Cited by 432Regulation of Appetite and ObesityPancreatic function and diabetesDiabetes Treatment and Management

Hypothalamic sensing of circulating fatty acids is required for glucose homeostasis

Lam, Tony K T, Pocai, Alessandro, Gutierrez-Juarez, Roger, Obici, Silvana, Bryan, Joseph, Aguilar-Bryan, Lydia, Schwartz, Gary J, Rossetti, Luciano·2005·Nature Medicine

Abstract

Increased glucose production is a hallmark of type 2 diabetes and alterations in lipid metabolism have a causative role in its pathophysiology. Here we postulate that physiological increments in plasma fatty acids can be sensed within the hypothalamus and that this sensing is required to balance their direct stimulatory action on hepatic gluconeogenesis. In the presence of physiologically-relevant increases in the levels of plasma fatty acids, negating their central action on hepatic glucose fluxes through (i) inhibition of the hypothalamic esterification of fatty acids, (ii) genetic deletion (Sur1-deficient mice) of hypothalamic K(ATP) channels or pharmacological blockade (K(ATP) blocker) of their activation by fatty acids, or (iii) surgical resection of the hepatic branch of the vagus nerve led to a marked increase in liver glucose production. These findings indicate that a physiological elevation in circulating lipids can be sensed within the hypothalamus and that a defect in hypothalamic lipid sensing disrupts glucose homeostasis.

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Crossref · 10.1038/nm1201

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  • Free fatty acid sensing by the hypothalamus is a well-established modulator of neuronal activity, affecting peripheral metabolism.

    “Free fatty acid sensing by the hypothalamus is a well-established modulator of neuronal activity57, affecting peripheral metabolism58–60”
  • Blocking LCFA oxidation by increasing malonyl CoA levels in the CNS reduces food intake and hepatic glucose production.

    “pharmacological interventions designed to block LCFA oxidation by increasing malonyl CoA levels (e.g. oleic acid, fatty acid synthase (FAS) inhibitor) in the CNS reduce food intake and HGP (99, 107, 133, 147)”
  • Accumulating evidence suggests that leptin, insulin, and nutrient-related signals in the CNS improve hepatic insulin sensitivity.

    “Although accumulating evidence suggests that leptin (10 -13), insulin (14,15), and nutrient-related signals (16 -18) in the CNS improve hepatic insulin sensitivity”

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Authors
Lam, T. K. T., Pocai, A., Gutierrez-Juarez, R., Obici, S., Bryan, J., Aguilar-Bryan, L., Schwartz, G. J., & Rossetti, L.
Affiliations
  • Albert Einstein College of Medicine (US)
  • Baylor College of Medicine (US)
Corresponding author
Rossetti, Luciano
Venue
Nature Medicine
Published
2005-02-27
Volume
11
Issue
3
Pages
320-327
ISSN
  • 1078-8956 (ISSN-L)
  • 1546-170X
OpenAlex
W2067378751
Cited by
432
References
50
Citations by year
2026: 7 · 2025: 5 · 2024: 11 · 2023: 8 · 2022: 10 · 2021: 14 · 2020: 14 · 2019: 20 · 2018: 12 · 2017: 19 · 2016: 20 · 2015: 23 · 2014: 23 · 2013: 31 · 2012: 25
FWCI
12.10
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Medicine (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • American Diabetes Association
  • National Institutes of Health (5r01dk057671-03)
  • National Institute on Aging (P01AG021654, AG 21654, T32AG023475)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK-48321, DK 57671, DK52771, DK-47208, R01DK047208, DK20541, R01DK052771, DK-45024)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
  • Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Treatment and Management
Keywords
circulating fatty acids, glucose homeostasis, hepatic gluconeogenesis, type 2 diabetes, ATP-sensitive potassium channels, SUR1, fatty acid esterification, vagus nerve, hepatic glucose production, lipid metabolism
MeSH terms
Animals, Coenzyme A Ligases, Diabetes Mellitus, Type 2, Dietary Fats, Fat Emulsions, Intravenous, Fatty Acids, Nonesterified, Glyburide, Glucose, Glucose-6-Phosphatase, Homeostasis, Hypothalamus, Injections, Intraventricular, Liver, Male, Triazenes, Vagotomy, Rats, Sprague-Dawley, Potassium Channels, Inwardly Rectifying, Potassium Channel Blockers, Rats

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