Gp91phox-derived Reactive Oxygen Species/Urocortin 2/Corticotropin-releasing Hormone Receptor Type 2 Play an Important Role in Long-term Ultraviolet A Eye Irradiation-induced Photoaging

2015 ◽  
Vol 92 (1) ◽  
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Author(s):  
Keiichi Hiramoto ◽  
Yurika Yamate
2001 ◽  
Vol 48 (1) ◽  
pp. 1-9 ◽  
Author(s):  
KOZO HASHIMOTO ◽  
SHINYA MAKINO ◽  
KOICHI ASABA ◽  
MITSURU NISHIYAMA

2005 ◽  
Vol 82 (3-4) ◽  
pp. 177-184 ◽  
Author(s):  
Ekaterini Chatzaki ◽  
Christoforos Euthymiadis ◽  
Sofia Kyriaki ◽  
Maria Lambropoulou ◽  
Alexandra Tsaroucha ◽  
...  

2003 ◽  
Vol 115 (2) ◽  
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Hossein Pournajafi Nazarloo ◽  
Yasushi Tanaka ◽  
Maria Dorobantu ◽  
Kozo Hashimoto

2007 ◽  
Vol 14 (6) ◽  
pp. 568-577 ◽  
Author(s):  
Dan Jin ◽  
Ping He ◽  
Xingji You ◽  
Xiaoyan Zhu ◽  
Ling Dai ◽  
...  

2010 ◽  
Vol 30 (27) ◽  
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J. Breu ◽  
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...  

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M Willem ◽  
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U Konietzko ◽  
...  

Endocrinology ◽  
2015 ◽  
Vol 156 (3) ◽  
pp. 923-933 ◽  
Author(s):  
Theresa Schöttl ◽  
Lisa Kappler ◽  
Katharina Braun ◽  
Tobias Fromme ◽  
Martin Klingenspor

Abstract Accumulation of visceral fat is associated with metabolic risk whereas excessive amounts of peripheral fat are considered less problematic. At the same time, altered white adipocyte mitochondrial bioenergetics has been implicated in the pathogenesis of insulin resistance and type 2 diabetes. We therefore investigated whether the metabolic risk of visceral vs peripheral fat coincides with a difference in mitochondrial capacity of white adipocytes. We assessed bioenergetic parameters of subcutaneous inguinal and visceral epididymal white adipocytes from male C57BL/6N mice employing a comprehensive respirometry setup of intact and permeabilized adipocytes as well as isolated mitochondria. Inguinal adipocytes clearly featured a higher respiratory capacity attributable to increased mitochondrial respiratory chain content compared with epididymal adipocytes. The lower capacity of mitochondria from epididymal adipocytes was accompanied by an increased generation of reactive oxygen species per oxygen consumed. Feeding a high-fat diet (HFD) for 1 week reduced white adipocyte mitochondrial capacity, with stronger effects in epididymal when compared with inguinal adipocytes. This was accompanied by impaired body glucose homeostasis. Therefore, the limited bioenergetic performance combined with the proportionally higher generation of reactive oxygen species of visceral adipocytes could be seen as a candidate mechanism mediating the elevated metabolic risk associated with this fat depot.


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