Journals / Türk Hijyen ve Deneysel Biyoloji Dergisi / 2015 / Cilt: 72 - Sayı: 3

Molecular techniques for clinical diagnostic mycology

Mikolojik klinik tanıda moleküler teknikler

Pages
263–272
Publication Date
2022-11-03
DOI
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AI Summary & Key Takeaways

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

Therefore, extensive validation and standardization is needed, before molecular assays can be used in a routine laboratory.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Diagnosing fungal infections remains a problem, particularly in the immunocompromised patient.
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Key Findings & Data:Microscopy, culture based methods, antigen detection, and molecular techniques may help to facilitate and accelerate the diagnosis.
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Conclusion & Impact:Therefore, extensive validation and standardization is needed, before molecular assays can be used in a routine laboratory.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Diagnosing fungal infections remains a problem, particularly in the immunocompromised patient. The clinical manifestations of invasive fungal infections are usually not specific and can be produced by other organisms and colonization is difficult to distinguish from invasive disease. Existing diagnostic tools often lack sensitivity. Thus, the combination of various diagnostic tools is mandatory to allow earlier diagnosis of systemic fungal infections. Microscopy, culture based methods, antigen detection, and molecular techniques may help to facilitate and accelerate the diagnosis. Molecular methods are being developed for the detection and identification of fungi present in clinical samples at a very fast rate, whether it is done by nucleic acid amplification technology or by specific probes or nucleic acid sequencing. However, no comparative studies have been done to determine which are optimal and no standards for testing have been developped to date. Therefore, extensive validation and standardization is needed, before molecular assays can be used in a routine laboratory.

Özet

Mantar hastalıklarının tanımı, özellikle bağışıklığı baskılanmış hastalarda bir sorun olmaya devam etmektedir. klinik yönleri genellikle özgül değidir, başka mikroorganizmalar tarafından da oluşturulabilir ve kolonizasyonu invaziv hastalıktan ayırt etmek güçtür. Mevcut tanım yöntemleri ekseri duyarlılıktan yoksundur. Böylece, sistemik mantar enfeksiyonlarının erken tanımı için çeşitli tanım yöntemlerinin birlikte kullanılması gerekmektedir. Mikroskop incelemesi, kültüre dayalı yöntemler, antijen aranması ve moleküler teknikler tanımı kolaylaştırabilir ve hızlandırabilir. Klinik örnekte bulunan mantarın belirlenmesi ve tanımlanması için nükleik asit amplifikasyon teknolojisi, özgül problar ve nükleik asit sekanslama moleküler teknikleri çok hızla gelişmektedir. Ancak hangisinin en uygun olduğunu belirlemek için henüz karşılaştırmalı çalışmalar bulunmamaktadır ve bugüne kadar testlerin standartlaştılması geliştirilememiştir. Dolayısıyla, moleküler testlerin rutin laboratuvarlarda kullanılabilmesi için önce geçerli kılınmalarına ve standartlaştırılmalarına gereksinim bulunmaktadır.

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Cite This Article

KİRAZ, N. (2022). Molecular techniques for clinical diagnostic mycology. Türk Hijyen ve Deneysel Biyoloji Dergisi, Cilt: 72 - Sayı: 3, 263–272. https://ajindex.com/articles/625089

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References (14)

  1. Khot PD, Ko DL, Fredricks DN. Sequencing and analysis of fungal rRNA operons for development of broad-range fungal PCR analysis. Appl Envir Microbiol, 2009; 75(6): 1559-65
  2. Yeo SF, Wong B. Current status of nonculture methods for diagnosis of invasive fungal infections. Clin Microbiol Rev, 2002; 15(3): 465-84
  3. Balajee SA, Sigler L, Brandt ME. DNA and the classical way: identification of medically important molds in the 21st century. Med Mycol, 2007; 45(6): 475-90
  4. Stevens DA. Diagnosis of fungal infections: current status. J Antimicrob Chemother, 2002; 49 (Suppl S1): 11-9
  5. Roberts GD, Goodman NL. Laboratory diagnosis. In: Merz WG, Hay RJ. (Eds) Medical Mycology, ASM Press, London, 10th ed, 2005, pp. 82-96
  6. Murray PR, Rosenthal KS, Pfaller MA. Molecular diagnosis. In: Medical Microbiology, Elsevier, Philadelphia, 7th ed, 2013, pp. 25-8
  7. Gil-Lamaignere C, Roillides E, Hacker J, Müller FMC. Molecular typing for fungi- a critical review of the possibilities and limitations of currently and future methods. Clin Microbiol Infect, 2003; 9(3): 172-85
  8. Stone NR, Gorton RL, Barker K, Ramnarain P, Kibbler CC. Evaluation of PNA-FISH yeast traffic light for rapid identification of yeast directly from positive blood cultures and assessment of clinical impact. J Clin Microbiol, 2013, 51(4): 1301-2
  9. Hayden RT, Qian X, Roberts GD, Lloyd RV. In situ hybridization for the identification of yeastlike organisms in tissue section. Diagn Mol Pathol, 2001; 10(1): 15-23
  10. Hayden RT, Qian X, Procop GV, Roberts GD, Lloyd RV. In situ hybridization for the identification of filamentous fungi in tissue section. Diagn Mol Pathol, 2002; 11(2): 119-26
  11. Hayden RT, Isolato PA, Parret T, Walk DM, Qian X, Procop GV, et al. In situ hybridization for the detection of Aspergillus, Fusarium and Pseudallescheria species in tissue section. Diagn Mol Pathol, 2003; 12(1): 21-6
  12. Shinozaki M, Okubo Y, Sasai D, et al. Identification of Fusarium species in formalin-fixed and paraffinembeded sections by in situ hybridization using peptide nucleic acid probes. J Clin Microbiol, 2011; 49(3): 808-13
  13. Montone KT. Differentiation Fusarium from Aspergillus species by colorimetric in situ hybridization in formaline-fixed, paraffinembeded tissue sections using dual fluorogeniclabeled LNA probes. Am J Clin Pathol, 2009; 132(6): 866-70
  14. Perez-Jaffe LA, Lanza DC, Loevner LA, Kennedy DV, Montone KT. In situ hybridization for Aspergillus and Penicillium in allergic fungal