Retraction Watch

Tracking retractions as a window into the scientific process

Archive for the ‘j controlled release’ Category

U Colorado’s former “golden boy” up to 7 retractions

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University of Colorado DenverA former graduate student at the University of Colorado Denver has gained three retractions and two expressions of concern (EOC), following an institutional probe into his work. 

Last year, we reported on an investigation by the University of Colorado Denver into the research of Rajendra Kadam, which recommended retracting 10 papers. The report also flagged eight additional papers co-authored by Kadam whose data could not be validated, raising “concerns as to the scientific validity and integrity” of the material. A few months later, we reported on some of the notices — four retractions and an EOC — that had begun to appear for Kadam’s manuscripts.

We’ve since discovered more notices, bringing his total to seven retractions and three EOCs. 

Kadam was once a prominent member in the lab of Uday Kompella, and often referred to by colleagues as the “golden boy,” according to the institution’s report. In 2012, he won a graduate student symposium award from the American Association of Pharmaceutical Scientists.

A University of Colorado Denver spokesperson told Retraction Watch: Read the rest of this entry »

Four more retractions for biomaterials researcher brings total to 7

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Journal of Controlled ReleaseA biomaterials researcher has lost four more papers for figure-related issues such as duplications, bringing his total to seven retractions.

We previously reported on three retractions two by the Journal of Controlled Release (JCR) of papers co-authored by Hossein Hosseinkhani, who is currently based at the National Taiwan University of Science and Technology in Taipei. Now, the JCR is pulling four more studies that list Hosseinkhani as a co-author.

Here’s the retraction notice for “Enhanced expression of plasmid dna – cationized gelatin complex by ultrasound in murine muscle:” Read the rest of this entry »

Journals retracts three bone papers for duplication by same author

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1-s2.0-S0168365907X02700-cov150hA journal is Journals are retracting three papers after a biomaterials researcher duplicated his own work, sometimes using the same figures to describe different experiments.

Two of the papers are on bone regeneration; one is about targeting tumors. In addition to issues with figures, two one of the retraction notes explain that the papers contain “widespread plagiarism of text” from other papers by the researcher, Hossein Hosseinkhani.

Hosseinkhani is currently affiliated with the National Taiwan University of Science and Technology; when he did the work in the now retracted papers, published in 2004 and 2007, he was based at Kyoto University Hospital and then National Institute for Materials Science in Japan.

The Journal of Controlled Release published all three two of the papers. Here’s the retraction note for “Bone regeneration through controlled release of bone morphogenetic protein-2 from 3-D tissue engineered nano-scaffold,” which has been cited 118 times, according to Thomson Scientific’s Web of Knowledge.

Read the rest of this entry »

Study plagiarizes so many other papers, retraction notice can’t list them all

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j controlled releaseIn a new retraction notice, the Journal of Controlled Release is living up to its name.

The editor-in-chief has retracted a study that plagiarized “a large number” of papers, but only three are listed in the notice. Here’s the notice for “In situ-forming hydrogels for sustained ophthalmic drug delivery,” by Basavaraj K. Nanjawade, F.V. Manvi, and A.S. Manjappa, three researchers at India’s KLES’s College of Pharmacy, JN Medical College Campus, Karnataka: Read the rest of this entry »

Written by Ivan Oransky

March 8th, 2013 at 2:00 pm