Cited by 213Regulation of Appetite and ObesityHypothalamic control of reproductive hormonesAdipokines, Inflammation, and Metabolic Diseases

Differential regulation of metabolic, neuroendocrine, and immune function by leptin in humans.

Chan, Jean L., Matarese, Giuseppe, Shetty, Greeshma K., Raciti, Patricia, Kelesidis, Iosif, Aufiero, Daniela, De Rosa, Veronica, Perna, Francesco +2 more·2006·Proceedings of the National Academy of Sciences

Abstract

To elucidate whether the role of leptin in regulating neuroendocrine and immune function during short-term starvation in healthy humans is permissive, i.e., occurs only when circulating leptin levels are below a critical threshold level, we studied seven normal-weight women during a normoleptinemic-fed state and two states of relative hypoleptinemia induced by 72-h fasting during which we administered either placebo or recombinant methionyl human leptin (r-metHuLeptin) in replacement doses. Fasting for 72 h decreased leptin levels by ≈80% from a midphysiologic (14.7 ± 2.6 ng/ml) to a low-physiologic (2.8 ± 0.3 ng/ml) level. Administration of r-metHuLeptin during fasting fully restored leptin to physiologic levels (28.8 ± 2.0 ng/ml) and reversed the fasting-associated decrease in overnight luteinizing hormone pulse frequency but had no effect on fasting-induced changes in thyroid-stimulating hormone pulsatility, thyroid and IGF-1 hormone levels, hypothalamic–pituitary–adrenal and renin–aldosterone activity. FSH and sex steroid levels were not altered. Short-term reduction of leptin levels decreased the number of circulating cells of the adaptive immune response, but r-metHuLeptin did not have major effects on their number or in vitro function. Thus, changes of leptin levels within the physiologic range have no major physiologic effects in leptin-replete humans. Studies involving more severe and/or chronic leptin deficiency are needed to precisely define the lower limit of normal leptin levels for each of leptin’s physiologic targets.

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Crossref · 10.1073/pnas.0505429103

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  • Leptin concentrations are positively correlated with the amount of body fat.

    “Leptin concentrations are positively correlated with the amount of body fat (4-10).”

    From Leptin in humans: lessons from translational research (2009) · cites this paper as [7]

  • A significant role of leptin in the regulation of the hypothalamic-pituitary-thyroid axis has been well established in humans.

    “A significant role of leptin in the regulation of the hypothalamicpituitary-thyroid axis has been well established in humans (6)(7)(8).”

    From Leptin in humans: lessons from translational research (2009) · cites this paper as [7]

  • In states of secondary failure of the HPG axis associated with loss of fat mass, such as exercise-induced amenorrhea or anorexia nervosa, exogenously administered leptin may fully normalize function of this axis.

    “Moreover, in states of secondary failure of the HPG axis associated with loss of fat mass, such as in exercise-induced amenorrhea or anorexia nervosa, exogenously administered leptin may fully normalize function of this axis (5,7,9,17).”

    From Leptin in humans: lessons from translational research (2009) · cites this paper as [7]

  • The role of leptin in regulating immune function appears to be permissive.

    “The role of leptin in regulating immune function appears to be a permissive one (33), because there might exist a critical leptin threshold above which leptin has no major additional physiologic effect on neuroendocrine or immune function (7).”

    From Leptin in humans: lessons from translational research (2009) · cites this paper as [7]

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Authors
Chan, J. L., Matarese, G., Shetty, G. K., Raciti, P., Kelesidis, I., Aufiero, D., De Rosa, V., Perna, F., Fontana, S., & Mantzoros, C. S.
Affiliations
  • Beth Israel Deaconess Medical Center (US)
  • Institute for Experimental Endocrinology and Oncology (IT)
  • Institute of Molecular Biology and Pathology (IT)
  • Gruppo di ImmunoEndocrinologia, Istituto di Endocrinologia e Oncologia Sperimentale, Consiglio Nazionale delle Ricerche (IEOS–CNR), 80131 Naples, Italy; and
  • University of Naples Federico II (IT)
Venue
Proceedings of the National Academy of Sciences
Published
2006-05-30
Volume
103
Issue
22
Pages
8481-8486
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1977283476
Cited by
213
References
34
Citations by year
2026: 3 · 2025: 6 · 2024: 7 · 2023: 6 · 2022: 6 · 2021: 7 · 2020: 6 · 2019: 7 · 2018: 5 · 2017: 11 · 2016: 5 · 2015: 9 · 2014: 18 · 2013: 8 · 2012: 10
FWCI
9.74
Type
journal article
Language
en
Open access
closed
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Amgen
  • Fondazione Italiana Sclerosi Multipla
  • Deutsches Krebsforschungszentrum
  • National Institutes of Health
  • U.S. Public Health Service (R0-158785)
  • National Center for Research Resources (RR 01032, M01RR001032, K23RR018860)
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
leptin, hypoleptinemia, fasting, recombinant human leptin, luteinizing hormone pulsatility, thyroid-stimulating hormone, hypothalamic-pituitary-adrenal axis, renin-aldosterone system, immune function, insulin-like growth factor I, sex steroids, metabolic regulation, neuroendocrine regulation
MeSH terms
Adaptation, Physiological, Adipose Tissue, Adult, Body Weight, Cells, Cultured, Fasting, Female, Hormones, Humans, Immunity, Immunity, Innate, Insulin-Like Growth Factor I, Leukocyte Count, Neurosecretory Systems, T-Lymphocytes, Time Factors, Leptin, Body Fat Distribution

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