Male Wistar rats were injected i.p. with 2 x 10(5) trypomastigotes of the Bolivia strain. Fifteen days later, few parasite nests were observed in the fibromuscular layer surrounding the seminal vesicle acini of chagasic animals and no parasites were detected in the testis and ventral prostate. A significant decrease was observed in the absolute weight and fructose content of the seminal vesicle and ventral prostate of chagasic rats, which also presented a sharp decrease in plasma testosterone levels.
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