Skip to main content
Advertisement
Browse Subject Areas
?

Click through the PLOS taxonomy to find articles in your field.

For more information about PLOS Subject Areas, click here.

  • Loading metrics

Editorial Note: Prolonged immune alteration following resolution of acute inflammation in humans

  • The PLOS One Editors

After this article [1] was published, concerns were raised about Fig S1A. Specifically, the LC-MS/MS chromatograms in Fig S1A, with different labelling, appear similar to Figs in [215]

In response, the corresponding author stated that Fig S1A does not report experimental results for the study reported in [1] and can be disregarded. Fig S1A was used for illustrative purposes only, to show the type of LC-MS/MS data of analytical standards produced by the Shimadzu LC-20AD HPLC and Shimadzu SIL-20AC autoinjector and QTrap 5500 (ABSciex, Warrington, UK) liquid chromatography-mass spectrometer instrumentation, as described in [16].

During editorial follow-up, another issue emerged regarding results reported in Fig 4.

The corresponding author reanalyzed the LC-MS/MS lipid data in [1] using MultiQuant software (ABSciex, Warrington, UK) with the result that the SPM values reported in Fig 4 were below the limits of quantification and Figs 4E-H should be disregarded. They stated that this concern did not apply to the prostanoid results. This reanalysis was reported in [17].

A preprint [18] by Jesmond Dalli, a co-author of [1], reported another reanalysis using methodologies to determine signal to noise ratios as reported in [19], and called into question the reliability of [17]. The last two authors of [1] expressed different views on comparing sensitivity and limits of quantitation of lipid mediators between [1] and [19] and D. Gilroy noted that the equipment used in [19] is different to that used in [1]. J. Dalli stands by the findings reported in [1].

SPM data presented in Fig 4 should be interpreted in the context of both [17] and [18] and the apparent disagreement within the author group regarding the reliability of these results. A member of the PLOS One Editorial Board stated that SPM results in Fig 4 are not essential in supporting the article’s main conclusions [1].

The Data Availability statement of [1] is updated to: The individual-level data underlying the remainder of the results can be found at https://zenodo.org/records/10532531.

Owing to the concerns about similarity with previously published content, including [2], published in 2016 by the National Academy of Sciences of the United States of America [2], which is not offered under a CC BY license, this article [1] was republished on March 17, 2025, to remove Fig S1. Interested readers can view the figure of concern in Fig 3A of [2].

