Turkiye parazitolojii dergisi · 2021
Investigation of Intestinal Protozoon Prevalence in Immunocompromised Patients at a University Hospital.
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Kaya Filiz, İnkaya Ahmet Çağkan, Aksoy Sercan, Abbasoğlu Osman, Ertenli Ali İhsan, Büyükaşık Yahya, Arıkan Akdağlı Sevtap, Akyön Yakut, Ergüven Sibel
Аннотация
OBJECTIVE: Immunocompromised patients are at a greater risk of developing intestinal parasite infections. In this study, we examined the presence of Enterocytozoon bieneusi, Encaphalitozoon intestinalis and other intestinal protozoa in stool samples of immunosuppressed patients.
METHODS: A total of 100 stool samples were obtained from patients receiving chemotherapy because of solid organ tumour with haematological malignancies and those receiving immunosuppressive treatment because of rheumatic diseases, organ transplant patients and patients receiving treatment for HIV-related infections. Stool samples were examined by using the native-lugol method in which the stool concentration, modified Kinyoun acid-fast and trichrome staining methods and parasite presence were analysed. The stool samples were also examined for the presence of Enterocytozoon bieneusi and Encephalitozoon intestinalis using an indirect fluorescent antibody method.
RESULTS: Intestinal parasites were detected in 12% of all patients. The distribution of intestinal parasites in patients were 7% Blastocystis spp., 2% Blastocystis spp. + Dientamoeba fragilis, 1% Blastocystis spp. + Entamoeba coli, 1% Blastocystis spp. + Giardia intestinalis and 1% G. intestinalis. Microsporidia spp. were detected in 4% of all patients by the IFAT method and in 8% of all patients by calcoflour staining method.
CONCLUSION: In our study, the most prevalent parasite detected in the immunosuppressed patients was Blastocystis spp. The pathogenesis of Blastocystis spp. remains to be controversial, and their role in immunocompromised patients continues to remain unknown. Although these rates detected in our study are similar to the prevalence in the normal population, it is important to study these microorganisms in immunocompromised patients in terms of the associated decreasing morbidity and mortality rates.
METHODS: A total of 100 stool samples were obtained from patients receiving chemotherapy because of solid organ tumour with haematological malignancies and those receiving immunosuppressive treatment because of rheumatic diseases, organ transplant patients and patients receiving treatment for HIV-related infections. Stool samples were examined by using the native-lugol method in which the stool concentration, modified Kinyoun acid-fast and trichrome staining methods and parasite presence were analysed. The stool samples were also examined for the presence of Enterocytozoon bieneusi and Encephalitozoon intestinalis using an indirect fluorescent antibody method.
RESULTS: Intestinal parasites were detected in 12% of all patients. The distribution of intestinal parasites in patients were 7% Blastocystis spp., 2% Blastocystis spp. + Dientamoeba fragilis, 1% Blastocystis spp. + Entamoeba coli, 1% Blastocystis spp. + Giardia intestinalis and 1% G. intestinalis. Microsporidia spp. were detected in 4% of all patients by the IFAT method and in 8% of all patients by calcoflour staining method.
CONCLUSION: In our study, the most prevalent parasite detected in the immunosuppressed patients was Blastocystis spp. The pathogenesis of Blastocystis spp. remains to be controversial, and their role in immunocompromised patients continues to remain unknown. Although these rates detected in our study are similar to the prevalence in the normal population, it is important to study these microorganisms in immunocompromised patients in terms of the associated decreasing morbidity and mortality rates.