Antibody-dependent cytotoxicity to transitional cells in cystitis cystica

Serum from 20 children with urinary tract infections and proved cystitis cystica has been examined for antibody to a panel of established cell lines derived from normal urothelium and transitional cell carcinomas of the bladder. Antibody-dependent cytotoxicity was measured with serial dilutions of patient serum and lymphocytes from normal healthy adults as effector cells. The reaction was quantitated by the release of 51chromium from labeled target cells. The patients were grouped according to the duration of symptoms, the presence or absence of reflux, and the presence or absence of upper tract changes or scarring. No differences between test and control subjects were detected.