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190 results
  • Characteristics of phospholipid vesicles enhanced by adhesion on an annular region. [Journal Article]
    Phys Rev E 2019; 99(5-1):052416Majhenc J, Božič B
  • Phospholipid vesicle membranes are simple models used to study the mechanical properties of cell membranes. The shapes of flaccid vesicles can exhibit very diverse forms. When researching very flaccid vesicles, axisymmetrical vesicles with the membranes adhered to an annular region can also be observed. A phase diagram of such shapes was studied for different values of the vesicle parameters, i.e…
  • A coarse-grained red blood cell membrane model to study stomatocyte-discocyte-echinocyte morphologies. [Journal Article]
    PLoS One 2019; 14(4):e0215447Geekiyanage NM, Balanant MA, … Gu Y
  • An improved red blood cell (RBC) membrane model is developed based on the bilayer coupling model (BCM) to accurately predict the complete sequence of stomatocyte-discocyte-echinocyte (SDE) transformation of a RBC. The coarse-grained (CG)-RBC membrane model is proposed to predict the minimum energy configuration of the RBC from the competition between lipid-bilayer bending resistance and cytoskele…
  • Image-Based Flow Cytometry and Angle-Resolved Light Scattering to Define the Sickling Process. [Journal Article]
    Cytometry A 2019; 95(5):488-498Goktas P, Sukharevsky IO, … Altintas A
  • Red blood cells (RBCs) from sickle cell patients exposed to a low oxygen tension reveal highly heterogeneous cell morphologies due to the polymerization of sickle hemoglobin (HbS). We show that angle-resolved light scattering approach with the use of image-based flow cytometry provides reliable quantitative data to define the change in morphology of large populations of RBCs from sickle cell pati…
  • Quantification of stored red blood cell fluctuations by time-lapse holographic cell imaging. [Journal Article]
    Biomed Opt Express 2018; 9(10):4714-4729Jaferzadeh K, Moon I, … Marquet P
  • We propose methods to quantitatively calculate the fluctuation rate of red blood cells with nanometric axial and millisecond temporal sensitivity at the single-cell level by using time-lapse holographic cell imaging. For this quantitative analysis, cell membrane fluctuations (CMFs) were measured for RBCs stored at different storage times. Measurements were taken over the whole membrane for both t…
  • Morphology of depletant-induced erythrocyte aggregates. [Journal Article]
    Soft Matter 2018; 14(40):8160-8171Nehring A, Shendruk TN, de Haan HW
  • Red blood cells suspended in quiescent plasma tend to aggregate into multicellular assemblages, including linearly stacked columnar rouleaux, which can reversibly form more complex clusters or branching networks. While these aggregates play an essential role in establishing hemorheological and pathological properties, the biophysics behind their self-assembly into dynamic mesoscopic structures re…
  • Erythrocyte Membrane Failure by Electromechanical Stress. [Journal Article]
    Appl Sci (Basel) 2018; 8(2)Du E, Qiang Y, Liu J
  • We envision that electrodeformation of biological cells through dielectrophoresis as a new technique to elucidate the mechanistic details underlying membrane failure by electrical and mechanical stresses. Here we demonstrate the full control of cellular uniaxial deformation and tensile recovery in biological cells via amplitude-modified electric field at radio frequency by an interdigitated elect…
  • Monitoring dynamic spiculation in red blood cells with scanning ion conductance microscopy. [Journal Article]
    Analyst 2018; 143(5):1087-1093Zhu C, Shi W, … Baker LA
  • Phospholipids are critical structural components of the membrane of human erythrocytes and their asymmetric transbilayer distribution is essential for normal cell functions. Phospholipid asymmetry is maintained by transporters that shuttle phospholipids between the inner leaflet and the outer leaflet of the membrane bilayer. When an exogenous, short acyl chain, phosphatidylcholine (PC) or phospha…
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