purpose: deformability/rheologic behavior of erythrocytes are related to near-surface membrane fluidity. specific agents can increase erythrocyte membrane fluidity in order to adjust hemodynamics in cardiovascular diseases. grapefruit flavanone naringenin has been proposed for potential use in an alternative therapy of cardiovascular conditions. in respect to this, we assessed here effects o...

Recycling of aluminum alloys often decrease fluidity, consequently influence the castability of the alloy. In this study, the fluidity of Al-Zn alloys, such as the standard A713 alloy with and without scrap addition has been investigated. The scrap added was comprised of contaminated alloy turning chips. Fluidity measurements were performed with double spiral fluidity test consisting of gravity...

Research has just begun to study associations between sexual fluidity and health among cisgender individuals; only one cross-sectional study examined these links among transgender individuals. The goals of the current study were to prospectively examine fluidity in sexual attractions and fluidity in sexual orientation identity, and associations with health-related outcomes. Participants were a ...

Cell membrane is made up of a complex structure of lipids and proteins that diffuse laterally giving rise to what we call membrane fluidity. During cellular development, such as differentiation cell membranes undergo dramatic fluidity changes induced by proteins such as ARC and Cofilin among others. In this study we used the generalized polarization (GP) property of fluorescent probe Laurdan us...

Here we describe techniques that we developed for monitoring membrane fluidity of individual yeast cells during environmental adaptation and physiological changes. Multiphoton scanning fluorescence microscopy using laurdan as a membrane probe enables determination whether fluidity changes seen by spectroscopy reflect universal responses or changes only of sub-populations. Yeast membranes are a ...

The purpose of this study was to investigate the effect of ultradeformable liposome components, Tween 20 and terpenes, on vesicle fluidity. The fluidity was evaluated by electron spin resonance spectroscopy using 5-doxyl stearic acid and 16-doxyl stearic acid as spin labels for phospholipid bilayer fluidity at the C5 atom of the acyl chain near the polar head group (hydrophilic region) and the ...

The role of docosahexaenoic acid (DHA) in the fluidity of the annular lipid regions and their associated membrane-bound proteins is still not as well understood as that in the global (bulk) lipid regions. We therefore studied the effects of dietary DHA on the relationship between annular and global lipid fluidity and membrane-bound enzymes such as 5'-nucleotidase and Mg(2)+-ATPase in the rat bi...

The human promyelocytic leukemia cell line. HL-60. undergoes differentiation in the presence of dimethyl sulfoxide (DMSO). phorbol esters, and other agents. Studies were undertaken to determine whether agents that promote differentiation influence membrane fluidity and to assess whether changes in membrane fluidity occur during the process of differentiation. Cells were grown in the presence of...

A proper regulation of membrane fluidity is critical for cellular activities such as communication between cells, mitosis, and endocytosis. Unsaturated lipids, a main component of biological membranes, are particularly susceptible to oxidative attack of reactive oxygen species. The oxidation of lipids can produce structural derangement of membranes and eventually alter the membrane fluidity. We...