Biomaterial Database

Activation of serum complement by contrast media. 1976

J H Lang, and E C Lasser, and W P Kolb

Evidence is presented for the activation of serum complement by contrast media, in vitro and in vivo. Activation as a function of concentration was measured and the increasing order of effectiveness was found to be metrizamide, iothalamate, diatrizoate, acetrizoate, iodipamide and iopanoate. This order is the same as for protein binding and enzyme inhibition. The activation mechanism for iodipamide, and by inference for the other compounds, does not involve gamma-globulin aggregation. Serial daily injections in normal dogs resulted in substantial declines in serum complement over several days. Guinea pigs which were depleted of serum complement with cobra venom factor were found to be no less sensitive to lethal doses of iodipamide than those with normal complement. Implications of these findings are discussed.

UI	MeSH Term	Description	Entries
D007458	Iodipamide	A water-soluble radiographic contrast media for cholecystography and intravenous cholangiography.	Adipiodon,Bilignost,Biligrafine,Bilipolinum,Cholografin,Endocistobil,Endographin
D007480	Iopanoic Acid	Radiopaque medium used as diagnostic aid.	Iodopanoic Acid,Cholevid,Iopagnost,Polognost,Telepaque,Acid, Iodopanoic,Acid, Iopanoic
D007483	Iothalamic Acid	A contrast medium in diagnostic radiology with properties similar to those of diatrizoic acid. It is used primarily as its sodium and meglumine (IOTHALAMATE MEGLUMINE) salts.	Iotalamic Acid,Methalamic Acid,Angio-Conray,Conray 420,Iodothalamate,Iothalamate,Iothalamic Acid, Calcium (2:1) Salt,Iothalamic Acid, Monosilver (1+) Salt,Iothalamic Acid, Monosodium Salt,Iothalamic Acid, Monosodium Salt, Dimer,Lopamidol,Sodium Iothalamate,Acid, Iotalamic,Acid, Iothalamic,Acid, Methalamic,Angio Conray,AngioConray,Iothalamate, Sodium
D008297	Male		Males
D008793	Metrizamide	A solute for density gradient centrifugation offering higher maximum solution density without the problems of increased viscosity. It is also used as a resorbable, non-ionic contrast medium.	Amipak,Amipaque
D011485	Protein Binding	The process in which substances, either endogenous or exogenous, bind to proteins, peptides, enzymes, protein precursors, or allied compounds. Specific protein-binding measures are often used as assays in diagnostic assessments.	Plasma Protein Binding Capacity,Binding, Protein
D003165	Complement System Proteins	Serum glycoproteins participating in the host defense mechanism of COMPLEMENT ACTIVATION that creates the COMPLEMENT MEMBRANE ATTACK COMPLEX. Included are glycoproteins in the various pathways of complement activation (CLASSICAL COMPLEMENT PATHWAY; ALTERNATIVE COMPLEMENT PATHWAY; and LECTIN COMPLEMENT PATHWAY).	Complement Proteins,Complement,Complement Protein,Hemolytic Complement,Complement, Hemolytic,Protein, Complement,Proteins, Complement,Proteins, Complement System
D003169	Complement Inactivator Proteins	Serum proteins that negatively regulate the cascade process of COMPLEMENT ACTIVATION. Uncontrolled complement activation and resulting cell lysis is potentially dangerous for the host. The complement system is tightly regulated by inactivators that accelerate the decay of intermediates and certain cell surface receptors.	Complement Cytolysis Inhibiting Proteins,Complement Cytolysis Inhibitor Proteins,Complement Inactivating Proteins,Serum Complement Inactivators,Complement Inactivators, Serum,Inactivating Proteins, Complement,Inactivator Proteins, Complement,Inactivators, Serum Complement,Proteins, Complement Inactivating,Proteins, Complement Inactivator
D003287	Contrast Media	Substances used to allow enhanced visualization of tissues.	Radiopaque Media,Contrast Agent,Contrast Agents,Contrast Material,Contrast Materials,Radiocontrast Agent,Radiocontrast Agents,Radiocontrast Media,Agent, Contrast,Agent, Radiocontrast,Agents, Contrast,Agents, Radiocontrast,Material, Contrast,Materials, Contrast,Media, Contrast,Media, Radiocontrast,Media, Radiopaque
D003973	Diatrizoate	A commonly used x-ray contrast medium. As DIATRIZOATE MEGLUMINE and as Diatrizoate sodium, it is used for gastrointestinal studies, angiography, and urography.	Amidotrezoate,Amidotrizoate,Benzoic acid, 3,5-bis(acetylamino)-2,4,6-triiodo-,Diatrizoate Sodium,Diatrizoic Acid,Hypaque,Hypaque 50,Sodium Diatrizoate,Sodium-Magnesium Diatrizoate,Urogranoic Acid,Urothrast,Urotrast,Diatrizoate, Sodium,Diatrizoate, Sodium-Magnesium