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Original Articles
Effects of Rosiglitazone on Inflammation in Otsuka Long-Evans Tokushima Fatty Rats
Jin Woo Lee, Il Seong Nam-Goong, Jae Geun Kim, Chang Ho Yun, Se Jin Kim, Jung Il Choi, Young IL Kim, Eun Sook Kim
Korean Diabetes J. 2010;34(3):191-199.   Published online June 30, 2010
DOI: https://doi.org/10.4093/kdj.2010.34.3.191
  • 5,009 View
  • 27 Download
  • 7 Crossref
AbstractAbstract PDFPubReader   
Background

Inflammation plays a role in the response to metabolic stress in type 2 diabetes. However, the effects of rosiglitazone on inflammation of skeletal muscle have not been fully examined in type 2 diabetes.

Methods

We investigated the effects of the insulin-sensitizing anti-diabetic agent, rosiglitazone, on the progression of skeletal muscle inflammation in Otsuka Long-Evans Tokushima Fatty (OLETF) type 2 diabetic rats. We examined the expression of serologic markers (serum glucose, insulin and free fatty acid) and inflammatory cytokines (tumor-necrosis factor-α, interleukin [IL]-1β and IL-6) in OLETF rats from early to advanced diabetic stage (from 28 to 40 weeks of age).

Results

Serum glucose and insulin concentrations were significantly decreased in rosiglitazone-treated OLETF rats compared to untreated OLETF rats. Rosiglitazone treatment significantly decreased the concentrations of serum inflammatory cytokines from 28 to 40 weeks of age. The mRNA expression of various cytokines in skeletal muscle was reduced in rosiglitazone-treated OLETF rats compared with untreated OLETF rats. Furthermore, rosiglitazone treatment resulted in the downregulation of ERK1/2 phosphorylation and NF-κB expression in the skeletal muscle of OLETF rats.

Conclusion

These results suggest that rosiglitazone may improve insulin sensitivity with its anti-inflammatory effects on skeletal muscle.

Citations

Citations to this article as recorded by  
  • Rosiglitazone Elicits an Adiponectin-Mediated Insulin-Sensitizing Action at the Adipose Tissue-Liver Axis in Otsuka Long-Evans Tokushima Fatty Rats
    Jia Li, Yao-Ming Xue, Bo Zhu, Yong-Hua Pan, Yan Zhang, Chunxia Wang, Yuhao Li
    Journal of Diabetes Research.2018; 2018: 1.     CrossRef
  • Sirt1 and Sirt6 Mediate Beneficial Effects of Rosiglitazone on Hepatic Lipid Accumulation
    Soo Jin Yang, Jung Mook Choi, Eugene Chang, Sung Woo Park, Cheol-Young Park, Aimin Xu
    PLoS ONE.2014; 9(8): e105456.     CrossRef
  • Beneficial effects of co-enzyme Q10 and rosiglitazone in fructose-induced metabolic syndrome in rats
    Suzan M. Mansour, Hala F. Zaki, Ezz-El-Din S. El-Denshary
    Bulletin of Faculty of Pharmacy, Cairo University.2013; 51(1): 13.     CrossRef
  • Chromium Picolinate and Rosiglitazone Improve Biochemical Derangement in a Rat Model of Insulin Resistance: Role of TNF-a and Leptin
    Suzan M. Mansour, Hala F. Zaki, Ezz-El-Din El-Denshar
    Pharmacologia.2013; 4(3): 186.     CrossRef
  • Angiotensin Receptor Blockade Increases Pancreatic Insulin Secretion and Decreases Glucose Intolerance during Glucose Supplementation in a Model of Metabolic Syndrome
    Ruben Rodriguez, Jose A. Viscarra, Jacqueline N. Minas, Daisuke Nakano, Akira Nishiyama, Rudy M. Ortiz
    Endocrinology.2012; 153(4): 1684.     CrossRef
  • Rodent Models for Metabolic Syndrome Research
    Sunil K. Panchal, Lindsay Brown, Andrea Vecchione
    BioMed Research International.2011;[Epub]     CrossRef
  • Letter: Effects of Rosiglitazone on Inflammation in Otsuka Long-Evans Tokushima Fatty Rats (Korean Diabetes J 2010;34:191-9)
    Soo Jin Yang, Cheol-Young Park
    Korean Diabetes Journal.2010; 34(4): 261.     CrossRef
The Role of Hypothalamic FoxO1 on Hyperphagia in Streptozotocin-Induced Diabetic Mice.
Il Seong Nam-Goong, Jae Geun Kim, Se Jin Kim, Seong Jae Hur, Jin Woo Lee, Eun Sook Kim, Chang Ho Yun, Byung Ju Lee, Young Il Kim
Korean Diabetes J. 2009;33(5):375-381.   Published online October 1, 2009
DOI: https://doi.org/10.4093/kdj.2009.33.5.375
  • 2,127 View
  • 24 Download
AbstractAbstract PDF
BACKGROUND
Streptozotocin-induced diabetic animals are characterized by hyperphagia due to deficiencies of insulin and leptin. Forkhead box-containing protein of the O subfamily-1 (FoxO1) regulates energy homeostasis by regulating energy expenditure and food intake as well as mediating insulin and leptin signals in the hypothalamus. To identify the mediator of diabetic hyperphagia, we examined the effects of insulin or leptin on hypothalamic FoxO1 expression in a diabetic animal model. METHODS: Diabetes was induced in mice (C57BL/6) by intraperitoneal administration of streptozotocin (200 mg/kg). Stainless steel cannula was implanted into the lateral ventricle of the brain in each mouse. After three weeks, the mice were administered saline, insulin or leptin via intracerebroventricular (ICV) route. The medial hypothalamus was isolated to evaluate the mRNA expressions of FoxO1 and neuropeptides. RESULTS: Streptozotocin-induced diabetic mice exhibited significant elevations of blood glucose and food intake and significantly low levels of serum insulin and leptin. The levels of hypothalamic FoxO1 mRNA were significantly increased in diabetic mice. The hypothalamic expression of neuropeptide Y (NPY) mRNA was increased, but the expression of preproopiomelanocortin (POMC) mRNA was decreased in diabetic mice. ICV administration of insulin or leptin attenuated the upregulation of hypothalamic FoxO1 mRNA, and resulted in downregulation of NPY mRNA and upregulation of POMC mRNA in diabetic mice. CONCLUSION: We observed that the expression of hypothalamic FoxO1 mRNA was increased in streptozotocin-induced diabetic mice, and that it was significantly attenuated by central administration of insulin or leptin. These results suggest that hypothalamic FoxO1 is the direct mediator of diabetic hyperphagia.

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