Effects of Nicotine on the Functions of Human Polymorphonuclear Leukocytes In Vitro
| Autor: | Tatsuichiro Sakatani, Toshio Fujikura, Sumiko Sasagawa, Kazuo Suzuki |
|---|---|
| Rok vydání: | 1985 |
| Předmět: |
Nicotine
Cell Survival Neutrophils Immunology Chemokinesis In Vitro Techniques Biology Pharmacology Exocytosis chemistry.chemical_compound Superoxides medicine Extracellular Humans Immunology and Allergy Cytochalasin Superoxide Parasympatholytics Chemotaxis Cell Biology In vitro Chemotaxis Leukocyte Parasympathomimetics chemistry Biochemistry Hexamethonium Lysosomes medicine.drug |
| Zdroj: | Journal of Leukocyte Biology. 37:493-502 |
| ISSN: | 1938-3673 0741-5400 |
| DOI: | 10.1002/jlb.37.5.493 |
| Popis: | Effects of nicotine on migration, extracellular release of lysosomal enzymes, and superoxide anion (O2) production of human polymorphonuclear leukocytes (PMN) were studied. Nicotine (5 × 10−6 to 5 × 10−4 M) had no effect on random migration, chemotaxis to fMet-Leu-Phe, nor on chemokinesis induced by fMet-Leu-Phe. Nicotine, however, inhibited both extracellular release of lysosomal enzymes from PMN and O2 production of PMN, both of which were induced by fMet-Leu-Phe and cytochalasin B. The inhibition of enzyme release and O2 production by nicotine was not affected by atropine, hexame- thonium, or acetyl β -methylcholine, suggesting a direct action of nicotine on PMN functions. It is presumed that nicotine does not affect PMN migration to inflammatory sites, but inhibits the microbicidal functions of PMN. Exposure to PMN to nicotine introduced into the body by smoking could suppress their functions. This might result in harmful influences on the host defense mechanism, including antitumor function. |
| Databáze: | OpenAIRE |
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