Structural brain changes related to disease duration in patients with asthma.
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Structural brain changes related to disease duration in patients with asthma. / Von Leupoldt, Andreas; Brassen, Stefanie; Baumann, Hans Jörg; Klose, Hans; Büchel, Christian.
In: PLOS ONE, Vol. 6, No. 8, 8, 2011, p. 23739.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Structural brain changes related to disease duration in patients with asthma.
AU - Von Leupoldt, Andreas
AU - Brassen, Stefanie
AU - Baumann, Hans Jörg
AU - Klose, Hans
AU - Büchel, Christian
PY - 2011
Y1 - 2011
N2 - Dyspnea is the impairing, cardinal symptom patients with asthma repeatedly experience over the course of the disease. However, its accurate perception is also crucial for timely initiation of treatment. Reduced perception of dyspnea is associated with negative treatment outcome, but the underlying brain mechanisms of perceived dyspnea in patients with asthma remain poorly understood. We examined whether increasing disease duration in fourteen patients with mild-to-moderate asthma is related to structural brain changes in the insular cortex and brainstem periaqueductal grey (PAG). In addition, the association between structural brain changes and perceived dyspnea were studied. By using magnetic resonance imaging in combination with voxel-based morphometry, gray matter volumes of the insular cortex and the PAG were analysed and correlated with asthma duration and perceived affective unpleasantness of resistive load induced dyspnea. Whereas no associations were observed for the insular cortex, longer duration of asthma was associated with increased gray matter volume in the PAG. Moreover, increased PAG gray matter volume was related to reduced ratings of dyspnea unpleasantness. Our results demonstrate that increasing disease duration is associated with increased gray matter volume in the brainstem PAG in patients with mild-to-moderate asthma. This structural brain change might contribute to the reduced perception of dyspnea in some patients with asthma and negatively impact the treatment outcome.
AB - Dyspnea is the impairing, cardinal symptom patients with asthma repeatedly experience over the course of the disease. However, its accurate perception is also crucial for timely initiation of treatment. Reduced perception of dyspnea is associated with negative treatment outcome, but the underlying brain mechanisms of perceived dyspnea in patients with asthma remain poorly understood. We examined whether increasing disease duration in fourteen patients with mild-to-moderate asthma is related to structural brain changes in the insular cortex and brainstem periaqueductal grey (PAG). In addition, the association between structural brain changes and perceived dyspnea were studied. By using magnetic resonance imaging in combination with voxel-based morphometry, gray matter volumes of the insular cortex and the PAG were analysed and correlated with asthma duration and perceived affective unpleasantness of resistive load induced dyspnea. Whereas no associations were observed for the insular cortex, longer duration of asthma was associated with increased gray matter volume in the PAG. Moreover, increased PAG gray matter volume was related to reduced ratings of dyspnea unpleasantness. Our results demonstrate that increasing disease duration is associated with increased gray matter volume in the brainstem PAG in patients with mild-to-moderate asthma. This structural brain change might contribute to the reduced perception of dyspnea in some patients with asthma and negatively impact the treatment outcome.
KW - Adult
KW - Humans
KW - Male
KW - Female
KW - Young Adult
KW - Time Factors
KW - Disease Progression
KW - Case-Control Studies
KW - Brain/pathology
KW - Asthma/complications/pathology
KW - Brain Diseases/etiology
KW - Cerebral Cortex
KW - Dyspnea/etiology
KW - Magnetic Resonance Imaging/methods
KW - Neuroimaging
KW - Periaqueductal Gray
KW - Adult
KW - Humans
KW - Male
KW - Female
KW - Young Adult
KW - Time Factors
KW - Disease Progression
KW - Case-Control Studies
KW - Brain/pathology
KW - Asthma/complications/pathology
KW - Brain Diseases/etiology
KW - Cerebral Cortex
KW - Dyspnea/etiology
KW - Magnetic Resonance Imaging/methods
KW - Neuroimaging
KW - Periaqueductal Gray
U2 - 10.1371/journal.pone.0023739
DO - 10.1371/journal.pone.0023739
M3 - SCORING: Journal article
VL - 6
SP - 23739
JO - PLOS ONE
JF - PLOS ONE
SN - 1932-6203
IS - 8
M1 - 8
ER -