Propolis Demonstrates Anti-Parasitic Capacity

Though Sandflies may not be a problem for some, one bite can induce Leishmaniasis, a potentially fatal disease, as stated in Wikipedia. Fortunately, researchers are exploring the anti-parasitic properties of Propolis, yet another of it's amazing qualities. Thanks to Apitherapy, these discoveries are essentiel for emerging nations lacking in medicinal or financial solutions.

The Effect of Propolis on CCL5 and IFN-γ Expression by Peripheral Blood Mononuclear Cells from Leishmaniasis Patients

J Pharmacy Pharmacology, 2011 Nov 18

Objectives 

Mucocutaneous leishmaniasis is associated with a strong Th1 immune response to Leishmania, which modulates chemokines and their receptors expression, affecting their migratory capacity. There are no antileishmanial vaccines available and chemotherapy still relies on the potentially toxic pentavalent antimonials.

Propolis is a bee product with immunomodulatory and antiparasite activities, and researchers have been attracted to its potential for the development of new drugs.

This work investigated the effects of propolis on CCL5 and IFN-γ expression by peripheral blood mononuclear cells (PBMC) in order to evaluate a possible immunomodulatory action of propolis in patients with leishmaniasis compared to healthy control subjects.

Methods 

PBMC were incubated in the absence or presence of propolis and the evaluation of a possible cytotoxicity of propolis was carried out using MTT assay. The expression level of CCL5 and IFN-γ was determined by real-time PCR.

Key Findings 

Our data indicated that propolis modulates the immune response of leishmaniasis patients in vitro, affecting CCL5 and IFN-γ expression by PBMC.

Conclusions

Data suggested that propolis drives an anti-inflammatory response depending on concentration. Although propolis is a potential source of new and selective drugs for the treatment of leishmaniasis, its usefulness in the therapeutics should be further investigated.

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]...