PMID: 3384156Jan 1, 1988Paper

The phagocytic activity of Lumbricus terrestris leukocytes is enhanced by the vertebrate opsonins: IgG and complement C3b fragment

Developmental and Comparative Immunology
A LaulanP Chateaureynaud-Duprat

Abstract

The effect of the vertebrates opsonins: IgG and complement C3 fragments on phagocytic activity of Lumbricus terrestris leukocytes towards sheep erythrocytes was studied. Sheep erythrocytes were previously sensitized with specific IgG or IgM and coated with one of the third component fragments (C3b, C3bi, C3d) of human complement. Our results show that leukocyte phagocytosis was enhanced by vertebrate IgG and C3b complement fragments but not by IgM and fragment C3d. Because opsonization in vertebrates is related to the presence of receptors on the surface of phagocyte membrane, our results suggest that similar receptors exist on earthworm leukocyte surfaces. These new data strengthen the arguments in favour of the presence of components in Lumbricus terrestris which partially share common structures and functions with components of vertebrate humoral immune reactions.

Citations

May 12, 2001·Folia Microbiologica·M BilejA Beschin
Apr 26, 2008·Journal of Biomedical Materials Research. Part a·Susan K TamPaul de Vos
Dec 15, 2005·Zoology : Analysis of Complex Systems, ZACS·E KauschkeE L Cooper

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