9618 results
Cited 4 times since 1999 (0.2 per year)
source: EuropePMC
Seminars in thoracic and cardiovascular surgery,
Volume 11, Issue 4 Suppl 1, 1 1 1999, Pages 133-138
Dehiscence of the Freestyle stentless bioprosthesis.
Schoof PH, Baur LH, Kappetein AP, Hazekamp MG, van Rijk-Zwikker GL, Huysmans HA
This study aimed to identify and characterize patients who developed prosthetic dehiscence after aortic valve replacement with the Freestyle Stentless bioprosthesis. Review of patients' records and preoperative echocardiogram was performed. Prosthetic dehiscence developed in 10 patients after 2.5 to 49 months (mean 19). Most patients were symptomatic at presentation. Nine patients were reoperated. Dehiscence was typically located at the inflow suture line beneath the noncoronary cusp. Four...
Abstract
Cited 83 times since 1999 (3.2 per year)
source: EuropePMC
Cell death and differentiation,
Volume 6, Issue 10, 1 1 1999, Pages 976-986
The La (SS-B) autoantigen, a key protein in RNA biogenesis, is dephosphorylated and cleaved early during apoptosis.
Rutjes SA, Utz PJ, van der Heijden A, Broekhuis C, van Venrooij WJ, Pruijn GJ
In the past few years, a role for apoptotic processes in the development of autoimmune diseases has been suggested. An increasing number of cellular proteins, which are modified during apoptosis, has been described, and many of these proteins have been identified as autoantigens. We have studied the effects of apoptosis on the La protein in more detail and for the first time demonstrate that this autoantigen is rapidly dephosphorylated after the induction of apoptosis. Dephosphorylation of the L...
Abstract
Cited 13 times since 1999 (0.5 per year)
source: EuropePMC
Journal of magnetic resonance imaging : JMRI,
Volume 10, Issue 3, 1 1 1999, Pages 434-441
Evaluation of coronary artery bypass grafts by magnetic resonance imaging.
Langerak SE, Kunz P, de Roos A, Vliegen HW, van Der Wall EE
Magnetic resonance (MR) angiography and flow mapping have the potential to become a major noninvasive diagnostic tool for the assessment of coronary artery bypass graft morphology and function. Several MR sequences, such as conventional non-respiratory compensated methods, and phase contrast cine flow sequences have been reported for the evaluation of bypass graft patency. However the visualization of different graft segments and the detection of graft stenosis remains difficult. Recent advances...
Abstract
Cited 6 times since 1999 (0.2 per year)
source: EuropePMC
Indian journal of pediatrics,
Volume 66, Issue 5, 1 1 1999, Pages 651-655
Antioxidant defense systems in newborns undergoing phototherapy.
Akisü M, Yilmaz D, Tüzün S, Kültürsay N
This paper was designed to investigate whether phototherapy is an oxidative stress in newborn infants undergoing phototherapy. A day-light continuous phototherapy was given to jaundiced 20 term and 16 preterm newborns for 72 hours. We measured serum vitamin E and the activities of red blood cell anti-oxidation enzymes (superoxide dismutase, catalase and glutathione peroxidase) before and after 72 h of phototherapy. Serum vitamin E levels were not different before and after 72 h of phototherapy i...
Abstract
Cited 7 times since 1999 (0.3 per year)
source: EuropePMC
Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography,
Volume 12, Issue 9, 1 1 1999, Pages 729-735
Echocardiographic parameters of the freestyle stentless bioprosthesis in aortic position: the European experience.
Baur LH, Jin XY, Houdas Y, Peels CH, Braun J, Kappetein AP, Prat A, Hazekamp MG, Van Straten BH, Ploeg A, Sieders A, Voogd PJ, Bruschke AV, van der Wall EE, Westaby S, Huysmans HA
The objective of this study was to determine normal Doppler and 2-dimensional characteristics of the Freestyle stentless aortic bioprosthesis. The Freestyle aortic bioprosthesis is a new type of aortic xenograft, and experience is limited. We therefore determined the normal range of echocardiographic and Doppler examinations of this valve. Three hundred thirty-nine consecutive patients with a Freestyle aortic bioprosthesis underwent an echocardiographic and Doppler examination according to a com...
