Journals / Kafkas Üniversitesi Veteriner Fakültesi Dergisi / 2012 / Cilt: 18 - Sayı: 0

A New Approach to the Diagnosis of Species of Blastocystis: Direct Fluorescent Antibody Method

Blastocystis Türlerinin Tanısında Yeni Bir Yaklaşım: Direk Floresan Antikor Yöntemi

Pages
171–174
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

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

DFA method, which is fast and practical, is considered as an alternative diagnosis method to culture method which requires longer time

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Blastocystis is a widely detected intestinal protozoon throughout the world.
📊
Key Findings & Data:In our study, stool samples of 105 patients (male/female:55/50) were examined for the Blastocystis hominis positivity using native-lugol exaamination, trichrome staining, culture in the Ringer's solution and Direct Florescent Antibody (DFA, Antibodies Inc., USA) methods and these methods were compared.
💡
Conclusion & Impact:DFA method, which is fast and practical, is considered as an alternative diagnosis method to culture method which requires longer time
🔬Design:Research Article
📍Scope:66 samples
⚙️Variables:Domain Parameters

Abstract

Blastocystis is a widely detected intestinal protozoon throughout the world. In our study, stool samples of 105 patients (male/female:55/50) were examined for the Blastocystis hominis positivity using native-lugol exaamination, trichrome staining, culture in the Ringer's solution and Direct Florescent Antibody (DFA, Antibodies Inc., USA) methods and these methods were compared. Blastocystis protozoon frequency was 28.6% in culture, which was 15.2% for the trichrome staining method, 10.5% for native-lugol examination, and 24.8% for DFA method. 10.25% of 39 stool samples of the children and 39.4% of 66 samples of the adults were culture positive. There was statistically significant difference in the presence of Blastocystis between two age groups (P<0.001). Culture taken as reference, the correlation was strong in the DFA method (r=0.858, P<0.001), intermediate in the trichrome staining (r=0.409, P<0.001) and native-lugol (r=0.403, P<0.01). The DFA sensitivity compared to culture was 83.3% and the specificity 93.7%, and the sensitivity and the specificity of the trichrome staining and Native-lugol methods were lower (43.3-78.7% and 30-77.6%, respectively). The conclusion drawn here is that DFA examination requires shorter time and it is useful in lower protozoon density and where the morphology and the dimensions of the protozoon make the diagnosis harder. DFA method, which is fast and practical, is considered as an alternative diagnosis method to culture method which requires longer time

Özet

Blastocystis dünyada yaygın olarak görülen bağırsak protozoonudur. Çalışmamızda 105 hastaya (erkek/kadın:55/50) ait dışkı örneği nativ-lugol, trikrom, Ringer solüsyonunda kültür ve Direkt Floresan Antikor (DFA, Antibodies Inc., USA) yöntemleri kullanılarak Blastocystis hominis pozitifliği incelenmiş ve bu yöntemler karşılaştırılmıştır. İncelenen örneklerde kültür yöntemi ile Blastocystis protozoonu sıklığı %28.6, bu oran, trikrom boyama yönteminde %15.2, nativ-lugol incelemede %10.5, DFA yönteminde ise %24.8 olarak tespit edilmiştir. Çocuk yaş grubundaki 39 dışkı örneğinin %10.25'inde, erişkin gruptaki 66 örneğin ise %39.4'ünde kültür ile pozitiflik belirlenmiştir. İki yaş grubu arasında Blastocystis varlığı açısından istatisitiksel olarak fark anlamlı bulunmuştur (P<0.001). Kültür yöntemi referans alındığında DFA yöntemi ile korelasyon çok güçlü düzeyde (r=0.858, P<0.001) saptanırken, trikrom boyama (r=0.409, P<0.001) ve nativ-lugol (r=0.403, P<0.01) yöntemleriyle orta düzeyde bir korelasyon belirlenmiştir. DFA yönteminin kültür yöntemine göre duyarlılığı %83.3 özgüllüğü ise %93.7 olarak, trikrom boyama ve nativ-lugol yöntemlerinin duyarlılık ve özgüllükleri ise (sırasıyla %43.3, %78.7 ve %30, %77.6) daha düşük olarak tespit edilmiştir. DFA yönteminin preparat incelemesinin kısa sürede sonuçlandığı, az sayıda protozoon içeren örneklerin incelenmesinde ve de gerek morfolojisi gerekse boyutları nedeniyle protozoonun tanınmasında güçlük yaşanan durumlarda tanı kolaylığı sağlaması açısından yararlı bir yöntem olduğu düşüncesine varılmıştır. Hızlı ve pratik bir yöntem olan DFA yönteminin, uzun sürede sonuçlanan kültür yöntemine alternatif bir tanı yöntemi olabileceği düşünülmektedir

