Peripheral blood lymphocyte subtypes in dogs with different stages of myxomatous mitral valve disease

Druzhaeva, Natalia (author), Nemec Svete, Alenka (author), Ihan, Alojz (author), Pohar, Katka (author), Domanjko-Petrič, Aleksandra (author)

Background: Data on alterations in peripheral blood lymphocyte (PBL) subtypes in dogs with myxomatous mitral valve disease (MMVD) is lacking. Objectives: To investigate PBL subtypes and their correlation with parameters of inflammation and MMVD progression markers in dogs with different stages of MMVD. Animals: Seventy-eight client-owned dogs: 65 with MMVD (American College of Veterinary Internal Medicine [ACVIM] classification stages B2, C, and D) and 13 healthy controls. Methods: Prospective cross-sectional study. Complete cardiac assessment, flow cytometry (T lymphocytes [CD3+], their subtypes [CD3+CD4+, CD3+CD8+, CD3+CD4+CD8+, CD3+CD4−CD8−], and B lymphocytes [CD45+CD21+]) and measurement of N-terminal pro B-type natriuretic peptide, cardiac troponin I, and C-reactive protein concentrations were performed. Results: The percentage of CD3+CD4+ lymphocytes was significantly lower in stable ACVIM C patients (P = .01) and unstable ACVIM C and D patients (P = .003), the percentage of CD3+CD8+ lymphocytes was significantly higher in stable ACVIM C patients (P = .01) and unstable ACVIM C and D patients (P = .01), CD3+CD8+ lymphocyte concentration was significantly higher in unstable ACVIM C and D patients (P = .05), and the CD3+CD4+/CD3+CD8+ ratio was significantly lower in stable ACVIM C patients (P = .01) and unstable ACVIM C and D patients (P = .01) compared with healthy controls. Conclusions and Clinical Importance: The percentages of CD3+CD4+ and CD3+CD8+ PBL and CD4+/CD8+ ratio were altered in MMVD dogs with congestive heart failure (ACVIM C, D), but not in ACVIM B2, suggesting involvement of these PBL subtypes in the pathogenesis of congestive heart failure in dogs with MMVD.

• Language: English
• Keywords: canine, CD21 B lymphocytes, CD3 T lymphocytes, CD4 T helper lymphocytes, CD45, CD8 cytotoxic T lymphocytes, congestive heart failure, degenerative mitral valve disease, flow cytometry, heart diseases, dogs
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: VF - Veterinary Faculty; MF - Faculty of Medicine
• Publication status: Published
• Publication version: Version of Record
• Year: 2021
• Number of pages: Str. 2112-2122
• Numbering: Vol. 35, iss. 5
• PID: 20.500.12556/RUL-144752
• UDC: 636.7.09:616.1
• ISSN on article: 1939-1676
• DOI: 10.1111/jvim.16207
• COBISS.SI-ID: 69808131
• Publication date in RUL: 10.03.2023

Record is a part of a journal

• Title: Journal of veterinary internal medicine
• Publisher: American College of Veterinary Internal Medicine, Wiley
• ISSN: 1939-1676
• COBISS.SI-ID: 517778713

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• License: CC BY-NC 4.0, Creative Commons Attribution-NonCommercial 4.0 International
• Link: http://creativecommons.org/licenses/by-nc/4.0/
• Description: A creative commons license that bans commercial use, but the users don’t have to license their derivative works on the same terms.

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: P4-0053
• Name: Endokrini, imunski in encimski odzivi pri zdravih in bolnih živalih