- Surface tension transport of prey by feeding shorebirds: the capillary ratchet
Center for Bits and Atoms, Massachusetts Institute of Technology MIT, 20 Ames Street, Cambridge, MA 02139, USA
Science 320:931-4. 2008
..One such feeding mechanism in shorebirds involves surface tension-induced transport of prey in millimetric droplets: By repeatedly opening and closing its beak in a tweezering ..
- Interfacial tension of phosphatidylcholine-cholesterol system in monolayers at the air/water interface
Laboratory of Interfacial Electrochemistry, Faculty of Chemistry, University of Warsaw, PL 02 093, Pasteura 1, Warsaw, Poland
Biophys Chem 95:173-9. 2002
..Its value equals 18 mN/m. The difference between the stability constant of 1:1 complex in the bilayer and the monolayer at the air/water interface is discussed...
- Physicochemical parameters associated with nanoparticle formation in the salting-out, emulsification-diffusion, and nanoprecipitation methods
Pharmapeptides, Geneva Lyon Interuniversity Centre, 74166 Archamps, France
Pharm Res 21:1428-39. 2004
..The aim of this work was to relate the physicochemical properties of the aqueous and organic phases used for nanoparticle (NP) preparation to the formation of NP produced by salting-out, emulsification-diffusion, and nanoprecipitation...
- Deformation and flow of membrane into tethers extracted from neuronal growth cones
F M Hochmuth
Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, USA
Biophys J 70:358-69. 1996
..7 x 10(-19) N.m and an extraordinarily small "apparent surface tension" in the growth cone of 0...
- Comparison of methods to detect biosurfactant production by diverse microorganisms
Noha H Youssef
Department of Botany and Microbiology, University of Oklahoma, 770 Van Vleet Oval Norman, OK 73019, USA
J Microbiol Methods 56:339-47. 2004
..were compared for their ease of use and reliability in relation to the ability of the cultures to reduce surface tension. The three methods were used to test for biosurfactant production in 205 environmental strains with different ..
- Pulmonary surfactant surface tension influences alveolar capillary shape and oxygenation
Division of Pulmonary Biology, Cincinnati Children s Hospital Medical Center, Cincinnati, OH 45229 3039, USA
Am J Respir Cell Mol Biol 41:433-9. 2009
..hypothesized that the shape of alveolar capillaries and accompanying oxygenation are influenced by surfactant surface tension in the alveolus...
- Coaction of intercellular adhesion and cortical tension specifies tissue surface tension
M Lisa Manning
Princeton Center for Theoretical Science, Princeton University, Princeton, NJ 08544, USA
Proc Natl Acad Sci U S A 107:12517-22. 2010
..Based on this similarity, it has been proposed that tissues behave as liquids and possess a characteristic surface tension, which arises as a collective, macroscopic property of groups of mobile, cohering cells...
- Interfacial tension of bilayer lipid membrane formed from phosphatidylethanolamine
Aneta D Petelska
Institute of Chemistry, University of Bialystok, Al J Pilsudskiego 11 4, Bialystok 15 443, Poland
Biochim Biophys Acta 1567:79-86. 2002
..A theoretical equation is derived to describe this dependence in the whole pH range. A maximum corresponding to the isoelectric point appears both in the theoretical equation and in the experimental data...
- Well-defined critical association concentration and rapid adsorption at the air/water interface of a short amphiphilic polymer, amphipol A8-35: a study by Förster resonance energy transfer and dynamic surface tension measurements
UMR 7099, CNRS Université Paris 7, Institut de Biologie Physico Chimique, 13 rue Pierre et Marie Curie, F 75005 Paris, France
Langmuir 28:10372-80. 2012
..This indicates that assembly takes place in a narrow concentration interval around 0.002 g·L(-1). Surface tension measurements decreases regularly with concentration until a threshold of ca. 0...
- The Differential Interfacial Tension Hypothesis (DITH): a comprehensive theory for the self-rearrangement of embryonic cells and tissues
G Wayne Brodland
Department of Civil Engineering, University of Waterloo, ON, Canada
J Biomech Eng 124:188-97. 2002
..The theory is used to derive conditions for the cell and tissue rearrangements named above. Finite element-based computer simulations involving two or more cell types confirm these conditions...
- Development of a low-resource RNA extraction cassette based on surface tension valves
Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee 37235, USA
ACS Appl Mater Interfaces 3:2161-8. 2011
..Processing solutions are separated by air gaps and held in place during processing by the surface tension forces at the liquid-air interface, viz. surface tension valves...
- Role for stress fiber contraction in surface tension development and stretch-activated channel regulation in C2C12 myoblasts
Department of Physics, Centro Studi Dinamiche Complesse, University of Florence, Florence, Italy
Am J Physiol Cell Physiol 295:C160-72. 2008
..Together, these data provide the first experimental evidence for a crucial role of SF contraction in SAC activation. The related changes in cell viscosity may prevent SAC from abnormal activation...
