Journals / Turkish Journal of Gastroenterology / 2005 / Cilt: 16 - Sayı: 4

Türkiye’deki kronik hepatit B virüs enfeksiyonlu hastalarda hepatit B virüs genotiplerinin belirlenmesi

Determination of hepatitis B genotypes in patients with chronic hepatitis B virus infection in Turkey

Pages
183–187
DOI
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⚡ TL;DR(Too Long; Didn't Read)

Conclusion: Genotype D with D2 restriction fragment length polymorphism pattern is the dominant hepatitis B virus genotype in all age groups in Turkey.

📌 3 Key Takeaways

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Objective & Hypothesis:Background/aims: There are significant variations in the geographic distribution of hepatitis B virus genotypes throughout the world, and some genotypes are associated with different clinical outcomes.
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Key Findings & Data:Methods: Fifty-four (pediatric: n=25 and adult: n=29) patients with chronic hepatitis B virus infection and with an hepatitis B virus DNA level above 5 pg/ml were entered into the trial.
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Conclusion & Impact:Conclusion: Genotype D with D2 restriction fragment length polymorphism pattern is the dominant hepatitis B virus genotype in all age groups in Turkey.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Genotip · Polimeraz zincir reaksiyonu · Hepatit B virüsü

Abstract

Background/aims: There are significant variations in the geographic distribution of hepatitis B virus genotypes throughout the world, and some genotypes are associated with different clinical outcomes. Eight genotypes of human hepatitis B virus (designated A-H) have been described to date. To determine the hepatitis B virus genotypes in Turkish patients with chronic liver disease and compare the results with clinical characteristics of the patients. Methods: Fifty-four (pediatric: n=25 and adult: n=29) patients with chronic hepatitis B virus infection and with an hepatitis B virus DNA level above 5 pg/ml were entered into the trial. Restriction fragment length polymorphism method was used to determine hepatitis B virus genotype and their restriction fragment length polymorphism patterns. Hepatitis B virus DNA samples of 13 patients were sequenced automatically for further confirmation of restriction fragment length polymorphism results. Results: Genotype D was the dominant genotype in all of our cases. Among six restriction fragment length polymorphism patterns of genotype D reported in the literature, three (D1, D2, D6) were present in our series and D2 was the most frequent restriction fragment length polymorphism pattern (81.5%). No significant differences were observed among different genotype D restriction fragment length polymorphism patterns with respect to patients’ serum ALT, AST, and hepatitis B virus DNA titer, but D2 restriction fragment length polymorphism pattern was significantly more common in younger adults compared to D1 restriction fragment length polymorphism pattern. Conclusion: Genotype D with D2 restriction fragment length polymorphism pattern is the dominant hepatitis B virus genotype in all age groups in Turkey.

Özet

Amaç: Dünya üzerinde hepatit B virüs genotiplerinin coğrafi dağılımı belirgin farklılıklar gösterir ve bu genotiplerin bazılarına eşlik eden özel klinik tablolar izlenebilir. Bugüne kadar insan hepatit B virüslerinde 8 farklı genotip (A’dan H’a kadar) tanımlanmıştır. Kronik karaciğer hastalığı olan Türk hastalarda hepatit B virüs genotiplerini belirlemek ve sonuçları hastaların klinik özellikleri ile karşılaştırmaktır. Yöntem: Kronik hepatit B virüs enfeksiyonlu ve hepatit B virüs DNA değerleri 5 pg/ml üzerinde olan 54 (25 çocuk ve 29 erişkin) hasta çalışmaya alındı. Hepatit B virüs genotiplerini ve «Restriction Fragment Length Polymorphism» paternlerini saptamak için «Restriction Fragment Length Polymorphism» yöntemi uygulandı. Hepatit B virüs DNA örneklerinin «Restriction Fragment Length Polymorphism» sonuçlarını teyit etmek amacıyla otomatik dizi analizleri yapıldı. Bulgular: Hastaların tümünde genotip D mevcudiyeti saptandı. Serimizde, genotip D’ye ait daha önce literatürde belirlenmiş olan 6 farklı «Restriction Fragment Length Polymorphism» paternlerinden sadece 3 tanesi gösterildi ve bunlardan en yaygın olanı «D2 Restriction Fragment Length Polymorphism» paterni idi (%81.5). Değişik genotip D «Restriction Fragment Length Polymorphism» paternlerine ait hastaların serum ALT, AST ve hepatit B virüs DNA düzeyleri karşılaştırıldığında aralarında anlamlı farklılık bulunmadı ancak «D2 Restriction Fragment Length Polymorphism» paterni «D1 Restriction Fragment Length Polymorphism» paternine kıyasla genç olgularda anlamlı olarak daha sık izlendi. Sonuç: Türkiye’de hepatit B virüs genotiplerinin dağılımı incelendiğ inde, tüm yaş gruplarında D genotipinin ve bu genotipe ait «Restriction Fragment Length Polymorphism» paternlerden «D2 Restriction Fragment Length Polymorphism» paterninin baskın olduğu bulunmuştur.

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Cite This Article

ÖZDEMİR, T. F., DUMAN, D., ŞAHİNOĞLU, D. E., AVŞAR, E., EREN, F., ÖZDOĞAN, O., KALAYCI, C., ASLAN, N., BOZDAYI, A. M., TÖZÜN, N. (2005). Türkiye’deki kronik hepatit B virüs enfeksiyonlu hastalarda hepatit B virüs genotiplerinin belirlenmesi. Turkish Journal of Gastroenterology, Cilt: 16 - Sayı: 4, 183–187. https://ajindex.com/articles/411185

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