期刊
NEUROCHEMISTRY INTERNATIONAL
卷 57, 期 6, 页码 629-636出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.neuint.2010.07.012
关键词
Indomethacin-loaded nanocapsules; Neuroprotection; Neuroinflammation; Organotypic hippocampal culture; Oxygen-glucose deprivation
资金
- CNPq, Brazilian agency
- Rede Brasil-Franca CNPq/MCT, Brazilian agency
- FINEP, Brazilian agency
- Rede Nanocosmeticos/CNPq-MCT, Brazilian agency
- Capes, Brazilian agency
- CNPq
Targeted treatment of diseases of the central nervous system remains problematic due to the complex pathogenesis of these disorders and the difficulty in drug delivery. Here we investigate the neuroprotective effect of indomethacin-loaded nanocapsules (IndOH-NC) in an in vitro model of ischemia. For this purpose we used organotypic hippocampal cultures exposed to oxygen-glucose deprivation (OGD). When the cultures were exposed to 60 min of OGD, 54.5 +/- 14.7% of the total area of the hippocampal slices was labeled with propidium iodide. On the other hand, when the cultures were treated with 50 or 100 mu M of IndOH-NC the cell death was significantly reduced to 31 +/- 7% (P < 0.05) and 20 +/- 4% (P < 0.001), respectively. The treatment with IndOH-NC markedly inhibited the levels of the pro-inflammatory cytokines IL-1 beta, IL-6 and TNF-alpha levels even 48 h after OGD. Immunoblotting revealed that treatment with 100 mu M of IndOH-NC was able to significantly reduce to the levels of control cultures the levels of ERK1/2 and JNK phosphorylation, as well as iNOS activation. Additionally, IndOH-NC prevented glial activation induced by OGD, as evidenced by a decrease of GFAP immunocontent and Isolectin B-4 reactivity. Our results clearly demonstrate that IndOH-NC might represent a promising pharmaceutical neuroprotective formulation for cerebral ischemia, most probably by inhibiting the inflammatory cascades. (c) 2010 Elsevier Ltd. All rights reserved.
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