- Biophysics: water-repellent legs of water striders
Key Laboratory of Organic Solids, Institute of Chemistry, Beijing 100080, China
Nature 432:36. 2004
..We show here, however, that it is the special hierarchical structure of the legs, which are covered by large numbers of oriented tiny hairs (microsetae) with fine nanogrooves, that is more important in inducing this water resistance...
- Inhibition of pulmonary surfactant adsorption by serum and the mechanisms of reversal by hydrophilic polymers: theory
Joseph A Zasadzinski
Department of Chemical Engineering, University of California, Santa Barbara, California 93106, USA
Biophys J 89:1621-9. 2005
..Natural hydrophilic polymers, like the SP-A present in native surfactant, or hyaluronan, normally present in the alveolar fluids, can enhance adsorption in the presence of serum to eliminate inactivation...
- Flow rate analysis of a surface tension driven passive micropump
MacDiarmid Institute for Advanced Materials and Nanotechnology, Department of Electrical and Computer Engineering, University of Canterbury, Christchurch, NZ
Lab Chip 7:1475-8. 2007
A microfluidic passive pumping method relying on surface tension properties is investigated and a physical model is developed...
- New protocols for preparing dipalmitoylphosphatidylcholine dispersions and controlling surface tension and competitive adsorption with albumin at the air/aqueous interface
Sook Heun Kim
School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, IN 47907 2100, USA
Colloids Surf B Biointerfaces 43:256-66. 2005
..with Trurnit's method or when dispersion drops are sprayed onto the surface of a DPPC/BSA mixture, the surface tension becomes lower and is controlled by DPPC, which can prevent the adsorption of BSA...
- Design of peptidyl compounds that affect beta-amyloid aggregation: importance of surface tension and context
Todd J Gibson
Department of Chemical and Biological Engineering, University of Wisconsin, 1415 Engineering Drive, Madison, Wisconsin 53706, USA
Biochemistry 44:8898-907. 2005
..In all cases, the hybrid compound's ability to increase solvent surface tension was the strongest predictor of its effect on Abeta aggregation kinetics...
- Alpha5beta1 integrin mediates strong tissue cohesion
Elizabeth E Robinson
Department of Surgery, University of Medicine and Dentistry Robert Wood Johnson Medical School, CAB Room 7070, New Brunswick, NJ 08648, USA
J Cell Sci 116:377-86. 2003
..Collectively, these data confirm our hypothesis that alpha5beta1 integrin acts through fibronectin to link adjacent cells together, thus promoting strong intercellular cohesion in 3D cellular aggregates...
- Control of surface tension at liquid-liquid interfaces using nanoparticles and nanoparticle-protein complexes
Department of Chemistry, University of Massachusetts at Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, USA
Langmuir 28:2023-7. 2012
..Using dynamic surface tension measurements, we observed a linear decrease in the meso-equilibrium surface tension (γ) and faster dynamics ..
- Saponins can perturb biologic membranes and reduce the surface tension of aqueous solutions: a correlation?
Institut fur Pharmazie, Pharmazeutische Biologie, Freie Universitat Berlin, Konigin Luise Str 2 4, 14195 Berlin, Germany
Bioorg Med Chem 20:2822-8. 2012
..The surfactant behavior lets them lower the surface tension in aqueous solutions and form micelles when reaching the critical micelle concentration (cmc)...
- Colloid transport with wetting fronts: interactive effects of solution surface tension and ionic strength
Institute for a Secure and Sustainable Environment, Department of Biosystems Engineering and Soil Science, The University of Tennessee, Knoxville, TN 37996 4134, USA
Water Res 44:1270-8. 2010
..The saturated transport experiments demonstrated that decreasing solution surface tension and ionic strength decreased colloid deposition at the solid-liquid interface and increased colloid recovery ..
- Surface tension-mediated, concave-microwell arrays for large-scale, simultaneous production of homogeneously sized embryoid bodies
Gi Seok Jeong
Department of Biomedical Engineering, College of Health Science, Korea University, Seoul, Korea
Adv Healthc Mater 2:119-25. 2013
..The large number of concave well structures is self-constructed through the surface tension of the viscoelastic PDMS prepolymer...
- Surface tension propulsion of fungal spores
Laboratoire de Physique de la Matiere Condensee, CNRS UMR 6622, Universite de Nice Sophia Antipolis, Parc Valrose, 06108 Nice, Cedex 2, France
J Exp Biol 212:2835-43. 2009
..The fusion of the droplet onto the spore creates a momentum that propels the spore forward. The use of surface tension for spore ejection offers a new paradigm to perform work at small length scales...
- Solubilization behavior of poorly soluble drugs with combined use of Gelucire 44/14 and cosolvent
Developmental Research Laboratories, Shionogi and Co, Ltd, 12 4 Sagisu 5 chome, Fukushima ku, Osaka 553 0002, Japan
J Pharm Sci 93:1471-9. 2004
..Gelucire was confirmed to form micelles by surface tension and fluorescence measurements both in water and water/cosolvent mixtures...
