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  2. Serum free light-chain measurement - Wikipedia

    en.wikipedia.org/wiki/Serum_free_light-chain...

    There are approximately twice as many kappa-producing plasma cells as lambda plasma cells. Kappa free-light chains are normally monomeric, while lambda free-light chains tend to be dimeric, joined by disulphide bonds. Polymeric forms of both types of free light chain can also occur. [6]

  3. Immunoglobulin light chain - Wikipedia

    en.wikipedia.org/wiki/Immunoglobulin_light_chain

    Once set, light chain class remains fixed for the life of the B lymphocyte. In a healthy individual, the total kappa-to-lambda ratio is roughly 2:1 in serum (measuring intact whole antibodies) or 1:1.5 if measuring free light chains, with a highly divergent ratio indicative of neoplasm. The free light chain ratio ranges from 0.26 to 1.65. [1]

  4. Organization and expression of immunoglobulin genes

    en.wikipedia.org/wiki/Organization_and...

    The variable region of light is therefore encoded by the rearrangement of VJ segments. The light chain can be either kappa,κ or lambda,λ. This process takes place at the level of mRNAs processing. Random rearrangements and recombinations of the gene segments at DNA level to form one kappa or lambda light chain occurs in an orderly fashion.

  5. Plasma cell dyscrasias - Wikipedia

    en.wikipedia.org/wiki/Plasma_cell_dyscrasias

    Light chain MGUS is defined as a disorder in which a serum κ to λ free light chain ratio falls outside the normal range of 0.26–1.65 (mean =0.9) provided that it is not associated with: a) any of the CRAB criteria, b) a bone marrow plasma cell count of 10 or a higher percentage of nucleated cells, c) evidence of amyloid deposition (see ...

  6. Bence Jones protein - Wikipedia

    en.wikipedia.org/wiki/Bence_Jones_protein

    More recently, serum free light chain assays have been utilised in a number of published studies which have indicated superiority over the urine tests, particularly for patients producing low levels of monoclonal free light chains, as seen in nonsecretory multiple myeloma [5] [6] [7] and amyloid light chain amyloidosis (AL amyloidosis). [7] [8 ...

  7. Myeloma protein - Wikipedia

    en.wikipedia.org/wiki/Myeloma_protein

    Serum protein electrophoresis showing a paraprotein (spike/peak in the gamma zone) in a patient with multiple myeloma.. A myeloma protein is an abnormal antibody (immunoglobulin) or (more often) a fragment thereof, such as an immunoglobulin light chain, that is produced in excess by an abnormal monoclonal proliferation of plasma cells, typically in multiple myeloma or Monoclonal gammopathy of ...

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  9. Nephelometry (medicine) - Wikipedia

    en.wikipedia.org/wiki/Nephelometry_(medicine)

    It is important in quantification of free light chains in diseases such as multiple myeloma. Quantification is important for disease classification and for disease monitoring once a patient has been treated (increased skewing of the ratio between kappa and lambda light chains after a patient has been treated is an indication of disease recurrence).