Abstract:
BACKGROUND:An arteriovenous loop (AVL) enclosed in a polycarbonate chamber in vivo, produces a fibrin exudate which acts as a provisional matrix for the development of a tissue engineered microcirculatory network. OBJECTIVES:By administering enoxaparin sodium - an inhibitor of fibrin polymerization, the significance of fibrin scaffold formation on AVL construct size (including the AVL, fibrin scaffold, and new tissue growth into the fibrin), growth, and vascularization were assessed and compared to controls. METHODS:In Sprague Dawley rats, an AVL was created on femoral vessels and inserted into a polycarbonate chamber in the groin in 3 control groups (Series I) and 3 experimental groups (Series II). Two hours before surgery and 6 hours post-surgery, saline (Series I) or enoxaparin sodium (0.6 mg/kg, Series II) was administered intra-peritoneally. Thereafter, the rats were injected daily with saline (Series I) or enoxaparin sodium (1.5 mg/kg, Series II) until construct retrieval at 3, 10, or 21 days. The retrieved constructs underwent weight and volume measurements, and morphologic/morphometric analysis of new tissue components. RESULTS:Enoxaparin sodium treatment resulted in the development of smaller AVL constructs at 3, 10, and 21 days. Construct weight and volume were significantly reduced at 10 days (control weight 0.337 +/- 0.016 g [Mean +/- SEM] vs treated 0.228 +/- 0.048, [P < .001]: control volume 0.317 +/- 0.015 mL vs treated 0.184 +/- 0.039 mL [P < .01]) and 21 days (control weight 0.306 +/- 0.053 g vs treated 0.198 +/- 0.043 g [P < .01]: control volume 0.285 +/- 0.047 mL vs treated 0.148 +/- 0.041 mL, [P < .01]). Angiogenesis was delayed in the enoxaparin sodium-treated constructs with the absolute vascular volume significantly decreased at 10 days (control vascular volume 0.029 +/- 0.03 mL vs treated 0.012 +/- 0.002 mL [P < .05]). CONCLUSION:In this in vivo tissue engineering model, endogenous, extra-vascularly deposited fibrin volume determines construct size and vascular growth in the first 3 weeks and is, therefore, critical to full construct development.
journal_name
J Vasc Surgjournal_title
Journal of vascular surgeryauthors
Lokmic Z,Thomas JL,Morrison WA,Thompson EW,Mitchell GMdoi
10.1016/j.jvs.2008.05.021subject
Has Abstractpub_date
2008-10-01 00:00:00pages
974-85issue
4eissn
0741-5214issn
1097-6809pii
S0741-5214(08)00778-7journal_volume
48pub_type
杂志文章abstract:PURPOSE:Varicose veins are a frequent burden, also in the small saphenous system. Yet its basic anatomy is not described consistently. We therefore investigated the fascial and neural relationships of the small saphenous vein (SSV) as well as the frequency and position of valves and the different junctional patterns, a...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2009.08.094
更新日期:2010-04-01 00:00:00
abstract::Hybrid repair of ruptured aortic arch repair has been proposed as a valuable approach. However, the presence of an anterior mediastinal hematoma must be carefully detected because of the inherent risk of rupture at sternotomy. We report the case of a patient presenting a ruptured aortic arch aneurysm with anterior rup...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2011.03.271
更新日期:2011-10-01 00:00:00
abstract::The patient with bilateral internal carotid artery occlusion is at high risk for development of stroke. Medical management and extracranial-intracranial bypass do not appear to offer these patients any protection from symptoms of cerebrovascular insufficiency. Our initial treatment in 11 of 12 patients who had this pa...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1067/mva.1987.avs0050715
更新日期:1987-05-01 00:00:00
abstract:PURPOSE:The geometry of carotid endarterectomy (CEA) reconstruction is a major determinant of carotid bifurcation hemodynamics that, in turn, may play a significant role in the likelihood of early postoperative thrombosis and early and late restenosis. The purpose of this study was to measure the geometry of various ty...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/s0741-5214(97)70259-3
更新日期:1997-03-01 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:OBJECTIVE:Hostile infrarenal neck characteristics are associated with complications such as type Ia endoleak after endovascular aneurysm repair. Aortic neck angulation has been identified as one such characteristic, but its association with complications has not been uniform between studies. Neck angulation assumes tri...
