1.Management window for patients with atrial fibrillation in community health center
Jiangtao GU ; Huan SONG ; Weihua GONG ; Ying ZHOU ; Wei CHENG ; Lie DAI ; Zhencheng LI
Chinese Journal of General Practitioners 2013;(6):463-465
A management window model for patients with atrial fibrillation (AF) was established in Tilanqiao Community Health Service Center cooperated with tertiary hospitals.Patients were screened and treated in the community health service center,and a comprehensive management plan was conducted and patients were followed-up.A total of 105 patients with atrial fibrillation (97.2%) were effectively managed with an average follow-up of 10.6 months.The CHADS2 score ≥ 2 in 78 cases,including 11 cases with administration of warfarin (14.1%) and 26 cases with paroxysmal AF without transition to persistent atrial fibrillation.Compared to the data before management,the rate of taking aspirin and warfarin in managed patients was increased (all P < 0.05),the international normalized ratio (INR) of patients receiving warfarin was improved (P < 0.05) ; the ratio of receiving comprehensive treatment program,standardized treatment and health education were significantly increased (P < 0.05) ; the awareness of the disease,treatment compliance and satisfaction of patients were improved significantly (all P < 0.05).The results suggest that the management widow model is feasible and effective for management of patients with atrial fibrillation in community health service centers.
2.Expression and characterization of recombinant wheat quiescin sulfhydryl oxidase and its effect on bread quality.
Nian DU ; Yuanyuan DENG ; Zhencheng WEI ; Yan ZHANG ; Xiaojun TANG ; Ping LI ; Pengfei ZHOU ; Guang LIU ; Mingwei ZHANG
Chinese Journal of Biotechnology 2021;37(2):593-603
Wheat quiescin sulfhydryl oxidase was expressed in Escherichia coli for developing a new biological flour improver. The synthesized wqsox gene was constructed into the vector pMAL-c5x and expressed in E. coli, then the expression conditions of recombinant protein was optimized. The MBP fusion label in recombinant protein was removed by protease digestion after affinity purification. Moreover, enzymatic properties of the purified wQSOX and its effect on bread quality were investigated. The synthesized wqsox gene contained 1 359 bp and encoded 453 amino acids with a deduced molecular weight of 51 kDa. The constructed recombinant vector pMAL-c5x-wqsox could successfully express soluble recombinant protein MBP-wQSOX in E. coli Rosetta gamiB(DE3), and the optimal induced expression conditions for recombinant protein were 25 °C, 0.3 mmol/L IPTG and 6 h. MBP fusion tag was cut out by factor Xa protease and wQSOX was prepared after affinity purification. wQSOX could catalyze the oxidation of DTT, GSH and Cys, accompanying the production of H2O2, and exhibited the highest substrate specificity for DTT. Furthermore, enzymatic properties results demonstrated that the optimal temperature and pH for wQSOX catalyzing oxidation of DTT was 50 °C and 10.0, respectively, and wQSOX presented a good stability under high temperature and alkaline environment. The addition of wQSOX with 1.1 U/g flour significantly (P<0.05) increased 26.4% specific volume of the bread, and reduced 20.5% hardness and 24.8% chewiness of bread crumb compared to the control, indicating a remarkable ability to improve the quality of bread.
Bread
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Escherichia coli/genetics*
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Hydrogen Peroxide
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Oxidoreductases
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Triticum