According to the "Regulations on clinical application management of medical technologies", physicians intending to carry out restricted technologies must undergo standardized training and pass assessments in accordance with the clinical application management standards for the respective technology. As ventricular assist technology is classified as a nationally restricted technology, standardized training is one of the essential conditions for its application. This paper primarily explores the standardized training for the clinical application of ventricular assist technology in Shanghai, in light of its background, clinical application, and current training status. It proposes the training requirements for ventricular assist technology, animal training assessment standards, and clinical practice assessment standards in Shanghai, aiming to promote the standardized development and high-quality advancement of ventricular assist technology in Shanghai.

Objective Exploring the relationship between changes in serum Golgi apparatus transmem-brane glycoprotein 73(GP73)and chitosanase 3-like protein 1(CHI3L1)levels and liver fibrosis and lesion sever-ity in patients with hepatitis B(CHB).Methods Using a case-control study,80 patients diagnosed with CHB infection and developing liver fibrosis in the Infectious Disease Department of Changsha First Hospital from June 2020 to June 2023 were selected as the liver fibrosis group,while 120 patients diagnosed with CHB infection but not developing liver fibrosis in the Infectious Disease Department of our hospital were selected as the control group.The serum GP3,CHI3L1,liver function,and fibrosis indicators of the two groups of patients were compared,and the liver fibrosis group was divided into mild according to Scheuer system standards Perform stratified analysis on patients with significant liver fibrosis.Results The serum GP3 and CHI3L1 levels in the liver fibrosis group were significantly higher than those in the control group,with statistical significance(P＜0.05);The ROC curves were plotted using serum GP3,CHI3L1,and GP3+CHI3L1,respectively.The sensitivity for diagnosing liver fibrosis in CHB patients was 62.81%,60.94%,and 96.33%,with specificity of 80.66%,80.05%,and 75.30%.The AUC values under the curves were 0.792,0.756,and 0.908,respectively;The levels of ALT,AST,HA,LN,PC III NP,C IV,and CG in the liver fibrosis group were higher than those in the control group,and the PLT measurement values were lower than those in the control group,with statistical significance(P＜0.05);49 patients with moderate to severe liver fibrosis(33 in S2 phase and 16 in S3 phase)and 31 patients with mild liver fibrosis(all in S1 phase)had significantly higher serum GP3 and CHI3L1 levels than mild patients,with statistical significance(P＜0.05);The levels of DBIL,ALT,AST,HA,LN,PC III NP,C IV,and CG in patients with moderate to severe liver fibrosis were higher than those in the mild group,and the PLT measurement values were lower than those in the mild group,with statistical significance(P＜0.05).Conclusion The serum GP3 and CHI3L1 levels in CHB patients with liver fibrosis are significantly elevated,and there is a certain correlation with the degree of liver fibro-sis.The combination of these two indicators is beneficial for diagnosing liver fibrosis in CHB patients.

Objective To predict whether antiviral therapy is required in patients with chronic hepatitis B virus(HBV)infection and an age of≤30 years by establishing a noninvasive model,and to investigate the diagnostic value of this model.Methods A retrospective analysis was performed for the clinical data of 175 patients with chronic HBV infection who were admitted to Shenzhen Third People's Hospital from January 2017 to January 2023 and met the inclusion criteria,and according to the results of liver biopsy,they were divided into treatment group with 41 patients(with indications for antiviral therapy)and observation group with 134 patients(without indications for antiviral therapy).The two groups were analyzed in terms of the indicators including clinical data,imaging examinations,and serum biochemical parameters.The univariate and multivariate Logistic regression analyses were used to investigate the parameters affecting the indication for antiviral therapy,and different models for predicting the need for antiviral therapy were constructed based on related parameters.The receiver operating characteristic(ROC)curve was used to compare the diagnostic value of different models.The independent-samples t test was used for comparison of normally distributed continuous variables between groups,and the Mann-Whitney U rank sum test was used for comparison of non-normally distributed continuous variables between groups;the chi-square test or the Fisher's exact test was used for comparison of categorical data between groups.Results There were significant differences between the treatment group and the observation group in alanine aminotransferase,ferritin,total cholesterol(CHOL),triglyceride,platelet count,liver stiffness measured by sound touch elastography(STE),and procollagen Ⅲ N-terminal propeptide(PIIIP)(all P<0.05).The multivariate Logistic regression analysis showed that CHOL(odds ratio[OR]=0.4,95％confidence interval[CI]:0.2—1.0),STE(OR=1.5,95％CI:1.0—2.1),and PIIIP(OR=1.1,95％CI:1.0—1.1)were independent predictive factors for the indications for antiviral therapy.Model 1(STE+PIIIP+CHOL),model 2(STE+PIIIP),model 3(STE+CHOL),model 4(PIIIP+CHOL)had an area under the ROC curve of 0.908,0.848,0.725,and 0.725,respectively,while STE,PIIIP,and CHOL used alone had an AUC of 0.836,0.725,and 0.634,respectively,suggesting that model 1 had the largest AUC,with a specificity of 77.34％and a sensitivity of 96.36％,and had a significant difference compared with STE,PIIIP,CHOL,and the models 2,3,and 4(Z=0.21,3.08,3.06,3.23,0.89,and 0.88,all P<0.05).Conclusion The noninvasive model established based on CHOL,STE,and PIIIP has a good value in predicting the need for antiviral therapy in patients with chronic HBV infection and an age of≤30 years.

