title: Contrasting effects of cold acclimation versus obesogenic diets on chemerin gene expression in brown and brite adipose tissues.
abstract: Based on results from a signal sequence trap, we investigated chemerin gene expression in brown adipose tissue. Male NMRI mice were exposed to 30, 22 or 4 °C for 3 weeks, or were fed control (chow) diet, cafeteria diet or high-fat diet at thermoneutrality for the same time. In brown adipose tissue, cold acclimation strongly diminished chemerin gene expression, whereas obesogenic diets augmented expression. Qualitatively, changes in expression were paralleled in brite/beige adipose tissues (e.g. inguinal), whereas white adipose tissue (epididymal) and muscle did not react to these cues. Changes in tissue expression were not directly paralleled by alterations in plasma levels. Both these intact animal studies and brown adipocyte cell culture studies indicated that the gene expression regulation was not congruent with a sympathetic/adrenergic control. The data are discussed in relation to suggested endocrine, paracrine and autocrine effects of chemerin.
authors.forename: Ida R
authors.initials: IR
authors.lastname: Hansen
authors.forename: Kim M
authors.initials: KM
authors.lastname: Jansson
authors.forename: Barbara
authors.initials: B
authors.lastname: Cannon
authors.forename: Jan
authors.initials: J
authors.lastname: Nedergaard
mesh_terms: D000064:Acclimatization / Q000187:drug effects / Q000235:genetics*; D052437:Adipocytes, Brown / Q000187:drug effects / Q000378:metabolism; D002001:Adipose Tissue, Brown / Q000187:drug effects / Q000378:metabolism*; D052436:Adipose Tissue, White / Q000187:drug effects / Q000378:metabolism*; D000818:Animals; D002478:Cells, Cultured; D018925:Chemokines; D002630:Chemotactic Factors / Q000097:blood / Q000235:genetics; D003080:Cold Temperature; D059305:Diet, High-Fat; D020869:Gene Expression Profiling; D005786:Gene Expression Regulation / Q000187:drug effects; D036341:Intercellular Signaling Peptides and Proteins / Q000097:blood / Q000235:genetics; D007473:Ion Channels / Q000378:metabolism; D008297:Male; D051379:Mice; D024101:Mitochondrial Proteins / Q000378:metabolism; D009638:Norepinephrine / Q000494:pharmacology; D009765:Obesity / Q000235:genetics*; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D000071256:Uncoupling Protein 1; D015430:Weight Gain / Q000187:drug effects / Q000235:genetics
chemical_list: D018925:Chemokines; D002630:Chemotactic Factors; D036341:Intercellular Signaling Peptides and Proteins; D007473:Ion Channels; D024101:Mitochondrial Proteins; D012333:RNA, Messenger; D000071256:Uncoupling Protein 1; C523686:chemerin protein, mouse; D009638:Norepinephrine