Abstract:
PURPOSE:Elevations of plasmin have been implicated in the pathogenesis of abdominal aortic aneurysms (AAA) because of its ability to digest extracellular matrix proteins. Plasminogen activators regulate the conversion of plasminogen to plasmin. Tissue-type plasminogen activator (tPA) is more important in modulation of fibrinolysis, and urokinase-type plasminogen activator (uPA) is predominant in tissue remodeling. The purpose of this study was to determine the levels of plasminogen activators in diseased aorta because they may be responsible for the increased plasmin levels previously described in AAA. METHODS:Levels of tPA and uPA in AAA, occlusive, and normal (organ donor) aorta were studied in tissue explant supernatants. Supernatant tPA and uPA levels were measured with an enzyme-linked immunosorbent assay. Northern analysis was used to quantitate uPA messenger RNA (mRNA) levels in aortic tissue. RESULTS:Levels of tPA in the supernatants were similar in occlusive (20 +/- 4 ng/ml) and AAA (23 +/- 8) aorta, but threefold higher than in normal aorta (7 +/- 5; p < 0.005 for normal vs occlusive and p < 0.001 for normal vs AAA). In contrast, uPA supernatant levels were differentially expressed, with the highest level existing in AAA (9.7 +/- 2.7 ng/ml), followed by occlusive (4.9 +/- 3.5), and the lowest levels in normal aorta (1.2 +/- 0.7; p < 0.05 for normal vs occlusive, p < 0.001 for normal vs AAA, and p < 0.005 for occlusive vs AAA). Inhibition of protein or RNA synthesis by addition of cyclohexamide or actinomycin D, respectively, revealed no significant difference between treated and control supernatants, suggesting that the increases were caused by protein release rather than active synthesis. Levels of uPA mRNA followed the same trend as the supernatant uPA levels (AAA 1.07 +/- 0.54, occlusive 0.54 +/- 0.08, and normal aorta 0.01 +/- 0.01). CONCLUSIONS:Levels of tPA were similar in aneurysmal and occlusive aorta, but exhibited a threefold increase over normal aorta, suggesting that the elevations of tPA are associated with the arteriosclerosis present in both aneurysmal and occlusive disease. Differences in uPA levels were significant between all three groups, with the highest levels in AAA and the lowest levels in normal specimens. Northern analysis of uPA mRNA followed the same trend, suggesting that the increase in uPA may be regulated at the level of transcription. As uPA plays an important role in tissue remodeling, our findings may also reflect the relative tissue repair activities in these three types of specimens and may explain the previously reported increased levels of plasmin seen in AAA.
journal_name
J Vasc Surgjournal_title
Journal of vascular surgeryauthors
Shireman PK,McCarthy WJ,Pearce WH,Shively VP,Cipollone M,Kwaan HCdoi
10.1016/s0741-5214(97)70333-1subject
Has Abstractpub_date
1997-01-01 00:00:00pages
157-64issue
1eissn
0741-5214issn
1097-6809pii
S0741-5214(97)70333-1journal_volume
25pub_type
杂志文章abstract:PURPOSE:The objective of this study was to assess the usefulness of gadolinum-enhanced magnetic resonance angiography (MRA) for defining anatomic features relevant to performing aortic surgery for aneurysmal disease. METHODS:Anatomic data defined by MRA, including abdominal aortic aneurysm (AAA) size and character, as...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/s0741-5214(95)70197-4
更新日期:1995-04-01 00:00:00
abstract:BACKGROUND:A strategy in minimizing thrombotic events of vascular constructs is to seed the luminal surface with autologous endothelial cells (ECs). The task of seeding ECs can be achieved via bioreactors, which induce mechanical forces (shear stress, strain, pressure) onto the ECs. Although bioreactors can achieve a c...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2009.08.074
更新日期:2010-01-01 00:00:00
abstract:BACKGROUND:Intermittent claudication (IC) is the most common symptom of peripheral arterial disease, which significantly affects walking ability, functional capacity and quality of life. Supervised exercise programs (SEP) are recommended as first-line treatment, but recruitment and adherence rates are poor. The time re...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2019.03.050
更新日期:2019-12-01 00:00:00
abstract:OBJECTIVE:The objective of this study was to assess the prognostic value of hemodynamic parameters measured with duplex ultrasound scan, together with other important graft and patient characteristics, in predicting lower extremity vein graft thrombosis. METHODS:A total of 165 lower extremity vein grafts were entered ...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1067/mva.2001.112214
更新日期:2001-01-01 00:00:00
abstract:OBJECTIVES:P-selectin inhibition has been found to limit venous thrombosis. We hypothesize that elevated levels of P-selectin will amplify thrombosis, mediated by procoagulant microparticles (MPs). METHODS:Male mice (Mus musculus, n659), 20 to 25 grams, underwent IVC ligation to induce thrombosis. Groups consisted of ...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/s0741-5214(03)01033-4
更新日期:2003-11-01 00:00:00
abstract:OBJECTIVE:Foot complications in patients with diabetes or peripheral artery disease (PAD) are serious events in the life of these patients that often lead to amputations and mortality. No evidence synthesis has been reported on the mortality rates after minor lower extremity amputation; thus, a quantitative evidence sy...
