Therapeutic elastase inhibition by alpha-1-antitrypsin gene transfer limits neointima formation in normal rabbits

Jacob M. Waugh, Jia Li-Hawkins, Eser Yuksel, Pamela N. Cifra, Philippe G. Amabile, Paul R. Hilfiker, Robert S. Geske, Michael D. Kuo, John W. Thomas, Michael D. Dake, Savio L.C. Woo

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

PURPOSE: Alpha-1-antitrypsin (AAT) is the major circulating elastase inhibitor. Deficiency of elastase inhibition leads to emphysema and vascular abnormalities including accelerated neointima. Because recent evidence suggests that tissue AAT levels determine inhibitory function, the authors hypothesize that local tissue-based expression of AAT limits elastase activity sufficiently to guide arterial response to injury. MATERIALS AND METHODS: Rabbit common femoral arteries were injured by mechanical overdilation and treated with buffer, viral control, or an adenovirus expressing AAT (Ad/AAT). After 3 and 28 days, intima-to-media (I/M) ratios were evaluated. Additionally, early changes in elastase inhibition potential (3 d), extracellular elastin and collagen content (3 d), and local macrophage and neutrophil infiltration (7 d) were determined. RESULTS: Ad/AAT significantly decreased neointima formation after mechanical dilation injury after 28 days: buffer controls exhibited mean I/M ratios of 0.76 ± 0.06, whereas viral controls reached 0.77 ± 0.09; in contrast, Ad/AAT reduced I/M ratios to 0.44 ± 0.06. Both early elastin and collagen content were preserved in the Ad/AAT group relative to controls. The Ad/AAT group also reversed the local inflammation that characterized viral controls. CONCLUSIONS: This strategy demonstrates that local increases in elastase inhibition potential promote a neointima-resistant small-caliber artery, which may offer new promise in management of patients undergoing angioplasty.

Original languageEnglish (US)
Pages (from-to)1203-1209
Number of pages7
JournalJournal of Vascular and Interventional Radiology
Volume12
Issue number10
DOIs
StatePublished - Jan 1 2001
Externally publishedYes

Fingerprint

Neointima
alpha 1-Antitrypsin
Pancreatic Elastase
Adenoviridae
Rabbits
Elastin
Genes
Buffers
Collagen
Therapeutics
Neutrophil Infiltration
Emphysema
Wounds and Injuries
Femoral Artery
Angioplasty
Blood Vessels
Dilatation
Arteries
Macrophages
Inflammation

Keywords

  • Angioplasty
  • Elastase inhibitors
  • Gene therapy
  • Restenosis

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Cardiology and Cardiovascular Medicine

Cite this

Waugh, J. M., Li-Hawkins, J., Yuksel, E., Cifra, P. N., Amabile, P. G., Hilfiker, P. R., ... Woo, S. L. C. (2001). Therapeutic elastase inhibition by alpha-1-antitrypsin gene transfer limits neointima formation in normal rabbits. Journal of Vascular and Interventional Radiology, 12(10), 1203-1209. https://doi.org/10.1016/S1051-0443(07)61680-7

Therapeutic elastase inhibition by alpha-1-antitrypsin gene transfer limits neointima formation in normal rabbits. / Waugh, Jacob M.; Li-Hawkins, Jia; Yuksel, Eser; Cifra, Pamela N.; Amabile, Philippe G.; Hilfiker, Paul R.; Geske, Robert S.; Kuo, Michael D.; Thomas, John W.; Dake, Michael D.; Woo, Savio L.C.

In: Journal of Vascular and Interventional Radiology, Vol. 12, No. 10, 01.01.2001, p. 1203-1209.

