Acute depletion of serotonin down-regulates serotonin transporter mRNA in raphe neurons

Brain Res. 1995 Aug 7;688(1-2):209-12. doi: 10.1016/0006-8993(95)00539-3.

Abstract

Serotonin transporter (5-HTT) mRNA and 5-HTT sites were measured 3 days after treatment with p-chlorophenylalanine, a tryptophan hydroxylase inhibitor. While 5-HTT mRNA levels decreased (P < 0.001) in the dorsal raphe nucleus, 5-HTT binding sites remained unchanged, suggesting that an acute depletion of 5-HT may induce an increase in the turnover of 5-HTT mRNA without affecting protein levels at 3 days.

Publication types

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

MeSH terms

  • Animals
  • Carrier Proteins / genetics*
  • Down-Regulation
  • Enzyme Inhibitors / pharmacology
  • Fenclonine / pharmacology
  • Histocytochemistry
  • In Situ Hybridization
  • Male
  • Membrane Glycoproteins / genetics*
  • Membrane Transport Proteins*
  • Nerve Tissue Proteins / genetics*
  • Neurons / drug effects*
  • Neurons / metabolism
  • RNA, Messenger / metabolism*
  • Raphe Nuclei / cytology
  • Raphe Nuclei / drug effects*
  • Raphe Nuclei / metabolism
  • Rats
  • Rats, Sprague-Dawley
  • Serotonin / metabolism*
  • Serotonin Agents / pharmacology
  • Serotonin Plasma Membrane Transport Proteins
  • Tryptophan Hydroxylase / antagonists & inhibitors

Substances

  • Carrier Proteins
  • Enzyme Inhibitors
  • Membrane Glycoproteins
  • Membrane Transport Proteins
  • Nerve Tissue Proteins
  • RNA, Messenger
  • Serotonin Agents
  • Serotonin Plasma Membrane Transport Proteins
  • Slc6a4 protein, rat
  • Serotonin
  • Tryptophan Hydroxylase
  • Fenclonine