Inverse correlation between serum levels of selenoprotein p and adiponectin in patients with type 2 diabetes

Hirofumi Misu, Kazuhide Ishikura, Seiichiro Kurita, Yumie Takeshita, Tsuguhito Ota, Yoshiro Saito, Kazuhiko Takahashi, Shuichi Kaneko, Toshinari Takamura

Research output: Contribution to journalArticlepeer-review

70 Citations (Scopus)

Abstract

Background: We recently identified selenoprotein P (SeP) as a liver-derived secretory protein that causes insulin resistance in the liver and skeletal muscle; however, it is unknown whether and, if so, how SeP acts on adipose tissue. The present study tested the hypothesis that SeP is related to hypoadiponectinemia in patients with type 2 diabetes. Methodology/Principal Findings: We compared serum levels of SeP with those of adiponectin and other clinical parameters in 36 patients with type 2 diabetes. We also measured levels of blood adiponectin in SeP knockout mice. Circulating SeP levels were positively correlated with fasting plasma glucose (r = 0.35, P = 0.037) and negatively associated with both total and high-molecular adiponectin in patients with type 2 diabetes (r = -0.355, P = 0.034; r = -0.367, P = 0.028). SeP was a predictor of both total and high-molecular adiponectin, independently of age, body weight, and quantitative insulin sensitivity index (β = -0.343, P = 0.022; β = -0.357, P = 0.017). SeP knockout mice exhibited an increase in blood adiponectin levels when fed regular chow or a high sucrose, high fat diet. Conclusions/Significance: These results suggest that overproduction of liver-derived secretory protein SeP is connected with hypoadiponectinemia in patients with type 2 diabetes.

Original languageEnglish
Article numbere34952
JournalPloS one
Volume7
Issue number4
DOIs
Publication statusPublished - 2012 Apr 4

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)
  • General

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