Pathogenesis of Chronic Obstructive Pulmonary Disease
Pathogenesis of Chronic Obstructive Pulmonary Disease Pathogenesis of Chronic Obstructive Pulmonary Disease As we dive deeper into understanding COPD, it is crucial to acknowledge the expertise and knowledge provided by leading authorities in the field, such as the Acibadem Healthcare Group. With their vast experience and dedication to respiratory health, Acibadem plays a vital role in unraveling the complexities of COPD, paving the way for effective diagnosis, treatment, and management strategies.
Join us as we embark on this informative journey, exploring the molecular pathways, pathological changes, and inflammatory responses that contribute to the development and progression of COPD. We will also examine the importance of early detection, the impact of lifestyle factors, and the available treatment options for managing COPD.
Furthermore, we will shed light on the long-term outlook and prognosis of COPD, addressing the challenges faced by individuals living with this condition and providing valuable insights into enhancing their quality of life. Finally, we will explore the latest advancements in COPD research, offering a glimpse into exciting breakthroughs and future directions that hold promise for the improvement of diagnostic techniques and therapeutic interventions.
Stay tuned for a comprehensive and informative exploration of the pathogenesis of COPD. Let us together foster a better understanding of this widespread respiratory condition and work towards a brighter future for those affected by it.
Understanding COPD: A Comprehensive Overview
Chronic Obstructive Pulmonary Disease (COPD) is a complex respiratory condition characterized by progressive airflow limitation and persistent respiratory symptoms. To gain a comprehensive understanding of COPD, it is crucial to explore its development process, progression mechanism, underlying causes, and the molecular pathways associated with the disease.
Development Process of COPD
The development of COPD is influenced by various factors, including long-term exposure to harmful substances such as tobacco smoke, occupational dust, and air pollution. The inhalation of these irritants triggers an inflammatory response in the lungs, leading to structural changes and narrowing of the airways. Over time, this chronic inflammation and airway remodeling contribute to the development of COPD.
Progression Mechanism of COPD
COPD is a progressive disease, meaning it worsens over time. The primary mechanism driving disease progression is the continued exposure to harmful substances, which perpetuates the inflammatory response in the lungs and causes further damage to the airways and lung tissues. As the disease progresses, individuals experience a decline in lung function, resulting in persistent respiratory symptoms and reduced quality of life.
Causes of COPD
The most common cause of COPD is prolonged exposure to tobacco smoke, either through active smoking or secondhand smoke. However, occupational exposure to dust, chemicals, and fumes can also contribute to the development of COPD. Additionally, genetic factors, such as alpha-1 antitrypsin deficiency, can predispose individuals to the disease.
Molecular Pathways in COPD
At the molecular level, COPD involves intricate pathways that mediate inflammation, oxidative stress, and tissue damage in the respiratory system. These pathways include the nuclear factor kappa B (NF-κB) signaling pathway, the mitogen-activated protein kinase (MAPK) pathway, and the oxidative stress pathway. Inhibition of these pathways has emerged as a potential therapeutic target for managing COPD.
| COPD Development Process | COPD Progression Mechanism | Causes of COPD | Molecular Pathways in COPD |
|---|---|---|---|
| Long-term exposure to harmful substances | Continued exposure to irritants | Tobacco smoke, occupational dust, air pollution | NF-κB signaling pathway, MAPK pathway, oxidative stress pathway |
| Inflammatory response and airway remodeling | Chronic inflammation and lung damage | Genetic factors (alpha-1 antitrypsin deficiency) | Potential therapeutic target for managing COPD |
Unraveling the Etiology Factors of COPD
Chronic Obstructive Pulmonary Disease (COPD) is a complex respiratory condition that involves multiple etiology factors. Understanding these factors is crucial in identifying individuals at risk and developing effective prevention strategies. In this section, we will explore the various etiology factors associated with COPD and delve into the comprehensive discussion on the associated risk factors.
Etiology Factors of COPD
Several factors contribute to the development and progression of COPD, including:
- Tobacco Smoke: Smoking is the leading cause of COPD, with approximately 90% of cases attributed to this risk factor. Exposure to tobacco smoke damages the airways and lung tissues, leading to inflammation and chronic respiratory symptoms.
- Occupational Exposure: Prolonged exposure to toxic substances in certain work environments, such as dust, chemicals, and fumes, can increase the risk of developing COPD. Occupations like mining, construction, and manufacturing are particularly associated with a higher prevalence of the disease.
