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Related Concept Videos

Immunodeficiency Diseases01:25

Immunodeficiency Diseases

Immunodeficiency disorders are conditions in which the immune system's ability to fight infectious disease and cancer is compromised or entirely absent. The immune system comprises a complex network of cells, tissues, and organs that work together to protect the body from potentially harmful invaders. When this system is deficient or not functioning properly, it leaves the body susceptible to infections, diseases, or other complications.
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Inflammatory Bowel Disease IV: Clinical Manifestations

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Various diagnostic tests are employed in the diagnostic process for Inflammatory Bowel Disease (IBD), particularly to differentiate between Crohn's disease and ulcerative colitis.
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Type I Diabetes III: Clinical Manifestations

Type 1 diabetes mellitus typically presents with rapid-onset symptoms due to the body’s inability to utilize glucose in the absence of insulin. Since insulin is required for glucose uptake into cells, its deficiency leads to hyperglycemia and cellular energy deprivation, resulting in characteristic clinical features.Polyuria and PolydipsiaOne of the earliest, most prominent symptoms is polyuria (excessive urination). When blood glucose concentrations rise above the renal threshold, the kidneys...
Autoimmune Disorders01:29

Autoimmune Disorders

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Concept and Mechanism of Autoimmune Diseases
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Characterization of Thymus-dependent and Thymus-independent Immunoglobulin Isotype Responses in Mice Using Enzyme-linked Immunosorbent Assay
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IgA deficiency: correlation between clinical and immunological phenotypes.

Asghar Aghamohammadi1, Taher Cheraghi, Mohammad Gharagozlou

  • 1Department of Pediatrics, Division of Immunology and Allergy, Children Medical Center Hospital, Tehran University of Medical Sciences, 62 Gharib St, Keshavarz Blvd, 14194, Tehran, Iran. aghamohammadi@sina.tums.ac.ir

Journal of Clinical Immunology
|August 7, 2008
PubMed
Summary
This summary is machine-generated.

Selective IgA deficiency (IGAD) patients with other immune defects experience more infections and bronchiectasis. Subclassifying IGAD aids in managing patient care and monitoring for complications.

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Area of Science:

  • Immunology
  • Clinical Medicine

Background:

  • Selective IgA deficiency (IGAD) is the most common primary antibody deficiency.
  • While often asymptomatic, IGAD can lead to recurrent infections, allergies, and autoimmune conditions.
  • This study focuses on Iranian patients with symptomatic IGAD.

Purpose of the Study:

  • To investigate the clinical manifestations of symptomatic IgA deficiency in Iranian patients.
  • To correlate clinical features with immune function.
  • To assess the impact of associated immune defects on patient outcomes.

Main Methods:

  • Evaluation of 37 patients (aged 4-32 years) with symptomatic IGAD over 131 patient-years.
  • Clinical data collection including infections, allergies, and autoimmune diseases.
  • Assessment of immune function, including response to pneumococcal vaccination and classification into isolated IGAD versus IGAD with other immune defects.

Main Results:

  • Recurrent infections were the most common presentation (27/37), followed by allergies (31/37) and autoimmune diseases (10/37).
  • Patients with IGAD and other immune defects (Group 1) had significantly more lower respiratory tract infections and bronchiectasis compared to those with isolated IGAD (Group 2).
  • One-fourth of vaccinated patients showed hyporesponsiveness to pneumococcal vaccine, with four developing bronchiectasis.

Conclusions:

  • Subclassifying IGAD based on associated immune defects is crucial for predicting morbidity.
  • Patients with IGAD and additional immune defects, particularly defective specific antibody production, face higher risks of recurrent infections and bronchiectasis.
  • Effective monitoring and tailored medical care are essential for managing these high-risk patients.