This paper is retracted at the author's request. Reference: Yueping Chen, Shihui Liu, Guangyong Chen: Aggravation of Cerebral Ischemia/Reperfusion Injury by Peroxisome Proliferator-Activated Receptor-Gamma Deficiency via Endoplasmic Reticulum Stress. Med Sci Monit, 2019; 25:7518-7526. DOI: 10.12659/MSM.915914.