- Genetic Factors: Genetic predisposition plays a role in COPD susceptibility. Alpha-1 Antitrypsin Deficiency (AATD) is a genetic condition that increases the risk of developing COPD, especially in individuals who smoke or have a history of smoking.
- Aging: The risk of COPD increases with age, as lung function naturally declines over time. Chronic exposure to environmental pollutants and lifestyle factors further exacerbates this risk.
Risk Factors of COPD
In addition to the etiology factors mentioned above, certain risk factors can contribute to the development and progression of COPD. These factors include:
- Exposure to Air Pollution: Chronic exposure to outdoor and indoor air pollution, such as vehicle emissions, industrial pollutants, and biomass smoke, increases the risk of COPD.
- Family History: Individuals with a family history of COPD are at a higher risk of developing the condition, as genetic factors can influence susceptibility.
- Respiratory Infections: Repeated respiratory infections, including pneumonia and bronchitis, can cause inflammation and damage to the airways, contributing to the development of COPD.
- Poor Lung Development: Poor lung growth during childhood and adolescence can lead to reduced lung function and an increased risk of COPD later in life.
- Socioeconomic Factors: Socioeconomic factors, such as low income, limited education, and inadequate access to healthcare, can contribute to a higher prevalence of COPD.
- Unhealthy Lifestyle Habits: Unhealthy lifestyle habits, including a sedentary lifestyle, poor nutrition, and substance abuse, can increase the risk of COPD and worsen its progression.
By gaining insight into these etiology factors and risk factors, healthcare professionals can develop targeted prevention strategies and interventions to reduce the burden of COPD. The table below provides a visual representation of the various factors associated with COPD:
| Etiology Factors | Risk Factors |
|---|---|
| Tobacco Smoke | Exposure to Air Pollution |
| Occupational Exposure | Family History |
| Genetic Factors (AATD) | Respiratory Infections |
| Aging | Poor Lung Development |
| Socioeconomic Factors | |
| Unhealthy Lifestyle Habits |
Pathological Changes in COPD
Chronic Obstructive Pulmonary Disease (COPD) is a progressive lung disorder characterized by persistent respiratory symptoms and airflow limitation. To fully understand this complex condition, it is vital to explore the pathological changes that occur in the lungs of individuals with COPD and the underlying cellular mechanisms driving these changes.
One of the key pathological changes in COPD is the destruction of lung tissue, particularly the gradual loss of elasticity in the airways and alveoli. This leads to decreased lung function and impaired gas exchange, contributing to the characteristic symptoms of COPD such as breathlessness and coughing.
The cellular mechanisms involved in COPD are multifaceted and involve chronic inflammation, oxidant-antioxidant imbalance, protease-antiprotease imbalance, and abnormal repair processes. These mechanisms work in tandem to initiate and perpetuate the pathological changes seen in the lungs of individuals with COPD.
Chronic inflammation plays a pivotal role in COPD, as it leads to increased production of inflammatory molecules, recruitment of neutrophils and macrophages, and activation of immune cells. This sustained inflammation damages the lung tissue over time and further exacerbates the progression of the disease.
Oxidant-antioxidant imbalance is another critical cellular mechanism in COPD. Increased exposure to cigarette smoke, environmental pollutants, and respiratory infections generates an excess of reactive oxygen species (ROS) in the lungs. This imbalance between the production of ROS and the antioxidative defense system results in oxidative stress, causing cellular damage and tissue inflammation.
Protease-antiprotease imbalance is a dysregulation of enzymes responsible for the breakdown and control of proteins in the lungs. In COPD, there is an overactivation of proteases, such as neutrophil elastase, and a deficiency of antiproteases that normally inhibit their activity. This imbalance leads to the destruction of structural proteins in the lung tissue, further contributing to the progression of COPD.
Abnormal repair processes in the lungs of individuals with COPD also contribute to the pathological changes. The repair mechanisms, such as the proliferation and differentiation of epithelial and mesenchymal cells, are impaired, leading to the thickening of airway walls, increased mucus production, and fibrosis.
By understanding the COPD pathological changes and the intricate cellular mechanisms involved, healthcare professionals can develop targeted interventions to slow disease progression and improve patient outcomes. Enhanced knowledge in this area may lead to the development of novel therapeutic approaches that aim to intervene in these mechanisms and halt the debilitating effects of COPD.
