Journals / Mikrobiyoloji Bülteni / 2012 / Cilt: 46 - Sayı: 1

Blastoschizomyces capitatus fungemia: three case reports and review of the literature

Blastoschizomyces capitatus'un etken olduğu fungemi: üç olgu sunumu ve literatürün gözden geçirilmesi

Pages
134–143
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

In conclusion, B.capitatus should be considered as an important opportunistic pathogen especially in patients with hematologic malignancies.

📌 3 Key Takeaways

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Objective & Hypothesis:Blastoschizomyces capitatus is a rare fungal pathogen that may lead to fatal infections especially in immunosuppressive individuals.
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Key Findings & Data:The patients were under treatment for acute myeloid leukemia and their blood cultures yielded B.capitatus.
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Conclusion & Impact:In conclusion, B.capitatus should be considered as an important opportunistic pathogen especially in patients with hematologic malignancies.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Orta yaşlı · Erkek · Kadın

Abstract

Blastoschizomyces capitatus is a rare fungal pathogen that may lead to fatal infections especially in immunosuppressive individuals. In this report, three cases of B.capitatus were presented. The patients were under treatment for acute myeloid leukemia and their blood cultures yielded B.capitatus. The patients clinical conditions deteriorated and they died despite amphotericin B treatment. The isolates were identified by conventional mycological methods and API 20C AUX (Bio-Mérieux, France) system. Antifungal susceptibility test of the strains was performed with Sensititre Yeast One Panel (Trek Diagnostic Systems, USA) and minimum inhibitory concentration (MIC) ranges for amphotericin B, caspofungin, fluconazole, itraconazole, voriconazole, posaconazole, and flucytosine were found as 0.5-1; > 16; 8-16; 0.5; 0.25; 0.5-1 and 0.06-0.25 μg/ml, respectively. Isolated strains were genotyped with RAPD-PCR (Random Amplified Polymorphic DNA-Polymerase Chain Reaction) using Cnd-3, Cnd-4, OPE-03, OPE-18 primers. The strains isolated from the first two cases were found to be genotypically identical, while the strain isolated from the third case was different. Genotypically identical isolates belonged to two patients who were admitted to the hospital with approximately 18 months interval. The other strain with a unique genotype, was isolated from a patient who was admitted to the hospital about two years later than the other two patients. In conclusion, B.capitatus should be considered as an important opportunistic pathogen especially in patients with hematologic malignancies. The data of this study demonstrated that the lowest MIC values for B.capitatus strains were with voriconazole.

Özet

Blastoschizomyces capitatus, nadir görülen, özellikle immün sistemi baskılanmış kişilerde ölümcül enfeksiyonlara yol açabilen bir maya mantarıdır. Bu raporda, hastanemizin hematoloji bilim dalında akut miyelositer lösemi tanısı ile tedavi görmekte iken kan kültürlerinde B.capitatus üreyen üç olgunun (57 yaşında kadın, 50 yaşında erkek ve 59 yaşında kadın) sunulması amaçlanmıştır. Olgular amfoterisin B tedavisi almalarına rağmen klinik durumları kötüleşerek kaybedilmiştir. Suşların tanımlanmasında konvansiyonel mikolojik yöntemler ve API 20C AUX (Bio-Mérieux, Fransa) kiti kullanılmıştır. İzolatların antifungal duyarlılık testi “Sensititre Yeast One Panel (Trek Diagnostic Systems, ABD)” sistemiyle yapılmış; amfoterisin B, kaspofungin, flukonazol, itrakonazol, vorikonazol, posakonazol ve flusitozin için minimum inhibitör konsantrasyonu (MİK) aralıkları sırasıyla 0.5-1; > 16; 8-16; 0.5; 0.25; 0.5-1 ve 0.06- 0.25 μg/ml olarak bulunmuştur. İzole edilen suşlar Cnd-3, Cnd-4, OPE-03, OPE-18 primerlerinin kullanıldığı RAPD-PCR (Random Amplified Polymorphic DNA-Polymerase Chain Reaction) ile genotiplendirilmiş; ilk iki olgudan izole edilen suşların aynı, üçüncü olgudan izole edilen suşun ise farklı genotipte olduğu saptanmıştır. Benzer genotipte olan iki suşun izole edildikleri olguların hastaneye son başvuru tarihleri arasında yaklaşık 1.5 ay süre olduğu; farklı genotipte olan suşun izole edildiği olgunun ise ilk iki olgudan yaklaşık iki yıl sonra hastaneye başvurduğu belirlenmiştir. Sonuç olarak; B.capitatus’un özellikle hematolojik malignitesi olan hastalarda sistemik enfeksiyonlara neden olabileceği unutulmamalı ve suşlarda en düşük MİK değerlerinin vorikonazol için saptandığı göz önünde tutulmalıdır.

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Cite This Article

KORKMAZGİL, B. G., YAVAŞOĞLU, İ., EYİGÖR, M., KADIKÖYLÜ, G., BOLAMAN, A. Z., AYDIN, N. (2012). Blastoschizomyces capitatus fungemia: three case reports and review of the literature. Mikrobiyoloji Bülteni, Cilt: 46 - Sayı: 1, 134–143. https://ajindex.com/articles/298757

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