Residual B Cell Function in Patients with Long-Standing NIDDM and its Relation to Metabolic Control and Diabetic Complications.
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- IWASE MASANORI
- Second Department of Internal Medicine, Faculty of Medicine, Kyushu University
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- KIKUCHI MASANORI
- Second Department of Internal Medicine, Faculty of Medicine, Kyushu University
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- NUNOI KIYOHIDE
- Second Department of Internal Medicine, Faculty of Medicine, Kyushu University
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- MAKI YUKIHIRO
- Second Department of Internal Medicine, Faculty of Medicine, Kyushu University
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- WAKISAKA MASANORI
- Second Department of Internal Medicine, Faculty of Medicine, Kyushu University
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- WADA MIYA
- Second Department of Internal Medicine, Faculty of Medicine, Kyushu University
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- FUJISHIMA MASATOSHI
- Second Department of Internal Medicine, Faculty of Medicine, Kyushu University
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抄録
We have evaluated the residual pancreatic B cell function by glucagon load test in 28 patients with non-insulin-dependent diabetes mellitus (NIDDM) of a duration of 20 years or more. The increase in serum C-peptide at 6 minutes after glucagon administration (ΔC-peptide) was used as an index of residual B cell function. There was much lessΔC-peptide in patients treated with insulin than in those treated with sulfonylurea (p<0.05), and it was significantly correlated with the body mass index (r=0.40, p<0.05). Long term metabolic control assessed by the average annual mean fasting blood glucose for the observation period (mean, 21 years) was not correlated with ΔC-peptide (r=-0.13). The prevalence of retinopathy which needed photocoagulation therapy and of neuropathy in ptaients with poor residual B cell function (ΔC-peptide≤0.3ng/ml) was the same as that in those with good residual B cell function (ΔC-peptide≥1.0ng/ml). The present study shows that the residual B cell function is not correlated with long term glycemic control and the prevalence of diabetic complications in long-standing NIDDM patients.
収録刊行物
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- Endocrinologia Japonica
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Endocrinologia Japonica 35 (6), 803-808, 1988
一般社団法人 日本内分泌学会