Anticancer drug screening test with LDH in nude mouse bearing bone and soft part sarcoma

Abstract
With the use of human LDH as a marker, growth and remission of four human osteosarcomas (KOS-1, KOS-2, KOS-3, OST) and a malignant fibrous histiocytoma (KMF) transplanted into nude mice were monitored during chemotherapies (Adriamycin [doxorubicin], cisplatin, mitomycin C, cyclophosphamide and vincristine). Four osteosarcomas were effectively treated with Adriamycin and cisplatin, and KMF was treated with Adriamycin, cisplatin, and mitomycin C. Changes in human LDH levels paralleled changes in tumor size and these could be used to predict the death of the animals due to tumor (P < 0.01). Furthermore, the enzyme increased transiently after administration of the effective drugs.