Anxiolytic effects of Echium amoenum on the elevated plus-maze model of anxiety in mice

Fitoterapia. 2004 Jul;75(5):457-64. doi: 10.1016/j.fitote.2004.04.004.

Abstract

The ethanolic extract of Echium amoenum flowers at the dose of 50 mg/kg increased the percentage of time-spent and the percentage of arm entries in the open arms of the elevated plus-maze (EPM) and decreased the percentage of time-spent in the closed arms of EPM. Moreover, it prolonged the ketamine-induced latency to sleep but had no significant effects on total sleeping time induced by ketamine. Also, the locomotor activity was affected but not to the same extent as observed for diazepam. These results suggested that the extract of E. amoenum seems to possess anxiolytic effect with lower sedative activity than that of diazepam.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Anti-Anxiety Agents / administration & dosage
  • Anti-Anxiety Agents / pharmacology*
  • Anti-Anxiety Agents / therapeutic use
  • Anxiety / drug therapy*
  • Echium*
  • Flowers
  • Male
  • Maze Learning / drug effects*
  • Mice
  • Motor Activity / drug effects
  • Phytotherapy*
  • Plant Extracts / administration & dosage
  • Plant Extracts / pharmacology*
  • Plant Extracts / therapeutic use

Substances

  • Anti-Anxiety Agents
  • Plant Extracts