Journals / Turkish Journal of Gastroenterology / 2012 / Cilt: 23 - Sayı: 6

İdrar IgG antikor testlerinin Türk dispeptik hastalarda Helikobakter pilori enfeksiyonunun saptanmasındaki tanısal doğruluğu

The diagnostic accuracy of urine IgG antibody tests for the detection of Helicobacter pylori infection in Turkish dyspeptic patients

Pages
753–758
DOI
—
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

The URINELISA (OD 0.530) and RAPIRUN tests were found useful for the diagnosis of Helicobacter pylori infection in our patients with dyspepsia.

📌 3 Key Takeaways

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Objective & Hypothesis:Background/aims: There is increasing interest in noninvasive tests for the assessment of Helicobacter pylori infection, and urine-based tests have been widely used as noninvasive tests to detect Helicobacter pylori infection.
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Key Findings & Data:Urine and serum specimens of 124 patients were collected and examined for anti-Helicobacter pylori IgG antibody by URINELISA, RAPIRUN (Otsuka Pharmaceutical, Tokyo, Japan) and anti-Helicobacter pylori enzyme-linked immunosorbent assay (Euroimmun, Lübeck, Germany) tests, respectively.
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Conclusion & Impact:The URINELISA (OD 0.530) and RAPIRUN tests were found useful for the diagnosis of Helicobacter pylori infection in our patients with dyspepsia.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Background/aims: There is increasing interest in noninvasive tests for the assessment of Helicobacter pylori infection, and urine-based tests have been widely used as noninvasive tests to detect Helicobacter pylori infection. The aim of this study was to evaluate the adaptation and usefulness of urine antibody enzyme-linked immunosorbent assay and urine card tests in the clinical setting to detect anti-Helicobacter pylori IgG antibody excreted into urine in Turkish adult patients with dyspepsia. Materials and Methods: One-hundred twenty-four patients who were admitted and referred for upper endoscopy to Dokuz Eylül University Hospital, Gastroenterology Clinic were studied. Antrum and corpus biopsies were taken, and Helicobacter pylori status was defined in the presence of at least two positive results of rapid urease test, histopathology and culture. Urine and serum specimens of 124 patients were collected and examined for anti-Helicobacter pylori IgG antibody by URINELISA, RAPIRUN (Otsuka Pharmaceutical, Tokyo, Japan) and anti-Helicobacter pylori enzyme-linked immunosorbent assay (Euroimmun, Lübeck, Germany) tests, respectively. Results: Helicobacter pylori infection was positive in 82 (66.1%) patients according to the gold standard methods. Among 82 Helicobacter pylori infection-positive patients, 69 patients were positive by both URINELISA and RAPIRUN; 109 of 124 patients were positive by anti-Helicobacter pylori IgG enzyme-linked immunosorbent assay. The sensitivity and specificity of URINELISA, RAPIRUN and anti-Helicobacter pylori IgG enzyme-linked immunosorbent assay were 74.4%, 73.2%, 100% and 81.0%, 78.6%, 35.7%, respectively. However, the urine antibody test cut-off values were searched for the best concordance with the results of gold standard methods. This yielded that the sensitivity and specificity of URINELISA with our new cut-off value (0.530) were 90.2% and 71.4%, respectively. Conclusions: As a first study among Turkish adult patients with dyspepsia, the efficacy of URINELISA was related with the determination of a new cut-off value for pretreatment as a screening test value. We suggest that the cut-off value of the URINELISA test should be evaluated and considered for each patient group and each country. The URINELISA (OD 0.530) and RAPIRUN tests were found useful for the diagnosis of Helicobacter pylori infection in our patients with dyspepsia.

Özet

Giriş ve Amaç: Helikobakter pilori enfeksiyonunun değerlendirilmesinde invaziv olmayan testlere ilgi artmış ve idrar temelli testler Helikobakter pilori enfeksiyonunu saptamada invaziv olmayan testler olarak sık kullanılmaktadır. Bu çalışmada Türk erişkin dispeptik hastalarda idrarda salınan anti-Helikobakter pilori IgG antikorunu saptamada hasta başı idrar kart testi ve idrar antikor enzim-bağlı immünosorbent ölçüm testlerinin adaptasyonu ve kullanışlılığının değerlendirilmesi amaçlanmıştır. Gereç ve Yöntem: Dokuz Eylül Üniversitesi Hastanesi, Gastroenteroloji Kliniğine başvuran ve endoskopi endikasyonu konulan 124 hasta çalışmaya alındı. Antrum ve korpus biyopsileri alındı ve hızlı üreaz testi, histopatoloji ve kültürün en az iki test pozitifliğinde Helikobakter pilori olumlu kabul edildi. 124 hastanı n idrar ve serum örnekleri toplandı. Anti- Helikobakter pilori IgG antikor varlığı URINELISA, RAPIRUN (Otsuka Pharmacautical, Tokyo, Japan) ve anti-Helikobakter pilori enzim-bağlı immünosorbent ölçüm (Euroimmun, Lübeck, Germany) testleri ile araştırıldı. Bulgular: Altın standart yöntemlere göre 82 (%66.1) hasta Helikobakter pilori enfeksiyonu pozitif saptandı. 82 Helikobakter pilori enfeksiyonu pozitif hastanın, 69u hem URINELISA hem de RAPIRUN testleri ile, 109 ise anti-Helikobakter pilori IgG enzim-bağlı immünosorbent ölçüm testi ile pozitif bulundu. URINELISA; RAPIRUN ve anti Helikobakter pilori IgG enzim-bağlı immünosorbent ölçümün duyarlılık ve özgüllüğü sı- rasıyla %74.4, %73,2, %100 ve %81.0, %78.6, %35.7 saptandı. Ayrıca, idrar antikor test cut-off değeri altın standard yöntemlerle uyumuna göre en iyi cut-off değeri araştırıldı ve URINELISAnın yeni cut-off değeri (0.530) ile duyarlılık ve özgüllüğü %90.2 ve %71.4 belirlendi. Sonuç: Türk dispeptik hastalarında ilk çalışma olarak, tedavi öncesi tarama testi olarak URINELISAnın etkinliği yeni cut-off değerinin saptanması ile ilişkilidir. URINELISAnın cut-off değeri her bir hasta grubu ve her bir ülke için yeniden değerlendirilmesini önermekteyiz. URINELISA (OD 0.530) ve RAPIRUN testleri dispeptik hastalarımızda Helikobakter pilori enfeksiyonu tanısında kullanılabilir olduğu kanı sına varıldı.

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Cite This Article

GÜRBÜZ, E. D., GÖNEN, C., BEKMEN, N., DÖLEK, D., SOYTÜRK, M., SAĞOL, Ö., ŞİMŞEK, İ., YILMAZ, Ö. (2012). İdrar IgG antikor testlerinin Türk dispeptik hastalarda Helikobakter pilori enfeksiyonunun saptanmasındaki tanısal doğruluğu. Turkish Journal of Gastroenterology, Cilt: 23 - Sayı: 6, 753–758. https://ajindex.com/articles/410295

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