TY - JOUR
T1 - Androgen receptor null male mice develop late-onset obesity caused by decreased energy expenditure and lipolytic activity but show normal insulin sensitivity with high adiponectin secretion
AU - Fan, Wu Qiang
AU - Yanase, Toshihiko
AU - Nomura, Masatoshi
AU - Okabe, Taijiro
AU - Goto, Kiminobu
AU - Sato, Takashi
AU - Kawano, Hirotaka
AU - Kato, Shigeaki
AU - Nawata, Hajime
PY - 2005/4
Y1 - 2005/4
N2 - Androgen receptor (AR) null male mice (ARL-/Y) revealed late-onset obesity, which was confirmed by computed tomography-based body composition analysis. ARL-/Y mice were euphagic compared with the wild-type male (ARX/Y) controls, but they were also less dynamic and consumed less oxygen. Transcript profiling indicated that ARL-/Y mice had lower transcripts for the thermogenetic uncoupling protein 1, which was subsequently found to be ligand-dependently activated by AR. We also found enhanced secretion of adiponectin, which is insulin sensitizing, from adipose tissue and a relatively lower expression of peroxisome proliferator-activated receptor-γ in white adipose tissue in comparison to ARX/Y mice. Both factors might explain why the overall insulin sensitivity of AR L-/Y mice remained intact, despite their apparent obesity. The results revealed that AR plays important roles in male metabolism by affecting the energy balance, and it is negative to both adiposity and insulin sensitivity.
AB - Androgen receptor (AR) null male mice (ARL-/Y) revealed late-onset obesity, which was confirmed by computed tomography-based body composition analysis. ARL-/Y mice were euphagic compared with the wild-type male (ARX/Y) controls, but they were also less dynamic and consumed less oxygen. Transcript profiling indicated that ARL-/Y mice had lower transcripts for the thermogenetic uncoupling protein 1, which was subsequently found to be ligand-dependently activated by AR. We also found enhanced secretion of adiponectin, which is insulin sensitizing, from adipose tissue and a relatively lower expression of peroxisome proliferator-activated receptor-γ in white adipose tissue in comparison to ARX/Y mice. Both factors might explain why the overall insulin sensitivity of AR L-/Y mice remained intact, despite their apparent obesity. The results revealed that AR plays important roles in male metabolism by affecting the energy balance, and it is negative to both adiposity and insulin sensitivity.
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U2 - 10.2337/diabetes.54.4.1000
DO - 10.2337/diabetes.54.4.1000
M3 - Article
C2 - 15793238
AN - SCOPUS:16244382558
VL - 54
SP - 1000
EP - 1008
JO - Diabetes
JF - Diabetes
SN - 0012-1797
IS - 4
ER -