(C) 2009 Elsevier Ireland Ltd. All rights reserved.”
“High-fructose diet is known to produce cardiovascular and metabolic pathologies. The objective was to determine whether the timing of high fructose (10% liquid solution) intake affect the metabolic and cardiovascular outcomes. Male C57BL mice with radiotelemetric probes were divided into four groups: (1) 24 h water (control); (2) 24 h fructose (F24); (3)
12 h fructose during the light phase (F12L); (4) 12 h fructose during the dark phase (F12D). All fructose groups had higher fluid intake. Body weight was increased Ricolinostat mw in mice on restricted access with no difference in total caloric intake. Fasting glycemia was higher in groups with restricted access. F24 mice showed selleckchem a fructose-induced blood pressure increase during the dark period. Blood pressure circadian rhythms were absent in F12L mice. Results suggest that the timing of fructose intake is an important variable in the etiology
of cardiovascular and metabolic pathologies produced by high fructose consumption.”
“Helical R/S-poly(urethane urea)s (R/S-HPUUs) were synthesized successfully with R/S-1,1′-binaphthyl-2′,2-diol, toluene 2,4-diisocyanate, and 1,4-diaminobenzene by a simple hydrogen-transfer addition reaction. The structure and optical properties of R/S-HPUUs were investigated systematically with Fourier transform infrared spectroscopy, (1)H-NMR spectra, absorption and circular dichroism, thermogravimetry, differential scanning calorimetry, and X-ray diffraction measurements. Fourier transform infrared spectra showed that all the -NH and carbonyl groups in R/S-HPUUs were hydrogen-bonded. R-HPUU and S-HPUU were two enantiomorphs with wonderful mirror-image symmetry according to circular dichroism spectroscopy analysis. exhibited optical selleck chemical activity,
and the optical rotations were +54.7 and -60.7 degrees, respectively. R/S-HPUUs showed excellent thermal stability because of the plane-bifureated interchain hydrogen bonds and helical stereostructures according to thermogravimetry differential scanning calorimetry, and X-ray diffraction analysis. Moreover, the left-handed rotation was more stimulative for the construction of hydrogen bonds than the right-handed rotation, so S-HPUU showed higher thermal stability and better crystallizability. (C) 2008 Wiley Periodicals, Inc. J Appl Polym Sci 111: 2134-2140, 2009″
“Suspensions of insoluble polyelectrolyte complexes of dextran sulfate (DS) of different molecular masses with lactoferrin (LF) have been fabricated and characterized. The encapsulation efficiency of LF and DS in a complex at pH 3.0 and 4.0 was assessed, and particles were characterized by their sizes and zeta-potential. The complexes formed at pH 3.0 differed by a higher stability level.