significantly from 7.42±0.7 % before
α-GI addition to 7.13±0.7 % 1 month after
α-GI addition (p<0.01) and the effect was maintained for 6 months with HbA1c of 7.10±0.7 % in 16 outpatients in whom
α-GI was first added just before lunch. Results suggest that adding
α-GI to the biphasic insulin analog preparation twice daily aids in managing postprandial blood glucose and is an effective therapeutic option in long-term glycemic control.
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