- Surface tension influences cell shape and phagocytosis in alveolar macrophages
Cincinnati Children s Hospital, Division of Pulmonary Biology, University of Cincinnati, OH 45229 3039, USA
Am J Physiol Lung Cell Mol Physiol 291:L572-9. 2006
The effect of surface tension on alveolar macrophage shape and phagocytosis was assessed in vivo and in vitro. Surface tension was regulated in vivo by conditionally expressing surfactant protein (SP)-B in Sftpb-/- mice...
- The role of the gel <=> liquid-crystalline phase transition in the lung surfactant cycle
, , , , Brazil
Biophys Chem 89:243-51. 2001
..Based on these results, an explanation on how fluid aggregates in the alveolar subphase can form a rigid monolayer at the alveolar interface is proposed...
- Molecular dynamics simulations of the surface tension and structure of salt solutions and clusters
Department of Theoretical Chemistry and Biology, School of Biotechnology, Royal Institute of Technology, S 10691 Stockholm, Sweden
J Phys Chem B 116:3198-204. 2012
..Interfacial properties, including surface tension and halide anion distributions, are crucial issues in the study of the aerosols...
- Surface tension comparison of four common root canal irrigants and two new irrigants containing antibiotic
Department of Periodontology, Dental, School, University of Brescia, Italy
J Endod 32:1091-3. 2006
The aim of this study is to compare the surface tension of four common endodontic irrigants: Moltendo EDTA 17%, Cetrexidin, Smear Clear, Sodium hypochlorite 5.25%, with the surface tension of MTAD and Tetraclean...
- The late asthmatic response is linked with increased surface tension and reduced surfactant protein B in mice
Pulmonary, Allergy and Critical Care Division, Department of Medicine, University of Pennsylvania Medical School, Philadelphia 19104, USA
Am J Physiol Lung Cell Mol Physiol 283:L755-65. 2002
..reductions in surfactant protein (SP)-B, a hydrophobic surfactant protein responsible for maintaining low surface tension of the lining fluid of distal air spaces...
- Fine tuning of tissues' viscosity and surface tension through contractility suggests a new role for α-catenin
Tomita Vasilica Stirbat
Institut Lumière Matière, UMR5306 Université Lyon 1 CNRS, Universite de Lyon, Villeurbanne, Lyon, France
PLoS ONE 8:e52554. 2013
..time ago an analogy between liquids and tissues and showed that indeed tissues possess a measurable tissue surface tension and viscosity...
- Component-specific surface and physiological activity in bovine-derived lung surfactants
Robert H Notter
Department of Pediatrics Neonatology, Box 777, University of Rochester School of Medicine, 601 Elmwood Avenue, Rochester, NY 14642, USA
Chem Phys Lipids 114:21-34. 2002
..Survanta had lower adsorption, higher minimum surface tension, and a smaller effect on surfactant-deficient P-V mechanics consistent with minimal contributions from SP-B...
- Lung surfactant protein SP-B promotes formation of bilayer reservoirs from monolayer and lipid transfer between the interface and subphase
Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada
Biophys J 100:1678-87. 2011
..On interface expansion, the flow of lipids to the monolayer restored the surface tension to the equilibrium spreading value...
- Folding of lipid monolayers containing lung surfactant proteins SP-B(1-25) and SP-C studied via coarse-grained molecular dynamics simulations
Susan L Duncan
Dept of Chemical Engineering, University of Michigan, 2300 Hayward St, 3074 H H Dow Building, Ann Arbor, Michigan 48109, USA
Biochim Biophys Acta 1798:1632-50. 2010
..In addition to promoting fold formation, the peptides also display fusogenic behavior, which can lead to surface refining...
- Fusion of vesicles with the air-water interface: the influence of polar head group, salt concentration, and vesicle size
Departamento de Bioquimica, Instituto de Quimica, Universidade de Sao Paulo, Av Prof Lineu Prestes 748, 05508 940, Sao Paulo, Brazil
Biochim Biophys Acta 1463:301-6. 2000
..For the zwitterionic vesicles, plots of the initial surface pressure increase rate (surface tension decrease rate) as a function of temperature show a peak at the phase transition temperature (T(m)) of the ..
- Characterisation of the interaction of lactate dehydrogenase with Tween-20 using isothermal titration calorimetry, interfacial rheometry and surface tension measurements
William J McAuley
The School of Pharmacy, The Queen s University of Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
J Pharm Sci 98:2659-69. 2009
..of the protein and surfactant on the interfacial properties were followed with interfacial rheology and surface tension measurements in order to understand the mechanism by which the surfactant prevents protein adsorption to the ..
- Aggregation behavior of sodium dioctylsulfosuccinate in aqueous ethylene glycol medium. A case of hydrogen bonding between surfactant and solvent and its manifestation in the surface tension isotherm
Department of Chemistry, North Eastern Hill University, Shillong, India
Langmuir 28:15762-9. 2012
..present study cmc of AOT in water + EG medium in the range from 0 to 100% (by weight) EG is measured by using surface tension and fluorescence emission methods...
