Category: image manipulation

Cancer researcher in Germany loses multiple papers after misconduct finding

A pathology journal is retracting two papers after an investigation at the last author’s institution in Germany found evidence of scientific misconduct.

The notice for both papers cites an investigation involving Regine Schneider-Stock, who studies cancer biology at the Friedrich Alexander-University Erlangen-Nuremberg (FAU). Meanwhile, another 2005 paper that lists Schneider-Stock as the first author was retracted in October, noting evidence of image manipulation.

The most recent retractions, from the American Journal of Pathology, note that FAU declined to provide the journal with details of its investigation beyond a prepared statement:

Continue reading Cancer researcher in Germany loses multiple papers after misconduct finding

EMBO journals retract figures in two papers missing source data

Journals published by the European Molecular Biology Organization (EMBO) have retracted a handful of figures in two papers with the same last and first authors.

After some figures in the 2005 and 2007 papers were flagged on PubPeer and the authors couldn’t provide the original data, the journals decided to retract parts of the papers, since other data supported the remaining conclusions, according to the Head of Scientific Publications at EMBO.

The partial retractions are labeled as corrigenda by the journals. Earlier this year, the U.S. National Library of Medicine (NLM) announced it would be classifying partial retractions as errata, noting they had been used so rarely by journals.

Both lengthy corrigenda (also reported by Leonid Schneider) contain statements from the authors and the editors. The statements from the authors provide detailed explanations about the problems with the figures in question; here’s an excerpt from the editor’s statement in The EMBO Journal corrigendum: Continue reading EMBO journals retract figures in two papers missing source data

Researcher logs three retractions for image duplications — two of which with familiar co-authors

A researcher in Brazil is taking responsibility for accidentally mixing up images in three papers in the Journal of Biological Chemistry. 

The corresponding author on the three papers told us the mistake happened because the studies were conducted simultaneously, and relied on one computer.

There’s a side note to these retractions: The co-author list on two papers includes names that should be fairly well-known to our readers — Mario Saad, the researcher who unsuccessfully sued the American Diabetes Association to stop retractions of his papers, and Rui Curi, a researcher whose legal threats assisted in the shutdown of Science-Fraud.org. This makes Saad’s ninth retraction.

According to the retraction notices, Lício Velloso  — who, like his co-authors, is based at the University of Campinas in São Paulo, Brazil — assembled all the figures. He told Retraction Watch that the authors initially wanted to correct the papers, adding: Continue reading Researcher logs three retractions for image duplications — two of which with familiar co-authors

Journal cleans the house by retracting 6 cancer papers for plagiarism

Following an investigation, a genetics journal has pulled six cancer papers published this year for plagiarizing from other sources.

According to an excerpt from the retraction notice in Genetics and Molecular Research, the journal has “strong reason to believe that the peer review process was [a] failure,” and has alerted the authors’ institutions.

The notice announcing the retraction of all six papers begins: Continue reading Journal cleans the house by retracting 6 cancer papers for plagiarism

Journal issues three notices for plant biologist, two citing manipulation

Researchers have retracted a paper from a plant journal after a probe found problems with several figures.

According to the new retraction notice in The Plant Cell, some figures in the paper were manipulated, as well as “inappropriately duplicated and reused from a previous publication.” The authors assert that they believe the conclusions remain valid.

The journal has also issued two corrections that include some of the same authors — including one that cites inappropriate image manipulation.

Here’s the retraction notice, issued last month: Continue reading Journal issues three notices for plant biologist, two citing manipulation

Researchers retract two well-cited papers for misconduct

A scientist in Germany has lost two papers that were collectively cited more than 500 times, after an investigation at her former university found her guilty of scientific misconduct.

The probe into Tina Wenz by the University of Cologne in Germany, her former employer, recommended that six of her papers — which have induced some chatter on PubPeer — should be retracted. One of these papers was pulled by Cell Metabolism last year. Now, Cell Metabolism has pulled another of Wenz’s papers, and she has also lost another study published in the Proceedings of the National Academy of Sciences (PNAS), which was previously corrected. 

First, here’s the PNAS retraction notice, issued today: Continue reading Researchers retract two well-cited papers for misconduct

High-profile Science paper retracted for misconduct

Science has retracted a high-profile immunology paper after a probe concluded the corresponding author had committed misconduct.

The paper — which initially caught media attention for suggesting a protein could help boost the immune system’s ability to fight off tumors — has been under a cloud of suspicion since last year, when the journal tagged it with an expression of concern, citing a university investigation.

That investigation — at Imperial College London — has concluded that the paper contained problematic figures that were the result of research misconduct. All were prepared by last and corresponding author Philip Ashton-Rickardt, who took full responsibility. Even though the paper was published in 2015, some original blots and accompanying details have disappeared.

Today, the journal released a retraction notice: Continue reading High-profile Science paper retracted for misconduct

UCLA lab pulls two papers — one by author who admitted to misconduct

A lab at the University of California, Los Angeles has retracted two papers for duplicated images.

These retractions — in the Journal of Immunology — represent the second and third retractions for the lab head; he lost another paper after one of his former students confessed to manipulating images.

Although Eriko Suzuki admitted to her actions on PubPeer in 2014, the 2007 Oncogene paper wasn’t retracted until June, 2016, when the journal issued a notice citing “data irregularities.”

Unfortunately, Suzuki’s admission in 2014 wasn’t the end of the troubles for lab head Benjamin Bonavida, who recently issued two additional retractions in the Journal of Immunology, only one of which includes Suzuki as a co-author.

Bonavida told us the university received allegations (he’s not sure from who) that some of the control gels were duplicated; he didn’t agree, but couldn’t produce the original gels to disprove it. We asked if any more retractions were coming from Bonavida, who has since retired from running a lab:

Continue reading UCLA lab pulls two papers — one by author who admitted to misconduct

Diabetes researcher loses prestigious professorship

The German Research Foundation (DFG) has announced today that it is withdrawing a professorship it awarded leading diabetes researcher Kathrin Maedler in 2014.

In recent years, Maedler — based at the University of Bremen in Germany — has faced questions about her work, including allegations of duplication and image manipulation. So far, she has issued one retraction, two expressions of concern, and multiple corrections. After an investigation, the University of Bremen concluded last month that Maedler’s work contained several duplications that were the result of negligence, noting there is not enough evidence to support charges of scientific misconduct.

But this hasn’t stopped the DFG from revoking the prestigious Heisenberg professorship it awarded Maedler in 2014. A Google-translated version of statement released by the DFG (in German) today concludes that Maedler did, in fact, commit misconduct, as she

Continue reading Diabetes researcher loses prestigious professorship

Sleuthing out scientific fraud, pixel by pixel

lars-koppers
Lars Koppers

When it comes to detecting image manipulation, the more tools you have at your disposal, the better. In a recent issue of Science and Engineering Ethics, Lars Koppers at TU Dortmund University in Germany and his colleagues present a new way to scan images. Specifically, they created an open-source software that compares pixels within or between images, looking for similarities, which can signify portions of an image has been duplicated or deleted. Koppers spoke with us about the program described in “Towards a Systematic Screening Tool for Quality Assurance and Semiautomatic Fraud Detection for Images in the Life Sciences,” and how it can be used by others to sleuth out fraud.

Retraction Watch: Can you briefly describe how your screening system works?

Continue reading Sleuthing out scientific fraud, pixel by pixel