Propolis Found to be Natural Anti-Protozoal Agent

Propolis, the natural protector extraordinaire...

Activity of Cuban Propolis Extracts on Leishmania amazonensis and Trichomonas vaginalis
Natural Product Communications, 2011 Jul;6(7):973-6

In this paper we analyzed the antiprotozoal effects of eighteen Cuban propolis extracts (brown, red and yellow type) collected in different geographic areas, using Leishmania amazonensis (as a model of intracellular protozoa) and Trichomonas vaginalis (as a model of extracellular protozoa).

All evaluated propolis extracts caused inhibitory effect on intracellular amastigotes of L. amazonensis. However, cytotoxicity on peritoneal macrophages from BALB/c mice was observed. Only five samples decreased the viability of T. vaginalis trophozoites at concentrations lower than 10 microg/mL. No correlation between the type of propolis and antiprotozoal activity was found.
Cuban propolis extracts demonstrated activity against both intracellular and extracellular protozoa model, as well as the potentialities of propolis as a natural source to obtain new antiprotozoal agents...

Diverse pharmacological activities of propolis have been explored, such as: anti-inflammatory and anti-tumoral effect [2a]. Up to now, antimicrobial properties have been widely investigated; including antibacterial [2b], antiviral [2c] and antifungal activity [2d]. Antiparasitic activities have also been reported against  Trypanosoma cruzi  [2e] and Giardia duodenalis [2f]. However, only a few studies have been carried out for the antileishmanial [3a-3c] and antitrichomonocidal activity [4a]. In Cuba, propolis has displayed therapeutic potentialities as antipsoriatic, antiinflamatory, analgesic [4b], antibacterial [4c] and antitumoral [4d]. Scarce reports can be found about its antiparasitic activity. Thus, its biological potentiality has not been explored totally...  

Leishmania are protozoa that cause leishmaniasis [5a]. The disease is endemic in 88 countries throughout Latin America, Africa, Asia and Southern Europe. Approximately 350 million people are thought to be at risk with a worldwide prevalence  of 12 million and annual incidence of 2 million new cases [5b]...