Abstract:
:A glomerulopathy in hamsters bearing human epithelial tumors is described. The tumors resulted from the s.c. implantation of human heteroploid cells (MA160) derived originally from a benign prostatic adenoma. The renal immunomorphological and ultrastructural changes include expansion of mesangial matrix and cellularity, electron-dense mesangial deposits, and mesangial deposits of immunoglobulin G and C'3. Renal eluates obtained from the tumor-bearing animals contained substantial amounts of immunoglobulins. Our immunopathological studies demonstrated that virtually all of the eluate immunoglobulin G was tumor-specific antibody directed exclusively against surface determinants of the MA160 cells. There was no demonstrable activity against cytoplasmic or nuclear constituents of the MA160 cells or against certain hamster antigenic determinants. The antibody in the eluate could be removed by repetitive absorptions with viable MA160 cells but not with similar absorptions with either normal human diploid fibroblasts, human heteroploid HeLa cells, or BHK21 hamster cells. Our data support the concept of a specific nephritogenic immunopathological process occurring as a result of immunity to tumor-specific surface determinants.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Richman AV,Alexander RWsubject
Has Abstractpub_date
1979-02-01 00:00:00pages
459-64issue
2 Pt 1eissn
0008-5472issn
1538-7445journal_volume
39pub_type
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