title: The incidence and possible relevance of Bence-Jones protein in the sera of patients with multiple myeloma.
abstract: We present results showing that the detectable incidence of Bence-Jones protein in the sera of patients with multiple myeloma is equivalent to the highest detectable incidence of Bence-Jones protein in highly concentrated urine when tested by immuno-isoelectric focusing. In a series of 25 multiple myeloma patients, immuno-isoelectric focusing showed the incidence of Bence-Jones proteinemia to be 68% compared with a detectable incidence of Bence-Jones proteinuria of 32-64% by immunoelectrophoresis and immuno-isoelectric focusing depending upon the urine concentration factor. In view of the variability of factors governing urinary Bence-Jones protein levels, such as renal catabolism, reabsorption and losses during concentration, we suggest that monitoring of serum Bence-Jones protein by immuno-isoelectric focusing should be carried out in conjunction with measurements of urinary Bence-Jones protein in multiple myeloma.
mesh_terms: D000328:Adult; D000368:Aged; D001536:Bence Jones Protein / Q000097:blood* / Q000652:urine; D005260:Female; D006801:Humans; D007525:Isoelectric Focusing; D008297:Male; D008875:Middle Aged; D009101:Multiple Myeloma / Q000097:blood* / Q000652:urine; D009363:Neoplasm Proteins / Q000097:blood* / Q000652:urine
chemical_list: D009363:Neoplasm Proteins; D001536:Bence Jones Protein