Prothrombotic and Inflammatory Effects of Intravenous Administration of Human Immunoglobulin G in Dogs |
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Authors: | R Tsuchiya Y Akutsu A Ikegami MA Scott S Neo T Ishikawa M Hisasue T Yamada |
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Institution: | Laboratory of Internal Medicine II, School of Veterinary Medicine, Azabu University, Kanagawa, Japan;and;Department of Pathobiology and Diagnostic Investigation, G347 Veterinary Medical Center, Michigan State University, East Lansing, MI. |
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Abstract: | Background: Intravenous administration of human immunoglobulin G (hIVIgG) has been suggested to potentiate thromboembolism in dogs, but supportive scientific reports are lacking. Objectives: To determine if hIVIgG therapy promotes hypercoagulability and inflammation in dogs. Animals: Twelve healthy Beagle dogs. Methods: Prospective, experimental trial. An hIVIgG/saline solution was infused IV at 1 g/kg BW over 8 hours to 6 dogs, and physiological saline was infused to the other 6 dogs. Blood samples were drawn before, during, and after infusion for serial measurement of indicators of coagulation and inflammation. Data were analyzed by 2-way repeated measures analysis of variance. Results: Dogs administered hIVIgG developed mildly decreased blood platelet concentrations without thrombocytopenia (median, 200 × 103/μL; range, 150–302 × 103/μL; P < .01), leukopenia (median, 3.5 × 103/μL; range, 20–62 × 103/μL; P < .001), and mildly increased plasma total protein concentrations (median, 6.3 g/dL; range, 5.6–6.7 g/dL; P < .001). Administration of hIVIgG was also associated with increases in fibrin/fibrinogen degradation products in all dogs (either 5 μg/mL or 10 μg/dL), thrombin-antithrombin III complexes (median, 7.2 ng/mL; range, 4.9–14.2 ng/mL; P < .001), and C-reactive protein concentrations (median, 2.5 mg/dL; range, 0.5–4.3 mg/dL; P < .01). Conclusion and Clinical Importance: Administration of hIVIgG to dogs promotes hypercoagulability and an inflammatory state. This should be further evaluated and considered when using hIVIgG in dogs with IMHA or other prothrombotic conditions. |
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Keywords: | Adverse effect Coagulation Hypercoagulability Immunoglobulin |
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