Improved unilateral puncture PVP based on 3D printing technology for the treatment of osteoporotic vertebral compression fracture / 中国骨伤

OBJECTIVE@#To investigate the clinical effect of unilateral percutaneous vertebroplasty (PVP) combined with 3D printing technology for the treatment of thoracolumbar osteoporotic compression fracture.@*METHODS@#A total of 77 patients with thoracolumbar osteoporotic compression fractures from October 2020 to April 2022 were included in the study, all of which were vertebral body compression fractures caused by trauma. According to different treatment methods, they were divided into experimental group and control group. Thirty-two patients used 3D printing technology to improve unilateral transpedicle puncture vertebroplasty in the experimental group, there were 5 males and 27 females, aged from 63 to 91 years old with an average of (77.59±8.75) years old. Forty-five patients were treated with traditional bilateral pedicle puncture vertebroplasty, including 7 males and 38 females, aged from 60 to 88 years old with an average of(74.89±7.37) years old. Operation time, intraoperative C-arm X-ray times, anesthetic dosage, bone cement injection amount, bone cement diffusion good and good rate, complications, vertebral height, kyphotic angle (Cobb angle), visual analogue scale(VAS), Oswestry disability index (ODI) and other indicators were recorded before and after surgery, and statistically analyzed.@*RESULTS@#All patients were followed up for 6 to 23 months, with preoperative imaging studies, confirmed for thoracolumbar osteoporosis compression fractures, two groups of patients with postoperative complications, no special two groups of patients' age, gender, body mass index (BMI), time were injured, the injured vertebral distribution had no statistical difference(P>0.05), comparable data. Two groups of patients with bone cement injection, bone cement dispersion rate, preoperative and postoperative vertebral body height, protruding after spine angle(Cobb angle), VAS, ODI had no statistical difference(P>0.05). The operative time, intraoperative fluoroscopy times and anesthetic dosage were statistically different between the two groups(P<0.05). Compared with the traditional bilateral puncture group, the modified unilateral puncture group combined with 3D printing technology had shorter operation time, fewer intraoperative fluoroscopy times and less anesthetic dosage. The height of anterior vertebral edge, kyphosis angle (Cobb angle), VAS score and ODI of the affected vertebrae were statistically different between two groups at each time point after surgery(P<0.05).@*CONCLUSION@#In the treatment of thoracolumbar osteoporotic compression fractures, 3D printing technology is used to improve unilateral puncture PVP, which is convenient and simple, less trauma, short operation time, fewer fluoroscopy times, satisfactory distribution of bone cement, vertebral height recovery and kyphotic Angle correction, and good functional improvement.

Mediating role of burnout in relationship between psychological resilience and psychological distress among CDC staff during COVID-19 pandemic / 环境与职业医学

Background The staff in centers for disease control and prevention (CDC) were at a great risk for psychological distress when they were faced with outbreak-related prevention and control work and routine tasks during the COVID-19 period. Psychological resilience and burnout are two key influencing factors on psychological distress. Objective To explore the status and mechanisms of psychological resilience, burnout, and psychological distress among CDC staff. Methods From September to October 2022, a cross-sectional survey was conducted in all CDC staff in Beijing, and 2228 CDC staff from 17 units (including 1 municipality-level CDC and 16 district-level CDCs) participated the questionnaire survey. The basic information questionnaire, Connor-Davidson Resilience Scale (CD-RISC-10) Chinese version, Maslach Burnout Inventory-General Survey (MBI-GS) Chinese version, and the 10-item Kessler Psychological Distress Scale (Kessler10) Chinese version were selected in our study. Mann-Whitney U test or Kruskal-Wallis H test was used to analyze the differences in the scores of psychological resilience, burnout, and psychological distress by demographic and sociological characteristics. The correlations among the three elements were analyzed by Spearman correlation analysis. Potential influencing factors of psychological distress of the CDC staff were evaluated by multiple linear regression. A potential mediating effect of psychological resilience-burnout-psychological distress was analyzed by the mediation package of R 4.2.0, and validated by Bootstrap method. Results Of 2228 questionnaires distributed, 2022 valid questionnaires were collected, and the recovery rate was 90.75%. The median (P25, P75) psychological distress score of CDC staff was 13.00 (8.00, 24.00), and the number of participants with psychological distress levels of 1, 2, 3, and 4 was 358 (17.71%), 546 (27.00%), 362 (17.90%), and 756 (37.39%), respectively. The median (P25, P75) psychological resilience score was 24.00 (20.00, 30.00) and the median (P25, P75) burnout score was 38.00 (25.00, 50.00). The results of the multiple linear regression showed that psychological resilience, burnout, caring for the elderly, having a chronic disease, and monthly income had independent influences on psychological distress (P<0.05), and emotional exhaustion, cynicism, and reduced personal accomplishment (reversed) in the case of burnout had a great effect on psychological distress (P<0.05). After controlling general demographic characteristic variables, total burnout score exerted a partial mediation effect on the relationship between psychological resilience and psychological distress, with a mediation effect value of −0.439 (95%CI: −0.483, −0.397), and a total mediation effect contribution rate of 60.89%. The two dimensions of burnout (emotional exhaustion and cynicism) played a partial mediating role between psychological resilience and psychological distress, with mediating effect contribution rates of 42.44% and 41.41%, respectively. Conclusion Psychological distress among CDC staff in Beijing was prominent during COVID-19. Psychological resilience can act directly on psychological distress or indirectly on psychological distress through burnout. Both emotional exhaustion and cynicism dimensions of burnout have a partial mediating role between psychological resilience and psychological distress. Increasing psychological resilience and decreasing burnout may reduce the occurrence of psychological distress.

