Seroprevalence for Toxoplasma Gondii in Allogeneic Hematopoietic Stem Cell Transplantation Recipients


Atilla E., Ataca P., Balli S., Isikoglu B., Topcuoglu P., Ozcan M., ...Daha Fazla

BLOOD, cilt.126, sa.23, ss.5459, 2015 (SCI-Expanded)

  • Yayın Türü: Makale / Özet
  • Cilt numarası: 126 Sayı: 23
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1182/blood.v126.23.5459.5459
  • Dergi Adı: BLOOD
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.5459
  • Ankara Üniversitesi Adresli: Evet

Özet

Abstract Introduction: Toxoplasmosis is a rare but serious and life-threatening infection following Allogeneic Stem Cell Transplantation (Allo-HSCT). The main cause of toxoplasmosis is the reactivation of latent infection in pre-transplant seropositive patients. In our study, our aim is to present toxoplasma gondii seroprevalence in our center. Patients and Methods: A total of 251 allogeneic stem cell transplant recipient were evaluated retrospectively from 1998 to 2015. During Allo-HSCT preparation procedures all recepients were serologically tested. Donor serology records were not adequate. Toxoplasma gondii-specific IgG and IgM antibodies were determined by Chemiluminescence by ARCHITECT lab analyzers using commercially available kits (Abbott, USA). All patients were followed for reactivation. Results: Toxoplasma IgG positivity was detected in 51 of patients (20.3%). There was no statistically difference detected between related or unrelated transplants. The mean age of the group was 36 (range 14-71). 144 recipients were male (57%). 208 (83%) patients were transplanted for malign hematological diseases. The majority of patients were grafted from full-matched related donors (173, 69%). The most common source of stem cell was peripheral blood in 192 patients (77%) followed by bone-marrow in 51 patients (51%), bone-marrow plus peripheral blood in 7 patients (2.8%) and cord in 1 patient (0.4%). 192 (77%) patients received myeloablative conditioning regimens. All patients received prophylactic twice weekly trimethoprim/sulfamethoxazole (TMP/SMX) (160/800mg PO daily) after engraftment. Two patients had clinical symptoms of toxoplasmosis however they were seronegative in serology. None of the patients developed an active toxoplasmosis after Allo-HSCT. Conclusion: Since less than 30% seropositivity defined as low rate, our institution had low rate seropositivity for Toxoplasma Gondii in Allo-HSCT recipients. Routine use of TMP/SMX prophylaxis and difficulties in diagnosis of toxoplasmosis may lead to low frequency active toxoplasmosis. Disclosures No relevant conflicts of interest to declare.