Cited by 604Regulation of Appetite and ObesityMetabolism, Diabetes, and CancerAdipokines, Inflammation, and Metabolic Diseases

The role of insulin receptor signaling in the brain

Plum, Leona, Schubert, Markus, Brüning, Jens C.·2005·Trends in Endocrinology & Metabolism

Abstract

The insulin receptor (IR) is expressed in various regions of the developing and adult brain, and its functions have become the focus of recent research. Insulin enters the central nervous system (CNS) through the blood-brain barrier by receptor-mediated transport to regulate food intake, sympathetic activity and peripheral insulin action through the inhibition of hepatic gluconeogenesis and reproductive endocrinology. On a molecular level, some of the effects of insulin converge with those of the leptin signaling machinery at the point of activation of phosphatidylinositol 3-kinase (PI3K), resulting in the regulation of ATP-dependent potassium channels. Furthermore, insulin inhibits neuronal apoptosis via activation of protein kinase B in vitro, and it regulates phosphorylation of tau, metabolism of the amyloid precursor protein and clearance of beta-amyloid from the brain in vivo. These findings indicate that neuronal IR signaling has a direct role in the link between energy homeostasis, reproduction and the development of neurodegenerative diseases.

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Crossref · 10.1016/j.tem.2005.01.008

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86 of 86 references verified0 citation errors · 0 not checkable

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  • Deficient insulin signaling results in impaired removal of Aβ and Aβ oligomers from the extracellular milieu.

    “At the cellular level, deficient insulin signaling results in impaired removal of Aβ (Plum et al., 2005) and Aβ oligomers from the extracellular milieu (Zhao et al., 2009).”
  • The permeability transition pore acts as a regulator of the apoptotic cascade under stress conditions, triggering release of apoptotic proteins and subsequent cell death.

    “In this setting, the permeability transition pore (PTP) acts as a regulator of the apoptotic cascade under stress conditions, triggering the release of apoptotic proteins and subsequent cell death [127].”

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Authors
Plum, L., Schubert, M., & Brüning, J. C.
Affiliations
University of Cologne (DE)
Corresponding author
Brüning, Jens C.
Venue
Trends in Endocrinology & Metabolism
Publisher
Elsevier BV
Published
2005-03
Volume
16
Issue
2
Pages
59-65
ISSN
1043-2760 (ISSN-L)
OpenAlex
W2011430246
Cited by
604
References
86
Citations by year
2026: 13 · 2025: 19 · 2024: 16 · 2023: 23 · 2022: 33 · 2021: 28 · 2020: 42 · 2019: 40 · 2018: 33 · 2017: 32 · 2016: 46 · 2015: 27 · 2014: 35 · 2013: 23 · 2012: 33
FWCI
2.44
Type
journal article
Language
en
Open access
closed
Locations
  • Trends in Endocrinology and Metabolism (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
Keywords
insulin receptor signaling, brain, food intake regulation, sympathetic activity, hepatic gluconeogenesis, reproductive endocrinology, leptin signaling, phosphatidylinositol 3-kinase, ATP-sensitive potassium channels, neuronal apoptosis, Akt, tau phosphorylation, APP processing, amyloid-beta clearance, energy homeostasis, neurodegenerative diseases
MeSH terms
Animals, Brain, Energy Metabolism, Glucose, Homeostasis, Humans, Insulin, Learning, Memory, Receptor, Insulin, Reproduction, Signal Transduction, Neurodegenerative Diseases

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