- Relating cell and tissue mechanics: implications and applications
Department of Physics and Astronomy, University of Missouri, Columbia, Missouri 65211, USA
Dev Dyn 237:2438-49. 2008
..A manifestation of differential adhesion is tissue liquidity and a measure for it is tissue surface tension. In terms of this property, DAH correctly predicts global developmental tissue patterns...
- Surface tension phenomena in the xylem sap of three diffuse porous temperate tree species
Karen K Christensen-Dalsgaard
Department of Renewable Resources, 4 44 ESB, University of Alberta, Edmonton, Alberta T6G2E3, Canada
Tree Physiol 31:361-8. 2011
..physiology models involving bubble nucleation, expansion or elimination, it is typically assumed that the surface tension of xylem sap is equal to that of pure water, though this has never been tested...
- The interfacial tension of the lipid membrane formed from lipid-cholesterol and lipid-lipid systems
Aneta D Petelska
Institute of Chemistry, University of Bialystok, Al J Pilsudskiego 11 4, 15 443 Bialystok, Poland
Cell Biochem Biophys 44:205-11. 2006
- Acid-base equilibria at interface separating electrolyte solution and lipid bilayer formed from phosphatidylcholine
Aneta D Petelska
Laboratory of Interfacial Electrochemistry, Faculty of Chemistry, University of Warsaw, Pasteur St 1, 02 093 Warsaw, Poland
Biophys Chem 104:13-9. 2003
..We take suitable equations to describe the dependence of interfacial tension of a lipid bilayer membrane on H(+) and OH(-) ion concentrations. A theoretical equation is derived to describe this dependence in the whole pH range...
- Interfacial tension of the lipid membrane formed from lipid-fatty acid and lipid-amine systems
Aneta D Petelska
Institute of Chemistry, University of Bialystok, Al J Pilsudskiego 11 4, 15 443 Bialystok, Poland
Bioelectrochemistry 70:28-32. 2007
- Non-cooperative effects of lung surfactant proteins on early adsorption to an air/water interface
Department of Biochemistry and Molecular Biology, Oregon Health and Science University, Portland, OR 97239 3098, USA
Biochim Biophys Acta 1616:165-73. 2003
..kinetics to an air/water interface were monitored at different temperatures using a Wilhelmy plate to measure surface tension. When plotted versus protein concentration, the adsorption rates during the initial change in surface tension ..
- Inactivation of pulmonary surfactant due to serum-inhibited adsorption and reversal by hydrophilic polymers: experimental
H William Taeusch
Pediatrics, University of California, San Francisco, California 94110, USA
Biophys J 89:1769-79. 2005
- Test of the Epstein-Plesset model for gas microparticle dissolution in aqueous media: effect of surface tension and gas undersaturation in solution
P Brent Duncan
Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708 0300, USA
Langmuir 20:2567-78. 2004
..by two main factors: the concentration (undersaturation) of dissolved gas in the aqueous solution and the surface tension of the gas bubble-water interface via a Laplace overpressure in the bubble that this creates...
- In situ biosurfactant production by Bacillus strains injected into a limestone petroleum reservoir
Department of Botany and Microbiology, University of Oklahoma, Norman, OK 73019, USA
Appl Environ Microbiol 73:1239-47. 2007
..02 +/- 0.001 h(-1)), and biosurfactant yields (0.015 +/- 0.001 mol biosurfactant/mol glucose). The data demonstrate the technical feasibility of microbial processes for oil recovery...
- The differential adhesion hypothesis: a direct evaluation
Ramsey A Foty
Department of Surgery, UMDNJ Robert Wood Johnson Medical School, New Brunswick, NJ 08903, USA
Dev Biol 278:255-63. 2005
..of liquid-like cell aggregate surface tensions have shown that, without exception, a cell aggregate of lower surface tension tends to envelop one of higher surface tension to which it adheres...
- Intrinsic contact angle of aqueous phases at membranes and vesicles
Theory and Bio Systems, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
Phys Rev Lett 103:238103. 2009
..A detailed comparison between theory and experiment provides strong evidence that the intrinsic contact angle theta(in) represents a material parameter, in contrast to the effective contact angles...
- Metastability of a supercompressed fluid monolayer
Ethan C Smith
Departments of Biochemistry, Oregon Health and Science University, Portland, Oregon 97239 3098, USA
Biophys J 85:3048-57. 2003
..These observations indicate that in several respects, the supercompression of POPC monolayers resembles the supercooling of three-dimensional liquids toward a glass transition...
- Effect of plasticizer on the dynamic surface tension and the free volume of Eudragit systems
Institute of Pharmacy Administration, University of Pharmacy, Semmelweis University, Hogyes E Street 7 9, H 1092 Budapest, Hungary
Int J Pharm 244:81-6. 2002
The purpose of the present study was to determine the changes of dynamic surface tension of aqueous Eudragit dispersions quantitatively and compare these data with the free volume of the free films formed from several dispersions of ..
