Journals / İzmir Dr. Behçet Uz Çocuk Hastanesi Dergisi / 2013 / Cilt: 3 - Sayı: 2

Frequency of precore/core mutants in chronic Hepatitis B cases

Kronik Hepatit B hastalarında prekor/kor mutantlarının sıklığı

Pages
110–116
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)

Conclusion: As a result, since precore/core mutations were prevalent in samples obtai- ned from the study group, it is our opinion that careful attention must be paid to such mutations during the diagnosis and treatment phases of chronic hepatitis B patients.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Objective: In recent years, the presence of precore/core region mutations were unco- vered by the examination of Hepatitis B Virus (HBV) deoxyribonucleic acid (DNA) that is isolated from patient samples with anti-HBe seroconversion without viral rep- lication loss.
📊
Key Findings & Data:Methods: From a total of 100 samples 69 anti-HBe and HBV DNA positive, and 31 HBeAg and HBV DNA positive samples were analyzed in the study to determine the mutations with the INNO-LIPA method at the Serology laboratory.
💡
Conclusion & Impact:Conclusion: As a result, since precore/core mutations were prevalent in samples obtai- ned from the study group, it is our opinion that careful attention must be paid to such mutations during the diagnosis and treatment phases of chronic hepatitis B patients.
🔬Design:Research Article
📍Scope:100 samples
⚙️Variables:Domain Parameters

Abstract

Objective: In recent years, the presence of precore/core region mutations were unco- vered by the examination of Hepatitis B Virus (HBV) deoxyribonucleic acid (DNA) that is isolated from patient samples with anti-HBe seroconversion without viral rep- lication loss. In this study, the frequency of precore/core mutations were investigated on serum samples obtained from chronic hepatitis B patients. Methods: From a total of 100 samples 69 anti-HBe and HBV DNA positive, and 31 HBeAg and HBV DNA positive samples were analyzed in the study to determine the mutations with the INNO-LIPA method at the Serology laboratory. Statistical analyses were bone with, SPSS v11.5 and chi-square and variance analysis (ANOVA) tests were conducted. Results: The precore mutations were detected in 68, while the core promoter mutati- ons were present in 57 samples. Mutations were detected at the precore region in 11 out of 31 HBeAg positive (35%), and 57 out of 69 anti-HBe positive samples (83%). Likewise, the core promoter region was affected in 10 of 31 HBeAg (32%), and 47 out of 69 anti-HBe positive samples (68%). Both precore and core promoter mutations were substantially higher in the anti-HBe positive group (p<0.05). Conclusion: As a result, since precore/core mutations were prevalent in samples obtai- ned from the study group, it is our opinion that careful attention must be paid to such mutations during the diagnosis and treatment phases of chronic hepatitis B patients.

Özet

Amaç: Son yıllarda viral replikasyon kaybı olmaksızın anti-HBe serokonversiyonu gösteren bazı kronik hepatit B hastalarından izole edilen Hepatit B Virus (HBV) Deoksiribo Nükleik Asit (DNA)’lerinin incelenmesi ile prekor/kor geni üzerindeki mutasyonların varlığı ortaya konmuştur. Bu çalışmada kronik hepatit B hastalarından elde edilen serum örneklerinde prekor/kor mutasyonlarının sıklığı araştırılmıştır. Yöntemler: Bu amaçla seroloji laboratuvarına gelen anti-HBe ve HBV DNA pozitif 69, HBeAg ve HBV DNA pozitif 31 toplam 100 serum örneğinde, INNO-LIPA yönte- miyle prekor/kor mutasyonunun varlığı araştırılmıştır. İstatistiksel analizlerde SPSS 11,5 kullanılarak ki-kare ve varyans analizi testleri yapılmıştır. Bulgular: Altmışsekiz örnekte prekor bölgesinde, 57 örnekte ise kor promoter bölge- sinde mutasyon saptanmıştır. HBeAg pozitif 31 örneğin 11’inde (%35), anti-HBe pozitif 69 örneğin ise 57’sinde (%83) prekor bölgesinde; yine HBeAg pozitif 31 örneğin 10’unda (%32), anti-HBe pozitif 69 örneğin ise 47’sinde (%68) kor promoter bölgesin- de mutasyon tesbit edilmiştir. Hem prekor hem de kor promoter mutasyonları anti- HBe pozitif olan grupta belirgin olarak yüksek bulunmuştur (p<0.05). Sonuç: Sonuç olarak, çalışma grubumuzda prekor/kor mutasyonlarına sık olarak rastlandığından, kronik hepatit B hastalarında tanı ve tedavinin planlanması- izlenmesi aşamalarında bu mutasyonların varlığının araştırılmasının yararlı olacağını düşünmekteyiz.

