[Immunologic changes in chronic post-transfusion positive hepatitis C and non-A non-B non-C hepatitis]

M Nocito1, J C Erdozain, C Martín-de-Arguila

  • 1Servicio de Gastroenterología, Hospital Ramón y Cajal, Madrid.

Insights

Patients with posttransfusional chronic hepatitis show reduced immunoglobulin production when their lymphocytes are stimulated. This suggests impaired T-B lymphocyte cooperation in hepatitis C and non-A, non-B, non-C infections.

Area of Science:

  • Immunology
  • Virology
  • Hepatology

Context:

  • Posttransfusional chronic hepatitis, including hepatitis C (HCV) and non-A, non-B, non-C, presents immunological challenges.
  • Understanding immune dysregulation is crucial for managing chronic liver disease.

Purpose:

  • To investigate immunological abnormalities in posttransfusional chronic hepatitis by assessing immunoglobulin production.
  • To compare spontaneous and mitogen-stimulated immunoglobulin (IgG, IgA, IgM) production by peripheral blood lymphocytes in patients versus healthy controls.

Summary:

  • Peripheral blood lymphocytes from chronic hepatitis patients and healthy volunteers were cultured with Pokeweed mitogen.
  • While spontaneous immunoglobulin production showed no difference, stimulated production was significantly lower in patients.
  • No correlation was found between immunoglobulin levels, histology, or anti-HCV antibody titers in patients.

Impact:

  • Results indicate a significant decrease in stimulated immunoglobulin production in chronic hepatitis patients, suggesting impaired T-B lymphocyte cooperation.
  • This finding is particularly relevant given that 82.6% of patients tested positive for HCV markers.
  • The study highlights potential immune system deficits in chronic posttransfusional hepatitis, informing future therapeutic strategies.
Abstract

Related Concept Videos

Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

Overview
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...
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 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...
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...