The Role of Inflammatory Response in COPD
Chronic Obstructive Pulmonary Disease (COPD) is a progressive lung condition characterized by inflammation and irreversible airflow limitation. Inflammation plays a pivotal role in the pathogenesis of COPD, contributing to disease development, progression, and the severity of symptoms.
When harmful particles, such as cigarette smoke or air pollutants, are inhaled, they trigger an inflammatory response in the lungs. This response involves the activation of immune cells and the release of inflammatory mediators, such as cytokines and chemokines. Over time, chronic exposure to noxious stimuli leads to persistent inflammation, causing damage to the airways and lung tissue.
The inflammatory response in COPD is primarily driven by neutrophils, macrophages, and T lymphocytes. These immune cells release pro-inflammatory molecules that further perpetuate the inflammatory cycle. As a result, the lungs experience a state of chronic inflammation, which, in turn, leads to structural changes, airway remodeling, and the development of emphysema.
Studies have shown that the inflammatory response in COPD is not limited to the lungs but also affects systemic inflammation. Elevated levels of inflammatory markers, such as C-reactive protein (CRP) and interleukin-6 (IL-6), have been observed in patients with COPD. This systemic inflammation contributes to the extrapulmonary manifestations of COPD, including cardiovascular comorbidities.
Understanding the role of inflammatory response is crucial for developing effective treatment strategies for COPD. Targeting the underlying inflammation can help alleviate symptoms, reduce exacerbations, and slow down disease progression. Anti-inflammatory medications, such as corticosteroids and phosphodiesterase-4 inhibitors, are commonly used to manage COPD and mitigate the inflammatory response.
Furthermore, lifestyle modifications, such as smoking cessation, regular exercise, and a healthy diet, can also aid in reducing inflammation and improving COPD outcomes. By addressing the inflammatory component of COPD, healthcare professionals can provide comprehensive care to individuals living with this chronic condition.
Inflammatory Response in COPD – Key Points
- COPD is characterized by chronic inflammation in the lungs.
- Inflammatory mediators, such as cytokines and chemokines, are released during the inflammatory response.
- Neutrophils, macrophages, and T lymphocytes are key immune cells involved in COPD-related inflammation.
- Chronic inflammation in COPD leads to airflow limitation, structural changes, and extrapulmonary manifestations.
- Targeting inflammation is an essential component of COPD management, with medications and lifestyle modifications being key interventions.
Diagnosis and Early Detection of COPD
Early detection and accurate diagnosis of Chronic Obstructive Pulmonary Disease (COPD) are crucial in effectively managing the condition and preventing further progression. Healthcare professionals utilize various diagnostic methods to assess lung function, identify the presence of COPD, and determine the severity of the disease.
1. Pulmonary Function Tests (PFTs)
Pulmonary Function Tests (PFTs) are non-invasive assessments that measure lung capacity and function. These tests can help diagnose COPD, differentiate it from other respiratory conditions, and assess the severity of airflow limitation. Common PFTs include:
- Spirometry: Measures lung function by assessing the amount and speed of air exhaled.
- Lung Volume Measurement: Determines lung capacity and the distribution of air in the lungs.
- Diffusion Capacity Test: Assesses how well oxygen moves from the lungs into the bloodstream.
2. Imaging Techniques
Imaging techniques such as chest X-ray and computed tomography (CT) scans can provide valuable insights into the structural abnormalities in the lungs caused by COPD. These imaging tools help healthcare professionals visualize lung damage, assess the extent of emphysema, and rule out other conditions.
3. Blood Tests
Blood tests can be utilized to evaluate the level of certain biomarkers that indicate inflammation and oxidative stress in the respiratory system. These biomarkers include C-reactive protein (CRP), interleukin-6 (IL-6), and malondialdehyde (MDA). Elevated levels of these markers can indicate the presence of COPD and the severity of the disease.
4. Assessment of Symptoms and Medical History
Obtaining a detailed medical history and assessing symptoms is crucial in the diagnosis of COPD. Healthcare professionals will inquire about symptoms such as chronic cough, sputum production, shortness of breath, and exposure to risk factors such as smoking or occupational hazards. A comprehensive evaluation of symptoms, combined with other diagnostic methods, helps in confirming the presence of COPD.
