Retraction Watch

Tracking retractions as a window into the scientific process

Archive for the ‘shigeaki kato’ Category

Tokyo panel calls for retraction of 43 Kato papers

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katoThe University of Tokyo panel investigating the work of a former professor there, Shigeaki Kato, has recommended the retraction of 43 of his group’s articles, according to a report in the Asahi Shimbun newspaper.

If the papers are indeed retracted, Kato, who already has at least five articles subject to an expression of concern and five retractions, would be fifth on the list of most retractions for a single author, by our unofficial tally. His fellow countryman, Yoshitaka Fujii, continues to hold the lead at what appears to be 183, followed by Joachim Boldt (~89), John Darsee (~83), and Diederik Stapel, at 53. [See note at end.]

The Asahi report quotes Kato — who has received some $20 million in government funding for his work  — as acknowledging problems with the data in his studies: Read the rest of this entry »

Written by amarcus41

July 25th, 2013 at 10:21 am

Five Kato papers subject to an expression of concern, plus, a statute of limitations on correcting the literature?

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katoShigeaki Kato, an endocrinology researcher who resigned last year from the University of Tokyo and has retracted five papers, now has five more papers subject to an expression of concern.

Here’s the notice in Molecular and Cellular Biology: Read the rest of this entry »

Shigeaki Kato notches fifth retraction

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Shigeaki Kato

An endocrinologist who resigned from the University of Tokyo last March as the university was investigating his work has retracted another paper.

Here’s the notice for the paper by corresponding author Shigeaki Kato and colleagues in the Journal of Bone and Mineral Research: Read the rest of this entry »

Shikeagi Kato, who resigned post in March, retracts Nature paper

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Shikeagi Kato, an endocrinologist formerly of the University of Tokyo who resigned on March 31 amidst an investigation into his work, has retracted another paper, this one in Nature.

Here’s the notice for “DNA demethylation for hormone-induced transcriptional derepression,” which was the subject of a correction last October: Read the rest of this entry »

Endocrinologist Shigeaki Kato resigns amidst University of Tokyo misconduct investigation

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Shigeaki Kato

Shigeaki Kato, an endocrinology researcher at the University of Tokyo who retracted a paper late last month, has resigned amidst an investigation into whether he committed misconduct, Japanese media outlets are reporting.

According to the reports, the university has been investigating Shigeaki Kato and his group, affiliated with the Institute of Molecular and Cellular Biosciences, for scientific misconduct. The investigation was prompted by an outside whistleblower’s allegations in January about 24 of Kato’s papers. The whistleblower claimed that the papers manipulated and reused data improperly, and created a YouTube video to spread the word, as ScienceInsider reported earlier this year.

One of the 24 papers, Read the rest of this entry »

Written by Ivan Oransky

April 9th, 2012 at 10:48 am

Cell paper, once plagiarized, pulled for dodgy figures

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A while back (last June, to be precise), we wrote about a group of Japanese endocrinologists who found a creative way to up their citation counts using duplicate publication. At the time, the researchers were docked a 2004 paper in the Journal of Steroid Biochemistry & Molecular Biology that had self-plagiarized extensively from a 2003 article in Cell.

Well, skeptics of this new math take heart: The group’s publication total has fallen yet again. Turns out that 2003 paper — which has been cited 160 times, up from 144 when we checked last year, according to Thomson Scientific’s Web of Knowledge — wasn’t quite up to snuff, either.

According to the retraction notice for the article, “The Chromatin-Remodeling Complex WINAC Targets a Nuclear Receptor to Promoters and Is Impaired in Williams Syndrome:” Read the rest of this entry »

The new math: How to up your citations (hint: duplication). Plus a correction for Naoki Mori

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Here’s a good way to increase the number of times your work is cited: Publish studies three times.

On second (or third) thought, maybe not: The Journal of Steroid Biochemistry & Molecular Biology has retracted a pair of articles by three Japanese researchers who apparently liked their own work so much they decided to submit it, and submit it—and submit it again.

Here’s the notice for the first paper, a 2004 publication titled “Vitamin D receptor (VDR) promoter targeting through a novel chromatin remodeling complex,” by Shigeaki Kato, Ryoji Fujiki and Hirochika Kitagawa, fairly well-known molecular endocrinologists at the University of Tokyo: Read the rest of this entry »