Effect of self efficacy and smoking rationalization tendency in the association of physical activity and smoking cessation beliefs among college students / 中国学校卫生

Objective@#To explore the roles of self efficacy and smoking rationalization tendency in the relationship between college students physical activity and smoking cessation beliefs, in order to provide a basis for the positive effects of college students physical activity on smoking cessation beliefs.@*Methods@#From May 6 to 23 in 2023, 3 048 students from 10 colleges in Jiangxi Province were recruited and surveyed using the Physical Activity Participation Scale, the Smoking Cessation Self efficacy Scale, the Smoking Rationalization Tendency Scale and the Smoking Cessation Belief Scale. The Harman one way test was adopted for common method bias test. Bias correction was unfolded by Bootstrap method, and 95% confidence intervals of parameter estimates were analyzed using repeated sampling 5 000 times.@*Results@#The results of the sequential mediation model analysis showed that physical activity was positively associated with college students beliefs about smoking cessation ( β =0.17), and physical activity, self efficacy and smoking rationalization tendency were positively associated with each other ( β =0.41, 0.08, 0.19) ( P <0.05). Both self efficacy and smoking rationalization tendency positively predicted smoking cessation beliefs ( β =0.19, 0.17, P <0.01). Self efficacy and smoking rationalization tendency mediated the relationship between physical activity and smoking cessation beliefs, with a mediating effect value of 0.09, accounting for 62.82% of the total effect value (0.15).@*Conclusions@#Self efficacy and smoking rationalization tendency have a serial mediating effect between physical activity and smoking cessation beliefs among college students. Interventions should be actively used to enhance college students beliefs about smoking cessation, promote smoking cessation behaviors.

Pancreatic ductal adenocarcinoma chemoresistance: From metabolism reprogramming to novel treatment / 中华医学杂志(英文版)

As pancreatic cancer (PC) is highly malignant, its patients tend to develop metastasis at an early stage and show a poor response to conventional chemotherapies. First-line chemotherapies for PC, according to current guidelines, include fluoropyrimidine- and gemcitabine-based regimens. Accumulating research on drug resistance has shown that biochemical metabolic aberrations in PC, especially those involving glycolysis and glutamine metabolism, are highly associated with chemoresistance. Additionally, lipid metabolism is a major factor in chemoresistance. However, emerging compounds that target these key metabolic pathways have the potential to overcome chemoresistance. This review summarizes how PC develops chemoresistance through aberrations in biochemical metabolism and discusses novel critical targets and pathways within cancer metabolism for new drug research.

Study on immunomodulatory effect of Guipi pills on D-galactose-induced aging mice / 中国药房

OBJECTIVE To study the immunomodulatory effect of Guipi pills on D-galactose（D-gal）-induced aging mice. METHODS The immune-related targets and related pathways for Guipi pills to exert immune effects were screened by network pharmacology and verified through pharmacodynamic experiments. Totally 105 male ICR mice were randomly divided into blank control （CON） group， model control （MOD） group， positive control （POS） group， Guipi pills low-dose （GD） group and Guipi pills high-dose （GG） group. Except for the CON group， other groups were subcutaneously injected with 400 mg/kg D-gal to induce the aging model； CON group and MOD group were given distilled water， POS group was given 300 mg/kg pidotimod oral solution intragastrically， GD group and GG group were given Guipi pills 300， 600 mg/kg intragastrically， once a day， for 8 weeks. After medication， the serum and spleen were collected， and the contents of interleukin 2 （IL-2）， IL-4， IL-6 and tumor necrosis factor α （TNF-α）， and the contents of immunoglobulin G （IgG）， IgM and IgA were detected. The spleen index was calculated and the histopathological changes in the spleen were observed. The activities of superoxide dismutase （SOD）， glutathione peroxidase （GSH- Px） and malondialdehyde （MDA）， and the content of 8-hydroxy-2 deoxyguanosine （8-OHdG） in spleen were detected； the expression of TNF/phosphoinositide-3-kinase-threonine protein kinase （PI3k-Akt）-related proteins in spleen was detected except for POS group. RESULTS The results of network pharmacology showed that TNF， IL-6 and Akt1 were core targets. The results of pharmacodynamic study showed that compared with MOD group， the contents of IL-2， IL-4， IgG， IgM and IgA were increased significantly in Guipi pills groups， while the contents of TNF-α and IL-6 were decreased significantly； the spleen index was increased significantly （P＜0.05 or P＜0.01）. The phenomenon of diffuse proliferation of lymphocytes was improved， the spleen cells were closely arranged， and the line between the white pulp and red pulp was clear. The activities of SOD and GSH-Px in spleen were increased significantly， while the activity of MDA， the content of 8-OHdG， and the protein expressions of TNF-α， PI3K and p-Akt were decreased significantly （P＜0.05 or P＜0.01）. CONCLUSIONS Guipi pills can regulate the immune function of D-gal-induced aging mice， which is related to regulating the TNF/PI3k-Akt pathway， thereby reducing oxidative stress damage in spleen tissue of mice， and regulating protein expressions of TNF-α， PI3K and p-Akt.

