Interleukin-1β Protects Neurons against Oxidant-Induced Injury via the Promotion of Astrocyte Glutathione Production
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Interleukin-1β (IL-1β), a key cytokine that drives neuroinflammation in the Central Nervous System (CNS), is enhanced in many neurological diseases/disorders. Although IL-1β contributes to and/or sustains pathophysiological processes in the CNS, we recently demonstrated that IL-1β can protect cortical astrocytes from oxidant injury in a glutathione (GSH)-dependent manner. To test whether IL-1β could similarly protect neurons against oxidant stress, near pure neuronal cultures or mixed cortical cell cultures containing neurons and astrocytes were exposed to the organic peroxide, tert-butyl hydroperoxide (t-BOOH), following treatment with IL-1β or its vehicle. Neurons and astrocytes in mixed cultures, but not pure neurons, were significantly protected from the toxicity of t-BOOH following treatment with IL-1β in association with enhanced GSH production/release. IL-1β failed to increase the GSH levels or to provide protection against t-BOOH toxicity in chimeric mixed cultures consisting of IL-1R1+/+ neurons plated on top of IL-1R1−/− astrocytes. The attenuation of GSH release via block of multidrug resistance-associated protein 1 (MRP1) transport also abrogated the protective effect of IL-1β. These protective effects were not strictly an in vitro phenomenon as we found an increased striatal vulnerability to 3-nitropropionic acid-mediated oxidative stress in IL-1R1 null mice. Overall, our data indicate that IL-1β protects neurons against oxidant injury and that this likely occurs in a non-cell-autonomous manner that relies on an increase in astrocyte GSH production and release.
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Improved supply of GSH precursors from astrocytes to neurons and a thereby better resistance of neurons has been reported after β-adrenergic stimulation, by exposure to interleukin 1β, or after exposure to ethanol.
“Interestingly, improved supply of GSH precursors from astrocytes to neurons and a thereby better resistance of neurons has been reported after β‐adrenergic stimulation (Yoshioka et al. 2021), by exposure to interleukin 1β (Chowdhury et al. 2018) or after exposure to ethanol (Rathinam et al. 2006).”
From Glutathione Metabolism of the Brain—The Role of Astrocytes (2025) · cites this paper as Chowdhury et al. 2018
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Glutathione Metabolism of the Brain—The Role of Astrocytes
Dringen, R., & Arend, C. (2025) · Journal of Neurochemistry · doi:10.1111/jnc.70073 · Cited by 46 · see citing works
- Authors
- Chowdhury, T., Allen, M. F., Thorn, T. L., He, Y., & Hewett, S. J.
- Affiliations
- Syracuse University (US)
- Corresponding author
- Hewett, Sandra J.
- Venue
- Antioxidants
- Publisher
- MDPI AG
- Published
- 2018-07-25
- Volume
- 7
- Issue
- 8
- Pages
- 100
- ISSN
- 2076-3921 (ISSN-L)
- PMC
- PMC6115796
- OpenAlex
- W2883429937
- Cited by
- 18
- References
- 4
- Citations by year
- 2026: 2 · 2025: 2 · 2023: 1 · 2022: 1 · 2021: 4 · 2020: 4 · 2019: 3 · 2018: 1
- FWCI
- 1.32
- Type
- journal article
- Language
- en
- Open access
- gold
- dx.doi.org
- Licence
- Locations
- Antioxidants (publishedVersion, cc-by)
- Europe PMC (PubMed Central) (publishedVersion, other-oa)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- National Institutes of Health (5R01NS051445- 08)
- Topics
- Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Glutathione Transferases and Polymorphisms
- Keywords
- IL-1β, glutathione, astrocytes, neurons, oxidant injury, tert-butyl hydroperoxide, oxidative stress, neuroprotection, IL-1 receptor 1, MRP1, astrocyte-neuron interaction, 3-nitropropionic acid, striatum, neuroinflammation
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Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
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