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Related Concept Videos

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.
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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.
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The inflammatory response is the body's defense against infection, injury, or irritation from bacteria, trauma, toxins, or heat. Inflammation helps locate and destroy pathogens and remove damaged tissue elements to heal the body. During this initial phase, fluid, blood products, and nutrients migrate to the injured area, resulting in redness, heat, swelling, ache, and loss of function. Moreover, signs of systemic inflammation include fever, increased WBC count, malaise, anorexia, nausea,...
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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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Related Experiment Video

Updated: Oct 25, 2025

Murine Model of Allergen Induced Asthma
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Systemic and vascular inflammation in experimental allergic asthma.

A Konior-Rozlachowska1, M Siedlinski1, P Szczepaniak1

  • 1Department of Internal and Agricultural Medicine, Jagiellonian University Medical College, Cracow, Poland.

Journal of Physiology and Pharmacology : an Official Journal of the Polish Physiological Society
|August 10, 2021
PubMed
Summary

Experimental allergic asthma in guinea pigs increased T cells but did not significantly alter aortic inflammatory markers or perivascular immune cells. However, it decreased endothelial nitric oxide synthase (eNOS) mRNA expression in the aorta.

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Area of Science:

  • Immunology
  • Cardiovascular Biology
  • Respiratory Medicine

Background:

  • Allergic asthma and atherosclerosis are inflammatory conditions sharing common cellular pathways.
  • Evidence suggests a potential link between asthma and atherosclerosis.
  • Investigating this link may reveal shared mechanisms and therapeutic targets.

Purpose of the Study:

  • To investigate if experimental allergic asthma induces vascular inflammation and immune cell infiltration in perivascular adipose tissue.
  • To assess changes in aortic inflammatory markers and endothelial function in an asthma model.

Main Methods:

  • Ovalbumin sensitization and allergen inhalation in Dunkin Hartley guinea pigs to induce experimental allergic asthma.
  • Flow cytometry to quantify T cell and macrophage populations.
  • Real-time PCR to measure aortic expression of inflammatory markers, adhesion molecules, and endothelial nitric oxide synthase (eNOS).

Main Results:

  • A significant increase in peripheral blood T cells was observed in the allergic asthma group compared to controls.
  • No significant differences in leukocyte content were found in the perivascular adipose tissue.
  • A significant decrease in aortic endothelial nitric oxide synthase (eNOS) mRNA expression was noted in the allergic group.

Conclusions:

  • Experimental allergic asthma in this model did not lead to detectable aortic inflammation or perivascular adipose tissue immune cell changes.
  • A significant reduction in eNOS mRNA in the aorta suggests a potential impact on vascular endothelial function.
  • Further research is needed to elucidate the specific mechanisms linking allergic asthma and cardiovascular inflammation.