Epidemiological characteristics of chronic obstructive pulmonary disease and influencing factors of acute exacerbation in Ma'anshan Area in 2020 - 2022 / 公共卫生与预防医学

Objective To study the epidemiological characteristics of chronic obstructive pulmonary disease (COPD) in Ma'anshan area and analyze the influencing factors of acute exacerbation. Methods The clinical data of 1 676 patients with COPD who visited the Department of Respiratory Medicine of Deyu Medical Ma'anshan General Hospital from 2020 to 2022 were retrospectively analyzed. The patients were divided into acute exacerbation group and stable group according to whether they had acute exacerbation or not，and the general information, severity of COPD, previous pulmonary infection and combined hypoproteinemia were compared between the two groups. Logistic regression was used to analyze the influencing factors of acute exacerbation. Results A total of 1 676 COPD patients were mainly male (58.17%) and ≥ 46 years old (82.58%), of which the incidence of acute exacerbation of chronic obstructive pulmonary disease (AECOPD) was 78.82%. Logistic regression analysis showed that male sex , ≥46 years of age, smoking >400 cigarettes/year, occupational exposure to dust, severe and very severe COPD, recurrent new coronavirus infections, combined cardiovascular disease, or hypoproteinemia were risk factors for acute exacerbations in COPD patients. Conclusion Nearly 80% of COPD patients in Ma'anshan area have previously experienced acute exacerbations, and prevention and treatment cannot be ignored. Strengthening the education and prevention of key populations can effectively reduce the incidence of AECOPD and improve the overall prognosis of COPD patients.

Cinobufacini inhibits the metastasis of colorectal cancer by regulating polarization of M2 macrophages / 安徽医科大学学报

Objective To investigate the effect of cinobufacini on inhibiting colorectal cancer metastasis by regula-ting the polarization of M2 macrophages.Methods THP-1 was induced into M0 type macrophages.The condi-tioned medium of HCT116 cells was collected to stimulate M0 type macrophages.The polarization of M2 type mac-rophages was observed by flow cytometry,real-time quantitative PCR and ELISA experiments.The conditioned me-dium of M0 type macrophages and HCT116-Mφ cells was collected to stimulate HCT116 cells.The ability of migra-tion and invasion was observed by wound healing assay and Transwell assay.The effect of cinobufacini on the via-bility of HCT116 cells was detected by CCK-8 assay.The conditioned medium of HCT116 and HCT116+cinobufa-cini was collected to stimulate M0 type macrophages.The polarization of M2 type macrophages was observed by flow cytometry,real-time quantitative PCR and ELISA experiments.The conditioned media of HCT116-Mφ cells and(HCT116+cinobufacini)-Mφ cells were collected to stimulate HCT116 cells.The changes of migration and inva-sion ability were observed by wound healing assay and Transwell assay.Results After stimulation of M0 type mac-rophages in HCT116 cell conditioned medium,the morphology of M0 macrophages turned into fusiform cells,the proportion of CD11b+CD206+cells increased,and the expression of M2 macrophage markers IL-10 and TGF-β in-creased.The migration and invasion ability of HCT116 cells were significantly enhanced after stimulation in the conditioned medium of HCT1 16-Mφ cells.After the addition of cinobufacini,not only the polarization proportion of M2 macrophages decreased,but also the metastatic effect mediated by M2 macrophages was inhibited.Conclusion HCT116 cells can induce the polarization of M2 macrophages,while cinobufacini can inhibit the tumor metastasis mediated by M2 macrophages by inhibiting the polarization of M2 macrophages.

Analysis on clinical efficacy of anterior cervical Hybrid surgery and posterior cervical expansive open-door laminopasty for multilevel cervical spondylotic myelopathy / 吉林大学学报(医学版)

