Category: data issues

Images “may not be trustworthy”: Aluminum sheets paper folds into retraction

1-s2.0-S0921509315X00153-cov150hFollowing questions “about the integrity of the microscopy images,” Materials Science and Engineering: A has retracted a paper on the properties of sheets of aluminum under strain.

The images in question show sheets after a few rounds of a process called “constrained groove pressing,” which smushes sheets between two grooved plates, and then between two flat plates, to evaluate how the material holds up.

According to the retraction note for the paper, imaging performed by a third party “may not be trustworthy.”

The paper has been cited 42 times, according to Thomson Scientific’s Web of Knowledge.

Here’s more from the retraction note to “Nano-structure and mechanical properties of 0–7 strained aluminum by CGP: XRD, TEM and tensile test“:

Continue reading Images “may not be trustworthy”: Aluminum sheets paper folds into retraction

Voinnet notches second retraction, two more corrections

PNASOlivier Voinnet — a plant researcher who was recently suspended for two years from the Centre national de la recherche scientifique (CNRS) after an investigation by ETH Zurich and CNRS found evidence of misconduct — has issued his second retraction and two more corrections.

PNAS posted the retraction earlier this week for a 2006 article after an inspection of the raw data revealed “errors” in study images. Authors confirmed the issues in some figures and revealed “additional mounting mistakes” in others.

Voinnet has promised to issue retractions and corrections for every study that requires them. These latest notices bring our tally up to nine corrections, two retractions and one Expression of Concern.

Continue reading Voinnet notches second retraction, two more corrections

UPitt investigation brings total retraction count to four for pair of cancer researchers

Journal of Biological Chemistry1An official inquiry by the University of Pittsburgh has led to two more retractions for a pair of cancer researchers, Tong Wu and Chang Han. By our count, the pair now have four retractions under their belt, all the result of the university investigation.

The Journal of Biological Chemistry published the notices earlier this month, after it was discovered the papers contained cropped panels, among other issues. Importantly, the two papers appear to even have shared some data.

One 2006 paper, “Modulation of Stat3 Activation by the Cytosolic Phospholipase A2α and Cyclooxygenase-2-controlled Prostaglandin E2 Signaling Pathway,” investigated the molecular actors in cancer growth, such as overexpression of cyclooxygenase-2 (COX-2). It has been cited 34 times, according to Thomson Scientific’s Web of Knowledge. Here’s the notice:

Continue reading UPitt investigation brings total retraction count to four for pair of cancer researchers

Data “mismatch” and author’s illness pluck bird sex-ratio study from literature

coverInaccessible data and an author’s illness are to blame for the retraction of a paper on sex ratios of baby finches, according to the authors.

The paper, “Experimental evidence that maternal corticosterone controls adaptive offspring sex ratios,” published in Functional Ecology, outlined how a hormone in mother finches can “skew” the number of males vs females that hatch from the eggs in her nest.

But after questions about the data were raised, the authors were unable to address the “mismatch” between the experimental data and those that were published. Compounding the situation is the fact that, while working on the paper, first author Sarah Pryke at the Australian National University “was suffering from a medical condition that likely impaired her cognitive abilities,” according to a statement from Pryke’s co-authors.

An email to Pryke was met with an out-of-office reply:

Continue reading Data “mismatch” and author’s illness pluck bird sex-ratio study from literature

Second correx for controversial paper on the financial benefits of climate change

Journal of Economic PerspectivesThe Journal of Economic Perspectives has published a second correction for a 2009 paper that argued that some amount of global warming could lead to economic gains.

The author of “The Economic Effects of Climate Change,” Richard Tol, a professor of economics at the University of Sussex, blamed earlier problems with the paper on “gremlins.” In a notice posted last year, Tol wrote that “minus signs were dropped”; he also added a pair of “overlooked estimates” and several recently published studies.

After the first correction was published, several people contacted the JEP to point out more issues with the paper. Editors worked with Tol and outside researchers to update the paper again.

Here’s some text from the newest correction notice:

Continue reading Second correx for controversial paper on the financial benefits of climate change

Duke lung researcher up to seven retractions

Enviromental Health Perspectives

More journals have pulled papers co-authored by researchers Erin Potts-Kant and Michael Foster, at Duke University, bringing the total up to seven for Potts-Kant and six for Foster.

