Abstract
In the present study, monoclonal gammapathy was identified in a total of 245 patients of plasma cell dyscrasias during period of 1987 to 2000. The monoclonal band was identified in serum by agar gel electrophoresis in all the cases and in urine in a few cases. Characterization of paraprotein (monoclonal immunoglobulin class and light chain type) was carried out by employing immunoelectrophoresis and/or immunofixation electrophoresis using heavy chain specific gamma, alpha, mu, delta and epsilon and light chain specific kappa (K), lambda (λ) antisera. Serum immunoglobulins Ig G, Ig A, and Ig M were estimated by immunoturbidometry. Serum urea, creatinine, uric acid, alkaline phosphatase, total proteins, albumin, calcium and phosphorus were estimated by using routine biochemical methods. Among the 245 cases, 73.1% monoclonal gammapathies were of secretory type and 7.3% were non-secretory. Monoclonal gammapathies were associated with 80.4% of multiple myeloma, 8.9% of solitary plasmacytoma, 4.1% of extra-medullary plasmacytoma, 3.3% of lymphoma and 2.9% of plasma cell leukemia. Classification of secretory monoclonal immunoglobulin revealed monoclonal immunoglobulin Ig G in 74%, Ig A 15% and Ig M in 2.9% cases.
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