Zhigang Yan

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BACKGROUND The prevalence of Helicobacter pylori is higher in developing countries. The aim of this study was to investigate the prevalence and risk factors of H. pylori infection in areas with high prevalence of gastric cancer in Jiangsu Province, China. METHODS A prospective epidemiologic survey of H. pylori infection was accomplished in a natural(More)
The ongoing avian H7N9 influenza outbreaks in China have caused significant human fatal cases and the virus is becoming established in poultry. Mutations with potential to increase mammalian adaptation have occurred in the polymerase basic protein 2 (PB2) and other viral genes. Here we found that dual 627K and 701N mutations could readily occur during(More)
The transforming growth factor (TGF)-β is a potent growth inhibitor primarily responsible for cell growth, differentiation, and apoptosis, and frequently perturbed during development of tumors, including gastric cancer. TGF-β receptor type I (TGFβR1) may be a modifier of cancer risk by constitutively decreasing the TGF-β inhibitory signals during early(More)
Urban traffic tunnel is a new and effective urban transport mode. The operation managerial experience about urban traffic tunnel is deficient. According to the needs of urban traffic, this paper studied the structure of urban traffic tunnel and designed the safety evaluation index system of urban traffic tunnel. The safety evaluation index system considered(More)
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