Abstract:
:Rosmarinic acid (RA) is a natural polyphenolic compound with a well-documented neuroprotective effect mainly associated with its anti-inflammatory and antioxidant activities. Recently, our research group developed and optimized chitosan-coated RA nanoemulsions (RA CNE) intended to be used for nasal delivery as a new potential neuroprotective therapy. In this sense, the present study aimed to evaluate the protective and/or therapeutic potential of RA CNE in inflammation/oxidative stress induced by LPS (1 μg mL-1) in rat astrocyte primary cultures. In summary, pre-treatment with RA CNE before exposure to LPS (protective protocol) reduced significantly the LPS-induced alterations in astrocyte cell viability, proliferation, and cell death by necrosis, which was not observed in therapeutic protocol. RA CNE protective protocol also enhanced anti-oxidative status by ~ 50% by decreasing oxygen reactive species production and nitric oxide levels and preventing total thiol content decrease. Finally, our results demonstrate the protective effect of RA CNE in migratory activation and GFAP expression of reactive astrocytes. Overall, our findings indicate for the first time the RA CNE glioprotective potential, associated with an increase in cell viability and proliferation, a preventive effect on cellular death by necrosis, migratory ability and hypertrophic reactive astrocytes, and the reparation of astrocyte redox state.
journal_name
Cell Mol Neurobioljournal_title
Cellular and molecular neurobiologyauthors
Fachel FNS,Dal Prá M,Azambuja JH,Endres M,Bassani VL,Koester LS,Henriques AT,Barschak AG,Teixeira HF,Braganhol Edoi
10.1007/s10571-019-00727-ysubject
Has Abstractpub_date
2020-01-01 00:00:00pages
123-139issue
1eissn
0272-4340issn
1573-6830pii
10.1007/s10571-019-00727-yjournal_volume
40pub_type
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