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Antitumor effect of methionine‐depleting total parenteral nutrition with doxorubicin administration on yoshida sarcoma‐bearing rats
Author(s) -
Goseki Narihide,
Yamazaki Sigeru,
Endo Mitsuo,
Onodera Tokio,
Kosaki Goro,
Hibino Yutaka,
Kuwahata Tokuo
Publication year - 1992
Publication title -
cancer
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.052
H-Index - 304
eISSN - 1097-0142
pISSN - 0008-543X
DOI - 10.1002/1097-0142(19920401)69:7<1865::aid-cncr2820690732>3.0.co;2-m
Subject(s) - medicine , parenteral nutrition , sarcoma , doxorubicin , methionine , administration (probate law) , pharmacology , cancer research , chemotherapy , pathology , biochemistry , amino acid , chemistry , political science , law
Methionine‐depleting total parenteral nutrition (methionine‐depleting TPN), which infuses an amino acid solution devoid of L‐methionine and L‐cysteine as the sole protein source, showed enhancement of the effect of several anti‐cancer agents. In this study, the combined effect of the methionine‐depleting TPN with the administration of doxorubicin was examined in Yoshida sarcoma (YS)‐bearing rats with regard to effects on the primary tumor growth, the extension of metastasis, and the host animal's life span. In the first experiment, immediately after receiving methionine‐depleting TPN for 8 days, the animals were killed. Pathologic findings evaluated tumor growth in the implanted site and extension of the metastasis. In the second experiment, the survival period was determined after animals received methionine‐depleting TPN for 10 days, with subsequent oral feeding until they died naturally. Proliferation of YS was markedly suppressed. In particular, hematogenous metastasis, which is a characteristic of YS, was suppressed, and a longer survival period (42.7 ± 15.6 days, mean ± SD) was attained in rats in the group treated with the methionine‐depleting TPN combined with the administration of doxorubicin.