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  • Title: Influence of dietary protein content on Trypanosoma cruzi infection in germfree and conventional mice.
    Author: Cintra IP, Silva ME, Silva ME, Silva ME, Afonso C, Nicoli JR, Bambirra EA, Vieira EC.
    Journal: Rev Inst Med Trop Sao Paulo; 1998; 40(6):355-62. PubMed ID: 10436655.
    Abstract:
    Germfree (GF) and conventional (CV) mice were fed on diets containing 4.4, 13.2 or 26.4% of protein (weight/weight). CV mice fed on low protein diet did not gain weight during four weeks, whereas the protein deficient diet did not affect the growth of GF mice. After four weeks on these diets, the mice were inoculated with 5 x 10(3) trypomastigotes of Trypanosoma cruzi. The protein deficiency affected less the GF than the CV mice, according to the following parameters: weight gain, hemoglobin, plasma protein and albumin levels and water and protein contents of the carcass. Infection with T. cruzi produced a significant decrease in hemoglobin levels, red blood cell count, and water and protein contents in the carcass. This decrease was more pronounced in the GF mice. Histopathologically, there was no difference between the treatments in animals with the same microbiological status (GF or CV). However, the disease was more severe in the GF than in the CV mice.
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