Brown JE, Noormohammadi AH, Courtman NF. Immunoreactivity of canine, feline, and equine D-dimer with antibodies to human D-dimer.
J Vet Intern Med 2024;
38:187-196. [PMID:
37950415 PMCID:
PMC10800179 DOI:
10.1111/jvim.16888]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 09/15/2023] [Indexed: 11/12/2023] Open
Abstract
BACKGROUND
Commercially available D-dimer assays use antibodies against human D-dimer, with limited sensitivity and specificity data in companion animals.
OBJECTIVES
To evaluate the immunoreactivity of D-dimer in plasma of dogs, horses, and cats with commercially available antibodies to human D-dimer.
ANIMALS
Plasma samples were collected from healthy dogs and horses, and from surplus feline plasma submitted for diagnostic purposes.
METHODS
Descriptive research study. A cross-linked fibrin lysate was prepared from plasma samples, and SDS-PAGE and immunoblotting were performed with a variety of commercially available antibodies to human D-dimer.
RESULTS
The selected antibodies demonstrated variable reactivity with D-dimer of each species. The monoclonal antibody DD44 bound canine D-dimer with good specificity and sensitivity, but this antibody did not react with feline or equine D-dimer. The polyclonal antibody D2D bound putative D-dimer in dogs, cats, and horses with good specificity, and higher sensitivity compared to human D-dimer.
CONCLUSIONS AND CLINICAL IMPORTANCE
The variable performance of commercially available human D-dimer assays between species is, in part, because of inter-species variation in D-dimer immunoreactivity. The use of these assays should follow validation studies. Monoclonal antibody DD44 could be a focus for the development of a canine-specific assay.
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