Category: clinical study retractions

Diabetes researcher logged 1 retraction, 3 correx, after PubPeer comments

Kathrin Maelder
Kathrin Maedler

A journal has retracted a paper by a leading diabetes researcher — who has also issued three corrections — after questions about her research were raised on PubPeer.

Kathrin Maedler — who works at the University of Bremen in Germany — corrected another paper in 2014. All of the notices are dated from 2015, and all describe issues with figures.

The ongoing comments have led Maedler to carefully look through her original data, according to a statement she emailed us: Continue reading Diabetes researcher logged 1 retraction, 3 correx, after PubPeer comments

Sixth retraction appears for bone researcher due to “extensive self-plagiarism”

cov150hA bone researcher in Japan has logged his sixth retraction, after acknowledging he duplicated substantial portions of a 2011 paper and added “honorary” co-authors.

The retraction, in Parkinsonism & Related Disorders, follows five others for Yoshihiro Sato, including one from JAMA, some of which were pulled over concerns regarding authorship and data integrity. The latest retraction duplicated text from another 2005 paper that was itself retracted last year, both for duplicating from this newly retracted paper and for “concerns about the underlying data.”

Sato — who is listed at Mitate Hospital on the paper — told the journal he takes full responsibility.

Here’s the retraction notice: Continue reading Sixth retraction appears for bone researcher due to “extensive self-plagiarism”

Unwitting co-author requests retraction of melatonin paper

Screen Shot 2016-06-08 at 10.54.58 PMNine years ago, a well-known pharmacologist hosted a researcher from another university in his lab. On a Saturday night last September, he learned while surfing Google Scholar that they had published a paper together.

Marco Cosentino, who works at the University of Insubria in Italy, know that Seema Rai, a zoologist at Guru Ghasidas Vishwavidyalaya in India, had collected data during during her six months in his lab, but had warned her they were too preliminary to publish. She published the data — on melatonin’s role in immunity — anyway, last summer in the Journal of Clinical & Cellular Immunology, listing Cosentino as the second author.

The day after he discovered the paper, Cosentino sent an email to the editor in chief of the journal, Charles Malemud, explaining why he did not approve of the publication:

Continue reading Unwitting co-author requests retraction of melatonin paper

HIV paper pulled for lack of consent, errors

AIDS JournalA researcher failed to obtain proper consent from HIV patients included in his study about risky sexual behavior, according to the journal that retracted his paper.

The study, based on interviews with 154 men and women living with HIV, concluded that experiencing negative life events correlated with risky sexual behavior. But although the author claimed to have complied with the journal’s standard of consent, the journal disagreed, and retracted the paper in 2014 (we think this case is interesting enough to share with you now). What’s more, according to the journal, the paper contains errors that invalidate its conclusions.

Here’s the notice:

Continue reading HIV paper pulled for lack of consent, errors

Authors retract PNAS paper suggesting silk stabilizes vaccines

PNASA PNAS paper that caught the media’s attention for suggesting that adding silk could stabilize vaccines and antibiotics has been pulled after the authors realized there were significant errors in the data analysis. 

According to the notice, the authors agreed to retract the 2012 paper; however, the corresponding author told us the authors did not think a retraction was required as, according to him, the conclusions remained valid.

The paper presented a solution to the long-standing problem that sensitive biological compounds such as vaccines and antibiotics begin to lose their effectiveness outside the recommended temperature range, and naturally biodegrade over time. The degradation process cannot be reversed, and may even speed up during transport or storage under less ideal temperatures.

Here’s the retraction notice: Continue reading Authors retract PNAS paper suggesting silk stabilizes vaccines

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

Journal flags paper over allegations it used competitors’ text, plasmids

MGGA journal has issued an expression of concern (EOC) for a paper on a common crop virus after the authors were accused of using competitors’ unpublished text and plasmids.

Investigations by the journal and the involved institutions — the University of the Witwatersrand in South Africa, where the paper’s authors are based, and North Carolina State University (presumably, where the accusing group is from) — were inconclusive, the notice states.

So the editor flagged “Sequences enhancing cassava mosaic disease symptoms occur in the cassava genome and are associated with South African cassava mosaic virus infection” with an EOC:

Continue reading Journal flags paper over allegations it used competitors’ text, plasmids

Dental paper pulled for “wrong content with serious consequences”

Clinical Oral InvestigationsAn article on how missing teeth affect chewing was — well, pulled — when someone noticed a few errors. The journal later published a corrected version.

The retraction for “Chewing ability in an adult Chinese population” appeared in Clinical Oral Investigations in 2012, but we’re sharing it with you now because the notice contains some remarkable language:

This article has been withdrawn due to wrong content with serious consequences such as danger to people’s health.

Last author Nico H.J. Creugers, who works at Radboud University Medical Center in the Netherlands, told us: 

Continue reading Dental paper pulled for “wrong content with serious consequences”

JAMA authors retract (and replace) paper about moves and kids’ mental health

JAMAJAMA authors have retracted — and replaced — a 2014 paper about the mental health effects of household moves on kids, after they found errors while completing an additional analysis.

The original paper concluded that in “families who moved out of high-poverty neighborhoods, boys experienced an increase and girls a decrease in rates of depression and conduct disorder,” according to a press release issued by the journal along with the paper (which also got some press attention from Reuters). But part of that conclusion is wrong.

The authors write in a notice for “Associations of Housing Mobility Interventions for Children in High-Poverty Neighborhoods With Subsequent Mental Disorders During Adolescence” that:

Continue reading JAMA authors retract (and replace) paper about moves and kids’ mental health

Nutrition researcher loses two more papers after misconduct findings come to light

R K Chandra, self-proclaimed father of nutritional immunology (from www.drrkchandra.com)
R K Chandra, self-proclaimed father of nutritional immunology (from www.drrkchandra.com)

The self-proclaimed “father of nutritional immunology,” Ranjit Kumar Chandra, has lost two more papers following the release of a misconduct investigation report by his former employer, Memorial University of Newfoundland (MUN).

The report was released last year after Chandra lost his libel suit against the Canadian Broadcasting Company (CBC). The newly retracted papers were both published in Nutrition Research. On one, the author is listed as “Amrit Jain,” who is allegedly Chandra, as well.

Here’s the retraction notice for the article by Amrit Jain: 

Continue reading Nutrition researcher loses two more papers after misconduct findings come to light