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Richard L. Gamelli, MD; Roger S. Foster, Jr, MD

Arch Surg. 1983;118(10):1182-1185.

Abstract
• Mice were used to study the effects of protein-calorie malnutrition and its reversal on granulocyte-macrophage production and fluorouracil's toxic effect on bone marrow. An in vitro quantitative clonal culture technique for bone marrow granulocyte-macrophage progenitor cells (GM-CFC) was used. Animals on a protein-free but otherwise complete diet for ten days had a significant contraction in total marrow cellularity and GM-CFC numbers paralleling the animal's weight loss. The acute toxic effect of fluorouracil on bone marrow was not increased in protein-deprived animals. On refeeding, there was a biphasic response in the degree of toxic effect on marrow. Animals refed for one day had significantly increased fluorouracil-related marrow abnormalities. However, animals refed for four days, when marrows were repleted, were partially protected from the drug's cytotoxic effects. The increased sensitivity in mice refed for one day was related to more GM-CFC in active DNA synthesis.

(Arch Surg 1983;118:1182-1185)

Author Affiliations
From the Department of Surgery, University of Vermont, Burlington.

Footnotes
Accepted for publication March 21, 1983.

Reprint requests to Department of Surgery, Given Building, University of Vermont, Burlington, VT 05405 (Dr Gamelli).

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