Publications by authors named "Peter W Christopherson"

Article Synopsis
  • Immune thrombocytopenia (ITP) is a prevalent acquired disorder affecting the blood clotting process primarily in dogs and less frequently in cats, leading to significant health risks in both species.
  • ITP can be classified into primary (autoimmune) and secondary (triggered by other diseases), but there is a lack of systematic evaluation regarding which underlying conditions trigger secondary ITP.
  • A comprehensive study developed guidelines through a structured review of literature, expert input, and consensus-building processes to create diagnostic algorithms and screening recommendations for ITP in dogs and cats.
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Background: Acidemia in sick or injured horses is often due to lactic acid accumulation. Alterations in platelet function and hemostasis are among numerous deleterious effects caused by decreased physiologic pH.

Objectives: We aimed to evaluate the effect of hyperlactatemia and resultant acidemia on platelet aggregation in equine whole blood using impedance aggregometry.

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Article Synopsis
  • GM1 gangliosidosis is a deadly neurodegenerative disease affecting people of all ages, and new gene therapy in animal models shows promise for future human trials.
  • A study developed a set of biomarkers from various body fluids and imaging techniques that reveal significant changes in GM1 patients and treated cats, indicating the therapy's effectiveness.
  • Results showed improved brain function and structure in GM1 cats after gene therapy, supporting the potential for human clinical trials, with the new biomarkers being critical for measuring treatment outcomes.
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An EDTA-anticoagulated blood sample collected from a 1.5-year-old, intact male, English Bulldog was submitted for a CBC. The CBC data and blood smear evaluation revealed borderline high hematocrit (54%, reference interval 37-55%), inappropriate rubricytosis, moderate leukopenia due to both mature neutropenia and lymphopenia, and mild thrombocytopenia.

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A 9-month-old male Great Dane had progressive generalized nodular dermatopathy for several months. There were > 100 raised, alopecic, firm, painful nodules throughout the skin. Aspirates from several lesions yielded moderate numbers of irregularly round or polygonal to spindle-shaped cells with mild to moderate anisocytosis and few inflammatory cells, and the cytologic interpretation was proliferation of mesenchymal or histiocytic cells.

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