Objective:To analyze the efficacy of anterior cervical Hybrid surgery and posterior cervical expansive open-door laminoplasty(EODL)in the treatment of multilevel cervical spondylotic myelopathy,and to discuss the selection of surgical methods for the patients with multilevel cervical spondylotic myelopathy.Methods:The retrospective analysis was conducted of 70 patients with multilevel cervical spondylotic myelopathy who underwent surgery at Affilated Beijing Traditional Chinese Medicine Hospital of Capital Medical University from July 2017 to July 2020.Based on the different surgical methods,the patients were divided into anterior group(n=35)and posterior group(n=35).The patients in anterior group underwent Hybrid surgery[anterior cervical discectomy and fusion(ACDF)combined with artificial cervical disc replacement(ACDR)],and the patients in posterior group underwent EODL.The hospitalization time,operation time,intraoperative blood loss,and postoperative drainage volume of the patients in two groups were recorded;the efficacy was evaluated by Japanese orthopaedic association(JOA)score,JOA improvement rate,neck disability index(NDI),visual analogue scale(VAS)for pain,and postoperative satisfaction score;the complications of the patients in two groups after surgery were recorded.Results:Compared with posterior group,the intraoperative blood loss,postoperative drainage volume,hospitalization time,and operation time of the patients in anterior group were significantly decreased(P<0.01),and the preoperative score had no significant difference(P>0.05).At the final follow-up after surgery,compared with posterior group,the JOA score and JOA improvement rate of the patients in anterior group were significantly increased(P<0.01),and the NDI score and VAS score were significantly decreased(P<0.01).Compared with before surgery,the JOA scores of the patients in two groups at the final follow-up after surgery were increased(P<0.01),and the NDI and VAS scores were significant decreased(P<0.01).The postoperative satisfaction of the patients in two groups was high based on the postoperative satisfaction score.There was no significant difference in the incidence of postoperative complication of the patients between two groups(P>0.05).Conclusion:Both the anterior cervical Hybrid surgery and EODL achieve the satisfactory results in the treatment of multilevel cervical spondylotic myelopathy.Hybrid surgery has the advantages of less bleeding and shorter surgery time,and the most suitable surgical method should be chosen clinically based on the actual situation of the patients.

Clinical observation of hydromorphone combined with ropivacaine for anterior serratus plane block to relieve acute pain after breast cancer surgery / 重庆医学

Objective To evaluate the efficacy of hydromorphone combined with ropivacaine for serra-tus anterior plane block(SAPB)in acute pain after breast cancer surgery.Methods A total of 58 patients un-dergoing breast cancer surgery were divided into the hydromorphone combined with ropivacaine block group(group HR)and the Ropivacaine block group(group R)by the random number table method.Before surgery,the patients in the two groups were treated with SAPB.The patients in both groups underwent SAPB before surgery,and the dosage of opioids during surgery,the scores of Numeric Rating Scale(NRS)at 30 min,2 h,4 h,6 h,12 h,24 h and 48 h after surgery,the perioperative indicators related to block and the incidence of chro-nic pain after surgery were recorded.Results Compared with group R,the resting NRS score at 30 min,2 h,12 h,24 h and 48 h after surgery and exercise NRS score at 12 h,24 h and 48 h after surgery in group HR were decreased(P＜0.05),and after 12(0 vs.31.0％,P=0.020),24(27.6％vs.65.5％,P=0.040)and 48 h(6.9％vs.37.9％,P=0.005),the incidence of moderate and severe pain during exercise decreased.The pa-tients in group HR got out of bed earlier than those in group R[20(18,23)h vs.24(20,27)h,P=0.021].Conclusion Hydromorphone combined with ropivacaine SAPB can reduce the NRS score after breast cancer surgery,reduced the incidence of moderate to severe pain,and shorten the time for patients to get out of bed.

Implicit and explicit measures of loyalty assessment among military cadets / 陆军军医大学学报

Objective To explore the relevant relationship and specificity between the implicit and explicit loyalty of military cadets in order to provide a theoretical basis and objective indicators for a more comprehensive and objective assessment for individual loyalty.Methods E-Prime 2.0,a classic implicit association paradigm was employed to construct an implicit association loyalty test for 64 military cadets.Simultaneously,an explicit loyalty measurement was conducted using the Chinese Military Personnel Loyalty Scale.Results ① Significant implicit effect was observed in the loyalty assessment of military cadets,indicating a general tendency to perceive higher levels of personal loyalty and lower levels of loyalty to external entities.② Explicit loyalty assessment revealed that the participants had the highest loyalty score towards the Party,the Nation,and the People(4.79±0.34),followed by the loyalty score to their profession(4.38±0.53),and the relatively lower loyalty score towards the unit and leaders(4.03±0.83).Among the 3 dimensions of loyalty,the normative loyalty score ranked highest,while continuance loyalty score took lower.③ There were no correlations among the scores of loyalty to the Party,the Nation,and the People(r=-0.030,P=0.823),to the profession(r=-0.047,P=0.728),to the unit(r=0.050,P=0.710),or to the leaders(r=0.043,P=0.749).Conclusion The implicit effect in the loyalty assessment is significant in military cadets,and there is no significant correlation between explicit and implicit loyalty measurements.Thus,we cannot rely solely on explicit measurements to assess their loyalty attitudes.

miR-139-5p enhances the inhibition effect of metformin on cell proliferation of pancreatic cancer cell line PANC-1 cultured in normal-glucose medium / 基础医学与临床

Objective To investigate the effects of metformin(Met)on the proliferation of pancreatic cancer cells under different glucose concentration culture conditions,and to find the potential role of miR-139-5p in the process.Methods PANC-1 cells were treated with different concentrations of metformin(0/5/10/20 mmol/L)in 25 mmol/L(high-glucose group,HG)or 5 mmol/L(normal-glucose group,NG)glucose culture,cell proliferation,apoptosis,migration and cell cycle were detected after 48 h.The expression of miR-139-5p was quantitatively detected by RT-qPCR,and the miR-139-5p mimics were transfected into PANC-1 cells to clarify the role of miR-139-5p.Results Metformin inhibited the proliferation,promoted apoptosis,and induced S phase and G2/M phase arrest of PANC-1 cells under in high glucose and normal glucose culture conditions,and its anti-proliferation and pro-apoptosis effects were more significant in the normal glucose groups.The expression of miR-139-5p was up-regu-lated by metformin treatment in normal but not in high glucose culture.Further studies showed that miR-139-5p mimics inhibited of PANC-1 cells proliferation without metformin pre-incubation and enhanced the anti-prolifera-tion effect of 5 mmol/L metformin.The pro-apoptotic effect of 10 mmol/L metformin in normal glucose culture conditions.Conclusions In normal-glucose culture conditions,metformin can inhibit proliferation,induce apop-tosis and cell cycle arrest of PANC-1 cells more significantly than in higher-glucose culture,which may be partly related to the up-regulation of miR-139-5p.

