The kinin system in rhinitis and asthma

Area of Science:

• Immunology
• Respiratory Medicine
• Pharmacology

Background:

• Renewed interest in kinins' role in airway diseases over the past decade.
• Kinins are implicated in the pathogenesis of allergic rhinitis, viral rhinitis, and asthma.
• Administration of kinins to airway mucosa induces symptoms, supporting their role.

Purpose of the Study:

• To investigate the definitive effects of blocking kinin actions on symptomatic responses in airway diseases.
• To elucidate the mechanisms by which kinins exert their actions in inflamed airways.
• To understand how inflammation modifies sensory nerve responses to kinins.

Main Methods:

• Review of existing literature on kinin generation and airway disease symptoms.
• Analysis of studies demonstrating kinin administration effects on airway mucosa.
• Exploration of evidence implicating sensory nerve activation in kinin effects.

Main Results:

• Strong circumstantial evidence supports kinins' role in airway disease pathogenesis.
• Kinins' effects in airways vary based on the presence and type of inflammation.
• Activation of sensory nerves is a key component of kinin effects in inflamed airways.

Conclusions:

• Further studies are essential to confirm the therapeutic potential of kinin blockade.
• Understanding the interplay between inflammation, sensory nerves, and kinins is crucial.
• More research is needed to delineate neuronal activation mechanisms and selectivity to bradykinin.