journal_title:Journal of vascular surgery
pub_type: 杂志文章,评审
doi:10.1016/j.jvs.2020.07.086
更新日期:2020-12-01 00:00:00
abstract:OBJECTIVE:Supervised exercise training (walking) is recommended in patients with intermittent claudication, both as a means to improve symptoms (walking distance and quality of life [QoL]) and as a means to improve general cardiovascular health (including vascular function and heart rate variability [HRV]). Our aim was...
journal_title:Journal of vascular surgery
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.jvs.2018.10.109
更新日期:2019-07-01 00:00:00
abstract:PURPOSE:Two of three patients with vertebrobasilar stroke harbor a stenosis of the vertebral or basilar arteries. The best treatment for secondary prophylaxis in vertebrobasilar occlusive disease has not been defined. In patients with high-grade stenoses, and especially those refractory to medication, stenting offers t...
journal_title:Journal of vascular surgery
pub_type: 杂志文章,评审
doi:10.1016/j.jvs.2006.02.027
更新日期:2006-06-01 00:00:00
abstract::The optimal management of endoleaks after endovascular repair of abdominal aortic aneurysms remains to be established. In this report, we describe a persistent side-branch, or type II, endoleak 1 year after endograft implantation treated with catheter-directed embolization of the aneurysm sac and the inferior mesenter...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1067/mva.2001.118824
更新日期:2001-12-01 00:00:00
abstract:OBJECTIVE:Studies on the safety of carotid endarterectomy (CEA) under different anesthetic techniques are sometimes contradictory. The aim of this study was to compare real-world outcomes of CEA under general anesthesia (GA) vs regional or local anesthesia (RA/LA). METHODS:A retrospective analysis of the Vascular Qual...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2017.09.028
更新日期:2018-05-01 00:00:00
abstract:BACKGROUND:Peripheral arterial disease is a significant problem worldwide. In developing countries such as India, the increased incidence of smoking and other forms of nicotine intake has resulted in a large proportion of young individuals with Buerger's disease. The results of surgical and endovascular treatment for t...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2008.09.005
更新日期:2008-12-01 00:00:00
abstract:OBJECTIVE:Constrictive extracellular matrix (ECM) remodeling contributes significantly to restenosis after arterial reconstruction, but its molecular regulation is poorly defined. Hyaluronan (HA) accumulates within ECM at sites of injury where it is thought to facilitate smooth muscle cell (SMC) trafficking and collage...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2013.03.047
更新日期:2014-03-01 00:00:00
abstract:BACKGROUND:The optimum management of isolated penetrating aortic ulceration (PAU), with no associated intramural hematoma or aortic dissection is not clear. We evaluate the short- and long-term outcomes in isolated PAU to better inform management strategies. METHODS:We conducted a retrospective review of 43 consecutiv...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2019.09.039
更新日期:2020-07-01 00:00:00
abstract:OBJECTIVE:This study evaluated the correlation of ultrasound (US)-derived aortic aneurysm diameter measurements with centerline, three-dimensional (3-D) reconstruction computed tomography (CT) measurements after endovascular aortic aneurysm repair (EVAR). METHODS:Concurrent CT and US examinations from 82 patients unde...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2010.01.033
更新日期:2010-06-01 00:00:00
abstract::The association between cigarette smoking and the development of atherosclerosis is well established, but the mechanism that makes cigarettes such a potent "risk factor" is not understood. There is normally a constant insudation of plasma macromolecules into the arterial wall. Fibrinogen and lipids are two of the larg...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:
更新日期:1988-01-01 00:00:00
abstract:OBJECTIVES:Postoperative limb compression is widely used after venous surgery to prevent thromboembolism and to reduce hemorrhage, edema, hematoma, and pain. Only limited studies have been published regarding the most adequate postoperative compression therapy after varicose vein surgery. This study evaluated the effec...
