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Diabetes Metab J : Diabetes & Metabolism Journal



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Clinical Characteristics of Non-obese, Adult-onset Diabetes Requiring Insulin Treatment.
Se Eun Park, Wan Sub Shim, Mi Young Do, Eun Seok Kang, Yumie Rhee, Chul Woo Ahn, Sung Kil Lim, Kyung Rae Kim, Hyun Chul Lee, Bong Soo Cha
Korean Diabetes J. 2005;29(6):557-565.   Published online November 1, 2005
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The aim of this study is to clarify the clinical characteristics of non-obese, adult-onset diabetes requiring insulin treatment and to compare the different characteristics of the three groups categorized according to diabetes classification. METHODS: Total 128 diabetic patients who were non-obese (BMI < 25kg/m2) and had been diagnosed with diabetes after 20 years old, requiring insulin treatment were enrolled in the study. We divided the patients into three groups : 56 patients with type 1, 37 with unclassifiable, and 35 with type 2 diabetes. The type of diabetes was assigned by comparing serum C-peptide concentration and clinical phenotypes. RESULTS: Type 2 and unclassifiable diabetes had no differences in BMI, the interval to use insulin, daily insulin dose, the level of HDL cholesterol and the positive rate for GAD Ab, but type 1 diabetes didn't. However, type 1 diabetes and unclassifiable group was lower prevalence of microvascular complications than type 2 diabetes (retinopathy 38.2, 52.8, 84.8 % ; nephropathy 37.7, 36.7, 74.2 % ; neuropathy 36.7, 36.7, 72.7 %, P<0.05). The prevalence of macrovascular complications was higher in the order of type 1, unclassifiable, and type 2 diabetes (11.1, 29.4, 72.7 %, respectively, all P<0.05). CONCLUSION: The clinical characteristics were similar between unclassifiable and type 2 diabetes, but the prevalence of microvascular complication in unclassifiable group had no significant difference compared with type 1 diabetes. The prevalence of macrovascular complications was significantly higher in the order of type 1, unclassifiable, and type 2 diabetes.
Chronic Diabetic Complications in the Insulin- Treated Animal Model of Type 2 Diabetes Mellitus.
Jee Won Park, Sung Kyu Lee, Hyo Jung Kim, Hae Lim Noh, Chang Young Hah, Su Jin Lee, Yoon Sok Chung, Kwan Woo Lee, Hyun Man Kim, Eun Ju Paek
Korean Diabetes J. 2001;25(3):200-210.   Published online June 1, 2001
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Non-Insulin Dependent Diabetes Mellitus (NIDDM) is a characterized by insulin resistance and impairment of beta cell function. OLETF male rat usually developed NIDDM and obesity at 20 weeks old spontaneously. It is a metabolically characterized by insulin resistance in onset of early disease. However, body weight and insulin secretory function was gradually reduced during the diabetes developed. These characteristics of disease is similar to Korean type 2 diabetic patients. NIDDM patients in Korea are thought to be different from traditional NIDDM in western countries. They are non obese type and also has reduced insulin secretory function compared to western countries. These patients are not easily managed on diet and/or oral hypoglycemic agent. Reduced C-peptide and insulin concentrations in these patients are similar to patients with IDDM. In these patients, insulin therapy is effective to control glucose level. Therefore, we investigated the effect of insulin and oral hypoglycemic therapy to glucose control and severity of chronic complications in OLETF male rats of 6weeks (42 weeks old) and 14 weeks (50 weeks old) treated groups. MATERIAL AND METHODS: The OLETF male rats which are 36 weeks old is diagnosed to NIDDM. A total of 20 rats were stratified into the three groups: control group (n=3), OHA's group; rats treated by OHA's (n=3) and insulin group; rats treated with insulin (n=4). We evaluated anthropometry, fasting glucose and 75 gram OGATT, nerve conduction studies, sclerotic degree of kidney and thickness of carotid arteries at 42 and 50 weeks old. RESULTS: In the 42 weeks old groups (6 weeks treated group), there was a significant difference in weight gain in group 3 but no differences were observed in kidney tissue pathology and thickness of carotid arteries. In the 50 weeks old groups (14 weeks treated group), there were also no changes in the kidneys and arteries, but weight gain and peak amplitude in NCV was significantly higher in insulin - treated group. CONCLUSIONS: OLETF male rats as NIDDM animal mocel, with late stage diabetic complications show weight loss and decreased insulin secretory capacity. Insulin treated group shows improved blood glucose control. Also it showed improved severity of diabetic neuropathy.

Diabetes Metab J : Diabetes & Metabolism Journal
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