Retraction Watch

Tracking retractions as a window into the scientific process

Archive for the ‘cardiovascular research’ Category

Authors retract two statin papers, one with problems “too extensive to revise”

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Researchers in China have retracted two 2016 papers about the possible use of a cholesterol-lowering agent to treat bleeding on the brain.

One of the retracted papers in the Journal of Neurosurgery (JNS) had multiple problems that were “too extensive to revise,” according to the lengthy retraction notice, relating to issues with authorship, data analyses, and patient enrollment. The notice is signed by first author Hua Liu of the Nanjing Medical University in China.

Liu is also the first author of another recently retracted paper in Frontiers in Neuroscience, pulled for incorrectly categorizing patients.

The JNS retraction notice begins: Read the rest of this entry »

Authors use same images in two studies — one is retracted, the other flagged by journal

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After researchers in China included the same images in two papers published online one month apart, one paper has been retracted, and the other flagged with an expression of concern. 

According to the retraction notice in the International Journal of Molecular Medicine (IJMM), the authors intended that the two different papers offered “different research perspectives.”

Meanwhile, the Chinese Medical Journal — which published the same images one month later — has issued an expression of concern (EOC), noting it “should not be considered as a statement regarding the validity of the work.” Both papers describe how cells regulate blood flow to the retina.

Normally, journals choose to retract the most recent paper containing duplicated images, but in this case, the IJMM paper was published online in February 2016, and the Chinese Medical Journal in March.

Here’s the retraction notice: Read the rest of this entry »

Prominent heart researcher dismissed by Ontario university; colleagues appeal

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karmazyn1

Morris Karmazyn

Earlier this month, Morris Karmazyn, an award-winning cardiovascular researcher who’s published hundreds of papers, was called into a meeting with the office of faculty relations at the University of Western Ontario, and terminated.

The reason? A series of image problems in some of his papers, raised by a former member of his lab. When Karmazyn, Canada Research Chair in Experimental Cardiology, was told it was a case of “misconduct,” he was floored: Read the rest of this entry »

Written by Alison McCook

October 27th, 2016 at 10:40 am

Authors retract (and replace) cardiac rehab study in JAMA journal

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jama-internal-medicine

Researchers have retracted and replaced a 2014 paper in JAMA Internal Medicine after realizing a number of errors had affected the findings.

The authors note the mistakes do not have a significant impact on the overall proportion of heart patients who participated in cardiac rehab. However, a number of findings were affected, such as the difference in participation in cardiac rehab defined by race, and how the overall participation has changed throughout the years.

Therefore, JAMA Internal Medicine has published a lengthy notice of retraction and replacement, which explains the errors made in the original paper, and updated the first paper with a new version of the study.

The retraction and replacement notice, issued this week, starts: Read the rest of this entry »

Cardiovascular researcher in Taiwan logs four retractions

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clinical-scienceA researcher has earned four retractions following an investigation at his institutions in Taiwan.

The retraction notices, which appear in Clinical Science, mention investigations into the work of Kou-Gi Shyu at the Shin-Kong Wu Ho-Su Memorial Hospital and Taipei Medical University (TMU).

Shyu is listed as being affiliated with both institutions in the original papers, but a TMU official told us Shyu left his teaching role at TMU amidst the probe. Shyr-Yi Lin, professor of medicine and dean of research and development at TMU, noted: Read the rest of this entry »

Second paper about major blood pressure drug trial in Japan to be retracted

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hr_cimageA second paper about a major randomized trial in Japanese patients with heart disease is being retracted, after an investigation reportedly found multiple problems with the paper.

As predicted by Pharma JapanHypertension Research is retracting a 2011 paper, already the subject of two errata. Although a spokesperson said she couldn’t say why the paper was being retracted, as the notice was still in production, editor Toshihiko Ishimitsu told us: Read the rest of this entry »

Doctor who participated in fake chocolate study fined for violating code of conduct

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Source: AKA

Source: AKA

A German district attorney has fined a doctor who participated in a bogus study showing chocolate helps weight loss, designed to illustrate how shady science can make the news, arguing it was unethical to ask people to participate unknowingly in such a scam.

As soon as the study was published, critics raised questions over whether it was appropriate to include volunteers in a bogus clinical trial, which included giving blood. Recently, a German district attorney for professional conduct of physicians ruled that it was not.

In an anonymized version of a decision from the district attorney – who investigates on possible violations of the physicians’ professional law – he fined the doctor who participated in a bogus study about the health benefits of chocolate 500 Euros for not obtaining proper consent from the people who volunteered to participate, and for not involving an ethics committee. Read the rest of this entry »

Written by Hinnerk Feldwisch-Drentrup

September 22nd, 2016 at 8:00 am

Author objects to retraction of heart study, implies industry played role

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JACC

The Journal of the American College of Cardiology (JACC) has retracted a recently published paper that questioned the effectiveness of a treatment for irregular heartbeat, against the last author’s wishes. 

Andrea Natale, the study’s last and corresponding author and Executive Medical Director of Texas Cardiac Arrhythmia at Austin, took to social media today to express his frustration in the retraction of the July paper, which showed electrical rotors were less effective at fixing irregular heartbeat than other treatments. On Twitter, Natale implied industry played a role in its demise.

However, according to the retraction notice, the paper was felled by problems with randomization; Natale has admitted that some patients were removed from the analysis after one center included them incorrectly.

Here’s the retraction notice for “Impact of Rotor Ablation in Nonparoxysmal Atrial Fibrillation Patients Results From the Randomized OASIS Trial:” Read the rest of this entry »

Professor forced to retire after threatening co-author

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jialalI-bio

Ishwarlal “Kenny” Jialal

As the University of California Davis is reeling from the resignation of Chancellor Linda Katehi over alleged ethical violations, we’ve learned of more drama at the school: The fallout from a single retraction back in 2012 pushed one UC Davis professor into early retirement this summer without professor emeritus status.

What’s more, a UC Davis committee had recommended that former professor Ishwarlal “Kenny” Jialal retire early but maintain his professor emeritus status, and Katehi overruled that decision, deciding to strip Jialal of any future emeritus status.

Here’s the story: Jialal was found innocent of any research misconduct after Nutrition Reviews journal editors found portions of a 2008 review paper contained writing from the Linus Pauling Institute website, according to an internal investigation. However, after the first author — former postdoc Uma Singh, now an adjunct professor at Valencia College in Orlando — admitted to plagiarizing a passage, the investigation found Jialal sent her threatening emails in reaction to the perceived smear of the retraction on his reputation.

For instance, Read the rest of this entry »

Written by trevorlstokes

September 1st, 2016 at 11:30 am

Author lifts from one paper in two different articles. Why does one journal retract, while the other corrects?

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circ resAre there instances when similarities between papers should be fixed by a correction, rather than a retraction?

We’re asking ourselves that question after seeing two journals take very different approaches to a somewhat similar situation. Last year, Frontiers in Physiology retracted a paper by Anastasios Lymperopoulos at Nova Southeastern University in Florida because of an “an unacceptable level of similarity” to a 2009 review article by different authors. But more recently, after Circulation Research discovered another paper co-authored by Lymperopoulos also contained similar text from the same 2009 review, it decided to correct the passages.

The last author of the Circulation Research paper told us the overlap between the two papers was less than 5%, and the journal never suggested the authors retract the paper.

Here’s the correction notice in Circulation Research:

Read the rest of this entry »