Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz
Gewählte Publikation:
SHR Neuro Krebs Kardio Lipid Stoffw Microb
Prietl, B; Meindl, C; Roblegg, E; Pieber, TR; Lanzer, G; Fröhlich, E.
Nano-sized and micro-sized polystyrene particles affect phagocyte function.
Cell Biol Toxicol. 2014; 30(1):1-16
Doi: 10.1007/s10565-013-9265-y
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- Führende Autor*innen der Med Uni Graz
- Fröhlich Eleonore
- Prietl Barbara
- Co-Autor*innen der Med Uni Graz
- Lanzer Gerhard
- Meindl Claudia
- Pieber Thomas
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- Abstract:
- Adverse effect of nanoparticles may include impairment of phagocyte function. To identify the effect of nanoparticle size on uptake, cytotoxicity, chemotaxis, cytokine secretion, phagocytosis, oxidative burst, nitric oxide production and myeloperoxidase release, leukocytes isolated from human peripheral blood, monocytes and macrophages were studied. Carboxyl polystyrene (CPS) particles in sizes between 20 and 1,000 nm served as model particles. Twenty nanometers CPS particles were taken up passively, while larger CPS particles entered cells actively and passively. Twenty nanometers CPS were cytotoxic to all phagocytes, ≥500 nm CPS particles only to macrophages. Twenty nanometers CPS particles stimulated IL-8 secretion in human monocytes and induced oxidative burst in monocytes. Five hundred nanometers and 1,000 nm CPS particles stimulated IL-6 and IL-8 secretion in monocytes and macrophages, chemotaxis towards a chemotactic stimulus of monocytes and phagocytosis of bacteria by macrophages and provoked an oxidative burst of granulocytes. At very high concentrations, CPS particles of 20 and 500 nm stimulated myeloperoxidase release of granulocytes and nitric oxide generation in macrophages. Cytotoxic effect could contribute to some of the observed effects. In the absence of cytotoxicity, 500 and 1,000 nm CPS particles appear to influence phagocyte function to a greater extent than particles in other sizes.
- Find related publications in this database (using NLM MeSH Indexing)
- Animals -
- Cell Line -
- Cell Survival - drug effects
- Chemotaxis -
- Escherichia coli - immunology
- Granulocytes - drug effects
- Granulocytes - enzymology
- Granulocytes - immunology
- Humans -
- Interleukin-6 - metabolism
- Interleukin-8 - metabolism
- Macrophages - drug effects
- Macrophages - immunology
- Macrophages - metabolism
- Mice -
- Nanoparticles - chemistry
- Nanoparticles - toxicity
- Nitric Oxide - biosynthesis
- Particle Size -
- Peroxidase - metabolism
- Phagocytes - drug effects
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- Phagocytes - metabolism
- Phagocytosis - drug effects
- Polystyrenes - chemistry
- Polystyrenes - toxicity
- Respiratory Burst -
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- Cytotoxicity
- Nanoparticle
- Phagocytosis
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- Oxidative burst