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Open Access Research article

The serum vaspin levels are reduced in Japanese chronic hemodialysis patients

Junko Inoue1, Jun Wada1*, Sanae Teshigawara1, Kazuyuki Hida1, Atsuko Nakatsuka1, Yuji Takatori1, Shoichirou Kojo1, Shigeru Akagi1, Kazushi Nakao1, Nobuyuki Miyatake2, John F McDonald3 and Hirofumi Makino1

Author Affiliations

1 Department of Medicine and Clinical Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan

2 Department of Hygiene, Faculty of Medicine, Kagawa University, Kagawa 761-0793, Japan

3 Millipore, Linco Research, St. Charles, MO, 63304, USA

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BMC Nephrology 2012, 13:163  doi:10.1186/1471-2369-13-163

Published: 3 December 2012

Abstract

Background

Visceral adipose tissue-derived serine proteinase inhibitor (vaspin) is an adipokine identified in genetically obese rats that correlates with insulin resistance and obesity in humans. Recently, we found that 7% of the Japanese population with the minor allele sequence (A) of rs77060950 exhibit higher levels of serum vaspin. We therefore evaluated the serum vaspin levels in Japanese chronic hemodialysis patients.

Methods

Healthy Japanese control volunteers (control; n = 95, 49.9±6.91 years) and Japanese patients undergoing hemodialysis therapy (HD; n = 138, 51.4±10.5 years) were enrolled in this study, and serum samples were subjected to the human vaspin RIA system.

Results

The measurement of the serum vaspin levels demonstrated that a fraction of control subjects (n = 5) and HD patients (n = 11) exhibited much higher levels (> 10 ng/ml; VaspinHigh group), while the rest of the population exhibited lower levels (< 3 ng/ml; VaspinLow group). By comparing the patients in the VaspinLow group, the serum vaspin levels were found to be significantly higher in the control subjects (0.87±0.24 ng/ml) than in the HD patients (0.32±0.15 ng/ml) (p < 0.0001). In the stepwise regression analyses, the serum creatinine and triglyceride levels were found to be independently and significantly associated with the vaspin concentrations in all subjects.

Conclusions

The creatinine levels are negatively correlated with the serum vaspin levels and were significantly reduced in the Japanese HD patients in the VaspinLow group.

Keywords:
Adipokine; End-stage renal disease; Hemodialysis