References

  1. 1. Motwani MP, Newson J, Kwong S, Richard-Loendt A, Colas R, Dalli J, et al. Prolonged immune alteration following resolution of acute inflammation in humans. PLoS One. 2017;12(10):e0186964. pmid:29073216
  2. 2. Dalli J, Vlasakov I, Riley IR, Rodriguez AR, Spur BW, Petasis NA, et al. Maresin conjugates in tissue regeneration biosynthesis enzymes in human macrophages. Proc Natl Acad Sci U S A. 2016;113(43):12232–7. pmid:27791009
  3. 3. Dalli J, Colas RA, Arnardottir H, Serhan CN. Vagal regulation of group 3 innate lymphoid cells and the immunoresolvent PCTR1 controls infection resolution. Immunity. 2017;46(1):92–105. pmid:28065837
  4. 4. Walker ME, Souza PR, Colas RA, Dalli J. 13-Series resolvins mediate the leukocyte-platelet actions of atorvastatin and pravastatin in inflammatory arthritis. FASEB J. 2017;31(8):3636–48. pmid:28465323
  5. 5. China L, Maini A, Skene SS, Shabir Z, Sylvestre Y, Colas RA, et al. Albumin counteracts immune-suppressive effects of lipid mediators in patients with advanced liver disease. Clin Gastroenterol Hepatol. 2018;16(5):738–747.e7. doi: pmid:28859868
  6. 6. Mai NTH, Dobbs N, Phu NH, Colas RA, Thao LTP, Thuong NTT, et al. A randomised double blind placebo controlled phase 2 trial of adjunctive aspirin for tuberculous meningitis in HIV-uninfected adults. Elife. 2018;7:e33478. pmid:29482717
  7. 7. Mai NTH, Dobbs N, Phu NH, Colas RA, Thao LTP, Thuong NTT, et al. Correction: A randomised double blind placebo controlled phase 2 trial of adjunctive aspirin for tuberculous meningitis in HIV-uninfected adults. Elife. 2023;12:e87888. pmid:36943904
  8. 8. Flak MB, Colas RA, Muñoz-Atienza E, Curtis MA, Dalli J, Pitzalis C. Inflammatory arthritis disrupts gut resolution mechanisms, promoting barrier breakdown by Porphyromonas gingivalis. JCI Insight. 2019;4(13):e125191. pmid:31292292
  9. 9. Flak MB, Colas RA, Muñoz-Atienza E, Curtis MA, Dalli J, Pitzalis C. Inflammatory arthritis disrupts gut resolution mechanisms, promoting barrier breakdown by Porphyromonas gingivalis. JCI Insight. 2022;7(20):e165600. pmid:36278492
  10. 10. Colas RA, Souza PR, Walker ME, Burton M, Zasłona Z, Curtis AM, et al. Impaired production and diurnal regulation of vascular RvDn-3 DPA increase systemic inflammation and cardiovascular disease. Circ Res. 2018;122(6):855–63. pmid:29437834
  11. 11. Thau-Zuchman O, Ingram R, Harvey GG, Cooke T, Palmas F, Pallier PN, et al. A single injection of docosahexaenoic acid induces a pro-resolving lipid mediator profile in the injured tissue and a long-lasting reduction in neurological deficit after traumatic brain injury in mice. J Neurotrauma. 2020;37(1):66–79. pmid:31256709
  12. 12. Chen J, Hamers AJP, Finsterbusch M, Massimo G, Zafar M, Corder R, et al. Endogenously generated arachidonate-derived ligands for TRPV1 induce cardiac protection in sepsis. FASEB J. 2018;32(7):3816–31. pmid:29465314
  13. 13. Frigerio F, Pasqualini G, Craparotta I, Marchini S, van Vliet EA, Foerch P, et al. n-3 Docosapentaenoic acid-derived protectin D1 promotes resolution of neuroinflammation and arrests epileptogenesis. Brain. 2018;141(11):3130–43. pmid:30307467
  14. 14. Holopainen M, Colas RA, Valkonen S, Tigistu-Sahle F, Hyvärinen K, Mazzacuva F, et al. Polyunsaturated fatty acids modify the extracellular vesicle membranes and increase the production of proresolving lipid mediators of human mesenchymal stromal cells. Biochim Biophys Acta Mol Cell Biol Lipids. 2019;1864(10):1350–62. pmid:31207356
  15. 15. Valkonen S, Holopainen M, Colas RA, Impola U, Dalli J, Käkelä R, et al. Lipid mediators in platelet concentrate and extracellular vesicles: Molecular mechanisms from membrane glycerophospholipids to bioactive molecules. Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biology of Lipids. 2019;1864(8):1168–82.
  16. 16. Colas RA, Shinohara M, Dalli J, Chiang N, Serhan CN. Identification and signature profiles for pro-resolving and inflammatory lipid mediators in human tissue. Am J Physiol Cell Physiol. 2014;307(1):C39–54. pmid:24696140
  17. 17. Homer NZM, Andrew R, Gilroy DW. Review of methodology and re-analysis of lipidomic data focusing on specialised pro-resolution lipid mediators (SPMs) in a human model of resolving inflammation. Int J Exp Pathol. 2025;106(1):e12523. pmid:39713922
  18. 18. Dalli J. Mistakes in the re-analysis of lipidomic data obtained from a human model of resolving inflammation lead to erroneous conclusions. bioRxiv. 2023.
  19. 19. Dooley M, Saliani A, Dalli J. Development and validation of methodologies for the identification of specialized pro-resolving lipid mediators and classic eicosanoids in biological matrices. J Am Soc Mass Spectrom. 2024;35(10):2331–43. pmid:39252416