Research output: Contribution to journalArticle

Waugh, JM, Li-Hawkins, J, Yuksel, E, Cifra, PN, Amabile, PG, Hilfiker, PR, Geske, RS, Kuo, MD, Thomas, JW, Dake, MD & Woo, SLC 2001, 'Therapeutic elastase inhibition by alpha-1-antitrypsin gene transfer limits neointima formation in normal rabbits', Journal of Vascular and Interventional Radiology, vol. 12, no. 10, pp. 1203-1209. https://doi.org/10.1016/S1051-0443(07)61680-7
Waugh, Jacob M. ; Li-Hawkins, Jia ; Yuksel, Eser ; Cifra, Pamela N. ; Amabile, Philippe G. ; Hilfiker, Paul R. ; Geske, Robert S. ; Kuo, Michael D. ; Thomas, John W. ; Dake, Michael D. ; Woo, Savio L.C. / Therapeutic elastase inhibition by alpha-1-antitrypsin gene transfer limits neointima formation in normal rabbits. In: Journal of Vascular and Interventional Radiology. 2001 ; Vol. 12, No. 10. pp. 1203-1209.
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abstract = "PURPOSE: Alpha-1-antitrypsin (AAT) is the major circulating elastase inhibitor. Deficiency of elastase inhibition leads to emphysema and vascular abnormalities including accelerated neointima. Because recent evidence suggests that tissue AAT levels determine inhibitory function, the authors hypothesize that local tissue-based expression of AAT limits elastase activity sufficiently to guide arterial response to injury. MATERIALS AND METHODS: Rabbit common femoral arteries were injured by mechanical overdilation and treated with buffer, viral control, or an adenovirus expressing AAT (Ad/AAT). After 3 and 28 days, intima-to-media (I/M) ratios were evaluated. Additionally, early changes in elastase inhibition potential (3 d), extracellular elastin and collagen content (3 d), and local macrophage and neutrophil infiltration (7 d) were determined. RESULTS: Ad/AAT significantly decreased neointima formation after mechanical dilation injury after 28 days: buffer controls exhibited mean I/M ratios of 0.76 ± 0.06, whereas viral controls reached 0.77 ± 0.09; in contrast, Ad/AAT reduced I/M ratios to 0.44 ± 0.06. Both early elastin and collagen content were preserved in the Ad/AAT group relative to controls. The Ad/AAT group also reversed the local inflammation that characterized viral controls. CONCLUSIONS: This strategy demonstrates that local increases in elastase inhibition potential promote a neointima-resistant small-caliber artery, which may offer new promise in management of patients undergoing angioplasty.",
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AU - Li-Hawkins, Jia

AU - Yuksel, Eser

AU - Cifra, Pamela N.

AU - Amabile, Philippe G.

AU - Hilfiker, Paul R.

AU - Geske, Robert S.

AU - Kuo, Michael D.

AU - Thomas, John W.

AU - Dake, Michael D.

AU - Woo, Savio L.C.

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N2 - PURPOSE: Alpha-1-antitrypsin (AAT) is the major circulating elastase inhibitor. Deficiency of elastase inhibition leads to emphysema and vascular abnormalities including accelerated neointima. Because recent evidence suggests that tissue AAT levels determine inhibitory function, the authors hypothesize that local tissue-based expression of AAT limits elastase activity sufficiently to guide arterial response to injury. MATERIALS AND METHODS: Rabbit common femoral arteries were injured by mechanical overdilation and treated with buffer, viral control, or an adenovirus expressing AAT (Ad/AAT). After 3 and 28 days, intima-to-media (I/M) ratios were evaluated. Additionally, early changes in elastase inhibition potential (3 d), extracellular elastin and collagen content (3 d), and local macrophage and neutrophil infiltration (7 d) were determined. RESULTS: Ad/AAT significantly decreased neointima formation after mechanical dilation injury after 28 days: buffer controls exhibited mean I/M ratios of 0.76 ± 0.06, whereas viral controls reached 0.77 ± 0.09; in contrast, Ad/AAT reduced I/M ratios to 0.44 ± 0.06. Both early elastin and collagen content were preserved in the Ad/AAT group relative to controls. The Ad/AAT group also reversed the local inflammation that characterized viral controls. CONCLUSIONS: This strategy demonstrates that local increases in elastase inhibition potential promote a neointima-resistant small-caliber artery, which may offer new promise in management of patients undergoing angioplasty.

AB - PURPOSE: Alpha-1-antitrypsin (AAT) is the major circulating elastase inhibitor. Deficiency of elastase inhibition leads to emphysema and vascular abnormalities including accelerated neointima. Because recent evidence suggests that tissue AAT levels determine inhibitory function, the authors hypothesize that local tissue-based expression of AAT limits elastase activity sufficiently to guide arterial response to injury. MATERIALS AND METHODS: Rabbit common femoral arteries were injured by mechanical overdilation and treated with buffer, viral control, or an adenovirus expressing AAT (Ad/AAT). After 3 and 28 days, intima-to-media (I/M) ratios were evaluated. Additionally, early changes in elastase inhibition potential (3 d), extracellular elastin and collagen content (3 d), and local macrophage and neutrophil infiltration (7 d) were determined. RESULTS: Ad/AAT significantly decreased neointima formation after mechanical dilation injury after 28 days: buffer controls exhibited mean I/M ratios of 0.76 ± 0.06, whereas viral controls reached 0.77 ± 0.09; in contrast, Ad/AAT reduced I/M ratios to 0.44 ± 0.06. Both early elastin and collagen content were preserved in the Ad/AAT group relative to controls. The Ad/AAT group also reversed the local inflammation that characterized viral controls. CONCLUSIONS: This strategy demonstrates that local increases in elastase inhibition potential promote a neointima-resistant small-caliber artery, which may offer new promise in management of patients undergoing angioplasty.

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