Clinical efficacy of transcatheter arterial chemoembolization combined with lenvatinib and camrelizumab in the treatment of advanced hepatocellular carcinoma / 介入放射学杂志

Objective To evaluate the safety and efficacy of transcatheter arterial chemoembolization(TACE)combined with lenvatinib and camrelizumab in the treatment of advanced hepatocellular carcinoma(HCC).Methods The clinical data of a total of 63 patients with advanced HCC,who received TACE combined with lenvatinib and camrelizumab(triple therapy)or TACE combined with lenvatinib(dual therapy)at the Jingmen Municipal People's Hospital of China between April 2020 and December 2021,were retrospectively analyzed.Triple therapy group had 30 patients,and dual therapy group had 33 patients.The post-treatment tumor response,disease progression-free survival(PFS),overall survival(OS),and the incidence of adverse drug reactions were recorded.Results The median follow-up period of the two groups was 14 months(range of 4-26 months).Compared with the dual therapy group,in the triple therapy group the objective response rate(ORR)was remarkably higher(83.3%vs.57.6%,P=0.026),the disease control rate(DCR)was obviously higher(93.3%vs.69.7%,P=0.039),the median PFS was significantly longer(8.0 months vs.5.0 months,P＜0.01),and the median OS was strikingly longer(24.0 months vs.12.0 months,P=0.004).No statistically significant difference in the incidence of adverse drug reactions existed between the two groups(P＞0.05).Conclusion For the treatment of advanced HCC,TACE combined with lenvatinib and camrelizumab is clinically safe and effective.(J Intervent Radiol,2024,32:57-62)

Clinical evaluation of extracorporeal cardiopulmonary resuscitation in adult sudden cardiac death / 中华急诊医学杂志

Objective:To summarize the experience and effect of extracorporeal cardiopulmonary resuscitation (ECPR) on the treatment of sudden cardiac death (SCD).Methods:The data of 120 adults with SCD-ECPR in emergency department of the first affiliated hospital of Nanjing Medical University from April 2015 to April 2023 were retrospectively analyzed. The patients were grouped by Survival/death at 90 days, OHCA/IHCA (out-of-hospital/in-hospital cardiac arrest), with/without acute myocardial infarction (AMI) and divided according to 60 min of the time from cardiac arrest to extracorporeal membrane oxygenation (ECMO) initiation (CA-Pump On time). Age, sex, Charlson comorbidity index, IHCA/OHCA, initial rhythm, no-flow time, CA-Pump On time, ECMO evacuation success rate, 90-day survival rate, ECMO treatment time were analyzed.Results:①Total of 114 adult patients with SCD-ECPR were enrolled, and 45 (39.5%) patients survived at 90 days, of whom 40 (88.9%) patients had good neurological outcomes.②Age and no-flow time were significantly lower in the 90-day survival group than that in death group, and the proportion of IHCA and shockable initial rhythm was higher. ③The no flow time in IHCA group was significantly lower than that in OHCA group, and the 90-day survival rate was higher. ④OHCA and regional interhospital transport prolonged CA-Pump On time and reduced the 90-day survival rate. ⑤The AMI group was older with a higher Charlson comorbidity index, and the 90-day survival rate was significantly lower than that in non-AMI group.Conclusions:ECPR improves the prognosis of patients with SCD, there are high benefits in patients with long healthy life expectancy, IHCA, shockable initial rhythm, and short no flow time. The smooth life-saving chain of SCD-ECPR improves survival rate, by screening high benefit candidates in patients with OHCA, delayed initiation of ECPR or requiring interhospital transport, despite CA-Pump On time > 60 min, there is still survival potential.

The major adverse kidney events in acute myocardial infarction with extracorporeal cardiopulmonary resuscitation / 中华急诊医学杂志

