Clinical background The finding of a monoclonal immunoglobulin in the serum defines the so-called monoclonal gammopathy. Monoclonal components are homogeneus immunoglobulins whole (intact) or fragmented, produced by a single expanded plasma cell clone. MCs present unique physicochemical homogeneity, which is reflected in their immunological homogeinity. Immunological homogeinity by electrophore...

Summary Monoclonal gammopathy of renal significance (MGRS) encompasses a group kidney disorders in which monoclonal immunoglobulin secreted by B cell or plasma clone causes damage, without meeting hematological criteria for malignancy. The underlying disorder patients with MGRS is generally consistent undetermined (MGUS). Because the wide spectrum MGRS-associated diseases, defined through locat...

CD19 is expressed on B- lineage cells and follicular dendritic cells and plays a key role in B cell malignancies and autoimmune diseases. Thus, it has been considered as potential target for several monoclonal antibodies (mAbs). For decades, chemotherapy has been known as one of the major antitumor therapies eradicating high proliferative tumor cells. But, anti- CD19 mAbs developed for treating...

Monoclonal gammopathy is increasingly recognized as a cause of kidney injury. These renal conditions behave differently than ones without monoclonal gammopathy and require specific treatment. To avoid misdiagnosis, testing for paraprotein should be performed in addition to vasculitis and autoimmune diseases serologies in adults with unexplained AKI or proteinuria. Because the prevalence of mono...

Four monoclonal antibodies from euthymic mice and two monoclonal antibodies from athymic mice were directed against antigens of Rickettsia conorii, as shown by both indirect immunofluorescence and an enzyme immunoassay. There was extensive cross-reactivity with other spotted fever group rickettsiae. Euthymic monoclonal antibodies 3-2 and 9-2 (immunoglobulin G2a [IgG2a]) and 27-10 (IgG1) distinc...

Using a novel, two-step functional screening procedure, we have isolated hybridoma B cell lines secreting monoclonal antibodies directed against gene products of the I-Jb and I-Jk subregions of the mouse H-2 complex. These monoclonal antibodies act in vitro by allowing nonresponder spleen cells to respond to normally suppressive quantities of poly(Glu50Tyr50) (GT) (WF8 series of anti-I-Jk monoc...