期刊
CHEMICAL RESEARCH IN TOXICOLOGY
卷 26, 期 12, 页码 1884-1892出版社
AMER CHEMICAL SOC
DOI: 10.1021/tx4002622
关键词
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资金
- Institut de recherche Robert-Sauve en sante et en securite du travail (IRSST)
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- NSERC
Fullerenols C-60(OH) have therapeutic potential, but there is debate regarding their toxicity. Here, we tested the hypothesis that C-60(OH)(n) possesses a pro-inflammatory effect in vivo. Kinetic and dose-dependent experiments performed with the murine air pouch model of acute inflammation revealed that, unlike TiO2 used as a positive control in this model, C-60(OH)(n) NPs were not pro-inflammatory in CD-1, CS7BL/6, and BALB/c mice. However, after 3 h of treatment, C-60(OH)(n) NPs were found to amplify the effect of lipopolysaccharides (LPS) causing a rapid leukocyte influx in which the major cells observed are neutrophils. The use of an antibody array assay to detect different analytes simultaneously indicates that the amplification effect is, at least partially, explained by an increased local production of several cytokines/chemokines in the exudates, including the pro-inflammatory cytokine IL-6. Using an ELISA to quantify the amount of IL-6 produced into air pouch exudates, we demonstrated that C-60(OH)(n) increases the LPS-induced local production of this cytokine. Therefore, although C-60(OH)(n) NPs alone do not exert proinflammatory activity under certain conditions, they can act in concert with other agents to cause inflammation, a situation that is likely to occur in vivo.
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