Preliminary pharmacological activity of the methanolic extract of Premna integrifolia barks in rats

Document Type: Original Research Article

Authors

1 Department of Pharmacy, Southeast University, Dhaka, Bangladesh

2 Department of Pharmacy, Atish Dipankar University of Science and Technology, Dhaka, Bangladesh

3 Department of Pharmacy, Rajshahi University, Rajshahi, Bangladesh

4 Department of Pharmacy, University of Asia Pacific, Dhaka, Bangladesh

5 Department of Pharmacy, Jahangirnagar University, Savar, Dhaka, Bangladesh

Abstract

Objective: Premna integrifolia Linn (Family: Verbenaceae) synonym of Premna serratifolia has tremendous medicinal value. Preliminary pharmacological studies were performed on the methanolic extract of Premna integrifolia (MEPI) bark to investigate neuropharmacological, analgesic, and anti-inflammatory activities.
Materials and methods: Neuropharmacology study was done by open field and hole cross test whereas acetic acid writhing test and formalin induced pain was done for analgesic activity of MEPI. Carrageenan induced inflammatory model was considered for anti-inflammatory activity evaluation.  
Results: A statistically significant (p<0.05) decrease in locomotor activity was observed at all doses in the open-field and hole-cross tests. The extract significantly (p<0.05) and dose dependently reduced the writhing reflex in the acetic acid-induced writhing test as well as licking response in the formalin induced inflammatory pain. At 200 mg/kg body weight dose, MEPI showed 71.16% inhibition in carrageenan induced anti-inflammatory activity.
Conclusion: The finding of this study suggests that MEPI will provide scientific support for the use of this species in traditional medicine.

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