Objective:To investigate the major adverse kidney events (MAKE) in acute myocardial infarction (AMI) with extracorporeal cardiopulmonary resuscitation (ECPR).Methods:The data of 75 patients with AMI-ECPR in Emergency Medicine Department of the First Affiliated Hospital of Nanjing Medical University from April 2015 to April 2023 were retrospectively analyzed. The patients were grouped by survival/death at 90 days, with/without renal replacement therapy (RRT), and whether to initiate RRT because of acute kidney injury (AKI). age, sex, Charlson comorbidity index, OHCA/IHCA (out-of-hospital/in-hospital cardiac arrest), initial rhythm, Gensini score, ECPR initial blood gas pH and lactate value, no-flow time, time from cardiac arrest to extracorporeal membrane oxygenation (ECMO) initiation (CA-Pump On time), ECMO and RRT treatment time, 90-day survival rate were analyzed. Moreover, the renal function of the survivors was followed up.Results:① Total of 68 AMI-ECPR patients were enrolled, 22 (32.4%) patients survived at 90 days, 54 (79.4%) combined with RRT, and 48 (70.6%) MAKE within 90 days. ②Compared with the death group, the 90-day survival group had a higher proportion of initial shockable heart rhythm, a lower Gensini score, a higher ECPR initial blood gas pH and a lower lactic acid value. ③The severity of coronary artery disease, ECPR initial acidosis and hyperlactacemia in the RRT group was significantly higher than that in the non-RRT group, and all the non-RRT group patients survived. ④ There was no difference between the AKI-RRT group and the non-AKI-RRT group. Of 21 patients with stage 1 AKI initiating RRT, 5 survived, one of them still needs RRT for 90 days, and 7 patients with stage 2 to 3 AKI initiating RRT died.Conclusions:The 90-day MAKE rate in AMI-ECPR patients was as high as 70.6%, and the 90-day renal insufficiency rate in AMI-ECPR survivors with AKI was as high as 20.0%. Active initiation of RRT to avoid AKI or early initiation of RRT may improve the prognosis of AMI-ECPR patients.

Differential analysis of DNA methylation combined with gene expression in patients with pulmonary embolism / 中华急诊医学杂志

Objective:To screen genetic and epigenetic expression differences associated with pulmonary embolism through integrated bioinformatics analysis.Methods:Four patients with pulmonary embolism and healthy physical examination in the Third Affiliated Hospital of Xinjiang Medical University in 2019 were selected as the research objects, using high-throughput sequencing technologies and methylation chip technology to detect, screening and integrated peripheral blood difference genomes and the epigenome data to identify the pathogenesis of pulmonary embolism caused by methylation of drive and differentially expressed genes, GO and KEGG enrichment analysis were performed.Results:Coexpression analysis of DNA methylation and gene expression data between the pulmonary embolism group and the healthy control group showed that differential methylation in the upstream region of genes was negatively correlated with gene expression. Among them, 8 significantly methylated genes in the upstream region of genes were screened out, and independent sample t-test and Pearson correlation analysis were done. In the pulmonary embolism group, there were 6 significant methylated genes of TSS1500, namely TSPO2, C1QA, AQP1, TNFSF9, MIA and STAB1, and the differential expression multiple log2FC of corresponding genes was 1.298, 1.629, 1.024, 2.746, 2.539, 1.060, respectively. The correlation between gene expression and gene methylation were -0.908, -0.900, -0.824, -0.784, -0.783, -0.779, respectively, and the methylation differences between the two groups were -0.049, -0.053, -0.048, -0.057, -0.050, respectively. -0.053 ( P < 0.05). There were three significantly methylated genes in the TSS200 region, namely TSPO2, SLC9A, and SIGLEC1. The gene expression differential multiple log2FC was 1.298, -2.252, and 1.866, respectively. The correlation between gene expression and gene methylation was -0.860, -0.774, and -0.739, respectively. The methylation difference between the two groups was -0.051, 0.027, -0.048 ( P < 0.05). In the pulmonary embolism group, 7 genes, including TSPO2, C1QA, AQP1, TNFSF9, MIA, STAB1 and SIGLEC1, showed hypomethylation and high expression in the TSS region. SLC9A3 gene showed high methylation and low expression. In the analysis of GO function, significant enrichment was obtained in complement activation, immune response and activation protein cascade. In the KEGG signaling pathway, the immune system, bacterial infection, and signaling molecules and interactions are significantly enriched, thereby regulating the occurrence of pulmonary embolism. Conclusions:Based on the combined analysis of DNA methylation and gene expression, a new idea of the occurrence and development of pulmonary embolism has been found, which can be further studied in the future.

Research Progress of Iron Death in Cardiomyopathy / 昆明医科大学学报

Cardiomyopathy is a group of heterogeneous myocardial diseases with a variety of specific phenotypes that can lead to cardiovascular death or progressive heart failure in severe cases.Because of the severity and complexity of these diseases,the search for new regulatory mechanisms to prevent and treat cardiomyopathy is particularly urgent.Iron death is a form of programmed cell death that differs from other forms of iron dependence and is characterized by the accumulation of iron-dependent lipid peroxides.Studies have shown that iron death can be involved in the occurrence and progression of cardiomyopathy through different signaling pathways.Therefore,targeted regulation of iron death is a new strategy to prevent cardiomyopathy.In this paper,the mechanism of iron death and its important role in cardiomyopathy were reviewed to find the potential relationship between iron death and cardiomyopathy and provide more ideas for the treatment of various cardiomyopathies in the future.

circ_HIPK3 regulates function and morphology of Aβ induced hippocampal neurons by targeting miR-381-3p/ZNF217 axis / 天津医药

