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Bronchial mucosal mast cells in asymptomatic smokers relation to structure, lung function and emphysema
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- Ekberg-Jansson, Ann, 1960 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för invärtesmedicin, Avdelningen för internmedicin,Institute of Internal Medicine, Dept of Medicine
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- Amin, Kawa (author)
- Uppsala universitet,Institutionen för medicinska vetenskaper,Inflammation
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- Bake, Björn, 1939 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för invärtesmedicin, Avdelningen för lungmedicin och allergologi,Institute of Internal Medicine, Dept of Respiratory Medicine/Allergology
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- (creator_code:org_t)
- Elsevier BV, 2005
- 2005
- English.
- In: Respir Med. - : Elsevier BV. - 0954-6111 .- 1532-3064. ; 99:1, s. 75-83
- Journal article (peer-reviewed)
Abstract
Subject headings
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- The pathologic mechanisms of chronic obstructive pulmonary disease (COPD) most certainly involves neutrophil granulocytes, cytotoxic T-cells, macophages and mast cells. The aim of this study was to investigate the relation between the number of mast cells in different compartments in bronchial biopsies of central proximal airways to structural changes, lung function tests and emphysema detected by high resolution computed tomography (HRCT). Twenty nine asymptomatic smoking and 16 never-smoking men from a population study were recruited. Central bronchial biopsies were stained to identify mast cells by immunohistochemistry. The number of mast cells in the epithelium, lamina propria and smooth muscle as well as epithelial integrity and thickness of the tenascin and laminin layer were determined. Smokers had increased numbers of mast cells in all compartments (P<0.001). Structural changes were correlated to mast cell numbers with the closest associations to mast cell numbers in the smooth muscle [epithelial integrity (R(S)=-0.48, P=0.008), laminin layer (R(S)=0.63, P=0.0002), tenascin layer (R(S)=0.40, P=0.03)]. Similar correlations between mast cells and lung function tests were seen [functional residual capacity (FRC) (R(S)=0.60, P=0.0006), total lung capacity (TLC) (R(S)=0.44, P=0.02) and residual volume (RV) (R(S)=0.41, P=0.03)]. No correlations could be detected between mast cells and FEV1 or to emphysema. Smoking is associated with an increase of mast cells in all compartments of the bronchial mucosa, including smooth muscle, and this is related to altered airway structure and function.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Kardiologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Cardiac and Cardiovascular Systems (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Lungmedicin och allergi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Respiratory Medicine and Allergy (hsv//eng)
Keyword
- Aged
- Biopsy
- Bronchi/*pathology
- Cell Count
- Humans
- Male
- Mast Cells/*pathology
- Muscle
- Smooth/pathology
- Pulmonary Emphysema/etiology/*pathology/physiopathology/radiography
- Respiratory Mechanics
- Respiratory Mucosa/pathology
- Smoking/adverse effects/*pathology/physiopathology
- Tomography
- X-Ray Computed
- high-resolution computed
- lung function
- chronic bronchitis
- mast cells
- tomography
- respiratory symptoms
- Aged
- MEDICINE
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- ref (subject category)
- art (subject category)
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- University of Gothenburg
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