Li-li Xing

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AIM To explore whether cyclooxygenase 2 (COX-2) -765G>C polymorphism is associated with susceptibility of colorectal cancer (CRC) and to evaluate the risk of colorectal cancer in relation to environmental exposures and polymorphism. METHODS We conducted a case-control study of 137 patients with colorectal cancer and 199 cancer-free controls in northeast(More)
AIM To explore the role of the matrix metalloproteinase-9 (MMP-9) polymorphism in colorectal cancer (CRC) in a northeast Chinese population. METHODS Genotyping of MMP-9-1562C>T and 279R>Q polymorphisms was carried out on blood samples from 137 colorectal cancer patients and 199 controls using polymerase chain reaction-restriction fragment length(More)
AIM To investigate the association of the cyclooxygenases-2 (COX-2) polymorphisms and susceptibility to gastric cancer (GC) by means of meta-analysis. METHODS Publications addressing the association between polymorphisms of COX-2 and susceptibility to GC were selected from the MEDLINE, EMBASE and CBMdisc databases. Data was extracted from the studies by 2(More)
Pd-ZnO nanoflowers with high uniformity were prepared via a novel one-step hydrothermal route. High sensitivity, fast response, high selectivity and low work temperature are obtained from Pd-ZnO nanoflower sensors. The sensitivity upon exposure to 300 ppm ethanol is up to 168 at 300  °C and maintains 2.6 at 120  °C. Such behaviors can be attributed to(More)
Extraordinarily high reversible capacity of lithium-ion battery anodes is realized from SnO(2)/α-MoO(3) core-shell nanobelts. The reversible capacity is much higher than traditional theoretical results. Such behavior is attributed to α-MoO(3) that makes extra Li(2)O reversibly convert to Li(+).
Ultrafast charging/discharging of lithium-ion battery anodes is realized from porous Co(3)O(4) nanoneedle arrays growing on copper foils. Their charge time can be shortened to ∼6 s, their reversible capacity at 0.5C rate is 1167 mAh/g. This implies that nano-arrays growing directly on copper foils are good candidates for anodes.
Extremely high sensitivity and low working temperature of gas sensors are realized from SnO(2)/α-MoO(3) heterostructure nanobelts. Their sensitivity against 500 ppm ethanol is up to 67.76 at the working temperature of 300 °C, which is higher than that of bare α-MoO(3) and SnO(2) nanostructures. Also the working temperature can be lowered down to 120 °C.(More)
WO(3) nanorods are uniformly coated with SnO(2) nanoparticles via a facile wet-chemical route. The reversible capacity of SnO(2)/WO(3) core-shell nanorods is 845.9 mA h g(-1), higher than that of bare WO(3) nanorods, SnO(2) nanostructures, and traditional theoretical results. Such behavior can be attributed to a novel mechanism by which nanostructured(More)
α-Fe2O3 nanoparticles are uniformly coated on the surface of α-MoO3 nanorods through a two-step hydrothermal synthesis method. As the anode of a lithium-ion battery, α-Fe2O3@α-MoO3 core-shell nanorods exhibit extremely high lithium-storage performance. At a rate of 0.1 C (10 h per half cycle), the reversible capacity of α-Fe2O3@α-MoO3 core-shell nanorods is(More)
OBJECTIVE To investigate the inhibitory effect of siRNA on heparanase expression and invasion ability gastric cancer cells. METHODS A heparanase mRNA-targeting double-stranded siRNA was designed with the bioinformatics technology. Human gastric cancer cells of the line SGC7901 were cultured and transfected with the siRNA of the concentrations of 5, 10,(More)