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Asthma-I: Introduction01:29

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Asthma is a chronic respiratory ailment that requires careful management due to its varying symptoms and influencing factors. It is characterized by airway inflammation, bronchial hyperresponsiveness, and reversible airflow obstruction, leading to symptoms like wheezing, shortness of breath, chest tightness, and coughing. The symptom frequency and intensity may vary considerably over time. It is also linked to immune system responses to allergens and irritants, highlighting the complex...
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Asthma: Pathogenesis and Management01:20

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Asthma is a chronic pulmonary condition involving inflammation of the airways, hyper-reactivity, and reversible obstruction of the airways. This condition can significantly impact a person's quality of life, making breathing difficult and leading to distressing symptoms.
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Asthma-III: Symptoms and Complications01:24

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Asthma Detection Research Based on Voice Signal Processing and Machine Learning
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Glucocorticoid-resistant asthma.

Tuck-Kay Loke1, Ana R Sousa, Christopher J Corrigan

  • 1Department of Respiratory Medicine and Allergy, Guy's Hospital, 5th Floor, Thomas Guy House, St. Thomas Street, London SE1 9RT, UK. tkloke@doctors.org.uk

Current Allergy and Asthma Reports
|March 15, 2002
PubMed
Summary
This summary is machine-generated.

Glucocorticoid resistance in asthma affects a subset of patients, characterized by poor response to standard anti-inflammatory treatments. Understanding the molecular mechanisms, like abnormal activator protein I regulation and glucocorticoid receptor variants, is key to developing new therapies.

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Area of Science:

  • Pulmonology
  • Immunology
  • Molecular Biology

Background:

  • Glucocorticoids are the primary anti-inflammatory treatment for asthma.
  • A subset of asthma patients exhibit glucocorticoid resistance, showing increased bronchial hyperreactivity and persistent symptoms.
  • Current definitions and therapeutic trial standards for glucocorticoid resistance are not fully established.

Purpose of the Study:

  • To investigate the molecular mechanisms underlying glucocorticoid resistance in asthma.
  • To explore the role of activator protein I and glucocorticoid receptor isoforms in this condition.

Main Methods:

  • Research involved in vivo and in vitro studies of cellular responses to glucocorticoids.
  • Focus on the regulation of activator protein I and the identification of glucocorticoid receptor beta (GR beta).

Main Results:

  • Glucocorticoid resistance is linked to altered cellular responses to glucocorticoids.
  • Abnormal regulation of activator protein I is implicated in the molecular mechanism, potentially in T cells and monocytes.
  • An alternatively spliced isoform, GR beta, has been identified, suggesting a role in glucocorticoid resistance pathology.

Conclusions:

  • Glucocorticoid resistance in asthma involves complex molecular alterations.
  • Further understanding of glucocorticoid action mechanisms and receptor variants is necessary for developing alternative therapies.