The aim of the present study was to evaluate the antioxidant effects of aqueous fruit extract of Ziziphusjujuba on ethanol-induced oxidative stress and to examine its protective effects on sperm motility and plasma membrane integrity of male Wistar rats. Adult male rats (n = 28) were divided into four equal groups: the first group served as untreated controls, the second group of rats was given...

Intracellular pathogens are microorganisms that traverse the plasma membrane of a particular host cell...

the polysulfone-based membrane has been used in hemodialysis (hd) and it is continuously developed to maintain its sustainability on the subject of biocompatibility. during the polysulfone-based membrane development, several parameters should be considered to improve the membrane performances, such as excellent biocompatibility, appropriate ultrafiltration rate, and effective clearance of the t...

The localization of plasma membrane H+-ATPase has been studied at the optical microscope level utilizing frozen and paraffin sections of Avena sativa and Pisum sativum, specific antiATPase polyclonal antibody, and second antibody coupled to alkaline phosphatase. In leaves and stems the ATPase is concentrated at the phloem, supporting the notion that it generates the driving force for phloem loa...

Transport of [14C]tetraethylammonium (TEA), an organic cation, was studied in brush-border (BBMV) and basolateral (BLMV) membrane vesicles isolated from rabbit kidney cortex. In BBMV, the presence of an outwardly directed H+ gradient induced a marked stimulation of TEA uptake against its concentration gradient (overshoot phenomenon), whereas a valinomycin-induced inside-negative potential had n...

Receptors are macromolecules in or on cells that mediate physiological responses upon binding specific li-gands. Over the past few years, important advances have been made in the understanding of the biology of receptors, both at a basic and at a clinical level. Receptors bind their ligands with remarkable selectiv-ity and with high affinity, permitting a given physiological response to be elic...

IP3Rs (inositol 1,4,5-trisphosphate receptors) are expressed in the membranes of non-mitochondrial organelles in most animal cells, but their presence and role within the plasma membrane are unclear. Whole-cell patch-clamp recording from DT40 cells expressing native or mutated IP3Rs has established that each cell expresses just two or three functional IP3Rs in its plasma membrane. Only approx. ...

Ceramic oxygen permeable membranes (OPMs) are widely considered the “next generation” technology for pure separation and catalytic membrane reactors. However, main issue of OPM is high operating temperature (above 800 °C) resulting implications materials, cost, as well complexities (e.g., sealing, creep deformation, thermal shock during cycling). A new design coupling La0.6Sr0.4Co0.2Fe0.8O3-? w...

Rabbit alveolar macrophages were incubated in vitro with radioactive protein precursors. Plasma membranes were isolated from these cells, dissolved in phenol-urea-acetic acid, and separated by acrylamide gel electrophoresis. (3)H-leucine was rapidly incorporated into membrane protein. The rate of labeling with (3)H-leucine was markedly different from one protein band to another, indicating hete...