Evidence map›Paper›PMID 39580473›Full record

ArticleActa veterinaria Scandinavica2024

Evidence of rustrela virus-associated feline staggering disease in Sweden since the 1970s.

Emma Thilén, Dennis Rubbenstroth, Sofia Tengstrand, Florian Pfaff, Jonas Johansson Wensman, Cecilia Ley

Abstract read
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Article in Acta veterinaria Scandinavica, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing 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

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3 · Its place in the literature

Who cites it

4 citing papers in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

6 authors.

Emma ThilénDepartment of Animal Biosciences, Faculty of Veterinary Medicine and Animal Science, Swedish University of Agricultural Sciences, P.O. Box 7023, 750 07, Uppsala, Sweden. emma.thilen@slu.se.ORCID http://orcid.org/0009-0000-1812-0113
Dennis RubbenstrothInstitute of Diagnostic Virology, Friedrich-Loeffler-Institut, Südufer 10, 17493 Greifswald - Insel Riems, Greifswald, Germany.
Sofia TengstrandDepartment of Animal Biosciences, Faculty of Veterinary Medicine and Animal Science, Swedish University of Agricultural Sciences, P.O. Box 7023, 750 07, Uppsala, Sweden.
Florian PfaffInstitute of Diagnostic Virology, Friedrich-Loeffler-Institut, Südufer 10, 17493 Greifswald - Insel Riems, Greifswald, Germany.
Jonas Johansson WensmanDepartment of Animal Biosciences, Faculty of Veterinary Medicine and Animal Science, Swedish University of Agricultural Sciences, P.O. Box 7023, 750 07, Uppsala, Sweden.
Cecilia LeyDepartment of Animal Biosciences, Faculty of Veterinary Medicine and Animal Science, Swedish University of Agricultural Sciences, P.O. Box 7023, 750 07, Uppsala, Sweden.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundStaggering disease (SD) is a severe neurological disease that has been regularly reported in Swedish cats since the beginning of the 1970s. The aetiology of SD has been debated, but novel rustrela virus (RusV) was recently suggested as the causative agent in Swedish cases dating from 2017 onwards. However, whether RusV was associated with earlier cases of feline SD in Sweden remained unknown. Further, presence of RusV in extraneural tissues of RusV-infected cats and viral transmission routes for RusV are still unknown. Therefore, we investigated the presence of RusV in nervous tissue of historical cases of plausible feline SD in Sweden, dating back to the 1970s, as well as the presence of RusV in selected extraneural tissues. Formalin-fixed, paraffin-embedded brain and spinal cord from 14 encephalitic cats matching the criteria for SD based on clinical and pathological records, and five non-encephalitic control cats were screened for the presence of RusV antigen and RNA using immunohistochemistry (IHC) and reverse transcription-quantitative polymerase chain reaction (RT-qPCR), respectively. Extraneural presence of RusV antigen was investigated by IHC in four known RusV-positive cats. Morphologic changes were evaluated using light microscopy. In addition, the 14 encephalitic cats were tested for Borna disease virus 1 (BoDV-1) RNA by RT-qPCR.

resultsMorphologic findings compatible with SD were confirmed in 13 of 14 encephalitic cats. All 13 cats were RusV-positive by IHC and 12 of them also by RT-qPCR. One encephalitic cat, morphologically and clinically untypical of SD, as well as all control cats tested negative for RusV RNA and showed either negative or uncertain RusV immunolabeling. There was no firm evidence of extraneural presence of RusV. All encephalitic cats were negative for BoDV-1.

conclusionsWe show that RusV has infected cats in Sweden as far back as the 1970s, whereas BoDV-1 was not detected in any of the investigated cats. This further strengthens RusV as the causative agent of feline SD. Our findings suggest that RusV is strongly neurotropic in cats and that the cat may represent a dead-end host. Further investigations into the pathogenesis of RusV-associated meningoencephalomyelitis in cats are warranted, including disease transmission, pathophysiologic responses and mechanisms of neuronal dysfunction.

Indexed as

Cat DiseasesAnimalsBrainCatsFemaleMaleSpinal CordSwedenBorna disease virusCatCNSFeline ataxiaImmunohistochemistryMeningoencephalomyelitisRT-qPCRRusV

Identifiers

PMID39580473
PMCPMC11585236

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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.