Objective To establish a noninvasive diagnostic model for liver fibrosis in chronic hepatitis B(CHB)patients with normal alanine aminotransferase(ALT)and an age of≤30 years by selecting specific indicators from the commonly used noninvasive indicators such as clinical,biochemical,and imaging indicators,to avoid invasive liver biopsy in such patients to some extent,and to guide the timing of antiviral therapy.Methods A total of 251 CHB patients with normal ALT and an age of≤30 years who underwent liver biopsy in Shenzhen Third People's Hospital and The First Hospital of Changsha from January 2019 to January 2022 were enrolled,with 175 patients in the model group and 76 patients in the validation group,and commonly used clinical indicators were obtained based on clinical experience and related articles.The two-independent-samples t test or the two-independent-samples Mann-Whitney U rank sum test was used for comparison of continuous data between groups,and the chi-square test was used for comparison of categorical data between groups.A Spearman rank correlation analysis was used to investigate the correlation between each indicator and liver fibrosis and identify the indicators with correlation(P<0.01,r>0.200);a Logistic regression analysis was used to establish a noninvasive diagnostic model,and the receiver operating characteristic(ROC)curve was used to evaluate its performance and perform validation of the model;this model was then compared with the widely used models of aspartate aminotransferase-to-platelet ratio index(APRI)and fibrosis-4(FIB-4).The Kappa consistency test was used to investigate the consistency of pathological results.Results A total of 17 commonly used clinical indicators were obtained,among which 9 indicators(ALT,aspartate aminotransferase[AST],gamma-glutamyl transpeptidase[GGT],ferritin[FERR],platelet count[PLT],procollagen type Ⅲ amino-terminal peptide[PⅢP],collagen Ⅳ[CⅣ],HBV DNA,and spleen thickness)were correlated with liver fibrosis(P<0.01,r>0.232).Based on the above indicators,the predictive model was established as P=1/(1+e-γ),γ=-1.902+0.106×AST-0.011×PLT-0.265×HBV DNA+0.059×PⅢP,in which P was the probability for predicting≥S2 liver fibrosis and γ was the predictive index.The comparison between each indicator and the model showed that the model had the largest area under the ROC curve of 0.852,with a sensitivity of 92.7%and a specificity of 76.9%.The model was validated in 76 patients and showed an accuracy of 77.600%.The model was compared with APRI and FIB-4,and the results showed that the model has good accuracy.Conclusion Compared with the models of APRI and FIB-4 commonly used in the world,this model can more accurately judge the degree of liver fibrosis in such patients,thereby replacing liver biopsy to some extent and guiding the timing of antiviral therapy.

