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Leptin deficiency in maltreated children

A Danese1, R Dove2, D W Belsky3

  • 11] MRC Social, Genetic, and Developmental Psychiatry (SGDP) Centre, Institute of Psychiatry, King's College London, London, UK [2] Department of Child and Adolescent Psychiatry, Institute of Psychiatry, King's College London, London, UK [3] National & Specialist Child Traumatic Stress & Anxiety Clinic, South London and Maudsley NHS Foundation Trust, London, UK.

Translational Psychiatry
|September 24, 2014
PubMed

Insights

Childhood maltreatment is linked to abnormal leptin levels, a hormone regulating energy and immunity. These leptin abnormalities may contribute to long-term physical health issues in maltreated children.

Area of Science:

  • Endocrinology
  • Developmental Psychology
  • Immunology

Background:

  • Early-life stress, such as child maltreatment, is associated with adverse physical health outcomes including obesity and inflammation.
  • Leptin plays a crucial role in regulating energy balance and immune function, making it a potential mediator of these health issues.

Purpose of the Study:

  • To investigate leptin physiology abnormalities in children exposed to maltreatment.
  • To determine if leptin levels are blunted in relation to adiposity and inflammation in maltreated children.

Main Methods:

  • Measured leptin, body mass index (BMI), and C-reactive protein (CRP) in 170 12-year-old children from the Environmental-Risk Longitudinal Twin Study.
  • Compared leptin levels between maltreated children and a matched group of non-maltreated children.
  • Controlled for potential confounders like time of day, food insecurity, pubertal status, and depressive symptoms.

Main Results:

  • Maltreated children showed blunted leptin elevation in response to increasing adiposity and inflammation compared to controls.
  • These findings remained significant after accounting for potential confounders.
  • Birth weight, as a proxy for early leptin levels, suggested abnormalities emerged post-maltreatment, not at birth.

Conclusions:

  • Children exposed to maltreatment exhibit dysregulated leptin physiology.
  • Leptin deficiency may play a role in the development and persistence of physical health problems in maltreated children.
  • These findings highlight the long-term endocrine and metabolic consequences of early-life adversity.

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