- Insertion of tear proteins into a meibomian lipids film
R and D Sifi S p A via E Patti, 36 95020 Aci S Antonio CT, Italy
Colloids Surf B Biointerfaces 44:49-55. 2005
..meibomian lipid composition is therefore functional to maintain tear proteins activity...
- Hofmeister salt effects on surface tension arise from partitioning of anions and cations between bulk water and the air-water interface
Laurel M Pegram
Department of Chemistry, University of Wisconsin Madison, Madison, Wisconsin 53706, USA
J Phys Chem B 111:5411-7. 2007
..surface-bulk partitioning model to interpret the effects of individual Hofmeister cations and anions on the surface tension of water...
- Dynamic surface tension and adsorption mechanisms of surfactants at the air-water interface
University of Bristol, School of Chemistry, Cantock s Close, UK
Adv Colloid Interface Sci 85:103-44. 2000
..Finally, the first reported measurements of the dynamic surface excess Gamma(t), using the overflowing cylinder in conjunction with neutron reflection, are described...
- Correlation between thermal aggregation and stability of lysozyme with salts described by molar surface tension increment: an exceptional propensity of ammonium salts as aggregation suppressor
Institute of Applied Physics, University of Tsukuba, 1 1 1 Tennodai, Tsukuba, Ibaraki, 305 8573, Japan
Protein J 26:423-33. 2007
..The positive relation between aggregation rate and T (m) was described by another factor such as the surface tension of salt solutions...
- Dependence of lung injury on surface tension during low-volume ventilation in normal open-chest rabbits
Istituto di Fisiologia Umana I, Universita di Milano, Milan, Italy
J Appl Physiol (1985) 102:174-82. 2007
- Phospholipase A2 is present in meconium and inhibits the activity of pulmonary surfactant: an in vitro study
A J Schrama
Department of Pediatrics, Leiden University Medical Center, The Netherlands
Acta Paediatr 90:412-6. 2001
..Also, their effect on the surface tension of surfactant (Curosurf) was measured using a pulsating bubble surfactometer (PBS)...
- Interface properties of simplified tear-like fluids in relation to lipid and aqueous layers composition
SIFI S p A Lavinaio CT, Italy
Adv Exp Med Biol 506:405-17. 2002
..We may also couple different techniques such as measuring elastic and rheological properties of the films that may be relevant to its physiological behaviour...
- Critical exponents for line tension and dipole density difference from lipid monolayer domain boundary fluctuations
Michael C Heinrich
Department of Chemistry, Institute for Medicine and Engineering, and Laboratory for Research on the Structure of Matter, University of Pennsylvania, 231 South 34th Street, Philadelphia, PA 19104, USA
J Phys Chem B 112:8063-8. 2008
..Additionally, photobleaching effects and domain size influence were quantified and found to be small in our system. We suggest that the method of flicker spectroscopy can be helpful in identifying line-active compounds...
- Hybrid lipids as a biological surface-active component
Weizmann Institute of Science, Department of Materials and Interfaces, Rehovot, Israel
Biophys J 97:1087-94. 2009
..In this limit, finite-sized domains stabilized by the packing of these hybrid lipids can form as equilibrium structures...
- Axisymmetric drop shape analysis for estimating the surface tension of cell aggregates by centrifugation
Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario, Canada
Biophys J 96:1606-16. 2009
Biological tissues behave in certain respects like liquids. Consequently, the surface tension concept can be used to explain aspects of the in vitro and in vivo behavior of multicellular aggregates...
- Spontaneous, oscillatory liquid transport in surface tension-confined microfluidics
Shih Hui Chao
Center for Ecogenomics, The Biodesign Institute, Arizona State University, Tempe, Arizona 85287, USA
Lab Chip 9:867-9. 2009
..A unique, spontaneous, oscillatory flow phenomenon driven by the Marangoni effect on a heterogeneous surface can be used for passive microfluidic pumping...
- On the role of surface tension in the pathophysiology of emphysema
Edward P Ingenito
Division of Pulmonary and Critical Care Medicine, Brigham and Women s Hospital, 75 Francis Street, Boston, MA 02115, USA
Am J Respir Crit Care Med 171:300-4. 2005
- Surface properties of sulfur- and ether-linked phosphonolipids with and without purified hydrophobic lung surfactant proteins
Department of Pediatrics, University of Rochester, 601 Elmwood Avenue, Rochester, NY 14642, USA
Chem Phys Lipids 137:77-93. 2005
..The high activity and inhibition resistance of synthetic surfactants containing DEPN-8 or SO(2)-lipid plus SP-B/SP-C are promising for future applications in treating surfactant dysfunction in inflammatory lung injury...
- Surface tension in tears
J M Tiffany
Arch Soc Esp Oftalmol 81:363-6. 2006
- Dynamic surface tension behavior in a photoresponsive surfactant system
Bradley A Cicciarelli
Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
Langmuir 23:4753-64. 2007
..illumination conditions (dark, UV light, visible light), freshly formed surfaces exhibit profoundly different surface tension trajectories as they approach essentially identical equilibrium states...