Authors were unable to replicate the experiments after “concerns about the initial data from the animal physiology laboratory” led them to reanalyze source data, according to the note in Environmental Health Perspectives. The comparison showed “potential inconsistencies in the data,” which “significantly impact the overall conclusions of the manuscript.” Similar issues appear to have felled the pair’s other papers, including the other two recent retractions in the American Journal of Respiratory and Critical Care Medicine and the American Journal of Physiology – Lung Cellular and Molecular Physiology — but in the latter case, the discrepancies don’t affect the conclusion.

Potts-Kant was arrested on embezzlement charges in 2013. Authorities alleged that she stole almost $15,000 from Duke University.

Environmental Health Perspectives posted a retraction in July, for a 2012 paper that looked at the molecular underpinnings in airways that react to ozone.

Here’s the full notice:

Continue reading Duke lung researcher up to seven retractions

“To our horror”: Widely reported study suggesting divorce is more likely when wives fall ill gets axed

home_coverA widely reported finding that the risk of divorce increases when wives fall ill — but not when men do — is invalid, thanks to a short string of mistaken coding that negates the original conclusions, published in the March issue of the Journal of Health and Social Behavior.

The paper, “In Sickness and in Health? Physical Illness as a Risk Factor for Marital Dissolution in Later Life,” garnered coverage in many news outlets, including The Washington Post, New York magazine’s The Science of Us blog, The Huffington Post, and the UK’s Daily Mail . 

But an error in a single line of the coding that analyzed the data means the conclusions in the paper — and all the news stories about those conclusions — are “more nuanced,” according to first author Amelia Karraker, an assistant professor at Iowa State University.

Karraker — who seems to be handling the case quickly and responsibly —  emailed us how she realized the error:

Continue reading “To our horror”: Widely reported study suggesting divorce is more likely when wives fall ill gets axed

Gynecologic cancer researcher up to 13 retractions

13277Noriyuki Takai, a gynecologic cancer researcher at Oita University in Japan, has lost another five papers. With a new total of 13, that means he’s now on our leaderboard.

Three of the retractions are from the journal Tumor Biology, one is from the International Journal of Gynecological Cancer, and one from Anticancer Research.

Takai is the first author on all 5 papers.

As has been the case with Takai’s retractions, and there’s evidence that all were felled by issues with figures. In all, according to the retraction notices, “original data were processed inappropriately.” Four end with the following sentence (or some close variation thereof):

Continue reading Gynecologic cancer researcher up to 13 retractions

Gut paper retracted after university review says “figures cannot be validated by original data”

IBDA biologist at Case Western Reserve University School of Medicine in Ohio has retracted a paper from Inflammatory Bowel Diseases after a university review found the figures within it could not be “validated by original data.”

The 2010 paper, “Elevated IL-13Rα2 in intestinal epithelial cells from ulcerative colitis or colorectal cancer initiates MAPK pathway,” concerns the elevated expression and role of an inflammatory protein in colon cancer cells.

According to the notice, corresponding author and biologist Alan Levine — who recently received a $3.9 million Avant-Garde Award for HIV/AIDS Research from the National Institute on Drug Abuse — requested the retraction.

Here’s the full notice: Continue reading Gut paper retracted after university review says “figures cannot be validated by original data”

Two crystallography papers break apart for “trivial errors,” says author

ACBiophysicists in India have retracted two crystallography papers describing protein binding sites following “concerns,” according to one retraction note.

The last author on both papers, however, told us he believed the retractions were the result of “trivial errors.” Although one journal praised him in its retraction note for his “positive engagement,” he said the process left him feeling “disgusted.”

One paper, “Structural Studies on Molecular Interactions between Camel Peptidoglycan Recognition Protein, CPGRP-S, and Peptidoglycan Moieties N-Acetylglucosamine and N-Acetylmuramic Acid,” was withdrawn from the Journal of Biological Chemistry in August 2014.

The second, “Mode of binding of the antithyroid drug propylthiouracil to mammalian haem peroxidases,” was retracted from Acta Crystallographica Section F this month. Here’s the retraction notice: Continue reading Two crystallography papers break apart for “trivial errors,” says author