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Factors Associated for Mild Cognitive Impairment in Older Korean Adults with Type 2 Diabetes Mellitus
Yun Jeong Lee, Hye Mi Kang, Na Kyung Kim, Ju Yeon Yang, Jung Hyun Noh, Kyung Soo Ko, Byoung Doo Rhee, Dong-Jun Kim
Diabetes Metab J. 2014;38(2):150-157.   Published online April 18, 2014
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  • 21 Web of Science
  • 23 Crossref
AbstractAbstract PDFPubReader   

The aim of this study was to identify factors associated with mild cognitive impairment (MCI) in older Korean adults with type 2 diabetes mellitus.


A total of 226 older (age ≥65 years) adults without a history of cerebrovascular disease or dementia participated in this study. Cognitive function was assessed with the Montreal Cognitive Assessment-Korean version (MoCA-K). A MoCA-K score <23 was defined as MCI.


The prevalence of MCI was 32.7%. In a logistic regression analysis, age (≥74 years old vs. 65-68 years old; odds ratio [OR], 3.69; 95% confidence interval [CI], 1.55 to 8.82; P=0.003), educational background (college graduation vs. no school or elementary school graduation; OR, 0.16; 95% CI, 0.05 to 0.46; P=0.001), and systolic blood pressure (≥135 mm Hg vs. ≤120 mm Hg; OR, 3.25; 95% CI, 1.29 to 8.17; P=0.012) were associated with MCI.


More concentrated efforts focused on early detection and appropriate management of MCI may be required in older Korean adults with type 2 diabetes mellitus.


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Role of Glucocorticoid Receptor on Insulin Secretion and Synthesis in INS-1 Cells.
Ju Yeon Yang, Myong Su Kang, Tak Ho Song, In Kook Jeong, Pyong Ju Seo, Hee Jin Kim
Korean Diabetes J. 2006;30(6):428-434.   Published online November 1, 2006
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  • 24 Download
AbstractAbstract PDF
Glucocorticoids play important roles in the regulation of glucose homeostasis. It is well known that glucocorticoids reduce hepatic and peripheral tissue sensitivity to insulin, but the roles of glucocorticoids on insulin secretion and synthesis in pancreatic beta cells are still unclear. We have investigated the direct effects of glucocorticoids on insulin secretion and synthesis in rat insulinoma (INS-1) cells. METHODS: Insulin content and 11.2 mM glucose-stimulated insulin secretion (GSIS) were measured in INS-1 cells after culture with or without 1 micrometer dexamethasone (DEX). Preproinsulin mRNA levels were analyzed by real-time RT-PCR and normalized to the internal control. Effect of RU486 on DEX-induced inhibition of GSIS and preproinsulin mRNA synthesis was evaluated. RESULTS: Insulin content of INS-1 cells cultured in RPMI containing 11.2 mM glucose in the presence of DEX was not different from that of control cells. After 1-h preincubation in 2.8 mM glucose, basal insulin secretion from cells treated with DEX did not differ from that of controls, but GSIS was significantly reduced in the cells treated with DEX in comparison to control cells. The expression of preproinsulin mRNA relative to beta-actin mRNA was also lower in the cells treated with DEX. Glucocorticoid receptor antagonist improved DEX-induced inhibition of GSIS and preproinsulin mRNA synthesis. CONCLUSION: DEX inhibited GSIS and preproinsulin mRNA synthesis in INS-1 cells. Glucocorticoid receptor antagonist ameliorated the reduced GSIS and preproinsulin mRNA synthesis induced by DEX.

Diabetes Metab J : Diabetes & Metabolism Journal