| immunoglobulin isotypes | The classes of immunoglobulins found in any species of animal. In man there are nine classes that migrate in five different groups in electrophoresis; they each consist of two light and two heavy protein chains, and each group has distinguishing structural and functional properties. (12 Dec 1998) |
|---|---|
| immunoglobulin joining region | Segment of light and heavy chains of mouse and human immunoglobulins where the genes for the variable region upstream join those of the constant region downstream (an important part of the antibody diversity mechanism). In the joining region of the light chain are the genes coding for amino acids 96 to 107. (12 Dec 1998) |
| immunoglobulin M | <immunology> An immunoglobulin M molecule (970 kD) is built up from five immunoglobulin G type monomers joined together, with the assistance of J chains, to form a cyclic pentamer. Immunoglobulin M binds complement and a single molecule bound to a cell surface can lyse that cell. Immunoglobulin M is usually produced first in an immune response before immunoglobulin G. The human red cell isoantibodies are immunoglobulin M antibodies. Heavy chain (mu chain) is rather larger than the heavy chains of other immunoglobulins. (30 Mar 1998) |
| immunoglobulin superfamily | <immunology> A large group of proteins with immunoglobulin like domains. most are involved with cell surface recognition events. Sequence homologyy suggests that immunoglobulins, MHC molecules, some cell adhesion molecules and cytokines receptors share close homology and thus belong to a multigene family. (30 Mar 1998) |
| immunoglobulin switch region | Site on a segment of a B-cell immunoglobulin heavy-chain gene where recombination or rearrangement can occur, expressed as isotype or allotype switching, maturation of immune response, or recombination of DNA molecules. It is found on genes encoding all five immunoglobulin heavy chains. (12 Dec 1998) |
| immunoglobulin variable region | That region of the immunoglobulin (antibody) molecule that varies in its amino acid sequence and composition, confers the antigenic specificity, and is thought to comprise the binding site for the antigen. It is located at the n-terminus of the fab fragment of the immunoglobulin. It includes hypervariable and framework regions, vh family subgroups, and the complementarity-determining region. (12 Dec 1998) |
| immunoglobulins | Any of the structurally related glycoproteins that function as antibodies. They are divided into five classes (IgA, IgD, IgE, IgG, IgM) on the basis of structure and biological activity. (12 Dec 1998) |
| immunoglobulins, alpha-chain | Heavy chains found in the fab and fc fragments of IgA and having a molecular weight of approximately 58 kD. They contain about 470 amino acid residues arranged in four domains and an oligosaccharide component bound covalently to the fc fragment. (12 Dec 1998) |
| immunoglobulins, delta-chain | Heavy chains found in the fab and fc fragments of IgD and having a molecular weight of approximately 64 kD. They contain about 500 amino acid residues arranged in four domains and an oligosaccharide component covalently bound to the fc fragment. (12 Dec 1998) |
| immunoglobulins, epsilon-chain | Heavy chains found in the fab and fc fragments of IgE and having a molecular weight of approximately 72 kD. They contain about 550 amino acid residues arranged in five domains and about three times more carbohydrate than the heavy chains of IgA, IgD, and IgG. (12 Dec 1998) |
| immunoglobulins, fab | Antigen-binding fragments composed of one entire light chain and about half of one of the heavy chains, linked to each other by disulfide bonds. Fab contains the antigen binding site which is part of the variable region of the immunoglobulin molecule. (12 Dec 1998) |
| immunoglobulins, fc | Crystallizable fragments composed of the carboxy-terminal halves of both heavy chains linked to each other by disulfide bonds. Fc fragments are responsible for the effector functions of antibodies (complement fixation, binding to cell membranes, and placental transport). (12 Dec 1998) |
| immunoglobulins, gamma-chain | Heavy chains found in the fab and fc fragments of IgG and having a molecular weight of approximately 51 kD. They contain about 450 amino acid residues arranged in four domains and an oligosaccharide component covalently bound to the fc fragment. The gamma chains of the four IgG subgroups are not identical, but resemble each other more closely than the heavy chains of a different immunoglobulin. (12 Dec 1998) |
| immunoglobulins, heavy-chain | Major components of immunoglobulin molecules. They are the larger of the two types of polypeptide chains responsible for the biological and immunological properties of the different immunoglobulins. They differ according to the class of ig from which they were isolated, contain 450 to 600 amino acid residues per chain, and have molecular weights of 51-72 kD. One ig molecule comprises two heavy and two light chains. (12 Dec 1998) |
| immunoglobulins, intravenous | Immunoglobulin preparations used in intravenous infusion, containing primarily IgG. They are used to treat a variety of diseases associated with decreased or abnormal immunoglobulin levels including paediatric aids, primary hypergammaglobulinaemia, scid, cytomegalovirus infections in transplant recipients, chronic lymphocytic leukaemia, kawasaki syndrome, infection in neonates, and idiopathic thrombocytopenic purpura. (12 Dec 1998) |
Synonyms : Heavy-Chain Immunoglobulins, Ig Heavy Chains, Immunoglobulin Heavy Chain, Immunoglobulin Heavy Chain Subgroup VH-I, Immunoglobulin Heavy Chain Subgroup VH-III, Heavy Chain Immunoglobulins, Heavy Chain, Immunoglobulin, Heavy Chains, Ig
Synonyms : Idiotype, Immunoglobulin, Immunoglobulin Idiotype
Synonyms : Antibody Classes, Immunoglobulin Classes, Classes, Antibody, Classes, Immunoglobulin, Isotypes, Immunoglobulin
Synonyms : C-Promotor-Binding Factor 1, RBP-Jkappa Protein, Recombination Binding Protein J, C Promotor Binding Factor 1, Immunoglobulin J Recombination Signal Sequence Binding Protein, RBP Jkappa Protein
Synonyms : Ig J-Peptide, Immunoglobulin J Polypeptide, Immunoglobulin J-Peptide, Ig J Peptide, Immunoglobulin J Chains, Immunoglobulin J Peptide, J Chains, Immunoglobulin, J Polypeptide, Immunoglobulin, J-Peptide, Ig, J-Peptide, Immunoglobulin
| immunosuppression |
Suppression of the body's immune system and its ability to fight infections or disease. Immunosuppression may be deliberately induced with drugs, as in preparation for bone marrow or other organ transplantation to prevent rejection of the donor tissue. It may also result from certain diseases such as AIDS or lymphoma or from anticancer drugs.
출처: www.stjude.org/glossary
|
|---|---|
| immunization |
A technique used to cause an immune response that results in resistance to a specific disease, especially an infectious disease.
출처: www.stjude.org/glossary
|
| immunoassay |
A test that uses the binding of antibodies to antigens to identify and measure certain substances. Immunoassays may be used to diagnose disease. Also, test results can provide information about a disease that may help in planning treatment (for example, when estrogen receptors are measured in breast cancer).
출처: www.stjude.org/glossary
|
| immunocompetence |
The ability to produce a normal immune response.
출처: www.stjude.org/glossary
|
| immunocompromised |
Having a weakened immune system caused by certain diseases or treatments.
출처: www.stjude.org/glossary
|