Evaluation methods and application progress of drug cytotoxicity in vitro / 中国基层医药

Drugs have both therapeutic and toxic side effects. How to quickly determine the toxicity of the test substance is very important for drug development. In vitro cytotoxicity testing compensates for the shortcomings of using animal models for toxicity evaluation. Its role in toxicity evaluation is increasingly important. The development of computer technology and in-depth research in proteomics, genomics, and metabolomics provide a method for in vitro cytotoxicity evaluation towards a faster and more accurate direction. This paper reviews the commonly used cells, evaluation indicators, and detection techniques for in vitro cytotoxicity evaluation, in order to provide some reference for related research.

Clinical efficacy and safety of ixazomib-based therapy in the treatment of relapsed or refractory multiple myeloma / 国际肿瘤学杂志

Objective:To investigate the clinical efficacy and safety of ixazomib-based therapy in patients with relapsed or refractory multiple myeloma (RRMM) .Methods:A retrospective analysis was performed on the efficacy and adverse reactions of 53 RRMM patients treated with a combined regimen containing ixazomib in the Hematology Department of Beijing Jishuitan Hospital from July 8, 2018 to November 30, 2020. Among them, 6 patients received ID regimen (ixazomib + dexamethasone) , 30 patients received ID regimen + immunomodulator, and 17 patients received ID regimen + other chemotherapy drugs.Results:Fifty-three patients with RRMM received ixazomib-based therapy. The median previous treatment line was 3, the median treatment course was 6 (2-30) , and the median follow-up time was 21 months (2-32 months) . The overall response rate (ORR) was 54.7% (29/53) after 2 courses of treatment. Among them, 26.4% (14/53) had very good partial response (VGPR) and 28.3% (15/53) had partial response (PR) . The ORR of the ID regimen group, ID regimen + immunomodulator group and ID regimen + other chemotherapy group were 83.3% (5/6) , 56.7% (17/30) and 41.2% (7/17) respectively, with no statistically significant difference among the three groups ( P=0.208) . The median time to progression (TTP) of 53 patients was 8 months (1-24 months) . The most frequent adverse events of ixazomib treatment were gastrointestinal reactions such as nausea, vomit and diarrhea, with an incidence of 37.7% (20/53) , and the incidence of grade 3-4 was 5.7% (3/53) . The most common hematological adverse events were thrombocytopenia (15.1%, 8/53) , neutropenia (11.3%, 6/53) and anemia (9.4%, 5/53) . Grade 1-2 peripheral neurotoxicity occurred in only 7.5% (4/53) of patients. Conclusion:Ixazomib has good efficacy and safety for the patients with RRMM in the real world.

Clinical outcomes of transcatheter aortic valve implantation in oncology versus non-oncology patients with severe aortic stenosis: A systematic review and meta-analysis / 中国胸心血管外科临床杂志

@#Objective    To compare the clinical outcomes of transcatheter aortic valve implantation (TAVI) in oncology and non-oncology patients with severe aortic stenosis (AS). Methods    A computer-based search in PubMed, The Cochrane Library, EMbase, CBM, CNKI and Wanfang databases from their date of inception to December 2021 was performed, together with reference screening, to identify eligible clinical trials. Two investigators screened the articles, extracted data, and evaluated quality independently. RevMan 5.3 and Stata 12.0 softwares were used for meta-analysis. Results    The selected 8 cohort studies contained 57 988 patients, including 12 335 cancer patients and 45 653 non-cancer patients. The results of meta-analysis showed that in patients with cancer, the 30-day mortality [OR=0.74, 95%CI (0.65, 0.84), I2=0%, P<0.000 01], stroke [OR=0.87, 95%CI (0.76, 0.99), I2=0%, P=0.04] and acute kidney injury [OR=0.81, 95%CI (0.76, 0.85), I2=49%, P<0.000 01] were lower than those in patients without cancer. The 1-year mortality [OR=1.46, 95%CI (1.15, 1.86), I2=62%, P=0.002] and late mortality [OR=1.51, 95%CI (1.24, 1.85), I2=61%, P<0.000 1] were higher in patients with cancer. Conclusion    It is effective and safe in cancer patients with severe AS undergoing TAVI. However, compared with patients without cancer, it is still high in long-term mortality, and further study of the role of TAVI in cancer patients with AS is necessary.

