Search Results for: "stem cells"

Meet the filmmakers who cracked open the case against star surgeon Macchiarini

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 … Continue reading Meet the filmmakers who cracked open the case against star surgeon Macchiarini

Plagiarism, plagiarism, plagiarism: Five recent cases

There’s so much publishing news to report, we don’t always get to cover every retraction when it appears. To get the word out more quickly, sometimes we publish a group of papers pulled for similar reasons, such as duplications. Below, we present five recent cases of plagiarism, such as using text or figures that the … Continue reading Plagiarism, plagiarism, plagiarism: Five recent cases

Biologist under investigation asks journal to swap image, journal retracts the paper

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 … Continue reading Biologist under investigation asks journal to swap image, journal retracts the paper

Macchiarini did not obtain necessary ethics approvals, says Swedish Research Council

Surgeon Paolo Macchiarini did not apply for the necessary ethics approval to perform the pioneering transplants he’s known for, according to the Swedish Research Council. Chief Legal Counsel Anna Hörnlund, who wrote a letter in this week’s The Lancet, says Macchiarini’s work needed to obtain ethical approval from one of six regional ethical review boards, as required by … Continue reading Macchiarini did not obtain necessary ethics approvals, says Swedish Research Council

Lancet issues expression of concern for 2011 Macchiarini paper

The Lancet has tagged an expression of concern onto a seminal 2011 paper by Paolo Macchiarini, the Italian surgeon whose work and conduct outside the operating room has earned months of  heavy criticism that recently culminated in his dismissal from the Karolinska Institutet. “Tracheobronchial transplantation with a stem-cell-seeded bioartificial nanocomposite: a proof-of-concept study,” which described the first … Continue reading Lancet issues expression of concern for 2011 Macchiarini paper

Biologist’s research under investigation in Sweden after being questioned on PubPeer

The University of Gothenburg in Sweden is investigating several papers co-authored by biologist Suchitra Sumitran-Holgersson after they were challenged on PubPeer. Sumitran-Holgersson already has one retraction under her belt — of a 2005 Blood paper, after another investigation concluded the results “cannot be considered reliable.” Sumitran-Holgersson and her husband, co-author Jan Holgersson, did not sign the retraction notice. Both were … Continue reading Biologist’s research under investigation in Sweden after being questioned on PubPeer

Macchiarini dismissed from Karolinska

The Karolinska Institutet has dismissed former rising star surgeon Paolo Macchiarini from his post, effective immediately. A KI news release, dated today, states: The Staff Disciplinary Board at Karolinska Institutet has today decided to relieve Paolo Macchiarini of his duties as a researcher at KI. He is to be informed immediately that his contract has been … Continue reading Macchiarini dismissed from Karolinska

Shigeaki Kato up to 38 retractions

Our retraction notice count for Shigeaki Kato, number seven on our leaderboard, has grown to 38. The former University of Tokyo endocrinologist recently earned another retraction, for a paper in Archives of Biochemistry and Biophysics that contained image manipulation. As we’ve noted before, Kato resigned from the university in 2012 as it investigated his work for misconduct; in 2013 a Japanese newspaper reported that the investigation … Continue reading Shigeaki Kato up to 38 retractions

Whistleblower removed from Macchiarini’s Lancet author list

Last week, The Lancet honored a co-author’s request to remove his name from Paolo Macchiarini’s seminal 2011 paper, which described the first transplant of an artificial trachea seeded with autologous stem cells but has since come under fire. On March 3, the journal posted this notice: The Lancet has been contacted by Dr KH Grinnemo … Continue reading Whistleblower removed from Macchiarini’s Lancet author list