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Effects of heavy metal ions on selected oxidative metabolic processes in rat alveolar macrophages.

Authors
Castranova-V; Bowman-L; Reasoner-MJ; Miles-PR
Source
Toxicol Appl Pharmacol 1980 Mar; 53(1):14-23
NIOSHTIC No.
00095108
Abstract
The effects of four heavy metal cations, cadmium 2+ (22537480), mercury 2+ (14302875), nickel 2+ (14701225), and lead 2+ (14280503), on some of the oxidative metabolic events in rat alveolar macrophages were studied. The metals used in the experiments were added to macrophage suspensions as either chloride or acetate salts. Oxygen consumption, glucose metabolism, and the release of active oxygen species were measured in macrophage suspensions at rest and during phagocytosis. All four heavy metals depressed the oxygen consumption and glucose metabolism which occurred in alveolar macrophages at rest by about 60 to 95 percent. During phagocytosis there was release of reactive forms of oxygen from the cells, a two to threefold increase in oxygen consumption, but no change in glucose metabolism from that which occurred in resting cells. Release of active oxygen from the cells and oxygen consumption during phagocytosis were inhibited 75-85% by the metals. The authors conclude that heavy metals inhibit oxidative metabolic processes in alveolar macrophages and, thus, may diminish the antibacterial activity of these cells.
Keywords
NIOSH-Author; Metallic-poisons; Oxidative-metabolism; Metabolic-effects; Laboratory-animals; Metallic-salts; Cellular-reactions; Chemical-reactions; Heavy-metals; Air-contaminants; Antibacterial-agents
CODEN
TXAPA9
CAS No.
22537-48-0; 14302-87-5; 14701-22-5; 14280-50-3
Publication Date
19800301
Document Type
Journal Article
Fiscal Year
1980
NTIS Accession No.
NTIS Price
Issue of Publication
1
ISSN
0041-008X
NIOSH Division
ALOSH
Source Name
Toxicology and Applied Pharmacology
State
WV
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