Abstract
Cited 5 times since 1999 (0.2 per year)
source: EuropePMC
Catheterization and cardiovascular interventions : official journal of the Society for Cardiac Angiography & Interventions,
Volume 48, Issue 1, 1 1 1999, Pages 105-112
Stenting of long coronary artery lesions: initial angiographic results and 6-month clinical outcome of the micro stent II-XL.
Schalij MJ, Udayachalerm W, Oemrawsingh P, Jukema JW, Reiber JH, Bruschke AV
To evaluate the results of long Micro Stent II (MS-XL) implantations, 119 MS-XLs were implanted in 102 patients (age, 62.83 years). Nineteen stents (16%) were implanted in saphenous vein grafts; 100 stents (84%) were implanted in native coronary arteries. Twenty-five patients (25%) were treated because of acute myocardial infarction (AMI); 30 patients (29%) because of unstable angina or angina class IV, and 47 patients (46%) because of stable angina. Eighty-six de novo lesions (84%) and 16 reste...
Abstract
Cited 3 times since 1999 (0.1 per year)
source: EuropePMC
Journal of spinal disorders,
Volume 12, Issue 4, 1 1 1999, Pages 341-347
Curvature of the lower lumbar facet joints: variations at different levels and relationship with orientation.
van Schaik JP, van Pinxteren B
The curvature of the lower lumbar facet joints in the transverse plane was measured using an innovative computed tomographic approach, and its relationship with the orientation of the joints was evaluated. Two hundred three vertebral levels were examined in 116 patients with low back pain. Reference circles were used to quantify joint curvature. The mean curvature (+/- SD) at the levels L3-L4, L4-L5, and L5-S1 conformed to circles of 27.3 mm +/- 11.5; 35.1 mm +/- 14.6; and 51.0 mm +/- 34.5 in di...
Abstract
Cited 40 times since 1999 (1.5 per year)
source: EuropePMC
The Journal of thoracic and cardiovascular surgery,
Volume 118, Issue 2, 1 1 1999, Pages 252-258
Brom's three-patch technique for repair of supravalvular aortic stenosis.
Hazekamp MG, Kappetein AP, Schoof PH, Ottenkamp J, Witsenburg M, Huysmans HA, Bogers AJ
Objective: Case histories of all patients (n = 29) operated on for supravalvular aortic stenosis from 1962 to the present were reviewed to study different techniques and outcomes. The technique of symmetric aortoplasty with 3 patches (1 in each sinus) is described and compared with other methods. Methods: Case reports were reviewed and follow-up was completed by contacting the patient's (pediatric) cardiologist. We aimed for a last follow-up visit, including Doppler echocardiographic studie...
Abstract
Cited 4 times since 1999 (0.2 per year)
source: EuropePMC
Heart (British Cardiac Society),
Volume 82, Issue 2, 1 1 1999, Pages 126-127
Matching treatment to the genetic basis of (lipid) disorder in patients with coronary artery disease.
Jukema JW
Abstract
Cited 126 times since 1999 (4.8 per year)
source: EuropePMC
Journal of virology,
Volume 73, Issue 8, 1 1 1999, Pages 6335-6345
Identification of a novel structural protein of arteriviruses.
Snijder EJ, van Tol H, Pedersen KW, Raamsman MJ, de Vries AA
Arteriviruses are positive-stranded RNA viruses with an efficiently organized, polycistronic genome. A short region between the replicase gene and open reading frame (ORF) 2 of the equine arteritis virus (EAV) genome was previously assumed to be untranslated. However, here we report that this segment of the EAV genome contains the 5' part of a novel gene (ORF 2a) which is conserved in all arteriviruses. The 3' part of EAV ORF 2a overlaps with the 5' part of the former ORF 2 (now r...
