- The Effects of Type 1 diabetes on the Metabolism and Density of Bone in Children.
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Sang Jun Lee, Dong Wook Lee, Hyun Dae Yoon, Kyu Chang Won, Hyoung Woo Lee, Yoon Jung Cho, Heung Sik Kim, Seung Beom Han, In Kyu Lee, Hee Ja Lee
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J Korean Endocr Soc. 2000;15(4-5):582-590. Published online January 1, 2001
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 Abstract
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- BACKGROUND
The effects of type 1 diabetes mellitus on the metabolism and density of bone in children are still controversial. The aim of this study was to evaluate the effects of type 1 diabetes on markers of bone metaboism and BMD in children by analyzing BMI, HbA1c, biochemical markers, sex hormones, bone metabolism and BMD related factors. MRTHODS: We compared 36 patients (15 males, 21 females) with type 1 diabetes mellitus to 167 healthy children (84 males, 83 females) who lived in Taegu. We measured FBS, serum calcium, phosphorus, HbA1c, osteocalcin, testosterone and estradiol for analyzing the factors which influence on bone metabolism and BMD. BMD was measured at lumbar spine, femur and total body by DEXA. RESULTS: The BMI and serum level of osteocalcin were not different in both groups. Serum calcium level was significantly lower in the diabetic group than that of control group. BMD had no difference in both groups. There was no correlation between BMD and glycemic control (HbA1c) or duration of diabetes. There was good correlation (r=0.78, p<0.01) between serum testosterone level and BMD in male patient group. There was negative correlation (r=-0.4) between serum osteocalcin level and BMD. There was significant correlation (male: r=0.76, female: r=0.66) between lean body mass and BMD in both group. CONCLUSION: The BMD was not decreased significantly and bone turn-over was normal in children with noncomplicated type 1 diabetes mellitus, and BMD was not influenced by the duration or degree of metabolic control of diabetes. But, we need further study including other risk factors that have influences on BMD and bone metabolism in type 1 diabetes mellitu.
- A Case of Thyrotoxic Periodic Paralysis Presenting as Ventricular Tachycardia.
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Woun Seok Ryu, Sang Mi Lee, Sung Jun Sim, Dong Wook Lee, Jong Dae Han, Eun A Chung, In Kwan Song, Hwan Won Choi, Dong Youb Cha, Ie Byung Park
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J Korean Endocr Soc. 1999;14(3):587-591. Published online January 1, 2001
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Abstract
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- sociated with hyperthyroidism occurs in 2.0% of Graves disease and is characterized by myasthenia or bilateral flaccid paralysis of lower extremity, in some cases, it may be accompanied with cardiac arrhythmias which are mostly due to hypokalemia. The most common type of cardiac arrhythmias associated with hyperthyroidism is sinus tachycardia, 1015% of patients have atrial fibrillation. Rarely, ventricular tachycardia or ventricular fibrillation develop and lead to cardiac arrest in severe case. A 26-year-old man was admitted to the hospital because of weakness of lower extremity. The initial EKG showed ventricular tachycardia. The laboratory results were, TSH 0.08 microunit/mL, free T4 4.11 ng/mL, T3 2.88 ng/mL, serum K 1.9 mEq/L. He was diagnosed as ventricular tachycardia associated with hypokalemic thyrotoxic periodic paralysis. His symptoms improved during the treatment with propylthiouracil and potassium replacement. We report a case of thyrotoxic periodic paralysis presenting as ventricular tachycardia with brief review of literatures.
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