Related Experiment Video
Updated: Jul 5, 2026

04:11
Real-Time Polymerase Chain Reaction-Based Detection and Quantification of Hepatitis B Virus DNA
Published on: December 15, 2023
[Acute hepatitis B: is antiviral therapy indicated? Two case reports]
J Girke1, H Wedemeyer, J Wiegand
1Zentrum Innere Medizin, Abteilung Gastroenterologie, Hepatologie und Endokrinologie, Med. Hochschule Hannover.
Deutsche Medizinische Wochenschrift (1946)
|May 21, 2008
Summary
Entecavir and adefovir show promise in treating severe acute hepatitis B when initial lamivudine therapy fails. These nucleoside analogs may be effective for patients with prolonged prothrombin times, warranting further study.
Area of Science:
- Hepatology
- Virology
- Pharmacology
Background:
- The efficacy of entecavir and adefovir in treating acute hepatitis B remains largely unknown.
- Acute hepatitis B can lead to severe liver damage and impaired liver function.
Observation:
- Two patients with severe acute hepatitis B presented with jaundice, rash, and abdominal discomfort.
- Laboratory findings revealed significant liver cell damage, elevated transaminases and bilirubin, impaired liver synthesis, and high viral loads.
Findings:
- Initial treatment with lamivudine did not lead to adequate recovery in either patient.
- Switching to entecavir or adding adefovir resulted in clinical improvement, suggesting their efficacy when lamivudine fails.
Implications:
- Entecavir and adefovir may be effective therapeutic options for acute hepatitis B, particularly in cases of lamivudine failure.
- Antiviral therapy is recommended for acute hepatitis B patients with significantly prolonged prothrombin times.
- Further large-scale studies are needed to establish consensus on antiviral therapy for acute hepatitis B.
Related Concept Videos
Hepatitis
Hepatitis is an inflammatory condition of the liver most commonly caused by hepatotropic viruses (A–E), though non-infectious causes such as alcohol and drugs also exist.Hepatitis AHepatitis A virus (HAV) is a non-enveloped RNA virus of the Picornaviridae family. It is primarily transmitted via the fecal-oral route, typically through ingestion of contaminated food or water. After ingestion, HAV enters the bloodstream through the oropharynx or intestinal epithelium and reaches the liver. The...
Viral Hepatitis I: Introduction
Viral hepatitis is an inflammatory condition of the liver caused by infection with hepatotropic viruses, most commonly hepatitis A, B, C, D, and E. Despite variations in structure and transmission, all viruses mentioned infect hepatocytes and provoke immune responses that can hinder liver function. Additionally, some non-hepatotropic viruses can also lead to hepatic inflammation.Hepatitis A VirusHepatitis A virus (HAV) is transmitted through the fecal–oral route, typically by ingestion of food...
Inhibitors of Viral Protein Synthesis
Protein synthesis is indispensable for viral replication, as viruses lack the cellular machinery required for this process and must hijack the host's translational apparatus. In response, host cells deploy a critical innate immune defense involving interferons, specialized cytokines that play a central role in inhibiting viral propagation.Upon viral detection, infected cells release interferons that bind to receptors on adjacent uninfected cells, activating the JAK-STAT signaling pathway and...
Antiviral Nucleoside Inhibitors
Antiviral Nucleoside InhibitorsAntiviral nucleoside inhibitors are structural analogs of natural nucleosides that interfere with viral DNA or RNA synthesis. These compounds selectively target viral polymerases due to their resemblance to host nucleosides, thereby disrupting viral genome replication.Mechanism of Acyclovir ActionAcyclovir is a guanosine analog with a three-carbon acyclic side chain. It selectively targets herpes simplex virus type 1 (HSV-1), herpes simplex virus type 2 (HSV-2),...
Retrovirus Life Cycles
Retroviruses have a single-stranded RNA genome that undergoes a special form of replication. Once the retrovirus has entered the host cell, an enzyme called reverse transcriptase synthesizes double-stranded DNA from the retroviral RNA genome. This DNA copy of the genome is then integrated into the host’s genome inside the nucleus via an enzyme called integrase. Consequently, the retroviral genome is transcribed into RNA whenever the host’s genome is transcribed, allowing the retrovirus to...
Myocarditis III: Medical Management
Myocarditis: Comprehensive Medical ManagementMyocarditis, the heart muscle inflammation, requires a comprehensive medical management strategy that addresses the underlying cause, provides supportive care, manages symptoms, and reduces cardiac workload.Infections and Autoimmune CausesAdminister appropriate antimicrobial therapy when an infectious agent causes myocarditis. For instance, penicillin treats infections caused by Group A Streptococcus. In cases where autoimmune processes are...
