AIM:To improve the success rate of experimental modeling of non-alcoholic fatty liver(NAFLD)in rats by high-fat diet through comparing three different formulations of high-fat diets in con-structing non-alcoholic fatty liver rats model,so as to provide a reliable animal model for the study of non-alcoholic fatty liver disease.METHODS:SPF-grade male SD rats were divided into four groups randomly:control group,high-fat diet group1(HFD1),high-fat diet group2(HFD2),high-fat diet group3(HFD3).Each group was given the corre-sponding feed for 8 weeks while modeling.The da-ta on general observation,body weight changes,and ingestion of the rats were recorded during the modeling period.After 8 weeks'feeding,liver ultra-sound,CT and MRI examination were performed for the rats of each group to check the status.Blood and liver samples were collected.Changes in liver function(ALT,AST),blood lipids(TC,TG,HDL-C,LDL-C),and inflammatory indexes(IL-1β,IL-6,TNF-α)were detected.The morphology of the liv-ers was observed with the naked eyes,and the liv-er index and Lee's index were calculated at the end of 8 weeks.The effects of different high-fat diets on the establishment of NAFLD model in SD rats were comprehensively evaluated by comparing the difference of above indexes among the groups.RE-SULTS:Compared with the control group,rats in the HFD1,HFD2 and HFD3 groups showed poor mental deterioration,decreased activity,severe hair loss,decreased food intake,increased body weights,and significantly increased liver index and Lee's in-dex,along with increased liver volume,blunt edge,steatosis and lipid deposition,and the trend was even more pronounced in the HFD3 group.Com-pared with the control group,the serum levels of ALT,AST,TC,TG,LDL-C,IL-1β,IL-6 and TNF-α were significantly increased,while the contents of HDL-C was significantly decreased in the HFD1,HFD2 and HFD3 group,especially in the HFD3 group.Com-pared with the control group,the B ultrasonogra-phy showed an enlarged liver with enhanced paren-chymal echo and pipe unsharpness,CT showed that the liver and spleen CT ratio decreased obvi-ously,and the MRI images showed obvious differ-ence of liver signal intensity between in/out of phase image in the HFD1,HFD2 and HFD3 group,and the most significant imaging changes was ob-served in the HFD3 group.CONCLUSION:The above three kinds of high-fat diets can establish NAFLD model in SD rats after 8 weeks'feeding,the models induced by HFD3 was better than those in-duced by the other two groups.NAFLD lesion is rel-atively serious and expected to last longer in HFD3 group,which are more suitable for investigating the underlying mechanisms of non-alcoholic fatty liver disease and development of lipid-lowering drugs.

Objective:To discuss the effect of the force feedback perceptual rehabilitation training on finger motor function of the patients with finger motor dysfunction after stroke,and to provide the basis for the clinical application and promotion of the force feedback perceptual rehabilitation training.Methods:A total of 86 patients with hand dysfunction after stroke were randomly divided into experimental group(n=43)and control group(n=43),and 3 cases in each group fell off from the experiment,and 80 cases were ultimately completed.On this basis,the patients in two groups received the conventional rehabilitation training for 40 min.The patients in control group received the conventional hand function training for 20 min,while the patients in experimental group received the force feedback perception rehabilitation training for 20 min,once per day,5 days per week,for a total of 6 weeks.The hand function recovery of the patients were evaluated before and after treatment by Action Research Arm Test(ARAT),grip strength,modified Ashworth scale(MAS),total active motion(TAM),Fugl-Meyer motor function assessment-upper limb(FMA-UL)finger motor part score,and Barthel index(BI).Results:Before treatment,there were no statistically significant differences in ARAT total score,grip strength,MAS grade,TAM,FMA-UL finger motor part score,and BI score of the patients between two groups(P＞0.05).After treated for 6 weeks,the ARAT scores,grip strengths,TAM,FMA-UL finger motor part scores,and BI scores of the patients in two groups were all increased than those before treatment(P＜0.05),while the MAS grades of the patients had no significant differences(P＞0.05).After treated for 6 weeks,compared with control group,the grasp score and grip score in ARAT score,and the difference of total ARAT score of the patients in experimental group were increased(P＜0.05),the TAM after treatment and the differences of grip strength,TAM,and FMA-UL finger motor part score of the patients before and after treatment were increased(P＜0.05),while the pinch scores and gross movement scores in ARAT score,MAS grades,and the differences of BI score before and after treatment had no significant differences(P＞0.05).Conclusion:Force feedback perceptual rehabilitation training is helpful in improving the finger motor function of the patients with finger motor dysfunction after stroke.