- Synthesis and surface activity of diether-linked phosphoglycerols: potential applications for exogenous lung surfactants
Robert H Notter
Department of Pediatrics, University of Rochester, Rochester, NY 14642, USA
Bioorg Med Chem Lett 17:113-7. 2007
..The surface tension-lowering capabilities of synthetic lung surfactant mixtures containing the PG analogs were measured on the ..
- Mapping and analysis of the lytic and fusogenic domains of surfactant protein B
Marnie A Ryan
Division of Pulmonary Biology, Cincinnati Children s Hospital Medical Center and University of Cincinnati College of Medicine, Cincinnati, Ohio 45229, USA
Biochemistry 44:861-72. 2005
..The requirements for optimal surface tension reduction were similar to those for fusion; in contrast, helix 1 (residues 7-22) alone was sufficient for ..
- Testing the role of solvent surface tension in protein ionization by electrospray
Institute of Organic Chemistry, Johannes Kepler University, Altenbergerstrasse 69, A 4040 Linz, Austria
J Mass Spectrom 40:503-10. 2005
This work was aimed at probing the influence of solvent surface tension on protein ionization by electrospray...
- The "wisdom" of lung surfactant: balancing host defense and surface tension-reducing functions
Jo Rae Wright
Box 3709, Dept of Cell Biology, Duke Univ Medical Center, Durham, NC 27710, USA
Am J Physiol Lung Cell Mol Physiol 291:L847-50. 2006
- Single molecular anatomy of solvophobic effects in host-guest interactions based on surface tension using atomic force microscopy
Institute of Applied Physics, 21st Century COE, CREST JST, University of Tsukuba, Tsukuba, Ibaraki 305 8573, Japan
Phys Rev Lett 96:228303. 2006
The effectiveness of the mechanism of surface tension to analyze the host-guest interaction was demonstrated by measuring the unbinding force of the beta-Cyclodextrin (CyD)--adamantane molecules in a liquid environment at the single-..
- Domains of surfactant protein A that affect protein oligomerization, lipid structure and surface tension
MRC Immunochemistry Unit, Department of Biochemistry, University of Oxford, South Parks Road, OX1 3QU, Oxford, UK
Comp Biochem Physiol A Mol Integr Physiol 129:109-27. 2001
..In recent work, we have determined that the maintenance of low surface tension of surfactant in the presence of serum protein inhibitors requires cooperative interactions between the C-..
- Polymyxin B/pulmonary surfactant mixtures have increased resistance to inactivation by meconium and reduce growth of gram-negative bacteria in vitro
Department of Clinical Chemistry, Laboratory for Surfactant Research, Karolinska Hospital, Sweden
Pediatr Res 59:407-11. 2006
..Curosurf plus CaCl2/PxB needed a 4-fold increase of meconium concentration to increase dynamic surface tension significantly compared with Curosurf plus CaCl2 alone, indicating that PxB further increases the resistance ..
- Morphological alterations of exogenous surfactant inhibited by meconium can be prevented by dextran
Institute of Anatomy, Experimental Morphology, University of Bern, Baltzerstrasse 2, CH 3012 Bern, Switzerland
Respir Res 7:86. 2006
..Morphological surfactant analysis by transmission electron microscopy (TEM) and stereology allows the differentiation of active (large aggregates = LA) and inactive (small aggregates = SA) subtypes...
- Simple model for prediction of surface tension of mixed surfactant solutions
V B Fainerman
International Medical Physicochemical Centre, Donetsk Medical University, Donetsk, Ukraine
Adv Colloid Interface Sci 96:339-59. 2002
..The agreement between experimental data and the theoretical calculations is excellent. This approach can be especially important for practical applications of surfactant mixtures for which experimental data are scarce...
- On simulating lipid bilayers with an applied surface tension: periodic boundary conditions and undulations
S E Feller
Biophysics Laboratory, Food and Drug Administration, Rockville, Maryland 20852 1448, USA
Biophys J 71:1350-5. 1996
..Such fluctuations are intrinsically connected to the value of the macroscopic (or thermodynamic) surface tension (cf. Eqs. 1 and 9; for a related treatment, see Brochard et al., 1975, 1976)...
- Bronchoscopic administration of bovine natural surfactant in ARDS and septic shock: impact on biophysical and biochemical surfactant properties
Dept of Internal Medicine II, Justus Liebig University, Giessen, Germany
Eur Respir J 19:797-804. 2002
..Both minimum (gammamin) and adsorption (gammaads) surface tension values (pulsating bubble surfactometer) were dramatically increased...
- In situ synthesis of oligonucleotide arrays by using surface tension
J H Butler
GenePharm Inc, 136 South Wolfe Road, Sunnyvale, CA 94086, USA
J Am Chem Soc 123:8887-94. 2001
..These arrays are composed of features defined and separated by differential surface tension (surface tension arrays)...
- Effects of surface tension and viscosity on airway reopening
D P Gaver
Section of Pulmonary and Critical Care Medicine, University of Chicago, Illinois 60637
J Appl Physiol (1985) 69:74-85. 1990
..Using dimensional analysis, we found that the relative importance of viscous and surface tension forces depends on the capillary number (Ca = microU/gamma)...
