Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz

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SHR Neuro Krebs Kardio Lipid Stoffw Microb

Busemann, C; Ribback, S; Zimmermann, K; Sailer, V; Kiefer, T; Schmidt, CA; Schulz, K; Steinmetz, I; Dombrowski, F; Dölken, G; Krüger, WH.
Toxoplasmosis after allogeneic stem cell transplantation--a single centre experience.
Ann Hematol. 2012; 91(7):1081-1089 Doi: 10.1007/s00277-012-1406-5 (- Case Report)
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Co-Autor*innen der Med Uni Graz
Steinmetz Ivo

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Toxoplasmosis is a rare but possibly underestimated complication following allogeneic stem cell transplantation with a high mortality rate. One reason might be the limitation of the diagnostic instruments relying mainly on imaging and molecular-based techniques. In this report, we present three cases of toxoplasmosis identified among 155 allograft recipients treated at Greifswald University Hospital. Widely disseminated toxoplasmosis was detected post-mortem in two patients allografted for high-risk multiple myeloma. Clinical signs suspicious for toxoplasmosis occurred after days +32 and +75, respectively. In one case, serology and conventional Toxoplasma gondii PCR, targeting the B1 gene, revealed negative results, while in the other patient, toxoplasmosis was not investigated. Both patients received pentamidine for Pneumocystis jirovecii pneumonia (PcP) prophylaxis. The third patient, a 68-year-old woman allografted for AML, developed cerebral toxoplasmosis from day +395 after allogeneic SCT with typical signs in magnetic resonance tomography. Toxoplasma DNA was amplified from one of two samples of cerebrospinal fluid. The patient died of disseminated toxoplasmosis despite immediate initiation of therapy. Retrospective comparative testing of clinical specimens by the conventional T. gondii PCR and by a real-time PCR targeting a 529-bp genomic fragment suggests a higher sensitivity of the latter method in our patients. In conclusion, we suggest a rigorous real-time PCR monitoring for high-risk patients or patients with signs of infections suspicious for toxoplasmosis, even though low-copy results are presently difficult to interpret. Our reported cases might also encourage the use of trimethoprim-sufmethoxazole instead of pentamidine for PcP prophylaxis in those patients.
Find related publications in this database (using NLM MeSH Indexing)
Acute Disease -
Aged -
Cohort Studies -
Fatal Outcome -
Female -
Graft vs Host Disease - complications
Hematopoietic Stem Cell Transplantation - adverse effects
Humans -
Leukemia, Myeloid, Acute - therapy
Male -
Middle Aged -
Multiple Myeloma - therapy
Retrospective Studies -
Toxoplasmosis - diagnosis
Toxoplasmosis - etiology
Transplantation, Homologous - adverse effects

Find related publications in this database (Keywords)
Allogeneic stem cell transplantation
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