Objective Utilizing a specially engineered miR-144-GFP-H1 human embryonic stem cell(hESC)reporter line,this study leverages GFP fluorescence as an indicator of miR-144 expression to gauge the progression of erythropoiesis.The investigation is aimed at elucidating the potential roles of lncRNAs within the erythropoietic framework and conducting an initial assessment of their functional impact.Methods The miR-144/451-GFP-H1 cell line(hereafter referred to as 144-H1)was utilized for in vitro erythrocyte induction culture.The subpopulations of cells entering the erythropoiesis stage were characterized by the surface molecules CD71 and GPA.The GFP reporter gene of miR-144 served as a critical determi-nant to distinguish between GFP-positive cells(with a high propensity for erythropoiesis)and GFP-negative cells(with a low propensity for erythropoiesis).Transcriptome sequencing was performed on both groups to identify differentially ex-pressed long non-coding RNAs(lncRNAs).LncRNA entries with potential for validation were selected for preliminary func-tional verification.The CRISPR/Cas9 gene editing technique was employed to design functional interference strategies for the targeted lncRNAs,obtaining 144-H1 cell lines with knocked-out function of the specific lncRNAs.These knockout cell lines,along with non-knockout 144-H1 cell lines,were used for parallel erythrocyte induction culture to identify differential nodes.This approach preliminarily verified their impact on erythropoiesis in an in vitro development model.Results 1)The constructed 144-H1 cell line was capable of expressing GFP fluorescence upon entering the stage of in vitro erythrocyte in-duction,indicating the activation of miR-144/451.2)Within the CD71,GPA double-positive group,significant differences in lncRNA expression were observed between the GFP-positive and GFP-negative subpopulations.3)Gene editing strategies involving the deletion of sequence segments capable of effectively interfering with the function of multiple lncRNA entries were designed and verified for successful editing.In the knockout cell lines,parts of the lncRNA sequences were directly de-leted.4)In parallel validation experiments of erythrocyte induction culture,cell lines with LINC01569 knocked out exhibited significant differences in flow cytometric subpopulations and cell proliferation capabilities compared to the non-knockout cell lines:①The knockout cell lines showed sustained high expression of GFP fluorescence.②The proportion of the CD71-GPA double-positive group in the knockout cell lines continuously decreased during erythrocyte maturation.③No significant ex-pression of hemoglobin was observed in the knockout cell lines,lacking the characteristic red color.④The cell proliferation capability of the knockout cell lines was significantly lower than that of the non-knockout cell lines(P＜0.05).Conclusion The successful employment of the 144-H1 cell line facilitated an exploration into the potential functions of lncRNAs in e-rythropoiesis.This enables the design of more refined in vitro developmental experiments to enhance the precision in captu-ring lncRNA functions.Among the differentially expressed lncRNA entries,LINC01569 was preliminarily validated to play a regulatory role in erythropoiesis.The functional absence of LINC01569 severely impacts the normal differentiation and prolif-eration of erythrocytes.The specific regulatory mechanism of LINC01569 in erythropoiesis warrants further investigation and research.

The aging has become the focus of social attention. It is of great significance to improve the physical function of the elderly and improve their frailty condition for the realization of healthy aging. Exercise intervention is the main intervention method to improve the frailty of the elderly. This paper reviews the exercise intervention for the aged with frailty from the aspects of the definition and performance of frailty of the elderly, the implementation of exercise intervention, and the effect of exercise intervention, in order to provide reference for the aged to formulate exercise programs.

Objective:To systematically review the qualitative researches on the perception and experience of frail older adults on exercise, so as to provide a theoretical basis for the formulation of exercise intervention strategies of frailty.Methods:Qualitative researches on the perception and experience of frail older adults on exercise was retrieved by computer in Chinese and English databases such as PubMed, Web of Science, CINAHL, Cochrane Library, EBSCO, Ovid, Clinical Trial, China National Knowledge Infrastructure, WanFang Data, VIP and SinoMed. The retrieval time limit was from the establishment of the database to December 2022. The quality of the article was evaluated using the quality evaluation criteria for qualitative research of the Joanna Briggs Institute Evidence-Based Health Care Center (2016) in Australia. The results were analyzed by pooled synthesis method.Results:A total of 9 articles were included, and 26 research results were extracted. The results were grouped into 7 new categories, which were further integrated into 4 integrated results, namely, cognition of physical exercise, adjusting exercise mode to fit the physical condition, factors influencing exercise participation, the dilemmas and demands of exercise.Conclusions:The frail older adults lack of knowledge about exercise and their athletic ability is decreased. Their exercise behavior is affected by various factors, and there are difficulties and needs for exercise. They need multi-directional psychological, information and medical exercise support from family, society, hospital and other aspects.

