Metastasis describes the ability of a tumor to invade normal tissue and generate secondary tumors at sites distant from the primary tumor. The mechanism responsible for the inhibition of tumor metastasis by different agents is at least partly associated with the ability to interfere with cellular functions such as adhesiveness, motility and invasiveness. Certainly effective treatment of metasta...

Membrane cholesterol is critical for signaling processes in a variety of tissues. We will address here current evidence supporting an emerging role of cholesterol on excitation-contraction coupling and glucose transport in skeletal muscle. We have centered our review on the transverse tubule system, a complex network of narrow plasma membrane invaginations that propagate membrane depolarization...

Cryopreservation of semen is the most widely applied reproductive biotechnological tool used for rapid genetic improvement of livestock through artificial insemination, but the process of cryopreservation and thawing inflicts certain damage to spermatozoa plasma membrane and acrosome. This damage includes swelling and breakage of plasma membrane, loss of membrane selective permeability, change ...

we had the opportunity to examine the cranium of a young woman found at the well-known neolithic site of ali koshon the deh luran plain in southwestern iran. it has previously been claimed that her head shows traces of modification,a practice which can be termed as either cultural or artificial cranial modification. here, we describe several macroscopiccharacteristics of the modified crania and...

membrane technology is used to separate water or solvents from salts or pollutants. this technique could be used for water treatment. for using of polyether sulfone (pes) hollow fiber membranes in water treatment processes, the pes hollow fiber membranes were prepared by dry-wet spinning method and heated in an oven at: 120°c, 150°c and 180°c. the effect of heating on performance of membranes w...

large unilamellar liposomes and multilamellar vesicles consisting of dmpc interacted with cationic phosphorus-containing dendrimers cpds g3 and g4. dsc and ζ -potential measurements have shown that liposomal-dendrimeric molecular recognition occurs due to the interaction between the complementary surface groups. calorimetric studies indicate that the enthalpy of the transition of the lipids tha...