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Logo of agpsychBioMed Centralbiomed central web sitesearchsubmit a manuscriptregisterthis articleAnnals of General Psychiatry
 
Ann Gen Psychiatry. 2010; 9(Suppl 1): S143.
Published online 2010 April 22. doi:  10.1186/1744-859X-9-S1-S143
PMCID: PMC2991829

Evaluating the effect of aquatic extraction of Cannabis sativa seed on spatial memory consolidation

Background

The existence of an endocannabinoid system in the central nervous system that consists of G protein-coupled CB1 cannabinoid receptor and endocannabinoids, including arachidonylethanolamide and anandamideand 2-rachidonoylglycerol, has gained general acceptance. Recent reports suggest that this system may serve several physiological functions thus, this research has tried to examine the research is the role of Tetrahyrocannabinol on learning process and spatial memory consolidation.

Materials and methods

40 male wistar rats (3-4 month, 320-260 g) were completely divided into 4 experimental groups and control group. Cannabis sativa seed was extracted with Soxhlet apparatus. To test spatial memory, Morris water mazemaze (7 days,4 trails) was used experimental groups with 50 mg.kg-1, 100 mg.kg-1, 150 mg.kg-1,210 mg.kg-1 were injected in the peritoneal (IP) respectively and after one hour of injection spatial memory was done.

Results

The results show that experimental groups (50 mg.kg-1,100 mg.kg-1,150 mg.kg-1 doses), for learning time have significant level deduction in the comparison of controlgroup (p < 0.05), but experimental group with 210 mg.kg-1 dose has not significant level in the comparison of control group (p < 0.05).

Conclusions

The research findings show that, Cannabinoid components Injected dose dependent, can be effective on memory and learning processes in Morris water maze test.

Acknowledgements

We thank Dr Heravi and Mr Kazaemi form money support and Azad university of Mashhad, Department of PHysiology from prepare Maze and Materials.

References

  • Kyari M. Extraction and characterization of seed oils. Agrophysics. 2008;22:139–142.
  • Varvel SA, Lichtman AH. Evaluation of CB1 Receptor Knockout Mice in the Morris Water Maze. Pharmacology and experimental Therapeutics. 2002;30:915–924. doi: 10.1124/jpet.301.3.915. [PubMed] [Cross Ref]
  • Hooge R, DeDeyn P. Applications of the Morris water maze in the study of learning and memory. Brain Rev. 2001;36:60–90. doi: 10.1016/S0165-0173(01)00067-4. [PubMed] [Cross Ref]
  • Kawamura Y, Fukaya M. The CB1 Cannabinoid receptor is the major Cannabinoid receptor at excitatory presynaptic sites in the Hippocampus and cerebellum. Eur neuroscience. 2006;26(11):2991–3001. [PubMed]

Articles from Annals of General Psychiatry are provided here courtesy of BioMed Central