A group of compounds commonly found in garlic may not only an effective treatment for malaria, the mechanism by which they inhibit the infection appears to be similar to the mechanism they use to fight cancer cells.Researcher from the University of Toronto report these findings at the 50th Annual Meeting of the American Society of Tropical Medicine and Hygiene in Atlanta.
The compounds called disulfides, occur naturally in garlic, onions and mahogany trees and are known to have antifungal, anticancer and antibacterial properties.For years scientists have suspected that one of these compounds in garlic may be helpful against malaria and have proven it in animal models. Crandall and collegues, though, were more interested in understanding how these disulphides worked against infection.
AdvertisementThey tested 11 different synthetic disulphide compounds against malaria.- infected cells. They also tested the effect of these compounds on cancer cells. While not all of the disulphides were effective against Plasmodium falciparum, the malaria parasite, those that were were also effective at killing the cancer cells.Candrall believes that the mechanism of action may be on the glutathione system within the cell.
In this system, the glutathione is reduced (the opposite of oxidation) and stored in the cell like energy in a battery. This reduced glutathione can then be brought out to absorb damage caused by oxygen and other harmful particles when needed.The glutathione system is of particular importance in cells that rapidly reproduce, like cancer cells or malaria-infected cells, because these harmful particles are natural by-products of metabolism.Ajoene, the disulphide that naturally occurs in garlic, is a known inhibitor of glutathione reduction.
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