Objective:To explore the efficacy, safety and possible brain network mechanisms of individualized targeted robot assisted Stanford accelerated intelligent neuromodulation therapy (SAINT).Methods:This was a small-sample, open-label study including 15 depressed patients with suicidal ideation. All participants were treated with SAINT in combination with SNRIs. The stimulation target was localized to the region of the left dorsolateral prefrontal cortex (DLPFC) that showed the most negative functional connectivity with the subgenual anterior cingulate cortex (sgACC) based on fMRI data. Stimulation sessions were delivered hourly. Ten sessions were applied per day (18, 000 pulses/day) for 5 consecutive days (90, 000 pulses in total). Stimulation was delivered at 90% resting motor threshold. The changes of functional connectivity of brain networks in various brain regions before and after treatment were compared and analyzed by rest software and functional connectivity analysis based on seed points. The Beck Suicidal Ideation Scale Chinese Version (BSI-CV), HAMD 17, and MADRS were used to assess the suicidal ideation and depressive symptoms at baseline, post treatment, 15 days after treatment, and 30 days after treatment. Statistical analysis was performed using repeated measurements of ANOVA and paired t-tests. Results:(1) After 5-day treatment, individual′s BSI-CV score decreased significantly ( F=38.77, P<0.01), and their average score decreased by 11.80±1.17 (95 %CI=8.19-15.41), with a response rate of 86.67%. SAINT was well tolerated, and there were no significant side effects on individual′s cognitive function. (2) After treatment, patient′s MADRS score decreased significantly at all follow-up assessments ( F=306.97, P<0.01), and the average score decreased by 22.53±1.10 (95 %CI=19.15-25.91) after 5-day treatment, with a response rate of 93.33%. After 15 days and 30 days, the remission and response rates of treatment were 53.33%, 100.00%, 93.33% and 100.00%, respectively. (3) The functional network connectivity after individualized targeted robot assisted SAINT therapy showed significant improvement between sgACC, frontal lobe, temporal lobe, and parietal lobe. Conclusion:Individualized targeted robot assisted SAINT therapy showed satisfactory efficacy and safety in the reduction of suicidal ideation and depressive symptoms, and also improve the functional network connectivity of the injured brain network. Meanwhile, large-sample, randomized, and double-blind controlled studies are warranted to confirm the findings of the current study.

Objective:To explore the efficacy, safety and possible brain network mechanisms of individualized targeted robot assisted Stanford accelerated intelligent neuromodulation therapy (SAINT).Methods:This was a small-sample, open-label study including 15 depressed patients with suicidal ideation. All participants were treated with SAINT in combination with SNRIs. The stimulation target was localized to the region of the left dorsolateral prefrontal cortex (DLPFC) that showed the most negative functional connectivity with the subgenual anterior cingulate cortex (sgACC) based on fMRI data. Stimulation sessions were delivered hourly. Ten sessions were applied per day (18, 000 pulses/day) for 5 consecutive days (90, 000 pulses in total). Stimulation was delivered at 90% resting motor threshold. The changes of functional connectivity of brain networks in various brain regions before and after treatment were compared and analyzed by rest software and functional connectivity analysis based on seed points. The Beck Suicidal Ideation Scale Chinese Version (BSI-CV), HAMD 17, and MADRS were used to assess the suicidal ideation and depressive symptoms at baseline, post treatment, 15 days after treatment, and 30 days after treatment. Statistical analysis was performed using repeated measurements of ANOVA and paired t-tests. Results:(1) After 5-day treatment, individual′s BSI-CV score decreased significantly ( F=38.77, P<0.01), and their average score decreased by 11.80±1.17 (95 %CI=8.19-15.41), with a response rate of 86.67%. SAINT was well tolerated, and there were no significant side effects on individual′s cognitive function. (2) After treatment, patient′s MADRS score decreased significantly at all follow-up assessments ( F=306.97, P<0.01), and the average score decreased by 22.53±1.10 (95 %CI=19.15-25.91) after 5-day treatment, with a response rate of 93.33%. After 15 days and 30 days, the remission and response rates of treatment were 53.33%, 100.00%, 93.33% and 100.00%, respectively. (3) The functional network connectivity after individualized targeted robot assisted SAINT therapy showed significant improvement between sgACC, frontal lobe, temporal lobe, and parietal lobe. Conclusion:Individualized targeted robot assisted SAINT therapy showed satisfactory efficacy and safety in the reduction of suicidal ideation and depressive symptoms, and also improve the functional network connectivity of the injured brain network. Meanwhile, large-sample, randomized, and double-blind controlled studies are warranted to confirm the findings of the current study.

Objective To investigate the impact of the types and concentrations of major medium components on the growth of the marine oil-degrading bacterial strain Acinetobacter sp.Y9.Methods Carbon,nitrogen and phosphorus sources in the medium of Y9 fermentation were screened and optimized by using single factor and orthogonal experiments,and the optimized medium was applied for initial fermentation of Acinetobacter sp.Y9 in the 10 L fermentor.Results After optimization,the optimal fermentation medium of Y9 included 1％ glucose,2％ peptone,0.1 mol/L phosphate buffer solution(Na2HPO4 · 12H2O + KH2PO4),0.05％ NaCl2,0.001％ CaCl2 and 0.019 ％ MgCl2.The value of OD~ of Y9 reached 8.24 after cultivation in the optimized medium in the 10 L fermentor for 12 hours.Conclusions The optimized medium could be used in the pilot fermentation production of Y9 strain,which might lay a solid foundation for large scale fermentation production of Y9.