Melanocortin 4 receptors in autonomic neurons regulate thermogenesis and glycemia

Nat Neurosci. 2014 Jul;17(7):911-3. doi: 10.1038/nn.3737. Epub 2014 Jun 8.

Abstract

Whether melanocortin 4 receptors (MC4Rs) in extra-hypothalamic neurons, including cholinergic autonomic pre-ganglionic neurons, are required to control energy and glucose homeostasis is unclear. We found that MC4Rs in sympathetic, but not parasympathetic, pre-ganglionic neurons were required to regulate energy expenditure and body weight, including thermogenic responses to diet and cold exposure and 'beiging' of white adipose tissue. Deletion of Mc4r genes in both sympathetic and parasympathetic cholinergic neurons impaired glucose homeostasis.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adipose Tissue, Brown / metabolism
  • Adipose Tissue, Brown / physiology
  • Adipose Tissue, White / metabolism
  • Adipose Tissue, White / physiology
  • Animals
  • Autonomic Nervous System / cytology
  • Autonomic Nervous System / physiology*
  • Blood Glucose / physiology*
  • Cold Temperature
  • Diet, High-Fat
  • Enzyme-Linked Immunosorbent Assay
  • Gene Expression / physiology
  • Homeostasis / physiology
  • Mice
  • Mice, Inbred C57BL
  • Neurons / physiology*
  • Obesity / etiology
  • Obesity / metabolism
  • Patch-Clamp Techniques
  • Real-Time Polymerase Chain Reaction
  • Receptor, Melanocortin, Type 4 / physiology*
  • Sucrose / pharmacology
  • Thermogenesis / physiology*

Substances

  • Blood Glucose
  • Receptor, Melanocortin, Type 4
  • Sucrose