AIM:To investigate the impact of Bruton tyrosine kinase(BTK)on Alzheimer disease(AD)-like pathology through the NIMA(never in mitosis gene A)-related kinase 7(NEK7)-nucleotide-binding oligomerization do-main-like receptor protein 3(NLRP3)pathway.METHODS:5xFAD and wild-type(WT)mice aged 2,4 and 6 months were utilized to assess the expression of BTK,NEK7 and NLRP3 proteins in the hippocampus and cortex via Western blot and immunofluorescence.Co-immunofluorescence was conducted to identify the interaction between NEK7 and NLRP3 in the brains of 4-month-old mice.Three-month-old mice were divided into a control group and an ibrutinib treatment group,receiving intraperitoneal injections of ibrutinib(10 mg/kg)or solvent for 14 d,and were then subjected to behavioral as-sessments including learning and memory tests using the Morris water maze and Y-maze.Wild-type mice were induced with an AD model by intracerebroventricular injection of Aβ42.Morris water maze tests were performed after 14 d to eva-luate learning and memory,followed by measurement of BTK protein levels in the brain via Western blot.BV2 microglial cells were treated with ibrutinib,followed by LPS or Aβ42 stimulation.Western blot analysis was conducted to measure the protein levels of NEK7,NLRP3,BTK and p-BTK(Y223),while immunofluorescence was used to assess the protein expression of ASC,caspase-1,NEK7 and NLRP3.RESULTS:The levels of BTK,NEK7 and NLRP3 in the brains of 5×FAD mice were significantly elevated compared to WT mice,with observed interaction between NEK7 and NLRP3 in the 5xFAD mouse brains.Ibrutinib treatment significantly improved learning and memory functions in mice compared to the AD group.In BV2 cells,pre-treatment with ibrutinib effectively suppressed the NLRP3 inflammasome pathway and NEK7 proteins in response to Aβ42 stimulation.CONCLUSION:BTK plays a regulatory role in AD-like pathology through the NEK7-NLRP3 pathway both in vivo and in vitro.

OBJECTIVE To investigate the effects of Qinxiang Qingjie oral liquid(QXQJ)on growth and development after repeated administration of 18 d to postnatal day 4(PND4)rats.METHODS The number and sex of PND2 pups were adjusted using the cross-breeding method.These pups were ran-domly divided into the normal control,QXQJ 3.45,10.35 and 28.05 g·kg-1 groups.PND4,juvenile rats were ig given QXQJ every day,while the normal control group was given pure water,once a day,for 18 d,before observation of 3 weeks was resumed.During the experiment,the general condition,body mass,growth and development,physique,bone,hematology and coagulation of the rats in each group were detected.RESULTS 18 d after continuous administration of QXQJ,there was no obvious effect on the food intake,growth and development,nerve reflex,spontaneous behavior,hematology,coagula-tion,blood biochemistry,immunity,growth hormone,histopathology and other examination indexes of juve-nile rats.From PND5,juvenile rats in the QXQJ 10.35 and 28.05 g·kg-1groups developed yellow-brown soft or loose stools and abdominal distention,but the symptoms generally recovered at PND22.The body mass,top-rump length,tail length and limb length of the juvenile rats in the 28.05 g·kg-1 group were signifi-cantly lower at PND7(P<0.05),but recovered one week after drug withdrawal.The bone mineral specific gravity and bone mineral density of the 28.05 g·kg-1 group were significantly lower than those of the normal control group at PND22(P<0.05),but there was no significant difference at PND42.CONCLU-SION QXQJ can cause such indigestion symptoms as yellow brown soft stool or loose stool and abdominal enlargement in unweaned juvenile rats,thus affecting the physical development indicators of rats,but the symptoms can recover after withdrawal of medication or withdrawal from milk.The no observed adverse effect level(NOAEL)of QXQJ administered to 4-day-old rats for 18 d is 3.45 g·kg-1.

