Tumor necrosis factor-alpha mediates changes in tissue protein turnover in a rat cancer cachexia model.

نویسندگان

  • P Costelli
  • N Carbó
  • L Tessitore
  • G J Bagby
  • F J Lopez-Soriano
  • J M Argilés
  • F M Baccino
چکیده

Rats bearing the Yoshida AH-130 ascites hepatoma showed enhanced fractional rates of protein degradation in gastrocnemius muscle, heart, and liver, while fractional synthesis rates were similar to those in non-tumor bearing rats. This hypercatabolic pattern was associated with marked perturbations of the hormonal homeostasis and presence of tumor necrosis factor in the circulation. The daily administration of a goat anti-murine TNF IgG to tumor-bearing rats decreased protein degradation rates in skeletal muscle, heart, and liver as compared with tumor-bearing rats receiving a nonimmune goat IgG. The anti-TNF treatment was also effective in attenuating early perturbations in insulin and corticosterone homeostasis. Although these results suggest that tumor necrosis factor plays a significant role in mediating the changes in protein turnover and hormone levels elicited by tumor growth, the inability of such treatment to prevent a reduction in body weight implies that other mediators or tumor-related events were also involved.

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عنوان ژورنال:
  • The Journal of clinical investigation

دوره 92 6  شماره 

صفحات  -

تاریخ انتشار 1993