Geng Integrity Report: Effects of Propofol Pre-treatment on Renal Ischemia-Reperfusion Injury in Rats (DOI: 10.16766/j.cnki.issn.1674-4152.2012.08.051)

Academic fraud report · Geng Detector

Summary

This report assesses the paper by Jiang Lin et al., published in Chinese Journal of General Practice (2012), on propofol pre-treatment and renal ischemia-reperfusion injury in rats. The overall verdict is confirmed major problems. Three core issues were identified. First, the authors used t-tests for a three-group design (sham, I/R, propofol), as stated in both Methods and Table 1/2 notes, which inflates Type I error and constitutes a fundamental statistical flaw. Second, the Western blot procedure (Section 1.4) describes protein extraction, BCA quantification, SDS-PAGE, transfer, antibody incubation, and chemiluminescent imaging, yet the paper never mentions any loading control (e.g., beta-actin, GAPDH); absolute greyscale values without normalization are biologically uninterpretable. Third, the extracted text shows severe character-encoding corruption and includes an unrelated surgical paper on anatomical hepatectomy for hepatocellular carcinoma (28 patients) appended after the discussion and references, indicating text splicing or improper source compilation. Image-based fraud checks could not be performed because no pixel data were provided. Confidence is high for findings 1-3; image integrity remains undetermined.

Verdict

🔴 Confirmed major integrity issues. The paper contains fundamental statistical, methodological, and textual integrity problems. Image-based checks were not possible due to absence of pixel data.

Key findings

Statistical method misuse (orange severity): The study compares three groups (Sham S, I/R, Propofol P) but the Methods section states that SPSS 13.0 was used for "standard deviation calculation and t-test," and Tables 1/2 footnotes report t and P values, consistent with pairwise t-tests rather than ANOVA. This is methodologically inappropriate for a ≥3-group design.
Western blot performed without a loading control (red severity): Section 1.4 describes tissue protein extraction, BCA assay, SDS-PAGE, transfer to nitrocellulose, antibody incubation, and chemiluminescent detection with densitometric greyscale measurement, but no internal control (e.g., beta-actin, GAPDH) is mentioned anywhere. Reported absolute greyscale values cannot be interpreted without normalization.
Text splicing / encoding corruption (orange severity): The extracted text contains severe garbled characters and, after the discussion and references, includes an unrelated clinical surgery manuscript on anatomical hepatectomy for hepatocellular carcinoma (28 patients, e.g., "28 hepatocellular carcinoma patients without cirrhosis," "hepatocellular carcinoma is a common malignancy in Asia and Africa"). This indicates the source file was spliced from heterogeneous documents.
Image integrity not assessable (yellow severity): No histological or Western blot images were available, so reuse/rotation/splicing checks could not be performed.

Evidence highlights

Methods statement (corrupted original): Ó¦ÓÃ T3TT#+)" Èí¼þ°ü¶ÔÊý¾Ý½øÐÐ±ê×¼²î¼ÆËãºÍ 5 ¼ìÑé — confirmed translation: use of SPSS 13.0 for SD calculation and t-test on three-group data.
Tables 1/2 footnotes (corrupted original): 5 : 5 V#+)$!' and similar — confirmed translation: t-values and P-values reported, consistent with t-test rather than ANOVA.
Section 1.4 (corrupted original): #%' Éö××Ö¯ U0HSP# ºÍ XJQP! ±í´ïµÄ²â¶¨; sub-procedures ,*T]TP3HGf µçÓ¾ (SDS-PAGE electrophoresis); Ò»¿¹·Ö±ðÎªÍÃ¿¹Êó U0HSP# ¶à¿ËÂ¡¿±Ìå... (primary antibodies: rabbit anti-rat ICAM-1 polyclonal...). No loading control mentioned.
Appended text block (corrupted original): ! ½á¹û +( Àý¸Î°©»¼ÕßÖÐÎÞ¸ÎÓ²±ä (Results: of 28 HCC patients, none had cirrhosis); ÌÖÂÛ ¸Î°©ÊÇÑÇÖÞºÍ·ÇÖÞµÄ³£¼û¶ñÐÔÖ×Áö (Discussion: HCC is a common malignant tumor in Asia and Africa). This is an unrelated clinical hepatectomy manuscript pasted into the file.
DOI preserved: 10.16766/j.cnki.issn.1674-4152.2012.08.051

Notes

All three primary findings (1, 2, 3) were verified and are marked ✅ Confirmed.
Finding 4 (image fraud) is marked ⚠️ Insufficient evidence; no conclusion is drawn on image integrity.
Character-encoding corruption in the source text was decoded to the best effort to verify quoted content, but rendering of the original Chinese typeset article was not independently checked.
Recommended actions in the source report: request uncropped Western blot raw images including loading controls; post concerns on PubPeer; report to the journal editorial office for investigation of statistical rigor, missing controls, and apparent text-splicing/plagiarism.
Final determination of research misconduct requires an official institutional investigation.