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Exp Clin Endocrinol Diabetes 2009; 117(1): 21-27
DOI: 10.1055/s-0028-1085459
Article

© Georg Thieme Verlag KG Stuttgart · New York

Selective Association of Plasma Non-esterified Fatty Acid Species with Circulating Interleukin-8 Concentrations in Humans

H. Staiger 1 , J. Wöll 1 , C. Haas 1 , F. Machicao 1 , E. D. Schleicher 1 , A. Fritsche 1 , N. Stefan 1 , H.-U. Häring 1
  • 1Department of Internal Medicine, Division of Endocrinology, Diabetology, Angiology, Nephrology, and Clinical Chemistry, Eberhard-Karls-University Tübingen, Tübingen, Germany
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Publication History

received 23.08.2007 first decision 07.01.2008

accepted 23.01.2008

Publication Date:
03 December 2008 (online)

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Abstract

Elevated plasma concentrations of non-esterified fatty acids (NEFA), due to high fat intake and/or adipose tissue lipolysis, are a hallmark of the metabolic syndrome. We assessed whether certain plasma NEFA species contribute to the chronic low-grade inflammatory state seen in the metabolic syndrome. We determined the fasting plasma NEFA patterns of 75 overweight non-diabetic subjects and analysed their relationship with plasma inflammatory parameters. After adjustment for gender, age, body fat, and waist-hip ratio, no strong correlations of single NEFA species with leukocyte number, C-reactive protein, interleukin-6, tumour necrosis factor-α, or monocyte chemoattractant protein-1 were detected. However, oleate was negatively (r=−0.36, p=0.0015) and myristate (r=0.41, p=0.0003) as well as the ω3-polyunsaturated NEFA α-linolenate (r=0.37, p=0.0011), eicosapentaenoate (r=0.40, p=0.0003), and docosahexaenoate (r=0.40, p=0.0004) were positively associated with interleukin-8 concentrations. The other NEFA species as well as the total plasma NEFA concentration did not correlate with interleukin-8. The correlations of myristate, oleate, and the sum of all ω3-polyunsaturated NEFA with interleukin-8 were independent of plasma tumour necrosis factor-α and overall adiposity. Our data demonstrate close and selective associations of oleate, myristate, and ω3-polyunsaturated NEFA with plasma concentrations of the pro-inflammatory chemokine interleukin-8. Thus, these NEFA species may represent specific determinants of plasma interleukin-8.

Key words

fatty acids - ω3-PUFA - inflammation - cytokines - interleukin-8 - metabolic syndrome

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Correspondence

Prof. Dr. med. H.-U. Häring

Internal Medicine IV

Medical Clinic Tübingen

Otfried-Müller-Str. 10

72076 Tübingen

Germany

Phone: +49/7071/298 27 35

Fax: +49/7071/29 27 84

Email: hans-ulrich.haering@med.uni-tuebingen.de

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