Abstract:
UNLABELLED:Nitric oxide (NO) and cyclooxygenase (COX) derived prostaglandins (PGs) are involved in vascular homeostasis. Contradictory results have been obtained in previous studies on the putative 'cross-talk' between these two pathways. Our aim was to evaluate the interaction between NO and PG release in human microvascular endothelial cells (HMEC-1) and in umbilical vein endothelial cells (HUVEC). METHODS:Medium samples were assayed for nitrite/nitrate (NO(x)) and L-citrulline levels while lysed cells were assayed for endothelial NO synthase (eNOS), as markers of NO production. Prostaglandin E2 (PGE2) and 6-keto-prostaglandin F1alpha (6-keto-PGF1alpha) were assessed as indicators of COX activity. RESULTS:The NO donor sodium nitroprusside and L-arginine increased PGs levels in both cell types. N(G)-monomethyl-L-arginine (L-NMMA) significantly inhibited 6-keto-PGF1alpha release without significantly reducing PGE2)levels. Indomethacin increased both NO(x), eNOS and L-citrulline levels. PGE2 treatment did not modify NO(x) values. CONCLUSION:The stimulation of PGs by NO may represent an additional pathway used by exogenous nitrovasodilators to elicit vasodilation. Reduction of PGs by inhibition of COX was compensated by enhanced NO. Conversely, PGs()did not compensate()decreased NO following L-NMMA treatment. Treatment with the vasodilatator prostaglandin E2 did not modify NO(x) levels.
journal_name
J Vasc Resjournal_title
Journal of vascular researchauthors
Vassalle C,Domenici C,Lubrano V,L'Abbate Adoi
10.1159/000074550keywords:
subject
Has Abstractpub_date
2003-09-01 00:00:00pages
491-9issue
5eissn
1018-1172issn
1423-0135pii
74550journal_volume
40pub_type
杂志文章abstract::Fibroblast growth factor-2 (FGF2) and vascular endothelial growth factor (VEGF) exert their angiogenic activity by interacting with endothelial cells in a distinct manner. In this study, we investigated the morphological features of endothelial cells of the chick embryo chorioallantoic membrane (CAM) microvasculature ...
journal_title:Journal of vascular research
pub_type: 杂志文章
doi:10.1159/000051070
更新日期:2001-07-01 00:00:00
abstract:BACKGROUND:Transfer of molecular signals from veins to adjacent arteries is an established mechanism of vascular communication in the uterine circulation, which ultimately depends on venous permeability. This study tests the hypotheses that: (1) uterine veins are permeable to intravenous solutes, using a 3-kDa dextran ...
journal_title:Journal of vascular research
pub_type: 杂志文章
doi:10.1159/000082976
更新日期:2005-01-01 00:00:00
abstract:AIMS:The effects of ischemia and hypercholesterolemia on the function and morphological adaptation of the rabbit hindlimb were assessed. METHODS:In rabbits on normal or cholesterol diet, experiments were performed on days 0-28 following bilateral femoral artery ligation. Calf blood pressure (C(BP)), exercise tolerance...
journal_title:Journal of vascular research
pub_type: 杂志文章
doi:10.1159/000113600
更新日期:2008-01-01 00:00:00
abstract::Regulation of [Ca2+]i and modulation of the [Ca2+]i sensitivity of myosin phosphorylation in smooth muscles may involve phosphorylation of one or more proteins on tyrosine residues. We tested this hypothesis by measuring tyrosine phosphorylation of proteins extracted from swine carotid artery and separated by SDS gel ...
journal_title:Journal of vascular research
pub_type: 杂志文章
doi:10.1159/000159196
更新日期:1997-01-01 00:00:00
abstract:BACKGROUND:Lipoxin A4 (LXA4) is a biologically active product generated from arachidonic acid by lipoxygenase action. The production of lipoxins is enhanced by aspirin through acetylation of cyclooxygenase-2, via a mechanism known as 'aspirin-triggered lipoxin'. LXA4 has both anti-inflammatory and proinflammatory actio...
journal_title:Journal of vascular research
pub_type: 杂志文章
doi:10.1159/000371490
更新日期:2014-01-01 00:00:00
abstract::The novel endothelial cell tyrosine kinase receptors, Tie1 and Tie2, are essential for vascular development and remodeling in the embryo but little is known regarding the regulation of their expression and their role in the maintenance and repair of the adult vascular system. We examined the expression of Tie1 and Tie...
journal_title:Journal of vascular research
pub_type: 杂志文章
doi:10.1159/000025655
更新日期:1999-07-01 00:00:00
abstract::Migration of vascular smooth muscle cells (SMCs) leading to neointimal hyperplasia is an early and cardinal feature of atherogenesis. Migration of rat aortic SMCs from an upper chamber towards a lower one has been studied in a microchemotaxis (Boyden) chamber. Spontaneous migration of SMCs was practically prevented by...
journal_title:Journal of vascular research
pub_type: 杂志文章
doi:10.1159/000025580
更新日期:1998-05-01 00:00:00
abstract::This study utilised catecholamine fluorescence histochemistry, multiple-labelling immunohistochemistry and retrograde axonal transport to determine the distribution and neuropeptide content of sympathetic neurons innervating veins in the dorsal skin of the guinea pig pinna. There was a dense plexus of sympathetic axon...
