Trypanosoma cruzi: experimental parasitism of bone and cartilage.
Parasitol Res
; 99(6): 663-8, 2006 Nov.
Article
em En
| MEDLINE
| ID: mdl-16721600
ABSTRACT
Trypanosoma cruzi causes Chagas' disease, a systemic infection that affects cells of meso-, endo-, and ectodermic origin. However, as far as we know, the presence of T. cruzi stages in bone has not been reported previously, and it has scarcely been investigated in cartilage. We inoculated 7- and 20-day-old (8 and 15 g) NMRI albino mice i.p. with metacyclic trypomastigotes from Rhodnius prolixus used for xenodiagnosis of mice previously infected with mammalian, human, and triatomines isolates, characterized by randomly amplified polymorphic DNA as zymodeme 1 (equivalent to T. cruzi I). Tissular parasitism (quantified according to the number of pseudocysts/50 fields 400x) showed amastigotes, intermediate forms, or trypomastigotes in sternum chondroblasts, osteoblasts, macrophages, and fibroblasts; chondrocyte and osteocyte invasion was rare. All isolates parasitized bone marrow macrophages, with few amastigotes. We observed marked associated myotropism, with or without inflammatory infiltration; there were small numbers of intensely parasitized mononuclear cells in perichondrium and periosteum. We discuss the results in relation to the marked differences of the T. cruzi tropism toward the different types of sternum cells, and, additionally, we outline the possibility of transmitting parasitized bone marrow through transplants. The fact of finding parasite stages in sternum bone and cartilage may be considered important due to the studies on Chagas' disease paleoparasitology that are based on histological and molecular analysis.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Contexto em Saúde:
3_ND
Problema de saúde:
3_chagas_disease
/
3_neglected_diseases
/
3_zoonosis
Assunto principal:
Esterno
/
Trypanosoma cruzi
/
Cartilagem
/
Doença de Chagas
Limite:
Animals
/
Humans
País/Região como assunto:
America do sul
/
Venezuela
Idioma:
En
Revista:
Parasitol Res
Assunto da revista:
PARASITOLOGIA
Ano de publicação:
2006
Tipo de documento:
Article
País de afiliação:
Venezuela