Cited by 234Regulation of Appetite and ObesityAdipokines, Inflammation, and Metabolic DiseasesHypothalamic control of reproductive hormones

Molecular disruption of hypothalamic nutrient sensing induces obesity

He, Wu, Lam, Tony K T, Obici, Silvana, Rossetti, Luciano·2006·Nature Neuroscience

Abstract

The sensing of circulating nutrients within the mediobasal hypothalamus may be critical for energy homeostasis. To induce a sustained impairment in hypothalamic nutrient sensing, adeno-associated viruses (AAV) expressing malonyl-coenzyme A decarboxylase (MCD; an enzyme involved in the degradation of malonyl coenzyme A) were injected bilaterally into the mediobasal hypothalamus of rats. MCD overexpression led to decreased abundance of long-chain fatty acyl-coenzyme A in the mediobasal hypothalamus and blunted the hypothalamic responses to increased lipid availability. The enhanced expression of MCD within this hypothalamic region induced a rapid increase in food intake and progressive weight gain. Obesity was sustained for at least 4 months and occurred despite increased plasma concentrations of leptin and insulin. These findings indicate that nutritional modulation of the hypothalamic abundance of malonyl-coenzyme A is required to restrain food intake and that a primary impairment in this central nutrient-sensing pathway is sufficient to disrupt energy homeostasis and induce obesity.

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Crossref · 10.1038/nn1626

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Authors
He, W., Lam, T. K. T., Obici, S., & Rossetti, L.
Affiliations
Albert Einstein College of Medicine (US)
Corresponding author
Rossetti, Luciano
Venue
Nature Neuroscience
Published
2006-01-15
Volume
9
Issue
2
Pages
227-233
ISSN
  • 1097-6256 (ISSN-L)
  • 1546-1726
OpenAlex
W2076637814
Cited by
233
References
31
Citations by year
2026: 2 · 2025: 4 · 2024: 5 · 2023: 2 · 2022: 1 · 2021: 2 · 2020: 7 · 2019: 4 · 2018: 4 · 2017: 7 · 2016: 7 · 2015: 7 · 2014: 8 · 2013: 18 · 2012: 16
FWCI
12.33
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • American Diabetes Association
  • Skirball Foundation
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
  • Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
Keywords
obesity, malonyl-CoA decarboxylase, mediobasal hypothalamus, energy homeostasis, fatty acyl-CoA, dietary intake, leptin, insulin, malonyl-CoA, AAV gene delivery, lipid availability
MeSH terms
Animals, Energy Intake, Carboxy-Lyases, Eating, Fluorescent Antibody Technique, Hypothalamus, Male, Obesity, Blotting, Western, Glucose Clamp Technique, Rats, Sprague-Dawley, Lipid Metabolism, Rats

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