Comparison of Mental Health Symptom Changes from pre-COVID-19 to COVID-19 by Sex or Gender: A Systematic Review and Meta-analysis

ImportanceWomen and gender-diverse individuals have faced disproportionate socioeconomic burden during COVID-19. There have been reports that this has translated into greater negative changes in mental health, but this has been based on cross-sectional research that has not accounted for pre-COVID-19 differences. ObjectiveTo compare mental health symptom changes since pre-COVID-19 by sex or gender. Data SourcesMEDLINE, PsycINFO, CINAHL, EMBASE, Web of Science, China National Knowledge Infrastructure, Wanfang, medRxiv, and Open Science Framework (December 31, 2019 to August 30, 2021). Study SelectionEligible studies compared mental health symptom changes from pre-COVID-19 to COVID-19 by sex or gender. Data Extraction and SynthesisData was extracted by a single reviewer with validation by a second reviewer. Adequacy of study methods and reporting was assessed using an adapted version of the Joanna Briggs Institute Checklist for Prevalence Studies. A restricted maximum-likelihood random-effects meta-analyses was conducted. Main Outcomes and MeasuresAnxiety symptoms, depression symptoms, general mental health, and stress measured continuously or dichotomously. Results12 studies (10 unique cohorts) were included. All compared females or women to males or men; none included gender-diverse individuals. Continuous symptom change differences were not statistically significant for depression (standardized mean difference [SMD]= 0.12, 95% CI -0.09 to 0.33; 4 studies, 4,475 participants; I2=69.0%) and stress (SMD= - 0.10, 95% CI -0.21 to 0.01; 4 studies, 1,533 participants; I2=0.0%), but anxiety (SMD= 0.15, 95% CI 0.07 to 0.22; 4 studies, 4,344 participants; I2=3.0%) and general mental health (SMD= 0.15, 95% CI 0.12 to 0.18; 3 studies, 15,692 participants; I2=0.0%) worsened more among females or women than males or men during COVID-19. There were no significant differences in changes in proportion above a cut-off: anxiety (difference= -0.05, 95% CI -0.20 to 0.11; 1 study, 217 participants), depression (difference= 0.12, 95% CI -0.03 to 0.28; 1 study, 217 participants), general mental health (difference= -0.03, 95% CI -0.09 to 0.04; 3 studies, 18,985 participants; I2=94.0%), stress (difference= 0.04, 95% CI -0.10 to 0.17; 1 study, 217 participants). Conclusion and RelevanceMental health outcomes did not differ or were worse by amounts below thresholds for clinical significance for women compared to men. RegistrationPROSPERO (CRD42020179703). KEY MESSAGESO_ST_ABSQuestionC_ST_ABSDid mental health symptoms worsen more for females or women than males or men in COVID-19? FindingsWe reviewed almost 65,000 citations and identified 12 studies that provided data to directly compare mental health symptom changes from pre-COVID-19 to during COVID-19 for females or women versus males or men. Statistically significant, but small, sex- or gender-based differences were found in 2 of 8 mental health outcomes. MeaningMental health changes among females or women were not significantly different from males or men for most outcomes, and differences that were identified were small and less than minimally important difference thresholds.

