Abstract
Studies of collagen and elastin in pulmonary emphysema have been controversial. The problems involve methodologic differences; often whole lungs have been sampled and the types of emphysema have not been classified. Quantification of collagen and elastin is important since the increase in collagen supports the inflammatory-repair hypothesis of emphysema, which has been recently revived. On the other hand, loss of elastin supports the protease-antiprotease hypothesis. Accordingly, we measured collagen (hydroxyproline) and elastin (desmosine) in 147 small samples of human lungs removed for cancer. The amount and type of collagen were also assessed histochemically in tissue blocks adjacent to the tissue used for the biochemical analysis. We found that collagen in the homogenates was increased only in irregular air-space enlargement, but histochemically, collagen was consistently increased in centriacinar, distal acinar, and irregular air- space enlargement sections. Elastin was decreased in all grades of panacinar air-space enlargement and also in severe centriacinar air-space enlargement. Our data support both the protease-antiprotease imbalance hypothesis in panacinar and the inflammatory-repair hypothesis in centriacinar, distal acinar, and irregular air-space enlargement.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 975-981 |
| Number of pages | 7 |
| Journal | American Review of Respiratory Disease |
| Volume | 147 |
| Issue number | 4 |
| State | Published - 1993 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Pulmonary and Respiratory Medicine
Cite this
Collagen and elastin in human pulmonary emphysema. / Cardoso, W. V.; Sekhon, H. S.; Hyde, D. M.; Thurlbeck, W. M.
In: American Review of Respiratory Disease, Vol. 147, No. 4, 1993, p. 975-981.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Collagen and elastin in human pulmonary emphysema
AU - Cardoso, W. V.
AU - Sekhon, H. S.
AU - Hyde, D. M.
AU - Thurlbeck, W. M.
PY - 1993
Y1 - 1993
N2 - Studies of collagen and elastin in pulmonary emphysema have been controversial. The problems involve methodologic differences; often whole lungs have been sampled and the types of emphysema have not been classified. Quantification of collagen and elastin is important since the increase in collagen supports the inflammatory-repair hypothesis of emphysema, which has been recently revived. On the other hand, loss of elastin supports the protease-antiprotease hypothesis. Accordingly, we measured collagen (hydroxyproline) and elastin (desmosine) in 147 small samples of human lungs removed for cancer. The amount and type of collagen were also assessed histochemically in tissue blocks adjacent to the tissue used for the biochemical analysis. We found that collagen in the homogenates was increased only in irregular air-space enlargement, but histochemically, collagen was consistently increased in centriacinar, distal acinar, and irregular air- space enlargement sections. Elastin was decreased in all grades of panacinar air-space enlargement and also in severe centriacinar air-space enlargement. Our data support both the protease-antiprotease imbalance hypothesis in panacinar and the inflammatory-repair hypothesis in centriacinar, distal acinar, and irregular air-space enlargement.
AB - Studies of collagen and elastin in pulmonary emphysema have been controversial. The problems involve methodologic differences; often whole lungs have been sampled and the types of emphysema have not been classified. Quantification of collagen and elastin is important since the increase in collagen supports the inflammatory-repair hypothesis of emphysema, which has been recently revived. On the other hand, loss of elastin supports the protease-antiprotease hypothesis. Accordingly, we measured collagen (hydroxyproline) and elastin (desmosine) in 147 small samples of human lungs removed for cancer. The amount and type of collagen were also assessed histochemically in tissue blocks adjacent to the tissue used for the biochemical analysis. We found that collagen in the homogenates was increased only in irregular air-space enlargement, but histochemically, collagen was consistently increased in centriacinar, distal acinar, and irregular air- space enlargement sections. Elastin was decreased in all grades of panacinar air-space enlargement and also in severe centriacinar air-space enlargement. Our data support both the protease-antiprotease imbalance hypothesis in panacinar and the inflammatory-repair hypothesis in centriacinar, distal acinar, and irregular air-space enlargement.
UR - http://www.scopus.com/inward/record.url?scp=0027464728&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0027464728&partnerID=8YFLogxK
M3 - Article
C2 - 8466136
AN - SCOPUS:0027464728
VL - 147
SP - 975
EP - 981
JO - American Journal of Respiratory and Critical Care Medicine
JF - American Journal of Respiratory and Critical Care Medicine
SN - 1073-449X
IS - 4
ER -