Hepatitis B and C

Wikrom Karnsakul1, Kathleen B Schwarz2

  • 1Pediatric Liver Center, Department of Pediatrics, Johns Hopkins University School of Medicine, 600 North Wolfe Street, CMSC 2-117, Baltimore, MD 21287, USA.

Insights

Chronic viral hepatitis, caused by Hepatitis B (HBV) and C (HCV) viruses, poses a global health challenge. While effective treatments exist for HCV, new therapies are needed for HBV to achieve a functional cure.

Area of Science:

  • Hepatology
  • Virology
  • Public Health

Background:

  • Chronic viral hepatitis represents a significant global health concern and economic burden.
  • Hepatitis B virus (HBV) and Hepatitis C virus (HCV) are the primary etiologies of chronic viral hepatitis in the United States.
  • Many infections remain asymptomatic until adulthood, complicating early detection and intervention.

Purpose of the Study:

  • To review the current therapeutic landscape for chronic viral hepatitis caused by HBV and HCV.
  • To highlight the advancements in HCV treatment and the ongoing development of novel therapies for HBV.
  • To underscore the unmet need for more effective treatments, particularly for achieving a functional cure in HBV infection.

Main Methods:

  • Review of existing literature on antiviral therapies for HBV and HCV.
  • Analysis of current treatment guidelines and clinical trial outcomes.
  • Synthesis of data on approved medications and emerging direct-acting antiviral agents.

Main Results:

  • Effective therapies, including pegylated interferon and ribavirin, are available for HCV, with direct-acting antivirals in pediatric trials.
  • Approved treatments for HBV include alpha-interferon, lamivudine, adefovir, tenofovir, and entecavir.
  • Current HBV therapies rarely achieve a functional cure, indicating a need for improved treatment strategies.

Conclusions:

  • Significant progress has been made in managing HCV, but HBV treatment remains suboptimal.
  • The development of novel therapeutic agents is crucial for achieving a functional cure for HBV.
  • Continued research is essential to address the global health threat posed by chronic viral hepatitis.

Related Concept Videos

Viruses with RNA Genomes01:29

Viruses with RNA Genomes

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...
1.1K
Diseases of the Liver and Gallbladder01:26

Diseases of the Liver and Gallbladder

Liver and gallbladder diseases are a significant health concern, with prominent conditions including cirrhosis, hepatitis, non-alcoholic fatty liver disease (NAFLD), and gallstones. Jaundice is a common manifestation of liver and biliary disease.
Cirrhosis is characterized by the scarring of hepatic lobules in the liver, which are replaced by fibrous tissue, affecting the liver's normal functioning. NAFLD, on the other hand, is caused by an excessive build-up of fat in the liver, not...
2.2K
Hepatic Drug Excretion: Enterohepatic Cycling01:17

Hepatic Drug Excretion: Enterohepatic Cycling

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...
3.1K
Sexually Transmitted Infections01:26

Sexually Transmitted Infections

Sexually transmitted infections (STIs) are diseases transmitted primarily through unsafe sexual interactions. Bacteria, viruses, or parasites cause them and can result in severe health complications if untreated.ChlamydiaThe bacterium Chlamydia trachomatis is responsible for the disease Chlamydia, the most common STI in the United States. This peculiar pathogen requires human cells to reproduce, residing intracellularly. The initial infection often goes unnoticed because it typically does not...
1.4K