1.Practice and exploration of the cultivation system of hospital talents by levels and types
Yan HUANG ; Jing ZHANG ; Pengzhan ZHU ; Lin XU ; Tongtong LIU ; Nan CUI ; Jing LI ; Yan ZHANG
Chinese Journal of Hospital Administration 2021;37(1):6-9
Talents constitute core resource in the development of healthcare sector. Based on the situation of the talent team in the Affiliated Hospital of Qingdao University, the authors systematically constructed the hierarchical and classified system for talent cultivation, centering on three key areas of talent cultivation, evaluation and assessment. The authors analyzed the achievements since the implementation in 2016, namely the innovation of talent evaluation, the construction of discipline echelon, and the communication and inter-departmental cooperation. At the same time, the authors further put forward targeted suggestions to promote the development of talent teams in terms of transforming the human resource management model, increasing policy support and funding, implementing refined management, and improving talent evaluation indicators by the levels and types.
2.Preliminary exploration on evaluation system of hospital young talent orientation training based on AHP method
Tongtong CUI ; Xia WANG ; Yao ZHANG ; Yanjuan JIANG ; Deyang LIN ; Jinlong LV ; Yu CUI ; Jia MA ; Jinning DUAN
Chinese Journal of Medical Science Research Management 2018;31(3):215-218
Objective Aimed to develop the evaluation system and weight of hospital orientation training.Methods Literature review,Delphi,questionnaire,AHP to develop the evaluation system and determined the weight with Satty's method.Results The evaluation system includes 3 division's 13 items.Conclusions Course content,teaching method,course difficultness and occupational plan ning play the most important role,and should be paid more attention.
3.The effect of wza gene deletion in Klebsiella pneumoniae on capsule formation and bacteriophage sensitivity
Zheng FAN ; Hongbo LIU ; Yuchen CHEN ; Xiaohu CUI ; Zhoufei LI ; Tongtong FU ; Jing YUAN
Chinese Journal of Preventive Medicine 2024;58(7):992-997
Objective:To investigate the effects of wza gene deletion in Klebsiella pneumoniae on capsule formation ability and bacteriophage sensitivity. Methods:The wza deletion mutant strain was constructed through a temperature-sensitive plasmid-mediated homologous recombination. The growth curves of W14 and Δ wza were detected by measuring the optical density OD 600. In order to analyze the effect of gene wza on bacterial capsule formation, wild-type strain W14 and Δ wza mutant strain were detected by transmission electron microscope, and their capsule contents were measured by quantifying the uronic acid contents. The plaque assay was used to detect bacterial sensitivity to bacteriophage in wild-type strain W14 and Δ wza mutant strain. The t test was used to compare whether there were differences in the contents of uronic acid in the capsules of wild-type strain W14 and Δ wza mutant strain. Results:The PCR results revealed that the Δ wza mutant strain was successfully constructed. Compared with wild-type strain W14, the growth curves of Δ wza on the solid plates demonstrated a slightly slower growth. However, no difference in growth was observed among wild-type strain W14 and Δ wza mutant strains in LB broth. The transmission electron microscope results showed that wza gene deletion resulted in the loss of capsule in bacteria. The uronic acid content assay suggested that the capsule content was significantly decreased in Δ wza mutant strain (45.963±2.795) μg/ml compared with wild-type strain W14 (138.800±5.201) μg/ml. There was a statistical difference between the two groups ( t=27.233, P<0.001). The plaque assay indicated that bacteria lost its sensitivity to bacteriophage when gene wza was deleted. Conclusion:Deletion of the wza gene impairs bacterial capsule formation ability and can affect bacterial sensitivity to bacteriophage phiW14.
4.Expression, purification and functional validation of phage depolymerase from hypervirulent Klebsiella pneumoniae serotype K1
Zheng FAN ; Yuchen CHEN ; Hongbo LIU ; Xiaohu CUI ; Zhoufei LI ; Tongtong FU ; Jing YUAN
Chinese Journal of Preventive Medicine 2024;58(9):1348-1353
Objective:To express and purify the phage depolymerase from hypervirulent Klebsiella pneumoniae (hv Kp) serotype K1 and validate its function. Methods:Phage that infected serotype K1-type hv Kp was isolated from hospital sewage. The biology and morphology of the phage were determined by plaque assay and transmission electron microscopy. The whole genome of the phage was sequenced by the Illumina HiSeq 2500 platform. The presence of depolymerase was determined by observing the plaque halo. Bioinformatic analysis and prokaryotic protein expression system were further used to predict and identify phage depolymerase. The depolymerase gene fragment was obtained by PCR and cloned into the pET28a expression vector, and the expression and purification of the depolymerase were completed in strain BL21. The depolymerase activities on the capsular polysaccharide of serotype K1-type hv Kp clinical isolates were detected by plaque assay and low-speed centrifugation assay. Results:A lytic phage (phiA2) that infected serotype K1-type hv Kp clinical isolate was isolated from hospital sewage. It was typical of the Caudovirales order and Autographiviridae family, and its whole genome was 43 526 bp in length and contained 51 coding domain sequences. The phage phiA2-derived depolymerase phiA2-dep was predicted, expressed and purified. The plaque assay and low-speed centrifugation assay indicated that the depolymerase phiA2-dep had good lytic activity on the capsular polysaccharide of serotype K1-type hv Kp clinical isolates. Conclusion:Depolymerase phiA2-dep can specifically degrade the capsular polysaccharide of serotype K1-type hv Kp, which has potential application value in treating bacterial infection.
