Meningiomas probably benefit from a hypofractionated schedule. The high alpha/beta value for AVM can be explained but needs further research. Fractionation versus radiosurgery can be considered when the primary objective is to avoid normal tissue damage.”
“The surface adsorption of fd filamentous phage (fd phage) dispersed in different solution pHs was investigated with functionalized SiO2/Si substrates. The fd phages at high pH (similar to 9.0) were well-adsorbed on the SiO2/Si surface that was functionalized by Wee1 inhibitor 3-aminopropyltriethoxysilane, whereas those at low pH (similar to 3.0) were well-adsorbed on the cleaned SiO2/Si surface. The high affinity of the carboxylic

acid groups (COO-) at high pH (similar to 9.0) was attributed to the fact that they give a higher adsorption to the positively charged amine groups (NH3+) on the surface of the substrate, similar to the effect of H3O+ at low pH (similar to 3.0) in a solution on the surface of the hydroxyl groups on the substrate (OH-). Interestingly, the aligned structures of the fd phage at intermediate pH (similar to 7.0), caused by the locally positively charged coat protein of the fd phage and the shear forces along the washing and blowing

direction, were identified. The effective spring constant of the fd phage bundles was estimated to be 0.672 N/m using a force-distance LY3039478 nmr curve. Our results offer prerequisite information for the bottom-up assembly in SiO2/Si substrates using the fd phage in bionanoelectronics. (C) 2011 American Institute of Physics. [doi:10.1063/1.3549113]“
“Purpose: To determine the effects of ultra-low dose beta-radiation (ULDBR) on the physical properties of human erythrocyte membranes.

Materials and methods: To study the structural changes induced by beta-radiation in erythrocyte ghosts, the interactions of

fluorescent probes (1-anilino-8-naphthalene sulfonate, pyrene) with the erythrocyte membranes were Fedratinib investigated. The fluorescent responses to the ULDBR were registered after the addition of (14)C-leucine (37-3700 kBq(1(-1)) in the cellular suspension.

Results: The ULDBR induced essential rearrangements of the membrane structure that appear in alterations of membrane spatial organisation, conformation of membrane proteins(structural flexibility, folding-unfolding), modification of surface and deep zones of membranes, lipid-protein interactions, and fluidity of annular lipids.

Conclusions: These findings are evidence that, as previously discovered by us, the reversible effect of ULDBR on the zeta potential of human erythrocytes and the functional state of the membrane signal systems is most likely realised through local structural and dynamic rearrangements of macromolecules in cellular membranes.