journal_title:Journal of vascular surgery
pub_type: 杂志文章,多中心研究
doi:10.1016/j.jvs.2015.08.110
更新日期:2016-03-01 00:00:00
abstract:OBJECTIVE:The objective of this study was to compare 30-day postoperative mortality for patients undergoing endovascular repair of ruptured abdominal aortic aneurysm (rAAA) using locoregional vs general anesthesia. Unlike the open approach, endovascular repair of rAAA can be performed using either locoregional or gener...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2019.01.077
更新日期:2019-12-01 00:00:00
abstract:PURPOSE:The Asymptomatic Carotid Atherosclerosis Study (ACAS) showed that carotid endarterectomy reduces stroke risk in symptom-free patients with 60% or greater internal carotid artery (ICA) stenosis. This will surely lead to the performance of an increased number of screening duplex examinations. Assuming that positi...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/s0741-5214(95)70228-8
更新日期:1995-06-01 00:00:00
abstract::The hypothesis of the present study is that axillofemoral bypass grafting for acute vascular occlusion has results significantly inferior to an elective procedure. We reviewed 53 patients undergoing primary axillofemoral bypass grafting at the University of Virginia from 1984 to 1989. We found that patients who were a...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1067/mva.1991.29422
更新日期:1991-08-01 00:00:00
abstract:PURPOSE:Epidemiologic studies of vascular injuries are usually limited to those caused by trauma. The purpose of this study was to review the management and clinical outcome in patients with operative injuries to abdominal and pelvic veins. METHODS:Clinical data and outcome in all patients with iatrogenic venous injur...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2003.11.040
更新日期:2004-05-01 00:00:00
abstract::Occasionally symptomatic kinking of the internal carotid artery will require correction. More frequently one must rectify a kink that occurs after bifurcation endarterectomy when associated with a redundant internal carotid artery. Most procedures described for shortening of the carotid artery are somewhat cumbersome ...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1067/mva.1987.avs0060197
更新日期:1987-08-01 00:00:00
abstract:OBJECTIVE:The Zenith pivot branch (p-branch) fenestrated endovascular graft (Cook Medical, Bloomington, Ind) is a new "off-the-shelf" device to treat patients with juxtarenal aortic aneurysms (JRAs). Two options are currently available, which appear to suit >70% of white patients. This study investigates the anatomic a...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2014.12.061
更新日期:2015-06-01 00:00:00
abstract:OBJECTIVE:The aim of the study was to provide, by means of computational fluid dynamics, a comparative analysis after carotid endarterectomy (CEA) between patch graft (PG) and primary closure (PC) techniques performed in real carotid geometries to identify disturbed flow conditions potentially involved in the developme...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2017.08.094
更新日期:2018-03-01 00:00:00
abstract:OBJECTIVE:This study reviews the results of en bloc resection of the inferior vena cava (IVC) for malignant tumor excision and reconstruction. METHODS:A prospective database was reviewed. IVC resection was categorized as suprarenal, perirenal, infrarenal, or extensive (>one segment resected). Repairs were divided into...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2011.11.054
更新日期:2012-05-01 00:00:00
abstract:INTRODUCTION:The long-term prognosis of arteriovenous polytetrafluoroethylene (PTFE) hemodialysis grafts remains poor, causing significant morbidity and costs. The high failure rate is due to a stenosis development of the graft-vein anastomosis, consisting of two pathophysiologically separate and characteristic lesions...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2010.03.019
更新日期:2010-08-01 00:00:00
abstract:OBJECTIVE:The aim of the study was to present the results for patients with atherosclerotic aneurysm of the descending thoracic aorta (DTA) treated with a novel thoracic stent graft. METHODS:A single-center retrospective review of prospectively collected data was performed. We extracted demographic variables as well a...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2018.07.065
更新日期:2019-04-01 00:00:00
abstract:OBJECTIVE:The external carotid artery (ECA) serves as a major collateral pathway for ophthalmic and cerebral artery blood supply. It is routinely examined as part of carotid duplex ultrasound, but criteria for determining ECA stenosis are poorly characterized and typically extrapolated from internal carotid artery data...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2019.10.099
更新日期:2020-09-01 00:00:00
abstract::Late presentation of aortic injuries secondary to internal fixation hardware is uncommon and generally associated with pseudoaneurysm formation. We herein present a case of transmural migration of a pedicle screw into the descending thoracic aorta, which was revealed incidentally by computed tomography scan after almo...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2011.12.084
更新日期:2012-07-01 00:00:00
abstract:BACKGROUND:Lower extremity arterial revascularization (LEAR) is the gold-standard for critical lower limb ischemia (CLI). The goal of this study was twofold. First, we evaluated the long-term functional status of patients undergoing primary LEAR for CLI. Second, prognostic factors of long-term functional status and sur...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2009.08.051
更新日期:2010-02-01 00:00:00
abstract::We have performed a prospective, randomized, multicenter study to compare in situ and reversed vein grafts for long limb salvage bypasses from the proximal thigh to an infrapopliteal artery. Three hundred eighty-four patients required an infrapopliteal bypass for critical lower extremity ischemia. Of these, 259 were e...
