Morphodynamics of flow through sinuous curvatures of the heart.

abstract：BACKGROUND:In the microcirculation, red blood cells (RBCs) were observed to be confined to an axial stream surrounded by a marginal RBC depleted layer. This axial accumulation of RBCs is considered to arise from the RBC deformability. OBJECTIVE:To quantitatively evaluate the effect of RBC deformability on their axial ...

journal_title：Biorheology

authors： Sasaki T,Seki J,Itano T,Sugihara-Seki M

更新日期：2018-01-01 00:00:00

abstract：:Elevated shear stress levels in pathologically stenosed vessels induce platelet activation and aggregation, and may play a role in the pathogenesis of arterial disease. Increased plasma catecholamine concentrations have also been implicated in the onset of acute coronary ischemic syndromes. This study was designed to ...

journal_title：Biorheology

authors： Wagner CT,Kroll MH,Chow TW,Hellums JD,Schafer AI

更新日期：1996-05-01 00:00:00

abstract：:Adhesion of monocytes (U-937 cells) along a silicone tube deployed with circular ring stents was studied to test the hypothesis that by intentionally inducing swirling flow in an endovascular stent, the adhesion of monocytes would be suppressed. The results revealed that under a normal flow condition, the flow disturb...

journal_title：Biorheology

authors： Chen Z,Zhang X,Deng X

更新日期：2012-01-01 00:00:00

abstract：:Frozen, stored mucus has been extensively used for transport studies but there is no clear evidence of the influence that the temperature and length of time of storage may have on the results. We stored frog mucus samples at -20 and -80 degrees C and analysed them on days zero, 2, 10, 30 and 90. At each temperature, a...

journal_title：Biorheology

authors： Gastaldi AC,Jardim JR,King M

更新日期：2000-01-01 00:00:00

abstract：:Aggregation of human red blood cells (RBCs) induced by dextrans of various molecular weight has been studied by using a new ultrasonic interferometry method. This method, based on A-mode echography, allowed for the measurement of the accumulation rate of particles on a solid plate which is related to their sedimentati...

journal_title：Biorheology

authors： Razavian SM,Guillemin MT,Guillet R,Beuzard Y,Boynard M

更新日期：1991-01-01 00:00:00

abstract：BACKGROUND:Blood flow in stenotic vessels strongly influences the progression of vascular diseases. Plaques in stenotic blood vessels vary in stiffness, which influences plaque behavior and deformation by pressure and flow. Concurrent changes in plaque geometry can, in turn, affect blood flow conditions. Thus, simultan...

journal_title：Biorheology

authors： Shimizu Y,Ohta M

更新日期：2015-01-01 00:00:00

abstract：:In the past few years there has been a considerable interest in the role of bone in osteoarthritis. Despite the increasing evidence of the involvement of bone in osteoarthritis, it remains very difficult to attribute the cause or effect of changes in subchondral bone to the process of osteoarthritis. Although osteoart...

journal_title：Biorheology

authors： Botter SM,van Osch GJ,Waarsing JH,Day JS,Verhaar JA,Pols HA,van Leeuwen JP,Weinans H

更新日期：2006-01-01 00:00:00

abstract：:We previously reported that intraarticular injections of hyaluronan (HA), administered prophylactically to dogs in whom knee osteoarthritis had been induced by transection of the anterior cruicate ligament, did not significantly modify the intraarticular pathology but decreased the proteogylcan concentration of the ar...

journal_title：Biorheology

authors： Brandt KD,Smith GN,Myers SL

更新日期：2004-01-01 00:00:00

abstract：BACKGROUND:Devices gauging viscoelastic properties of blood during coagulation like the thromboelastograph support fundamental research as well as point of care needs. Associated fibrinolysis data are based on endogenous species or plasminogen activator added to a homogeneous sample prior to clot formation. Digestion i...

journal_title：Biorheology

authors： Lee JS,Kaibara M,O'Rear EA

更新日期：2016-07-29 00:00:00

abstract：BACKGROUND:Foam sclerotherapy is the process of using an aqueous foam to deliver surfactant to a varicose vein to damage vein wall endothelial cells, causing the vein to spasm, collapse and ultimately be re-absorbed into the body. Aqueous foams are complex fluids that can exhibit a significant yield stress and high eff...

