Original Article

Anti-Leishmanial and Immunomodulatory Effects of Epigallocatechin 3-O-Gallate on Leishmania tropica: Apoptosis and Gene Expression Profiling


Background: Pentavalent antimonials such as meglumine antimoniate (MA, Glucantime), are the first-line treatment against leishmaniasis, but at present, they have basically lost their efficacy. This study was aimed to explore epigallocatechin 3-O-gallate (EGCG), alone or in combination with MA against Leishmania tropica stages.

Methods: All experiments were carried out in triplicate using colorimetric assay, macrophage model, flow cytometry and quantitative real-time PCR. This experimental study was carried out in 2017 in Leishmaniasis Research Center, Kerman University of Medical Sciences, Kerman, Iran.

Results: Promastigotes and amastigotes were more susceptible to EGCG than MA alone, but the effect was more profound when used in combination. EGCG exhibited high antioxidant level with a remarkable potential to induce apoptosis. Furthermore, the results showed that the level of gene expression pertaining to Th-1 was significantly up-regulated (P<0.001).

Conclusion: EGCG demonstrated a potent anti-leishmanial effect alone and more enhanced lethal activity in combination. The principal mode of action entails the stimulation of a synergistic response and up-regulation of the immunomodulatory role towards Th-1 response against L. tropica.

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IssueVol 14 No 4 (2019) QRcode
SectionOriginal Article(s)
DOI https://doi.org/10.18502/ijpa.v14i4.2094
Epigallocatechin 3-O-gallate Leishmania tropica Immunomodulatory role Apoptosis Gene expression

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SADUQI M, SHARIFI I, BABAEI Z, KEYHANI A, MOSTAFAVI M, HAKIMI PARIZI M, GHASEMIAN M, BAMOROVAT M, SHARIFI F, AFLATOONIAN MR, SHARIFIFAR F, GHASEMI NEJAD P, KHOSRAVI A, SALARKIA E, S. VARMA R. Anti-Leishmanial and Immunomodulatory Effects of Epigallocatechin 3-O-Gallate on Leishmania tropica: Apoptosis and Gene Expression Profiling. Iran J Parasitol. 2019;14(4):521-533.