Objective    To evaluate the data of preoperative aortic root CT angiography (CTA), compare it with two-dimensional transthoracic echocardiography and investigate the correlation of the two measurements with the actual intraoperative measurement data. Methods    Clinical data of 53 patients with aortic valve diseases who underwent aortic valve repair in our hospital from January 2018 to August 2020 were retrospectively analyzed, including 38 males and 15 females with an average age of 42.9±18.3 years ranging from 10 to 77 years. Preoperative two-dimensional transthoracic echocardiography (TTE) and aortic root CTA measurements were collected, including aortic valve annulus (AVA), aortic sinus (Sinus) and sino-tubular junction (STJ). In comparison with the intraoperative measurements during the aortic valve repair surgery, the consistency analysis was performed. Results    Both the preoperative echocardiography AVA measurements and the CT AVA measurements were positively correlated with the intraoperative AVA measurements (P<0.001). Compared with the echocardiography AVA data [correlation coefficient (ρ)=0.74, mean squared error (MSE)=12.78], the CT AVA data were more accurate and consistent with the intraoperative AVA measurements (ρ=0.95, MSE=2.72). CT AVA data had a higher correlation coefficient with the intraoperative measurements, compared to that of  the echocardiography AVA data (P<0.001). Conclusion    In comparison with two-dimensional transthoracic echocardiography, preoperative morphological evaluation of aortic root CTA is more consistent with the actual intraoperative measurements during aortic valve repair surgery.

Objective The study was to investigate the activation of tumor necrosis factor α (TNF-α) mRNA transcription and protein expression in peripheral blood and activation of signal path PI3K/AKT in patients with chronic heart failure. Methods From February 2015 to April 2018, 244 patients with heart failure in the cardiovascular department of our hospital were selected as heart failure group, while 244 healthy cases were enrolled as the control group at the same time. The peripheral blood samples of two groups were collected. We detected the transcription and protein expression of TNF-α mRNA and the activation of PI3K, AKT in peripheral blood. The left ventricular ejection fraction (LVEF) were measured in two groups. The correlations between influencing factors and LVEF were analyzed. Results The levels of PI3K, AKT in the heart failure group were higher than those in the control group. The differences were statistically significant respectively (P < 0.05). The mRNA relative content and protein content of TNF-α in peripheral blood mononuclear cells of heart failure group were higher compared with those of control group (P < 0.05). The LVEF of heart failure group was significantly lower than that of the control group (34.50 ± 6.33) ％ versus (55.60 ± 2.49) ％, P < 0.001). Among 244 patients with heart failure, Spearman correlation analysis showed that there were significant positive correlations between TNF-a mRNA and protein expression levels and the levels of PI3K, AKT respectively (P < 0.05). Multiple factors unconditional Logistic regression analysis showed that the TNF-α mRNA, protein expression and PI3K, AKT levels in peripheral blood were independent risk factors for LVEF (P < 0.05). Conclusion The expression levels of PI3K, AKT and TNF-α are all significantly increased in chronic heart failure patients, which could participate in the occurrence and development of heart failure.

PURPOSE: The purpose of this study is to investigate the impact of transitional care by a nurse-led multidisciplinary team (MDT) on clinical outcomes and quality of life of patients with ankylosing spondylitis. METHODS: A randomized control study design was used. Subjects were allocated randomly to an experimental group and a control group. The experimental group received intensive transitional care by a nurse-led MDT, whereas the control group received routine nursing care. Disease activity, spinal mobility, comprehensive function, health service utilization, and quality of life were assessed at the baseline and at six months with the Bath Ankylosing Spondylitis Metrology Index, the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI), the Bath Ankylosing Spondylitis Functional Index (BASFI), a health service utilization questionnaire and version 2 of the Short Form-36 health survey. RESULTS: Compared with the baseline, the BASDAI, BASFI, emergency visits, hospitalizations, hospitalization days, and bodily pain, vitality, mental health, total score, and average score of version 2 of the Short Form-36 health survey were improved in the experimental group (p < .05), whereas only bodily pain, vitality, and role-emotional were improved in the control group p < .05). At six months, the experimental group exhibited significantly more improvement on the BASDAI, BASFI, hospitalizations, all domains except Role-physical as well as total score and average score p < .05) compared with the control group. CONCLUSION: A MDT-based nurse-led transitional care improves clinical outcomes and quality of life of patients with ankylosing spondylitis. Future research should be carried out on modes of follow-up and family support.
Baths ; Emergencies ; Follow-Up Studies ; Health Services ; Health Surveys ; Hospitalization ; Humans ; Mental Health ; Nursing Care ; Patient Care Team ; Quality of Life ; Spondylitis, Ankylosing ; Transitional Care

