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Horm Metab Res. 2007 Mar;39(3):212-7.

Association of free fatty acids (FFA) and tumor necrosis factor-alpha (TNF-alpha) and insulin-resistant metabolic disorder.

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  • 1Division of Endocrinology and Diabetes, Department of Medicine, Saitama Medical Center, Saitama Medical University, Kawagoe city, Saitama, Kamisho Health Insurance Center, Tokyo, Japan. eioh@saitama-med.ac.jp

Abstract

The roles of free fatty acids (FFA), tumor necrosis factor-alpha (TNF-alpha), and adiponectin in the development of the insulin-resistant metabolic disorder in several subjects have been studied. A total of 70 Japanese male subjects were selected according to the following three sets of criteria: subjects in group A had, (1) a fasting plasma glucose (FPG)>or=110 to <140 mg/dl, (2) a triglyceride (TG) level>or=150 mg/dl, (3) a systolic blood pressure (SBP)>or=140 and/or diastolic blood pressure (DBP)>or=90 mmHg, and (4) a body mass index (BMI)>or=25 kg/m2 (age=53.4+/-8.5 years, BMI=27.0+/-1.3 kg/m2, n=16). Subjects in group B had, (1) FPG<110 mg/dl, (2) TG<150 mg/dl, (3) SBP<140 and DBP<90 mmHg, and (4) BMI>or=25 kg/m2 (age=47.2+/-10.3 years, BMI=26.6+/-1.31 kg/m2, n=38). Subjects in group C had, (1) FPG<110 mg/dl, (2) TG<150 mg/dl, (3) SBP<140 and DBP<90 mmHg, and (4) 20>or=BMI<22 kg/m2 (age=50.4+/-9.3 years, BMI=20.9+/-0.6 kg/m2, n=16). The homeostasis model assessment of insulin resistance in group A (2.7+/-1.4) was significantly higher (p<0.0001) than in groups B (1.6+/-0.7) and C (0.9+/-0.5). FFA in group A (1.17+/-0.57 mEq/l) was significantly higher than in groups B (0.62+/-0.23 mEq/l) and C (0.48+/-0.16 mEq/l) (p<0.0001). Serum TNF-alpha in group A (1.36+/-0.62 pg/ml) was significantly higher than in groups B (0.95+/-0.35 pg/ml; p=0.003) and C (0.76+/-0.09 pg/ml; p=0.0013). No significant differences in the serum level of adiponectin were observed between groups A and B or between groups B and C. The results suggest that FFA and possibly TNF-alpha levels are closely related to the development of insulin resistance in subjects with metabolic disorders.

PMID:
17373637
DOI:
10.1055/s-2007-970421
[PubMed - indexed for MEDLINE]
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