journal_title:Journal of vascular research
pub_type: 杂志文章
doi:10.1159/000159113
更新日期:1995-11-01 00:00:00
abstract::Studies on the possible causal relationship between the Ca2+ channel current density in the vascular muscle cell (VMC) and increases in blood pressure were extended by a comparison of stroke-prone spontaneously hypertensive rats (SP-SHR) with N/nih outbred normotensive rats. Maximal amplitudes of both L-type and T-typ...
journal_title:Journal of vascular research
pub_type: 杂志文章
doi:10.1159/000159064
更新日期:1994-11-01 00:00:00
abstract::The effect of shear stress at the endothelium in the attenuation of the noradrenaline-induced constriction of the femoral vascular bed perfused at a constant blood flow was investigated in 16 anesthetized cats. It is known that the adrenergic vasoconstriction of the femoral vascular bed is considerably greater at a co...
journal_title:Journal of vascular research
pub_type: 杂志文章
doi:10.1159/000097750
更新日期:2007-01-01 00:00:00
abstract::Dietary flavonoids are thought to protect against cardiovascular disease. We have studied the effects of bioactive isoflavone metabolites on hyperlipidemia, endothelial dysfunction and the development of atherosclerotic lesions in apolipoprotein E-deficient (apoE(0)) mice fed a Western high-fat diet. Supplementation w...
journal_title:Journal of vascular research
pub_type: 杂志文章
doi:10.1159/000071891
更新日期:2003-05-01 00:00:00
abstract:BACKGROUND:The aim of the present study was to evaluate different signaling pathways by which exercise training would interfere in endothelial function in obesity. Therefore, we examined adipocytokine levels and their receptors in the corpus cavernosum and femoral artery from trained rats on a high-fat diet. METHODS:F...
journal_title:Journal of vascular research
pub_type: 杂志文章
doi:10.1159/000457800
更新日期:2017-01-01 00:00:00
abstract::The release of cytokines and chemokines from activated immune-competent cells plays a crucial role in determining the pathology of the atherogenic progress. We investigated the effect of bacterial lipopolysaccharide (LPS) on cytokine/chemokine expression in carotid lesions and normal renal arteries. The lesions or ren...
journal_title:Journal of vascular research
pub_type: 杂志文章
doi:10.1159/000085721
更新日期:2005-05-01 00:00:00
abstract::Dynamic visualization of the intravascular events leading to the extravasation of leukocytes into tissues by intravital microscopy has significantly expanded our understanding of the underlying molecular processes. In contrast, the detailed observation of leukocyte transendothelial and interstitial migration in vivo h...
journal_title:Journal of vascular research
pub_type: 杂志文章
doi:10.1159/000073902
更新日期:2003-09-01 00:00:00
abstract::Actions of the novel Ca2+ antagonist, Ro 40-5967, which displays unusual efficacy against endothelin (ET)-induced contractions, were studied in isolated vascular muscle cells (VMCs) using the fluorescent protein kinase C (PKC) indicator, BODIPY 12 alpha-phorbol ester 13 beta-acetate (PBA-BODIPY). High-sensitivity (pho...
journal_title:Journal of vascular research
pub_type: 杂志文章
doi:10.1159/000159134
更新日期:1996-01-01 00:00:00
abstract::The mechanosensitive nonselective cation channel (NSC(MS)) is a key player in vascular myogenic contraction. The functional channel density and pressure sensitivity of NSC(MS) in vascular myocytes were compared between pulmonary and systemic arteries (coronary, mesenteric and cerebral arteries) in the rabbit. In cell-...
journal_title:Journal of vascular research
pub_type: 杂志文章
doi:10.1159/000093607
更新日期:2006-01-01 00:00:00
abstract::The aim of this study was to verify that subcutaneous lymph node transplantation inducing lymphatic regeneration is possible in healthy adult rats, in analogy to results obtained in other species. This rat model was used to determine the effects of lymph node fragmentation as well as sheep erythrocytes and platelet-ri...
journal_title:Journal of vascular research
pub_type: 杂志文章
doi:10.1159/000194269
更新日期:2009-01-01 00:00:00
abstract::This study was designed to establish the in vitro pharmacological responses of rat middle cerebral arteries (MCA), and also their susceptibility to overnight cold storage at 4 degrees C. MCAs were harvested from rats and pharmacological responses were studied using a Mulvany myograph. Responses to prostaglandin F2 alp...
journal_title:Journal of vascular research
pub_type: 杂志文章
doi:10.1159/000159097
更新日期:1995-07-01 00:00:00
abstract::Insulin was reported to decrease Na(+)/H(+) exchange activity in murine vascular smooth muscle (VSM) tissue. In most other cells, insulin increases activity. We tested the effects of insulin on Na(+)/H(+) exchange activity in primary cultured canine VSM cells. Intracellular pH (pH(i)) was measured with 2',7'-bis(2-car...
