Glycoprotein clearance is rapid and suppressed by mannan in chicken embryos
J. physiol. biochem
; 65(3): 235-241, sept. 2009.
Artigo
em Inglês
| IBECS
| ID: ibc-122868
Biblioteca responsável:
ES1.1
Localização: BNCS
RESUMEN
No disponible
ABSTRACT
Carbohydrates are thought to function as tags that mark circulatory glycoproteins for rapid clearance. Scavenger endothelial cells (SECs) play the primary role in clearing glycoproteins via receptor-mediated endocytosis in adult animals. We found that horseradish peroxidase (HRP), a glycoprotein, was removed quickly, mostly by receptor mediation from the chicken embryo circulation, but bovine serum albumin was not. The half-life of HRP in the circulation varied with the embryo stage and fell rapidly from 0.73 h at embryonic day 4 (E4) to 0.23 h at E5, with no great difference among stages after E5. HRP clearance was far slower at E3.5 than at E5, but was obviously suppressed by mannan. These results imply that the function of clearing glycoprotein or waste macromolecules from the circulation via receptor-mediated endocytosis appears early in the embryo (AU)
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Bases de dados nacionais
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Espanha
Base de dados:
IBECS
Assunto principal:
Glicoproteínas
/
Células Endoteliais
/
Endocitose
Limite:
Animais
Idioma:
Inglês
Revista:
J. physiol. biochem
Ano de publicação:
2009
Tipo de documento:
Artigo
Instituição/País de afiliação:
China Agricultural University/China