<b> <i>Retracted:</i> </b> Hyaluronic Acid and Thrombin Upregulate MT1-MMP Through PI3K and Rac-1 Signaling and Prime the Homing-Related Responses of Cord Blood Hematopoietic Stem/Progenitor Cells
Post-publication record
Source: Retraction Watch, joined by DOI. OpenAlex records retraction as is_retracted, a boolean over a state space with at least four values, so it cannot express an expression of concern, a correction or a reinstatement; it reports them as false, which reads as “fine”.
Bibliographic record
Abstract
The Editor-in-Chief of Stem Cells and Development officially retracts the article entitled, “Hyaluronic Acid and Thrombin Upregulate MT1-MMP Through PI3K and Rac-1 Signaling and Prime the Homing-Related Responses of Cord Blood Hematopoietic Stem/Progenitor Cells,” by Neeta Shirvaikar, Leah A. Marquez-Curtis, Mariusz Z. Ratajczak, and Anna Janowska-Wieczorek (Stem Cells Dev 2011;20(1):19–30; doi: 10.1089/scd.2010.0118) due to suspected duplicated images in Figures 2 and 3C.1 An independent examination utilizing image-checking software was employed which confirmed multiple suspected duplications within the images. Since the paper was published in 2011, the Editor experienced significant difficulties in locating and contacting the authors at their current institutions for an explanation. Contact was made in late December 2021 with the lead author, Dr. Neeta Shirvaikar, who responded with the following: We carried out our investigation and tried to retrieve electronic (images and densitometric analyses) and physical (original gels and laboratory notebooks) records. Unfortunately due to storage space limitations and in accordance with institutional (University of Alberta and Canadian Blood Services) research record retention policies, all records are now discarded/destroyed. University of Alberta research record retention policies policy requires storage of records for five years, whereas Canadian Blood Services policy requires storage of records for seven years. The publication in question was published in January 2011 which was eleven years ago hence no records are now existent. Nevertheless, we have tried to explain the questions raised by you by closely looking at the very detailed data that was published. Dr. Shirvaikar postulated the possible reasons for the identified problems, but the Editor-in-Chief of the journal did not find them to be plausible. Continued efforts made by the Editor to ascertain a more candid response were not fruitful so the determination was made to fully retract the article. Reference 1. Bik EM. PubPeer. https://pubpeer.com/publications/D44A03002998A1695F35969762F572?utm_source=Firefox&utm_medium=BrowserExtension&utm_campaign=Firefox
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.003 | 0.014 |
| Meta-epidemiology (narrow) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.002 | 0.001 |
| Bibliometrics | 0.003 | 0.002 |
| Science and technology studies | 0.003 | 0.003 |
| Scholarly communication | 0.005 | 0.002 |
| Open science | 0.004 | 0.002 |
| Research integrity | 0.008 | 0.010 |
| Insufficient payload (model declined to judge) | 0.028 | 0.022 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".