Immunofixation compared with immunoelectrophoresis for the routine characterization of paraprotein disorders. 1987

S K Gerard, and K H Chen, and H Khayam-Bashi

The authors prospectively compared immunofixation electrophoresis (IFE) with immunoelectrophoresis (IEP) for the evaluation of paraproteins in 32 patient specimens. They used a simple modification of their existing agarose protein electrophoresis system for IFE. Thirteen specimens (40%) required IFE for paraprotein identification, 18 (56%) were definitive by either method, and 1 (3%) did not show a paraprotein by either method. Low titer and/or avidity with anti-lambda antibody from three of seven suppliers prevented or complicated interpretation of IEP patterns with two of four known lambda paraprotein-containing specimens but had no such effect with IFE. In view of these and various additional technical considerations, the authors suggest IFE for the routine characterization of paraproteins in the serum or urine.

UI MeSH Term Description Entries
D007122 Immunoelectrophoresis A technique that combines protein electrophoresis and double immunodiffusion. In this procedure proteins are first separated by gel electrophoresis (usually agarose), then made visible by immunodiffusion of specific antibodies. A distinct elliptical precipitin arc results for each protein detectable by the antisera.
D010265 Paraproteinemias A group of related diseases characterized by an unbalanced or disproportionate proliferation of immunoglobulin-producing cells, usually from a single clone. These cells frequently secrete a structurally homogeneous immunoglobulin (M-component) and/or an abnormal immunoglobulin. Gammapathy, Monoclonal,Gammopathy, Monoclonal,Monoclonal Gammopathies,Paraimmunoglobulinemia,Paraimmunoglobulinemias,Paraproteinemia,Plasma Cell Dyscrasias,Monoclonal Gammapathies,Monoclonal Gammopathy,Cell Dyscrasia, Plasma,Dyscrasia, Plasma Cell,Monoclonal Gammapathy,Plasma Cell Dyscrasia
D010266 Paraproteins Abnormal immunoglobulins synthesized by atypical cells of the MONONUCLEAR PHAGOCYTE SYSTEM. Paraproteins containing only light chains lead to Bence Jones paraproteinemia, while the presence of only atypical heavy chains leads to heavy chain disease. Most of the paraproteins show themselves as an M-component (monoclonal gammopathy) in electrophoresis. Diclonal and polyclonal paraproteins are much less frequently encountered. Paraprotein
D001797 Blood Protein Electrophoresis Electrophoresis applied to BLOOD PROTEINS. Hemoglobin Electrophoresis,Electrophoresis, Blood Protein,Electrophoresis, Hemoglobin,Protein Electrophoresis, Blood
D005374 Filtration A process of separating particulate matter from a fluid, such as air or a liquid, by passing the fluid carrier through a medium that will not pass the particulates. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) Filtrations
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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