Cited by 525Regulation of Appetite and ObesityAdipokines, Inflammation, and Metabolic DiseasesHypothalamic control of reproductive hormones

Leptin, Obesity, and Leptin Resistance: Where Are We 25 Years Later

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Izquierdo, Andrea G., Crujeiras, Ana B., Casanueva, Felipe F., Carreira, Marcos C.·2019·Nutrients

Abstract

Leptin, a hormone that is capable of effectively reducing food intake and body weight, was initially considered for use in the treatment of obesity. However, obese subjects have since been found to have high levels of circulating leptin and to be insensitive to the exogenous administration of leptin. The inability of leptin to exert its anorexigenic effects in obese individuals, and therefore, the lack of clinical utility of leptin in obesity, is defined as leptin resistance. This phenomenon has not yet been adequately characterized. Elucidation of the molecular mechanisms underlying leptin resistance is of vital importance for the application of leptin as an effective treatment for obesity. Leptin must cross the blood-brain barrier (BBB) to reach the hypothalamus and exert its anorexigenic functions. The mechanisms involved in leptin transportation across the blood-brain barrier continue to be unclear, thereby preventing the clinical application of leptin in the treatment of obesity. In recent years, new strategies have been developed to recover the response to leptin in obesity. We have summarized these strategies in this review.

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Authors
Izquierdo, A. G., Crujeiras, A. B., Casanueva, F. F., & Carreira, M. C.
Affiliations
  • Instituto de Salud Carlos III (ES)
  • Universidade de Santiago de Compostela (ES)
Corresponding author
  • Casanueva, Felipe F.
  • Carreira, Marcos C.
Venue
Nutrients
Publisher
MDPI AG
Published
2019-11-08
Volume
11
Issue
11
Pages
2704
ISSN
2072-6643 (ISSN-L)
OpenAlex
W2987043898
Cited by
525
References
92
Citations by year
2026: 39 · 2025: 76 · 2024: 92 · 2023: 105 · 2022: 111 · 2021: 72 · 2020: 30
FWCI
6.37
Type
journal article
Language
en
Open access
Locations
  • Nutrients (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Hispana (submittedVersion, cc-by)
  • Repositorio institucional da Universidade de Santiago de Compostela (University of Santiago de Compostela) (submittedVersion, other-oa)
  • RUNA. Repositorio Institucional del Sergas (Servicio Gallego de Salud (SERGAS)) (submittedVersion, cc-by)
Funders
  • Instituto de Salud Carlos III (CP17/00088, PI17/01287)
  • European Regional Development Fund (CP17/00088)
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
leptin, leptin resistance, obesity, anorectic effect, blood-brain barrier, hypothalamus, leptin transport, leptin therapy
MeSH terms
Blood-Brain Barrier, Brain, Capillary Permeability, Feeding Behavior, Humans, Obesity, Signal Transduction, Weight Gain, Anti-Obesity Agents, Leptin, Adiposity

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