Is smooth muscle growth in primate arteries regulated by endothelial nitric oxide synthase?

Purpose: We investigated whether control of constitutive endothelial cell nitric oxide synthase (cNOS) and nitric oxide (NO) by changes in shear stress might be important for the regulation of smooth muscle cell (SMC) growth and vascular diameter. Methods: Bilateral femoral arteriovenous fistulas we...

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Veröffentlicht in:Journal of vascular surgery 1998-09, Vol.28 (3), p.514-521
Hauptverfasser: Mattsson, Erney J.R., Geary, Randolph L., Kraiss, Larry W., Vergel, Selina, Liao, James K., Corson, Marshall A., Au, Y.P.Tina, Hanson, Stephen R., Clowes, Alexander W.
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container_end_page 521
container_issue 3
container_start_page 514
container_title Journal of vascular surgery
container_volume 28
creator Mattsson, Erney J.R.
Geary, Randolph L.
Kraiss, Larry W.
Vergel, Selina
Liao, James K.
Corson, Marshall A.
Au, Y.P.Tina
Hanson, Stephen R.
Clowes, Alexander W.
description Purpose: We investigated whether control of constitutive endothelial cell nitric oxide synthase (cNOS) and nitric oxide (NO) by changes in shear stress might be important for the regulation of smooth muscle cell (SMC) growth and vascular diameter. Methods: Bilateral femoral arteriovenous fistulas were placed in baboons to increase the blood flow in the external iliac arteries. At 2 months, the fistula was ligated on one side to restore normal flow (flow switch). Results: In response to flow switch and a decrease in shear stress, iliac artery lumenal area decreased and SMC proliferation was induced. A decline in NO production, cNOS messenger RNA (mRNA), and protein were associated with these biological effects. In a subset of animals with iliac arteries under high flow, infusion of Nω-nitro- l-arginine, an inhibitor of cNOS, did not induce proliferation. Conclusion: Shear stress can regulate cNOS, vasoconstriction, and SMC proliferation. A decrease in nitric oxide may be necessary, but is not sufficient to induce SMC proliferation in response to a decrease in blood flow. (J Vasc Surg 1998:28:514-21.)
doi_str_mv 10.1016/S0741-5214(98)70138-7
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subjects Animals
Biological and medical sciences
Blood vessels and receptors
Fundamental and applied biological sciences. Psychology
Iliac Artery - cytology
Male
Muscle, Smooth, Vascular - cytology
Muscle, Smooth, Vascular - physiology
Nitric Oxide - physiology
Nitric Oxide Synthase - genetics
Nitric Oxide Synthase - physiology
Nitric Oxide Synthase Type III
Nitroarginine - pharmacology
Papio
RNA, Messenger - analysis
Stress, Mechanical
Vertebrates: cardiovascular system
title Is smooth muscle growth in primate arteries regulated by endothelial nitric oxide synthase?
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