Cited by 593Regulation of Appetite and ObesityAdipokines, Inflammation, and Metabolic DiseasesHypothalamic control of reproductive hormones

Leptin in Human Physiology and Pathophysiology

Open access
Mantzoros, Christos S., Magkos, Faidon, Brinkoetter, Mary, Sienkiewicz, Elizabeth, Dardeno, Tina A., Kim, Sang-Yong, Hamnvik, Ole-Petter R., Koniaris, Anastasia·2011·American Journal of Physiology-Endocrinology and Metabolism

Abstract

Leptin, discovered through positional cloning 15 years ago, is an adipocyte-secreted hormone with pleiotropic effects in the physiology and pathophysiology of energy homeostasis, endocrinology, and metabolism. Studies in vitro and in animal models highlight the potential for leptin to regulate a number of physiological functions. Available evidence from human studies indicates that leptin has a mainly permissive role, with leptin administration being effective in states of leptin deficiency, less effective in states of leptin adequacy, and largely ineffective in states of leptin excess. Results from interventional studies in humans demonstrate that leptin administration in subjects with congenital complete leptin deficiency or subjects with partial leptin deficiency (subjects with lipoatrophy, congenital or related to HIV infection, and women with hypothalamic amenorrhea) reverses the energy homeostasis and neuroendocrine and metabolic abnormalities associated with these conditions. More specifically, in women with hypothalamic amenorrhea, leptin helps restore abnormalities in hypothalamic-pituitary-peripheral axes including the gonadal, thyroid, growth hormone, and to a lesser extent adrenal axes. Furthermore, leptin results in resumption of menses in the majority of these subjects and, in the long term, may increase bone mineral content and density, especially at the lumbar spine. In patients with congenital or HIV-related lipoatrophy, leptin treatment is also associated with improvements in insulin sensitivity and lipid profile, concomitant with reduced visceral and ectopic fat deposition. In contrast, leptin's effects are largely absent in the obese hyperleptinemic state, probably due to leptin resistance or tolerance. Hence, another emerging area of research pertains to the discovery and/or usefulness of leptin sensitizers. Results from ongoing studies are expected to further increase our understanding of the role of leptin and the potential clinical applications of leptin or its analogs in human therapeutics.

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Registry

Crossref · 10.1152/ajpendo.00315.2011

Cites

293 of 293 references verified0 citation errors · 0 not checkable

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  • Leptin is an adipokine that acts as a satiety signal and can directly or indirectly improve insulin sensitivity and reduce lipids and visceral adiposity.

    “Leptin is an adipokine that acts as a satiety signal, and can directly or indirectly improve insulin sensitivity and reduce lipids and visceral adiposity [28].”
  • Leptin regulates food intake, metabolism, energy expenditure, and body weight.

    “It regulates food intake, metabolism, energy expenditure, and body weight (11).”
  • Excessive adipose tissue corresponds to an increase in leptin production rate and higher serum leptin levels.

    “Hence, excessive amounts of adipose tissue in the body correspond to an increase in leptin production rate, and thus, higher serum leptin levels (11).”
  • Leptin is produced and secreted primarily by adipocytes.

    “Leptin is a hormone produced and secreted primarily by adipocytes.”
  • Leptin is a signaling hormone and adipokine essential to activating central nervous system networks involved in the suppression of appetite.

    “Leptin is a signaling hormone and adipokine that is essential to activating central nervous system (CNS) networks involved in the suppression of appetite.”

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Authors
Mantzoros, C. S., Magkos, F., Brinkoetter, M., Sienkiewicz, E., Dardeno, T. A., Kim, S.-Y., Hamnvik, O.-P. R., & Koniaris, A.
Affiliations
  • Beth Israel Deaconess Medical Center (US)
  • Brigham and Women's Hospital (US)
Corresponding author
Mantzoros, Christos S.
Venue
American Journal of Physiology-Endocrinology and Metabolism
Published
2011-10
Volume
301
Issue
4
Pages
E567-E584
ISSN
  • 0193-1849 (ISSN-L)
  • 1522-1555
OpenAlex
W2010072332
Cited by
593
References
294
Citations by year
2026: 18 · 2025: 21 · 2024: 37 · 2023: 30 · 2022: 46 · 2021: 31 · 2020: 42 · 2019: 40 · 2018: 39 · 2017: 40 · 2016: 39 · 2015: 34 · 2014: 64 · 2013: 58 · 2012: 50
FWCI
5.92
Type
journal article
Language
en
Open access
Locations
  • American Journal of Physiology-Endocrinology and Metabolism (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Diabetes and Digestive and Kidney Diseases (R01DK079929, DK-081913, R01DK058785, R56DK058785, DK079929, DK 58785, K24DK081913)
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 deficiency, leptin resistance, hypothalamic amenorrhea, lipoatrophy, HIV-associated lipoatrophy, energy homeostasis, hypothalamic-pituitary axis, bone mineral density, insulin sensitivity, obesity, leptin therapy
MeSH terms
Adipose Tissue, Amenorrhea, Energy Metabolism, Female, Homeostasis, Humans, Hypothalamic Diseases, Hypothalamus, Male, Neurosecretory Systems, Reproduction, Leptin

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