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Anticoagulant-induced Alterations in Pig Platelets.

A Bouvet, S Yamashiro, W McDonell

The Canadian Veterinary Journal = La Revue Veterinaire Canadienne

|November 1, 1986

Summary

Oxalates severely distort platelet morphology in veterinary blood samples. This is likely due to calcium oxalate salt formation altering intracellular electrolytes, impacting platelet integrity.

Area of Science:

Veterinary Hematology
Biochemistry

Background:

Anticoagulants are essential for preserving platelet morphology in blood samples.
Common anticoagulants include heparin, oxalate salts, and citrates.
Platelet morphology is critical for accurate hematological analysis.

Purpose of the Study:

To investigate the impact of different anticoagulants on platelet morphology in veterinary blood samples.
To determine the specific effects of oxalate salts on platelet structure.
To hypothesize the mechanism behind oxalate-induced platelet morphological changes.

Main Methods:

Blood samples from veterinary animals were collected using various anticoagulants (heparin, oxalates, citrates).
Platelet morphology was examined under microscopy.

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Morphological changes were documented and compared across different anticoagulant groups.

Main Results:

Oxalate anticoagulants caused significant morphological distortion in platelets.
Specific changes included the formation of membranous extensions, pseudopodia, and loops.
Heparin and citrate anticoagulants did not induce similar severe distortions.

Conclusions:

Oxalate salts are detrimental to platelet morphological integrity in veterinary blood samples.
The observed platelet changes are hypothesized to result from irreversible calcium oxalate salt formation.
Altered intracellular electrolyte balance is proposed as the mechanism for oxalate-induced platelet distortion.