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Serological Evaluation of Anti-Toxoplasma Gondii Antibodies in Patients With Acute Leukemia and Lymphoma Through Chemotherapy



Tabatabaie F1 ; Elmi T1 ; Khanmohammadi M2 ; Akhlaghi L1 ; Mahamioskouei M3 ; Arshadi M1, 4
Authors
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Authors Affiliations
  1. 1. Department of Parasitology and Mycology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
  2. 2. Department of Laboratory Sciences, Marand Branch, Islamic Azad University, Marand, Iran
  3. 3. Department of Parasitology and Mycology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
  4. 4. Al-Zahra Hospital, Tabriz University of Medical Sciences, Tabriz, Iran

Source: Iranian Journal of Parasitology Published:2020

Abstract

Background: Toxoplasma gondii is a protozoan parasite that belongs to the family Coccidae. We aimed to evaluate IgG avidity and the changes of anti-Toxoplasma immuno-globulins M (IgM) and G (IgG) in patients with acute leukemia and lymphoma. Methods: Ninety eight patients with Acute myeloid leukemia (AML), Acute Lymphoblastic Leukemia (ALL) and lymphoma, selected from patients referring to Imam Reza Hospital of Tabriz (38°04′N 46°18′E), in terms of the presence of anti-Toxoplasma IgM, IgG, IgG avidity antibodies and the major risk factors were evaluated. Results: The results of pre-chemotherapy evaluation showed that of the examined patients, only two cases, one patient with ALL and another patient with lymphoma, had a positive IgM titer. Overall, 46 cases had positive IgG titers, including 20 patients with AML, 15 patients with ALL and 11 patients with lymphoma. Three (3.06%) patients were positive for anti-T. gondii IgM and one of them was with new infection of toxo-plasmosis in lymphoma patients. The post-chemotherapy IgG titer evaluation showed 46 [46.9% (95% CI 37.4–56.7)] positive IgG cases that this result was similar to the result of pre-treatment phase. One [1% (95% CI 0.2–5.6)] positive IgG avidity case was detected using ELISA method, in a patient with lymphoma whose IgM was also positive. There was no significant difference between the type of leukemia and the history of contact with cat. Conclusion: Performing specialized tests to diagnose toxoplasma infection before starting treatment, in immunodeficiency patients who undergo chemotherapy, is necessary; therefore, these tests should be considered in therapeutic protocols. © 2020, Tehran University of Medical Sciences (TUMS). All rights reserved.
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