Comparison of Mental Health Symptoms prior to and during COVID-19: Evidence from a Living Systematic Review and Meta-analysis

ObjectivesThe rapid pace, high volume, and limited quality of mental health evidence that has been generated during COVID-19 poses a barrier to understanding mental health outcomes. We sought to summarize results from studies that compared mental health outcomes during COVID-19 to outcomes assessed prior to COVID-19 in the same cohort in the general population and in other groups for which data have been reported. DesignLiving systematic review. Data SourcesMEDLINE (Ovid), PsycINFO (Ovid), CINAHL (EBSCO), EMBASE (Ovid), Web of Science Core Collection: Citation Indexes, China National Knowledge Infrastructure, Wanfang, medRxiv (preprints), and Open Science Framework Preprints (preprint server aggregator). Eligibility criteria for selecting studiesFor this report, we included studies that compared general mental health, anxiety symptoms, or depression symptoms, assessed January 1, 2020 or later, to the same outcomes collected between January 1, 2018 and December 31, 2019. Any population was eligible. We required [≥] 90% of participants pre-COVID-19 and during COVID-19 to be the same or the use of statistical methods to address missing data. For population groups with continuous outcomes for at least two studies in an outcome domain, we conducted restricted maximum-likelihood random-effects meta-analyses. Worse COVID-19 mental health outcomes are reported as positive. Risk of bias of included studies was assessed using an adapted version of the Joanna Briggs Institute Checklist for Prevalence Studies. ResultsAs of April 11, 2022, we had reviewed 94,411 unique titles and abstracts and identified 137 unique eligible studies with data from 134 cohorts. Almost all studies were from high-income (105, 77%) or upper-middle income (28, 20%) countries. Among adult general population studies, we did not find changes in general mental health (standardized mean difference of change [SMDchange = 0.11, 95% CI -0.00 to 0.22) or anxiety symptoms (SMDchange = 0.05, 95% CI -0.04 to 0.13), but depression symptoms worsened minimally (SMDchange = 0.12, 95% CI 0.01 to 0.24). Among women or females, mental health symptoms worsened by minimal to small amounts in general mental health (SMDchange = 0.22, 95% CI 0.08 to 0.35), anxiety symptoms (SMDchange = 0.20, 95% CI 0.12 to 0.29), and depression symptoms (SMDchange = 0.22, 95% CI 0.05 to 0.40). Of 27 other analyses across outcome domains, among subgroups other than women or females, 5 analyses suggested minimal or small amounts of symptom worsening, and 2 suggested minimal or small symptom improvements. No other subgroup experienced statistically significant changes across outcome domains. In the 3 studies with data from March to April 2020 and later in 2020, symptoms either were unchanged from pre-COVID-19 at both time points or increased initially then returned to pre-COVID-19 levels. Heterogeneity measured by the I2 statistic was high (e.g., > 80%) for most analyses, and there was concerning risk of bias in most studies. ConclusionsHigh risk of bias in many studies and substantial heterogeneity suggest that point estimates should be interpreted cautiously. Nonetheless, there was general consistency across analyses in that most symptom change estimates were close to zero and not statistically significant, and changes that were identified were of minimal to small magnitudes. There were, however, small negative changes for women or females in all domains. It is possible that gaps in data have not allowed identification of changes in some vulnerable groups. Continued updating is needed as evidence accrues. Funding: Canadian Institutes of Health Research (CMS-171703; MS1-173070; GA4-177758; WI2-179944); McGill Interdisciplinary Initiative in Infection and Immunity Emergency COVID-19 Research Fund (R2-42). Registration: PROSPERO (CRD42020179703); registered on April 17, 2020.

Effects of COVID-19 Mental Health Interventions among Community-based Children, Adolescents, and Adults: A Living Systematic Review of Randomised Controlled Trials

