1.Analysis of three Chinese pedigrees affected with Hereditary factor Ⅶ deficiency due to compound heterozygous variants of F7 gene
Longying YE ; Huilin CHEN ; Zhengxian SU ; Ke ZHANG ; Lihong YANG ; Yanhui JIN ; Mengzhen WEN ; Mingshan WANG
Chinese Journal of Medical Genetics 2024;41(4):393-398
Objective:To analyze the types of genetic variants and clinical characteristics of three Chinese pedigrees affected with Hereditary coagulation factor Ⅶ (FⅦ) deficiency.Methods:Three pedigrees who had visited the First Affiliated Hospital of Wenzhou Medical University between December 2021 and October 2022 were selected as the study subjects. Prothrombin time (PT), activated partial thromboplastin time (APTT) and FⅦ activity (FⅦ: C) were measured in the three probands and their pedigree members. All exons and their flanking sequences were analyzed by direct sequencing, and candidate variants were verified by reverse sequencing. The corresponding variant loci in the family members were also analyzed. ClustalX-2.1-win was used to analyze the conservation of the variant loci. Varcards and Spcards online software was used to predict the pathogenicity of the variants. Pymol software was used to analyze the changes in protein structure and molecular forces.Results:Three cases of hereditary FⅦ deficiency were found to have decreased FⅦ: C, prolonged PT and normal APTT. Genetic analysis identified a total of four genetic variants, and all three probands had harbored compound heterozygous variants of the F7 gene, including p. Cys389Gly and p. His408Gln in proband 1, p. Cys389Gly and IVS6+ 1G>T in proband 2, and IVS6+ 1G>T and IVS1a+ 5G>A in proband 3. Conservation analysis showed that both the p. Cys389 and p. His408 loci are highly conserved among orthologous species. Analysis with Varcards and Spcards software showed that these variants were pathogenic. Protein modeling analysis showed that the p. Cys389Gly and p. His408Gln variants may result in altered protein structures and changes in hydrogen bonds. Conclusion:The clinical manifestations of the three FⅦ-deficient probands may be attributed to the compound heterozygous variants of p. Cys389Gly/p.His408Gln, p. Cys389Gly/ⅠⅤS6+ 1G>T and ⅠⅤS6+ 1G>T/ⅠⅤS1a+ 5G>A of the F7 gene. The combination of the three compound heterozygous variants was unreported previously.
2.Research progress of unplanned readmission in patients after left ventricular assist device implantation
Peiye SHEN ; Lan LAN ; Xinyi SHEN ; Jiaqi WANG ; Junhui WANG ; Xiaomin CHEN ; Jinlan YAO ; Dongping XU ; Zhengxian QIAN
Chinese Journal of Nursing 2024;59(14):1719-1725
Unplanned readmission is one of the adverse outcomes of patients after left ventricular assist device implantation,which seriously affects the prognosis of patients.This article reviews the incidence,causes,influencing factors and intervention measures of unplanned readmission of patients after left ventricular assist device implantation,in order to improve the attention of nursing staff,early identify high-risk groups of unplanned readmission of patients after left ventricular assist device implantation and provide references for formulating personalized intervention measures.
3.Prefrontal cortex activation in women with perimenopausal depression: a functional near-infrared spectroscopy study
Cancan YU ; Jiao SHI ; Zhengxian XU ; Xiaodong SONG ; Ziyi WU ; Xingchen ZHOU ; Mengyang WANG ; Dan WANG ; Shangjie CHEN ; Min WANG
Chinese Journal of Behavioral Medicine and Brain Science 2023;32(10):894-900
Objective:To explore the relative concentration changes of oxygenated hemoglobin (Oxy Hb) in the prefrontal cortex (PFC) and brain region activation during emotional face recognition tasks in women with perimenopausal depression.Methods:From February to April 2023, forty perimenopausal women were recruited, including 20 women with perimenopausal depression (experimental group) and 20 women with non-perimenopausal depression (control group). All participants were evaluated by the modified Kupperman score, 24-item Hamilton depression scale (HAMD-24), and patient health questionnaire (PHQ-9). Functional near-infrared spectroscopy (fNIRS) equipment was used to measure the relative concentration of Oxy-Hb in the PFC in two groups under the emotional face recognition task. Statistical analysis was performed by SPSS 26.0 software. Data were analyzed by a t-test, rank sum test, and Pearson correlation. Results:There were statistically significant differences in the results of the modified Kupperman score((23.20±3.66), (18.10±1.28)), HAMD-24((15.95±5.47), (3.35±1.84)), and PHQ-9(7.00(5.00, 10.75), 1.50(1.00, 3.00)) scales between the the experimental group and control group ( P<0.05). There was a positive correlation between the modified Kupperman score and the HAMD-24 score in the experimental group ( r=0.685, P=0.01). The reaction time of the experimental group in identifying negative and neutral emotional faces was statistically significant compared to the control group( t=4.01, 4.80, both P<0.05). Compared with identifying neutral emotions, PFC activation was stronger in the experimental group and control group when identifying negative emotions ( P<0.05). The PFC activation in the experimental group was stronger than that in the control group when identifying negative emotions ( P<0.05). There was no statistically significant difference in the activation level between the two groups when identifying neutral emotions ( P>0.05). Conclusion:Women with perimenopausal depression exhibit specificity in emotional processing, with increased PFC activation when identifying negative emotions, impaired emotional processing function of PFC, and dysfunction of aerobic metabolism.
