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- _4 label "Selventa" provenance.
- large_corpus.bel rights "Copyright (c) 2011-2012, Selventa. All rights reserved." provenance.
- _3 value "OBJECTIVE: To examine the effect of a high-fat diet on gene expression in adipose tissues and to determine induction kinetics of adipose monocyte chemoattractant protein-1 and -3 (MCP-1 and MCP-3) in diet-induced obesity (DIO) and the effect of a lack of MCP-1 signaling on DIO susceptibility and macrophage recruitment into adipose tissue. RESEARCH METHODS AND PROCEDURES: Obese and lean adipose tissues were profiled for expression changes. The time-course of MCP-1 and MCP-3 expression was examined by reverse transcriptase-polymerase chain reaction. Plasma MCP-1 levels were determined by enzyme-linked immunosorbent assay (ELISA). Chemokine receptor-2 (CCR2) knockout mice were placed on the high-fat diet to determine DIO susceptibility. Macrophage infiltration in adipose tissue was examined by immunohistochemistry with F4/80 antibody. RESULTS: DIO elevated adipose expression of many inflammatory genes, including MCP-1 and MCP-3. Adipose MCP-1 and MCP-3 mRNA levels increased within 7 days of starting a high-fat diet, with elevation of plasma MCP-1 detected after 4 weeks on the diet. The induction of MCP-1 and MCP-3 expression preceded that of tumor necrosis factor-alpha. The elevated plasma MCP-1 concentration in obese mice was partially reversed by treatment with AM251. No change in DIO susceptibility and macrophage accumulation in adipose tissue were observed in CCR2 knockout mice, which lack the MCP-1 receptor CCR2. DISCUSSION: A high-fat diet elevated adipose expression of inflammatory genes, including early induction of MCP-1 and MCP-3, supporting the view that obese adipose tissues contribute to systemic inflammation. However, despite increased MCP-1 in obesity, disruption of MCP-1 signaling did not confer resistance to DIO in mice or reduce adipose tissue macrophage infiltration." provenance.
- _3 wasQuotedFrom 16129712 provenance.
- assertion hadPrimarySource 16129712 provenance.
- large_corpus.bel title "BEL Framework Large Corpus Document" provenance.
- large_corpus.bel description "Approximately 61,000 statements." provenance.
- assertion wasDerivedFrom large_corpus.bel provenance.
- assertion wasDerivedFrom _3 provenance.
- large_corpus.bel authoredBy _4 provenance.
- large_corpus.bel version "20131211" provenance.