BackgroundScalable interventions to address COVID-19 mental health are needed. Our objective was to assess effects of mental health interventions for community-based children, adolescents, and adults. MethodsWe searched 9 databases (2 Chinese-language) from December 31, 2019 to March 22, 2021. We included randomised controlled trials with non-hospitalised, non-quarantined participants of interventions to address COVID-19 mental health challenges. We synthesized results descriptively but did not pool quantitatively due to substantial heterogeneity of populations and interventions and concerns about risk of bias. FindingsWe identified 9 eligible trials, including 3 well-conducted, well-reported trials that tested interventions designed specifically for COVID-19 mental health challenges, plus 6 trials of standard interventions (e.g., individual or group therapy, expressive writing, mindfulness recordings) minimally adapted for COVID-19, all with risk of bias concerns. Among the 3 COVID-19-specific intervention trials, one (N = 670) found that a self-guided, internet-based cognitive-behavioural intervention targeting dysfunctional COVID-19 worry significantly reduced COVID-19 anxiety (standardized mean difference [SMD] 0.74, 95% CI 0.58 to 0.90) and depression symptoms (SMD 0.38, 95% CI 0.22 to 0.55) in Swedish general population participants. A lay-delivered telephone intervention for homebound older adults in the United States (N = 240) and a peer-moderated education and support intervention for people with a rare autoimmune condition from 12 countries (N = 172) significantly improved anxiety (SMD 0.35, 95% CI 0.09 to 0.60; SMD 0.31, 95% CI 0.03 to 0.58) and depressive symptoms (SMD 0.31, 95% CI 0.05 to 0.56; SMD 0.31, 95% CI 0.07 to 0.55) 6-weeks post-intervention, but these were not significant immediately post-intervention. No trials in children or adolescents were identified. InterpretationInternet-based programs for the general population and lay-or peer-delivered interventions for vulnerable groups may be effective, scalable options for public mental health in COVID-19. More well-conducted trials, including for children and adolescents, are needed. FundingCanadian Institutes of Health Research (CMS-171703; MS1-173070); McGill Interdisciplinary Initiative in Infection and Immunity Emergency COVID-19 Research Fund (R2-42). RegistrationPROSPERO (CRD42020179703); registered on April 17, 2020. RESEARCH IN CONTEXTO_ST_ABSEvidence before this studyC_ST_ABSWe searched for systematic reviews of randomised controlled trials of interventions to address mental health challenges in COVID-19. We used searches from our living systematic review, which were not limited by study design and reviewed citations through April 29, 2021 from MEDLINE, PsycINFO, CINAHL, EMBASE, Web of Science, China National Knowledge Infrastructure, Wanfang, medRxiv (preprints), and Open Science Framework Preprints (preprint server aggregator). We identified 4 systematic reviews of interventions for COVID-19 mental health with search dates between April and September 2020. None, however, included evidence from any completed randomised controlled trials on mental health interventions for community-based children, adolescents, or adults during COVID-19. Added value of this studyOur systematic review is the only living systematic review on COVID-19 community-based mental health interventions registered in PROSPERO and, to the best of our knowledge, the first systematic review to synthesize evidence on completed randomised controlled trials of COVID-19 mental health interventions. The sheer volume of evidence being published in COVID-19 poses a barrier to effective synthesis and policy response. We reviewed over 45,000 citations in any language and distilled this to 9 verified eligible community-based trials. Of these, there were 3 well-conducted trials of interventions designed specifically to be scalable to address challenges of public mental health in COVID-19. One trial showed that internet-based cognitive behavioural therapy in the Swedish general population (N = 670) reduced COVID-19 anxiety and symptoms of depression. Trials that tested a lay-delivered telephone support intervention for homebound older adults in the United States (N = 240) and a peer-moderated group intervention for people with a rare autoimmune condition from 12 countries (N = 172) also found that they improved mental health outcomes, although not all outcomes were statistically significant. Implications of all the available evidenceEffective, scalable, and feasibly delivered mental health interventions are needed for the general public and vulnerable groups as lockdown restrictions continue, even intermittently, and because COVID-19 mental health implications will likely persist beyond the pandemic. Although we identified only 3 high-quality trials, they demonstrated approaches that can be feasibly adopted to meet the needs of adults in the general public and vulnerable groups. The successful internet-based cognitive behavioural therapy intervention was made available to the Swedish general public free-of-charge following testing and suggests that online tools tailored for specific concerns in COVID-19 may represent an efficient way of addressing public mental health. Two lay-and peer-delivered interventions, consistent with pre-COVID-19 evidence, suggest that low-intensity, non-professionally delivered, support-oriented approaches can be leveraged among vulnerable groups. The absence of trials of interventions for children and adolescents underlines the need for evidence on scalable strategies for this population, including school-based approaches.

