Evidence map›Paper›PMID 40586204›Full record

ArticleJournal of fish biology2025

Insights into mucosal and systemic immune responses of African catfish, Clarias gariepinus, to chilodonellosis: A natural infection study.

Walaa F A Emeish, Salwa Mansour, Marwa M Fawaz, Ali H Alghamdi, Abdullah A A Alghamdi, Zeinab Al-Amgad, Haitham H Mohammed, Catrin S Rutland, Ahmad A Elkamel, Karima A Bakry

Abstract read
In one paragraph

Article in Journal of fish biology, 2025. 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. Article
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

10 authors.

Walaa F A EmeishDepartment of Fish Diseases, Faculty of Veterinary Medicine, South Valley University, Qena, Egypt.ORCID https://orcid.org/0000-0001-7523-3720
Salwa MansourZoology Department, Faculty of Science, South Valley University, Qena, Egypt.ORCID https://orcid.org/0000-0002-6682-178X
Marwa M FawazDepartment of Parasitology, Faculty of Veterinary Medicine, South Valley University, Qena, Egypt.ORCID https://orcid.org/0000-0003-0560-9504
Ali H AlghamdiDepartment of Biology, Faculty of Science, Al-Baha University, Al-Baha, Saudi Arabia.ORCID https://orcid.org/0000-0003-0426-9237
Abdullah A A AlghamdiDepartment of Biology, Faculty of Science, Al-Baha University, Al-Baha, Saudi Arabia.ORCID https://orcid.org/0000-0003-3136-9081
Zeinab Al-AmgadGeneral Authority for Veterinary Services, Qena Veterinary Directorate, Qena, Egypt.ORCID https://orcid.org/0000-0002-4039-4759
Haitham H MohammedDepartment of Rangeland, Wildlife, and Fisheries Management, Texas A&M University, College Station, Texas, USA.ORCID https://orcid.org/0000-0002-0717-6055
Catrin S RutlandSchool of Veterinary Medicine and Science, University of Nottingham, Nottingham, UK.ORCID https://orcid.org/0000-0002-2009-4898
Ahmad A ElkamelDepartment of Aquatic Animal Medicine and Management, Faculty of Veterinary Medicine, Assiut University, Assiut, Egypt.ORCID https://orcid.org/0000-0002-3319-7423
Karima A BakryDepartment of Fish Diseases, Faculty of Veterinary Medicine, South Valley University, Qena, Egypt.ORCID https://orcid.org/0000-0002-6609-2476

Funding

Al-Baha UniversityAssiut UniversitySouth Valley UniversityTexas A and M UniversityTexas A&M Veterinary Medical Diagnostic LaboratoryUniversity of Nottingham
6 · The paper itself

Abstract

A natural parasitic infection with the external ciliate protozoan, Chilodonella hexasticha, was recorded 3 days post-transportation (PT) in the gills and skin of African catfish (Clarias gariepinus). Infected fish displayed behavioural changes and typical signs of infection. Mortalities started on day 7 PT and stopped on day 13 PT, where cumulative mortality reached 62.2%. The expression of immune-relevant genes, interleukin-1β (IL-1β), major histocompatibility complex class II (MHC-II) and interleukin-10 (IL-10) in the gills, head kidneys and spleen of the Chilodonella-infected and control uninfected fish were investigated using quantitative real-time polymerase chain reaction (PCR) on days 7-, 14- and 28 PT. Expression levels of IL-1β in the gills showed a significant upregulation on day 7 PT but were not significantly different from those of the control fish in the head kidneys and spleen at all time points investigated. Expression levels of MHC-II were significantly elevated in the gills (days 7- and 14 PT), head kidneys (days 7-, 14- and 28 PT) and spleen (days 7- and 14 PT), whereas IL-10 showed a significant upregulation only in the gills on day 14 PT, with no significant changes in all other tissues examined. Additionally, histological studies were conducted to investigate the alterations in the head kidney and spleen tissue structures associated with the immune response to infection and the changes in the expression profiles of the immune-related genes in these organs. Depletion of the renal and splenic tissues, simultaneously with prominent melanomacrophage infiltration, was observed. Also, the histopathologic changes caused by C. hexasticha in the gills of infected fish involved aggravated tissue damage characterized by hyperplasia, and necrosis of the gill lamellae was recorded.

Indexed as

CatfishesCiliophoraCiliophora InfectionsFish DiseasesImmunity, MucosalAnimalsGillsHead KidneyInterleukin-10Interleukin-1betaSpleenInterleukin-10Interleukin-1betaectoparasitesgene expressionIL‐10IL‐1βimmune responseMHC‐II

Identifiers

PMID40586204
PMCPMC12536051

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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.