Evaluation of coated platelets, a subset of highly procoagulant platelets, in healthy dogs and dogs with neoplasia

Kelly M. Makielski, Leslie E. Fox, Chad M. Johannes, Aaron K. Rendahl, Ashley J. Schulte, Jong Hyuk Kim, Brian D. Husbands, Jillian Z. Walz, Michael S. Henson, Jaime F. Modiano, Dana N. Levine

Research output: Contribution to journalArticlepeer-review

Abstract

OBJECTIVE To determine if dogs with neoplasia produce more coated platelets, a subpopulation of activated platelets gener-ated by dual stimulation with thrombin and convulxin, a glycoprotein VI agonist, than healthy control dogs. ANIMALS Client-owned dogs diagnosed with lymphoma (n = 19) or solid tumors (14) and healthy control dogs (14). PROCEDURES Platelets were stimulated ex vivo with thrombin and convulxin. Flow cytometry was used to quantify the percentage of coated platelets based on high levels of surface fibrinogen. To compare the percentage of coated platelets between the three groups, an ANOVA was performed followed by pairwise 95% confidence intervals (CI) adjusted for multiple comparisons using Tukey’s method. RESULTS We observed a greater mean percentage of coated platelets in dogs with solid tumors, compared with healthy control dogs, by 10.9 percentage points (95% CI: −1.0, 22.8), and a mean percentage of coated platelets in dogs with lymphoma that was less than healthy control dogs by 0.3 percentage points (95% CI: −11.4, 10.8). CLINICAL RELEVANCE This study provides the first data-based evidence that dogs with solid tumors may have a greater mean coated platelet percentage when compared with healthy control dogs, although there is overlap between groups. Fur-ther studies are needed investigating coated platelets in specific subsets of neoplasia and investigating additional mechanisms of hypercoagulability in dogs with neoplasia.

Original languageEnglish (US)
JournalAmerican journal of veterinary research
Volume83
Issue number10
DOIs
StatePublished - Oct 2022

Bibliographical note

Funding Information:
This study was supported by the Iowa State University Veterinary Clinical Sciences Research Incentive fund.

Publisher Copyright:
© 2022, American Veterinary Medical Association. All rights reserved.

PubMed: MeSH publication types

  • Journal Article

Fingerprint

Dive into the research topics of 'Evaluation of coated platelets, a subset of highly procoagulant platelets, in healthy dogs and dogs with neoplasia'. Together they form a unique fingerprint.

Cite this