journal_title：Biorheology

authors： Roberts TG,Cox SJ,Lewis AL,Jones SA

更新日期：2021-01-13 00:00:00

abstract：:The supply of oxygen to tissue from capillaries may be influenced by hemorheological factors. A hemorheological model is developed for elucidating which factors play a major role in the oxygen transport to tissue. For a capillary tissue unit, a modified cylindrical model of Krogh is used. For blood, two fluids model o...

journal_title：Biorheology

authors： Niimi H,Sugihara M,Yamakawa T

更新日期：1983-01-01 00:00:00

abstract：:Blood vessels are always subjected to hemodynamic stresses including blood pressure and blood flow. The cerebral artery is particularly sensitive to hemodynamic stresses such as pressure and stretch, and shows contractions that are myogenic in nature; i.e., the mechanical response is generated by the vascular smooth m...

journal_title：Biorheology

authors： Nakayama K,Obara K,Tanabe Y,Saito M,Ishikawa T,Nishizawa S

更新日期：2003-01-01 00:00:00

abstract：:Using a large scale model and the concept of dimensional similarity, we have developed a dimensionless correlation which permits the estimation of the drag force of blood flow in an in vivo vessel on a leukocyte adherent to the vessel wall. This relationship is [formula: see text] where Re is a Reynolds number, Cd is ...

journal_title：Biorheology

authors： Chapman G,Cokelet G

更新日期：1996-03-01 00:00:00

abstract：:The viscosity and the order in the interior of human erythrocyte membranes were investigated by the fluorescence depolarization technique in the nanosecond region with 1,6-diphenyl-1,3,5-hexatriene (DPH). After pulsed excitation with a polarized light, the fluorescence anisotropy ratio of DPH in membranes rapidly decr...

journal_title：Biorheology

authors： Araiso T,Shindo Y,Arai T,Nitta J,Kikuchi Y,Kakiuchi Y,Koyama T

更新日期：1986-01-01 00:00:00

abstract：:The well-known S-shaped settling curves are obtained as solutions of an autonomic dynamical system deduced mathematically from the generalized Stokes formula, the blood volume conservation law, and the Smoluchowski theory of particle coagulation. Numerical computations and parametric analysis of the deduced two nonlin...

journal_title：Biorheology

authors： Petrov VG,Edissonov I

更新日期：1996-07-01 00:00:00

abstract：:Although most apparent in permanently misshapen irreversibly sickled erythrocytes (ISC), biochemical and structural alterations are present in the majority of sickle cell membranes. The relationship of membrane rigidity to cell shape and its dependence upon the internal hemoglobin cytosol are not clarified. We therefo...

journal_title：Biorheology

authors： Drasler WJ,Smith CM 2nd,Keller KH

更新日期：1989-01-01 00:00:00

abstract：:Flow induced shear stress influences vascular cellular biology and pathophysiology in numerous ways. Previous in vitro studies on interactions between flow and endothelial cells using parallel-plate flow chambers involve two-dimensional flows, whereas flows in larger vessels are commonly three-dimensional. We have con...

journal_title：Biorheology

authors： Watkins NV,Caro CG,Wang W

更新日期：2002-01-01 00:00:00

abstract：:We present data which show that fibrin gels are ordered network structures, the porosity of which is determined by the amount of thrombin being present during the activation step preceding gelation. On activation of fibrinogen, fibrinopeptides are released and simultaneously polymers are formed, obeying apparent first...

journal_title：Biorheology

authors： Blombäck B,Okada M,Forslind B,Larsson U

更新日期：1984-01-01 00:00:00

abstract：:Ciliary metachronism and motility were examined optically in tissue cultures from frog palate epithelium as a function of extracellular ATP concentration in the range of 10(-7)-10(-3) M. The main findings were: a) upon addition of ATP the metachronal wavelength increased by a factor of up to 2. b) the velocity of the ...

journal_title：Biorheology

authors： Ovadyahu D,Eshel D,Priel Z

更新日期：1988-01-01 00:00:00

abstract：:Arterial hemodynamic forces may play a role in the localization of early atherosclerotic lesions. We have been developing numerical techniques based on overset or "Chimera" type formulations to solve the Navier-Stokes equations in complex geometries simulating arterial bifurcations. This paper presents three-dimension...

