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The equilibrium distance between two lipid bilayers stable in bulk water and in proximity of a substrate was investigated. Samples consisted of a homogeneous lipid bilayer, floating near an identical bilayer deposited on the hydrophilic…

Soft Condensed Matter · Physics 2007-05-23 Giovanna Fragneto , Thierry Charitat , Edith Bellet-Amalric , Robert Cubitt , Francois Graner

Lipid structures exhibit complex and highly dynamic lateral structure; and changes in lipid density and fluidity are believed to play an essential role in membrane targeting and function. The dynamic structure of liquids on the molecular…

Soft Condensed Matter · Physics 2016-12-21 Neda Dadashvand , Christina M. Othon

Lipolysis is a life-essential metabolic process, which supplies fatty acids stored in lipid droplets to the body in order to match the demands of building new cells and providing cellular energy. In this paper, we present a first…

Analysis of PDEs · Mathematics 2026-03-26 Reymart Salcedo-Lagunero , Klemens Fellner , Thomas Apel , Volker Kempf , Philipp Zilk

We present a dynamical model of lipoprotein metabolism derived by combining a cascading process in the blood stream and cellular level regulatory dynamics. We analyse the existence and stability of equilibria and show that this…

Quantitative Methods · Quantitative Biology 2007-05-23 Elias August , Kim H. Parker , Mauricio Barahona

We have conducted a pilot clinical study to not only investigate the THz spectra of ex-vivo fresh human whole blood of 28 patients following 8-hours fasting guideline, but also to find out the critical blood ingredients of which the…

Biological Physics · Physics 2015-06-23 Tzu-Fang Tseng , Borwen You , Hao-Cheng Gao , Tzung-Dau Wang , Chi-Kuang Sun

The Raman spectrum of microscopic droplets of lipid material on the lumen of the aorta of an apolipoprotein E knock-out mouse were reported in the proceedings of an SPIE conference. Based on the absence of the carbonyl band in the spectrum,…

Tissues and Organs · Quantitative Biology 2008-06-13 Fran Adar

In the mimetic membrane system of phosphatidylcholine bilayers, thickening (pre-critical behavior, anomalous swelling) of the bilayers is observed, in the vicinity of the main transition, which is non-linear with temperature. The sterols…

Soft Condensed Matter · Physics 2009-10-31 F. Richter , L. Finegold , G. Rapp

The Glycemic Index (GI) is a tool for classifying carbohydrates based on their impact on postprandial glycemia, useful for diabetes prevention and management. This study applies a mathematical model for a data driven simulation of the…

Dynamical Systems · Mathematics 2026-04-02 Fabio Credali , Maria Teresa Venuti , Daniele Boffi , Paola Rossi

Managing blood lipid levels is important for the treatment and prevention of diabetes, cardiovascular disease, and obesity. An easy-to-use, portable lipid blood test will accelerate more frequent testing by patients and at-risk populations.…

Quantitative Methods · Quantitative Biology 2018-04-23 Kyongsik Yun , Juhee Lee , Jaekyu Choi , In-Uk Song , Yong-An Chung

Atomistic simulations were performed on hydrated model lipid multilayers that are representative of the lipid matrix in the outer skin (stratum corneum). We find that cholesterol transfers easily between adjacent leaflets belonging to the…

Soft Condensed Matter · Physics 2014-10-27 Chinmay Das , Massimo G. Noro , Peter D. Olmsted

We introduce a simple and predictive model for determining the phase stability of ternary phospholipid-cholesterol mixtures. Assuming that competition between the liquid and gel order of the phospholipids is the main driving force behind…

Soft Condensed Matter · Physics 2011-04-01 Jean Wolff , Carlos M. Marques , Fabrice Thalmann

With the aim of establishing a criterion for identifying when a lipid bilayer has reached steady state using the molecular dynamics simulation technique, lipid bilayers of different composition in their liquid crystalline phase were…

Soft Condensed Matter · Physics 2012-12-13 Rodolfo D. Porasso , José J. López Cascales

In an effort to understand ``rafts'' in biological membranes, we propose phenomenological models for saturated and unsaturated lipid mixtures, and lipid-cholesterol mixtures. We consider simple couplings between the local composition and…

Soft Condensed Matter · Physics 2009-11-10 Shigeyuki Komura , Hisashi Shirotori , Peter D. Olmsted , David Andelman

Temperature controlled Polarization Modulation Near-Field Scanning Optical Microscopy (PM-NSOM) measurements of a single supported $L_{\beta^{\prime}}$ 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) lipid bilayer are presented. The…

Soft Condensed Matter · Physics 2020-04-01 Merrell A. Johnson , Ricardo S. Decca

Type 1 diabetes (T1D) management can be significantly enhanced through the use of predictive machine learning (ML) algorithms, which can mitigate the risk of adverse events like hypoglycemia. Hypoglycemia, characterized by blood glucose…

Quantitative Methods · Quantitative Biology 2025-04-02 Beyza Cinar , Jennifer Daniel Onwuchekwa , Maria Maleshkova

We employ a molecular model to study a ternary mixture of saturated lipid, with tails of sixteen carbons, a mono unsaturated lipid with tails of eighteen carbons, and cholesterol. The model, solved within mean-field theory, produces several…

Biological Physics · Physics 2009-11-11 R. Elliott , I. Szleifer , M. Schick

Combining extensive molecular dynamics simulations of lipid bilayer systems of varying chemical composition with single-trajectory analyses we systematically elucidate the stochastic nature of the lipid motion. We observe subdiffusion over…

Soft Condensed Matter · Physics 2015-06-11 Jae-Hyung Jeon , Hector Martinez-Seara Monne , Matti Javanainen , Ralf Metzler

A molecular model is proposed of a bilayer consisting of fully saturated DPPC and mono unsaturated DOPC. The model not only encompasses the constant density within the hydrophobic core of the bilayer, but also the tendency of chain segments…

Biological Physics · Physics 2009-11-10 R. Elliott , K. Katsov , M. Schick , I. Szleifer

This study develops a unified model predicting the whole-body response to endotoxin. We simulate dynamics using differential equations examining the response to a lipopolysaccharide (LPS) injection. The model tracks pro- and…

Tissues and Organs · Quantitative Biology 2023-01-16 Kristen A. Windoloski , Elisabeth O. Bansgaard , Atanaska Dobreva , Johnny T. Ottesen , Mette S. Olufsen

We report a high energy-resolution neutron backscattering study, combined with in-situ diffraction, to investigate slow molecular motions on nanosecond time scales in the fluid phase of phospholipid bilayers of…

Biological Physics · Physics 2009-10-02 Maikel C. Rheinstadter , Jhuma Das , Elijah J. Flenner , Beate Bruening , Tilo Seydel , Ioan Kosztin
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