Tanacetum parthenium enhances pentobarbital-induced sleeping behaviors

Document Type : Original Research Article


1 Neuroscience Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.

2 Department of Neuroscience, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.

3 Department for Population and Family Health, Vice Chancellery for Health, Mashhad University of Medical Sciences, Mashhad, Iran.

4 Health Promotion Research Center, Zahedan University of Medical Science, Zahedan, Iran.

5 Department of Pharmacology, School of Medicine, Zahedan University of Medical Science, Zahedan, Iran.

6 Pharmacological Research Center of Medicinal Plants, Mashhad University of Medical Sciences, Mashhad, Iran

7 Medical Toxicology Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.


Objective: Sleep disorders are among the most common psychiatric and medical conditions. In the present study, the hypnotic effect of Tanacetum parthenium was studied in mice
Material and Methods: The hydro-alcoholic extract (HAE) of T. parthenium and three fractions of it, namely water fraction (WF), ethyl acetate fraction (EAF), and n-hexane fraction (NHF), were intraperitoneally (ip) administrated to mice 30 min before injection of sodium pentobarbital (30 mg/kg, ip). Then, 30 min after administration of HAE, motor coordination (rota-rod test) was evaluated. Besides, LD50 of HAE was determined and the cytotoxicity of HAE was evaluated in PC12 cells using the MTT assay.
Results: HAE 50-200 mg/kg increased the sleeping time. EAF was the only fraction which could prolong the sleep duration and decrease sleep latency. The LD50 value was 4.8 g/kg. The extract induced no cytotoxic effects in PC12 cell line.
Conclusion: The results suggested that T. parthenium potentiates pentobarbital hypnosis without causing toxic effects. Probably, its effects are mediated by the components present in EAF of this plant.


Main Subjects

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