Isoproterenol stimulates monocyte chemoattractant protein-1 expression and secretion in 3T3-L1 adipocytes - Research portal of Justus Liebig University Giessen:

Journal article

Isoproterenol stimulates monocyte chemoattractant protein-1 expression and secretion in 3T3-L1 adipocytes

Authors list: Kralisch, S; Klein, J; Lössner, U; Blüher, M; Paschke, R; Stumvoll, M; Fasshauer, M

Publication year: 2006

Pages: 12-16

Journal: Regulatory Peptides

Volume number: 135

Issue number: 1-2

ISSN: 0167-0115

DOI Link: https://doi.org/10.1016/j.regpep.2006.03.002

Publisher: Elsevier

Abstract:
Recently, monocyte chemoattractant protein (MCP)-1 has been characterized as a novel adipocytokine upregulated in obesity and insulin resistance which impairs insulin signaling in muscle and fat in vitro. Growing evidence, on the other hand, suggests that increased activity of the sympathetic nervous system is an integral part in the development of insulin resistance. In the current study, the impact of the beta-adrenergic agonist isoproterenol on MCP-1 mRNA synthesis and secretion was determined in 3T3-L1 adipocytes. Interestingly, isoproterenol increased MCP-1 secretion 3-fold. Furthermore, 10 mu M isoproterenol acutely induced MCP-1 mRNA by up to 5.3-fold in a time-dependent fashion with significant stimulation seen at concentrations as low as 0.3 mu M effector. Studies using pharmacological inhibitors suggested that basal and isoproterenol-induced MCP-1 expressions are mediated via beta-adrenergic receptors and protein kinase A. Moreover, acute activation of adenylyl cyclase by forskolin was sufficient to mimic the effects of isoproterenol. Taken together, our results demonstrate that isoproterenol induces MCP-1 expression and secretion via a classical G(S)-protein-coupled pathway and support the notion that MCP-1 might be an interesting novel candidate linking obesity and insulin resistance. (c) 2006 Elsevier B.V. All rights reserved.

Authors/Editors

- Uni.-Prof. Dr. Mathias Faßhauer

Citation Styles

Harvard Citation style: Kralisch, S., Klein, J., Lössner, U., Blüher, M., Paschke, R., Stumvoll, M., et al. (2006) Isoproterenol stimulates monocyte chemoattractant protein-1 expression and secretion in 3T3-L1 adipocytes, Regulatory Peptides, 135(1-2), pp. 12-16. https://doi.org/10.1016/j.regpep.2006.03.002

APA Citation style: Kralisch, S., Klein, J., Lössner, U., Blüher, M., Paschke, R., Stumvoll, M., & Fasshauer, M. (2006). Isoproterenol stimulates monocyte chemoattractant protein-1 expression and secretion in 3T3-L1 adipocytes. Regulatory Peptides. 135(1-2), 12-16. https://doi.org/10.1016/j.regpep.2006.03.002