journal_title：Biorheology

authors： Cheer AY,Dwyer HA,Barakat AI,Sy E,Bice M

更新日期：1998-11-01 00:00:00

abstract：:An acinus is the principal secretion unit of an exocrine gland. This paper sets up a mathematical model of an acinus and examines the effect on the output of varying the operating parameters, both of the secretion mechanism and the fluid properties. Particular reference is made to acini of the pancreas. The question o...

journal_title：Biorheology

authors： Grigg CH,Fitz-Gerald JM

更新日期：1986-01-01 00:00:00

abstract：:A rigidity index (RI) related to red blood cell deformability was measured by using the hemorheometre. The RI for 13 patients homozygous for sickle cell disease was 109 +/- 44 at 37 degrees C and at atmospheric pO2. The filtration time curve as a function of pO2 is biphasic for sickle cell suspensions. The pO2 at whic...

journal_title：Biorheology

authors： Kraiem A,Craescu CT,Galacteros F,Martin-Caburi J,Domenget C,Garel MC,Beuzard Y

更新日期：1989-01-01 00:00:00

abstract：BACKGROUND:Postmenopausal women often develop hemorheological disorders which may affect the systemic blood circulation and present a cardiovascular risk factor. OBJECTIVE:We evaluated effects of secoisolariciresinol (SECO), a phytoestrogen, on hemorheological parameters and lipid peroxidation in a model of the age-re...

journal_title：Biorheology

authors： Maslov MY,Plotnikova TM,Anishchenko AM,Aliev OI,Nifantiev NE,Plotnikov MB

更新日期：2016-01-07 00:00:00

abstract：:It is widely accepted that whilst exhibiting clinically useful anti-inflammatory and analgesic activity, the application of non-steroidal anti-inflammatory drugs (NSAIDs) does not affect the underlying pathogenesis of articular diseases such as rheumatoid arthritis. The demonstration of a role for COX-2 in the resolut...

journal_title：Biorheology

authors： Colville-Nash PR,Willoughby DA

更新日期：2002-01-01 00:00:00

abstract：:A dilute suspension of Spirulina Microalgae is found to exhibit radial migration in laminar flow in a 650 micron vertical tube. As the tube Reynolds number increases, the particles concentrate in a narrower region around the tube axis. When the turbulent regime is approached, the particles disperse as expected. ...

journal_title：Biorheology

authors： Rakow AL,Chappell ML

更新日期：1987-01-01 00:00:00

abstract：:The separation process of blood and RBC suspensions in a hematocrit range between 0.3-0.7 was investigated with a centrifuge allowed to run at low accelerations (100 xg-1000 xg). The position of the interface between the supernatant of plasma and the RBC column was continuously recorded by a new optoelectronic measuri...

journal_title：Biorheology

authors： Lerche D,Bilsing R

更新日期：1988-01-01 00:00:00

abstract：BACKGROUND:In order to play different roles in vascular functions as a mechanosensor to blood flows and as a barrier to transvascular exchange, the endothelial surface glycocalyx (ESG) should have an organized structure. Due to the limitations of optical and electron microscopy, the ultra-structure of ESG has not been ...

journal_title：Biorheology

authors： Fan J,Sun Y,Xia Y,Tarbell JM,Fu BM

更新日期：2019-01-01 00:00:00

abstract：:Rheological measurements on a high molecular weight Hyaluronic Acid (from rooster combs) were performed to obtain information on the viscoelastic and temporary network characteristics of Hyaluronic Acid solutions as a function of the concentration. From rheological experiments, the critical concentration c* and the co...

journal_title：Biorheology

authors： De Smedt SC,Dekeyser P,Ribitsch V,Lauwers A,Demeester J

更新日期：1993-01-01 00:00:00

abstract：:The AC electric field-driven manipulation of suspended polarizable particles has become a major technique in micro- and nano-devices. In the present study, suspensions of cultured HeLa cells in isotonic solution were used to explore the mechanisms underlying the suspension behaviors during exposure to a uniform AC ele...

journal_title：Biorheology

authors： Tada S,Natsuya T,Tsukamoto A,Santo Y

更新日期：2013-01-01 00:00:00

abstract：BACKGROUND:Red blood cell (RBC) deformability may increase, or decrease, following application of shear stress ("shear conditioning"), depending upon the specific magnitude and duration of exposure. However, the time course of altered RBC deformability following shear remains unresolved. OBJECTIVE:We utilised shear co...

journal_title：Biorheology

authors： Kuck L,Grau M,Simmonds MJ

更新日期：2018-01-01 00:00:00