Cited by 719Regulation of Appetite and ObesityHypothalamic control of reproductive hormonesAdipokines, Inflammation, and Metabolic Diseases

Decreasing hypothalamic insulin receptors causes hyperphagia and insulin resistance in rats

Obici, Silvana, Feng, Zhaohui, Karkanias, George, Baskin, Denis G., Rossetti, Luciano·2002·Nature Neuroscience

Abstract

We investigated the role of hypothalamic insulin signaling in the regulation of energy balance and insulin action in rats through selective decreases in insulin receptor expression in discrete hypothalamic nuclei. We generated an antisense oligodeoxynucleotide directed against the insulin receptor precursor protein and administered this directly into the third cerebral ventricle. Immunostaining of rat brains after 7-day administration of the oligodeoxynucleotide showed a selective decrease of insulin receptor protein within cells in the medial portion of the arcuate nucleus (decreased by approximately 80% as compared to rats treated with a control oligodeoxynucleotide). Insulin receptors in other hypothalamic and extra-hypothalamic areas were not affected. This selective decrease in hypothalamic insulin receptor protein was accompanied by rapid onset of hyperphagia and increased fat mass. During insulin-clamp studies, physiological hyperinsulinemia decreased glucose production by 55% in rats treated with control oligodeoxynucleotides but by only 25% in rats treated with insulin receptor antisense oligodeoxynucleotides. Thus, insulin receptors in discrete areas of the hypothalamus have a physiological role in the control of food intake, fat mass and hepatic action of insulin.

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Crossref · 10.1038/nn0602-861

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Authors
Obici, S., Feng, Z., Karkanias, G., Baskin, D. G., & Rossetti, L.
Affiliations
  • Albert Einstein College of Medicine (US)
  • University of Washington (US)
Corresponding author
Rossetti, Luciano
Venue
Nature Neuroscience
Published
2002-05-20
Volume
5
Issue
6
Pages
566-572
ISSN
  • 1097-6256 (ISSN-L)
  • 1546-1726
OpenAlex
W1997565232
Cited by
719
References
36
Citations by year
2026: 9 · 2025: 6 · 2024: 5 · 2023: 16 · 2022: 22 · 2021: 29 · 2020: 27 · 2019: 37 · 2018: 26 · 2017: 37 · 2016: 33 · 2015: 29 · 2014: 38 · 2013: 37 · 2012: 44
FWCI
10.72
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Diabetes and Digestive and Kidney Diseases (DK-48321, DK-17047, DK20541, DK-45024, P30DK017047)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
  • Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
Keywords
hyperphagia, insulin resistance, arcuate nucleus, antisense oligodeoxynucleotides, energy balance, food intake regulation, fat mass, hepatic insulin action, glucose production, insulin signaling
MeSH terms
Adipose Tissue, Animals, Arcuate Nucleus of Hypothalamus, Eating, Glucose, Hyperphagia, Hypothalamus, Injections, Intraventricular, Insulin, Insulin Resistance, Liver, Male, Neuropeptide Y, Proteins, Receptor, Insulin, Oligonucleotides, Antisense, Rats, Sprague-Dawley, Intercellular Signaling Peptides and Proteins, Rats, Agouti-Related Protein

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