- Rapid method for measurement of surface tension in multiwell plates
Matthew G Cottingham
Sir William Dunn School of Pathology, University of Oxford, South Parks Road, Oxford OX1 3RE, UK
Lab Invest 84:523-9. 2004
We describe an optical method for quantifying surface tension in 96-well microtitre plates...
- Cardiac looping in experimental conditions: effects of extraembryonic forces
Dmitry A Voronov
Department of Biomedical Engineering, Washington University, St Louis, Missouri 63130, USA
Dev Dyn 224:413-21. 2002
..Such preparations, however, expose the embryo and the heart to surface tension that is not present in ovo...
- In vivo determination of surface tension in the horse trachea and in vitro model studies
V Im Hof
Department of Internal Medicine, University Hospital, Inselspital, Berne, Switzerland
Respir Physiol 109:81-93. 1997
We measured the surface tension in the trachea of the non-anaesthetised horse from the spreading behaviour of fluid drops, using videotracheoscopy...
- Mechanical ventilation of isolated rat lungs changes the structure and biophysical properties of surfactant
Ruud A W Veldhuizen
Lawson Health Research Institute and Department of Physiology, University of Western Ontario, London, Ontario, Canada N6A 4V2
J Appl Physiol (1985) 92:1169-75. 2002
..of the biophysical properties by using a captive bubble surfactometer demonstrated that adsorption and surface tension reduction were significantly impaired with LA from the injuriously ventilated lungs...
- Surfactant in the middle ear and eustachian tube: a review
John F McGuire
School of Medicine, Georgetown University, 2908 B O Street NW, Washington, DC 20007, USA
Int J Pediatr Otorhinolaryngol 66:1-15. 2002
..four platforms of research: the role of surfactant in the innate immune system, the effect of surfactant on surface tension and Eustachian tube opening pressure, the capacity of surfactant to alter the rheological properties of mucus ..
- Constant-pressure and constant-surface tension simulations in dissipative particle dynamics
Ask F Jakobsen
MEMPHYS Center for Biomembrane Physics, Physics Department, University of Southern Denmark, Campusvej 55, DK 5230 Odense M, Denmark
J Chem Phys 122:124901. 2005
We present a method for constant-pressure and constant-surface tension simulations in dissipative particle dynamics using a Langevin piston approach...
- Adsorption of frog foam nest proteins at the air-water interface
Department of Chemistry, University of Glasgow, Glasgow G12 8QQ, Scotland, UK
Biophys J 88:2114-25. 2005
..ranaspumins) from the foam nests of the tropical frog Physalaemus pustulosus have been investigated by surface tension, two-photon excitation fluorescence microscopy, specular neutron reflection, and related biophysical ..
- Temperature dependence of blood surface tension
Department of Medical Biophysics and Medical Informatics, Third Medical Faculty, Charles University, Prague, Czech Republic
Physiol Res 56:S93-8. 2007
Whole blood surface tension of 15 healthy subjects recorded by the ring method was investigated in the temperature range from 20 to 40 degrees C...
- Surface tension controls capsule thickness and collagen orientation in glaucoma shunt devices
O A Kadri
Department of Biology, U.S. Air Force Academy, CO 80840, USA
Biomed Sci Instrum 37:257-62. 2001
..Previous studies suggested that fibers orient along the principal stress lines--surface tension on the capsule directs collagen growth in order to strengthen the stretched membrane...
- Surface pressure measurements of human tears and individual tear film components indicate that proteins are major contributors to the surface pressure
Sophia T Tragoulias
Cooperative Research Centre for Eye Research and Technology, University of New South Wales, Sydney, Australia
Cornea 24:189-200. 2005
Tear film stability has been associated with a low surface tension (high surface pressure), which has been attributed to a variety of tear film components...
- Particle-induced indentation of the alveolar epithelium caused by surface tension forces
S M Mijailovich
Molecular and Integrative Physiological Sciences, Dept of Environmental Health, Harvard School of Public Health, 665 Huntington Ave, Bldg I, Rm 1010D, Boston, MA 02115, USA
J Appl Physiol (1985) 109:1179-94. 2010
..operating in the particle-tissue interaction phenomena can be explained on the basis of a balance between surface tension force and tissue resistance force; the former tend to move a particle toward alveolar epithelial cell surface,..
- Surfactant alterations in severe pneumonia, acute respiratory distress syndrome, and cardiogenic lung edema
Department of Internal Medicine, Justus Liebig University, Giessen, Germany
Am J Respir Crit Care Med 153:176-84. 1996
..We conclude that pronounced surfactant abnormalities, comparable to those in ARDS in the absence of lung infection, occur in different entities of severe PNEU, but not in CLE...
- Bilirubin influence on oxidative lung damage and surfactant surface tension properties
Section of Neonatology, Department of Surgical and Medical Critical Care, University of Florence, Florence, Italy
Pediatr Pulmonol 38:179-85. 2004
..that hyperbilirubinemia might reduce in vivo oxidative lung damage while also diminishing lung surfactant surface tension properties during acute lung injury, we performed a randomized study in a rabbit model of acute lung injury...