journal_title:Journal of vascular research
pub_type: 杂志文章
doi:10.1159/000329587
更新日期:2011-01-01 00:00:00
abstract:PURPOSE:Hypoxic conditions cause fibroblasts to differentiate into alpha smooth-muscle cell actin (α -SMA)-positive cells, i.e. myofibroblasts. This process is a hallmark of venous neointimal hyperplasia (VNH) associated with hemodialysis vascular access. The purpose of this study was to determine if blood outgrowth en...
journal_title:Journal of vascular research
pub_type: 杂志文章
doi:10.1159/000369929
更新日期:2014-01-01 00:00:00
abstract:OBJECTIVES:Hyperuricemia provokes endothelial dysfunction (ECD). Decreased endothelial nitric oxide synthase (eNOS) activity is an important source of ECD. Cationic amino acid transporter-1 (CAT-1) is the specific arginine transporter for eNOS. We hypothesize that hyperuricemia inhibits arginine uptake. METHODS:Experi...
journal_title:Journal of vascular research
pub_type: 杂志文章
doi:10.1159/000320356
更新日期:2011-01-01 00:00:00
abstract::In response to stimuli, endothelial cells release arachidonic acid, a lipid precursor of various vasoactive substances. We have investigated the relationships between cytosolic Ca2+ movements and arachidonic acid release in human umbilical vein endothelial cells. Histamine, a receptor-dependent agonist, and thapsigarg...
journal_title:Journal of vascular research
pub_type: 杂志文章
doi:10.1159/000025647
更新日期:1999-05-01 00:00:00
abstract::We evaluated the effects of a simulated workday of prolonged sitting on blood pressure (BP) and pulse wave velocity (PWV) and examined whether posture (seated vs. supine) affected responses. Participants (n = 25) were adults, with overweight/obesity and elevated BP, and performed seated desk work for 7.5 h. BP and PWV...
journal_title:Journal of vascular research
pub_type: 杂志文章,随机对照试验
doi:10.1159/000510294
更新日期:2020-01-01 00:00:00
abstract:BACKGROUND/AIMS:The endothelium has been recognized as a key component in the regulation of blood vessels. We designed a simple procedure to separate endothelial and smooth muscle RNA from rat aorta and mesenteric artery and used this method to establish the distribution of Na(+)/K(+)-ATPase alpha-subunit isoforms (NaK...
journal_title:Journal of vascular research
pub_type: 杂志文章
doi:10.1159/000095963
更新日期:2006-01-01 00:00:00
abstract:OBJECTIVE:It is well known that inflammation plays key roles in the development of atherosclerosis and that the transplantation of bone marrow mononuclear cells (BMMNCs) can suppress inflammation in rodent models of ischemic diseases. Here, we explored whether transplantation of autologous BMMNCs could prevent the prog...
journal_title:Journal of vascular research
pub_type: 杂志文章
doi:10.1159/000449201
更新日期:2016-01-01 00:00:00
abstract::Atherosclerosis underlies late occlusion of human saphenous vein (HSV) coronary artery bypass grafts. Monocyte infiltration is implicated, but its mechanisms are unclear given that HSV normally expresses the ICAM-1 but not the VCAM-1 adhesion molecule. To define the mechanisms underlying monocyte adhesion, samples of ...
journal_title:Journal of vascular research
pub_type: 杂志文章
doi:10.1159/000063687
更新日期:2002-05-01 00:00:00
abstract::The influence of vascular endothelium on ouabain-induced contractions and sodium pump activity in aortic segments of Wistar-Kyoto (WKY) and spontaneously hypertensive rat (SHR) was analyzed. De-endothelialization increased and reduced ouabain-induced contractions in WKY and SHR segments, respectively. The effects of d...
journal_title:Journal of vascular research
pub_type: 杂志文章
doi:10.1159/000159145
更新日期:1996-03-01 00:00:00
abstract:PURPOSE:Exercise elicits early adaptation of coronary vessels enabling the coronary circulation to respond adequately to higher flow demands. We hypothesized that short-term daily exercise induces biomechanical and functional remodeling of the coronary resistance arteries related to pressure. METHODS:Male rats were su...
journal_title:Journal of vascular research
pub_type: 杂志文章
doi:10.1159/000486571
更新日期:2018-01-01 00:00:00
abstract::Mesenteric endothelial cell function and immunoreactivity for substance P and nitric oxide synthase (NOS) were examined in control rats and rats treated with capsaicin as neonates to destroy primary afferent nerves. Endothelial vasodilator function was examined pharmacologically in the methoxamine raised-tone isolated...
journal_title:Journal of vascular research
pub_type: 杂志文章
doi:10.1159/000159106
更新日期:1995-09-01 00:00:00
abstract::The effects of the close arterial infusion of histamine upon the microcirculation of facial and nasal tissues were examined in dogs. Blood flow through arteriovenous anastomoses (AVA flow), capillaries (CAP flow) and collaterals (COL flow) were determined by electromagnetic flowmetry and the tracer-microsphere techniq...
journal_title:Journal of vascular research
pub_type: 杂志文章
doi:10.1159/000158972
更新日期:1993-01-01 00:00:00