4.Application of cell transfer technique in the diagnosis of fine needle aspiration cytology
Di CUI ; Zhengxian CHEN ; Longteng LIU ; Dongge LIU ; Lan CHEN
Chinese Journal of Pathology 2021;50(6):615-619
Objective:To study the application of cell transfer technology to solve the problem of the limited number of fine needle aspiration cytology (FNAC) smears for various immunocytochemistry (ICC) staining and other auxiliary tests, and to enhance accurate cytological diagnosis.Methods:Thirty-four cases of FNAC smears from January 2020 to April 2020 in the Department of Pathology of Beijing Hospital were collected for investigation of the cell transfer technique. The materials in the most cell smear were divided and transferred to several glass slides. After de-staining, the recipient slides were stained with EnVision ICC. The technique was validated by comparing the consistency of the ICC of transferred cell smears and the corresponding immunohistochemical (IHC) staining on biopsies.Results:There were a total of 180 cell transfer slides from 34 cases, of which 174 had the same cell morphology, size and structure as the original smears, with the success rate of cell transfer of 96.7% (174/180). Totally 174 ICC stains were performed on the successfully transferred cell smears, of which 153 smears had available corresponding IHC staining of histologic specimens. Of these, 148 showed concordance between ICC staining and the IHC staining. Cells were successfully transferred in 96.7 % (148/153) of the cell sheets, keeping the same morphology and structure as compared to their original smears. The diagnosis of all 34 FNAC cases was the same to that of their corresponding pathology on biopsies with 100 % concordance.Conclusions:The cell transfer technique is a simple and effective way to make full use of diagnostic cells on a cell smear, and is valuable for accurate cytological diagnosis.
5.Quantitative MRI of SD-rat adipose derived stem cells labeled with a new type paramagnetic nanoparticles in rats in vivo
Qi XIE ; Jianyi TANG ; Weiqiong MA ; Baolin ZHANG ; Zhengxian LEI ; Huixian CHEN ; Minyi WU ; Dingxuan ZHANG
Chinese Journal of Interventional Imaging and Therapy 2018;15(5):301-305
Objective To explore the feasibility of tracking migration and distribution of SD-rat adipose derived stem cells (ADSCs) labeled with Polyethylene Glycol/Polyehthyleneimine modified superparamagnetic iron oxide (PEG/PEI-SPIO) in rats with chronic cerebral ischemia using MRI.Methods Thirty female SD rats underwent permanent occlusion of bilateral common carotid arteries 6 months were divided into PEG/PEI-SPIO labeled group and unlabeled group (each n =15).Labeled or unlabeled ADSCs suspension was injected into the right ventricle of rats in two groups,respectively.MR scans were performed at the 7th,14th and 21st day after transplantation for each 5 rats.T2 value of T2mapping sequence in hippocampus,cortex and cerebellum were measured.Then the rats were scarified,and the brains were obtained,and Prussia dyeing was performed.Under high magnification,blue dye cells at each time points and brain area were counted.T2 values and blue dye cells were statistically analyzed.Results Class round hypointensity areas were detected in temporol-parietal cortex and hippocampus in both groups on T2WI,T2* WI and SWI.T2 value of the right temporolparietal cortex and hippocampus in the labeled group was shorter than those of the unlabeled group on the 14th day after transplantation (P=0.013,0.045).T2 value of the right temporol-parietal cortex in the labeled group was shorter than that of the unlabeled group on the 21st day after transplantation (P=0.007).The number of blue dye cell of the right temporol-parietal cortex on the 14th and 21th day,hippocampus on the 14th day in the labeled group were more than those of the unlabeled group after transplantation (P=0.029,0.032,0.043).Conclusion ADSCs labeled with PEG/PEI-SPIO transplanted into lateral ventricle of SD rat could migrate to the damaged areas caused by chronic cerebral ischemia.It is possible to use quantitative MRI to track migration and distribution of ADSCs labeled with PEG/PEI-SPIO in rat brain.
6.Application research of Four Topics method in the clinical ethics training of standardized resident training
Yanxiao CHEN ; Jinkan DU ; Maofeng WANG ; Ruyun HU ; Weiming LI ; Zhengxian YING
Chinese Journal of Medical Education Research 2017;16(2):177-180
Due to the insufficient education of medical ethics and tending to medical moral educa-tion, the residents lack the ability to make ethical decisions. Therefore, we applied Four Topics method in the clinical ethics training of residents. The clinical ethics training was divided into three stages, and each stage had different training content and objectives. Dongyang People's Hospital adopted the form of lectures and panel discussions. During the group discussion, the group leader was in charge of case preparation, which came from clinical practice, and then all members applied the Four Topics method to analyze and discuss the ethical conflicts, and make the ethical decision. Through this process, residents' ability to solve ethical problems in clinical practice was enhanced.
