0.05).No significant difference was found in c-myc and p16 protein.CONCLUSION:Human BMSCs cultured in vitro in autologous serum meets the requirement of clinic,with enough number,well growth,without karyotype variation,and BMSCs can differentiate into cardiomyocytes.No tumorigenesis is found in body after implantation.Moreover,no significant difference is seen in telomerase activation and c-myc and p16 gene expression.

BACKGROUND: Both therapeutic effects of stem cell transplantation and differentiation mechanism remain controversial;however, plentiful clinical studies have indicated that stem call transplantation might improve heart function.OBJECTIVE: To evaluate the efficacy of intracoronary autologous bone marrow mononuclear call transplantation for the treatment of chronic heart failure.DESIGN: Case analysis. PARTICIPANTS: A total of 80 patients with chronic heart failure who were selected from Henan People's Hospital from 2003 to 2008 were divided into two groups: autologous bone marrow mononuclear call transplantation group (n=48) and conventional drug therapy group (n=32). There were no significant differences in sex, age, accepting conventional drug therapy,echocardiogram before transplantation, plasma brain natriuretic peptide level, and myocardial perfusion imaging between the two goups (P>0.05).METHODS: A one-year following up before and after cell transplantation, conventional drug therapy was performed in the two groups. Based on conventional drug therapy, autologous bone marrow mononuclear call suspension (10 mL) was slowly poured into coronary artery, and the cell number was adjusted to (3.1±1.6)×10 8. MAIN OUTCOME MEASURES: Changes of heart function were measured using ultrasound apparatus; plasma brain natriuretic peptide levels were detected using double antibodies immumofluorescence method; area of myocardial perfusion defect region was detected using single photon emission computed tomography.RESULTS: Patients in the two groups finished the one-year follow-up, and adverse effects and complications were not found before and after cell transplantation. ①Compared to before cell transplantation, end-systolic volume (ESV) of the left ventricle was significantly decreased in the autologous bone marrow mononuclear cell transplantation group after one year (P < 0.05), but ejection fraction (EF) of the left ventricle was significantly increased (P < 0.05). However, both ESV and EF were not changed in the conventional drug therapy group (P> 0.05). Compared to conventional drug therapy group, ESV and EF were changed significantly in the autologous bone marrow mononuclear call transplantation group after one year (P < 0.05). ②Compared to before cell transplantation, plasma brain natriuretic peptide levels were significantly decreased in the two groups (P < 0.05 or 0.01). Area of myocardial perfusion defect region was significantly decreased (P < 0.05 or 0.01), and the area change in the autologous bone marrow mononuclear call transplantation group was significantly greater than conventional drug therapy group (P < 0.05).CONCLUSION: Autologous bone marrow mononucleer call transplantation is safe and feasible for the treatment of chronic heart failure, and it also can remarkably improve heart function and myocardial perfusion within one year.

Objective To investigate the compliance of secondary prevention and the relationship with the long-term outcomes in patients undergoing percutaneous coronary intervention(PCI).Methods 589 patients undergoing PCI were followed-up,and factors including major adverse cardiac events(MACE)),smoking status and the usage of antiplatelet agents,angiotensin converting enzyme inhibitor(ACEI)/angiotensin Ⅱ receptor blocker(ARB),statins,beta blocker,calcium channel blocker and nitrates were recorded.Results The average follow-up time was 18.92 months.At discharge,588 patients(99.83%)were prescribed clopidogrel for(7.89±4.96)months;there were 31 patients(5.26%)who completely discontinued antiplatelet therapy during follow-up.At discharge,the prescription rate of aspirin,ACEI/ARB,beta blocker,statins,calcium channel blocker and nitrates was 98.98%,41.94%,63.50%,83.02%,19.69%and 46.52%respectively,whereas at follow-up,these were decreased to 94.4%,35.99%,55.86%,65.89%,17.49%and 35.31%.At follow-up,there were still 105 current smokers(17.83%).Complete cessation of antiplatelet therapy and current smoking were related to the increased risk of non-fatal myocardial infarct(9.68%v.s.1.08%,P＜0.01);smoking(4.76%v.s.0.83%,P＜0.01)andMACE(19.35%v.s.6.45%,P＜0.01);smoking(11.43%v.s.6.20%,P＜0.05).Conclusion Most patients can adhere to secondary prevention during follow-up,however,the compliance with secondary prevention should be improved further.Cessation of antiplatelet therapy and current smoking contribute to poor prognosis.

