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Int J Med Parasitol Epidemiol Sci. 2023;4(3): 70-75.
doi: 10.34172/ijmpes.3135
  Abstract View: 127
  PDF Download: 92

Original Article

Evaluation of Immunity Responses Against Excretory-Secretory and Lysate Antigens Purified from Leishmania major

Ali Fattahi Bafghi 1* ORCID logo, Mohammad Reza Mozayan 2 ORCID logo, Hamideh Emtiazi 3 ORCID logo, Elaheh Hezardastan 1, Raziyeh Asadi 1

1 Department of Parasitology and Mycology, Infectious Diseases Research Center, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
2 General Courses Department, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
3 Faculty of Pharmacology, Shahid Sadoughi University of Medical Sciences, Safaeeyeh, Yazd, Iran
*Corresponding Author: Ali Fattahi Bafghi, Emails: a.fattahi@ssu.ac.ir, , Email: afbafghi@gmail.com

Abstract

Introduction: Leishmaniasis is one of the 10 most important infectious diseases in the world, including the three diseases for which the development of vaccines, drugs, and insecticides is difficult to tackle. Despite over a century of efforts made in the field, no suitable vaccine, medicine, or insecticide has been introduced for the disease to date. In this survey, we intended to evaluate the immunity responses against Excretory-Secretory and Lysate Antigens purified from Leishmania major.

Methods: A sufficient amount of L. major [MRHO/IR/75/ER] was first cultured in Novy-MacNeal-Nicolle (NNN) and RPMI 1640 media in the in vitro environment. Once peripheral blood mononuclear cells (PBMCs) were prepared, they were cultured with antigens in a 5% CO2 incubator, and their supernatant was then measured using the interleukin-4 (IL4) and interferon-γ (INF)-γ the enzyme-linked immunosorbent assay (ELISA) kit.

Results: An average concentration of IL4 and INF-γ of the cell culture containing phytohaemagglutinin showed a significant difference between the average concentration of these two cytokines in the cell culture of all antigens (P<0.05), but it indicated insignificant difference between the antigens (P>0.05).

Conclusion: Since the larger the immunogenic and protective components are exposed to the human immune system, the more concrete the results will be, investigations should thus be conducted at the cellular and even molecular levels. Moreover, the antigen used should be a conjugation of adjuvants, immunogens, and proliferators of macrophages to provide sufficient stimulation of the immune system against the Leishmania parasite.

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Submitted: 02 Sep 2023
Accepted: 14 Sep 2023
ePublished: 29 Sep 2023
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