Retraction to: Acta Pharmacologica Sinica (2012) 33, 27–33; doi:10.1038/aps.2011.155; published online 12 Dec 2011

The authors are retracting their article entitled “Lipid metabolism disturbances and AMPK activation in prolonged propofol-sedated rabbits under mechanical ventilation” [Acta Pharmacol Sin 2012; 33: 27–33]. Several expressions of this article were identical to those of previously published paper by Dr Petros YPSILANTIS et al [Anesth Analg 2007; 105: 155–66] and some original data were inappropriately manipulated. The authors would like to express their most sincere apology to Dr Petros YPSILANTIS and the Anesthesia & Analgesia and to the editors and readers of Acta Pharmacologica Sinica.