Clinical reasearch of bendamustine combination regimen in the treatment of relapsed/refractory multiple myeloma / 中国医师杂志

Objective:To investigate the clinical efficacy and safety of bendamustine combination regimen in the treatment of patients with relapsed or refractory multiple myeloma (RRMM).Methods:From March 2020 to December 2020, 16 patients with RRMM were treated with bendamustine combination regimen in Beijing Jishuitan Hospital. The efficacy and adverse events (AEs) of bendamustine combination regimen were retrospectively analyzed in the 16 patients.Results:The median treatment lines for 16 patients with RRMM who received bendamustine combination regimen was 4 lines, and the median course of treatment was 3 (1-8). The median follow-up time after bendamustine treatment started was 5.3(1.3-9.2)months. Among the 16 cases, the disease control rate (DCR), overall response rate(ORR), and ≥ very good partial remission (VGPR) rate were 13/16, 5/16, 4/16 respectively. The median PFS was 4.9 months. Among them, the ORR of bendamustine combined with immunomodulators was higher. AEs were anemia, leukopenia, neutropenia, thrombocytopenia and fatigue. No patients who stopped treatment and adjusted the dose due to AEs.Conclusions:Bendamustine combination regimen is an effective and safe regimen for relapsed/refractory multiple myeloma.

ADAR1 Alleviates Inflammation in a Murine Sepsis Model via the ADAR1-miR-30a-SOCS3 Axis.

Adenosine deaminase acting on double-stranded RNA 1 (ADAR1) mediates adenosine-to-inosine (A-to-I) RNA editing events. ADAR1 is highly expressed in "septic" macrophages and in small intestinal tissues of mice with sepsis. Overexpression of ADAR1 suppresses inflammation and intestinal damage. However, the specific underlying mechanism is unclear. This study was conducted to explore how microRNA (miRNA) regulates the anti-inflammatory mechanism of macrophages following ADAR1 upregulation. A murine sepsis model was established by cecal ligation and puncture (CLP). Mice were randomly assigned to sham, CLP, and CLP+ADAR1 groups. Hematoxylin and eosin (HE) staining and fluorescence isothiocyanate-dextran were used to evaluate intestinal injury and permeability. Quantitative reverse transcription-polymerase chain reaction (qRT-PCR), western blotting, and Luminex assays were performed to detect changes in the expression of inflammatory cytokines. Adenoviruses were used to express ADAR1 in RAW 264.7 cells. Ribonucleoprotein immunoprecipitation analysis was conducted to detect the binding of ADAR1 and miRNAs. A dual-luciferase reporter assay was used to detect the binding of miRNAs and regulatory factors. We observed that ADAR1 significantly increased the expression of suppressor of cytokine signaling 3 (SOCS3) in macrophages and reduced the expression of interleukin-6 in macrophages and the serum, thereby reducing intestinal permeability and mucosal injury in mice with sepsis. The RNA-ribonucleoprotein immunoprecipitation binding assay and qRT-PCR demonstrated a direct interaction between ADAR1 and pri-miR-30a. The luciferase assay demonstrated that SOCS3 was significantly inhibited by miR-30a-5p, the mature product of miR-30a. Thus, ADAR1 exerts a protective effect against sepsis by reducing inflammation and organ damage via the ADAR1-miR-30a-SOCS3 axis.

Amplification of Extrachromosomal Oncogene and Tumorigenesis and Development / 中国肺癌杂志

Extrachromosomal DNA (ecDNA) is a small segment of circular DNA located outside the chromosome, which has the function of self-replication. Recently, amplification of oncogenes on ecDNA has been proved to be a common phenomenon in tumor cells, and has some characteristics worth studying, such as correlation with patients' poor prognosis. Multiple chromosomal events are involved in the formation of ecDNA, and its amplification can directly increase the number of DNA copies of extra-chromosomal oncogenes and accelerate the generation and development of tumors. Moreover, the segregation pattern of unequal transmission of parental ecDNA cells to offspring not only increases tumor heterogeneity, but also enhances tumor adaptation to environment and response to therapy. This article reviews the current status and potential significance of ecDNA in tumor cells.
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Cost-effectiveness analysis of rabies immunization strategy based on dynamic-decision tree model / 中华预防医学杂志

Objective@#To evaluate the cost-utility of different immunization strategies for rabies in China, and to provide a reference for determining the optimal immunization strategy.@*Methods@#The system dynamics model was used to simulate the epidemic of canine rabies and a decision tree model was conducted to analysis different immune strategies. Relevant probabilities were obtained through literature search and on-site investigation. Sensitivity analysis was used to explore the important influenced factors.@*Results@#At baseline, from a social perspective, 70% vaccination of dogs was the optimal strategy compared to current vaccination strategy (43% vaccination in dogs, human category-Ⅱ exposure vaccination/category-Ⅲ exposure vaccination combined with RIG). The total cost was 14 084 354 CNY, and the total utility value was 22 078 616.23 QALYs, and the incremental cost-utility ratio was-62 148 147 CNY/QALY; if human vaccination was considered, 55% vaccination of dogs combined with strategy one was the optimal strategy, its incremental cost-utility ratio was-444 620 557 CNY/QALY. The probability that an injured dog carries rabies virus was the most sensitive parameter. When it was greater than 0.005 03, strategy four was the optimal strategy. When it was less than 82/100 000, strategy one was the optimal strategy; when it was between 82/100 000 and 120/100 000, strategy two was the optimal strategy; when it was between 120/100 000 and 503/100 000, strategy two was the optimal strategy.@*Conclusion@#It was conducive to increase the vaccination coverage of canine for the prevention and control of rabies.

