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Letter: Association of Vaspin with Metabolic Syndrome: The Pivotal Role of Insulin Resistance (Diabetes Metab J 2014;38:143-9)
Sung Hee Choi
Diabetes & Metabolism Journal 2014;38(3):240-241.
Published online: June 17, 2014
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Division of Endocrinology and Metabolism, Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea.

Corresponding author: Sung Hee Choi. Division of Endocrinology and Metabolism, Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 82 Gumi-ro 173beon-gil, Bundang-gu, Seongnam 463-707, Korea.

Copyright © 2014 Korean Diabetes Association

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Dear Editor,
Vaspin is an interesting adipokine, which was isolated from visceral white adipose tissue of obese, diabetic rat model [1,2]. Because there has been reports regarding the tight link between metabolic diseases, such as obesity, diabetes, and metabolic syndrome (MS), and visceral fat, vaspin has been focused as a potential biomarker for various metabolic diseases [3,4,5]. However, different vaspin concentrations showed a large scale of standard deviation in different individuals and a lack of consistency between metabolic parameters and the levels of vaspin according to previous reports, warranting more human studies and clearer explanations.
In this article entitled "Association of vaspin with MS: the pivotal role of insulin resistance", Esteghamati et al. [6] also showed the association between serum vaspin concentration and the components of MS in Iranian adults [6]. They showed that vaspin is associated with the components of metabolic syndrome: high triacyglyceride (TG) level, high glucose in particular, and obesity indices. However this association was abolished after the adjustment for homeostasis model assessment of insulin resistance and high-sensitivity C-reactive protein levels. Recently, our group reported that serum vaspin concentration was higher in men with MS and in women with coronary atherosclerosis in around 400 Korean subjects [7]. Among the components of MS, body mass index (BMI), waist circumference, and TG showed independent associations with plasma vaspin levels. Although these previous Iranian study and Korean study similarly investigated the correlation between serum vaspin levels and various metabolic parameters, there are several differences.
Our data did not show any significant correlation between vaspin concentration and serum glucose. Our subjects were enrolled from routine health examination center and showed relatively normal range of serum glucose levels (mean value of 94 mg/dL in normal subjects vs. 115.3 mg/dL in MS subjects). However, fasting glucose levels showed a strong correlation in the article of Iranian subjects, showing the highest odds ratio among the components of MS in both men and women. In that study, the mean value of plasma glucose level was over 140 mg/dL and the mean BMI is over 27.9 in men and over 29.07 in women. On the contrary, the data from Korean subjects showed that the mean value of BMI was around 24, which is drastically different from Iranian subjects.
It is interesting to see this article considering the huge differences in anthropometry and clinical characteristics between Korean and Iranian subjects with or without MS. The higher fasting blood glucose and much higher obesity index of Iranian subjects could influence on the stronger influence of insulin resistance and chronic inflammation on serum vaspin concentration. Of note, despite these differences between two ethnical groups, hyper-TG and obesity index was a common metabolic factors, which showed significant correlation with vaspin levels in both groups. Overall, vaspin should be investigated in more detail to understand its role in humans.

No potential conflict of interest relevant to this article was reported.

  • 1. Hida K, Wada J, Eguchi J, Zhang H, Baba M, Seida A, Hashimoto I, Okada T, Yasuhara A, Nakatsuka A, Shikata K, Hourai S, Futami J, Watanabe E, Matsuki Y, Hiramatsu R, Akagi S, Makino H, Kanwar YS. Visceral adipose tissue-derived serine protease inhibitor: a unique insulin-sensitizing adipocytokine in obesity. Proc Natl Acad Sci U S A 2005;102:10610-10615. ArticlePubMedPMC
  • 2. Wada J. Vaspin: a novel serpin with insulin-sensitizing effects. Expert Opin Investig Drugs 2008;17:327-333.ArticlePubMed
  • 3. Youn BS, Kloting N, Kratzsch J, Lee N, Park JW, Song ES, Ruschke K, Oberbach A, Fasshauer M, Stumvoll M, Bluher M. Serum vaspin concentrations in human obesity and type 2 diabetes. Diabetes 2008;57:372-377. ArticlePubMedPDF
  • 4. Seeger J, Ziegelmeier M, Bachmann A, Lossner U, Kratzsch J, Bluher M, Stumvoll M, Fasshauer M. Serum levels of the adipokine vaspin in relation to metabolic and renal parameters. J Clin Endocrinol Metab 2008;93:247-251. ArticlePubMedPDF
  • 5. Aust G, Richter O, Rohm S, Kerner C, Hauss J, Kloting N, Ruschke K, Kovacs P, Youn BS, Bluher M. Vaspin serum concentrations in patients with carotid stenosis. Atherosclerosis 2009;204:262-266. ArticlePubMed
  • 6. Esteghamati A, Noshad S, Mousavizadeh M, Zandieh A, Nakhjavani M. Association of vaspin with metabolic syndrome: the pivotal role of insulin resistance. Diabetes Metab J 2014;38:143-149. ArticlePubMedPMC
  • 7. Choi SH, Kwak SH, Lee Y, Moon MK, Lim S, Park YJ, Jang HC, Kim MS. Plasma vaspin concentrations are elevated in metabolic syndrome in men and are correlated with coronary atherosclerosis in women. Clin Endocrinol (Oxf) 2011;75:628-635. ArticlePubMed

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      H.H. Wang, Q.F. Wang
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      Letter: Association of Vaspin with Metabolic Syndrome: The Pivotal Role of Insulin Resistance (Diabetes Metab J 2014;38:143-9)
      Diabetes Metab J. 2014;38(3):240-241.   Published online June 17, 2014
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    Choi SH. Letter: Association of Vaspin with Metabolic Syndrome: The Pivotal Role of Insulin Resistance (Diabetes Metab J 2014;38:143-9). Diabetes Metab J. 2014;38(3):240-241.

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