Assuntos
Grupos de População Animal , Animais Selvagens , Tatus , Hanseníase/veterinária , Xenarthra , Animais , MéxicoRESUMO
Eight of twenty armadillos (Dasypus novemcinctus L.) developed severe lepromatous leprosy 3 to 3.5 years after inoculation with viable Mycobacterium leprae. A total of 988 grams of lepromas containing an estimated 15 to 20 grams of leprosy bacilli has been harvested from these animals. The large amounts of material now available will permit in-depth studies of the biochemistry and metabolism of the leprosy bacillus, and the animal model should make possible definitive studies on the immunology, chemotherapy, and epidemiology of the disease.
Assuntos
Modelos Animais de Doenças , Hanseníase/etiologia , Xenarthra , Animais , Humanos , Hanseníase/mortalidade , Camundongos , Mycobacterium leprae/crescimento & desenvolvimento , Fatores de TempoRESUMO
The gestation period of wild armadillos in United States is believed to be 8 months, including a 3 1/2 month interval of embryonic diapause. Four animals captured in november of 1979, presumably 3 to 4 months after ovulation, proced young an average of 16 months later, indicating a gestation period of nearly 20 months. One of these animals bore 2 litters, 5 1/2 months and 17 months after capture respectively. None of these females had contact with males during captivity. The results suggest that embryonic diapause was prolonged for a year by stress of confinement, or that sperm survived for a year in the reproductive organs of the females