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Related Concept Videos

Hepatitis01:25

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: Introduction01:28

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...
Cytomegalovirus Disease01:27

Cytomegalovirus Disease

Cytomegalovirus (CMV) disease is caused by human cytomegalovirus, a double-stranded DNA virus of the Herpesviridae family. While primary CMV infection is often asymptomatic in immunocompetent individuals, the virus can cause severe disease in neonates and immunocompromised patients. CMV is the most common cause of congenital viral infection in the United States, and a major pathogen in solid organ and hematopoietic stem cell transplant recipients.CMV is transmitted via bodily fluids, sexual...
Retrovirus Life Cycles01:10

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...
Amebiasis01:28

Amebiasis

Entamoeba histolytica, a protozoan parasite, is responsible for intestinal and extraintestinal amebiasis. Though a significant proportion of infections remain asymptomatic, approximately 50 million individuals annually are estimated to present with clinical disease, resulting in up to 100,000 deaths globally. The disease burden is disproportionately high in regions with lower socioeconomic status, such as parts of India, Africa, Mexico, and Latin America.Etiology and TransmissionThe infective...

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Related Experiment Video

Updated: Jul 17, 2026

A Protocol for Analyzing Hepatitis C Virus Replication
13:04

A Protocol for Analyzing Hepatitis C Virus Replication

Published on: June 26, 2014

Hepatitis C in African Americans.

Nikolaos Pyrsopoulos1, Lennox Jeffers

  • 1Division of Hepatology/Liver and Gastrointestinal Transplantation, Veterans Affairs Hospital, Miller School of Medicine, University of Miami, Miami, FL 33125, USA.

Journal of Clinical Gastroenterology
|January 25, 2007
PubMed
Summary

Hepatitis C disproportionately affects African Americans, showing higher prevalence but slower cirrhosis progression. They exhibit reduced response to antiviral treatments, necessitating further research into treatment resistance and transplant outcomes.

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Area of Science:

  • Hepatology
  • Epidemiology
  • Immunology

Background:

  • Chronic hepatitis C is a leading cause of liver disease, cirrhosis, and liver cancer.
  • Hepatitis C virus (HCV) infection exhibits significant racial and ethnic disparities.
  • African Americans experience a higher prevalence of HCV, with distinct viral characteristics.

Purpose of the Study:

  • To investigate the epidemiological disparities of Hepatitis C virus in the African American population.
  • To examine the unique natural history and treatment response patterns of HCV in African Americans.
  • To highlight the underrepresentation of African Americans in clinical trials and potential disparities in liver transplant outcomes.

Main Methods:

  • Review of epidemiological data on Hepatitis C prevalence and outcomes across different racial groups.
  • Analysis of viral load, genotype distribution, and disease progression markers in affected populations.
  • Evaluation of treatment response rates to standard antiviral regimens in African Americans compared to other races.

Main Results:

  • Hepatitis C virus is more prevalent in African Americans, often with higher viral loads and a predominance of genotype 1.
  • Despite slower cirrhosis progression, hepatocellular carcinoma development is more pronounced in this population.
  • African Americans demonstrate significantly reduced response rates to interferon-based antiviral therapies.

Conclusions:

  • Racial disparities in Hepatitis C virus infection necessitate tailored research and clinical approaches.
  • The mechanisms underlying treatment resistance in African Americans require further investigation.
  • Addressing underrepresentation in clinical trials is crucial for understanding and improving liver transplant outcomes in this demographic.