Decay accelerating factor (DAF) as the host antigen with protective activity to complement killing of schistosomula
Mem. Inst. Oswaldo Cruz
;
82(supl.4): 213-216, 1987.
Artigo
em Inglês
| LILACS
| ID: lil-623692
ABSTRACT
The acquisition of host antigens by Schistosoma mansoni was studied by evaluating the resistance of schistosomula to the complement attack mediated by lethal antibody. Schistosomula cultured for 24 hours with intact human erythrocytes (N-HuE) or ghosts of any type of ABO or Rh blood group, showed a marked resistance to complement damage. Sheep red blood cells, pronase-treated N-HuE or erythrocytes from patients with paroxysmal nocturnal hemoglobinuria, which are complement-sensitive cells, were unable to protect schistosomula. Schistosomula protected by N-HuE became again susceptible to complement killing after incubation with a monoclonal antibody anti-DAF. These results indicate that, in vitro, host DAF from N-HuE can be acquired by schistosomula surface in a biological active form that protects the parasite from the complement lesion.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Schistosoma mansoni
/
Esquistossomose mansoni
/
Proteínas de Membrana
Limite:
Animais
Idioma:
Inglês
Revista:
Mem. Inst. Oswaldo Cruz
Assunto da revista:
Medicina Tropical
/
Parasitologia
Ano de publicação:
1987
Tipo de documento:
Artigo
/
Congresso e conferência
País de afiliação:
Brasil
Instituição/País de afiliação:
UFMG/BR
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