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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 I: Introduction01:28

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Asthma is a chronic inflammatory disorder of the airways characterized by variable airflow obstruction and heightened bronchial responsiveness to a wide range of triggers. The underlying inflammation leads to airway swelling, mucus hypersecretion, and smooth muscle constriction, all of which narrow the airway lumen and impede airflow. Clinically, asthma presents with recurrent episodes of wheezing, shortness of breath, chest tightness, and coughing, symptoms that typically vary in intensity and...
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Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features01:24

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Chronic bronchitis is a key phenotype of chronic obstructive pulmonary disease (COPD), characterized by airway-centered inflammation and mucus overproduction. It develops from long-term exposure to harmful particles or gases, most commonly cigarette smoke, which triggers a persistent inflammatory response.Cellular and Structural ChangesInflammation initially affects the large bronchi and later the smaller airways, with infiltration by immune cells, including neutrophils, macrophages, and...
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Chronic Obstructive Pulmonary Disease I: Introduction01:23

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Chronic obstructive pulmonary disease is a common, preventable, and treatable respiratory disorder characterized by persistent symptoms and progressive airflow limitation. This limitation results from a combination of small-airway disease (obstructive bronchiolitis) and parenchymal destruction (emphysema), both driven by chronic inflammation from exposure to harmful particles or gases.The disease includes two main pathological entities: emphysema, marked by destruction of alveolar walls and...
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Asthma III: Clinical Manifestations01:13

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Asthma presents with a characteristic pattern of episodic respiratory symptoms that reflect underlying airway inflammation, bronchoconstriction, and mucus hypersecretion. Although severity varies among individuals, certain clinical manifestations are considered hallmarks of the disorder and often guide diagnosis and assessment.Respiratory SymptomsA persistent cough is one of the most common early features of asthma. It is frequently dry and tends to worsen at night or in the early morning,...
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Chronic Obstructive Pulmonary Disease-III: Symptoms and Complications.01:25

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Understanding the variety of primary symptoms and systemic complications that characterize chronic obstructive pulmonary disease (COPD) is crucial for healthcare professionals.
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Primary Symptoms of COPD:
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Updated: May 1, 2026

A Component-resolved Diagnostic Approach for a Study on Grass Pollen Allergens in Chinese Southerners with Allergic Rhinitis and/or Asthma
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Increased Risk of Allergic Rhinitis Among Coal Mine Workers: A Cross-Sectional Study.

Xiaozhe Yang1,2,3, Zhongyi Wang1,2,3, Meirong Yang4

  • 1Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital Capital Medical University Beijing China.

Laryngoscope Investigative Otolaryngology
|April 30, 2026
PubMed
Summary
This summary is machine-generated.

Occupational exposure to airborne pollutants in coal mines is linked to a higher prevalence of allergic rhinitis (AR) in miners. This study highlights the need for improved AR management strategies in mining environments.

Keywords:
allergic rhinitismining workforceprotective factorrisk factor

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Area of Science:

  • Environmental Epidemiology
  • Occupational Health
  • Respiratory Medicine

Background:

  • Allergic rhinitis (AR) is a common respiratory condition.
  • Mining workers experience significant exposure to airborne pollutants.
  • Limited data exists on AR prevalence in mining-intensive regions.

Purpose of the Study:

  • To investigate the association between occupational air pollutant exposure and AR prevalence among coal miners in northern China.
  • To identify risk factors and protective elements influencing AR development in this population.

Main Methods:

  • A cross-sectional survey was conducted among 538 mining workers in Ordos city, northern China.
  • AR prevalence was assessed via self-report.
  • Logistic regression models were used to analyze crude and adjusted associations.

Main Results:

  • AR was identified in 28.07% of the surveyed miners.
  • Increased AR risk was associated with longer work duration in mining (OR: 1.041), alcohol consumption (OR: 1.675), food allergies (OR: 5.614), and family history of atopy (OR: 5.511).
  • Higher educational attainment showed a protective effect (OR: 0.54).

Conclusions:

  • Chronic occupational exposure in coal mines is associated with an increased risk of allergic rhinitis.
  • The findings provide epidemiological evidence to inform AR management in occupational mining settings.