5.The effect of wza gene deletion in Klebsiella pneumoniae on capsule formation and bacteriophage sensitivity
Zheng FAN ; Hongbo LIU ; Yuchen CHEN ; Xiaohu CUI ; Zhoufei LI ; Tongtong FU ; Jing YUAN
Chinese Journal of Preventive Medicine 2024;58(7):992-997
Objective:To investigate the effects of wza gene deletion in Klebsiella pneumoniae on capsule formation ability and bacteriophage sensitivity. Methods:The wza deletion mutant strain was constructed through a temperature-sensitive plasmid-mediated homologous recombination. The growth curves of W14 and Δ wza were detected by measuring the optical density OD 600. In order to analyze the effect of gene wza on bacterial capsule formation, wild-type strain W14 and Δ wza mutant strain were detected by transmission electron microscope, and their capsule contents were measured by quantifying the uronic acid contents. The plaque assay was used to detect bacterial sensitivity to bacteriophage in wild-type strain W14 and Δ wza mutant strain. The t test was used to compare whether there were differences in the contents of uronic acid in the capsules of wild-type strain W14 and Δ wza mutant strain. Results:The PCR results revealed that the Δ wza mutant strain was successfully constructed. Compared with wild-type strain W14, the growth curves of Δ wza on the solid plates demonstrated a slightly slower growth. However, no difference in growth was observed among wild-type strain W14 and Δ wza mutant strains in LB broth. The transmission electron microscope results showed that wza gene deletion resulted in the loss of capsule in bacteria. The uronic acid content assay suggested that the capsule content was significantly decreased in Δ wza mutant strain (45.963±2.795) μg/ml compared with wild-type strain W14 (138.800±5.201) μg/ml. There was a statistical difference between the two groups ( t=27.233, P<0.001). The plaque assay indicated that bacteria lost its sensitivity to bacteriophage when gene wza was deleted. Conclusion:Deletion of the wza gene impairs bacterial capsule formation ability and can affect bacterial sensitivity to bacteriophage phiW14.
6.Expression, purification and functional validation of phage depolymerase from hypervirulent Klebsiella pneumoniae serotype K1
Zheng FAN ; Yuchen CHEN ; Hongbo LIU ; Xiaohu CUI ; Zhoufei LI ; Tongtong FU ; Jing YUAN
Chinese Journal of Preventive Medicine 2024;58(9):1348-1353
Objective:To express and purify the phage depolymerase from hypervirulent Klebsiella pneumoniae (hv Kp) serotype K1 and validate its function. Methods:Phage that infected serotype K1-type hv Kp was isolated from hospital sewage. The biology and morphology of the phage were determined by plaque assay and transmission electron microscopy. The whole genome of the phage was sequenced by the Illumina HiSeq 2500 platform. The presence of depolymerase was determined by observing the plaque halo. Bioinformatic analysis and prokaryotic protein expression system were further used to predict and identify phage depolymerase. The depolymerase gene fragment was obtained by PCR and cloned into the pET28a expression vector, and the expression and purification of the depolymerase were completed in strain BL21. The depolymerase activities on the capsular polysaccharide of serotype K1-type hv Kp clinical isolates were detected by plaque assay and low-speed centrifugation assay. Results:A lytic phage (phiA2) that infected serotype K1-type hv Kp clinical isolate was isolated from hospital sewage. It was typical of the Caudovirales order and Autographiviridae family, and its whole genome was 43 526 bp in length and contained 51 coding domain sequences. The phage phiA2-derived depolymerase phiA2-dep was predicted, expressed and purified. The plaque assay and low-speed centrifugation assay indicated that the depolymerase phiA2-dep had good lytic activity on the capsular polysaccharide of serotype K1-type hv Kp clinical isolates. Conclusion:Depolymerase phiA2-dep can specifically degrade the capsular polysaccharide of serotype K1-type hv Kp, which has potential application value in treating bacterial infection.
7.Effect of doctor-nurse integration mode health education on the compliance of patients with breast cancer treated with Fulvestrant injection
Dongxia YANG ; Huili QU ; Zhen SONG ; Jiaojiao ZHAO ; Tongtong SONG ; Dong LIU ; Jian CUI
Chinese Journal of Modern Nursing 2017;23(31):4017-4020
Objective To explore the effect of doctor-nurse integration mode health education on the compliance of patients with breast cancer treated with Fulvestrant injection. Methods A total of 89 patients with breast cancer who received Fulvestrant injection in Breast Center of the Affiliated Hospital of Qingdao University were selected from October 2015 to June 2016 by convenient sampling method and they were divided into observation group (n=46) and control group (n=43) using randomly number table method. Patients in the control group received routine outpatient clinic medication treatment, while patients in the observation group received extra doctor-nurse integration mode health education during the treatment circle. Endocrine therapy compliance questionnaire for breast cancer patients was applied to assess treatment compliance of patients in two groups. Results After the implementation of doctor-nurse integration mode health education, scores of treatment compliance and each dimension of observation group were significantly higher than those of the control group (P<0.05). Conclusions For patients with breast cancer treated with endocrine therapy for a long time, the implementation of doctor-nurse integration mode health education could improve the compliance of patients, ensure the completion of the treatment cycle and promote the rehabilitation of patients.
8.Effect of Mahuang Xixin Fuzitang on Migration of Dendritic Cells in Mice by Regulating Rho/ROCK Signaling Pathway
Shuyue FAN ; Luwei WU ; Tongtong SUN ; Yuying NI ; Jing GAO ; Ying CUI ; Min LIU
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(18):35-42
ObjectiveTo investigate the inhibitory effect of Mahuang Xixin Fuzitang on the migration of dendritic cells (DCs) in mice and its underlying mechanism. MethodMouse bone marrow-derived DCs were isolated and cultured. The morphological changes of the cells at different stages were observed under a microscope, and the CD11c+ proportion was detected by flow cytometry to identify DC purity. Cells were treated with Mahuang Xixin Fuzitang (1, 2, 5, 10, 20, 40, 50, 100 g·L-1) for 24 hours, and the effect of Mahuang Xixin Fuzitang on cell proliferation was assessed using the cell counting kit-8 (CCK-8) assay to determine the appropriate concentrations for treatment. After modeling by lipopolysaccharide (LPS) induction, DCs were divided into a blank group, a model group, and Mahuang Xixin Fuzitang groups (2, 4, 8 g·L-1). The expression of surface molecules CD80, CD86, and major histocompatibility complex-Ⅱ (MHC-Ⅱ) were detected by flow cytometry. Transwell chamber assay was used to observe cell migration. The levels of chemokine C-C-primitive receptor 7 (CCR7) and chemokine C-X-C-primitive receptor 4 (CXCR4) on the cell surface were detected by enzyme-linked immunosorbent assay (ELISA). The expression of filamentous actin (F-actin) in the cell microfilament cytoskeleton was detected by immunofluorescence (IF) staining. Real-time quantitative polymerase chain reaction (Real-time PCR) was employed to determine the mRNA expression levels of Ras homolog family member A (RhoA) and Rho-associated coiled-coil containing protein kinase 1 (ROCK1). Western blot analysis was performed to detect the protein expression of RhoA and ROCK1. ResultCompared with the blank group, the model group exhibited significantly higher expression levels of CD80, CD86, and MHC-Ⅱ (P<0.01), a significantly increased number of cells migrating to the lower chamber (P<0.01), and significantly elevated levels of CCR7 and CXCR4 (P<0.05, P<0.01). Additionally, F-actin expression was significantly increased (P<0.01), and both RhoA and ROCK1 mRNA and protein expression levels were significantly higher (P<0.05, P<0.01). Compared with the model group, treatment with Mahuang Xixin Fuzitang (2, 4, 8 g·L-1) for 24 hours resulted in significantly lower expression levels of CD80, CD86, and MHC-Ⅱ (P<0.01), a significantly reduced number of cells migrating to the lower chamber (P<0.05), and significantly decreased levels of CCR7 and CXCR4 (P<0.05, P<0.01). Furthermore, F-actin expression was significantly reduced (P<0.01), and both RhoA and ROCK1 mRNA and protein expression levels were significantly decreased (P<0.05, P<0.01). ConclusionMahuang Xixin Fuzitang can inhibit the migration of DCs in mice, and its mechanism of action may be related to reducing the activity of the Rho/ROCK signaling pathway, thereby affecting changes in the cell cytoskeleton.