Objective To investigate the aassociation of a microRNA-137 (miR-137) polymorphism, single nucleotide polymorphism (SNP) rs1625579, with neurocognitive function in patients with schizophrenia. Methods A total of 250 patients with schizophrenia were included in this study. The positive and negative syndrome scale (PANSS) was used to evaluate patients. The brief assessment of cognition in schizophrenia (BACS) scale was used to determine neurocongnitive functions in patients. Blood samples of patients were collected, and SNaPshot technique was used to compare the neurocognitive functions of different genotypes of rs1625579. Results The genotypes of TT, GT and GG were 221 (88.4%), 28 (11.2%) and 1(0.4%). There was no significant difference in PANSS score between TT genotype carriers and G allele (GG+GT) carriers. The detection of BACS showed that the digit sequencing score was significantly lower in patients with TT genotype than that of G allele (GG+GT) carrier ( P<0.05). There were no significant differences in other scores of BACS evaluation between two groups of patients. Conclusion The miR-137 polymorphism influences the working memory performance of schizophrenic patients in Chinese Han population.

Objective:To construct lentiviral vector which can overexpression miR-137 and produce lentivirus by lentivirus packaging system, and to explore its infection efficiency and expression in HEK293T cells.Methods: miR-137 sequence was chemically synthesized and cloned into lentiviral vector GV209, and the recombinant plasmid containing human miR-137 was obtained and identified.Then miR-137 recombinant plasmid together with two helper plasmids were transfected into HEK293T cells using Lipofectamine 2000.After the HEK293T cells were infected in multiplicity of infection(MOI) 40 for 48 h, the expression of green fluorescent protein (GFP) was observed by fluorescence microscope and the expression level of miR-137 was detected by fluorescence quantitative PCR.Results:The sequencing results showed that the inserted gene sequence was completely consistent with the published human miR-137 gene sequence in GenBank.The GFP was observed in the HEK293T cells infected with miR-137 overexpression lentivirus under fluorescence microscope.The fluorescence quantitative PCR results showed that the expression level of miR-137 in the cells infected with overexpression lentivirus was 12.74 times higher than that in the control cells.Conclusion:The lentivirus containing miR-137 gene is successful packaged, and it could efficiently infect the HEK293T cells.

Objective To investigate the current status of workplace violence among Nursing Staff. Methods The Modified Version of Hospital Workplace Violence Questionnaire was used to investigate 792 nursing staff about their experiences of workplace violence over the past one year in a third-grade Class-A comprehensive hospital in Xi′an city. Results The prevalence of workplace violence among 792 participants was 58.08%(460/792), Outpatient department, Emergency department, Obstetrics and Gynecology department, Pediatrics department were the high-risk areas of workplace violence. Day-shift was the main period of workplace violence occurred. The families of patients, middle-aged, male were the main perpetrators. 72.60%(575/792) of the respondents thought the workplace violence were unavoidable. Correct media orientation (89.33%, 707/792) was considered as the primary measure for preventing workplace violence. Patience explanation (74.13%, 341/460), forbearance (53.04%, 244/460) were the main methods for coping with hospital workplace violence. Grievances (75.38%, 347/460), anger (65.65%, 302/460), part of them even wanted to resign (21.84%, 100/460) after experiencing workplace violence were their feelings. Security patrols (81.63%, 647/792), wards installed cameras (77.43%, 613/792) and bright lights (53.42%, 423/792) in the night work areas were the main measures to prevent workplace violence that the hospital had taken to prevent workplace violence. Conclusions Workplace violence among nursing staff is common. It is suggested that hospitals and the relevant government departments should conduct further intervention research, to formulate feasible administrative riot guiding for reducing the incidence of workplace violence.

Objective:To explore the influence of Shenhong Tongluo Granules in the lipid levels,atherosclerosis plaques and apoptosis in the plaques of atherosclerotic apolipoprotein E (ApoE)-knokout mice,and to clarify the mechanism of Shenhong Tongluo Granules in anti-atherosclerosis.Methods:Forty SPF male mice aged six-week old were randomly divided into normal control group,model group,low dose of traditional chinese medicine (TCM) group and high dose of TCM group (n=10)after fed adaptively for 1 week.The mice in normal control group were fed with normal diet continuously, the mice in other three groups were fed with high fat diet to establish atherosclerosis model,and then the mice in low and high doses of TCM groups were respectively given Shenhong Tongluo Granules (5.06 and 10.12 g·kg-1 · d-1 )by gavage for 6 weeks. The levels of serum total cholesterol (TC),triglycerides (TG),low density lipoprotein cholesterol (LDL-C)and high density lipoprotein cholesterol (HDL-C)of the mice in various groups were measured after the eyeball blood was collected.The aortic arch tissue was separated,and the morphotogy and the areas of atherosclerotic plaques were observed and calculated by HE staining;the apoptosis in plaques of the mice was evaluated by TUNEL method, and the apoptosis index was calculated. The expressions of apoptosis-assoicated gene Bcl-2 and Bax protein were measured by immunohistochemical staining.Results:The serum level of TG in low dose of TCM group was lower than that in model group (P <0.05);the serum levels of HDL-C in low and high doses of TCM groups were lower than that in model group (P <0.05 or P <0.01);the serum levels of TG and HDL-C in high dose of TCM group was higher than that in low dose of TCM group (P <0.05).The areas of atherosclerotic plaques of the mice in low and high doses of TCM groups were significantly smaller than that in model group (P <0.01).The apoptosis index of mice in low and high doses of TCM groups were significantly lower than that in model group (P <0.01);the expression levels of Bcl-2 protein in atherosclerosis plaques of the mice in low and high doses of TCM groups were lower than that in model group,while the expression levels of Bax were significantly higher than that in model group (P <0.05 or P <0.01).Conclusion:Shenhong Tongluo Granules could effectively reduce the serum lipid level of ApoE-/-mice,meanwhile it could inhibit apoptosis by regulating the expressions of Bcl-2 and Bax protein,and then inhibit the progression of atherosclerotic plaques.

