Adipose gene expression profiles related to metabolic syndrome using microarray analyses in two different models

Hye Jin Yoo, Hwan Jin Hwang, Tae Woo Jung, Ja Young Ryu, Ho Cheol Hong, Hae Yoon Choi, Sei Hyun Baik, Kyung Mook Choi

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Background: Peroxisome proliferator-activated receptor-γ (PPAR-γ) agonist has a wide-ranging influence on multiple components of metabolic syndrome. The Otsuka Long-Evans Tokushima Fatty (OLETF) rat is a useful animal model of metabolic syndrome. To determine genes related to metabolic syndrome, we examined overlapping genes that are simultaneously decreased by PPAR-γ agonists and increased in OLETF rats using microarrays in two different models. Methods: In the first microarray analysis, PPAR-γ agonist-treated db/db mice were compared to standard diet-fed db/db mice. In the second microarray analysis, OLETF rats were compared to Long-Evans Tokushima Otsuka (LETO) rats (control of OLETF rats). Results: Among the overlapping genes, in the present study, we validated that lipocalin-2 expression was significantly decreased in the visceral adipose tissue of PPAR-γ agonist-treated db/db mice compared to standard diet-fed db/db mice and increased in OLETF rats compared to LETO rats using real time reverse transcription polymerase chain reaction. Furthermore, we showed for the first time that lipocalin-2 expression was significantly increased in the visceral adipose tissues of obese humans compared with nonobese humans. In addition, the expression level of lipocalin-2 in human visceral adipose tissue had a significant positive correlation with body mass index, serum interleukin-6, adipocyte fatty acid binding protein levels, and white blood cell count. Conclusion: Lipocalin-2 was confirmed to be a significant adipokine affected by PPAR-γ agonist and obesity in the present study. Also, for the first time in human visceral adipose tissue, it was determined that the expression of lipocalin-2 from obese humans was significantly increased and correlated with circulating inflammatory markers.

Original languageEnglish
Pages (from-to)356-365
Number of pages10
JournalDiabetes and Metabolism Journal
Volume38
Issue number5
DOIs
Publication statusPublished - 2014

Keywords

  • Lipocalin-2
  • Microarray
  • PPAR gamma

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism

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    Yoo, H. J., Hwang, H. J., Jung, T. W., Ryu, J. Y., Hong, H. C., Choi, H. Y., Baik, S. H., & Choi, K. M. (2014). Adipose gene expression profiles related to metabolic syndrome using microarray analyses in two different models. Diabetes and Metabolism Journal, 38(5), 356-365. https://doi.org/10.4093/dmj.2014.38.5.356