Title |
Upregulation of Pro-inflammatory Cytokine Expression Following Chronic Paracetamol Treatment in Astrocyte
|
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Published in |
Neurotoxicity Research, February 2018
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DOI | 10.1007/s12640-018-9875-5 |
Pubmed ID | |
Authors |
Nutnicha Tantarungsee, Waranurin Yisarakun, Thananya Thongtan, Laddawan Lalert, Sirinapa Srikam, Preecha Reuangwechvorachai, Praewphan Ingruanglert, Supang Maneesri-le Grand |
Abstract |
The present study aimed to investigate the effect of APAP treatment on the expression of pro-inflammatory cytokines in the astrocytes. The mouse astrocyte cells (C8-D1A) were treated with APAP at the concentration of 100 μM for 24 h, 16 and 28 days. The expressions of pro-inflammatory cytokines and NF-kB were determined using western blot analysis. Furthermore, the expression and localization of phosphorylation of NF-kB were detected by immunohistochemical and immunofluorescent analysis. The ultrastructure of C8-D1A cells was as well monitored. The results revealed that acute APAP treatment (24 h) had no effect on the expression of pro-inflammatory cytokines and pNF-kB. This treatment did not alter the ultrastructure of C8-D1A cells when compared with those in the control cells. However, the results obtained from the study on chronic APAP-treated cells (16 and 28 days) showed the different effect of APAP treatment. The results obtained from western blot analysis showed the increment of pro-inflammatory cytokine (IL-1β and TNF-α) expressions and the activation of NF-kB signaling pathway. Nuclear translocation of pNF-kB and alteration of several cell structures were well observed in the C8-D1A cells with chronic APAP treatment. The results obtained from this study suggest that chronic APAP treatment can induce an upregulation of pro-inflammatory cytokines (IL-1β and TNFα) in astrocytes. This alteration implies the involvement of the activation of NF-kB signaling pathway. |
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