Vasa Vasorum
Mostrando 25-32 de 32 artigos, teses e dissertações.
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25. Nonreversed and in situ vein grafts. Clinical and experimental observations.
The in situ saphenous vein (ISSV) graft has shown promise in distal bypass. Although improved patency has been attributed to preservation of vasa vasorum, there is no direct evidence to support this hypothesis. Femorodistal bypass was done in 33 patients using ISSV grafts (21) or nonreversed saphenous vein (NRSV) grafts (12) during an 18-month period. The NR
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26. Inhibition of plaque neovascularization reduces macrophage accumulation and progression of advanced atherosclerosis
Plaque angiogenesis promotes the growth of atheromas, but the functions of plaque capillaries are not fully determined. Neovascularization may act as a conduit for the entry of leukocytes into sites of chronic inflammation. We observe vasa vasorum density correlates highly with the extent of inflammatory cells, not the size of atheromas in apolipoprotein E-d
The National Academy of Sciences.
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27. Basic fibroblast growth factor enhances the coupling of intimal hyperplasia and proliferation of vasa vasorum in injured rat arteries.
Basic fibroblast growth factor (bFGF) is mitogenic for smooth muscle cells (SMC) and angiogenic. We examined the in vivo effects of bFGF in balloon denuded carotid arteries of laboratory rats. bFGF was administered continuously from polymer-based devices at 34 ng/d into the periadventitial space of rat carotid arteries for 2 wk. Intimal hyperplasia was not o
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28. Pulmonary and systemic aneurysms in a case of widespread arteritis.
A patient in whom asthma preceded the development of multiple pulmonary and systemic artery aneurisms died after dissection of the aorta. At necropsy he was found to have widespread arteritis of unknown aetiology affecting many large and medium-sized pulmonary and systemic vessels as well as a few microscopic ones. Endarteritis obliterans was present in some
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29. A study of the ultrastructure of developing human umbilical vessels.
Electron microscopic techniques were used to examine the ultrastructure of developing human umbilical arteries and vein (8-12, 13-17 and 37-40 wk gestational age). These showed that with increasing age there is (1) an increase in the size of the lumen and the thickness of the media; (2) an increase in the ratio of contractile smooth muscle phenotypic cells;
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30. Why are the intramyocardial portions of the coronary arteries spared from arteriosclerosis? Clinical implications
Experienced cardiac surgeons are aware that the intramyocardial portions of the coronary arteries are rarely affected by arteriosclerosis. This is a striking and reliable finding in the operating room that is present even when the preceding and subsequent segments of the arteries are diseased. The present review describes the published evidence of embryologi
Pulsus Group Inc.
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31. Pedicled or Skeletonized?: A Review of the Internal Thoracic Artery Graft
The internal thoracic artery is the gold-standard conduit for coronary artery bypass surgery. Until recently, it was used almost exclusively as a pedicle, with construction of 1 distal anastomosis. Skeletonization of the internal thoracic artery has recently been advocated in order to increase the number of arterial anastomoses and decrease the occurrence of
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32. Vein to artery grafts. An experimental study of reinnervation of the graft wall.
Iliolumbar vein to iliac artery grafts were placed in 21 rats by microsurgical techniques. Graft innervation was examined at five time intervals between 1 and 32 weeks after surgery. Nerve fibers were demonstrated microscopically by formaldehyde-induced fluorescence of catecholamines. The morphology and degree of graft innervation were assessed, semiquantita