image manipulation – Page 23

Two journals retracting papers from University of Malaya featuring widely criticized figures

The image that excited twitter: Figure 6 from the Scientific Reports paper — The image that excited Twitter

One journal has retracted a paper containing images that recently raised suspicions of obvious duplications, and another journal is planning to do the same.

Scientists first leveled accusations against the newly retracted paper in Scientific Reports, along with two others by the same researchers, earlier this month on Twitter. One other journal — PeerJ — has announced that it plans to retract one of the questioned papers, as well. The third paper, in Frontiers in Pharmacology, bears an expression of concern.

It was unusually quick action on the part of the journals, as well as the authors’ host institution, the University of Malaya, which announced last week the authors had manipulated figures in all three papers, along with one other.

Here’s today’s retraction notice from Scientific Reports for “Novel piperazine core compound induces death in human liver cancer cells: possible pharmacological properties:”

Continue reading Two journals retracting papers from University of Malaya featuring widely criticized figures

Highly cited cancer researcher logs 8th, 9th retractions

Bharat Aggarwal, a highly cited cancer researcher who retired last year from MD Anderson, has logged two retractions following an investigation into his work, bringing his total to nine.

Aggarwal has threatened to sue us in the past, and told us that MD Anderson has been investigating his work. Earlier this year, Biochemical Pharmacology retracted seven studies of which he is the only common author, noting the “data integrity has become questionable.” Now, he’s earned two more retractions in Molecular Pharmacology, both for “inappropriate” or “unacceptable” image manipulation.

Both of the notices are paywalled (tsk, tsk). Here’s one for “Flavopiridol suppresses tumor necrosis factor-induced activation of activator protein-1, c-Jun N-terminal kinase, p38 mitogen-activated protein kinase (MAPK), p44/p42 MAPK, and Akt, inhibits expression of antiapoptotic gene products, and enhances apoptosis through cytochrome c release and caspase activation in human myeloid cells:” Continue reading Highly cited cancer researcher logs 8th, 9th retractions

Seventh retraction appears for cancer researcher who sued PubPeer commenters

Fazlul Sarkar, who sued PubPeer commenters for criticizing his work, has logged two more retractions, bringing his total to seven.

The two retractions appear in the Journal of Cellular Physiology, and follow five others released last week by another Wiley journal, Journal of Cellular Biochemistry. All notices mention an investigation at Wayne State University, where Sarkar is on the faculty.

Here’s the notice for “Activated K-Ras and INK4a/Arf Deficiency Promote Aggressiveness of Pancreatic Cancer by Induction of EMT Consistent With Cancer Stem Cell Phenotype:” Continue reading Seventh retraction appears for cancer researcher who sued PubPeer commenters

Researcher suing PubPeer commenters earns 5 retractions following investigation

An investigation at Wayne State University has prompted five retractions for a scientist who is suing PubPeer commenters after they criticized his work on the site.

The investigation into Fazlul Sarkar and his co-authors found that the papers contain images that were “inappropriately manipulated” or “inappropriately re-used and re-labeled.” All five retraction notices are from the Journal of Cellular Biochemistry.

Here’s the retraction notice for “Concurrent inhibition of NF-κB, cyclooxygenase-2, and epidermal growth factor receptor leads to greater anti-tumor activity in pancreatic cancer:

Continue reading Researcher suing PubPeer commenters earns 5 retractions following investigation

Leiden requests two retractions over misconduct

The Leiden University Medical Center (LUMC) has asked a journal to retract two papers after revealing a former employee manipulated data.

The report does not name the individual nor the journal, but notes that they work in a molecular field, and are currently employed by a university outside The Netherlands.

According to a news release about the report: Continue reading Leiden requests two retractions over misconduct

Figures questioned online were manipulated, says Malaysia investigation

Many figures in four papers by a research team in Malaysia contain duplication or manipulation, a university committee has found, calling for multiple retractions.

We learned about issues with three of the papers, including one in Scientific Reports, earlier this week when they were the talk of Twitter. As journals issued expressions of concern, and an expert wondered how the papers passed peer review at all, the first author, a researcher at the University of Malaya (UM), denied allegations of duplication.

UM was alerted to allegations of misconduct in the Scientific Reports paper last Saturday, and according to a statement published today:

Continue reading Figures questioned online were manipulated, says Malaysia investigation

Images that raised eyebrows flagged by another journal; Malaysian gov’t investigates

Multiple investigations have been launched into allegations of blatant duplications by a research group in Malaysia.

Last week, users alleged on Twitter that three papers by the same team included pictures of cells that were copied and pasted. First author Nima Samie, affiliated with University of Malaya in Malaysia, denied the accusations — but both the Malaysian government and now two journals sees cause for further investigation.

Frontiers in Pharmacology published an expression of concern this morning:

Continue reading Images that raised eyebrows flagged by another journal; Malaysian gov’t investigates

Researcher accused of fraud, embezzlement acquitted by Italian court

An Italian court has acquitted a gastroenterologist who was accused of fraud and embezzlement.

An earlier institutional investigation into Stefano Fiorucci, based at the University of Perugia in Italy, found that he had manipulated images in publications that he allegedly used to win two million Euros of funding. The story, which has dragged on for years, has resulted in four retractions and nine expressions of concern for publications authored by Fiorucci.

Fiorucci’s lawyer, Stefano Bagianti, told us: Continue reading Researcher accused of fraud, embezzlement acquitted by Italian court

Authors reused images in three papers, concludes journal probe

Biologists are retracting three papers after the journal concluded they contain reused images, designed to represent different experiments. The authors stand by the conclusions, some of which they say have been “extensively validated.”

The Journal of Biological Chemistry used image analysis software to evaluate the images, first published at least a decade ago. Unfortunately, the raw data behind the problematic images were not available. The authors have also corrected a fourth paper in another journal, and wrote on PubPeer that they are working with journals to address concerns in three more.

The papers share two authors: Mireia Duñach at the Autonomous University of Barcelona, and Antonio García de Herreros at the Institut Hospital del Mar d’Investigacions Mèdiques. A representative of the Institut Hospital del Mar d’Investigacions Mèdiques told us it is looking into Garcia de Herreros’s work.

We’ll start with “β-Catenin N- and C-terminal tails modulate the coordinated binding of adherens junction proteins to β-catenin,” which has been cited 45 times since it was published in 2002, according to Thomson Reuters Web of Science. The retraction notice says:

Continue reading Authors reused images in three papers, concludes journal probe