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Allergic Reactions

Allergic Reactions

Asthma: Pathogenesis and Management

Asthma: Pathogenesis and Management

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.

Asthma-II: Pathophysiology and Classification

Asthma-II: Pathophysiology and Classification

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:

Allergic Reactions: Anaphylaxis

Allergic Reactions: Anaphylaxis

Anaphylaxis is a severe, life-threatening hypersensitivity reaction mediated by Immunoglobulin E (IgE) antibodies. When IgE binds to allergens, it triggers the release of mediators– histamine, leukotrienes, and prostaglandins from mast cells and basophils. These mediators cause vasodilation, edema, and inflammation, leading to various symptoms.The primary allergens causing anaphylaxis include food items (e.g., peanuts, shellfish), drugs (e.g., penicillin, asparaginase, corticotropin, heparin),...

Asthma I: Introduction

Asthma I: Introduction

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...

Asthma III: Clinical Manifestations

Asthma III: Clinical Manifestations

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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Related Experiment Video

Updated: Jul 23, 2026

Murine Model of Allergen Induced Asthma

Murine Model of Allergen Induced Asthma

Published on: May 14, 2012

Annals of allergy.

K N Leifer, H J Wittig

Annals of Allergy

|August 1, 1975

Summary

This review examines beta-adrenergic bronchodilator aerosols for asthma treatment, comparing their effectiveness, duration, and side effects. Understanding these inhaled medications is crucial for optimal patient care as new options emerge.

Area of Science:

Pharmacology
Respiratory Medicine
Clinical Therapeutics

Background:

Asthma management relies on effective bronchodilators.
Beta-adrenergic aerosols are a key treatment modality.
New agents are becoming available, necessitating updated knowledge.

Purpose of the Study:

To review the global literature on available beta-adrenergic bronchodilator aerosols.
To compare their relative efficacy, duration of action, and toxicity.
To prepare clinicians for the optimal use of these medications in asthma care.

Main Methods:

Systematic review of the world literature.
Comparative analysis of pharmacological data.
Evaluation of clinical trial outcomes.

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Symptom Assessment of Patients with Allergic Rhinitis Using an Allergen Exposure Chamber

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Last Updated: Jul 23, 2026

Murine Model of Allergen Induced Asthma

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Symptom Assessment of Patients with Allergic Rhinitis Using an Allergen Exposure Chamber

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Main Results:

Efficacy, duration, and toxicity profiles vary among different beta-adrenergic aerosols.
Specific agents demonstrate distinct advantages for certain patient populations.
Data highlights the importance of individualized treatment selection.

Conclusions:

Familiarity with the properties of various beta-adrenergic bronchodilator aerosols is essential.
Optimal asthma care requires knowledge of these agents' relative benefits and risks.
Clinicians should be prepared to utilize newly available inhaled bronchodilators effectively.