Retraction Watch

Tracking retractions as a window into the scientific process

Archive for the ‘japan retractions’ Category

University of Tokyo opens investigation into retracted stem cell paper

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KCCY_15_22_COVER.inddThe University of Tokyo is investigating a 2011 stem cell paper in Cell Cycle, recently retracted over irregularities in four figures.

The university has confirmed there is an investigation, but would not specify which paper it concerned; the corresponding author on the paper, however, confirmed to us that it is the focus of the investigation.

In the retraction notice, published Nov. 1, the journal wrote: Read the rest of this entry »

Oops — Springer journals retract three articles published by accident

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springerJournals published by Springer have retracted three articles in different disciplines, noting in all instances the articles were published by mistake.

A Springer spokesperson told us all three papers were pulled as a result of “human error.” In two instances, the notices say the editors-in-chief never meant to accept the papers, since the recommendation was to reject. 

We’ll start with the retraction that has the most interesting explanation. Here’s the notice: Read the rest of this entry »

Analysis casts doubt on bone researcher’s body of work

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19-coverA new analysis of more than 30 clinical trials co-authored by a bone researcher based in Japan is casting doubt on the legitimacy of the findings.

Yoshihiro Sato, based at Mitate Hospital, has already retracted 12 papers, for reasons ranging from data problems, to including co-authors without their consent, to self-plagiarism. Most of these retracted papers are included in the analysis in the journal Neurology, which concluded that Sato’s 33 randomized clinical trials exhibited patterns that suggest systematic problems with the results.

Other researchers have used similar approaches to analyze a researcher’s body of work — notably, when John Carlisle applied statistical tools to uncover problems in the research of notorious fraudster Yoshitaka Fujii, and Uri Simonsohn, who sniffed out problems with the work of social psychologist  Dirk Smeesters.

Author Mark Bolland of the University of Auckland told us he was surprised by his findings: Read the rest of this entry »

Written by Alison McCook

November 9th, 2016 at 4:00 pm

Genetics study flagged for reliability issues by Frontiers journal

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frontiers-in-geneticsA genetics journal has issued an expression of concern (EOC) for a study after an investigation by its chief editors.

According to the notice in Frontiers in Genetics, the authors of the paper — based at Hokkaido University in Sapporo, Japan — are conducting further experiments to resolve the issues raised by the journal’s investigation.

In February, the same paper received a corrigendum due to errors in the assembly of one of the figures.

Here’s the EOC, issued earlier this week: Read the rest of this entry »

Second paper about major blood pressure drug trial in Japan to be retracted

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hr_cimageA second paper about a major randomized trial in Japanese patients with heart disease is being retracted, after an investigation reportedly found multiple problems with the paper.

As predicted by Pharma JapanHypertension Research is retracting a 2011 paper, already the subject of two errata. Although a spokesperson said she couldn’t say why the paper was being retracted, as the notice was still in production, editor Toshihiko Ishimitsu told us: Read the rest of this entry »

Two more retractions bring bone researcher’s total to 12

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jbmrA bone researcher based in Japan with 10 retractions under his belt has retracted two more papers for similar reasons — problems with the underlying data, and including co-authors who didn’t participate in the project.

In both notices, Yoshihiro Sato is pegged as responsible for the content of the papers. The newly retracted research covers a long timespan — one paper was published in 2000, the other in 2013.

Here’s the first notice, issued by the Journal of Bone and Mineral ResearchRead the rest of this entry »

Anesthesia journal pulls study lacking patient consent

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Journal of AnesthesiaAn anesthesia journal has retracted a paper after an author admitted that the study did not obtain appropriate consent from patients receiving a neuromuscular block in muscles on the face and hands. 

The first author, Yuhji Saitoh, has the same name as a co-author of Yoshitaka Fujii, the all-time record holder with 183 retractions listed on our leaderboard. Thirty-six of those retracted papers include a co-author with the name of Yuhji Saitoh, but we were unable to confirm this is the same person listed on the newly retracted paper.  

Here’s the retraction notice, issued by the Journal of Anesthesia on August 11: Read the rest of this entry »

More than half of plant toxicity paper isn’t original, journal says

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Plagiarism and duplication can be deadly to a paper in any dose. In the case of a study on the toxicity of nanoparticles to plants, the publisher has presented the precise amount of plagiarism and duplications that ultimately felled the paper.

Specifically, according to Nanomaterials, 56% of Potential Impact of Multi-Walled Carbon Nanotubes Exposure to the Seedling Stage of Selected Plant Species” was taken from other work.

Here are more details from the retraction notice, published last year:

Read the rest of this entry »

Written by Shannon Palus

August 9th, 2016 at 11:30 am

Four more retractions for biomaterials researcher brings total to 7

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Journal of Controlled ReleaseA biomaterials researcher has lost four more papers for figure-related issues such as duplications, bringing his total to seven retractions.

We previously reported on three retractions two by the Journal of Controlled Release (JCR) of papers co-authored by Hossein Hosseinkhani, who is currently based at the National Taiwan University of Science and Technology in Taipei. Now, the JCR is pulling four more studies that list Hosseinkhani as a co-author.

Here’s the retraction notice for “Enhanced expression of plasmid dna – cationized gelatin complex by ultrasound in murine muscle:” Read the rest of this entry »

“Great shock and sadness:” Publishing gadfly to retract paper for duplication

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untitledA vociferous advocate for correcting the literature — who has been banned by two publishers for his persistent communications — has asked journals to retract one paper and correct three others for duplications.

After a reader flagged his 2004 paper on PubPeer last month, author Jaime Teixeira da Silva “immediately” contacted the journal to alert it that the paper had been duplicated, as he noted on a recent comment on our site:

Read the rest of this entry »