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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...
Cirrhosis II: Pathophysiology01:24

Cirrhosis II: Pathophysiology

Cirrhosis is a progressive chronic liver injury caused by prolonged inflammation, excessive fibrotic remodeling, and impaired regeneration. Over time, repeated hepatic insults disrupt the liver’s architecture and function, leading to reduced blood flow, impaired bile drainage, and diminished metabolic capacity.Pathophysiology of cirrhosisCirrhosis arises from three main responses to chronic liver damage: inflammation, immune activation, and hepatocyte death. These processes lead to structural...
Immune Response Against Viral Pathogens01:29

Immune Response Against Viral Pathogens

The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
Cirrhosis I: Introduction01:23

Cirrhosis I: Introduction

Cirrhosis is a chronic, irreversible liver disease characterized by the widespread replacement of healthy liver tissue with fibrotic scar tissue and the formation of regenerative nodules.Etiology of cirrhosisCirrhosis results from sustained liver injury that triggers progressive fibrosis and structural remodeling. The underlying causes are diverse, encompassing common and less frequent clinical conditions. Regardless of the origin, all causes lead to chronic inflammation, hepatocyte loss, and...
Cytotoxic T Cells-mediated Immune Response01:27

Cytotoxic T Cells-mediated Immune Response

Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...

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Related Experiment Video

Updated: May 16, 2026

Analysis of HBV-Specific CD4 T-cell Responses and Identification of HLA-DR-Restricted CD4 T-Cell Epitopes Based on a Peptide Matrix
10:37

Analysis of HBV-Specific CD4 T-cell Responses and Identification of HLA-DR-Restricted CD4 T-Cell Epitopes Based on a Peptide Matrix

Published on: October 20, 2021

Immunity and hepatitis C: a review.

Rebecca R Terilli1, Andrea L Cox

  • 1Division of Infectious Diseases, Johns Hopkins University School of Medicine, Rangos Building, Suite 536, 855 N Wolfe St, Baltimore, MD 21205, USA.

Current HIV/AIDS Reports
|November 27, 2012
PubMed
Summary

Hepatitis C virus (HCV) infection is more severe in people with HIV. Understanding immune responses to HCV in HIV-positive individuals is key for developing treatments and vaccines.

Area of Science:

  • Immunology
  • Virology
  • Hepatology

Background:

  • Hepatitis C virus (HCV) causes chronic hepatitis and liver cancer globally.
  • HCV is prevalent in individuals with HIV due to shared transmission routes.
  • HIV-infected individuals have lower rates of spontaneous HCV clearance and more frequent complications.

Purpose of the Study:

  • To review recent advances in understanding immune responses to HCV in individuals with and without HIV.
  • To explore the interaction between HCV and the host immune system.
  • To inform the development of novel vaccines and therapies.

Main Methods:

  • Literature review of recent research on HCV immunology.
  • Analysis of innate and adaptive immune responses in HIV-positive and HIV-negative individuals.

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The CYP2D6 Animal Model: How to Induce Autoimmune Hepatitis in Mice
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The CYP2D6 Animal Model: How to Induce Autoimmune Hepatitis in Mice

Published on: February 3, 2012

Related Experiment Videos

Last Updated: May 16, 2026

Analysis of HBV-Specific CD4 T-cell Responses and Identification of HLA-DR-Restricted CD4 T-Cell Epitopes Based on a Peptide Matrix
10:37

Analysis of HBV-Specific CD4 T-cell Responses and Identification of HLA-DR-Restricted CD4 T-Cell Epitopes Based on a Peptide Matrix

Published on: October 20, 2021

Stem Cell-Derived Viral Ag-Specific T Lymphocytes Suppress HBV Replication in Mice
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Stem Cell-Derived Viral Ag-Specific T Lymphocytes Suppress HBV Replication in Mice

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The CYP2D6 Animal Model: How to Induce Autoimmune Hepatitis in Mice
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Published on: February 3, 2012

  • Synthesis of findings on HCV pathogenesis and host immune interaction.

    • Main Results:

    • HIV infection impairs the host's ability to control HCV infection.
    • Complications of HCV, including liver disease, are more severe in coinfected individuals.
    • Immune responses play a critical role in HCV clearance and persistence.

    Conclusions:

    • Further research into immune responses to HCV in coinfected populations is crucial.
    • Understanding these interactions can lead to improved treatments for Hepatitis C.
    • Insights gained may guide the development of effective HCV vaccines.