Anti-Leishmanial Effect of Oral Zinc Sulfate in Acute Cutaneous Leishmaniasis: A Mini-review

Abstract

Cutaneous Leishmaniasis (CL) is an endemic parasitic infection caused by various Leishmania species, with a specific predisposition of each species into a particular geographical area. Cutaneous lesions can either be a single, limited skin lesion or multiple, large, locally destructions skin lesions.  Several therapies are proposed for CL, but severe side effects, high costs, and incomplete efficacy make researchers find replaceable therapies. Since the usage of zinc sulfate as a therapeutic agent has a long history in treating of various dermatological diseases, Zinc plays an essential role in the development and function of innate immunity cells (neutrophils and natural killer cells), which play significant roles in killing parasites. It also has a significant inhibitory effect on key enzymes involved in the carbohydrate metabolism and virulence of L. major and L.tropica. Therefore, its use as an oral therapy for CL might represent a significant addition to the armamentarium of anti-leishmanial medications.  This review summarizes and discusses previous and recent findings regarding the therapeutic roles of oral zinc sulfate in cutaneous leishmaniasis therapy.