Objective: To investigate the pathogen spectrum distribution and drug resistance of febrile neutropenic patients with hematological diseases in Shanghai. Methods: A retrospective study was conducted on the clinical isolates from the febrile neutropenic patients hospitalized in the departments of hematology in 12 general hospitals in Shanghai from January 2012 to December 2014. The drug susceptibility test was carried out by Kirby-Bauer method. WHONET 5.6 software was used to analyze pathogenic bacteria and drug susceptibility data. Results: A total of 1 260 clinical isolates were collected from the febrile neutropenic patients. Gram-positive bacteria accounted for 33.3% and Gram-negative bacteria accounted for 66.7%. Klebsiella pneumoniae (12.5%) , Stenotrophomonas maltophilia (9.5%) , Escherichia coli (9.1%) , Pseudomonas aeruginosa (8.7%) , Acinetobacter baumannii (6.6%) , Staphylococcus aureus (5.6%) and Enterococcus faecium (5.0%) were ranked in the first 7 of all pathogens. In the respiratory tract secretions specimens, non-fermented strains accounted for 56.2%. Stenotrophomonas maltophilia accounted for 15.2%. Enterobacteriaceae and coagulase-negative Staphylococci accounted for 42.3% (104/246) and 32.6% (85/246) respectively in blood samples. Enterobacteriaceae and Enterococcus bacteria accounted for 39.4% (76/193) and 28.5% (55/193) respectively in pus specimens. The detection rates of methicillin resistant Staphylococcus aureus (MRSA) and methicillin resistant coagulase negative Staphylococci (MRCNS) were 54.3% and 82.5%, respectively. Staphylococcus bacterial strain was not found to be resistant to linezolid, vancomycin and teicoplanin. The detection rate of Enterococcus vancomycin-resistant strains was 8.9%. Enterococcus was not detected resistance to oxazolidinone strains. Enterobacteriaceae bacteria were highly sensitive to carbapenems. The resistance rate of Pseudomonas aeruginosa to imipenem and meropenem was 34.1% and 15.8%, respectively. Stenotrophomonas maltophilia was more sensitive to minocycline hydrochloride, levofloxacin and sulfamethoxazole. The resistance rate of Acinetobacter baumannii only to cefoperazone-sulbactam was less than 10.0%. The antibiotic resistance rate of Klebsiella pneumoniae, Stenotrophomonas maltophilia, Pseudomonas aeruginosa and Acinetobacter baumanii to most of common antibiotics was lower than that of the CHINET surveillance. Conclusions The pathogenic strain distribution in common infection sites of febrile neutropenic patients was characterized. Bacterial resistance surveillance was better than the CHINET nationwide large sample surveillance in China.

Objective To analyze the papers published by domestic scientific research workers in order to improve the academic level of their papers. Methods The papers published by over 3000 domestic scientific research workers were investigated with questionnaires. Their motives to publish papers and the relation between the number of pub-lished papers and the assessment of their performance were analyzed. Results The number of papers published by domestic scientific research workers was increased. However, their academic level was to be further improved. Over quantization of the assessment mechanisms for scientific research increased the external motives to publish papers, thus leading to the insufficient internal motives of them to engage in scientific research. Conclusion A loose and comfortable academic environment should be created for the scientific research workers in order to initiate their in-ternal motives to publish papers. Over quantization of the assessment mechanisms for scientific research should be changed in order to reduce the external motives of domestic scientific research workers to publish papers. Innovative and cultural environment should be created in order to improve the soft power of scientific research in our country.

Chinese Association for Science and Technology in conjunction with Beijing Institute of Biotechnology and Beijing Science and Technology Consulting Center carried out a survey of the research publications by science and technology professionals in China in year 2014.Based on the overall survey data,we selected the group of medical professionals,including medical organization personal according to the classification of different types of units and health care personals according to the job type,and analyzed the status of research publications,including the number of papers published,motivation,stress,evaluation mechanisms,journal selection,and compared with other classification groups.