5. Alpha-1 Antitrypsin Deficiency Testing
In select cases, healthcare professionals may perform alpha-1 antitrypsin deficiency testing to determine if the individual has a genetic predisposition to developing COPD. Alpha-1 antitrypsin deficiency is a hereditary condition that can increase the risk of developing COPD, particularly in individuals who have never smoked.
Early detection of COPD allows healthcare professionals to implement appropriate treatment strategies, initiate lifestyle modifications, and offer support tailored to the individual’s needs. If you experience any symptoms or have a history of risk factors, it is important to consult with a healthcare professional for timely diagnosis and intervention.
Impact of Lifestyle Factors on COPD
In addition to genetic predisposition and environmental factors, lifestyle choices and habits play a significant role in the development and management of Chronic Obstructive Pulmonary Disease (COPD). Adopting preventive strategies and making positive lifestyle changes can significantly reduce the risk of developing COPD and improve the overall well-being of individuals already living with the condition.
Influence of Lifestyle Factors on COPD
Several lifestyle factors can contribute to the progression and severity of COPD. Smoking tobacco is the leading cause of COPD and quitting smoking is crucial for preventing the disease. Exposure to secondhand smoke, occupational hazards such as chemical fumes and dust, and air pollution can also exacerbate symptoms and increase the risk of developing COPD.
Furthermore, physical inactivity and poor nutrition can negatively impact lung function and overall respiratory health. Regular physical activity, such as aerobic exercises and strength training, can help improve lung capacity and reduce the burden of COPD. A well-balanced diet rich in fruits, vegetables, whole grains, and lean proteins provides essential nutrients and antioxidants that support lung function and immune system health.
COPD Prevention Strategies
Preventing COPD begins with adopting healthy lifestyle choices and minimizing exposure to known risk factors. The following strategies can help reduce the risk of developing COPD and improve the quality of life for individuals already living with the condition:
- Avoid smoking: Quit smoking and avoid exposure to secondhand smoke to prevent further lung damage.
- Control environmental exposure: Minimize exposure to occupational hazards and indoor/outdoor air pollution, such as chemicals, dust, and air pollutants.
- Stay physically active: Engage in regular exercise routines that include aerobic activities, strength training, and breathing exercises to improve respiratory health.
- Follow a healthy diet: Consume a balanced diet rich in vitamins, minerals, and antioxidants to support lung function and overall well-being.
- Practice regular respiratory hygiene: Follow good respiratory hygiene practices, such as getting vaccinated against respiratory infections, practicing proper hand hygiene, and avoiding close contact with individuals who have respiratory illnesses.
By implementing these preventive strategies, individuals can decrease their risk of developing COPD and improve their chances of managing the condition effectively. However, it is essential to consult with healthcare professionals for personalized advice and guidance in adopting healthy lifestyle changes that best suit individual needs and circumstances.
| Lifestyle Factor | Impact on COPD Development | Preventive Strategies |
|---|---|---|
| Smoking | Increases the risk of developing COPD and exacerbates symptoms | Quit smoking and avoid exposure to secondhand smoke |
| Environmental Exposure | Chemical fumes, dust, and air pollution can harm the lungs and worsen COPD | Minimize exposure to occupational hazards and air pollutants |
| Physical Inactivity | Weakens respiratory muscles and reduces lung capacity | Engage in regular physical activity, including aerobic exercises and strength training |
| Poor Nutrition | Lack of essential nutrients and antioxidants can impair lung function | Follow a well-balanced diet rich in fruits, vegetables, whole grains, and lean proteins |
Treatment Approaches for COPD
Managing COPD involves a comprehensive treatment plan that aims to improve symptoms, slow disease progression, and enhance overall quality of life. There are several treatment options available to individuals with COPD, including medication, pulmonary rehabilitation, and lifestyle modifications.
COPD Medication
Medication plays a central role in the management of COPD. The main goal of COPD medications is to alleviate symptoms, reduce inflammation, improve lung function, and prevent exacerbations. The choice of medication depends on the severity of the disease and individual needs. Commonly prescribed medications for COPD include:
- Inhaled bronchodilators: These medications, typically delivered through inhalers, help relax the airway muscles and facilitate easier breathing.
- Inhaled corticosteroids: These anti-inflammatory medications can help reduce airway inflammation and prevent exacerbations in certain COPD cases.
