by journal – Retraction Watch

Duke scientists lose eight papers for alleged image manipulation

Eight papers by two emeritus researchers from Duke University have been retracted in recent months for alleged image duplications. Although the researchers had worked at the university for decades, Duke officials have not responded to repeated inquiries about the retractions.

The papers were published between 2004 and 2014 in The Journal of Cellular Biochemistry and PLOS One. According to the retraction statements, the articles contained images and figures that appeared similar or identical to others in the same paper or published elsewhere.

The two researchers, Salvatore Pizzo, a former chair of Duke’s Department of Pathology, and his colleague Uma Kant Misra, spent much of their careers studying prostate cancer. From 1993 to 2015, Pizzo and Misra published 70 papers together, with 26 where they are the only authors. Pizzo did not respond to repeated emails from Retraction Watch asking for comment. Misra died Sept. 18.

Authors defend retracted paper on vitamin D and COVID-19 called ‘deeply bizarre’ by critic

PLOS One has retracted a paper linking vitamin D levels and COVID-19 morbidity three years after a critic flagged the data in the study as “deeply bizarre.” The authors objected to the retraction, with one calling it “outrageous” and pointing to flaws in the published notice.

The article, which appeared in February 2022, claimed people with low levels of vitamin D were at increased risk for severe COVID-19 and were more likely to die of the disease than other patients. It has been cited 65 times, according to Clarivate’s Web of Science.

The paper had a “huge, immediate impact,” said Gideon Meyerowitz-Katz, a senior research fellow from the University of Wollongong in Australia, citing the fact that the paper had been viewed over 1 million times within six weeks of being published. The article joins others, many also flagged by Meyerowitz-Katz, purporting to find links between vitamin D intake and COVID-19 severity that have been retracted or removed.

Study on apple cider vinegar for weight loss retracted after many raise concerns

Easy fixes for complex health problems can be tempting — but they rarely pan out. That seems to be the case for the investigators on one clinical trial who claimed consuming apple cider vinegar caused obese teens and young adults to lose weight.

Their article appeared in March 2024 in BMJ Nutrition, Prevention & Health. The journal is retracting the paper “because the authors’ analyses could not be replicated and multiple errors were identified,” according to the retraction notice.

The retraction, dated September 23, comes more than a year after sleuths pointed out some of these errors and other problems with the analysis.

Why has this microRNA review paper been cited more than 2,000 times?

Earlier this year, Marc Halushka, a pathologist at Cleveland Clinic in Ohio, came across a review titled simply “MicroRNA,” an unusually short title in a big field. Looking deeper into the review, published in the Journal of Allergy and Clinical Immunology in 2018, Halushka found it had been cited more than 2,000 times. He thought this number “shockingly high,” given the article’s brevity and content.

Other, older reviews on microRNA from leaders in the field have been cited far more often, some even tens of thousands of times. But when searching “microRNA” on Google Scholar, the review with that single term as its title is the first result.

Halushka doesn’t think anything in the paper is wrong or out of date. But the citation was among those in a paper he was asked to review that he thought “was clearly a paper mill paper,” he told Retraction Watch. He suspects when people “who know nothing about microRNAs because they are just in the paper mill business” need to cite a review on the topic, they just use the top search result.

Exclusive: Journal bans drug safety database papers as they flood the literature

Starting around 2023, a curious trend took hold in papers on drug safety monitoring. The number of articles published on an individual drug and its link to specific adverse events went from a steady increase to a huge spike.

The data source in most of those articles was largely the same: The FDA Adverse Events Reporting System, or FAERS. In 2021, around 100 studies mining FAERS for drug safety signals were published. In 2024, that number was 600, with more than that already published this year.

Two journals in particular published the bulk of these papers, Frontiers in Pharmacology and Expert Opinion on Drug Safety. In response to the flood, Frontiers started to require independent validation of studies drawing on public datasets. And Expert Opinion on Drug Safety decided in late July to stop accepting submissions altogether that use the FAERS database for this particular type of study.

Embattled journal Cureus halts peer reviewer suggestions

The mega-journal Cureus is eliminating author suggestions for peer reviewers, a prompt that is standard practice at some journals when submitting a manuscript.

According to an email sent August 25 to current and past peer reviewers, the move is “due to the potential conflict of interest” that comes from authors suggesting reviewers who may be mentors and colleagues.

Reviewers recommended by authors are more likely to give positive feedback on papers. And such recommendations gave way to such practices as peer review rings and self-peer review, vulnerabilities that started to thrive more than a decade ago.

Exclusive: Cancer researcher sues MD Anderson over misconduct finding

A biochemist who worked as a postdoc at The University of Texas MD Anderson Cancer Center in Houston has sued the institution to dispute findings of research misconduct.

The researcher, Sonia Melo, now at the University of Porto in Portugal, alleges MD Anderson did not follow its own policies while conducting its investigation. Melo lost a prestigious grant in 2016 after one of her papers was retracted for containing duplicated images.

MD Anderson’s investigation concerned a paper published in Cancer Cell in 2014. On August 7 the journal marked it with a “temporary Expression of Concern” detailing duplicated and relabeled data found in the probe, which was completed in May 2024. The article has been cited 1,462 times, according to Clarivate’s Web of Science.

‘No misconduct here’: Author defends addendum that sleuth says is ‘inadequate’

A 23-year-old paper has received an addendum for “possible inadvertent errors” in the figures. But a sleuth says the update doesn’t address issues with the work.

The 2002 paper, which describes the behavior of Langerhans cells in normal and inflamed skin, was published in Nature Immunology and has been cited 774 times, according to Clarivate’s Web of Science.

The article received a correction in 2003 to replace two “incorrect” figures. Over 20 years later, PubPeer commenter “Archasia belfragei” flagged issues with different figures, noting in December that some PCR bands were “more similar than expected.”

PLOS One slaps four papers with expressions of concern for overlapping control data

Four papers from a team of researchers in Japan have received expressions of concern for overlap in control samples, data, study design and statistical analyses. The publisher of the articles says it has closed its investigation.

The notices were published in PLOS One from July 31 to August 3 to inform readers of “study design concerns” and to provide additional supplementary data. They also cite a pair of related papers in other journals for the same problems, but those articles remain unmarked.

Masaya Oki, a professor of applied chemistry and biotechnology at the University of Fukui in Japan, is the corresponding author on all six papers. Each discusses the effects of a different gene inhibitor on cataracts taken from rat eyes. While the authors used multiple methods to study these effects, the EOCs concern the results obtained using microarrays to compare lens samples.

Hive mindfulness: Sleuths’ advice leads to retraction of paper on social connection

A journal has retracted a 2025 paper on social media and anxiety after a reader raised questions about the data – and thanks to the mentorship of a sleuth or two.

The article appeared in 2023 in BMC Psychology, a Springer Nature title. The sole author was Li Sun, whose affiliation is listed as the School of Marxism at Zhoukou Vocational and Technical College, in China.

According to the abstract of the paper, the research explored “the impact of mindfulness-based mobile apps on university students’ anxiety, loneliness, and well-being.” Those apps were “Headspace, Calm, and Insight Timer” which “offer a range of mindfulness exercises and resources for users to explore.”

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