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. 2020 Dec 14;15(12):e0244044. doi: 10.1371/journal.pone.0244044

Retraction: Effects of naturally occurring six- and twelve-nucleotide inserts on newcastle disease virus replication and pathogenesis

The PLOS ONE Editors
PMCID: PMC7735483  PMID: 33315948

After this article [1] was published, concerns were raised about results reported in Figs 3, 4, and 6, and in Table 1.

Specifically:

  • The rBan panel in Fig 3d of [1] appears similar to the ‘wt Ban/010’ panel in the top row of Fig 1c of [2], which has been retracted [3]. The authors provided image data to support the experiment reported in [1] and noted that they cannot comment on why the image was duplicated in [2].

  • In Fig 4a, there appear to be vertical discontinuities in the background after lanes 1, 2, and 3 in each of the two blot panels. The authors commented that due to the strong reactivity of the N antibody, the samples were run in non-adjacent SDS-PAGE lanes. The original data needed to clarify this issue are not available, although the authors offered replication data to support this result.

  • The results reported in Fig 6 raised concerns about animal welfare and ethics considerations in the in vivo study. The article and information provided post-publication differ in descriptions of experimental endpoints and how animal clinical symptoms were scored during the in vivo experiments. Furthermore, the descriptions reported in the article for clinical scores of 2 or 3 (paralysis/twitching/wing drop, prostration) seem to align with humane endpoint criteria outlined in the study protocol (inactive, not responding to stimuli”, “Incoordination, including loss of ability to walk and stand”), according to documentation provided to the journal post-publication. In response to this issue, the author noted that all animal experiments were performed according to the IACUC protocol.

  • In Table 1, all reported SEM (standard error of the mean) values end in either 0 or 5. The authors apologized, noted that errors were made in reporting SEM values in this Table, and provided raw data to support these results. However, the information provided post-publication did not fully clarify questions raised about the published results.

In light of these concerns, the PLOS ONE Editors retract this article.

AP, SKS, and PLC did not agree with retraction. AP and PLC apologize for the issues with the published article. SKS and PLC stand by the article’s findings. The other authors either could not be reached or did not respond directly.

References

  • 1.Paldurai A, Xiao S, Kim S-H, Kumar S, Nayak B, Samal S, et al. (2014) Effects of Naturally Occurring Six- and Twelve-Nucleotide Inserts on Newcastle Disease Virus Replication and Pathogenesis. PLoS ONE 9(8): e103951 10.1371/journal.pone.0103951 [DOI] [PMC free article] [PubMed] [Google Scholar] [Retracted]
  • 2.Kim S- H, Xiao S, Paldurai A, Collins PL, Samal SK (2014). Role of C596 in the C-terminal extension of the haemagglutinin–neuraminidase protein in replication and pathogenicity of a highly virulent Indonesian strain of Newcastle disease virus. J. Gen. Virol 95(2): 331–336. 10.1099/vir.0.055285-0 [DOI] [PMC free article] [PubMed] [Google Scholar] [Retracted]
  • 3.The Microbiology Society (2020) Retraction notice: Role of C596 in the C-terminal extension of the haemagglutinin–neuraminidase protein in replication and pathogenicity of a highly virulent Indonesian strain of Newcastle disease virus. J. Gen. Virol. 101(9): 1020 10.1099/jgv.0.001464 [DOI] [PMC free article] [PubMed] [Google Scholar]

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