Rosiglitazone induces Pdk4 expression in rat and human adipose tissue ex vivo and in 3T3–F442A adipocytes. Rosiglitazone induces Pdk4 expression in rat.

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Rosiglitazone induces Pdk4 expression in rat and human adipose tissue ex vivo and in 3T3–F442A adipocytes. Rosiglitazone induces Pdk4 expression in rat and human adipose tissue ex vivo and in 3T3–F442A adipocytes. Rat periepididymal (A) and human subcutaneous abdominal WAT (B) were cultured in DMEM containing 12.5 mmol/l glucose and treated or not with 1 μmol/l rosiglitazone for 5 h. C: 3T3–F442A adipocytes at day 6 of differentiation were cultured in DMEM containing 25 mmol/l glucose and treated or not for 2 h with 1 μmol/l rosiglitazone. Total RNA was extracted, and PDK4, PDK2, and PC mRNA were analyzed by real-time RT-PCR with normalization to glyceraldehyde-3-phosphate dehydrogenase (GAPDH) mRNA. D: Protein extracts were obtained from differentiated 3T3–F442A adipocytes and subjected to Western blotting using antibodies against PDK4, PDK2, and the E2 subunit of PDC complex. Data are means ± SE from three to five independent experiments, each performed in triplicate, and are expressed as percent of control. **P < 0.01. Thomas Cadoudal et al. Diabetes 2008;57:2272-2279 ©2008 by American Diabetes Association