Biomaterial Database

Preparation of a highly purified allergen from Dirofilaria immitis. Reaginic antibody formation in mice. 1981

K Fujita, and S Tsukidate

A Dirofilaria immitis protein allergen was purified; it had a molecular weight of 15,000-20,000 and a carbohydrate content of 2%. The allergenic activity of adult Dirofilaria extracts was assayed by passive cutaneous anaphylaxis (PCA) in rats using mouse sera obtained by immunization with various fractions. The mouse-Dirofilaria system was used to study the degree of purification of allergen. The purified Dirofilaria allergen appeared as one band after sodium dodecyl sulphate polyacrylamide gel (SDS-gel) electrophoresis and one precipitin arc by immunoelectrophoresis (IEP). It was inclined to aggregate in buffered solution. The results suggested that the allergen--reagin axis was a simple single antigen-antibody interaction. Immunological responses to the purified allergen were compared among four inbred strains, two hybrid strains and two outbred strains of mice. They produced relatively high titres of reaginic antibody but did not produce detectable indirect haemagglutinating test (IHA) antibody. Among the strains tested, BALB/c was a high responder and also contained to produce the reaginic antibody for longer than the other strains.

UI	MeSH Term	Description	Entries
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
D008297	Male		Males
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
D008815	Mice, Inbred Strains	Genetically identical individuals developed from brother and sister matings which have been carried out for twenty or more generations, or by parent x offspring matings carried out with certain restrictions. All animals within an inbred strain trace back to a common ancestor in the twentieth generation.	Inbred Mouse Strains,Inbred Strain of Mice,Inbred Strain of Mouse,Inbred Strains of Mice,Mouse, Inbred Strain,Inbred Mouse Strain,Mouse Inbred Strain,Mouse Inbred Strains,Mouse Strain, Inbred,Mouse Strains, Inbred,Strain, Inbred Mouse,Strains, Inbred Mouse
D008970	Molecular Weight	The sum of the weight of all the atoms in a molecule.	Molecular Weights,Weight, Molecular,Weights, Molecular
D010323	Passive Cutaneous Anaphylaxis	An evanescent cutaneous reaction occurring when antibody is injected into a local area on the skin and antigen is subsequently injected intravenously along with a dye. The dye makes the rapidly occurring capillary dilatation and increased vascular permeability readily visible by leakage into the reaction site. PCA is a sensitive reaction for detecting very small quantities of antibodies and is also a method for studying the mechanisms of immediate hypersensitivity.	Anaphylaxis, Passive Cutaneous,PCA,Cutaneous Anaphylaxis, Passive
D011935	Reagins	Antibodies, especially IGE, that bind to tissue of the same species so that ANTIGENS induce HISTAMINE RELEASE and other vasoactive agents. HYPERSENSITIVITY is the clinical manifestation.	Homocytotropic Antibodies,Reagin
D002850	Chromatography, Gel	Chromatography on non-ionic gels without regard to the mechanism of solute discrimination.	Chromatography, Exclusion,Chromatography, Gel Permeation,Chromatography, Molecular Sieve,Gel Filtration,Gel Filtration Chromatography,Chromatography, Size Exclusion,Exclusion Chromatography,Gel Chromatography,Gel Permeation Chromatography,Molecular Sieve Chromatography,Chromatography, Gel Filtration,Exclusion Chromatography, Size,Filtration Chromatography, Gel,Filtration, Gel,Sieve Chromatography, Molecular,Size Exclusion Chromatography
D004182	Dirofilaria	A genus of filarial nematodes. Various immature species have been found to infect the eyes or subcutaneous tissue in humans.	Dirofilarias
D004306	Dose-Response Relationship, Immunologic	A specific immune response elicited by a specific dose of an immunologically active substance or cell in an organism, tissue, or cell.	Immunologic Dose-Response Relationship,Relationship, Immunologic Dose-Response,Dose Response Relationship, Immunologic,Dose-Response Relationships, Immunologic,Immunologic Dose Response Relationship,Immunologic Dose-Response Relationships,Relationship, Immunologic Dose Response,Relationships, Immunologic Dose-Response