Archive for the ‘sweden retractions’ Category
After a series of documentaries prompted his former employer, Karolinska Institutet (KI), to reopen a misconduct investigation against him, KI has today released one verdict regarding a 2014 Nature Communications paper: guilty.
KI said it is contacting the journal to request a retraction of the paper, which has already been flagged with an expression of concern.
Here’s more from a release from the institution: Read the rest of this entry »
The move comes after a group of researchers alleged the paper contains missing data, and the authors followed a problematic methodology. In September, however, the co-authors’ institution, Uppsala University in Sweden, concluded there wasn’t enough evidence to launch a misconduct investigation.
Nature Communications has issued an expression of concern for a 2014 paper by beleaguered surgeon Paolo Macchiarini, citing concerns over whether the paper accurately reports the experiments that were carried out.
According to the notice, Macchiarini, a former rising star in the field of transplant medicine, agrees with the expression of concern. Three of his 22 co-authors have objected.
“Experimental orthotopic transplantation of a tissue-engineered oesophagus in rats” describes transplanting an esophagus into rats that was seeded with their own stem cells, and notes that all animals survived the study period (14 days), and gained more weight than rats given a placebo operation. It’s a topic Macchiarini has made famous, as the first surgeon to perform a similar procedure with a human tracheal transplant. But he’s faced charges of misconduct in the last few years, resulting in his dismissal from Karolinska Institutet (KI).
An expert group at Uppsala University has recommended not proceeding with a full investigation into allegations of misconduct in a high-profile Science paper showing how human pollution may be harming fish.
The June paper — which caught the media’s attention for suggesting fish larvae are eating small particles of plastic rather than their natural prey — became the focus of scrutiny soon after it was published when a group of researchers raised allegations of misconduct. Earlier this year, Science told us it was considering issuing an Expression of Concern (EOC) for the paper, and Uppsala said it was conducting an inquiry, the first step in determining whether to launch a formal investigation.
The expert group who conducted the preliminary investigation has ultimately recommended against an investigation of the paper, according to an Uppsala spokesperson: Read the rest of this entry »
Paolo Macchiarini — once a world-renowned surgeon for creating tracheas from cadavers and patients’ own stem cells – has been dogged for years by accusations of misconduct. Officials at his institution, Karolinska Institute, initially cleared him of many charges, but that all changed earlier this year, when Swedish Television (SVT) aired a series of documentaries about Macchiarini and his work. The series alleged, in part, that he operated on patients in Russia whose conditions were not life-threatening enough to warrant such a risky procedure. Such serious accusations caused a media storm, and prompted officials to take a second look at Macchiarini’s work. KI dismissed Macchiarini, and many others have resigned, including KI’s vice chancellor. Recently, two new reports critiqued KI’s role in the case, and Sweden’s Central Ethical Review Board found Macchiarini guilty of misconduct in a 2014 paper. We spoke with SVT producers Bosse Lindquist and Johannes Hallbom via email about the fallout from their series.
Retraction Watch: Your documentary series has caused quite a storm: A series of resignations and renewed investigations have followed. Are you surprised by the reaction? Read the rest of this entry »
Nearly 50 years ago, researchers in Uppsala, Sweden used cells from a patient to establish a brain tumor cell line that has become widely used. But a new study suggests that the most common source of that cell line used by scientists today may not be derived from that original patient’s tumor, raising questions about the results obtained in hundreds of studies.
In a new paper out today in Science Translational Medicine, Bengt Westermark, of Uppsala University, and colleagues describe what they found when they performed a forensic DNA analysis comparing the widely used version of the cell line to the original. The findings are consistent with those of other analyses in which cell lines turn out not to be what researchers thought, a problem we’ve focused some attention on.
Here’s an email interview with Westermark about the findings and their implications: Read the rest of this entry »
Science is considering adding an expression of concern (EOC) to a June paper that caught the media’s attention for showing how human pollution may be harming fish, following allegations of research misconduct.
A group of researchers allege the paper — which suggested fish larvae are eating small particles of plastic rather than their natural prey — contains missing data and used a problematic methodology. After the researchers submitted a formal letter (available here), Uppsala University in Sweden is now conducting an inquiry, the first step in determining whether to launch a formal investigation.
A spokesperson from Science told Retraction Watch that once the journal independently verifies that an investigation is underway, it will issue an EOC for the paper: Read the rest of this entry »
So from time to time we’ll compile a list of retractions that appeared relatively straightforward, just for record-keeping purposes.
Often, these seemingly straightforward retractions involve duplications, in which authors — accidentally or on purpose — republish their own work elsewhere.
Sometimes journals and authors blame this event on “poor communication,” our first example notes:
Last week, a study brought into question years of research conducted using the neuroimaging technique functional magnetic resonance imaging (fMRI). The new paper, published in PNAS, particularly raised eyebrows for suggesting that the rates of false positives in studies using fMRI could be up to 70%, which may affect many of the approximately 40,000 studies in academic literature that have so far used the technique. We spoke to the Anders Eklund, from Linköping University in Sweden, who was the first author of the study. Read the rest of this entry »
When a researcher discovered one of the images in her papers was a duplication, she asked the journal to fix it — but the journal decided to retract the paper entirely.
The researcher, Suchitra Sumitran-Holgersson, is currently being investigated by the University of Gothenburg in Sweden after a number of her papers were questioned on PubPeer. She told us the duplication was the result of ‘‘genuine human error.’’ Tissue Engineering Part A, however, decided the request to swap the image was a ‘‘cause for concern,’’ and chose to retract the paper.
Here’s the retraction notice: