AIM: To observe the changes in neuropeptide Y(NPY) and the effect of Fu-Sheng powder(FSP) on NPY in the rat brain in a steady cerebral ischemia and reperfusion(I/R) model. METHODS: The models of rat brain injury were established by repeated cerebral I/R in rats with hyperlipidemia. Radioimmunoassay was performed to determine the level of NPY, while NPY mRNA expression was observed by in situ hybridization. RESULTS: After 1 day of I/R, compared with control group, the content of NPY in the model animals were significantly increased by 51.86% ( P

Objective To construct a recombinant immunotoxin expression vector composed of a single-chain Fv fragment of Sehistosorna japomicum and PE38KDEL gene,and identify the binding activity of the purified product with SEA antigen.Methods The V_H and V_L genes were amplified by PCR from the parent monoclonal antibody NP11-4.Then the amplified scFv and PE38KDEL genes were inserted into the expression vector pBAD/gIII A.The fusion protein expressed in E.coli Top10F' induced by L-arabinose.After purification,the activity of the immunotoxin was evaluated by Westem-blot and ELISA.Results The new recombinant immunotoxin expression vector pBAD/gIII A-scfv-PE38KDEL was constructed successfully.The main product was in inclusion bodies.ELISA assay showed that the refolding recombinant immunotoxin remained binding activity with SEA antigen.Conclusion A new recombinant expression plasmid pBAD/gIII A-scfv-PE38KDEL has been constructed and expressed successfully,which is useful in further study of the treatment of schistosomiasis japonica.

With the increasing prevalence of chronic obstructive pulmonary disease (COPD) and the extremely high mortality, disability, symptom burden and dysfunction, as well as the need for continuous drug management and care and increased rehospitalization rate, it brings patients, families and even society huge economic burden. The transitional care model provides non-drug treatment method to help patients get through the transition period safely and steadily, it also improves patients' self-care ability, quality of life and reduce hospital readmission. This review will start from the concept of disease management in transitional period, elaborate on the problems and core elements of transitional caring, then discuss the application of advanced practice nurse-dominated transitional caring mode in COPD, so as to provide theoretical and practical basis for improving the quality of chronic diseases management in China.