Changes of the mechanoreceptors in the different state remnant stump after ACL rupture / 中国综合临床

Objective To investigate the changes of mechanoreceptors in the different state remnant stumps after anterior cruciate ligament(ACL)rupture.Methods From March 2013 to December 2015,fifty-seven cases of complete ACL rupture were collected to record the time interval from injury to surgery.The patients were divided into two groups according to preoperative kneelax joint measurement results:≤6 mm group (group 1)and>6 mm group(group 2).The morphology of each ligament stump in the two groups was recorded.After H&E staining and immunohistochemical labeling,the morphology,type,and quantity of the mechanoreceptors in the ligament stump were observed under an optical microscope.The relationship among the changes of the mechanoreceptors in the remnant stumps and the morphology of the ligament stump,the affected knee stability and the time from injury to surgery were analyzed.Results Twenty specimens were included in group 1.While 37 specimens were included in group 2.There was significant difference between the two groups in the distributions of the 4 types of the remnant stumps(P=0.000).There was significant difference between the two groups in the distributions of the 4 types of mechanoreceptors(P= 0.002).The number of the mechanoreceptors was positively correlated with the affected knee stability(r=0.63,P=0.018).There was no significant correlation between the number of the mechanoreceptors and the time from injury to surgery in group1 (r=-0.37,P=0.136),while the number of the mechanoreceptors was negatively correlated with the time from injury to surgery in group 2(r=-0.51,P =0.022).Conclusion After ACL rupture,the ligament stump in some patients still connect the femur and the tibia in the joint cavity,and exert mechanical stability function, which can retain the mechanoreceptors in the tissue for a long time.

Therapeutic Effects of CUR-Activated Human Umbilical Cord Mesenchymal Stem Cells on 1-Methyl-4-phenylpyridine-Induced Parkinson's Disease Cell Model.

The purpose of this study is to evaluate the therapeutic effects of human umbilical cord-derived mesenchymal stem cells (hUC-MSC) activated by curcumin (CUR) on PC12 cells induced by 1-methyl-4-phenylpyridinium ion (MPP+), a cell model of Parkinson's disease (PD). The supernatant of hUC-MSC and hUC-MSC activated by 5 µmol/L CUR (hUC-MSC-CUR) were collected in accordance with the same concentration. The cell proliferation and differentiation potential to dopaminergic neuronal cells and antioxidation were observed in PC12 cells after being treated with the above two supernatants and 5 µmol/L CUR. The results showed that the hUC-MSC-CUR could more obviously promote the proliferation and the expression of tyrosine hydroxylase (TH) and microtubule associated protein-2 (MAP2) and significantly decreased the expression of nitric oxide (NO) and inducible nitric oxide synthase (iNOS) in PC12 cells. Furtherly, cytokines detection gave a clue that the expression of IL-6, IL-10, and NGF was significantly higher in the group treated with the hUC-MSC-CUR compared to those of other two groups. Therefore, the hUC-MSC-CUR may be a potential strategy to promote the proliferation and differentiation of PD cell model, therefore providing new insights into a novel therapeutic approach in PD.

