Moderate Ethanol Pre-treatment Mitigates ICH-Induced Injury via ER Stress Modulation in Rats

Intracerebral hemorrhage (ICH) is a life-threatening type of stroke that disrupts the normal neurological function of the brain. Clinical studies have reported a non-linear J-shaped association between alcohol consumption levels and the occurrence of cerebral stroke. Specifically, alcohol intoxicati...

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Published inFrontiers in molecular neuroscience Vol. 14; p. 682775
Main Authors Lin, Peter Bor-Chian, Wang, Po-Kai, Pang, Cheng-Yoong, Hu, Wei-Fen, Tsai, Andy Po-Yi, Oblak, Adrian L., Liew, Hock-Kean
Format Journal Article
LanguageEnglish
Published Lausanne Frontiers Research Foundation 25.06.2021
Frontiers Media S.A
Subjects
alcohol consumption
Alcohol use
Apoptosis
Blood pressure
chaperone proteins
Cytokines
Disease
Ethanol
Hemorrhage
Homeostasis
Inflammation
Intoxication
Laboratory animals
Liver
Molecular Neuroscience
Neostriatum
neuroinflmmation
Neurological diseases
neuroprotection
Oxidative stress
Physiology
Proteins
Stroke
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Summary:Intracerebral hemorrhage (ICH) is a life-threatening type of stroke that disrupts the normal neurological function of the brain. Clinical studies have reported a non-linear J-shaped association between alcohol consumption levels and the occurrence of cerebral stroke. Specifically, alcohol intoxication increases stroke incidence, while moderate alcohol pre-conditioning decreases stroke frequency and improves outcomes. Although alcohol pre-consumption is likely a crucial player in ICH, the underlying mechanism remains unclear. We performed 1-h alcohol pre-conditioning followed by ICH induction in Sprague-Dawley (SD) rats to investigate the role of alcohol pre-conditioning in ICH. Interestingly, behavioral test analysis found that ethanol intoxication (3 g/kg) aggravated ICH-induced neurological deficits, but moderate ethanol pre-conditioning (0.75 g/kg) ameliorated ICH-induced neurological deficits by reducing the oxidative stress and proinflammatory cytokines release. Moreover, we found that moderate ethanol pretreatment improved the striatal endoplasmic reticulum (ER) homeostasis by increasing the chaperone protein expression and reducing oxidative stress and apoptosis caused by ICH. Our findings show that the mechanism regulated by moderate ethanol pre-conditioning might be beneficial for ICH, indicating the importance of ER homeostasis, oxidative stress, and differential cytokines release in ICH.
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Edited by: Yunjong Lee, Sungkyunkwan University, South Korea
Reviewed by: Seung Pil Yun, Gyeongsang National University, South Korea; Jeff L. Weiner, Wake Forest School of Medicine, United States
These authors have contributed equally to this work
This article was submitted to Molecular Signalling and Pathways, a section of the journal Frontiers in Molecular Neuroscience
ISSN:1662-5099
1662-5099
DOI:10.3389/fnmol.2021.682775