Evidence map›Paper›PMID 31793692›Full record

ArticleJournal of veterinary internal medicine2020

Effects of nebulized dexamethasone on the respiratory microbiota and mycobiota and relative equine herpesvirus-1, 2, 4, 5 in an equine model of asthma.

Stephanie L Bond, Matthew Workentine, Jana Hundt, UCVM Class of 2019, James R Gilkerson, Renaud Léguillette

Open access · goldAbstract read
In one paragraph

Article in Journal of veterinary internal medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
2.3field-weighted citation impact, top 14% of its field
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

16 citing papers in PubMed, 22 citations in OpenAlex.

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  12. Glucocorticoid treatment in horses with asthma: A narrative review.Journal of veterinary internal medicine · 2021
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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

6 authors at 2 institutions in 2 countries.

Stephanie L BondFaculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada.ORCID https://orcid.org/0000-0002-6700-5127
Matthew WorkentineFaculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada.
Jana HundtFaculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada.
UCVM Class of 2019Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada.
James R GilkersonCentre for Equine Infectious Disease, Melbourne Veterinary School, The University of Melbourne, Melbourne, Victoria, Australia.
Renaud LéguilletteFaculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada.ORCID https://orcid.org/0000-0003-0381-3640
University of Calgary · CAThe University of Melbourne · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundProlonged exposure to environmental antigens or allergens elicits an immune response in both healthy horses and those with mild asthma. Corticosteroids often are used to treat lower airway inflammation.

objectiveTo investigate the changes in equine herpesvirus (EHV)-1,2,4,5 glycoprotein B gene expression and changes in respiratory bacterial and fungal communities after nebulized dexamethasone treatment of horses with asthma. ANIMALS: Horses with naturally occurring mild asthma (n = 16) and healthy control horses (n = 4).

methodsProspective, randomized, controlled, blinded clinical trial. Polymerase chain reaction amplification of EHV-1,2,4,5 in bronchoalveolar lavage fluid, and 16S (microbiome) and ITS2 (mycobiome) genes with subsequent sequencing was performed on DNA extracted from nasal swabs and transendoscopic tracheal aspirates before and after 13 days treatment with nebulized dexamethasone (15 mg q24h) and saline (control).

resultsNebulized dexamethasone treatment decreased microbial diversity; relative abundance of 8 genera in the upper respiratory tract were altered. For both the microbiota and the mycobiota, environment had a dominant effect over treatment. Alternaria, an opportunistic pathogen and allergen in humans recognized as a risk factor for asthma, asthma severity, and exacerbations, was increased with treatment. Treatment affected relative quantification of the equine gamma herpesviruses (EHV-2 and -5); EHV-2 DNA levels increased and those of EHV-5 decreased.

conclusionsNebulized dexamethasone treatment affected the upper respiratory tract microbiota, but not the mycobiota, which was overwhelmed by the effect of a sustained dusty environment.

Indexed as

AnimalsAnti-Inflammatory AgentsAsthmaBacteriaDexamethasoneFungiHerpesviridaeHorse DiseasesHorsesNebulizers and VaporizersRespiratory SystemRespiratory TherapyAnti-Inflammatory AgentsDexamethasoneequine herpesvirusmild equine asthmaqPCRrespirable dustREST analysis

Identifiers

PMID31793692
PMCPMC6979091
OpenAlexW2993953523

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.