Treatment of cultured renal glomerular mesangial cells (MC) with nonlytic concentrations of the purified components (C5b-9) of the terminal membrane attack complex (MAC) of complement induced significant functional alterations characteristic of cellular activation. C5b-9-treated MC released large quantities of primarily vasodilatory prostaglandins. In addition, the secretion of an MC-derived auto-growth factor (MC interleukin 1) was greatly enhanced. Examination of the action of C5b-9 on MC phospholipid metabolism indicated that complement induced the activation of phospholipases, leading to quantitative changes in the fatty acid profile of MC membrane phospholipids. These findings demonstrate that cultured MC are highly responsive to nonlytic concentrations of the C5b-9 complex, and suggest that the mesangial deposition of the MAC in many forms of glomerular disease, with resultant cellular activation, may play a major role in the hemodynamic and cellular proliferative events characteristic of these disorders.
Activation of glomerular mesangial cells by the terminal membrane attack complex of complement.
D. Lovett,G. Haensch,M. Goppelt,K. Resch,D. Gemsa
Published 1987 in Journal of Immunology
ABSTRACT
PUBLICATION RECORD
- Publication year
1987
- Venue
Journal of Immunology
- Publication date
1987-04-15
- Fields of study
Biology, Medicine
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
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