Interaction of secretory immunoglobulin A antibodies with Naegleria fowleri trophozoites and collagen type I. 2003

Mineko Shibayama, and José de Jesús Serrano-Luna, and Saúl Rojas-Hernández, and Rafael Campos-Rodríguez, and Victor Tsutsumi
Departamento de Patología Experimental, Cinvestav-IPN, Av. IPN No. 2508, Zacatenco, CP 07360, México, DF. mineko@mail.cinvestav.mx

In this work, we analyzed the in vitro interaction of human secretory immunoglobulin A (sIgA) antibodies with Naegleria fowleri trophozoites and the capacity of these antibodies to inhibit amoeba adherence to collagen type I. We also studied N. fowleri antigens that are recognized by sIgA, using immunoblot assays. Immunocytochemical analysis of the interaction showed a redistribution of antigens on the surface of trophozoites by sIgA antibodies. Ultrastructural analysis of antibody-amoeba interaction showed that besides the patching and cap formation, parasites were capable of eliminating the antigen-antibody complex produced on the surface. sIgA antibodies were capable of inhibiting the in vitro adhesion of trophozoites to collagen type I. We suggest that nonsymptomatic infections by N. fowleri may stimulate a local specific immunity that prevents trophozoite adhesion and invasion of nasal mucosa.

UI MeSH Term Description Entries
D007071 Immunoglobulin A, Secretory The principle immunoglobulin in exocrine secretions such as milk, respiratory and intestinal mucin, saliva and tears. The complete molecule (around 400 kD) is composed of two four-chain units of IMMUNOGLOBULIN A, one SECRETORY COMPONENT and one J chain (IMMUNOGLOBULIN J-CHAINS). Colostral IgA,IgA, Exocrine,IgA, Secretory,SIgA,Secretory IgA,Secretory Immunoglobulin A,Exocrine IgA,IgA, Colostral
D007074 Immunoglobulin G The major immunoglobulin isotype class in normal human serum. There are several isotype subclasses of IgG, for example, IgG1, IgG2A, and IgG2B. Gamma Globulin, 7S,IgG,IgG Antibody,Allerglobuline,IgG(T),IgG1,IgG2,IgG2A,IgG2B,IgG3,IgG4,Immunoglobulin GT,Polyglobin,7S Gamma Globulin,Antibody, IgG,GT, Immunoglobulin
D007104 Immune Adherence Reaction A method for the detection of very small quantities of antibody in which the antigen-antibody-complement complex adheres to indicator cells, usually primate erythrocytes or nonprimate blood platelets. The reaction is dependent on the number of bound C3 molecules on the C3b receptor sites of the indicator cell. Adherence Reaction, Immune,Adherence Reactions, Immune,Immune Adherence Reactions,Reaction, Immune Adherence,Reactions, Immune Adherence
D008018 Life Cycle Stages The continuous sequence of changes undergone by living organisms during the post-embryonic developmental process, such as metamorphosis in insects and amphibians. This includes the developmental stages of apicomplexans such as the malarial parasite, PLASMODIUM FALCIPARUM. Life Cycle,Life History Stages,Cycle, Life,Cycles, Life,History Stage, Life,History Stages, Life,Life Cycle Stage,Life Cycles,Life History Stage,Stage, Life Cycle,Stage, Life History,Stages, Life Cycle,Stages, Life History
D008807 Mice, Inbred BALB C An inbred strain of mouse that is widely used in IMMUNOLOGY studies and cancer research. BALB C Mice, Inbred,BALB C Mouse, Inbred,Inbred BALB C Mice,Inbred BALB C Mouse,Mice, BALB C,Mouse, BALB C,Mouse, Inbred BALB C,BALB C Mice,BALB C Mouse
D011817 Rabbits A burrowing plant-eating mammal with hind limbs that are longer than its fore limbs. It belongs to the family Leporidae of the order Lagomorpha, and in contrast to hares, possesses 22 instead of 24 pairs of chromosomes. Belgian Hare,New Zealand Rabbit,New Zealand Rabbits,New Zealand White Rabbit,Rabbit,Rabbit, Domestic,Chinchilla Rabbits,NZW Rabbits,New Zealand White Rabbits,Oryctolagus cuniculus,Chinchilla Rabbit,Domestic Rabbit,Domestic Rabbits,Hare, Belgian,NZW Rabbit,Rabbit, Chinchilla,Rabbit, NZW,Rabbit, New Zealand,Rabbits, Chinchilla,Rabbits, Domestic,Rabbits, NZW,Rabbits, New Zealand,Zealand Rabbit, New,Zealand Rabbits, New,cuniculus, Oryctolagus
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000562 Amebiasis Infection with any of various amebae. It is an asymptomatic carrier state in most individuals, but diseases ranging from chronic, mild diarrhea to fulminant dysentery may occur. Abscess, Amebic,Acanthamebiasis,Ameboma,Amoebiasis,Iodamoebiasis,Acanthamoeba Infection,Balamuthia Infection,Abscesses, Amebic,Acanthamebiases,Acanthamoeba Infections,Amebiases,Amebic Abscess,Amebic Abscesses,Amoebiases,Balamuthia Infections,Infection, Acanthamoeba,Infection, Balamuthia,Iodamoebiases
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D000913 Antibodies, Protozoan Immunoglobulins produced in a response to PROTOZOAN ANTIGENS. Protozoan Antibodies

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