Retraction

Retraction: The following article from British Journal of Pharmacology, ‘Exendin-4 reverts behavioural and neurochemical dysfunction in a pre-motor rodent model of Parkinson's disease with noradrenergic deficit’ by N Rampersaud, A Harkavyi, G Giordano, R Lever, J Whitton and PS Whitton, published online on 10 July 2012 in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between the authors, the journal Editor in Chief, Prof. J.C. McGrath and John Wiley & Sons Ltd. The retraction has been agreed due to the article showing apparently considerable overlap with a paper published in 2012 in Neuropeptides, 46(5):183–193 (DOI: 10.1016/j.npep.2012.07.004) entitled ‘Exendin-4 reverses biochemical and behavioral deficits in a pre-motor rodent model of Parkinson's disease with combined noradrenergic and serotonergic lesions’ by the same authors. The overlapping articles were submitted to each journal one day apart and neither paper cited the other. It was not possible to identify this overlap at the time of article review and acceptance. One of the conditions of submission of a manuscript to British Journal of Pharmacology is that it is not under consideration for publication elsewhere. As such this instance represents an infringement of the journal policy and the authors have therefore agreed to retract the article. The authors apologise for the unfortunate errors which lead to the submission of both papers at once and, having retracted both papers in recognition of this breach of accepted scholarly publication ethics, intend to prepare a single new paper to present the underlying work, the scientific validity of which has not been questioned.