The response and recovery times to acetone were about 5 and 8 s, respectively. These results indicate Co-SnO2 composite nanofibers are good candidates for fabrication of high performance acetone sensors for practical application.”
“Objective: This study was conducted was to detect vascular endothelial growth factor (VEGF) levels in peripheral blood of patients with pregnancy-induced hypertension (PIH) syndrome and CDK phosphorylation to investigate VEGF correlation with PIH occurrence. Methods: Double-antibody enzyme-linked imnnunosorbent assay and fluorescent quantitative polymerase chain reaction were used to detect VEGF levels in the peripheral

blood of non-pregnant women (normal group, 30 cases), normal pregnant women (pregnancy group, 30 cases) and P1H patients (PIH group, 30 cases). Results: VEGF level in the pregnancy group was significantly higher than in the normal group, and the difference between these two groups was significant (P smaller JNK-IN-8 datasheet than 0.001). In the pregnancy group, VEGF reached the maximum level at the metaphase stage of pregnancy and started to decrease at advanced pregnancy. VEGF level in the PIH group was significantly lower than in the pregnancy group at

advanced pregnancy (P smaller than 0.01), and VEGF level significantly and gradually decreased with PIH aggravation (P smaller than 0.05). Conclusions: The significant decrease of VEGF level after pregnancy was possibly an important factor of PIH pathogenesis.”
“Background and Purpose-Penumbral biomarkers

promise to individualize treatment windows in acute ischemic stroke. We used a novel magnetic resonance imaging approach that measures oxygen metabolic index (OMI), a parameter closely related PX-478 to positron emission tomography-derived cerebral metabolic rate of oxygen utilization (CMRO2), to derive a pair of ischemic thresholds: (1) an irreversible-injury threshold that differentiates ischemic core from penumbra and (2) a reversible-injury threshold that differentiates penumbra from tissue not-at-risk for infarction. Methods-Forty patients with acute ischemic stroke underwent magnetic resonance imaging at 3 time points after stroke onset: smaller than 4.5 hours (for OMI threshold derivation), 6 hours (to determine reperfusion status), and 1 month (for infarct probability determination). A dynamic susceptibility contrast method measured cerebral blood flow, and an asymmetrical spin echo sequence measured oxygen extraction fraction, to derive OMI (OMI=cerebral blood flowxoxygen extraction fraction). Putative ischemic threshold pairs were iteratively tested using a computation-intensive method to derive infarct probabilities in 3 tissue groups defined by the thresholds (core, penumbra, and not-at-risk tissue).