Lipid peroxidation is a degenerative chain reaction in biological membranes that may be initiated by exposure to free radicals. This process is associated with changes in the membrane fluidity and loss of several cell membrane-dependent functions. 5-methoxytryptophol (ML) is an indole isolated from the mammalian pineal gland. The purpose of this study was to investigate the effects of ML (0. 01...

Fluidity as a prominent feature of the phospholipid portion of biological membranes, as well as of model phospholipid bilayer systems, has been detected by numerous physical techniquesl). However, correlation of this fluidity with biological functions of membranes is, as yet, documented in only a few cases. For example, fatty acid auxotrophs of E. coli grown on different fatty acids exhibit an ...

Many eurythermal organisms alter composition of their membranes to counter perturbing effects of environmental temperature variation on membrane fluidity, a process known as homeoviscous adaptation. Marine intertidal gastropods experience uniquely large thermal excursions that challenge the functional integrity of their membranes on tidal and seasonal timescales. This study measured and compare...

The curing of fluid resins is performed by pouring the polymer-monomer mixture into molds made of hydrocolloid[1] or special plaster investment[2], before the fluidity of resin mixture disappears. Therefore, it can be said that the fluidity of resin mixture is an important factor which not only determines the pouring time but also is much related to the quality of the products. The viscosity of...

Fluid shear stress (FSS) has been shown to be an ubiquitous stimulator of mammalian cell metabolism. Although many of the intracellular signal transduction pathways have been characterized, the primary mechanoreceptor for FSS remains unknown. One hypothesis is that the cytoplasmic membrane acts as the receptor for FSS, leading to increased membrane fluidity, which in turn leads to the activatio...

In the present study, to determine a possible role of nitric oxide (NO) in the regulation of membrane functions, we examined the relationship between plasma NO level and membrane fluidity of erythrocytes in postmenopausal women. We evaluated the membrane fluidity of erythrocytes obtained from hypertensive and normotensive postmenopausal women by means of an electron paramagnetic resonance (EPR)...

Risk generated by uncertainty about future management policies appears to affect firms’ cost of borrowing. In a sample of S&P 1500 firms between 1987 and 2012, CDS spreads, loan spreads and bond yield spreads all decline over the first three years of CEO tenure, holding other macroeconomic, firm, and security level factors constant. This decline occurs regardless of the reason for the prior CEO...

Purpose The article contributes to affective ethnography focussing on the fluidity of organizational spacing. Through concept space, it highlights those elements that are ephemeral and elusive – like affect, aesthetics, atmosphere, intensity, moods proposes explore affect as spatialized space affective. Design/methodology/approach Fluidity is proposed a conceptual lens sits at conjunction highl...

Hyperhomocysteinemia and oxidative stress may be strongly linked to hypertension, atherosclerosis and other cardiovascular diseases. The present study was performed to investigate possible relationships among plasma total homocysteine, plasma 8-iso-prostaglandin F2α (8-isoPG F2α: an index of oxidative stress), and membrane fluidity (a reciprocal value of membrane microviscosity) in hypertension...

Social connections are mutable. Prior experimental work has shown that circumstances fostering an intermediate rate of forming and breaking social ties (“network fluidity”) facilitate the maintenance of optimal levels of cooperation in experimental social networks. Previous observational work has also suggested a relationship between economic outcomes and network structure (measured statically)...