The following article from Neural Regeneration Research, ‘Brain-derived neurotrophic factor inhibits glucose intolerance after cerebral ischemia’ by Shu et al., published on Volume 8, Issue 25, Pages 2370-2378 has been retracted by agreement between the authors and the journal. The retraction has been agreed because the figures and corresponding descriptions included in the article is a duplication of the paper by Harada et al. that had already appeared in J Pharmacol Sci, 118, 109-116; 2012.One of the conditions of submission of a paper for publication is that authors declare explicitly that their work is original and has not been submitted for or appeared in a publication elsewhere. As such this article represents a violation of the journal's publishing policies.