7.Building of the evaluation index system of clinical key disciplines at county level hospitals in Chengdu city
Zhengxian GOU ; Xing YAN ; Qixun CHEN ; Jin CHEN ; Jianlin YOU ; Xiao XIA ; Hongchuan LIU ; Jingui LI ; Chuan PU
Chinese Journal of Hospital Administration 2015;(3):185-189
Objective To build a clinical key disciplines evaluation index system for county level hospitals in Chengdu city.Methods Literature meta analysis, focus group discussion, expert consultation method, boundary value method, brainstorming and hierarchy analysis method were comprehensively used.Results The clinical key disciplines evaluation index system for county level hospitals in Chengdu city comprises 5 level-1 indexes,1 6 level-2 indexes,47 level-3 indexes.Among the level-1 indexes,service capacity,medical quality,technical personnel,scientific research and education, and foundation of specialty was 0.474 6,0.202 7,0.148 2,0.097 7,0.076 8 respectively.Conclusion The clinical key disciplines evaluation index system for county level hospitals in Chengdu city is scientific, guiding and practical,which can be used to evaluate the status of the clinical key disciplines for county level hospitals in Chengdu city.
8.VEGF 165 and HGF Improving Cardiomyocyte Proliferation in Experimental Porcine After Myocardial Infarction
Xuesong QIAN ; Fenghui AN ; Pu LIU ; Bo CHEN ; Chunjian LI ; Liansheng WANG ; Zhijian YANG ; Zhengxian TAO
Chinese Circulation Journal 2014;(8):634-638
Objective: To investigate the mechanism of vascular endothelial growth factor ( VEGF)165 and hepatocyte growth factor (HGF) improving cardiomyocyte proliferation in experimental porcine after myocardial infarction (MI).
Methods: The MI model was established by left anterior descending artery ligation in 15 male pigs and the animals were divided into 3 groups, n=5 in each group. Control group, the pigs received normal saline injection at the infarct and peri-infarct zones. VEGF group, the pigs received (1×1010 ) pfu of viral titers of Ad-VEGF injection. HGF group, the pigs received (1×1010 ) pfu of viral titers of Ad-HGF injection. The myocardial perfusion and cardiac function were examined by SPECT, the protein expressions of VEGF165 and HGF were measured by Western blot analysis, cardiomyocyte proliferation was analyzed by immunolfuorescence and immunoprecipitation method.
Results: ① Compared with Control group, the expressions of VEGF165 and HGF were higher at the infarct and peri-infarct zones in both treatment groups; ② Both treatment groups had better cardiac function and myocardial perfusion; ③ Both treatment groups had improved cardiomyocyte proliferation at the infarct and peri-infarct zones.④VEGF165 promoted cardiomyocyte proliferation via p27 pathway;⑤HGF promoted cardiomyocyte proliferation via p21 and p27 pathways.
Conclusion: VEGF165 and HGF could improve myocardial perfusion and function in experimental porcine after MI, VEGF165 and HGF promote cardiomyocyte proliferation via different pathways.
9.Education of evidence-based medicine in research practice in primary hospital
Weiying ZHANG ; Zhengxian YING ; Maofeng WANG ; Yanxiao CHEN ; Xiang CHEN ; Weimin LI
Chinese Journal of Medical Science Research Management 2014;27(6):712-715
Education of evidence-based medicine in clinical research is important in enhancing primary hospital clinical research capacity and quality.Dongyang People's Hospital of Zhejiang Province has carried out evidence-based medicine education and training,and greatly improved the performance of clinical research and development of scientific researchers.
10.Comparison of different susceptibility testing methods of tigecycline against imipenem-resistant Acinetobacter baumannii
Jingjing CHEN ; Liyan ZHANG ; Zhengxian CHEN
The Journal of Practical Medicine 2014;(12):1990-1992
Objective To evaluate the susceptibilities of different testing methods of tigecycline against IRAB. Methods MIC and inhibitory zone diameters of 32 strains of IRAB for tigecyclinc were determined by different testing methods.Data were analyzed by comparing the results from each method to those produced by the reference macro broth dilution method. Results The rates of sensitivity intermediate resistance detected by macro broth dilution method , agardilution , MTS and Vitek-2 instrument , disk diffusion method were as follows , 34.375%, 65.625%, 0%, 3.125%, 81.25%, 15.625%, 75%, 25%, 0%, 78.125%, 21.875%, 0%, 3.125%, 81.25%, 15.625%. Compared with macro broth dilution method ,the key major error rate of other methods was 0% by FDA breakpoints , but the CA and EA rates were less than 90%. Conclusions Tigecycline has good activity against the IRAB, with significant difference in susceptible rate among the different methods.

Result Analysis
Print
Save
E-mail