Abstract
Cited 5 times since 1999 (0.2 per year)
source: EuropePMC
European journal of vascular and endovascular surgery : the official journal of the European Society for Vascular Surgery,
Volume 18, Issue 2, 1 1 1999, Pages 174-175
Spontaneous perforation of an aortic endoprosthesis.
Breek JC, Hamming JF, Lohle PN, Lampmann LE, van Berge Henegouwen DP
Abstract
Cited 68 times since 1999 (2.6 per year)
source: EuropePMC
The Journal of biological chemistry,
Volume 274, Issue 35, 1 1 1999, Pages 24799-24807
Rapid nucleolytic degradation of the small cytoplasmic Y RNAs during apoptosis.
Rutjes SA, van der Heijden A, Utz PJ, van Venrooij WJ, Pruijn GJ
We have investigated the fate of the RNA components of small ribonucleoprotein particles in apoptotic cells. We show that the cytoplasmic Ro ribonucleoprotein-associated Y RNAs are specifically and rapidly degraded during apoptosis via a caspase-dependent mechanism. This is the first study describing the selective degradation of a specific class of small structural RNA molecules in apoptotic cells. Cleavage and subsequent truncation of Y RNAs was observed upon exposure of cells to a variety of a...
Abstract
Cited 6 times since 1999 (0.2 per year)
source: EuropePMC
Early human development,
Volume 55, Issue 3, 1 1 1999, Pages 237-245
Electrocortical brain activity during hypoxia and hypotension in anesthetized newborn lambs.
van de Bor M, Meinesz J, Benders MJ, Steendijk P, Lopes Cardozo RH, van Bel F
Blood gas and blood pressure disturbances do influence cerebral blood flow in newborns. To what extent cerebral blood flow changes affect electrocortical brain activity remains uncertain. We studied the effect of severe hypoxia and hemorrhagic hypotension on carotid artery blood flow and electrocortical brain activity in newborn anesthetized lambs. During hypoxia carotid artery blood flow increased significantly, whereas electrocortical brain activity remained unchanged. The hemorrhagic hypotens...
Abstract
Cited 12 times since 1999 (0.5 per year)
source: EuropePMC
Cardiovascular research,
Volume 43, Issue 1, 1 1 1999, Pages 86-95
Right ventricular systolic function and ventricular interaction during acute embolisation of the left anterior descending coronary artery in sheep.
Jerzewski A, Steendijk P, Pattynama PM, Leeuwenburgh BP, de Roos A, Baan J
Objective: Regional LV ischemia involving the septum affects LV systolic function and geometry. We investigated the effects of these changes on RV function and geometry. Methods: In six closed-chest sheep end-systolic pressure-volume relationships (ESPVRs) were constructed from ventricular volumes, measured with magnetic resonance imaging (MRI) and matching intraventricular pressures, before and after selective embolisation of the left anterior descending coronary artery (LAD). The extent of myo...
Abstract
Cited 118 times since 1999 (4.5 per year)
source: EuropePMC
The Journal of clinical endocrinology and metabolism,
Volume 84, Issue 7, 1 1 1999, Pages 2496-2501
Serum inhibin B in combination with serum follicle-stimulating hormone (FSH) is a more sensitive marker than serum FSH alone for impaired spermatogenesis in men, but cannot predict the presence of sperm in testicular tissue samples.
von Eckardstein S, Simoni M, Bergmann M, Weinbauer GF, Gassner P, Schepers AG, Nieschlag E
The measurement of serum FSH is useful in the diagnostic workup of the infertile male, but fails to predict the presence of sperm in testicular tissue. We investigated whether inhibin B reflects testicular morphology and the presence of sperm more accurately than FSH. Serum inhibin B and gonadotropin levels were determined in 91 infertile men undergoing diagnostic bilateral testicular biopsy. In 52 of the 91 patients multiple samples were taken for testicular sperm extraction (TESE). Inhibin B l...