- Combination inhalers: These inhalers contain both bronchodilators and corticosteroids, providing dual benefits in one medication.
- Oral medications: In specific cases, oral medications may be prescribed to individuals with severe COPD to help manage symptoms and reduce exacerbations.
Pulmonary Rehabilitation
Pulmonary rehabilitation is a comprehensive program that combines exercise, education, and support to improve lung function, boost physical fitness, and enhance overall well-being for individuals with COPD. This multidisciplinary approach helps individuals learn techniques for better breathing, manage symptoms, and adopt a healthy lifestyle. Pulmonary rehabilitation programs often include:
- Exercise training: Tailored exercise routines that focus on improving endurance, strength, and flexibility of the respiratory muscles.
- Education and counseling: Informative sessions that provide COPD-specific knowledge, self-management strategies, and emotional support.
- Nutritional advice: Guidance on maintaining a balanced diet and managing weight to support optimal respiratory function.
Lifestyle Modifications
Adopting certain lifestyle modifications can help individuals manage COPD and improve their overall well-being. These modifications can include:
- Smoking cessation: Quitting smoking is crucial in preventing further damage to the lungs and slowing disease progression.
- Healthy diet: Following a balanced diet rich in fruits, vegetables, whole grains, and lean proteins can support respiratory health.
- Regular physical activity: Engaging in regular exercise, as tolerated, can improve lung capacity, stamina, and overall fitness.
- Avoiding environmental triggers: Minimizing exposure to irritants such as air pollution, dust, and chemical fumes can help reduce symptoms and exacerbations.
Long-Term Outlook and Prognosis of COPD
Living with Chronic Obstructive Pulmonary Disease (COPD) can present various challenges, but understanding the long-term outlook and prognosis can help individuals navigate their journey and make informed decisions about their health. COPD is a progressive condition that affects the lungs, causing symptoms such as shortness of breath, coughing, and wheezing. While COPD is a chronic and incurable disease, there are ways to manage its impact and improve quality of life.
COPD Prognosis:
The prognosis of COPD is highly variable and depends on factors such as the severity of the disease, the presence of complications, and the individual’s overall health. According to studies, COPD prognosis worsens as the disease progresses, particularly in individuals who continue to smoke or have comorbidities. Early diagnosis, appropriate treatment, and lifestyle modifications can significantly influence the prognosis and slow down the progression of the disease.
Although COPD is a chronic condition, individuals can experience periods of stability or exacerbations where symptoms worsen. It is essential to monitor symptoms closely and seek medical attention if there is a sudden increase in breathlessness, coughing, or production of mucus.
Living with COPD:
Living with COPD requires adapting to the condition and making lifestyle adjustments to manage symptoms effectively. Working closely with healthcare professionals and following a personalized treatment plan is crucial for long-term management. Here are some key strategies for living with COPD:
1. Smoking Cessation:
Smoking is the leading cause of COPD, and quitting smoking is the most effective way to slow the progression of the disease. Seeking help from healthcare professionals, support groups, or utilizing smoking cessation resources is vital in achieving a smoke-free life.
2. Medication Adherence:
Using prescribed medications consistently and as directed by healthcare professionals can help manage symptoms, reduce exacerbations, and improve overall lung function. Inhalers, oral medications, and other treatments are available to alleviate symptoms and improve quality of life.
3. Pulmonary Rehabilitation:
Pulmonary rehabilitation programs, including exercise training, breathing techniques, and education, can enhance physical fitness, reduce symptoms, and improve overall well-being. Working with healthcare professionals in a structured rehabilitation program can significantly improve COPD management.
4. Healthy Lifestyle Choices:
Adopting a healthy lifestyle is crucial for managing COPD. Regular exercise, a balanced diet, and maintaining a healthy weight can help individuals cope with symptoms and improve lung function. Avoiding exposure to pollutants, such as secondhand smoke and outdoor air pollutants, is also essential.
