We retrieved 162 patients with malignant hypertension and 34 patients (17%) fulfilled the predefined criteria for hypertensive encephalopathy. Data on retinal examination were incomplete for 6 patients (18%), thus leaving 28 patients who were analysed for the presence or absence of grade III and IV HRP. In 9 (32%) patients with hypertensive encephalopathy, grade III or IV HRP was absent, 11 (39%) patients presented with grade III and 8 (29%) patients with grade IV retinopathy. Patients without retinal abnormalities were on average 13 years younger (P A-1210477 ic50 = 0.05), more often black (P = 0.02) and displayed lower blood
pressure (BP) values (P = 0.04 for systolic and diastolic BP). A substantial proportion of patients with hypertensive encephalopathy lack grade III or IV HRP. This suggests that the decision to admit these patients should not only rely on the presence of grade III and IV retinopathy alone, but should also include a careful neurological examination. Journal of Human Hypertension (2010) 24, 274-279; doi:10.1038/jhh.2009.82;
published online 29 October 2009″
“NaNbO3 : SrTiO3 interface nanolayers are studied by combining first-principles modeling and experimental approach. The nature of NaNbO3 : SrTiO3 interface is investigated using density-functional theory calculations. Interface parameters are experimentally estimated using analysis of the dielectric response
of SrTiO3 and NaNbO3 epitaxial ABT-737 concentration films and NaNbO3 : SrTiO3 superlattices. It is shown that NaNbO3 : SrTiO3 interfaces can be approximated by dielectric nanolayers with thickness Selleck BEZ235 1-2 nm and with temperature independent permittivity 25-55. Mechanism responsible for the nanolayer formation is the ionic charge mismatch between constituents. (C) 2011 American Institute of Physics. [doi:10.1063/1.3527900]“
“Cadmium interference with Fe nutrition has a strong impact on the development and efficiency of the photosynthetic apparatus. To shed more light on the interaction between Fe and Cd, it was studied how iron given in moderate excess under Cd stress affects the development and functioning of chlorophyll protein complexes. Poplar plants grown in hydroponics up to four-leaf stage were treated with 10 mu M Cd(NO(3))(2) in the presence of 50 mu M Fe((III))-citrate as iron supply (5xFe + Cad) for two weeks. Though leaf area growth was inhibited similarly to that of Cad (10 mu M Cd(NO(3))(2) + 10 mu M Fe((III))-citrate) plants, chlorophyll content, (14)CO(2) fixation and quenching parameters calculated from PAM fluorescence induction measurements were control-like in 5xFe + Cad leaves.