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2001: Nishimura K; Araki N; Ohnishi Y; Kozaki S
Effects of dietary polyamine deficiency on Trypanosoma gambiense infection in rats.
Experimental parasitology 2001;97(2):95-101.
Nishimura, K., Araki, N., Ohnishi, Y., and Kozaki, S. 2001. Effects of dietary polyamine deficiency on Trypanosoma gambiense infection in rats. Experimental Parasitology 97, 95-101. A diet deficient in polyamines decreases the availability of dietary polyamines. We used rats infected with the Wellcome strain of Trypanosoma gambiense to examine the effects of polyamine-deficient chow (PDC) on trypanosome proliferation and symptoms of infection. Rats fed PDC showed limited increase of trypanosome and symptoms of infection and limited loss of body weight and anemia. Survival in these rats was prolonged. Before infection, the heparinized plasma concentration of spermidine in the PDC-fed rats was lower than that in control rats fed with standard chow. After infection, the content of spermidine in red blood cells increased in the control rats, but was only slightly increased in PDC-fed rats. The content of spermidine in the trypanosomes after infection was low in the PDC-fed rats. Decreases in the polyamine content of trypanosomes limited their increase. These observations suggest that a reduction in dietary polyamines may help in the regulation of trypanosome infection.

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