Heart journal issues expression of concern after fraud report

circulationThe American Heart Association’s journal Circulation has issued an expression of concern for a paper about the molecular underpinnings of arrhythmias that was co-authored by a biomedical engineer who committed fraud on a massive scale.

According to an investigation by the Office of Research Integrity (ORI), former Vanderbilt engineer Igor Dzhura faked nearly 70 images and drastically over-estimated the number of experiments he conducted. He was banned from receiving federal funding for three years.

The fraud has resulted in six retracted papers, Dzhura has agreed to retract six papers, which have been cited more than 500 times. [Ed. note: at this time, only one paper has actually been retracted]

Continue reading Heart journal issues expression of concern after fraud report

Journal retracts two papers by Japanese cardiologist under investigation

matsubaraThe Circulation Journal, the official organ of the Japanese Circulation Society, is retracting two papers by Hiroaki Matsubara, lead researcher on the Kyoto Heart Study, for unreliable findings. Matsubara’s institution, Kyoto Prefectural University, confirmed to us last March that it was investigating the prominent cardiologist.

The work of Matsubara came into question last year when the American Heart Association issued an expression of concern for five papers the society published in its journals. Larry Husten, at Forbes/CardioBrief, reports today that the two retracted articles were “Effects of Valsartan on Cardiovascular Morbidity and Mortality in High-Risk Hypertensive Patients With New-Onset Diabetes Mellitus: Sub-Analysis of the KYOTO HEART Study,” published in September 2012; and “Enhanced cardiovascular protective effects of valsartan in high-risk hypertensive patients with left ventricular hypertrophy: Sub-analysis of the KYOTO HEART study,” which appeared in March 2011.

The retraction notice for the most recent paper states: Continue reading Journal retracts two papers by Japanese cardiologist under investigation