Objective:To explore the incidence and epidemiological features of workplace violence among medi-cal staffs in a Third - grade Class - A hospital in Xi'an,and to provide scientific basis for the hospital and relevant health management departments to make workplace violence prevention and control measures. Methods: Using Hospital Workplace Violence Questionnaire, a survey was conducted among medical staffs in a Third - grade Class - A hospital in Xi'an to investigate the occurrence of workplace violence over the past one year. Results:A-mong the 1174 respondents,655 suffered workplace violence in the past one year,with a rate of 55. 79％ ;the vio-lence occurred mainly in day shift and wards;the perpetrators were mainly middle - aged,male and the families of patients;69. 42％ of the respondents thought the workplace violence were unavoidable and 87. 31％ of the respond-ents considered that the top measures that can be taken to prevent the workplace violence was "the correct media o-rientation";the main coping methods of medical staffs were patience explanation and forbearance,and after suffering workplace violence,the medical staffs would feel grievances,anger,declining enthusiasm for work and even didn't want to do medical care. The main measures that the hospital had taken to prevent workplace violence mainly in-cluded the security patrol,installing cameras in wards and keeping light bright at night in working area. Conclu-sions:Workplace violence is common among medical staffs. To prevent and control hospital workplace violence,it is recommended that:① Hospital employ more security personals and should particularly strengthen security work in high - risk period,high - risk departments;②it should strengthen the training of medical staff on the prevention and control of workplace violence and strengthen popularization of the relevant legal knowledge to the client;③it should strengthen the communication and cooperation with media and promote the correct media orientation;④it should smooth the patient feedback channels and timely correct the existing problems.

Objective: To develop an assessment questionnaire for screen based behaviors among primary and secondary school students, so as to provide a basis for comprehensive assessment among the population. Methods: Nineteen experts were invited to take part in this study from August to September 2022. The initial framework and item pool of the assessment questionnaire were developed based on literature review and a series of guidelines and standards issued by the national education and health authorities, as well as relevant domestic and foreign guidelines, and were combined with existing assessment tools that were used to evaluate screen based behavior among these age groups. Experts in related fields were selected for two rounds of Delphi consultation to determine the dimensions, items and corresponding weights of the assessment questionnaire. Results: The response rates from two rounds of consultation were 95.0% and 100.0% respectively, the opinion submission rates were 89.5% and 63.2% respectively, and the authority coefficient ( Cr ) was 0.87. An assessment questionnaire was finally designed, consisting in 44 items and four dimensions, namely screen use type and time, screen use related health behaviors, safety and civilization in screen use, and reasonable arrangement of screen and non screen activities. The coefficient of variation( CV ) of each item ranged from 0.00 to 0.19, and the Kendall s W increased from 0.22 to 0.34( P <0.01). Expert opinions were in agreement and credible. Conclusion The designed assessment questionnaire can be used to comprehensively evaluate screen based behavior among primary and middle school students, and provides a basis for subsequent intervention measures to improve screen based behavior among this population.

Objective:To construct a case management index for acute myocardial infarction based on multidisciplinary collaboration, and to provide guidance for the case management of patients with acute myocardial infarction.Methods:From October 2021 to April 2022, a research group with clinical experience was established to initially formulate an index system for acute myocardial infarction case management based on multidisciplinary collaboration after a literature review. After 2 rounds of Delphi expert correspondence, the items of the case management index system were revised according to the opinions of the expert correspondence.Results:Twenty-two experts were interviewed in the first round, and the effective recovery rate of the questionnaire was 95.45%(21/22); in the second round, 21 experts were interviewed, the effective recovery rate of the questionnaire was 100.00%(21/21). The first and the second round of the expert authority coefficient was 0.896 and 0.912, respectively, the coefficient of variation of each item was 0-0.17, Kendall′s coefficient of concordance was 0.20 ( P<0.01), the average importance value of indexes were 4.43-5.00, and the rate of full marks was 38.1%-100.0%. Finally, an acute myocardial infarction case management index system based on multidisciplinary collaboration was established, including 3 primary indexes and 51 secondary indexes. Conclusions:The case management index constructed in this study is scientific and reliable, closely integrated with clinical practice, and has strong clinical practical value.