- Thermodynamic effects of the hydrophobic surfactant proteins on the early adsorption of pulmonary surfactant
Departments of Biochemistry and Molecular Biology, Medicine, and Physiology and Pharmacology, Oregon Health and Science University, Portland, Oregon 97201-3098, USA
Biophys J 81:1536-46. 2001
..We compared the temperature and concentration dependence of adsorption, measured by monitoring surface tension, between calf lung surfactant extract (CLSE) and the complete set of neutral and phospholipids (N&PL) ..
- Evidence for periciliary liquid layer depletion, not abnormal ion composition, in the pathogenesis of cystic fibrosis airways disease
Cystic Fibrosis Pulmonary Research and Treatment Center, The University of North Carolina at Chapel Hill, 27599 7248, USA
Cell 95:1005-15. 1998
..These data indicate that therapy for CF lung disease should not be directed at modulation of ionic composition, but rather at restoring volume (salt and water) on airway surfaces...
- Pulmonary surfactant in birds: coping with surface tension in a tubular lung
Departments of Pediatric Pulmonology and Neonatology, Hannover Medical School, 30625 Hannover, Germany
Am J Physiol Regul Integr Comp Physiol 281:R327-37. 2001
..with pig surfactant, both bird surfactants were enriched in dipalmitoylphosphatidylcholine, the principle surface tension-lowering agent in surfactant, and depleted in palmitoylmyristoylphosphatidylcholine, the other disaturated ..
- The effect of dextran to restore the activity of pulmonary surfactant inhibited by albumin
J J Lu
Department of Mechanical and Industrial Engineering, University of Toronto, 5 King s College Road, Toronto, Ont, Canada M5S 3G8
Respir Physiol Neurobiol 130:169-79. 2002
..It was found that dextran could effectively restore surface tension properties of the inhibited surfactant in vitro...
- Dextran restores albumin-inhibited surface activity of pulmonary surfactant extract
Department of Anesthesiology and Intensive Care Medicine, School of Medicine, Kanazawa University, Kanazawa 920 8641, Japan
J Appl Physiol (1985) 86:1778-84. 1999
..01). The minimum surface tension of 2...
- Surfactant subtype conversion is related to loss of surfactant apoprotein B and surface activity in large surfactant aggregates. Experimental and clinical studies
Departments of Internal Medicine and Anatomy, Justus Liebig University Giessen, Giessen, Germany
Am J Respir Crit Care Med 159:244-51. 1999
..of LA to SA was accompanied by a marked decline in the ability of the remaining LA fraction to reduce surface tension by adsorption and during film compression on a pulsating bubble surfactometer...
- Box-Behnken experimental design in the development of a nasal drug delivery system of model drug hydroxyurea: characterization of viscosity, in vitro drug release, droplet size, and dynamic surface tension
Division of Pharmaceutics, College of Pharmacy and Pharmaceutical Sciences, Florida A and M University, Tallahassee, FL 32307, USA
AAPS PharmSciTech 6:E573-85. 2005
..The rheology and dynamic surface tension (DST) of the test formulations was investigated using LV-DV-III Brookfield rheometer and T60 SITA tensiometer,..
- Nonionic polymers reverse inactivation of surfactant by meconium and other substances
H William Taeusch
Departments of Pediatrics and Physiology, Cardiovascular Research Institute, University of California San Francisco, San Francisco, California, USA
Am J Respir Crit Care Med 159:1391-5. 1999
A variety of substances including human meconium have been found to affect adversely the surface tension-lowering activity of pulmonary surfactants, and this effect may be important in the pathogenesis of a number of human diseases...
- Effect of interactions between the adsorbed species on the properties of single and mixed-surfactant monolayers at the air/water interface
Stoyan I Karakashev
Faculty of Chemistry, St Kliment Ohridski University of Sofia, Sofia, 1126, Bulgaria
J Colloid Interface Sci 248:477-86. 2002
Experimental data on surface tension available from the literature and generated in the present study are analyzed to estimate the applicability of adsorption models, based on the Frumkin equation, to nonionic and ionic surfactants and ..
- The influence of subphase temperature on miltefosine-cholesterol mixed monolayers
Department of Physical Chemistry, Faculty of Pharmacy, Campus Sur, 15706 Santiago de Compostela, Spain
J Colloid Interface Sci 301:258-66. 2006
..Such "surface complexes" should be responsible for the contraction of the mean molecular area and thus the high stability of the mixed monolayer...
- Substrate and surfactant effects on the glass-liquid transition of thin water films
Nanoscale Materials Center, National Institute for Materials Science, 1 1 Namiki, Tsukuba, Ibaraki 305 0044, Japan
J Phys Chem B 110:17524-30. 2006
..This is because the morphology of supercooled liquid water is changed by the surface tension, and it is quenched by termination of the free OH groups on the surface...