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Absorption of Nasal and Bronchial Fluids: Precision Sampling of the Human Respiratory Mucosa and Laboratory Processing of Samples
Published on: January 21, 2018
Unique mechanistic features of allergic rhinitis
1Johns Hopkins Asthma and Allergy Center, Baltimore, MD, USA.
The Journal of Allergy and Clinical Immunology
|June 16, 2000
Summary
Allergic rhinitis causes nasal hyperresponsiveness and neurogenic inflammation, potentially linked to nerve growth factor. This nasal dysfunction may impact asthma control.
Area of Science:
- Immunology
- Neuroscience
- Otorhinolaryngology
Background:
- Allergic rhinitis symptoms arise from mast cell activation and mediator release.
- Histamine and other mediators stimulate sensory nerves, causing sneezing, itching, and congestion.
- Allergic rhinitis involves hyperresponsiveness to nonallergic stimuli due to inflammation affecting upper airway sensory nerves.
Purpose of the Study:
- To investigate the mechanisms underlying sensorineural hyperresponsiveness and neurogenic inflammation in allergic rhinitis.
- To explore the role of nerve growth factor (NGF) in these processes.
- To understand the link between allergic rhinitis and asthma.
Main Methods:
- Review of existing evidence on allergic rhinitis pathophysiology.
- Analysis of the role of inflammatory mediators and neurotrophins.
- Examination of the connection between nasal inflammation and lower airway conditions.
Main Results:
- Nerve growth factor (NGF) is produced in nasal mucosa and elevated in perennial allergic rhinitis patients.
- NGF levels increase in nasal secretions after allergen exposure.
- Allergic rhinitis can lead to neurogenic inflammation and increased sensory nerve responsiveness.
Conclusions:
- Nerve growth factor (NGF) may play a key role in the sensorineural changes observed in allergic rhinitis.
- Dysfunction of the nose in allergic rhinitis can negatively impact the lower airways, potentially exacerbating asthma.
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