Antimalarial activity in Xylocarpus granatum (Koen)

Area of Science:

• Pharmacognosy
• Medicinal Chemistry
• Parasitology

Background:

• Malaria remains a significant global health challenge, necessitating the discovery of novel antimalarial agents.
• Natural products, particularly from plants, are a rich source of potential drug candidates.
• Xylocarpus granatum is a mangrove species traditionally used for medicinal purposes.

Purpose of the Study:

• To investigate the antimalarial activity of Xylocarpus granatum fruit extracts.
• To identify and characterize the active compounds responsible for the observed antimalarial effects.
• To evaluate the in vitro efficacy of isolated compounds against Plasmodium falciparum.

Main Methods:

• Extraction and fractionation of Xylocarpus granatum fruits using chloroform.
• In vitro testing of extracts and fractions against Plasmodium falciparum.
• Isolation and structural elucidation of pure compounds from the active fraction using chromatographic and spectroscopic techniques.

Main Results:

• The chloroform fraction of Xylocarpus granatum fruits demonstrated significant in vitro antimalarial activity.
• Four compounds were isolated: gedunin, photogedunin, xyloccensin-I, and palmitic acid.
• Gedunin and xyloccensin-I exhibited antimalarial activity comparable to the parent active fraction.

Conclusions:

• Xylocarpus granatum fruits possess promising antimalarial properties.
• Gedunin and xyloccensin-I are key active constituents contributing to the antimalarial efficacy of X. granatum.
• Further research into these compounds could lead to the development of new antimalarial drugs.