Lipids of alveolar macrophages, polymorphonuclear leukocytes, and their phagocytic vesicles
AUTOR(ES)
Mason, Robert J.
RESUMO
Phagocytic vesicles were isolated from rabbit alveolar macrophages and guinea pig polymorphonuclear leukocytes that had ingested emulsified paraffin oil. Phospholipids and their fatty acids were determined in whole cells and in the phagocytic vesicle and pellet fractions separated from them. The cholesterol-to-phospholipid ratios in the vesicle fractions were distinctly higher than those of the respective whole cells or pellet fractions. The vesicle fractions also had higher phospholipid-to-protein ratios than did the whole cells. The phospholipids of the phagocytic vesicle fraction from macrophages contained relatively more sphingomyelin, lyso-(bis)phosphatidic acid, and phosphatidylserine and less lecithin, phosphatidylethanolamine, and phosphatidylinositol than did the whole cells or pellet fractions. The phospholipids of phagocytic vesicles from polymorphonuclear leukocytes contained significantly more phosphatidylinositol than did the pellet fractions. Lyso(bis)phosphatidic acid, which constituted 15% of the phospholipid in rabbit alveolar macrophages and 25% of that in their phagocytic vesicles, contained almost 60% oleic acid and 20% linoleic acid. This lipid was not detected in rabbit peritoneal macrophages or in rat alveolar macrophages.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=292407Documentos Relacionados
- Influence of cadmium on the phagocytic and microbicidal activity of murine peritoneal macrophages, pulmonary alveolar macrophages, and polymorphonuclear neutrophils.
- Isolation and Properties of Phagocytic Vesicles from Polymorphonuclear Leukocytes
- Isolation and Properties of Phagocytic Vesicles II. ALVEOLAR MACROPHAGES
- Human fibronectin binding to staphylococcal surface protein and its relative inefficiency in promoting phagocytosis by human polymorphonuclear leukocytes, monocytes, and alveolar macrophages.
- Effect of Calcium on Superoxide Production by Phagocytic Vesicles from Rabbit Alveolar Macrophages