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Related Concept Videos

Chronic Obstructive Pulmonary Disease-II: Pathophysiology01:20

Chronic Obstructive Pulmonary Disease-II: Pathophysiology

Chronic Obstructive Pulmonary Disease (COPD) pathophysiology is intricate and multifaceted, involving a complex interplay of physiological processes. Understanding these mechanisms is crucial for effectively managing and treating COPD. Here is an in-depth look at the critical elements in the pathophysiology of COPD:
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Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies

Assessing and diagnosing Chronic Obstructive Pulmonary Disease (COPD) involves a detailed approach that includes a comprehensive review of medical history, physical examination, and a variety of diagnostic tests. This thorough evaluation is essential to ensure an accurate diagnosis and guide effective management strategies.
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Chronic Obstructive Pulmonary Disease II: Emphysema01:23

Chronic Obstructive Pulmonary Disease II: Emphysema

Emphysema, a major phenotype of chronic obstructive pulmonary disease (COPD), is characterized by irreversible destruction of alveolar walls and permanent enlargement of distal airspaces. Unlike chronic bronchitis, which primarily affects the airways, emphysema predominantly involves the lung parenchyma, where structural damage leads to airflow limitation.PathophysiologyIt most commonly results from prolonged exposure to cigarette smoke and other toxic gases, particularly cigarette smoke.
Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features01:24

Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features

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...
Chronic Obstructive Pulmonary Disease-I: Introduction01:20

Chronic Obstructive Pulmonary Disease-I: Introduction

Chronic Obstructive Pulmonary Disease (COPD) is a long-lasting respiratory condition requiring continuous attention and care. It is a progressive lung disease that leads to breathing challenges due to airflow obstruction. It manifests as persistent respiratory symptoms and restricted airflow resulting from abnormalities in the airways and alveoli, usually due to long-term exposure to harmful particles or gases. COPD mainly consists of two primary conditions: emphysema and chronic bronchitis.
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Chronic obstructive pulmonary disease (COPD) is a group of lung conditions that progressively worsen over time, including chronic bronchitis and emphysema. This cluster of diseases collectively leads to a gradual and irreversible decline in lung function over time.
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Related Experiment Video

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Generation of a Chronic Obstructive Pulmonary Disease Model in Mice by Repeated Ozone Exposure
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Pulmonary function, oxidative stress and inflammatory markers in severe COPD exacerbation.

Ivana Stanojkovic1, Jelena Kotur-Stevuljevic, Branislava Milenkovic

  • 1Department for Medical Biochemistry, Faculty of Pharmacy, University of Belgrade, Belgrade, Serbia.

Respiratory Medicine
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Oxidative stress and inflammation are key in COPD exacerbations. Patients show persistent oxidant/antioxidant imbalance and inflammation, especially those with ischemic heart disease.

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Area of Science:

  • Pulmonary Medicine
  • Biochemistry

Background:

  • Oxidative stress and inflammation are integral to the pathogenesis of chronic obstructive pulmonary disease (COPD).
  • Understanding these mechanisms is crucial for managing COPD exacerbations.

Purpose of the Study:

  • To investigate pulmonary function, oxidative stress, and inflammatory markers in severe COPD exacerbation.
  • To compare these markers between patients with and without ischemic heart disease (IHD).

Main Methods:

  • Assessed 74 severe COPD patients and 41 healthy controls.
  • Measured pulmonary function, oxidative stress (O2•-, MDA, AOPP, TOS, SOD, TAS, PAB), and inflammatory markers (hsCRP, neutrophils) at admission and discharge.
  • Stratified COPD patients based on the presence of IHD.

Main Results:

  • COPD patients exhibited increased oxidative stress markers (MDA, AOPP, TOS) and decreased antioxidant capacity (SOD, TAS) during exacerbation.
  • Systemic inflammation markers (hsCRP, neutrophils) were elevated at admission.
  • COPD patients with IHD showed lower Paraoxonase 1 (PON1) activity and higher prooxidant-antioxidant balance (PAB) and hsCRP levels.

Conclusions:

  • Significant oxidant/antioxidant imbalance persists in COPD exacerbation patients for at least 24 hours post-admission and until discharge.
  • End-stage COPD is characterized by increased oxidative stress, systemic inflammation, and reduced antioxidant defense.
  • Ischemic heart disease exacerbates oxidative stress and inflammation in COPD patients.