Purification and characterization of the 1q subcomponent of canine complement and its use in the 125I-C1q binding assay for detection of immune complexes. 1988

C C Wu, and R F Bey, and K I Loken
Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Minnesota, St Paul 55108.

The complement subcomponent, C1q, was isolated from serum obtained from clinically normal dogs, using a rapid 2-step process involving affinity chromatography. Yield of C1q ranged from 8 to 10 mg/L of serum. Hemolytically active C1q had 3 protein bands after sodium dodecyl sulfate polyacrylamide gel electrophoresis under reducing conditions and formed a single line of identity with rabbit anti-canine C1q. The amino acid composition of canine C1q was similar to that of human C1q and contained a high percentage of glycine. Isolated canine C1q was iodinated, and the fluid-phase binding assay was used to detect circulating immune complexes in dogs with systemic lupus erythematosus and rheumatoid arthritis.

UI MeSH Term Description Entries
D008180 Lupus Erythematosus, Systemic A chronic, relapsing, inflammatory, and often febrile multisystemic disorder of connective tissue, characterized principally by involvement of the skin, joints, kidneys, and serosal membranes. It is of unknown etiology, but is thought to represent a failure of the regulatory mechanisms of the autoimmune system. The disease is marked by a wide range of system dysfunctions, an elevated erythrocyte sedimentation rate, and the formation of LE cells in the blood or bone marrow. Libman-Sacks Disease,Lupus Erythematosus Disseminatus,Systemic Lupus Erythematosus,Disease, Libman-Sacks,Libman Sacks Disease
D002846 Chromatography, Affinity A chromatographic technique that utilizes the ability of biological molecules, often ANTIBODIES, to bind to certain ligands specifically and reversibly. It is used in protein biochemistry. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) Chromatography, Bioaffinity,Immunochromatography,Affinity Chromatography,Bioaffinity Chromatography
D003166 Complement Activating Enzymes Enzymes that activate one or more COMPLEMENT PROTEINS in the complement system leading to the formation of the COMPLEMENT MEMBRANE ATTACK COMPLEX, an important response in host defense. They are enzymes in the various COMPLEMENT ACTIVATION pathways. Activating Enzymes, Complement,Enzymes, Complement Activating
D003172 Complement C1 The first complement component to act in the activation of CLASSICAL COMPLEMENT PATHWAY. It is a calcium-dependent trimolecular complex made up of three subcomponents: COMPLEMENT C1Q; COMPLEMENT C1R; and COMPLEMENT C1S at 1:2:2 ratios. When the intact C1 binds to at least two antibodies (involving C1q), C1r and C1s are sequentially activated, leading to subsequent steps in the cascade of COMPLEMENT ACTIVATION. C1 Complement,Complement 1,Complement Component 1,C1, Complement,Complement, C1,Component 1, Complement
D004283 Dog Diseases Diseases of the domestic dog (Canis familiaris). This term does not include diseases of wild dogs, WOLVES; FOXES; and other Canidae for which the heading CARNIVORA is used. Canine Diseases,Canine Disease,Disease, Canine,Disease, Dog,Diseases, Canine,Diseases, Dog,Dog Disease
D004285 Dogs The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065) Canis familiaris,Dog
D004591 Electrophoresis, Polyacrylamide Gel Electrophoresis in which a polyacrylamide gel is used as the diffusion medium. Polyacrylamide Gel Electrophoresis,SDS-PAGE,Sodium Dodecyl Sulfate-PAGE,Gel Electrophoresis, Polyacrylamide,SDS PAGE,Sodium Dodecyl Sulfate PAGE,Sodium Dodecyl Sulfate-PAGEs
D005779 Immunodiffusion Technique involving the diffusion of antigen or antibody through a semisolid medium, usually agar or agarose gel, with the result being a precipitin reaction. Gel Diffusion Tests,Diffusion Test, Gel,Diffusion Tests, Gel,Gel Diffusion Test,Immunodiffusions,Test, Gel Diffusion,Tests, Gel Diffusion
D006462 Hemolytic Plaque Technique A method to identify and enumerate cells that are synthesizing ANTIBODIES against ANTIGENS or HAPTENS conjugated to sheep RED BLOOD CELLS. The sheep red blood cells surrounding cells secreting antibody are lysed by added COMPLEMENT producing a clear zone of HEMOLYSIS. (From Illustrated Dictionary of Immunology, 3rd ed) Jerne's Plaque Technique,Hemolytic Plaque Technic,Jerne's Plaque Technic,Hemolytic Plaque Technics,Hemolytic Plaque Techniques,Jerne Plaque Technic,Jerne Plaque Technique,Jernes Plaque Technic,Jernes Plaque Technique,Plaque Technic, Hemolytic,Plaque Technic, Jerne's,Plaque Technics, Hemolytic,Plaque Technique, Hemolytic,Plaque Technique, Jerne's,Plaque Techniques, Hemolytic,Technic, Hemolytic Plaque,Technic, Jerne's Plaque,Technics, Hemolytic Plaque,Technique, Hemolytic Plaque,Technique, Jerne's Plaque,Techniques, Hemolytic Plaque
D000596 Amino Acids Organic compounds that generally contain an amino (-NH2) and a carboxyl (-COOH) group. Twenty alpha-amino acids are the subunits which are polymerized to form proteins. Amino Acid,Acid, Amino,Acids, Amino

Related Publications

C C Wu, and R F Bey, and K I Loken
January 1981, Methods in enzymology,
C C Wu, and R F Bey, and K I Loken
January 1981, Methods in enzymology,
C C Wu, and R F Bey, and K I Loken
January 1979, Journal of immunological methods,
C C Wu, and R F Bey, and K I Loken
January 1988, Clinical immunology and immunopathology,
C C Wu, and R F Bey, and K I Loken
April 1984, Molecular immunology,
C C Wu, and R F Bey, and K I Loken
February 1979, The Biochemical journal,
C C Wu, and R F Bey, and K I Loken
February 1981, The Biochemical journal,
C C Wu, and R F Bey, and K I Loken
June 1984, Journal of clinical & laboratory immunology,
C C Wu, and R F Bey, and K I Loken
January 2013, Fish & shellfish immunology,
Copied contents to your clipboard!