5. Emotional Support:
COPD can impact emotional well-being due to the limitations it imposes on daily activities. Seeking emotional support from loved ones, joining support groups, or seeking professional counseling can help individuals cope with the emotional challenges of living with COPD.
| Long-Term Outlook and Prognosis Tips | Living with COPD Tips |
|---|---|
| – Early diagnosis and appropriate treatment can positively impact prognosis. | – Quit smoking to slow down the progression of the disease. |
| – Regular monitoring of symptoms and seeking prompt medical attention for exacerbations. | – Adhere to prescribed medications to manage symptoms effectively. |
| – Stay updated with healthcare visits and adjustments to the treatment plan. | – Participate in pulmonary rehabilitation programs to improve physical fitness. |
| – Practice healthy lifestyle choices to manage symptoms and improve lung function. | – Seek emotional support from loved ones or professional counseling to cope with the emotional challenges. |
Advances in COPD Research
As the field of COPD research continues to evolve, significant breakthroughs have been made in understanding the pathogenesis of the disease, offering hope for improved diagnostic techniques and breakthrough therapeutic interventions. Cutting-edge studies have shed light on the complex mechanisms underlying COPD, unraveling the intricate web of molecular pathways involved. These exciting discoveries pave the way for future directions in COPD research that hold promise for enhanced patient outcomes.
One notable research breakthrough in COPD is the identification of novel biomarkers that can aid in early detection and personalized treatment. By analyzing specific genetic and molecular markers, researchers have developed innovative diagnostic tools that enable healthcare professionals to identify individuals at high risk for COPD before the onset of symptoms. This early detection allows for timely intervention and improved disease management.
Moreover, recent studies have unraveled new insights into the impact of environmental factors on COPD development and progression. By investigating the complex interplay between genetic susceptibility and external triggers, researchers have identified potential targets for intervention and prevention strategies. This research opens up new avenues for understanding the environmental risk factors associated with COPD and provides opportunities for targeted interventions to mitigate disease progression.
Looking ahead, future directions in COPD research point toward a more personalized approach to diagnosis and treatment. Advances in genomics and precision medicine offer the potential for tailored therapies based on an individual’s unique genetic makeup, enhancing treatment efficacy and patient outcomes. Furthermore, ongoing research aims to develop innovative therapeutic interventions that can reverse or slow down the progression of COPD, ultimately improving the quality of life for millions of individuals affected by this debilitating disease.
FAQ
What is the pathogenesis of Chronic Obstructive Pulmonary Disease (COPD)?
The pathogenesis of COPD involves a complex interplay of factors, including genetic predisposition, exposure to environmental irritants such as cigarette smoke or air pollution, and chronic inflammation. These factors contribute to the progressive damage and obstruction of the airways, leading to breathing difficulties and other symptoms commonly associated with COPD.
How does COPD develop and progress?
COPD typically develops gradually, with persistent exposure to lung irritants playing a key role in its progression. Over time, the airways become inflamed, leading to chronic bronchitis or emphysema. The disease progresses as the airways are further damaged, resulting in reduced lung function and increasing severity of symptoms.
What are the causes of COPD?
The primary causes of COPD are long-term exposure to cigarette smoke and environmental pollutants. Other factors that may contribute to the development of COPD include genetic predisposition, respiratory infections, and occupational exposure to harmful substances such as coal dust or chemicals.
What are the molecular pathways involved in COPD?
COPD is characterized by dysregulation of various molecular pathways, including oxidative stress, inflammation, and tissue remodeling. These pathways interact and amplify each other, leading to the progressive destruction of lung tissue and airflow limitation.
What are the etiology factors and risk factors for COPD?
The etiology factors for COPD include smoking, exposure to environmental pollutants, genetic factors, and respiratory infections. Additionally, risk factors for COPD include a family history of the disease, occupational exposure to harmful substances, and a history of asthma or chronic bronchitis.
What are the pathological changes observed in COPD?
In COPD, there are various pathological changes observed in the lungs, including chronic inflammation, mucus hypersecretion, airway remodeling, and destruction of alveolar walls. These changes contribute to airflow limitation, reduced lung function, and the characteristic symptoms of COPD.
What are the cellular mechanisms involved in COPD?
The cellular mechanisms in COPD involve an excessive inflammatory response, oxidative stress, impaired repair, and apoptosis (cell death) of lung cells. These mechanisms play key roles in the dlungevelopment and progression of COPD.
How does the inflammatory response contribute to COPD?
Chronic inflammation is a central feature of COPD. The continuous inhalation of lung irritants triggers an immune response, leading to the release of pro-inflammatory molecules and the recruitment of immune cells to the lungs. Prolonged inflammation damages the airways, promotes tissue remodeling, and impairs lung function.