Objective To analyze the influence of cyclic RNA homologous domain interacting protein kinase 3(circ_HIPK3)on function and morphology of myloid β-protein(Aβ)induced hippocampal neurons by targeting miR-381-3p/zinc finger protein 217(ZNF217)axis.Methods Hippocampal neurons of neonatal rats were prepared and divided into the control group,the Aβ group,the si NC1 group,the si HIPK3 group,the si HIPK3+inhibitor NC group,the si HIPK3+miR-381-3p inhibitor group,the si HIPK3+miR-381-3p inhibitor+si NC2 group and the si HIPK3+miR-381-3p inhibitor+si ZNF217 group.Except the control group,all the other groups were modeled by 40 μmol/L Aβ1～42.qRT-PCR was used to determine the circ of hippocampal neurons circ_HIPK3,miR-381-3p and ZNF217 mRNA levels.Cell morphology was observed by transmission electron microscope,and the survival rate of hippocampal neurons was measured by CCK-8 method.Hochesst 33342 method was used to measure apoptosis of hippocampal neurons.The intracellular Ca2+ fluorescence intensity of hippocampal neurons was detected by flow cytometry.The expression levels of P-Tau,B-cell lymphoma-2(Bcl-2),Bcl-2-associated X protein(Bax),Caspase-3 and ZNF217 proteins in hippocampal neurons were measured by Western blot assay.Double luciferase reporter genes were used to analyze the targeting relationship between miR-381-3p and circ_HIPK3,ZNF217.Results In the control group,the structure of hippocampal neurons was normal,the morphology of nucleus was normal,and there were no pathological changes in mitochondria and endoplasmic reticulum.In the Aβ group,hippocampal neurons showed degenerative changes,abnormal nuclear morphology,membrane invagination,a large number of mitochondria swelling and a large number of lipid droplets vacuoles in cytoplasm.Compared with the Aβ group,the hippocampal neuronal structure was partially restored in the si HIPK3 group.Compared with the si HIPK3 group,the hippocampal neuronal structure was severely damaged in the si HIPK3+miR-381-3p inhibitor group.Compared with the si HIPK3+miR-381-3p inhibitor group,the damage of hippocampal neurons in the si HIPK3+miR-381-3p inhibitor+si ZNF217 group was reduced.Compared with the control group,the circ_HIPK3,ZNF217 mRNA and ZNF217 protein levels,apoptosis rate,Ca2+ fluorescence intensity,P-Tau,Bax,Caspase-3 protein expression of hippocampal neurons were increased in the Aβ group,and the miR-381-3p level,survival rate and Bcl-2 protein expression decreased(P＜0.05).Compared with the Aβ group,the circ_HIPK3,ZNF217 mRNA and ZNF217 protein levels,apoptosis rate,Ca2+ fluorescence intensity,P-Tau,Bax and Caspase-3 protein expression of hippocampal neurons were decreased in the si HIPK3 group,and miR-381-3p level,survival rate and Bcl-2 protein expression increased(P＜0.05).Compared with the si HIPK3 group,the circ_HIPK3,ZNF217 mRNA and ZNF217 protein levels,apoptosis rate,Ca2+ fluorescence intensity,P-Tau,Bax and Caspase-3 protein expression of hippocampal neurons in the si HIPK3+miR-381-3p inhibitor group were increased,and the miR-381-3p level,survival rate and Bcl-2 protein expression decreased(P＜0.05).Compared with the si HIPK3+miR-381-3p inhibitor group,the ZNF217 mRNA and ZNF217 protein levels,apoptosis rate,Ca2+ fluorescence intensity,P-Tau,Bax and Caspase-3 protein expression of hippocampal neurons in the si HIPK3+miR-381-3p inhibitor+si ZNF217 group were decreased,and the survival rate and Bcl-2 protein expression increased(P＜0.05).miR-381-3p targeted and combined with HIPK3 and ZNF217.Conclusion circ_HIPK3 silencing may ameliorate Aβ-induced damage of hippocampal neuronal structure and function by regulating miR-381-3p/ZNF217 axis.

Low-frequency pulsed magnetic field induces classical transient receptor potential channels 1 to relieve lower limb muscle weakness in patients recovering from COVID-19 / 中国组织工程研究

