Diabetes & Metabolism Journal

Ja Young Ryu (Ryu JY)

1 Article

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; Diabetes Metab J. 2014;38(5):356-365. Published online October 17, 2014; DOI: https://doi.org/10.4093/dmj.2014.38.5.356

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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.

Citations

Citations to this article as recorded by

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