Objective:To study the characteristics of breath sound spectroscopy in chronic obstructive pulmonary disease(COPD) patients with different lung function grades, to preliminarily determine the characteristic parameters and indicators of breath sound spectrograms with different lung function grades of COPD, and to explore the visualization and measurability of the differences in respiratory auscultation in patients with different lung function grades.Methods:Patients diagnosed and treated in Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine Chongming Branch from October 2018 to December 2020 were selected. Fifty-two patients with COPD (22 patients with moderate to moderate obstructive ventilation dysfunction (mild to moderate group), 30 patients with severe obstructive ventilation dysfunction (severe group)) and 36 normal controls (control group) were selected. The respiratory sounds were sampled with an electronic stethoscope and transmitted to the audit audio software to calculate the relevant data of respiratory sound pressure level (SPL) and the ratio to minute ventilation (VE) of samples with different lung function grades. A retrospective case-control study was used. The data with normal distribution were analyzed by one-way ANOVA, and the pairwise comparison was performed by SNK- q test. Results:The breathing audio frequency of mild-moderate, severe COPD patients and the control group has a sound pressure difference of (-0.5±2.2) dB and (-1.6±6.1) dB, (0.7±4.0) dB, and there was significant difference between each group ( F=2.64, P=0.038). The sound pressure level per minute ventilation (SPL 50-200/VE) of respiratory sound inspiratory phase in COPD patients with mild to moderate and severe obstructive ventilation dysfunction and the control group were (5.7±1.8) dB/L, (6.1±2.3) dB/L and (5.4±0.9) dB/L, respectively. The expiratory SPL 50-200/VE were (5.8±1.7), (6.3±2.2) and (5.3±1.2) respectively. There was significant difference among the three groups ( Finhalation=3.26, P=0.048; Frespiration=2.44, P=0.045). ROC curve results showed that SPL 50-200/VE in the inspiratory phase, SPL 50-200/VE in the expiratory phase, and sound pressure difference to assess different grades of obstructive ventilatory dysfunction had diagnostic value (AUC values were 0.697, 0.725 and 0.686, respectively; and P values were 0.015, 0.005 and 0.022, respectively). In some patients with COPD, abnormally high energy levels may appear in the time-frequency diagram of breath sounds. Conclusion:There are significant differences in respiratory audio spectrum analysis between patients with different degrees of obstructive ventilation dysfunction and those with normal ventilation function, which can provide a basis for auxiliary judgment of obstructive ventilation dysfunction.

Objective:To investigate the effect of diabetes mellitus in the elderly on memory function in patients with mild cognitive impairment(MCI).Methods:Totally 449 community residents were selected for a 2-year follow-up survey.Montreal Cognitive Assessment(MoCA)and Mini-Mental State Examination(MMSE)were selected for overall cognitive function assessment.Fuld Object Memory(FOM)and Digital Span Test(DST)were used to evaluate delayed recall and instantaneous memory.Demographic data such as gender, age, education level, marital history, annual income, blood pressure, medical history etc.were collected.The glycosylated hemoglobin, fasting insulin, and carotid artery intima-media thickness were checked regularly.All subjects were grouped into non-diabetes mellitus normal cognitive group(NDM-NC group), non-diabetes mellitus mild cognitive impairment group(NDM-MCI group), diabetes mellitus normal cognitive group(DM-NC group)and diabetes mellitus mild cognitive impairment group(DM-MCI group).Results:In cross-sectional observation, the first, second, and last recall scores in the FOM showed a decreasing trend in the DM-MCI group, showed a word "U" -shaped fluctuation trend in the DM-NC group and the NDM-MCI group, and showed no significant change in the NDM-NC group.There were no significant differences in DST anterior-backward test scores between the DM-MCI group and NDM-MCI group(all P>0.05).Through longitudinal follow-up and two-by-two comparison with the other three groups, the average value of glycosylated hemoglobin in the DM-MCI group(6.78±0.60)% was the highest, and the differences were statistically significant( P<0.05).During follow-up, the average carotid intima-media thickness(CIMT)was higher in the DM-MCI group(1.03±0.20)mm than in NDM-NC group(0.89±0.20)mm( P<0.05), and the difference was statistically significant.Comparing with the other three longitudinal follow-up groups, the CIMT thickening speed in DM-MCI group was fastest. Conclusions:Elderly DM patient population have a higher prevalence of MCI, and their memory function fluctuates or declines significantly.Therefore, regular detection of memory function is conducive to delaying the progression of DM and MCI.

