Related Experiment Video
Updated: Aug 1, 2025

09:29
Early Viral Entry Assays for the Identification and Evaluation of Antiviral Compounds
Published on: October 29, 2015
30.3K
Emerging drugs for hepatitis D.
Onur Keskin1, Cihan Yurdaydin2
1Department of Gastroenterology, Hacettepe University, Ankara, Turkey.
Expert Opinion on Emerging Drugs
|April 25, 2023
Summary
New treatments for chronic hepatitis delta (CHD) show promise. Bulevirtide, lonafarnib, nucleic acid polymers, and pegIFN lambda offer improved antiviral efficacy and safety profiles for managing this severe liver disease.
Area of Science:
- Hepatology
- Virology
- Pharmacology
Background:
- Chronic hepatitis delta (CHD) is the most severe form of chronic viral hepatitis.
- Historically, treatment relied on pegylated interferon alfa (pegIFN).
Purpose of the Study:
- To review current and emerging therapeutic agents for CHD.
- To evaluate the efficacy and safety of novel CHD treatments.
Main Methods:
- Review of clinical trial data for bulevirtide, lonafarnib, nucleic acid polymers, and pegIFN lambda.
- Analysis of antiviral efficacy, safety profiles, and combination therapy potential.
Main Results:
- Bulevirtide demonstrates safety and increasing efficacy with duration; combination with pegIFN shows short-term high efficacy.
- Lonafarnib inhibits viral assembly, with improved efficacy when combined with ritonavir and pegIFN; associated with GI toxicity.
- Nucleic acid polymers achieved HBsAg clearance in a significant patient proportion.
- PegIFN lambda shows fewer side effects than traditional pegIFN, with sustained viral response in one-third of patients post-treatment.
Conclusions:
- Novel agents like bulevirtide, lonafarnib, nucleic acid polymers, and pegIFN lambda represent significant advancements in CHD treatment.
- Combination therapies and agents with improved safety profiles offer new hope for managing severe viral hepatitis.
Keywords:
Chronic hepatitis deltabulevirtide, lonafarnibnucleic acid polymerspegylated interferon alfapegylated interferon lambdatreatmentMore Related Videos
Related Concept Videos
Hepatic Drug Excretion: Enterohepatic Cycling
1.6K
Enterohepatic cycling involves the active secretion of drugs and their metabolites into the bile via transporters in the canalicular membrane of hepatocytes. This secretion is an integral part of the digestive process, releasing these substances into the gastrointestinal (GI) tract.
Post-release drugs and metabolites can be reabsorbed into the body from the intestine. For conjugated metabolites like glucuronides, reabsorption requires enzymatic hydrolysis by intestinal microflora. This...
Post-release drugs and metabolites can be reabsorbed into the body from the intestine. For conjugated metabolites like glucuronides, reabsorption requires enzymatic hydrolysis by intestinal microflora. This...
1.6K
Subviral Agents
53
Subviral agents are infectious entities that resemble viruses but lack one or more viral components, such as a capsid or essential replication machinery. These agents include viroids, prions, and satellites, each possessing distinct structural and functional characteristics that influence their mode of infection and replication.Viroids are the simplest subviral agents, consisting of circular, single-stranded RNA molecules without a protein coat. They exclusively infect plants, relying entirely...
53
Hepatic Drug Excretion: Influencing Factors
171
The biliary system of the liver, crucial for bile secretion and drug excretion, comprises intrahepatic bile ducts that merge to form the common hepatic duct. This duct, carrying hepatic bile, combines with the cystic duct, draining the gallbladder and forming the common bile duct, which empties into the duodenum. Bile, produced by hepatic cells lining the bile canaliculi, is composed primarily of water, bile salts, pigments, electrolytes, and lesser amounts of cholesterol and fatty acids. Bile...
171
Retrovirus Life Cycles
46.3K
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...
46.3K
Viruses with RNA Genomes
60
RNA viruses are categorized into positive-strand, negative-strand, or double-stranded groups based on their genomic structure and replication mechanisms. This classification dictates how they exploit host cellular machinery for protein synthesis and replication. Some RNA viruses also utilize reverse transcription as part of their life cycle, further diversifying their replication strategies.Positive-Strand RNA VirusesPositive-strand RNA viruses have genomes that function directly as messenger...
60

