Journals / Mikrobiyoloji Bülteni / 2005 / Cilt: 39 - Sayı: 4

Microbiological evaluation of the cases prediagnosed as pulmonary tuberculosis based on clinical and radiological findings

Klinik ve radyolojik bulgular ile akciğer tüberkülozu ön tanısı alan hastaların mikrobiyolojik sonuçları

Pages
431–435
DOI
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

It can be concluded that molecular methods may aid to the diagnosis of tuberculosis, in conjunction with clinical findings and bacteriological results.

📌 3 Key Takeaways

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Objective & Hypothesis:In the present study, 34 new pulmonary tuberculosis cases prediagnosed upon clinical and radiological findings, have been evaluated by means of microbiological aspects such as microscopy [Ehrlich-Ziehl Neelsen (EZN) and Auramin-Rhodamine (A-R) stains], culture [inoculation into Lowenstein-Jensen (LJ) media] and three different molecular methods [Cobas Amplicor Mycobacterium tuberculosis polymerase chain reaction (PCR), Gen-Probe amplified M.tuberculosis direct test and TaqMan Real Time ABI 5700 PCR].
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Key Findings & Data:M.tuberculosis positivity of the sputum samples were 55.8% (n: 19) with EZN staining, 52.9% (n: 18) with A-R staining and 58.8% (n: 20) with culture methods.
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Conclusion & Impact:It can be concluded that molecular methods may aid to the diagnosis of tuberculosis, in conjunction with clinical findings and bacteriological results.
🔬Design:Research Article
📍Scope:34 samples
⚙️Variables:Boyama ve işaretleme · DNA · bakteriyel

Abstract

In the present study, 34 new pulmonary tuberculosis cases prediagnosed upon clinical and radiological findings, have been evaluated by means of microbiological aspects such as microscopy [Ehrlich-Ziehl Neelsen (EZN) and Auramin-Rhodamine (A-R) stains], culture [inoculation into Lowenstein-Jensen (LJ) media] and three different molecular methods [Cobas Amplicor Mycobacterium tuberculosis polymerase chain reaction (PCR), Gen-Probe amplified M.tuberculosis direct test and TaqMan Real Time ABI 5700 PCR]. M.tuberculosis positivity of the sputum samples were 55.8% (n: 19) with EZN staining, 52.9% (n: 18) with A-R staining and 58.8% (n: 20) with culture methods. Among molecular techniques, Cobas Amplicor and TaqMan PCR yielded positive results in 21 patients (61.7%), however, the pdsitivity rate of Gen-Probe AMTD was 47.0% (n: 16). Of 34 samples, 10 (29.4%) were found to be positive with all of the methods used, while six (17.6%) of them were negative with all methods. It can be concluded that molecular methods may aid to the diagnosis of tuberculosis, in conjunction with clinical findings and bacteriological results.

Özet

Bu çalışmada, klinik ve radyolojik bulgular ile akciğer tüberkülozu ön tanısı almış tedavi öncesi 34 yeni olgu, mikroskopi [Ehrlich-Ziehl Neelsen (EZN) ve Auramine-Rhodamine (A-R) boyama ile], kültür [Lowenstein-Jensen (LJ) besiyerine ekim ile] ve üç ayrı moleküler yöntem [Cobas Amplicor Mycobacterium tuberculosis polimeraz zincir reaksiyonu (PCR), Gen-Probe amplifiye M.tuberculosis direk test ve TaqMan Real Time ABI 5700 PCR] ile değerlendirmiştir. Hastalara ait balgam örneklerinin 19'unda (%55.8) EZN boyama ile, 18'inde (%52.9) A-R boyama ile ve 20'sinde (%58.8) kültür yöntemi ile pozitiflik saptanmıştır. Moleküler yöntemlerden Cobas Amplicor ve TaqMan PCR ile 21 örnek (%61.7) pozitif sonuç verirken, Gen-Probe AMTD yönteminde 16 örnek (%47.0) pozitif olarak bulunmuştur. İncelenen 34 örneğin 10'unda (%29.4) tüm testler pozitif iken, altısında (%17.6) tüm testler negatif olarak belirlenmiştir. Sonuç olarak, tüberküloz tanısında moleküler yöntemler klinik bulgular ve bakteriyolojik yöntem (mikroskopi ve kültür) sonuçlarının desteklenmesinde olanağı olan laboratuvarlarda oldukça yararlı olarak kullanılabilirler.

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Cite This Article

TARHAN, G., CESUR, S., ÖZYILMAZ, E., CEYHAN, İ., GÜLER, M., KONUR, Ö., ÇİFTÇİ, B., ERDOĞAN, Y. (2005). Microbiological evaluation of the cases prediagnosed as pulmonary tuberculosis based on clinical and radiological findings. Mikrobiyoloji Bülteni, Cilt: 39 - Sayı: 4, 431–435. https://ajindex.com/articles/299061

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