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Am. J. Trop. Med. Hyg., 37(3), 1987, pp. 534-540
Copyright © 1987 by The American Society of Tropical Medicine and Hygiene

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Interactions between Chronic Murine Trypanosoma cruzi Infection and Pregnancy: Fetal Growth Retardation

Yves Carlier*, Maria Teresa Rivera*, Carine Truyens*, Françoise Puissant{dagger} AND Jean Milaire{ddagger}
Laboratoires de
* Parasitologie et
{ddagger} d'Anatomie et d'Embryologie Humaines, Faculté de Médecine, Université Libre de Bruxelles
{dagger} Service de Gynécologie-Obstétrique, Hôpital St. Pierre, Bruxelles, Belgique

Fetal growth, reproductive capacity, and parasitemia were studied in three groups of BALB/c mice: pregnant and chronically infected with Trypanosoma cruzi, non-pregnant but similarly infected, and pregnant but noninfected. The pregnant mice were killed on day 17 of pregnancy.

Comparisons of the two pregnant groups showed significant differences in fetal weights and x 18 magnified ossification lengths of radius and cubitus, whereas placental weights were not modified. The results indicate that intrauterine growth retardation occurs during chronic murine T. cruzi infection. No difference was noted between the reproductive capacities of the two pregnant groups. Parasitemias were similar in infected pregnant and control groups. Mice of all groups survived infection until killing. Pregnancy, therefore, does not influence chronic murine T. cruzi infection.

Parasites were never found in fetal blood, indicating a very low, if any, frequency of transplacental transmission of parasite during the chronic phase of infection.

Accepted for publication May 7, 1987.






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Copyright © 1987 by the American Society of Tropical Medicine and Hygiene.