Chlorpromazine inhibits nitric oxide-mediated increase in intracellular cGMP in a mouse teratocarcinoma cell line

M. Fratelli, R. Delgado, M. Zinetti, G. Galli, Y. Rolland, P. Ghezzi

Research output: Contribution to journalArticlepeer-review

Abstract

Chlorpromazine is a phenothiazine with a structure similar to that of methylene blue. Since methylene blue is a well known inhibitor of nitric oxideinduced cyclic GMP accumulation, we investigated whether chlorpromazine had the same effect. Cyclic GMP accumulation, induced in a mouse teratocarcinoma cell line (P19) by sodium nitroprusside (a nitric oxide releasing agent), was inhibited by both methylene blue (IC50 0.34 μM) and chlorpromazine (IC50 35 μM). Chlorpromazine's action was probably directed specifically at soluble guanylate cyclase, since the drug had no effect on ADP-ribosylation in rat hippocampus, another nitric oxide-affected, but cGMP-independent event.

Original languageEnglish
Pages (from-to)287-290
Number of pages4
JournalInflammation Research
Volume44
Issue number7
DOIs
Publication statusPublished - Jul 1995

Keywords

  • ADP-Ribosylation
  • Methylene blue
  • P19 cells
  • Phenothiazines
  • Soluble guanylyl cyclase

ASJC Scopus subject areas

  • Toxicology
  • Pharmacology (medical)
  • Immunology
  • Cell Biology

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