ANXIOLYTIC ACTIVITY OF MARINE MACROALGAE SARGASSUM ILICIFOLIUM AND PADINA TETRASTOMATICA IN MICE
Keywords:
Sargassum ilicifolium, Padina tetrastomatica, Brown algae, Anxiolytic activityAbstract
Objective: The present study was designed to investigate an anxiolytic effect of chloroform and ethanol extract of Sargassum ilicifolium (SI) and Padina tetrastomatica (PT) in mice.
Methods: Acute toxicity study was done as per OECD 423 guidelines. Based on acute toxicity studies, doses of 200, 400 and 600 mg/kg of SI and PT extracts were selected, and the anxiolytic activity was assessed using Elevated plus maze (EPM) and light/dark exploration (L/DE) tests.
Results: Diazepam (2 mg/kg), the ethanol extract of SI (400 mg/kg) as well as ethanol extract of PT (600 mg/kg) significantly increased time spent and entries into the open arm in EPM test. In L/DE test Diazepam, chloroform extract (600 mg/kg) and ethanol extract (400 mg/kg) of SI as well as chloroform extract (600 mg/kg) and ethanol extract (600 mg/kg) of PT significantly increased time spent in light box and transition between the boxes.
Conclusion: in the present investigation, ethanol extract at 400 and chloroform extract at 600 mg/kg of Sargassum ilicifolium as well as ethanol extract at 400 and 600 mg/kg and chloroform extract at 600 mg/kg of Padina tetrastomatica exhibited an anxiolytic effect in the experimental model of anxiety. However, additional research will be necessary to investigate the mechanism underlying this anxiolytic activity.
Keywords: Sargassum ilicifolium, Padina tetrastomatica, Brown algae, Anxiolytic activity
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