What question did this study set out to answer?

To evaluate the antielastase defense screen in the human lower respiratory tract and assess the protease-antiprotease balance in normal individuals and those with alpha 1-antitrypsin deficiency.

October 1, 1981Journal of Clinical InvestigationOpen Access

Antielastases of the human alveolar structures. Implications for the protease-antiprotease theory of emphysema.

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Authors

JGJames E. GadekNational Institutes of Health GFG A FellsNational Institutes of Health RZR L ZimmermanMagee-Womens Hospital

Discussion

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Implication

Comparative analysis demonstrates severe lower respiratory antielastase deficits in PiZ alpha 1-antitrypsin deficiency, confirming chronic vulnerability to neutrophil elastase destruction.

Key Points

To evaluate the antielastase defense screen in the human lower respiratory tract and assess the protease-antiprotease balance in normal individuals and those with alpha 1-antitrypsin deficiency.
Obtained lower respiratory tract samples via bronchoalveolar lavage from non-smoking healthy controls and individuals homozygous for PiZ alpha 1-antitrypsin deficiency.
Evaluated the functional contributions of alpha 1-antitrypsin, alpha 2-macroglobulin, and bronchial mucous inhibitor in protecting alveolar structures against neutrophil elastase.
Alpha 1-antitrypsin is the primary antielastase protecting normal human alveolar structures, whereas alpha 2-macroglobulin and bronchial mucous inhibitor do not provide lower respiratory protection.
Individuals with PiZ homozygous deficiency exhibit little to no alpha 1-antitrypsin and no compensatory alternative antiproteases in their lower respiratory tract, reflecting a chronic vulnerability to neutrophil elastase.

Cite This Study

Gadek et al. (1981) studied this question.

synapsesocial.com/papers/6a6f77fff44fa9f079dcea6e https://doi.org/10.1172/jci110344

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October 1, 1981Journal of Clinical InvestigationOpen Access

Antielastases of the human alveolar structures. Implications for the protease-antiprotease theory of emphysema.

View Full Paper

Ask AI

Bookmark

Authors

JGJames E. GadekNational Institutes of Health GFG A FellsNational Institutes of Health RZR L ZimmermanMagee-Womens Hospital

Discussion

Member takes

Implication

Comparative analysis demonstrates severe lower respiratory antielastase deficits in PiZ alpha 1-antitrypsin deficiency, confirming chronic vulnerability to neutrophil elastase destruction.

Key Points

To evaluate the antielastase defense screen in the human lower respiratory tract and assess the protease-antiprotease balance in normal individuals and those with alpha 1-antitrypsin deficiency.
Obtained lower respiratory tract samples via bronchoalveolar lavage from non-smoking healthy controls and individuals homozygous for PiZ alpha 1-antitrypsin deficiency.
Evaluated the functional contributions of alpha 1-antitrypsin, alpha 2-macroglobulin, and bronchial mucous inhibitor in protecting alveolar structures against neutrophil elastase.
Alpha 1-antitrypsin is the primary antielastase protecting normal human alveolar structures, whereas alpha 2-macroglobulin and bronchial mucous inhibitor do not provide lower respiratory protection.
Individuals with PiZ homozygous deficiency exhibit little to no alpha 1-antitrypsin and no compensatory alternative antiproteases in their lower respiratory tract, reflecting a chronic vulnerability to neutrophil elastase.

Cite This Study

Gadek et al. (1981) studied this question.

synapsesocial.com/papers/6a6f77fff44fa9f079dcea6e https://doi.org/10.1172/jci110344

Also Consider

Synapse has enriched 2 closely related papers on similar clinical questions. Consider them for comparative context:

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