Related Experiment Video

Updated: Aug 15, 2026

Isolation and Characterization of Dendritic Cells and Macrophages from the Mouse Intestine
09:25

Isolation and Characterization of Dendritic Cells and Macrophages from the Mouse Intestine

Published on: May 21, 2012

T-lymphocyte subpopulations in Crohn's disease: definition by monoclonal antibodies

M Pfreundschuh, B Bader, G E Feurle

    Klinische Wochenschrift
    |November 2, 1982
    PubMed

    Thirty-two patients with Crohn's disease (CD) and 32 age- and sex-matched controls were studied for T lymphocytes and T-lymphocyte subpopulations in the peripheral blood, using monoclonal antibodies defining the helper/inducer and the suppressor/cytotoxic compartment. T cells were reduced in patients with CD (P less than 0.05), and this reduction was more pronounced in patients with active disease (P less than 0.01). This T-cell deficiency involves helper and suppressor cells proportionally. The proportion of helper and suppressor cells in CD was independent of disease activity and therapy. We conclude that the T-cell deficiency in CD is a secondary event, and that there is no derangement in the "immunoregulatory ratio" (helper to suppressor cells) in CD which might have served as an explanation for a possible autoimmune mechanism in the pathogenesis of this disease.

    More Related Videos

    Isolating Lymphocytes from the Mouse Small Intestinal Immune System11:28

    Isolating Lymphocytes from the Mouse Small Intestinal Immune System

    Published on: February 28, 2018

    Isolation of CD4+ T-cells and Analysis of Circulating T-follicular Helper (cTfh) Cell Subsets from Peripheral Blood Using 6-color Flow Cytometry07:39

    Isolation of CD4+ T-cells and Analysis of Circulating T-follicular Helper (cTfh) Cell Subsets from Peripheral Blood Using 6-color Flow Cytometry

    Published on: January 7, 2019

    Related Concept Videos

    T Cell Activation and Clonal Selection01:22

    T Cell Activation and Clonal Selection

    T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
    Naive T cells that have not yet encountered an antigen express two primary CD...
    T Cell Types and Functions01:24

    T Cell Types and Functions

    When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
    Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
    Drugs for Treatment of Crohn's Disease in IBD Using Immunomodulatory Agents01:29

    Drugs for Treatment of Crohn's Disease in IBD Using Immunomodulatory Agents

    Crohn's disease is an inflammatory bowel disorder marked by chronic inflammation of the GI tract. Various treatment strategies for Crohn's disease are employed, such as immunomodulatory agents, glucocorticoids, and biologics or anti-TNF therapy. Azathioprine (Imuran), a commonly used immunomodulatory drug for Crohn's disease, is converted in the body to mercaptopurine, which inhibits purine biosynthesis and cell proliferation. Both are utilized in severe cases of Inflammatory Bowel Disease...
    Drugs for Treatment of Crohn's Disease in IBD Using Biologic Agents: Anti-TNF01:24

    Drugs for Treatment of Crohn's Disease in IBD Using Biologic Agents: Anti-TNF

    Tumor Necrosis Factor (TNF), a proinflammatory cytokine, contributes significantly to the inflammation seen in Crohn's disease. It exists as soluble TNF and membrane-bound TNF, with actions mediated through TNF receptors (TNFR). TNFR activation leads to the release of proinflammatory cytokines, T-cell activation, collagen production, and leukocyte migration, all contributing to inflammation in Crohn's disease. Anti-TNF monoclonal antibodies, namely infliximab (Remicade), adalimumab (Humira),...
    Inflammatory Bowel Disease II: Crohn's Disease01:30

    Inflammatory Bowel Disease II: Crohn's Disease

    Introduction
    Inflammatory bowel disease, commonly known as IBD, refers to a collection of disorders that lead to persistent inflammation of the gastrointestinal tract. The two types of IBD are ulcerative colitis, which impacts the colon, and Crohn's disease, which can involve any part of the gastrointestinal segment.
    Crohn's disease
    Crohn's disease is a chronic, systemic inflammatory bowel disease (IBD) that predominantly affects the gastrointestinal tract. It is marked by transmural...
    Inflammatory Bowel Disease III: Crohn's Disease01:25

    Inflammatory Bowel Disease III: Crohn's Disease

    Crohn’s disease is a chronic, relapsing form of inflammatory bowel disease characterized by segmental, transmural inflammation that can affect any part of the gastrointestinal tract. Its pathogenesis arises from a combination of genetic susceptibility, environmental exposures, epithelial barrier dysfunction, and immune dysregulation. Together, these factors lead to an exaggerated immune response against components of the gut microbiome.Genetic and Environmental InfluencesMultiple genetic...