Cited by 334Neurological Disorders and TreatmentsMetabolism, Diabetes, and CancerAcute Ischemic Stroke Management

Pharmacological inhibition of AMP-activated protein kinase provides neuroprotection in stroke

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McCullough, Louise D., Zeng, Zhiyuan, Li, Hong, Landree, Leslie E., McFadden, Jill, Ronnett, Gabriele V.·2005·Journal of Biological Chemistry

Abstract

The restoration of energy balance during ischemia is critical to cellular survival; however, relatively little is known concerning the regulation of neuronal metabolic pathways in response to central nervous system ischemia. AMP-activated protein kinase (AMPK), a master sensor of energy balance in peripheral tissues, is phosphorylated and activated when energy balance is low. We investigated whether AMPK might also modulate neuronal energy homeostasis during ischemia. We utilized two model systems of ischemia, middle cerebral artery occlusion in vivo and oxygen-glucose deprivation in vitro, to delineate changes in AMPK activity incurred from a metabolic stress. AMPK is highly expressed in cortical and hippocampal neurons under both normal and ischemic conditions. AMPK activity, as assessed by phosphorylation status, is increased following both middle cerebral artery occlusion and oxygen-glucose deprivation. Pharmacological inhibition of AMPK by either C75, a known modulator of neuronal ATP levels, or compound C reduced stroke damage. In contrast, activation of AMPK by 5-aminoimidazole-4-carboxamide ribonucleoside exacerbated damage. Mice deficient in neuronal nitric-oxide synthase demonstrated a decrease in both stroke damage and AMPK activation compared with wild type, suggesting a possible interaction between NO and AMPK activation in stroke. These data demonstrate a role for AMPK in the response of neurons during metabolic stress and suggest that in ischemia the activation of AMPK is deleterious. The ability to manipulate pharmacologically neuronal energy balance during ischemia represents an innovative approach to neuroprotection.

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Crossref · 10.1074/jbc.m409985200

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81 of 81 references verified0 citation errors · 0 not checkable

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  • AMPK is responsive to imbalanced redox status.

    “Recent lines of evidence have demonstrated AMPK responsiveness to imbalanced redox status, thus bringing new insights into the networks of redox-stimulated signals upstream of AMPK (Table 1) [42,43,44,45,46,47,48,49,50,51].”

    From AMPK, Mitochondrial Function, and Cardiovascular Disease (2020) · cites this paper as [47]

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Authors
McCullough, L. D., Zeng, Z., Li, H., Landree, L. E., McFadden, J., & Ronnett, G. V.
Affiliations
  • Pediatrics and Genetics (US)
  • Johns Hopkins University (US)
Corresponding author
  • McCullough, Louise D.
  • Ronnett, Gabriele V.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2005-05
Volume
280
Issue
21
Pages
20493-20502
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2026535174
Cited by
333
References
81
Citations by year
2026: 5 · 2025: 4 · 2024: 9 · 2023: 11 · 2022: 5 · 2021: 21 · 2020: 7 · 2019: 14 · 2018: 25 · 2017: 18 · 2016: 17 · 2015: 21 · 2014: 26 · 2013: 23 · 2012: 22
FWCI
6.96
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Neurology › Neurological Disorders and Treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Health Sciences › Medicine › Epidemiology › Acute Ischemic Stroke Management
Keywords
AMPK, stroke, neuroprotection, cerebral ischemia, middle cerebral artery occlusion, oxygen-glucose deprivation, C75, compound C, neuronal nitric oxide synthase, nitric oxide, AMPK phosphorylation
MeSH terms
Aminoimidazole Carboxamide, Animals, Cerebral Cortex, Brain Ischemia, Constriction, Disease Models, Animal, Energy Metabolism, Enzyme Activation, Enzyme Inhibitors, Glucose, Hippocampus, Immunohistochemistry, Male, Mice, Inbred C57BL, Multienzyme Complexes, Nerve Tissue Proteins, Neurons, Oxygen, Ribonucleotides, 4-Butyrolactone, Protein Serine-Threonine Kinases, Mice, Knockout, Neuroprotective Agents, Nitric Oxide Synthase, Stroke, Middle Cerebral Artery, Mice, Rats, Nitric Oxide Synthase Type I, AMP-Activated Protein Kinases, Fatty Acid Synthases

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