Macrophages express the P2X(7) receptor and other nucleotide (P2) receptors, and display the phenomenon of extracellular ATP (ATP(e))-induced P2X(7)-dependent membrane permeabilization, which occurs through a poorly understood mechanism. We used patch-clamp recordings, cytoplasmic Ca(2+) measurements and fluorescent dye uptake assays to compare P2X(7)-associated transport phenomena of macrophag...

Proteoglycan in foetal- and adult-rat tail tendon and adult-rabbit achilles tendon was stained for electron microscopy with a cationic phthalocyanin-like dye, based on cinchomeronic acid, in a 'critical electrolyte concentration' method [Scott (1973) Biochem. Soc. Trans. 1, 787-806). Provided that the tissue was fixed with glutaraldehyde or formaldehyde, regular orthogonal perifibrillar arrays ...

The combination of cationic and anionic dyes with proteins of tissues is difficult to interpret chemically because the reactions depend upon many factors. Among these are the physicochemical conditions of staining and the chemical structure, purity, and physical &ate of the pr0tein.l The study of these factors may be simplified by employing “model tissues” but the solid proteins heretofore avai...

In this work, we examined the nature and pathways of electronic excitation relaxation at low temperature in cationic pentamethine pyrylocyanine dye, which ground state is characterized by symmetric non-symmetric localization charge on carbon chain between terminal groups. The such localizations close to polymethine polyene conformations, respectively. effect symmetry breaking during two-way tra...

Cotton cationization with low molecular weight or polymeric cationic modifiers allows the effective dyeing of cotton substrates reactive dyes under salt-free and more environmentally friendly conditions. The current work focuses on spectroscopic study intermolecular interactions, which dictate physicochemical process associated fabric dyeing. Water-soluble copolymers vinyl benzyl chloride (VBC)...

Three new thiophenyl bridged triarylamine-donor based dyes with pyridyl anchoring groups and indolium acceptors have been synthesized studied as sensitizers for the p-type dye-sensitized solar cell (p-DSSC). Compared to known dicyano pyridinium same triarylamine cores, these broadened red-shifted UV–vis absorption spectra, high extinction coefficients extending beyond 700 nm. TD-DFT calculation...