The Evaluation of Anti-tumor Effect of CTL Induced by Oxidized Mannan-modified Tumor Cells Vaccine / 中国医科大学学报

Objective To study to take the oxidized Mannan?modified 786?0 in renal clear cell carcinom as tumor cells antigen to sensitize Dendrit?ic cells(DC)and to observe the its killing effect on renal clear cell carcinoma of CTLs induced. Methods Getting the peripheral blood mononucle?ar cells from the volunteers,and then to be stimulated to turn to be maturation by GM?CSF and IL?4 in vitro. Taking the clear renal carcinoma cell as the tumor antigen,and then making it to be modified by oxidized Mannan to acquire the tumor cell vaccine.Experimental groups include:blank group:DC?PBS group,control group:control?DC?786?0,experimental group:DC?Ox?Mannose?786?0 group. Taking the flow cytometry to detect the changes of DC phenotype,then taking the ELISA to detect the sencretion levels of supernatant of IL?12 of DC,then taking the CCK to detecte the cytotoxicity of lymphocytes(CTL)induced by DC of these experiment groups. Results Results by flow cytometry:the mature phenotype of DCs sensitized by Ox?Mannose?786?0 group included CD80,CD83,CD86 and HLA?DR expressed significantly higher than the other groups. As well as the secretion levels of IL?12. Meanwhile the cytotoxicity activity of lymphocytes(CTLs)induced by DCs which are sensitized by Ox?Mannose?786?0 increased more significantly than the other groups. Conclusion Glycosylated Antigens can be more effective in sensitizing antigen?presenting cells DC,and stimulating them to be maturation,while the killing effect to tumor cells also have noticeably improved.

Determination of Residual Organic Solvents in Poly(lactic-co-glycolide) / 医药导报

Objective To establish a capillary gas chromatography( GC)method for the determination of residual organic solvents in poly( lactic-co-glycolide)( PLGA),including methanol,acetone,dichloromethane,and toluene. Methods A capillary GC method was carried out. DB-624 capillary column(30 m× 0. 32 mm,1. 80 μm)with programmed temperature chromatography was employed. The initial temperature was kept at 40 ℃ for 8 min. Then the temperature was raised to 200 ℃ at a rate of 10 ℃·min-1 . The injection port temperature was 180 ℃,and the split ratio was 10:1. The carrier gas was nitrogen. The temperature of FID was set at 250 ℃,and the sample volume was set at 3 μL. Results Four residual organic solvents consisting of methanol,acetone,dichloromethane and toluene in PLGA were completely separated. The linear range of concentration of methanol,acetone,dichloromethane and toluene was within 10. 0-50. 0( r=0. 999 8 ),16. 7-83. 3( r=0.9998),2.0-10.0(r=0.9993),and3.0-14.8(r=0.9997)μg·mL-1,respectively.Therecoveryofmethanol,acetone, dichloromethane and toluene was 99. 9%( RSD=1. 5%),100. 8%( RSD=0. 9%),100. 1%( RSD=1. 1%),and 99. 5%(RSD=0. 6%),respectively. Six batches of samples met the requirements. Conclusion The method is proven to be sensitive and accurate after the validation. It is suitable for the determination of residual organic solvents in PLGA.

Standardized reform and practice of clinical simulated teaching / 中华医学教育探索杂志

This article pointed out the purposes and significances of establishing a standardized clinical simulated education system and introduced the way adopted by general hospital of Tianjin medical university based on the status and problems of practical ability cultivation for students in clinical simulated education.Meanwhile,teaching methods were improved timely and teaching contents were replenished.

Practice and research on strengthening the construction of clinical faculty in affiliated hospital of university / 中华医学教育探索杂志

National Outline Program for Medium and Long-term Education Reform and Development (2010 -2020) points out the importance of cultivating the ‘excellent physicians' and the idea of ‘ constructing high-qualified and high-leveled clinical faculty is at the top priority' was put forward clearly at the ‘ working conference of the national mdical education reform' sponsored by both the ministry of education and the ministry of health.From the perspective of constructing clinical faculty adaptable to the new situation,this essay explored the importance of constructing clinical faculty under the new situation of medical education reform,summarized the achievements and experiences in the general hospital of Tianjn medical university and proposed some suggestions.

Value of MELD score system for the prediction of operative mortality in patients undergoing liver transplantation / 中国普通外科杂志

Objective This study was to evaluate the usefulness of the model of end-stage liver disease (MELD) score in comparison with the Child-Pugh classification to predict postoperative mortality and short-term survival in liver transplant patients. MethodsMELD score and Child-Pugh score were computed for each patient according to the original formula on admission day. Kaplan-Meier survival curves were made using the cut-off points calculated by Youden index. ResultsSix out of 40 patients died within three months, MELD scores and Child-Pugh scores for non-survivors (32.2?8.0, 12.3?2.0) were higher than those for survivors (13.4?6, 9.12?2.31) significantly (P