Are there neurophenotypes for asthma? Functional brain imaging of the interaction between emotion and inflammation in asthma.
Level 3 - non-randomized controlled study
Non-randomized controlled neuroimaging study comparing distinct patient subgroups and healthy controls
PubMed 22870208 · doi:10.1371/journal.pone.0040921
What was done
Functional magnetic resonance imaging (fMRI) was used to assess neural responses to asthma-specific versus general negative emotional cues after allergen challenge across three groups: asthmatics with a dual response (significant inflammation), asthmatics with only an immediate response (minimal inflammation), and healthy controls.
What was found
The abstract reports no numerical data, effect sizes, or p-values. It qualitatively states that anterior insular cortex activation was differentially elevated in response to asthma-relevant cues during the late phase of the dual response, and that this activation predicted changes in airway inflammation.
Why it matters
The study suggests a neural mechanism linking emotional cue reactivity to pulmonary inflammatory cascades, supporting the concept of distinct asthma neurophenotypes.
Limits
Sample sizes, demographic details, and quantitative statistics are not reported in the abstract. The observational and cross-sectional design cannot establish whether neural reactivity drives airway inflammation or is an effect of peripheral inflammatory signaling.
Cited by
- supports The insular cortex is involved in modulating the inflammatory response in the lungs of asthmatics and responds to psychosocial influences.