Objective To observe the effect of liraglutide, an analogue of glucagon like peptide-1 (GLP-1), on the expression of PDX-1 gene in the islet beta cells of type 2 diabetes rats. Methods Sixty male SD rats were divided into 3 groups:normal control group, diabetic model group and GLP-1 group. Normal control group was given normal diet and diabetic model group and GLP-1 group were given high fat diet. After the eighth weekend, the high fat diet group was intraperitoneally injected with streptozotocin (STZ) 30 mg/(kg·bw), and the GLP-1 group was subcutaneously injected with liraglutide 200μg/kg with 2 times per day for 8 weeks. The other groups were treated with normal saline by subcutaneous injection. Real-time fluorescent quantitative reverse transcription polymerase chain reaction (Real-Time RT-PCR) was used to detect the expression of PDX-1 gene in rat pancreatic islet cells. Results The expressions of PDX-1 mRNA in the GLP-1 group and untreated group were significantly lower (P <0.001) than that in the normal control group, but significantly higher than that after GLP-1treatment (P < 0.001). Conclusion GLP-1 can upregulate the expression of PDX-1 gene in the islet beta cells of type 2 diabetes rats.

Purpose/Significance To strengthen the management of scientific and technical novelty search of traditional Chinese med-icine(TCM),and to standardize the work of novelty search.Method/Process The process of"Specification for Scientific and Technical Novelty Search of Traditional Chinese Medicine"standard formulation is expounded in detail,and the key points of the standard and its application in science and technology novelty management system are analyzed.Result/Conclusion The standard can better guide the scientific and technical novelty search institutions,standardize the writing of scientific and technical novelty search reports,improve the quality of scientific and technical novelty search reports,and help promote the healthy development of scientific and technical novelty search of TCM.The scientific and technical novelty management system based on the standard improves the efficiency of novelty search.