Adipocyte pyruvate dehydrogenase kinase 4 expression is associated with augmented PPARγ upregulation in early-life programming of later obesity

Holness, M.J., Zariwala, M., Walker, C.G. and Sugden, M.C. 2012. Adipocyte pyruvate dehydrogenase kinase 4 expression is associated with augmented PPARγ upregulation in early-life programming of later obesity. FEBS Open Bio. 2, pp. 32-36.

TitleAdipocyte pyruvate dehydrogenase kinase 4 expression is associated with augmented PPARγ upregulation in early-life programming of later obesity
AuthorsHolness, M.J., Zariwala, M., Walker, C.G. and Sugden, M.C.
Abstract

We studied adipocytes from 8-week-old control rat offspring (CON) or rat offspring subjected to maternal low (8%) protein (MLP) feeding during pregnancy/lactation, a procedure predisposing to obesity. Acute exposure to isoproterenol or adenosine enhanced PDK4 and PPARc mRNA gene expression in CON and MLP adipocytes. Enhanced adipocyte Pdk4 expression orrelated with increased PPARc expression. Higher evels of PDK4 and PPARc were observed in MLP adipocytes.
SCD1 is a PPARc target. Isoproterenol enhanced adipocyte PDK4 and SCD1 gene expression in parallel.
This could reflect augmented PPARc expression together with enhanced lipolytic stimulation to supply endogenous PPARc ligands, allowing enhanced adipocyte PDK4 and SCD1 expression via PPARc activation. In contrast, the effect of adenosine to increase PDK4 expression is independent of stimulation of lipolysis and, as SCD1 expression was unaffected by adenosine, unlikely to reflect PPARc activation. Increased adipocyte expression of both PDK4 and SCD1 in the MLP model could participate as components of a ‘‘thrifty’’ phenotype, favouring the development of obesity

JournalFEBS Open Bio
Journal citation2, pp. 32-36
ISSN2211-5463
Year2012
PublisherElsevier
Publisher's versionZARIWALA FEBS 2012-1.pdf
Digital Object Identifier (DOI)doi:10.1016/j.fob.2012.02.003
Publication dates
Published05 Mar 2012
LicenseCC BY-NC-ND 3.0

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