Abstract
Cited 31 times since 1999 (1.2 per year)
source: EuropePMC
Cell and tissue research,
Volume 297, Issue 1, 1 1 1999, Pages 119-130
Ultrastructure and distribution dynamics of chloride cells in tilapia larvae in fresh water and sea water.
van der Heijden AJ, van der Meij JC, Flik G, Wendelaar Bonga SE
Integumental and branchial chloride cells of tilapia larvae (Oreochromis mossambicus) were studied at the light-microscopical and ultrastructural level. Total numbers and distribution of chloride cells were quantified after immunostaining of cross sections of the entire larvae with an antibody against the alpha-subunit of Na+/K+-ATPase. The majority (66%) of Na+/K+-ATPase-immunoreactive (ir) cells, i.e. chloride cells, of freshwater tilapia larvae were located extrabranchially up to 48 h after h...
Abstract
Cited 175 times since 1999 (6.7 per year)
source: EuropePMC
Journal of human evolution,
Volume 36, Issue 6, 1 1 1999, Pages 719-741
The conditions for tool use in primates: implications for the evolution of material culture.
van Schaik CP, Deaner RO, Merrill MY
In order to identify the conditions that favored the flourishing of primate tool use into hominid technology, we examine inter- and intraspecific variation in manufacture and use of tools in extant nonhuman primates, and develop a model to account for their distribution. We focus on tools used in acquiring food, usually by extraction. Any model for the evolution of the use of feeding tools must explain why tool use is found in only a small subset of primate species, why many of these species use...
Abstract
Cited 2 times since 1999 (0.1 per year)
source: EuropePMC
Clinical chemistry,
Volume 45, Issue 6 Pt 1, 1 1 1999, Pages 771-776
Optimization of apolipoprotein(a) genotyping with pulsed field gel electrophoresis.
Griffioen PH, Zwang L, van Schaik RH, Engel H, Lindemans J, Cobbaert CM
Background: Increased lipoprotein(a) is a risk factor for atherosclerosis, and its concentration in serum is inversely correlated with the size of the apoliprotein(a) [apo(a)] component. The size of the apo(a) gene is determined mainly by the Kringle IV size polymorphism. We have optimized and characterized pulsed field gel electrophoresis (PFGE) for apo(a) genotyping. Methods: Established PFGE protocols were adjusted. The changes included the following: (a) increased DNA yields by the use of al...
Abstract
Cited 12 times since 1999 (0.5 per year)
source: EuropePMC
European journal of clinical investigation,
Volume 29, Issue 6, 1 1 1999, Pages 553-560
Acute-phase response patterns in isolated hepatic perfusion with tumour necrosis factor alpha (TNF-alpha) and melphalan in patients with colorectal liver metastases.
De Vries MR, Borel Rinkes IH, Swaak AJ, Hack CE, Van De Velde CJ, Wiggers T, Tollenaar RA, Kuppen PJ, Eggermont AM
Background: In this study, we have evaluated hepatotoxicity, secondary cytokine production and hepatic acute-phase response (APR) in patients who underwent isolated hepatic perfusion (IHP) with tumour necrosis factor (TNF) alpha and melphalan for irresectable colorectal liver metastases. Design: An extracorporeal veno-venous bypass was used to shunt blood from the lower body and intestines to the heart. Inflow catheters were placed in the hepatic artery and portal vein, and an outflow catheter i...
Abstract
Cited 23 times since 1999 (0.9 per year)
source: EuropePMC
Journal of chromatography. A,
Volume 844, Issue 1-2, 1 1 1999, Pages 295-305
Trace-level determination of polar flavour compounds in butter by solid-phase extraction and gas chromatography-mass spectrometry.
Adahchour M, Vreuls RJ, van der Heijden A, Brinkman UA
Volatile compounds are responsible for the aromas of butter. A simple technique for the determination of these components is described which is based on solid-phase extraction (SPE) after melting of the butter and separation of the aqueous phase from the fat. Volatile flavours present in the water fraction are collected by off-line SPE on cartidges packed with a copolymer sorbent. After desorption with 500 microliters of methyl acetate, 1-microliter aliquots are quantified and/or identified by g...
Abstract
