Cited by 341Pancreatic function and diabetesRegulation of Appetite and ObesityMetabolism, Diabetes, and Cancer

Regulation of Blood Glucose by Hypothalamic Pyruvate Metabolism

Lam, Tony K. T., Gutierrez-Juarez, Roger, Pocai, Alessandro, Rossetti, Luciano·2005·Science

Abstract

The brain keenly depends on glucose for energy, and mammalians have redundant systems to control glucose production. An increase in circulating glucose inhibits glucose production in the liver, but this negative feedback is impaired in type 2 diabetes. Here we report that a primary increase in hypothalamic glucose levels lowers blood glucose through inhibition of glucose production in rats. The effect of glucose requires its conversion to lactate followed by stimulation of pyruvate metabolism, which leads to activation of adenosine triphosphate (ATP)–sensitive potassium channels. Thus, interventions designed to enhance the hypothalamic sensing of glucose may improve glucose homeostasis in diabetes.

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Crossref · 10.1126/science.1112085

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  • The brain possesses its own glucose sensing machinery that protects itself from hypoglycemic injury by triggering rapid secretion of counterregulatory hormones in response to low extracellular glucose levels.

    “The brain, on one hand, possesses its own glucose sensing machinery that protects itself from hypoglycemic injury by triggering a rapid secretion of counterregulatory hormones in response to low extracellular glucose levels [2].”

    From A mathematical model of brain glucose homeostasis (2009) · cites this paper as [2]

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Authors
Lam, T. K. T., Gutierrez-Juarez, R., Pocai, A., & Rossetti, L.
Affiliations
  • Albert Einstein College of Medicine (US)
  • Departments of Medicine and Molecular Pharmacology, Diabetes Research Center, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA.
Corresponding author
Rossetti, Luciano
Venue
Science
Published
2005-08-05
Volume
309
Issue
5736
Pages
943-947
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W1963957834
Cited by
341
References
32
Citations by year
2026: 5 · 2025: 9 · 2024: 11 · 2023: 8 · 2022: 16 · 2021: 13 · 2020: 7 · 2019: 15 · 2018: 11 · 2017: 9 · 2016: 22 · 2015: 25 · 2014: 11 · 2013: 26 · 2012: 18
FWCI
23.15
Type
journal article
Language
en
Open access
closed
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institute on Aging (P01AG021654, AG 21654, T32AG023475)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK-48321, DK20541, DK-45024)
Topics
  • Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
  • 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
Keywords
blood glucose regulation, hypothalamus, pyruvate metabolism, glucose detection, hepatic glucose production, type 2 diabetes, lactate, ATP-sensitive potassium channels, glucose homeostasis, negative feedback
MeSH terms
Animals, Astrocytes, Blood Glucose, Citric Acid Cycle, Glucose, Glucose-6-Phosphatase, Hypothalamus, Injections, Intraventricular, Liver, Male, Neurons, Pyruvates, Potassium Channels, Rats, Sprague-Dawley, Lactic Acid, Feedback, Physiological, Rats

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