Novel sulfoglycolipid IG20 causes neuroprotection by activating the phase II antioxidant response in rat hippocampal slices.

Abstract:

:Compound IG20 is a newly synthesised sulphated glycolipid that promotes neuritic outgrowth and myelinisation, at the time it causes the inhibition of glial proliferation and facilitates exocytosis in chromaffin cells. Here we have shown that IG20 at 0.3-10 μM afforded neuroprotection in rat hippocampal slices stressed with veratridine, glutamate or with oxygen plus glucose deprivation followed by reoxygenation (OGD/reox). Excess production of reactive oxygen species (ROS) elicited by glutamate or ODG/reox was prevented by IG20 that also restored the depressed tissue levels of GSH and ATP in hippocampal slices subjected to OGD/reox. Furthermore, the augmented iNOS expression produced upon OGD/reox exposure was also counteracted by IG20. Additionally, the IG20 elicited neuroprotection was prevented by the presence of inhibitors of the signalling pathways Jak2/STAT3, MEK/ERK1/2, and PI3K/Akt, consistent with the ability of the compound to increase the phosphorylation of Jak2, ERK1/2, and Akt. Thus, the activation of phase II response and the Nrf2/ARE pathway could explain the antioxidant and anti-inflammatory effects and the ensuing neuroprotective actions of IG20.

journal_name

Neuropharmacology

journal_title

Neuropharmacology

authors

Punzón E,García-Alvarado F,Maroto M,Fernández-Mendívil C,Michalska P,García-Álvarez I,Arranz-Tagarro JA,Buendia I,López MG,León R,Gandía L,Fernández-Mayoralas A,García AG

doi

10.1016/j.neuropharm.2016.12.016

subject

Has Abstract

pub_date

2017-04-01 00:00:00

pages

110-121

eissn

0028-3908

issn

1873-7064

pii

S0028-3908(16)30580-9

journal_volume

116

pub_type

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