🔖

Cite This Article

TÜRK, S., AL, F. D., KUŞTİMUR, S. (2012). A New Approach to the Diagnosis of Species of Blastocystis: Direct Fluorescent Antibody Method. Kafkas Üniversitesi Veteriner Fakültesi Dergisi, Cilt: 18 - Sayı: 0, 171–174. https://ajindex.com/articles/272998

References (12)

  1. Stensvold CR, Alfellani MA, Norskov-Lauritsen S, Prip K, Victory EL, Maddox C, Nielsen HV, Clark CG: Subtype distribution of Blastocystis isolates from synanthropic and zoo animals and identification of a new Blastocystis sp. subtype. Int J Parasitol, 39 (4): 473-479, 2009.
  2. Parkar, U, Traub RJ, Vitali S, Elliot A, Levecke B, Robertson I, Geurden T, Steele J, Drake B, Thompson RC: Molecular characterization of Blastocystis isolates from zoo animals and their animal-keepers. Vet Parasitol, 169 (1-2): 17, 2010.
  3. Tan KSW, Mirza H, Teo JDW, Wu B, MacAry PA: Current views on the clinical relevance of Blastocystis spp. Curr Infect Dis Rep, 12 (1): 28-38, 2010.
  4. Moghaddam DD, Ghadirian E, Azami M: Blastocystis hominis and the evaluation of efŞcacy of metronidazole and trimethoprim/sulfamethoxazole. Parasitol Res, 96 (4): 273-275, 2005.
  5. Leder K, Hellard ME, Sinclair MI, Fairley CK, Wolfe R: No correlation between clinical symptoms and Blastocystis hominis in immunocompetent individuals. J Gastroenterol Hepatol, 20 (9): 1390-1394, 2005.
  6. Poirier P, Wawrzyniak I, Albert A, Alaoui H, Delbac F, Livrelli V: Development and evaluation of a real-time PCR assay for detection and quantification of Blastocystis parasites in human stool samples: Prospective study of patients with hematological malignancies. J Clin Microbiol, 49 (3): 975-, 2011.
  7. Meloni D, Sanciu G, Poirier P, El Alaoui H, Chabe M, Delhaes L, Dei-Cas E, Delbac F, Luigi Fiori P, Di Cave D, Viscogliosi E: Molecular subtyping of Blastocystis sp. isolates from symptomatic patients in Italy. Parasitol Res, 109 (3): 613-619, 2011.
  8. Dogruman-Al F, Yoshikawa H, Kustimur S, Balaban N: PCR-based sub- typing of Blastocystis isolates from symptomatic and asymptomatic individuals in a major hospital in Ankara, Turkey. Parasitol Res, 106 (1): 263-268, 2009.
  9. Dogruman-Al F, Dagci H, Yoshikawa H, Kurt O, Demirel M: A possible link between subtype 2 and asymptomatic infections of Blastocystis hominis. Parasitol Res, 103 (3): 685-689, 2008.
  10. Coyle CM, Varughese J, Weiss LM, Tanowitz HB: Blastocystis: To treat or not to treat. Clin Infect Dis, 54 (1): 105-110, 2012
  11. Poirier P, Wawrzyniak I, Albert A, El Alaoui H, Delbac F, Livrelli V: Development and evaluation of a real-time PCR assay for detection and quantification of Blastocystis parasites in human stool samples: Prospective study of patients with hematological malignencies. J Clin Microbiol, 49 (3): 975-, 2011.
  12. Dogruman-Al F, Simsek Z, Boorom K, Ekici E, Sahin M, Tuncer C, Kustim