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Clinical significance of a variant form of urinary arylsulfatase A.

A variant form of urinary arylsulfatase A which was not detected in normal voided urine was demonstrated in the urine obtained directly from the renal-pelvis [Ishibashi, T. et al.: Biochim. Biophys. Acta, 616, 218-227 (1980)]. The variant form was not observed in urine collected directly from the ureter during operations for uretero-cutaneostomy or ileal conduit. However, the urine from intubated uretero-cutaneostomy patients collected near the pelvi-ureteric junction showed the presence of the variant form, further suggesting the origin specificity of the variant. This arylsulfatase was not demonstrated in the voided urine from patients with non-urologic malignant disorders such as uterine endometrial, uterine cervical, rectal, pancreas head and gastric carcinomas, in spite of its appearance in high levels in the urine from patients with advanced bladder cancer.