[MCTD (mixed connective tissue disease)]

K Tanimoto1

  • 1Health Service Center, University of Saitama.

Insights

Mixed connective tissue disease (MCTD) is characterized by a specific antibody and symptoms overlapping with other autoimmune conditions. While generally manageable with corticosteroids, MCTD can lead to high mortality, particularly with pulmonary hypertension.

Area of Science:

  • Rheumatology
  • Immunology
  • Internal Medicine

Context:

  • Mixed connective tissue disease (MCTD) is a distinct autoimmune disorder.
  • Characterized by the presence of anti-nuclear RNP antibodies.
  • Presents with overlapping symptoms of SLE, PSS, and PM/DM.

Purpose:

  • To summarize the key features and clinical presentation of MCTD.
  • To highlight common symptoms such as Raynaud's phenomenon and hand swelling.
  • To discuss the general prognosis and mortality factors in MCTD patients.

Summary:

  • MCTD exhibits unique serological markers and a combination of clinical manifestations.
  • Raynaud's phenomenon and digital swelling are highly prevalent.
  • Corticosteroid treatment is often effective, but pulmonary hypertension is associated with increased mortality.

Impact:

  • Provides a concise overview of MCTD for clinicians and researchers.
  • Emphasizes the importance of recognizing MCTD's distinct features.
  • Underscores the need for vigilant monitoring, especially for pulmonary hypertension.

Related Concept Videos

Connective Tissue Cell Types01:22

Connective Tissue Cell Types

Connective tissue develops from the mesoderm of a developing embryo and consists of cells, fibers, and ground substance: a gel-like material containing large complexes of carbohydrates and proteins. Connective tissue was first identified as a separate tissue family in the 18th century, and Johannes Peter Muller coined the term connective tissue.
Fat cells (adipocytes), smooth muscle cells (myoblasts), and bone cells (osteoblasts) are some connective tissue cell types. Some immune system cells...
Chronic Bowel Disorders: Introduction01:17

Chronic Bowel Disorders: Introduction

Chronic bowel diseases are a group of long-term conditions affecting the digestive tract, characterized by inflammation and damage to the gut lining. These conditions primarily include irritable bowel syndrome and inflammatory bowel disease.
Irritable Bowel Syndrome (IBS) is a common disorder affecting the gastrointestinal tract. The distinctive feature is recurrent abdominal pain associated with altered bowel movements, manifesting as constipation, diarrhea, or fluctuating between both. The...
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),...
Hypersensitivity Reactions: Delayed Hypersensitivity Reactions01:29

Hypersensitivity Reactions: Delayed Hypersensitivity Reactions

Delayed-Type Hypersensitivity (DTH), or Type IV hypersensitivity, is a cell-mediated immune response. It occurs when T cells, rather than antibodies, mediate a reaction to specific antigens. It is characterized by a delayed onset (1-2 days) and involves the recruitment of macrophages to the inflammation site.The initiation of a DTH response begins with the sensitization of T cells. During this phase, which lasts at least 1-2 weeks, antigen-specific T cells are activated, clonally expanded, and...
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...