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- W1554915832 abstract "This study was undertaken to determine the effect of local hyperthermia on the tissue distribution of a chimeric human/mouse IgG2 monoclonal antibody, 81C6, reactive with the extracellular matrix protein tenascin, which is expressed at high levels in gliomas, carcinomas of the breast and prostate, and other neoplasms. The D-54 MG s.c. glioma xenograft was treated with hyperthermia by immersion of the tumor-bearing leg in a circulating water bath. By 4 h after injection (immediately after heating), administration of chimeric 125I-labeled 81C6 (ch81C6) concomitantly with a 4-h local hyperthermia treatment at 41.8 degreesC resulted in an increase in tumor uptake of monoclonal antibody from a median of 12% of injected dose/g of tumor in normothermic mice to 42% of injected dose/g in mice receiving local hyperthermia. The increased level of uptake persisted in the heated tumors over the first 48 h and at 96 h. Additionally, heating increased the tumor:blood ratio of ch81C6 more than 7-fold at 4 h postinjection. The rate of uptake was also dramatically improved, with 60 and 90% of the maximum level of uptake achieved by 4 and 24 h, respectively, in the hyperthermia-treated mice, whereas the normothermic mice reached only 31 and 69% of their maximum uptake at those time points. In summary, local hyperthermia enhanced the absolute level and the rate of tumor uptake as well as tumor:normal tissue ratios for ch81C6. This approach may facilitate the clinical application of radionuclides with shorter half-lives, such as 211At, for the therapy of solid malignancies." @default.
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- W1554915832 date "1997-01-01" @default.
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- W1554915832 title "Local hyperthermia improves uptake of a chimeric monoclonal antibody in a subcutaneous xenograft model." @default.
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