Xianglin Cheng

Learn More
Panax notoginseng (Burk) F.H. Chen is important medicinal plant of the Araliacease family. Triterpene saponins are the bioactive constituents in P. notoginseng. However, available genomic information regarding this plant is limited. Moreover, details of triterpene saponin biosynthesis in the Panax species are largely unknown. Using the 454 pyrosequencing(More)
BACKGROUND Rapid immunochromatographic tests can detect disease markers in 10-15 minutes, which facilitates clinical diagnosis and treatment programs. However, most immunochromatographic tests employ gold nanoparticles as reporters, and these have only moderate sensitivity and act as qualitative methods for analyzing high biomarker concentrations. METHODS(More)
For making crop development more autonomous and interactive, multi-agent was introduced into growth model of virtual crop. A crop organ was regarded as an agent, the agent was divided into perception module, information processing module and action module to realize single agent organ's growth. Model of crop development based on multi-agent was built(More)
BACKGROUND This study is aimed to quantify the strength of the association between rs1801133 polymorphism and ischemic stroke risk. METHODS We have searched Medline, Springer, and Embase for studies investigating the association between rs1801133 polymorphism and ischemic stroke risk. We estimated the pooled odds ratio with its 95% confidence intervals to(More)
OBJECTIVE To investigate the clinical efficacy, safety, predictability, corneal sensitivity, tear function and recovery of subbasal nerves after femtosecond lenticule extraction (FLEx) and laser in situ keratomileusis (LASIK). METHODS In this prospective, nonrandomized, comparative clinical study, 49 patients (98 eyes) were divided into two groups. FLEx(More)
OBJECTIVE To investigate the relationship between sex hormones and metabolic syndrome (MS), as well as its components in elderly men. METHODS 1 505 elderly men (≥60 years old, mean age 75.4±9.7 years old) who participated in a routine health screening examination in PLA general hospital from May to June in 2012 were enrolled in this cross-sectional study.(More)
Neuronal synchronization at gamma band frequency (20-80 Hz, γ oscillations) is closely associated with higher brain function, such as learning, memory and attention. Nicotinic acetylcholine receptors (nAChRs) are highly expressed in the hippocampus, and modulate hippocampal γ oscillations, but the intracellular mechanism underlying such modulation remains(More)
PURPOSE Some studies have reported that vascular endothelial growth factor (VEGF) genetic polymorphisms are associated with recurrent pregnancy loss (RPL), but the results are controversial. This study is aimed to quantify the strength of this association. METHODS A systematic review of the published literature from Medline, Springer, and China National(More)
BACKGROUND The association between PTPN22 R620W polymorphism and risk of myasthenia gravis (MG) remains controversial. Therefore, we did this meta-analysis to investigate this association. MATERIAL AND METHODS We did a comprehensive search in PubMed, Medline, Embase, CNKI (China National Knowledge Infrastructure), and Wanfang electronic databases to(More)