Effects of Newcastle disease virus infection on the binding, phagocytic, and bactericidal activities of respiratory macrophages of the turkey |
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| Authors: | M D Ficken J F Edwards J C Lay |
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| Affiliation: | Department of Veterinary Pathology, College of Veterinary Medicine, Texas A&M University, College Station 77843. |
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| Abstract: | Effects of Newcastle disease virus (NDV) infection on the binding, phagocytic, and bactericidal activities of turkey respiratory macrophages were studied. Respiratory macrophages of the turkey demonstrated the presence of immunoglobulin (Ig) G and complement receptors but lacked IgM receptors. Respiratory macrophages from NDV-infected turkeys showed little or no depression of binding of sheep erythrocyte-IgG complexes and sheep erythrocyte-IgM-complement complexes to their appropriate membrane receptors. In contrast, respiratory macrophages from NDV-infected turkeys showed significant (P less than or equal to 0.05) depression of phagocytosis of similar complexes. Bacterial killing by respiratory macrophages from NDV-infected turkeys was significantly (P less than or equal to 0.05) inhibited. |
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