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Grey and white matter abnormalities in chronic obstructive pulmonary disease: a case-control study
Haiyan Zhang1, Xiaochuan Wang, Jianzhong Lin
1Department of Physiology, Medical College of Xiamen University, Xiamen, China.
BMJ Open
|April 27, 2012
Summary
Chronic obstructive pulmonary disease (COPD) is linked to brain damage. This study found reduced grey matter density and white matter integrity in COPD patients, correlating with disease severity and cognitive decline.
Area of Science:
- Neuroimaging
- Pulmonology
- Neurology
Background:
- Chronic obstructive pulmonary disease (COPD) is characterized by irreversible airflow limitation, leading to reduced oxygen supply to the brain.
- Brain structural changes in COPD patients are not fully understood.
Purpose of the Study:
- To investigate brain structural damage in patients with chronic obstructive pulmonary disease (COPD).
Main Methods:
- A retrospective case-control study involving 25 stable COPD patients and 25 healthy controls matched for age, gender, and education.
- Magnetic resonance imaging (MRI) was used for voxel-based morphometry (grey matter density) and tract-based spatial statistics (white matter fractional anisotropy).
- Neuropsychological tests were administered to assess cognitive function.
Main Results:
- COPD patients exhibited decreased grey matter (GM) density in limbic and paralimbic structures, including the cingulate gyri, insula, and thalamus.
- Reduced white matter fractional anisotropy (FA) was observed in COPD patients in areas like the corona radiata and longitudinal fasciculus, associated with increased radial diffusivity.
- COPD patients performed poorly on cognitive tests, and decreased GM density correlated with arterial oxygen levels and disease duration.
Conclusions:
- COPD is associated with regional grey matter loss and impaired white matter microstructural integrity.
- These brain changes are linked to disease severity and may contribute to the pathophysiological and psychological alterations seen in COPD.
- Findings highlight the neurological impact of COPD, suggesting a need for integrated management approaches.
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