We’ve been following the case of Kenji Okajima, a professor at Nagoya City University in Japan who was suspended for six months following an investigation into work in his lab. Bits of the story — including at least one other university investigation, and scrutiny of Okajima’s colleagues, one of whom was fired — have been dribbling out for almost two years since a retraction notice in the Journal of Neuroscience.
We have an update in the case of two Japanese scientists who first came to our attention when they retracted a 13-year-old paper in the Journal of Neuroscience last year. Shortly after that, we learned, thanks to a report in Sankei Shimbun and a helpful Retraction Watch reader, that some 17 papers were being investigated.
It now appears that 19 papers by the two researchers, Kenji Okajima and Naoki Harada, ended up under scrutiny.
We have updates on the two mysterious Journal of Neuroscience retractions we reported on yesterday. One is that we have learned that there is a university investigation into the work of one of the teams that retracted one of the studies. More on that in a bit.