Objective:To analyze the variation and characteristics of gene mutation in patients with 6-pyruvoyltetrahydropterin synthase deficiency(PTPSD) in Henan province, and to provide the theoretical basis for early diagnosis, treatment, genetic consultation and prenatal diagnosis of PTPSD.Methods:One thousand nine hundred and six children with hyperphenylalaninemia (HPA) treated in Henan Neonatal Screening Center, the Third Affiliated Hospital of Zhengzhou University from January 1998 to December 2018 were included.Chemiluminescence was used for pheny-lalanine (Phe) detection in blood or dried blood spots.For patients with Phe concentration >120 μmol/L, urine pterin analysis was carried out, and the activity of dihydropteridine reductase (DHPR) was detected.Mutations of the PAH, GCH1, GFRP, PCBD1, PTPS and QDPR in 79 children with tetrahydrobiopterin deficiency(BH4D) were detected by using the high-throughput sequencing.All variations were verified by Sanger sequencing. Results:Among the 1 906 children, 79 cases were diagnosed as BH4D clinically, and they all were PTPSD.The incidence of PTPSD in HPA in Henan was 4.14%.One hundred and fifty-six out of 158 alleles in 79 children were detected, and the detection rate of gene mutation was 98.73%, 30 mutations were identified and most of the variants were located in exons 5(92/156 cases, 58.97%). Variants of c. 259C>T (61/156 cases, 39.10%), c.286G>A (17/156 cases, 10.90%), c.155A>G (13/156 cases, 8.33%) and c. 272A > G (10/156 cases, 6.41%) were more common.Six novel variations were detected, which included c. -77G>T, c.158A>G, c.262C>T, c.207G>A, c.316A>G and c. 332C>G; 38 genotypes had been identified, including 3 homozygous mutations and 33 compound heterozygous mutations.Conclusions:c. 259C>T is the hot-spots gene mutation in Chinese PTPSD patients in Henan province.The identification of 6 new mutations enriches the gene mutation profile.

Objective: To systematic evaluate the real experience of patients after falling during hospitalization and qualitative research on the cognition and demand for fall prevention will provide theoretical basis for patients, their families, medical staff and medical institutions to better carry out fall prevention. Methods: English databases such as PsycINFO, Medline, Embase, CINAHL, Cochrane, PubMed, and Chinese databases such as Chinese biomedical literature database, CNKI, Wanang database were retrieved by computer. Included qualitative studies on the emotional experience of fall of inpatients and their cognition and needs for fall prevention. The retrieval time limit was until November 1, 2018.The literature was evaluated using the quality evaluation criteria for qualitative research (2016) of the JBI evidence-based health care center, and the results were integrated using a pooled integration method. Results: A total of 8 studies were included, and 33 clear research results were extracted. Similar results were summarized and combined to form 7 new categories, which were integrated into 4 results. Results 1: psychological experience of hospitalized patients after falling down. Integration results 2: the causes of falls from the perspective of inpatients. Integration results 3: hospital fall prevention measures and evaluation from the perspective of inpatients. Integration result 4: inpatients expected to receive care from their families and help from medical staff. Conclusion Fall events seriously affect the mental health of patients; Patients′ cognition of falling is affected and changed by many factors. Fall prevention should shift from clinical focus to patient-centered and attach importance to the participation of family members.

8-prenylnaringenin (8-PN) is a potent estrogen with high medicinal values. It also serves as an important precursor for many prenylated flavonoids. Microbial synthesis of 8-PN is mainly hindered by the low catalytic activity of prenyltransferases (PTS) and insufficient supply of precursors. In this work, a SfN8DT-1 from Sophora flavescens was used to improve the efficiency of (2S)-naringenin prenylation. The predicted structure of SfN8DT-1 showed that its main body is comprised of 9 α-helices and 8 loops, along with a long side chain formed by nearly 120 amino acids. SfN8DT-1 mutants with different side-chain truncated were tested in Saccharomyces cerevisiae. A mutant expressing the truncated enzyme at K62 site, designated as SfND8T-1-t62, produced the highest 8-PN titer. Molecular docking of SfN8DT-1-t62 with (2S)-naringenin and dimethylallyl diphosphate (DMAPP) showed that K185 was a potentially crucial residue. Alanine scanning within a range of 0.5 nm around these two substrates showed that the mutant K185A may decrease its affinity to substrates, which also indicated K185 was a potentially critical residue. Besides, the mutant K185W enhanced the affinity to ligands implied by the simulated saturation mutation, while the saturated mutation of K185 showed a great decrease in 8-PN production, indicating K185 is vital for the activity of SfN8DT-1. Subsequently, overexpressing the key genes of Mevalonate (MVA) pathway further improved the titer of 8-PN to 31.31 mg/L, which indicated that DMAPP supply is also a limiting factor for 8-PN synthesis. Finally, 44.92 mg/L of 8-PN was produced in a 5 L bioreactor after 120 h, which is the highest 8-PN titer reported to date.
Dimethylallyltranstransferase/metabolism* ; Flavonoids/metabolism* ; Molecular Docking Simulation ; Prenylation ; Saccharomyces cerevisiae/metabolism* ; Sophora/metabolism*