BACKGROUND:Muscle weakness is a common symptom after coronavirus disease 2019(COVID-19)infection and affects the ability to perform daily activities in humans during recovery.Low-frequency pulsed magnetic field stimulation at a strength of 1.5 mT and a frequency of 3 300 Hz can enhance the maximal voluntary contraction and strength endurance of human skeletal muscle by inducing and activating classical transient receptor potential channel 1(TRPC1),which produces a series of pathological support effects on muscle tissue.It has not been studied whether this means will improve muscle weakness in patients recovering from COVID-19. OBJECTIVE:To select the low-frequency pulsed magnetic field for magnetic stimulation of lower limb muscle groups in patients with COVID-19,in order to observe the effect of this stimulation on the improvement of muscle weakness of lower limb muscle groups in patients with COVID-19 during the recovery period. METHODS:Fourteen patients infected with COVID-19(Omicron strain)positive for Innovita COVID-19 Ab Test(Colloidal Gold)and accompanied by muscle weakness were recruited and randomly divided into two groups:a test group receiving magnetic field stimulation and a control group receiving sham treatment,respectively.The total duration of the trial was 3 weeks.The test group was given low-frequency pulsed magnetic stimulation of the lower limbs every 48 hours and the control group was given the same intervention procedure as the test group but with sham stimulation.Patients in both groups were not informed whether the magnetic stimulation apparatus was running or not.Nine sessions were performed in both groups and the changes in the maximum voluntary contraction,explosive leg force and strength endurance of the local muscle groups of the lower limbs were subsequently observed in both groups. RESULTS AND CONCLUSION:Among the eight local muscle groups collected,seven local muscle groups in the test group showed an increase in the maximum voluntary contraction value after 3 weeks of low-frequency pulsed magnetic field stimulation.In the control group,there were only three muscle groups with improvement in the maximum voluntary contraction.The rate of improvement in the anterior and posterior muscle groups of the left leg in the test group was significantly higher than that in the control group.The longitudinal jump height and peak angular velocity of the knee joint in both groups were improved compared with the pre-test measurement,and the elevation rate of jumping height in the test group was higher than that in the control group.Under the fatigue condition,the decline rates of peak angular velocity of the knee joint and jumping height in the test group decreased significantly,while those in the control group did not change significantly.The above data confirmed that the low-frequency pulsed magnetic field stimulation with the intensity of 1.5 mT and frequency of 3 300 Hz could improve the muscle strength of more local muscle groups in the lower limbs of patients with COVID-19 during the recovery period compared with the human self-healing process,and the whole-body coordination ability and functional status based on explosive leg force of the legs could be significantly improved.Therefore,low-frequency pulsed magnetic field stimulation can be used as an effective,non-exercise rehabilitation tool to improve muscle weakness in the lower limbs of patients with COVID-19.

Culture,identification,and differentiation of rabbit pituitary stem cells / 中国组织工程研究

BACKGROUND:The pituitary gland is an important endocrine organ in the body.Certain diseases can cause damage to the pituitary gland,such as pituitary adenoma and abnormal hormone secretion.Pituitary stem cells,due to their self-renewal and multi-directional differentiation potential,are expected to become a new therapeutic approach for repairing damaged pituitary glands. OBJECTIVE:To isolate and culture pituitary stem cells using the suspension cell ball culture method and identify their proliferation and differentiation ability. METHODS:Pituitary stem cells were isolated and cultured from the pituitary gland of newborn New Zealand white rabbits using the suspension cell ball culture method,and their morphological characteristics were observed.Immunofluorescence cytochemistry was used to detect the expression of pituitary stem cell markers SOX2 and Nestin.EdU labeling method was utilized to detect the proliferative ability of pituitary stem cells.After adherent and induced differentiation,the hormone levels in the culture medium were detected by ELISA. RESULTS AND CONCLUSION:Pituitary stem cell spheres could be successfully isolated by the suspension cell ball culture method,with strong proliferative ability.Positive expression of stem cell-specific markers SOX2 and Nestin was found in the cultured cells.After induction and differentiation,adrenocorticotropic hormone,thyroid hormone,growth hormone,luteinizing hormone,follicle-stimulating hormone,and prolactin levels significantly increased in the medium(P<0.001),with strong differentiation ability.

Gut microbiota and drug-associated osteonecrosis:a two-sample Mendelian randomization study / 中国组织工程研究

BACKGROUND:Osteonecrosis due to drugs is a serious adverse reaction occurring after the application of such drugs.Increasing evidence suggests that the gut microbiota composition is associated with osteonecrosis due to drugs.However,the causal relationship of the gut microbiota to osteonecrosis due to drugs is still unclear. OBJECTIVE:To evaluate the potential causal relationship between the gut microbiota and the risk of osteonecrosis due to drugs using the Mendelian randomization method. METHODS:A two-sample Mendelian randomization study was performed using the summary statistics of gut microbiota from the largest available genome-wide association study meta-analysis(n=13 266)conducted by the MiBioGen consortium as well as the summary statistics of osteonecrosis due to drugs obtained from the FinnGen consortium R9 release data(264 cases and 377 013 controls).Inverse variance weighted,MR-Egger,weighted median,weighted model and simple model were used to examine the causal association between gut microbiota and osteonecrosis due to drugs.Sensitivity analysis was used to test whether the results of the Mendelian randomization analysis were reliable.Reverse Mendelian randomization analysis was performed on all the bacteria as an outcome for effect analysis and sensitivity analysis. RESULTS AND CONCLUSION:Inverse variance weighted estimates suggested that Lentisphaerae(phylum),Lentisphaeria(class),Melainabacteria(class),Gastranaerophilales(order),Rhodospirillales(order),Victivallales(order)and Bifidobacterium(genus)had protective causal effects on osteonecrosis due to drugs.Methanobacteria(class),Bacillales(order),Methanobacteriaceae(family),Lachnospiraceae(family),Methanobacteriales(order),Holdemania(genus),Holdemania(UCG010 group)(genus),Odoribacter(genus)and Tyzzerella3(genus)had negative causal effects on osteonecrosis due to drugs.According to the results of reverse Mendelian randomization analysis,Clostridiaceae1(family),Peptostreptococcaceae(family),Streptococcaceae(family),Clostridiumsensustricto1(genus)and Streptococcus(genus)showed negative causal effects on osteonecrosis due to drugs.However,Eisenbergiella(genus)showed protective causal effects on osteonecrosis due to drugs.None of the bidirectional sensitivity analysis revealed heterogeneity or horizontal pleiotropy.When gut microbiota were used as exposure and osteonecrosis due to drugs as the outcome,Mendelian randomization analysis found that seven bacterial traits were positively correlated to osteonecrosis due to drugs,nine bacterial traits were negatively related to osteonecrosis due to drugs.When osteonecrosis due to drugs were used as exposure and gut microbiota as the outcome,reverse Mendelian randomization analysis found a negative correlated relationship with five bacterial traits and a positive causal relationship with one bacterial trait.By changing the diversity and composition of gut microbiota,it is expected to improve the incidence and prognosis of osteonecrosis due to drugs,providing new ideas for the study of orthopedic diseases.

