Cited by 221Regulation of Appetite and ObesityAdipokines, Inflammation, and Metabolic DiseasesNeurotransmitter Receptor Influence on Behavior

Adiposity signals and food reward: expanding the CNS roles of insulin and leptin

Figlewicz, Dianne P.·2003·American Journal of Physiology-Regulatory, Integrative and Comparative Physiology

Abstract

The hormones insulin and leptin have been proposed to act in the central nervous system (CNS) as adiposity signals as part of a theoretical negative feedback loop that senses the caloric stores of an animal and orchestrates adjustments in energy balance and food intake. Much research has provided support for both the existence of such a feedback loop and the specific roles that insulin and leptin may play. Most studies have focused on hypothalamic sites, which historically are implicated in the regulation of energy balance, and on the brain stem, which is a target for neural and humoral signals relating to ingestive acts. More recent lines of research, including studies from our lab, suggest that in addition to these CNS sites, brain reward circuitry may be a target for insulin and leptin action. These studies are reviewed together here with the goals of providing a historical overview of the findings that have substantiated the originally hypothesized negative feedback model and of opening up new lines of investigation that will build on these findings and allow further refinement of the model of adiposity signal/CNS feedback loop. The understanding of how motivational circuitry and its endocrine or neuroendocrine modulation contributes to normal energy balance regulation should expand possibilities for future therapeutic approaches to obesity and may lead to important insights into mental illnesses such as substance abuse or eating disorders.

Integrity signals

Registry

Crossref · 10.1152/ajpregu.00602.2002

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  • Leptin and insulin injections directly into the midbrain dopamine area suppressed expression of food-conditioned place preference.

    “After the initial demonstration that leptin and insulin injections directly into this brain area suppressed expression of food-conditioned place preference ([61](#B61))”

    From Food reward, hyperphagia, and obesity (2011) · cites this paper as [61]

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Authors
Figlewicz, D. P.
Affiliations
University of Washington (US)
Corresponding author
Figlewicz, Dianne P.
Venue
American Journal of Physiology-Regulatory, Integrative and Comparative Physiology
Published
2003-04-01
Volume
284
Issue
4
Pages
R882-R892
ISSN
  • 0363-6119 (ISSN-L)
  • 1522-1490
OpenAlex
W2126649488
Cited by
221
References
132
Citations by year
2026: 2 · 2025: 2 · 2024: 3 · 2023: 4 · 2022: 6 · 2021: 9 · 2020: 2 · 2019: 11 · 2018: 4 · 2017: 7 · 2016: 7 · 2015: 6 · 2014: 12 · 2013: 7 · 2012: 13
FWCI
2.03
Type
journal article
Language
en
Open access
closed
Locations
  • American Journal of Physiology-Regulatory, Integrative and Comparative Physiology (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Diabetes and Digestive and Kidney Diseases (DK 40963, R01DK040963)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
insulin, leptin, adiposity signals, food reward, central nervous system, energy balance, negative feedback loop, hypothalamus, brainstem, reward systems, food intake regulation, obesity, substance abuse, eating disorders
MeSH terms
Animals, Central Nervous System, Energy Metabolism, Feeding Behavior, Humans, Insulin, Leptin, Feedback, Physiological

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