Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
PROCESSING OF C5A BY HUMAN POLYMORPHONUCLEAR LEUKOCYTES
Autore:
HETLAND G; PFEIFER PH; HUGLI TE;
Indirizzi:
SCRIPPS CLIN & RES INST,DEPT IMMUNOL IMM 18,10550 N TORREY PINES RD LA JOLLA CA 92037 SCRIPPS CLIN & RES INST,DEPT IMMUNOL IMM 18 LA JOLLA CA 92037
Titolo Testata:
Journal of leukocyte biology
fascicolo: 4, volume: 63, anno: 1998,
pagine: 456 - 462
SICI:
0741-5400(1998)63:4<456:POCBHP>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHEMOTACTIC FACTORS; HUMAN-NEUTROPHILS; RECEPTOR; ANAPHYLATOXIN; ACTIVATION; C3A; RESPONSIVENESS; DEGRADATION; EXPRESSION; ANTIBODIES;
Keywords:
COMPLEMENT ACTIVATION PRODUCT; NEUTROPHILS; METABOLISM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
37
Recensione:
Indirizzi per estratti:
Citazione:
G. Hetland et al., "PROCESSING OF C5A BY HUMAN POLYMORPHONUCLEAR LEUKOCYTES", Journal of leukocyte biology, 63(4), 1998, pp. 456-462

Abstract

Uptake of human C5a by neutrophils was monitored in vitro using both I-125-labeled and unlabeled C5a. The Ligand was internalized by the cells in a dose-dependent manner and maximal binding/uptake was observedafter 5 min of incubation. Neutrophils were incubated with labeled C5a and the cytosol and supernatant were analyzed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and autoradiography, C5a degradation products were primarily observed in the supernatant, whereas most df the protein remained intact in the cytosol even after 60 min of incubation. Cytosol from neutrophils incubated for 20 min with unlabeled C5a was examined by radioimmunoassay and found to contain antigenically intact C5a and retained the ability to induce a neutrophil (shape change) response. The functional activity of C5a recovered from the cytosol was inhibited by antibodies to either C5a or the C5a receptor (CD88). This data supports our hypothesis that although C5a is internalized it remains antigenically intact and functionally active inside thecell and is primarily degraded extracellularly.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/01/21 alle ore 02:45:20