PMID- 17712116 OWN - NLM STAT- MEDLINE DCOM- 20071102 LR - 20091119 IS - 1930-7381 (Print) IS - 1930-7381 (Linking) VI - 15 IP - 8 DP - 2007 Aug TI - Macrophage-colony stimulating factor in obese adipose tissue: studies with heterozygous op/+ mice. PG - 1988-95 AB - OBJECTIVE: We examined the gene expression of macrophage-colony stimulating factor (M-CSF) in mice with diet-induced obesity and in genetically obese mice. We also examined the effect of decreased M-CSF signaling on the susceptibility to obesity and macrophage recruitment into the adipose tissue of mice. RESEARCH METHODS AND PROCEDURES: The adipose tissue from mice with diet-induced obesity, obese KKA(y) mice, and ob/ob obese mice was used for RNA preparation. Production of M-CSF and monocyte chemoattractant protein-1 (MCP-1) was examined by quantitative real-time polymerase chain reaction (PCR) and enzyme-linked immunosorbent assay. The op/+ heterozygous mice, with decreased functional M-CSF expression, were placed on a high-fat diet or crossed with KKA(y) mice to study the susceptibility to obesity. The gene expression of macrophage markers in adipose tissue was examined. RESULTS: The expression of M-CSF was not significantly changed in mice on a high-fat diet or in either type of genetic obesity (KKA(y) or ob/ob mice). No change in the degree of obesity or macrophage-related gene expression (F4/80, CD68, and MCP-1) in the adipose tissue was observed in op/+ mice compared with +/+ control mice, which were either treated with a high-fat diet or crossed with KKA(y) mice. DISCUSSION: This study demonstrated that there was no significant change in the expression of M-CSF in the adipose tissue from obese mice and only a minor phenotypic change, such as macrophage infiltration, in the adipose tissue from op/+ mice, suggesting that M-CSF does not play a major role in macrophage recruitment in the adipose tissue of obese mice. FAU - Sugita, Satoshi AU - Sugita S AD - Department of Molecular Medicine and Metabolism, Medical Research Institute, Tokyo Medical and Dental University, 2-3-10 Kanda-surugadai, Tokyo 101-0062, Japan. FAU - Kamei, Yasutomi AU - Kamei Y FAU - Oka, Jun-Ichiro AU - Oka J FAU - Suganami, Takayoshi AU - Suganami T FAU - Ogawa, Yoshihiro AU - Ogawa Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Obesity (Silver Spring) JT - Obesity (Silver Spring, Md.) JID - 101264860 RN - 0 (Antigens, Differentiation) RN - 0 (Chemokine CCL2) RN - 0 (RNA, Messenger) RN - 0 (Tumor Necrosis Factor-alpha) RN - 0 (monocyte-macrophage differentiation antigen) RN - 81627-83-0 (Macrophage Colony-Stimulating Factor) RN - EC 2.7.10.1 (Receptor, Macrophage Colony-Stimulating Factor) SB - IM MH - Animals MH - Antigens, Differentiation/biosynthesis/genetics MH - Chemokine CCL2/biosynthesis/genetics MH - Crosses, Genetic MH - Histocytochemistry MH - Macrophage Colony-Stimulating Factor/*biosynthesis/genetics MH - Mice MH - Mice, Inbred C57BL MH - Mice, Obese MH - Obesity/genetics/*immunology MH - RNA, Messenger/biosynthesis/genetics MH - Receptor, Macrophage Colony-Stimulating Factor/biosynthesis/genetics MH - Reverse Transcriptase Polymerase Chain Reaction MH - Subcutaneous Fat/*immunology MH - Tumor Necrosis Factor-alpha/biosynthesis/genetics EDAT- 2007/08/23 09:00 MHDA- 2007/11/06 09:00 CRDT- 2007/08/23 09:00 PHST- 2007/08/23 09:00 [pubmed] PHST- 2007/11/06 09:00 [medline] PHST- 2007/08/23 09:00 [entrez] AID - 15/8/1988 [pii] AID - 10.1038/oby.2007.237 [doi] PST - ppublish SO - Obesity (Silver Spring). 2007 Aug;15(8):1988-95. doi: 10.1038/oby.2007.237.