Category: dipak das

Retraction of review of broccoli’s health benefits is 22nd for deceased author, 5th for one of his postdocs

Dipak Das

Broccoli almost certainly is good for you — but just how good might have taken a bit of a hit with the retraction of a 12-year-old review on the vegetable’s health benefits by a notorious fraudster. 

By our count, the retraction, which appeared in July, marks the 22nd for Das, formerly of the University of Connecticut, who died in 2013. 

It’s also the fifth retraction for Das’ co-author, and former postdoc, Hannah Vasanthi; four of those papers were collaborations with Das but the most recent, in Carbohydrate Polymers, was not. Several other papers by Vasanthi have been flagged on PubPeer — over concerns about plagiarism, image issues and problematic data — and she has had at least four corrections and one expression of concern. (One article by Vasanthi that Elisabeth Bik identified in 2019 appears to contain text lifted from a 2010 article by Bharat Aggarwal, formerly of MD Anderson Cancer Center, whose name may be familiar to Retraction Watch readers.) 

Continue reading Retraction of review of broccoli’s health benefits is 22nd for deceased author, 5th for one of his postdocs

Late resveratrol researcher Dipak Das manages to revise and publish paper from the grave

Das, via UConn
Das, via UConn

Follow this timeline, if you would:

  • August 14, 2013: Former UConn researcher Dipak Das, who was found to have committed misconduct, submits a paper to Oxidative Medicine and Cellular Longevity.
  • September 19, 2013: Das dies.
  • October 17, 2013: Das submits revisions to his paper in Oxidative Medicine and Cellular Longevity.
  • October 18, 2013: Paper accepted.
  • January 12, 2014: Paper published.

That would appear to be what the timeline on the paper — which lists Das as corresponding author, along with a Gmail address — says:

Continue reading Late resveratrol researcher Dipak Das manages to revise and publish paper from the grave

Late resveratrol researcher Dipak Das up to 20 retractions

Das, via UConn
Das, via UConn

Dipak Das, the former University of Connecticut researcher found to have committed more than 100 counts of misconduct, and who passed away last year, has had another retraction appear.

Here’s the notice, for “Dynamic Action of Carotenoids in Cardioprotection and Maintenance of Cardiac Health,” from Molecules:

Continue reading Late resveratrol researcher Dipak Das up to 20 retractions

Dipak Das dies at 67

Das, via UConn
Das, via UConn

Dipak Das, the resveratrol researcher who had 19 papers retracted following findings of misconduct by the University of Connecticut, has died at the age of 67.

Das died on September 19, according to an obituary posted to the Hartford Courant‘s website. The obituary does not give a cause of death. Continue reading Dipak Das dies at 67

Catching up: OSU “missed fraud,” Dipak Das lost tenured professorship, Ivan on NPR’s Science Friday

Terry Elton, via OSU
Terry Elton, via OSU

We have a few follow-ups from stories we’ve recently covered:

Terry Elton case initially chalked up to “disorganization,” not misconduct

Ohio State University (OSU), which along with the Office of Research Integrity (ORI) recently sanctioned a pharmacy professor for image manipulation, “failed at first to recognize his deception,” according to an investigation by The Columbus Dispatch based on university documents.

The piece, which quotes Ivan, reveals that OSU needed some prompting from the ORI before it concluded that Terry Elton was guilty of misconduct, and not just unintentional errors that he at one point blamed on a research technician who lost her job in October 2011: Continue reading Catching up: OSU “missed fraud,” Dipak Das lost tenured professorship, Ivan on NPR’s Science Friday

Scientists retract paper because they’re “not satisfied with the quality of some of the data”

antiox and redoxA group of smoking researchers — no, not scientists who are on fire; scientists who study the effects of tobacco smoke — has retracted a 2009 article after deciding that they were no longer “satisfied with the quality of the data.”

The paper, “Cigarette Smoke–induced Oxidative/Nitrosative Stress Impairs VEGF- and Fluid Shear Stress–Mediated Signaling in Endothelial Cells,” came from the lab of Irfan Rahman, a lung disease expert at the University of Rochester. It appeared online in 2009 in Antioxidants & Redox Signaling, which will be familiar to readers watching the case of Dipak Das. 

As the notice explains: Continue reading Scientists retract paper because they’re “not satisfied with the quality of some of the data”

Odd: Retractions 18 and 19 for Dipak Das, and a new paper in the same journal, as if nothing were amiss

Dipak Das, the resveratrol researcher found guilty of more than 100 counts of misconduct by the University of Connecticut, has two more retractions for his resume. But that’s not the most interesting part of this post, so keep reading after the notices.

Both retractions appeared in the October 2012 issue of the Journal of Cellular and Molecular Medicine. Here’s the first notice: Continue reading Odd: Retractions 18 and 19 for Dipak Das, and a new paper in the same journal, as if nothing were amiss

Retraction count for Dipak Das rises to 17

We have four more retractions by Dipak Das, the disgraced UConn researcher found by the university to have committed 145 counts of misconduct. All appear in the Journal of Molecular and Cellular Cardiology (we left the journal off when we initially posted, as commenters noted):

“Redox regulation of angiotensin II preconditioning of the myocardium requires MAP kinase signaling,” cited 28 times, according to Thomson Scientific’s Web of Knowledge:
Continue reading Retraction count for Dipak Das rises to 17

Seeing red (wine): Another retraction for Dipak Das, making count 13

Today’s Retraction Watch, to paraphrase Sesame Street, is brought to you by the number 13.

Earlier, we reported on several retractions from Diederik Stapel that bring his total to that number, and now we’ve learned about number 13 for Dipak Das. Das is of course the UConn researcher who was found to have committed 145 counts of misconduct in his studies of the red wine compound resveratrol and other subjects.

Here’s the notice, from The Journal of Nutritional Biochemistry, for “Resveratrol, a unique phytoalexin present in red wine, delivers either survival signal or death signal to the ischemic myocardium depending on dose:” Continue reading Seeing red (wine): Another retraction for Dipak Das, making count 13

Resveratrol researcher Das in video: Yes, I manipulated images, but only because the journals asked me to

Das, via UConn

Dipak Das, who until earlier this year ran a high-profile cardiovascular research center at the University of Connecticut, has recorded a slick looking video defense against allegations that he cooked data and manipulated images in scores of published studies, 12 of which have been retracted to date.

Das, who was hit with a 60,000 pages of allegations stemming from a three-year investigation by the university, spends the bulk of the documentary-style interview — which is available on YouTube — talking about the wonders of resveretrol. But he gets into the misconduct charges at about the 15-minute mark.

Continue reading Resveratrol researcher Das in video: Yes, I manipulated images, but only because the journals asked me to