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Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Cell+Metab 2016 ; 23 (5): 821-36 Nephropedia Template TP
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Chronic Activation of ?2 AMPK Induces Obesity and Reduces ? Cell Function #MMPMID27133129
Yavari A; Stocker C; Ghaffari S; Wargent E; Steeples V; Czibik G; Pinter K; Bellahcene M; Woods A; Martínez de Morentin P; Cansell C; Lam B; Chuster A; Petkevicius K; Nguyen-Tu MS; Martinez-Sanchez A; Pullen T; Oliver P; Stockenhuber A; Nguyen C; Lazdam M; O?Dowd J; Harikumar P; Tóth M; Beall C; Kyriakou T; Parnis J; Sarma D; Katritsis G; Wortmann D; Harper A; Brown L; Willows R; Gandra S; Poncio V; de Oliveira Figueiredo M; Qi N; Peirson S; McCrimmon R; Gereben B; Tretter L; Fekete C; Redwood C; Yeo G; Heisler L; Rutter G; Smith M; Withers D; Carling D; Sternick E; Arch J; Cawthorne M; Watkins H; Ashrafian H
Cell Metab 2016[May]; 23 (5): 821-36 PMID27133129show ga
Despite significant advances in our understanding of the biology determining systemic energy homeostasis, the treatment of obesity remains a medical challenge. Activation of AMP-activated protein kinase (AMPK) has been proposed as an attractive strategy for the treatment of obesity and its complications. AMPK is a conserved, ubiquitously expressed, heterotrimeric serine/threonine kinase whose short-term activation has multiple beneficial metabolic effects. Whether these translate into long-term benefits for obesity and its complications is unknown. Here, we observe that mice with chronic AMPK activation, resulting from mutation of the AMPK ?2 subunit, exhibit ghrelin signaling-dependent hyperphagia, obesity, and impaired pancreatic islet insulin secretion. Humans bearing the homologous mutation manifest a congruent phenotype. Our studies highlight that long-term AMPK activation throughout all tissues can have adverse metabolic consequences, with implications for pharmacological strategies seeking to chronically activate AMPK systemically to treat metabolic disease.