Effects of different exercise interventions on symptoms and dynamic balance ability of chronic ankle instability:a systematic review and Meta-analysis / 中国组织工程研究

OBJECTIVE:Clinically,chronic ankle instability has symptoms such as muscle weakness,loss of control and repeated sprains.These symptoms can be effectively improved by means of exercise intervention.Here,we conducted a comprehensive quantitative evaluation of the effects of exercise intervention on chronic ankle instability at home and abroad through Meta-analysis,and examined the moderating effects of different exercise interventions on chronic ankle instability in terms of effect size and exercise dose. METHODS:CNKI,WanFang,Web of Science,EBSCO-SPORTD and PubMed were searched and screened for relevant literature regarding randomized controlled trials of an exercise intervention program against chronic ankle instability.Included literature was analyzed by using Review Manager 5.3 and Stata-SE 15. RESULTS:A total of 52 documents were included with 1 880 patients with chronic ankle instability.Meta-analysis showed that exercise intervention could improve the functional score of patients with chronic ankle instability to a large amount.Neuromuscular control training,a 12-week intervention cycle,and two weekly interventions of>60 minutes are the best protocol for improving instability symptoms in patients with chronic ankle instability.Exercise intervention could improve the dynamic balance of patients with chronic ankle instability to reach the medium equivalent stress.The best exercise program to improve the dynamic balance ability is a combination of neuromuscular control training and hip strength training,with an exercise dose of 30-60 minutes,two or three times per week,for 8 weeks in total. CONCLUSION:Different exercise forms have a good effect on improving the unstable symptoms and dynamic balance ability of patients with chronic ankle instability,among which neuromuscular control training has a more comprehensive effect on improving chronic ankle instability.It is recommended that a multifunctional combination of training forms be used as a means of rehabilitation rather than a single form of exercise.

Causal association of micronutrients with osteonecrosis:evidence from a bidirectional Mendelian randomization trial / 中国组织工程研究

BACKGROUND:Osteonecrosis is a common refractory disease in clinical practice,and observational studies have suggested that micronutrients may have a prognostic role in osteonecrosis.However,the specific causal association between micronutrients and osteonecrosis is not known. OBJECTIVE:To explore the causal association between micronutrients and osteonecrosis by Mendelian randomization using summary data from a large population-based genome-wide association study(GWAS)for clinical diagnosis and treatment. METHODS:The required exposure and outcome data(calcium,magnesium,iron,vitamin E,carotenoids,retinol&osteonecrosis)were extracted from the IEU OpenGWAS database,GWAS catalog database,and FinnGen database.Data were analyzed by bidirectional Mendelian randomization with inverse-variance weighted as the primary study method,and weighted median method,simple mode method,weighted mode method,and MR-Egger regression to complement the results.The reliability of the data was then verified through sensitivity analyses. RESULTS AND CONCLUSION:(1)The results found a positive correlation between serum iron concentration and osteonecrosis,while no correlation was found for other micronutrients.There was no reverse causality in all the data.(2)The results of sensitivity analysis showed a robust causality.(3)By Mendelian randomization method,this study provided evidence of causality between serum iron concentration and osteonecrosis,and understanding the causality of micronutrient elements on osteonecrosis can help in the clinical diagnosis and treatment of osteonecrosis,which is of great clinical significance.

Analysis of medical disputes related to drug-induced cross-allergy and study on prescripition review strategy / 药物流行病学杂志

Objective To analyze the rules and characteristics of cross-allergy cases related to drug-related medical disputes,and to provide reference for the formulation of cross-allergy prescription review strategy.Methods The judgments of cross-allergy related medical damage liability disputes recorded in the legal document database of Beijing Yingke Law Firm and the Chinese Judgment Document Network database from August 2010 to June 2023 were analyzed,the causes of relevant disputes were summarized and analyzed,and more comprehensive response measures were formulated.Results A total of 65 judgments were retrieved,and seven judgments were included.The main drugs causing cross allergy were antibiotics(penicillins,cephalosporins and sulfonamides).Seven cases of medical disputes,all of which were ruled by the court that the medical party had medical errors due to cross-allergies,and had to bear 30％to 80％of the compensation liability.The main reasons for the punishment were that the doctor did not pay enough attention to the patient's past history of allergy and chose unreasonable drugs.Conclusion Medical institutions can reduce the risk of cross-allergy by means of information technology,and play the role of pharmacists in prescription review and pharmaceutical care.Physicians should pay attention to the patient's past history,earnly inquire,strengthen medication education and monitoring,reduce the threat of adverse reactions to the patient's life safety and related drug disputes,and protect the legitimate rights and interests of both doctors and patients.