Retraction.

Wang, P., Su, C., Li, R., Wang, H., Ren, Y., Sun, H., Yang, J., Sun, J., Shi, J., Tian, J., & Jiang, S. (2014). Mechanisms and effects of curcumin on spatial learning and memory improvement in APPswe/PS1dE9 mice. Journal of Neuroscience Research, 92, 218-231. https://doi.org/10.1002/jnr.23322 The above article, published online on 23 November 2013 in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between the journal's Editor-in-Chief, Dr Eric M. Prager, and Wiley Periodicals, Inc. The retraction has been agreed due to the unreliable nature of the figures presented. Concerns were originally raised via PubPeer (https://pubpeer.com/publications/AFF7C528364ED2B17D56AFF1C9BAFD). After an investigation conducted by the journal's Editor-in-Chief, in accordance with the guidelines from the Committee on Publication Ethics (COPE), it was determined that the figures presented in the article could not be validated. Consequently, the main findings of the article, and the conclusions drawn, can no longer be relied upon. As recommended by COPE's guidelines, we have therefore decided to retract the article. We have attempted to contact the authors for comment but have been unsuccessful in our efforts. REFERENCE Wang, P., Su, C., Li, R., Wang, H., Ren, Y., Sun, H., … Jiang, S. (2014). Mechanisms and effects of curcumin on spatial learning and memory improvement in APPswe/PS1dE9 mice. Journal of Neuroscience Research, 92, 218-231. https://doi.org/10.1002/jnr.23322.