Evidence map›Paper›PMID 41924759›Full record

ReviewPoultry science2026

Pathological mechanisms of avian viral oncogenesis: The central role of MicroRNA.

Ahmed Fotouh, Rania M Elbatawy, Ibrahim Eldaghayes, Eman Abd El-Menamm Shosha

Abstract readReview
In one paragraph

Review in Poultry science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Ahmed FotouhPathology and Clinical Pathology Department, Faculty of Veterinary Medicine, New Valley University, Kharga, Egypt. Electronic address: ahmedfotouh@vet.nvu.edu.eg.
Rania M ElbatawyPathology Department, Faculty of Veterinary Medicine, Benha University, Moshtohor, Toukh 13736, Qaluiobiya, Egypt.
Ibrahim EldaghayesDepartment of Microbiology and Parasitology, Faculty of Veterinary Medicine, University of Tripoli, Tripoli P.O. Box 13662, Libya.
Eman Abd El-Menamm ShoshaVirology Department, Faculty of Veterinary Medicine, New Valley University, Kharga, Egypt.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Avian oncogenic viruses represent a major cause of neoplastic and immunosuppressive diseases in poultry, leading to substantial economic losses worldwide and providing valuable models for studying virus-induced tumorigenesis. Among these viruses, Marek's disease virus, avian leukosis virus, and reticuloendotheliosis virus induce lymphoid and hematopoietic malignancies through distinct yet convergent molecular mechanisms. Increasing evidence indicates that microRNAs and their viral homologs are central regulators linking viral infection to oncogenic transformation, immune dysregulation, and pathological outcomes. This review provides an integrated overview of microRNA's role in the pathogenesis and pathology of avian oncogenic viral diseases, emphasizing its contributions to lymphocyte proliferation, survival, immune modulation, and tumor development. We discuss the unique case of Marek's disease virus, in which a viral microRNA ortholog is indispensable for tumor induction in vivo, representing the first direct demonstration of a virus-encoded microRNA acting as a primary oncogenic factor in a natural host. In contrast, avian leukosis virus and reticuloendotheliosis virus exploit host microRNA pathways through insertional mutagenesis and NF-κB-mediated transcriptional activation, respectively, contributing to tumor progression in a context-dependent manner. The review further correlates molecular findings with gross and microscopic pathological lesions. It highlights how microRNA-driven regulatory networks shape disease severity, tissue tropism, and tumor morphology. So, these insights establish microRNA as a conserved molecular hub in avian viral oncogenesis and underscore its relevance for understanding viral tumor pathology, improving differential diagnosis, and advancing comparative oncology across species.

Indexed as

CarcinogenesisMarek DiseaseMicroRNAsOncogenic VirusesPoultry DiseasesTumor Virus InfectionsAnimalsAvian LeukosisAvian Leukosis VirusChickensHerpesvirus 2, GallidReticuloendotheliosis virusReticuloendotheliosis Viruses, AvianMicroRNAsmicroRNAOncogenicPathogenesisPathologyVirus

Identifiers

PMID41924759
PMCPMC13068822

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.