title: Increased serum resistin levels in patients with type 2 diabetes are not linked with markers of insulin resistance and adiposity.
abstract: The role of resistin in human biology remains uncertain. We measured serum resistin levels in Japanese patients with (n=111) and without (n=98) type 2 diabetes mellitus and investigated the significance of this hormone in the pathophysiology of diabetes. The levels of serum adiponectin and leptin were also measured. Resistin levels were increased significantly in patients with type 2 diabetes compared with non-diabetic subjects (24.7+/-2.6 vs. 15.0+/-1.2 ng/ml, p=0.0013). However, there was no correlation in either patient group between serum resistin levels and markers of insulin resistance, obesity or hyperlipidaemia. These results were in direct contrast to the data of leptin or adiponectin, both of which were closely related to these clinical markers of diabetes. Multivariate regression analysis on the combined data of the two groups demonstrated that the presence of diabetes and HDL cholesterol levels were significant predictors of serum resistin levels (diabetes: beta=0.159, p=0.035; HDL: beta=-0.172, p=0.039). No correlation was observed between C-reactive protein and resistin adjusted for BMI. Taken together, these findings demonstrate that serum resistin levels are increased in patients with type 2 diabetes, but this increase is not linked to markers of insulin resistance or adiposity. Further studies are necessary to elucidate the significance of serum resistin concentration in human pathophysiology.
authors.affiliation: Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Hirokoji, Kawaramachi-dori, Kamikyo-ku, Japan. goji@koto.kpu-m.ac.jp
authors.forename: G
authors.initials: G
authors.lastname: Hasegawa
authors.forename: M
authors.initials: M
authors.lastname: Ohta
authors.forename: Y
authors.initials: Y
authors.lastname: Ichida
authors.forename: H
authors.initials: H
authors.lastname: Obayashi
authors.forename: M
authors.initials: M
authors.lastname: Shigeta
authors.forename: M
authors.initials: M
authors.lastname: Yamasaki
authors.forename: M
authors.initials: M
authors.lastname: Fukui
authors.forename: T
authors.initials: T
authors.lastname: Yoshikawa
authors.forename: N
authors.initials: N
authors.lastname: Nakamura
mesh_terms: D052242:Adiponectin; D000368:Aged; D015415:Biomarkers; D015992:Body Mass Index; D001835:Body Weight; D002097:C-Reactive Protein / Q000032:analysis; D003924:Diabetes Mellitus, Type 2 / Q000097:blood*; D005260:Female; D006729:Hormones, Ectopic / Q000097:blood*; D006801:Humans; D007333:Insulin Resistance; D036341:Intercellular Signaling Peptides and Proteins / Q000097:blood; D020738:Leptin / Q000097:blood; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000097:blood*; D018579:Patient Selection; D012016:Reference Values; D052243:Resistin
chemical_list: D052242:Adiponectin; D015415:Biomarkers; D006729:Hormones, Ectopic; D036341:Intercellular Signaling Peptides and Proteins; D020738:Leptin; C499624:RETN protein, human; D052243:Resistin; D002097:C-Reactive Protein