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Comparative hematology: studies on goats.

J H Lewis

    American Journal of Veterinary Research
    |May 1, 1976
    PubMed
    Summary
    This summary is machine-generated.

    Goat blood coagulation is similar to humans, but with shorter activated partial thromboplastin time and longer thrombin time. Goat platelets and erythrocytes are smaller, with altered aggregation and morphology.

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    Area of Science:

    • Comparative hematology
    • Veterinary medicine
    • Biochemistry

    Background:

    • Understanding hematologic differences between species is crucial for comparative studies.
    • Goats are increasingly used as animal models in biomedical research.

    Purpose of the Study:

    • To compare blood coagulation and hematologic parameters between goats and humans.
    • To investigate specific differences in goat platelets and erythrocytes.

    Main Methods:

    • Blood coagulation tests (activated partial thromboplastin time, thrombin time) were performed.
    • Platelet aggregation studies using epinephrine and ristocetin were conducted.
    • Scanning and transmission electron microscopy were used to examine erythrocytes and platelets.
    • Biochemical analysis of blood components was performed.

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    Main Results:

    • Goats showed shorter activated partial thromboplastin time and longer thrombin time compared to humans.
    • Platelets aggregated poorly with epinephrine and ristocetin; both platelets and erythrocytes were smaller.
    • Erythrocytes had unique shapes and increased osmotic fragility.
    • Goat platelets exhibited clear vacuoles surrounding dense bodies.
    • Elevated levels of phosphorus, chloride, sodium, alkaline phosphatase, and SGOT were observed in goats.

    Conclusions:

    • Goats possess distinct hematologic and coagulation profiles compared to humans.
    • These differences, particularly in platelets and erythrocytes, should be considered in research utilizing goats as models.
    • Further investigation into the functional implications of these variations is warranted.