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Diabetes Metab J : Diabetes & Metabolism Journal


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Ji Sook Han  (Han JS) 2 Articles
Effects of Vitamin D and Calcium Intervention on the Improvement of Resistance in Patients with Type 2 Diabetes Mellitus.
Young Mee Choi, Jun Ho Lee, Ji Sook Han
Korean Diabetes J. 2009;33(4):324-334.   Published online August 1, 2009
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  • 6 Crossref
AbstractAbstract PDF
Recent reports suggest that the intake of vitamin D and calcium may influence insulin resistance. The aim of this study was to assess the effects of vitamin D and calcium intervention on the improvement of blood glucose and insulin resistance in patients with type 2 diabetes mellitus (DM). METHODS: Fasting blood glucose, glycosylated hemoglobin A1c (HbA1C), serum 25(OH)D3, serum lipid levels, insulin secretion, and activity and dietary surveys were analyzed in type 2 DM patients both before and after a 12-week vitamin D and calcium intake intervention. RESULTS: The serum 25(OH)D3 level was found to be negatively correlated with insulin resistance and fasting blood glucose. Calcium intake level was also negatively correlated with insulin resistance. Fasting blood glucose, HbA1C, and HOMA-IR decreased significantly (P <0.05) following vitamin D and calcium intake intervention in the medical nutrition therapy (MNT) group, while there was no such change observed in the control group. Dietary calcium and vitamin D intakes were significantly (P <0.05) higher in the MNT group than in the control group. The concentrations of serum 25(OH)D3 and insulin secretion increased slightly in the MNT group following the 12-week intervention; however, these results did not reach statistical significance. CONCLUSION: The results of the present study indicate that calcium and vitamin D intervention may be helpful in improving fasting blood glucose, HbA1C, serum 25(OH)D3 and HOMA-IR in patients with type 2 DM who have insufficient serum 25(OH)D3 concentrations.


Citations to this article as recorded by  
  • Comparison of Biological Markers and Lifestyle Factors on the Presence of Diabetes Mellitus in Middle-aged adults
    Hye-Sun Keum, Soon-Rim Suh
    Journal of the Korea Academia-Industrial cooperation Society.2016; 17(2): 104.     CrossRef
  • A prospective randomized controlled trial of the effects of vitamin D supplementation on long-term glycemic control in type 2 diabetes mellitus of Korea
    Ohk-Hyun Ryu, Sungwha Lee, Jaemyung Yu, Moon-Gi Choi, Hyung Joon Yoo, Franco Mantero
    Endocrine Journal.2014; 61(2): 167.     CrossRef
  • A Study of Snack Consumption, Night-Eating Habits, and Nutrient Intake in Gestational Diabetes Mellitus
    Hee-jin Park, JinJu Lee, Ji-Myung Kim, Hyun Ah Lee, Sung-Hoon Kim, Yuri Kim
    Clinical Nutrition Research.2013; 2(1): 42.     CrossRef
  • Vitamin D and Diabetes
    Dallae Ju
    Journal of Korean Diabetes.2011; 12(2): 104.     CrossRef
  • Nutrients and Dish Intake by Fasting Blood Glucose Level
    Jihyun Choi, Hyun-Kyung Moon
    The Korean Journal of Nutrition.2010; 43(5): 463.     CrossRef
  • Vitamin D and Diabetes Mellitus
    Jung Hyun Noh
    Korean Diabetes Journal.2009; 33(4): 276.     CrossRef
The Effect of Green Tea Polyphenol on Plasma Glucose, Lipid Levels and Antioxidant Systems in Type 2 Diabetic Patients.
Ji Hye Suk, Mi Kyung Kim, Jae Won Ju, Ji Sook Han, Jeong Hyun Park
Korean Diabetes J. 2006;30(3):217-225.   Published online May 1, 2006
  • 2,461 View
  • 30 Download
  • 1 Crossref
AbstractAbstract PDF
Green-tea polyphenol (GTP) is a well known antioxidant with favorable effect on blood glucose and lipid level in animal models. We were to investigate the effects of GTP on plasma glucose, lipid and antioxidant systems in patients with type 2 diabetes. METHODS: We recruited non-complicated type 2 diabetic patients with stable glycemic control by oral hypoglycemic agents. Subjects were randomly assigned to GTP group or placebo group for 12 weeks. Fasting plasma glucose (FPG), HbA1c, C-peptide, lipid levels, liver function test, renal function test, urine microalbumin, malondialdehyde (MDA), superoxide dismutase (SOD) and glutathione peroxidase (GSHPx) activities were measured at baseline and after 12 weeks of treatment. RESULTS: At baseline, there were no significant differences in age, body mass index, duration of diabetes, dietary status, HbA1c, total cholesterol, LDL cholesterol, and HDL cholesterol levels between GTP and placebo group. However, FPG levels and triglyceride levels were significantly different between GTP and placebo group at baseline. In both of GTP and placebo group, there were no significant change after 12 weeks of treatment in FPG, HbA1c, total cholesterol, LDL cholesterol, triglyceride, levels of MDA, and GSHPx activities. SOD activities significantly increased after 12 weeks of treatment in both of GTP and placebo group. The increase of SOD activities were significantly higher in GTP group than in placebo group (P = 0.01). CONCLUSIONS: Supplementation of green tea polyphenol increased antioxidant activity in type 2 diabetic patients. The effect on plasma glucose and lipid level was not significant but should be confirmed in further large scaled studies.


Citations to this article as recorded by  
  • Effect of Young Barley Leaf Powder on Glucose Control in the Diabetic Rats
    Hee-Kyoung Son, Yu-Mi Lee, Yong-Hyun Park, Jae-Joon Lee
    The Korean Journal of Community Living Science.2016; 27(1): 19.     CrossRef

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