journal_title:Journal of vascular surgery
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:
更新日期:1991-02-01 00:00:00
abstract:OBJECTIVE:Smoking not only increases the risk that coronary heart disease will develop but also morbidity and mortality in patients with known coronary atherosclerosis and after coronary artery bypass grafting. Excessive generation of reactive oxygen species (ROS) has been implicated as the final common pathway for the...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2009.09.040
更新日期:2010-02-01 00:00:00
abstract::This study was performed to evaluate the results of peripheral vascular reconstruction for arterial occlusive disease in patients with juvenile-onset diabetes mellitus. The results of 67 bypass procedures performed on 60 patients with juvenile-onset diabetes mellitus between Jan. 1, 1984 and Dec. 31, 1989, were review...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:
更新日期:1992-02-01 00:00:00
abstract:PURPOSE:The objective of this report is to emphasize the importance of saphenopopliteal junction (SPJ) reflux in the genesis of lateral leg ulcers and to suggest a proper diagnostic and therapeutic approach. METHODS:Twenty legs with isolated lateral perimalleolar ulcers from the basis for this report. None had medial ...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/s0741-5214(97)70291-x
更新日期:1997-04-01 00:00:00
abstract:OBJECTIVE:This study was conducted to investigate the influence of coronary artery bypass grafting (CABG), carotid patching, and other factors on the outcome of all carotid endarterectomies (CEAs) performed by a single surgeon at a tertiary referral center. METHODS:The series includes 2262 CEAs (335 bilateral) in 1521...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2005.12.060
更新日期:2006-05-01 00:00:00
abstract:BACKGROUND:Acute thoracic aortic injury resulting from blunt trauma is a life-threatening condition. Endovascular therapy is a less invasive treatment modality that may potentially improve patient outcomes. We reviewed our experience with patients who sustained blunt thoracic aortic injuries distal to the left subclavi...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2007.07.029
更新日期:2007-11-01 00:00:00
abstract::We report a case of extra-adrenal pheochromocytoma within the organ of Zuckerkandl that presented initially with a left iliofemoral deep venous thrombosis (DVT). At the time of presentation, the DVT was thought to be idiopathic as no underlying cause was detected. Subsequently, because of a series of medical events, t...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2005.05.013
更新日期:2005-09-01 00:00:00
abstract:BACKGROUND:Prostaglandin (PG) E(2) (PGE(2)) appears to have a role in stimulating production of interleukin-6 (IL-6) and apoptosis of smooth muscle cells in diseased aortic tissue. These actions are mediated by cellular receptors for PGE(2) EP receptors. OBJECTIVE:This study was undertaken to identify EP receptors ass...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/s0741-5214(03)00339-2
更新日期:2003-08-01 00:00:00
abstract::In this article we describe a method for assembling an endovascular graft within the aorta with a graft and then a stent introduced sequentially over a guidewire as separate components. In the ex vivo study, an endovascular graft that was 25 mm in diameter was introduced through a 9F introducer. In the in vivo study, ...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1067/mva.2001.115814
更新日期:2001-08-01 00:00:00
abstract:BACKGROUND:Groin wound infections represent a substantial source of patients' morbidity and resource utilization. Definitions and reporting times of groin infections are poorly standardized, which limits our understanding of the true scope of the problem and potentially leads to event under-reporting. Our objective was...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2018.05.221
更新日期:2019-02-01 00:00:00
abstract::Takayasu aortitis (TA) is a chronic inflammatory disease predominantly seen in young Asian women. The disease is idiopathic and largely affects the aorta and its major branches. The basic pathologic changes in TA are fibrosis and subsequent occlusion of the large arteries. TA is classically termed "pulseless" disease,...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1067/mva.2003.158
更新日期:2003-05-01 00:00:00