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HBV RNA: Serum HBV RNA, karaciger cccDNA trankripsiyonel aktivitesini yansitir.
It is noteworthy that inhibition of cccDNA synthesis is not affected by current nucleoside analogue therapy, as only DNA synthesis is targeted.
Locarnini et al., "Persistence of cccDNA during the natural history of chronic hepatitis B and decline during adefovir dipivoxil therapy," Gastroenterology, vol.
Ayrica belirtmek gerekir ki histon deasetilaz inhibitorlerinin OBI reaktivasyonlari ile iliskili olduguna dair veriler, HBV reaktivasyonunun kontrolunde viral cccDNA minikromozomunun yapi ve dinamigini etkileyen epigenetik modifikasyonlarin rolune iliskin indirekt kanitlari olusturmaktadir.
However, absolute cure, which includes complete clearance of cccDNA and other integrated HBV DNA, is the ultimate goal.
Lu et al., "Serum hepatitis B surface antigen is correlated with intrahepatic total HBV DNA and cccDNA in treatment-naive patients with chronic hepatitis B but not in patients with HBV related hepatocellular carcinoma," Journal of Medical Virology, vol.
The concentration of HBsAg in serum reflects the transcriptional activity of the cccDNA and the degree of integration of HBV into the host genome .
Real-time quantitative PCRs (qPCRs) were performed using the LightCycler[TM] system (Roche, Manheim, Germany) and HBV-DNA and cccDNA were detected using specific PCR primers (Table 1).
Contributors discuss the HBV and HDV life cycles, their unique characteristics (e.g., the formation of HBV cccDNA), the immune responses they elicit, and the challenges they present to the development of antiviral treatments.
It has been suggested that HBsAg quantification reflects the concentration of the covalently closed circular DNA (cccDNA), the template of hepatitis B virus transcription, which plays a key role in the life cycle of the virus and permits the persistence of infection (Martinot-Peignoux et al.
The combined pipeline is expected to target the three pillars necessary to develop a curative regimen for HBV, including assets focused on suppressing HBV replication, reactivating and stimulating the host immune response directed at HBV and eliminating covalently closed circular DNA (cccDNA).
The rcDNA can be converted into a stable covalently closed circular DNA (cccDNA) in the nucleus, after which it serves as the original template for viral replication and plays an important role in HBV persistence in the nucleus of infected hepatocytes (7), which may explain HBV reactivation and why HBV cannot be completely eliminated by antiviral agents (7, 8).
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