🔖

Cite This Article

AKÇALI, S., ŞANLIDAĞ, T., BİÇMEN, C., ÖZBAKKALOĞLU, B., AKDUMAN, E. A. (2013). Frequency of precore/core mutants in chronic Hepatitis B cases. İzmir Dr. Behçet Uz Çocuk Hastanesi Dergisi, Cilt: 3 - Sayı: 2, 110–116. https://ajindex.com/articles/215510

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (2)

  1. Stuyver L, De Gendt S, Cadranel JF, Van Geyt C, Van Reybroeck G, Dorent R, et al. Three cases of severe subful- minant hepatitis in heart-transplanted patients after nosoco- mial transmission of a mutant hepatitis B virus. Hepatology 1999;29:1876-83. http://dx.doi.org/10.1002/hep.510290614 PMid:10347133 2. Kıyan M. Hepatit B virusu. S: 86-120.
  2. Kılıçturgay K, Badur S (editörler). Viral Hepatit 2001. 2000, 1. baskı. Deniz Ofset, İstanbul. 3. Scaglioni PP, Melegari M, Wands JR. Biological properties of hepatitis B virus genomes with mutations in the precore promoter and precore open reading frame. Virology 1997;233:374-81. http://dx.doi.org/10.1006/viro.1997.8594 PMid:9217060 4. Brunetto MR, Giarin MM, Oliveri F, Chiaberge E, Baldi M, Alfarano A, et al. Wild-type and e-antigen minus hepatitis B viruses and course of chronic hepatitis. Proc Natl Acad Sci USA 1991;88:4186-90. http://dx.doi.org/10.1073/pnas.88.10.4186 PMid:2034663 PMCid:PMC51623 5. Carman WF, Jacyna MR, Hadziyannis S, Karayiannis P, McGarvey MJ, Makris A, et al. Mutation preventing formati- on of hepatitis Be antigen in patients with chronic hepatitis B infection. Lancet 1989;9:588-91. http://dx.doi.org/10.1016/S0140-6736(89)90713-7 6. Brunetto MR, Giarin M, Saracco G, Oliveri F, Calvo P, Capra G, et al. Hepatitis B virus unable to secrete e antigen and response to interferon in chronic hepatitis B. Gastroenterology 1993;105:845-50. PMid:7689519 7. Buckwold VE, Xu Z, Chen M, Yen TS, Ou JH. Effects of a naturally occurring mutation in the hepatitis B virus basal core promoter on precore gene expression and viral replicati- on. J Virol 1996;70:5845-51. PMid:8709203 PMCid:PMC190601 8. Chu CJ, Keeffe EB, Han SH, Perrillo RP, Min AD, Soldevila- Pico C, et al. Prevalence of HBV precore/core promoter variants in the united States. Hepatology 2003;38:619-28. http://dx.doi.org/10.1053/jhep.2003.50352 PMid:12939588 9. Chan HL, Hussain M, Lok AS. Different hepatitis B virus genotypes are associated with different mutations in core promoter and precore regions during Be antigen seroconver- sion. Hepatology 1999;29:976-84. http://dx.doi.org/10.1002/hep.510290352 PMid:10051506 10. Li JS, Tong SP, Wen YM, Vitvitski L, Zhang Q, Trépo C. Hepatitis B virus genotype A rarely circulates as an HBe- minus mutant: possible contribution of a single nucleotide in the precore region. J Virol 1993;67:5402-10. PMid:8350403 PMCid:PMC237941 11. Rodriguez-Frias F, Buti M, Jardi R, Cotrina M, Viladomiu L, Esteban R, et al.