journal_title:Journal of vascular surgery
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1016/j.jvs.2010.08.033
更新日期:2011-01-01 00:00:00
abstract::A 15-year-old male complained of easy fatigability, leg weakness, and pain on exertion with episodes of syncope while playing baseball. His past medical history was significant for aortic coarctation associated with a congenital bovine hypoplastic aortic arch. A recent arteriogram revealed innominate and left common c...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2004.09.035
更新日期:2005-03-01 00:00:00
abstract:INTRODUCTION:Although autogenous brachial-basilic upper arm transpositions (BVT) have been extensively utilized, there has been significant disparity in published patency rates. Very little is known about the efficacy of autogenous brachial-cephalic upper arm transpositions (CVT). We evaluated our experience with trans...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2007.02.057
更新日期:2007-07-01 00:00:00
abstract:OBJECTIVE:To define diameter at three levels along the popliteal artery and its relation to the inflow arteries in the normal state and in popliteal aneurysms. METHODS:The external diameter of the arteries was determined by duplex ultrasound scanning at the common femoral (CFA), superficial femoral artery (SFA), proxi...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2005.11.026
更新日期:2006-03-01 00:00:00
abstract:OBJECTIVE:The objective of this study was to acquire insight into the interpretation of intravascular ultrasound images of the abdominal aorta and to assess to what extent this technique can provide useful parameters for the endovascular treatment of patients with abdominal aortic aneurysm. STUDY DESIGN:This was a des...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/s0741-5214(98)70366-0
更新日期:1998-02-01 00:00:00
abstract:OBJECTIVE:Among Basque handball players, the repeated impact of a ball on the palms of their hands hundreds of thousands of times throughout their sporting careers produces Raynaud syndrome. Treating this patient group is complex. Our objective was to assess the efficacy of digital periarterial sympathectomy in this pa...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2015.08.102
更新日期:2016-02-01 00:00:00
abstract::A 53-year-old woman with Loeys-Dietz syndrome developed progressive subclavian artery aneurysm and common carotid artery dissection. She was treated successfully by plugging and coiling of the subclavian aneurysm and its side branches after combined cervical debranching using standard carotid-axillary bypass and Gore ...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2013.09.031
更新日期:2015-03-01 00:00:00
abstract:PURPOSE:Our purpose was to investigate the hemodynamic theory that the blood flow rate through a stenotic arterial graft is limited by the onset of turbulence, which acts as a barrier at peak systole against further increases in systolic flow. METHODS:We used duplex ultrasonography to examine 25 stenotic infrainguinal...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/s0741-5214(96)80003-6
更新日期:1996-03-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to investigate sex-related differences in outcome, defined as amputation rate and survival in patients treated for lower limb ischemia. MATERIAL AND METHOD:Age, sex, and type of procedure for all patients undergoing vascular interventions for lower limb ischemia in Stockholm, Sw...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1067/mva.2002.120043
更新日期:2002-03-01 00:00:00
abstract:OBJECTIVE:Abdominal aortic aneurysm (AAA) progression and disease resistance are related to mural cellularity; adventitial macrophages and neocapillaries predominate in larger, advanced aneurysms, whereas smaller AAAs have fewer macrophages and retain more medial smooth muscle cells (SMCs). Expression analysis of mRNA ...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2005.02.027
更新日期:2005-05-01 00:00:00
abstract::Although pseudoaneurysm of the thyrocervical trunk is seen with increasing frequency as a result of trauma or central venous cannulation, true aneurysm of the thyrocervical trunk is exceedingly rare. A 44-year-old woman presented with acute left neck swelling that progressed rapidly to respiratory distress and subsequ...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2005.08.004
更新日期:2005-12-01 00:00:00
abstract:OBJECTIVE:The primary aim of this study was to assess if self-reported measures of walking limitation correlate better with a community-based assessment of maximum walking distance (MWD) than they do with laboratory-based tests in patients with intermittent claudication. A secondary aim was to examine the effect of pri...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2012.02.073
更新日期:2013-05-01 00:00:00
abstract::Despite the risks associated with renovascular hypertension and the durable benefits of revascularization, the detection of patients with renovascular hypertension and the selection of those who will benefit from interventional therapy remains a challenge. We have previously documented the reliability of captopril ren...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1067/mva.1990.20329
更新日期:1990-06-01 00:00:00
abstract::Thrombolysis for the treatment of occluded bypass grafts is used in selected clinical circumstances. Unfortunately, a minority of these procedures are technical failures because of the inability to access the occluded graft. We describe a technique that greatly increases the chances of technical success. ...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/s0741-5214(99)70328-9
更新日期:1999-04-01 00:00:00
abstract:OBJECTIVE:The optimal role for bare metal stents (BMS) or stent grafts (SG) in femoropopliteal occlusive disease (FPOD) is as of yet undefined. Understanding the clinical consequences of failure can help guide initial treatment decisions. The goal of this study was to define the nature, frequency, and risk factors for ...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2013.05.094
更新日期:2013-12-01 00:00:00