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Diabetes Metab J : Diabetes & Metabolism Journal


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Ha Young Kim  (Kim HY) 3 Articles
Two Cases of Fulminant Type 1 Diabetes.
Yu Min Lee, Kyoung Hee Kweon, Seoung Hoon Baek, Ha Young Kim, Byoung Hyun Park, Chung Gu Cho
Korean Diabetes J. 2005;29(4):378-382.   Published online July 1, 2005
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AbstractAbstract PDF
Type 1 diabetes is characterized by insulin deficiency due to destruction of pancreatic beta-cells. Patients with type 1 diabetes, with no islet autoantibodies, but with acute onset, are classified as having idiopathic of type 1B diabetes. In 2000, this diabetes subtype was described and named "fulminant type 1 diabetes". The clinical characteristics of this subtype of type 1 diabetes are: a remarkably abrupt onset of disease, very short(<1 week) duration of diabetic symptoms, acidosis at diagnosis, negative status of islet-related autoantibodies, virtually no C-peptide secretion(<10 microgram/day in urine), a near normal HbA1c level and an elevated serum pancreatic enzyme level. Since 1988, several cases showing the clinical characteristics of fulminant type diabetes have been reported, with this subtype accounting for approximately 20% of Japanese type 1 diabetes. There have been few cases of fulminant type 1 diabetes in Korea. Herein, our experience of two cases of fulminant type 1 diabetes is reported, with a review of the literature.
Prolonged QT Interval and the BMI, Systolic BP and HDL-Cholesterol in Type 2 Diabetic Patients.
Chunggu Cho, Hye Jung No, Hyo Jeong Oh, Bong Joon Yang, Ha Young Kim, Byoung Hyun Park
Korean Diabetes J. 2005;29(3):215-222.   Published online May 1, 2005
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AbstractAbstract PDF
A prolonged QT interval is considered as an indicator of an increased risk of coronary heart disease, malignant ventricular arrhythmias and/or sudden death. QT interval prolongation has been reported to be a common finding in patients with obesity and diabetic autonomic neuropathy and it is well known that both leptin and insulin stimulate sympathetic activity. The waist to hip ratio and the plasma insulin levels were recently reported to be correlated with the QT intervals and the sympathovagal balance. The aim of the present study was to evaluate the association of the features of metabolic syndrome and the QT interval in type 2 diabetic patients. METHODS: We studied 114 type 2 diabetes(45 males and 69 females). The QT intervals were measured by a software program and then the QTc was calculated. The fasting glucose, total cholesterol, triglyceride and high-density lipoprotein(HDL)-cholesterol, HbAIC and Cpeptide were measured. All the patients received clinical tests for cardiovascular autonomic dysfunction by the Ewing's method. RESULTS: A significant difference was found in the mean QT interval between the patients with an autonomic score>=1 and the patients who were without cardiac autonomic neuropathy(autonomic score=0). On Pearson's simple regression analysis, the QT interval showed positive correlations with the BMI, fasting C-peptide, systolic blood pressure(sBP), and age. The QT interval also showed negative correlation with the HDL-cholesterol. The associations of the QTc with triglyceride, fasting glucose, and the autonomic score did not reach statistical significance. On the multiple regression analysis, the QT interval was independently correlated with BMI, systolic BP and HDL-cholesterol but not with the other variables that we tested(c-peptide, autonomic score, diastolic blood pressure, glycated hemoglobin, triglyceride and cholesterol). CONCLUSION: Our results suggest that a variety of features of metabolic syndrome are associated with QT interval prolongation in the type 2 diabetic patients
The Effects of Uncoupling Protein 3 Overexpression on Glucose Metabolism in OLETF Rats in Vivo and Cultured Skeletal Muscle Cells in Vitro.
Jeong Hee Han, Hye Seon Park, Jung Min Koh, Ha Young Kim, Ho Kyung Kang, In Kyu Lee, Joong Yeol Park, Sung Kwan Hong, Jae Dam Lee, Ki Up Lee
Korean Diabetes J. 2001;25(6):460-468.   Published online December 1, 2001
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AbstractAbstract PDF
UCP3 is a mitochondrial membrane protein expressed selectively in the skeletal muscle and brown adipose tissue. Since the skeletal muscle is the main organ determining insulin sensitivity in the body, it was hypothesized that UCP3 overexpression in skeletal muscle cells would improve glucose metabolism. METHODS: An adenovirus-UCP3 was produced by a recombinant DNA method. OLETF rats were divided into 2 groups. Four rats were injected with the adenovirus- UCP3 (UCP3 group) and others were injected with the adenovirus (control group) in the skeletal muscle. The UCP3 group was provided with the same quantity of food as that consumed by the control group on the previous day. Insulin sensitivity was evaluated by the euglycemic hyperinsulinemic clamp method. In a separate experiment, glucose transport and glycogen synthesis we evaluated in C2C12 cells transfected with ether an adenovirus or the adenovirus-UCP3. RESULTS: The insulin sensitivity improved significantly and the body weight decreased in the UCP3 group. The glucose transport and glycogen synthesis were higher in the UCP3-C2C12 skeletal muscle cells at the basal state. After insulin treatment, glucose transport and glycogen synthesis were also higher in the UCP3-C2C12 cells but the increments were reduced after treatment with wortmannin, a PI3K inhibitor. CONCLUSION: Insulin sensitivity was higher in the UCP3-overexpressed OLETF rats in the in vivo study. UCP3 transfection also increased glucose transport and glycogen synthesis in the cultured skeletal muscle cells by a PI3K dependent mechanism.

Diabetes Metab J : Diabetes & Metabolism Journal
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