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Effects of natural human interleukin-6 on thrombopoiesis and tumor progression in tumor-bearing mice

, : Effects of natural human interleukin-6 on thrombopoiesis and tumor progression in tumor-bearing mice. Cancer Letters. 79(1): 83-89

The growth of inoculated colon 26 adenocarcinoma (colon 26) in mice gradually increased the platelet count owing to murine IL-6 secreted from the tumor, while Lewis lung carcinoma (LLC) decreased the platelet count in the hosts, depending on the tumor growth. Natural human IL-6 injections (hIL-6), 280 mu-g/kg/day, stimulated the platelet production in both types of carcinoma-bearing mice. When the administration of mitomycin C or cisplatin decreased the platelet number as a side reaction with a concomitant of suppressing the growth of colon 26 and LLC, respectively, hIL-6 could also increase the platelet count without the augmentation of tumor growth. However, loss of carcass weight was observed in colon 26-bearing mice treated with hIL-6, suggesting the development of cachexia is associated with hIL-6 administration. Despite the possibility of inducing cachexia in some types of tumors, our results suggest that IL-6 could be a useful means of restoring the decreased platelet number in cancer patients after intensive chemotherapy.


PMID: 8187058

DOI: 10.1016/0304-3835(94)90067-1

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