Neuropeptide Y in the arcuate nucleus is modulated by alterations in glucose utilization

Brain Res. 1993 Sep 10;621(2):343-8. doi: 10.1016/0006-8993(93)90125-7.

Abstract

This study examined the response of hypothalamic neuropeptide Y (NPY) to specific metabolic challenges. After intraperitoneal administration of 2-deoxy-D-glucose, which blocks glucose utilization, NPY levels measured via radioimmunoassay were significantly potentiated in the arcuate (ARC) and suprachiasmatic nuclei of the rat hypothalamus. The antimetabolite mercaptoacetate, in contrast, which blocks fatty acid oxidation, produced no significant change and actually tended to reduce NPY levels in the ARC. It is concluded that glucose utilization, in particular, may constitute an important signal, either direct or indirect, in the modulation of NPY production in the hypothalamus.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Animals
  • Arcuate Nucleus of Hypothalamus / drug effects
  • Arcuate Nucleus of Hypothalamus / metabolism*
  • Deoxyglucose / pharmacology
  • Glucose / metabolism*
  • Male
  • Neuropeptide Y / metabolism*
  • Radioimmunoassay
  • Rats
  • Rats, Sprague-Dawley
  • Thioglycolates / pharmacology

Substances

  • Neuropeptide Y
  • Thioglycolates
  • 2-mercaptoacetate
  • Deoxyglucose
  • Glucose