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ABSTRACT: Background
Differentiation of gastrointestinal cancer (GIC) from chronic inflammatory enteropathies (CIE) in cats can be challenging and often requires extensive diagnostic testing. MicroRNAs (miRNAs) have promise as non-invasive biomarkers in serum and feces for diagnosis of GIC.Hypothesis/objectives
Cats with GIC will have serum and fecal miRNA profiles that differ significantly from healthy cats and cats with CIE. Identify serum and fecal miRNAs with diagnostic potential for differentiation between cats with GIC and CIE as compared to healthy cats.Animals
Ten healthy cats, 9 cats with CIE, and 10 cats with GIC; all client-owned.Methods
Cats were recruited for an international multicenter observational prospective case-control study. Serum and feces were screened using small RNA sequencing for miRNAs that differed in abundance between cats with GIC and CIE, and healthy cats. Diagnostic biomarker potential of relevant miRNAs from small RNA sequencing and the literature was confirmed using reverse transcription quantitative real-time PCR (RT-qPCR).Results
Serum miR-223-3p was found to distinguish between cats with GIC and CIE with an area under the curve (AUC) of 0.9 (95% confidence interval [CI], 0.760-1.0), sensitivity of 90% (95% CI, 59.6-99.5%), and specificity of 77.8% (95% CI, 45.3-96.1%). Serum miR-223-3p likewise showed promise in differentiating a subgroup of cats with small cell lymphoma (SCL) from those with CIE. No fecal miRNAs could distinguish between cats with GIC and CIE.Conclusion and clinical importance
Serum miR-223-3p potentially may serve as a noninvasive diagnostic biomarker of GIC in cats, in addition to providing a much needed tool for the differentiation of CIE and SCL.
SUBMITTER: Brogaard L
PROVIDER: S-EPMC10473000 | biostudies-literature | 2023 Sep-Oct
REPOSITORIES: biostudies-literature
Brogaard Louise L Lyngby Janne G JG Kristensen Annemarie T AT Fredholm Merete M Bjørnvad Charlotte R CR Salavati Schmitz Silke S Skancke Ellen E Morris Joanna S JS Dupont Nana N Argyle David D Sánchez Armand A Spohr Anette A Graarup-Hansen Kasper K Nielsen Lise N LN Cirera Susanna S
Journal of veterinary internal medicine 20230724 5
<h4>Background</h4>Differentiation of gastrointestinal cancer (GIC) from chronic inflammatory enteropathies (CIE) in cats can be challenging and often requires extensive diagnostic testing. MicroRNAs (miRNAs) have promise as non-invasive biomarkers in serum and feces for diagnosis of GIC.<h4>Hypothesis/objectives</h4>Cats with GIC will have serum and fecal miRNA profiles that differ significantly from healthy cats and cats with CIE. Identify serum and fecal miRNAs with diagnostic potential for d ...[more]