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Year : 2019  |  Volume : 8  |  Issue : 1  |  Page : 38-44

Molecular detection of Toxoplasma gondii in a sample of Iraqi patients with acute leukemia and stem cell transplantation

1 Department of Medical Microbiology, College of Medicine, Al-Nahrain University, Baghdad, Iraq
2 Deptartment of Medicine, College of Medicine, Al-Nahrain University, Baghdad, Iraq
3 Bone Marrow Transplantation Center in the Medical Complex, Baghdad, Iraq
4 AL Emamain AL-Kadhemain Medical City, Baghdad, Iraq

Correspondence Address:
Prof. Waseem F Al-Tameemi
Department of Medicine, College of Medicine, Al-Nahrain University, P. O. Box 70044, Baghdad
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijh.ijh_28_18

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BACKGROUND: Acute leukemia and allogenic bone marrow transplantation BMT are immunocompromised conditions which may be susceptible for many opportunistic infections or reactivation of latent infections like Toxoplasma gondii (T.gondii). OBJECTIVES: The aims of study were to detect T.gondii in both acute leukemia patients and allogenic BMT recipients and to determine copy number of T.gondii in these groups in comparison to healthy individual as control group. METHODS: Sixty one acute leukemia patients enrolled in a prospective study from 1st December 2016 to 1st June 2017. Forty eight of them evaluated while induction chemotherapy (group I), while the other 13 within 1 year post bone marrow transplantation-BMT-(group II). In addition to 30 apparently healthy individuals as (control group), blood samples were collected from all groups. T.gondii DNA was extracted and then measured by Taqman quantitative real-time PCR. Measurement IgG and IgM antibody specific to T. gondii was investigated also in the control group by an enzyme-linked immune assay (ELISA). RESULTS: T.gondii parasitemia was detected in (8.3%) 4 out of 48 group I patient. While negative in group II and control group. The range of T.gondii load was (6.285×103-17.915×103) copy/ml, the mean of the copy numbers 11458.75± 5120.85. CONCLUSION: T.gondii should be looked for Leukemic patients at least by routine serological test for early diagnosis and early treatment if indicated. Quantitative PCR is used to monitor post BMT patients at risk for T.gondii disease and for a timely start of preemptive therapy.

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