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Related Concept Videos

Asthma-I: Introduction01:29

Asthma-I: Introduction

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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-II: Pathophysiology and Classification01:26

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Asthma is a prevalent chronic respiratory condition marked by inflammation and hyperresponsiveness of the airways. Its pathophysiology involves complex interactions among inflammatory pathways, immune responses, and neural mechanisms.
Additionally, environmental and genetic factors play crucial roles in determining an individual's susceptibility to asthma and the severity of their condition.
Critical processes in asthma pathophysiology include:
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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.
Asthma is classified as allergic and non-allergic. Allergens such as dust mites, pollen, and pet dander trigger allergic asthma, while factors like cold air, intense emotions, or exercise can induce non-allergic asthma.
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Antiasthma Drugs: Mast Cell Stabilizers and Anti-IgE Drugs01:25

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Asthma is a chronic respiratory condition for which new therapeutic avenues, including anti-inflammatory drugs like mast cell stabilizers and anti-IgE treatments, continue to be developed.
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The diagnosis and management of asthma are comprehensive, encompassing clinical assessments, lung function tests, and pharmacological interventions. Here's an overview:
Clinical Assessment for Asthma:
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Asthma-III: Symptoms and Complications01:24

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Asthma, a common chronic respiratory condition, is classified considering the frequency and severity of symptoms alongside lung function impairment. Understanding this classification is essential for appropriate treatment and management. Here's a detailed look at the classification of asthma and its clinical features and complications:
Classification of Asthma
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Asthma, obesity, and microbiota: A complex immunological interaction.

Laura Machado Menegati1, Erick Esteves de Oliveira2, Bernardo de Castro Oliveira3

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Area of Science:

  • Immunology
  • Microbiology
  • Pulmonology

Background:

  • Obesity and asthma are chronic inflammatory diseases with distinct immune profiles (Th1/Th17 for obesity, Th2 for asthma).
  • Combined, obesity and asthma lead to severe symptoms, frequent exacerbations, and reduced treatment effectiveness, impacting quality of life.
  • Obesity influences asthma phenotypes, varying with atopy, age, and gender, and involves complex factors including the microbiome.

Purpose of the Study:

  • To review the immune mechanisms underlying obesity-aggravated asthma.
  • To explore the role of the gut-lung axis and microbiome in asthma development.
  • To examine the impact of maternal obesity on offspring's gut and lung microbiota and asthma risk.

Main Methods:

  • Literature review focusing on immunological mechanisms and microbiome alterations.
  • Analysis of studies investigating the interplay between obesity, asthma, and the microbiome.
  • Examination of evidence linking specific bacteria to obese-asthmatic phenotypes.

Main Results:

  • Obesity shifts immune responses, potentially exacerbating asthma severity and altering phenotypes.
  • The gut-lung axis and microbiome composition are crucial in asthma susceptibility and pathogenesis.
  • Specific bacteria (e.g., Moraxella catarrhalis, Haemophilus influenza, Streptococcus pneumoniae) are associated with obese-asthmatic traits.

Conclusions:

  • Maternal obesity may program the offspring's microbiome, potentially inducing asthma.
  • Understanding the microbiome's role is key to developing new strategies for obesity-aggravated asthma.
  • Further research into the lung microbiome's influence on immune responses is warranted.