Objective:To establish a method for correction of tail vein extravasation based on PET images and to improve the accuracy of SUV.Methods:The simulation method was established by phantom on Nano PET/CT and images were reconstructed by a three-dimensional ordered-subsets exception maximum algorithm. PET images were analyzed by using the Interview Fusion 1.0 software. The optimal scanning time and the ROI delineated method were found. The accuracy of the simulation method was verified by comparing the activity of simulation method with the mice tail activity measured by the dose calibrator directly on Kunming (KM) mouse ( n=11). Using the simulation method, the impact of extravasation on SUV was proved. Independent-sample t test was used to analyze data. Results:Ten minutes was selected as the optimal scanning time and SUV max 42% threshold was selected as the ROI delineated method. The specific correction formula was as follows: actual activity=image activity/(4.48× V+ 77.05)×100 (0.3 MBq/ml≤leakage concentration<6.5 MBq/ml); actual activity=image activity/(6.65× V+ 71.10)×100 (6.5 MBq/ml

Objective : To explore the effects of two hemostatic agents on the bonding strength of different bonding systems in primary tooth dentin. Methods : Seventy-two retained deciduous teeth were randomly selected. Forty-eight teeth were used to construct the microleakage model, the other 24 teeth were cut along the mesial and distal directions and 48 samples were obtained to construct the shear bond strength model. The two experiments were divided into 2 groups. Group A was the total-etch group: A1 (ViscoStat + Spectrum Bond NT); A2 (ViscoStat Clear + Spectrum Bond NT); and A3 (Non + Spectrum Bond NT); Group B was the self-etch group: B1 (ViscoStat + Single bond Universal Adhesive); B2 (ViscoStat Clear + Single bond Universal Adhesive); and B3 (Non + Single bond Universal Adhesive). Microleakage experiments and shear bond strength experiments were carried out respectively and the morphology of the fracture surface was observed by scanning electron microscopy. Results : There was no significant difference in microleakage among groups A1, A2, and A3 (P > 0.05). There was no significant difference in microleakage among groups B1, B2, and B3 (P > 0.05). There was no significant difference in the shear bond strength among groups A1, A2 and A3 (P > 0.05). The shear bond strength of groups B1 and B2 was significantly lower than that of group B3 (P < 0.05). There was no significant difference between groups B1 and B2 (P > 0.05). Conclusion ViscoStat and ViscoStat Clear had no effect on the marginal integrity of deciduous tooth dentin under the different bonding systems. The two hemostatic agents reduced the shear bonding strength of deciduous tooth dentin under the self-etch adhesive system, but had no effect on the shear bonding strength of deciduous tooth dentin under the total-etch adhesive system.

Microglia-mediated neuroinflammation is widely perceived as a contributor to numerous neurological diseases and mental disorders including depression. Discs large homolog 1 (Dlg1), an adaptor protein, regulates cell polarization and the function of K
Animals ; Depression/chemically induced* ; Inflammation ; Lipopolysaccharides/toxicity* ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Microglia ; NF-kappa B ; Neuroinflammatory Diseases

Microglia-mediated neuroinflammation is widely perceived as a contributor to numerous neurological diseases and mental disorders including depression. Discs large homolog 1 (Dlg1), an adaptor protein, regulates cell polarization and the function of K

ObjectiveTo explore the possible mechanism of the Yiqi Jiedu formula （YQ） in treating ischemic stroke （IS） from the perspective of the microbial-gut-brain axis （MGBA）. MethodRats were randomly divided into five groups， with six in each group， including sham surgery group， model group， and low， medium， and high dose YQ groups （1， 5， and 25 mg·kg^-1）. Except for the sham surgery group， all other groups were established with a middle cerebral artery occlusion （MCAO） model using the thread occlusion method. The success of modeling was determined through neurobehavioral scoring， and the protective effect of YQ on IS was evaluated. Then， the changes in gut microbiota before and after MCAO modeling and YQ administration were compared using 16S rDNA sequencing technology， and the possible biological pathways related to the effect of this formula were analyzed. The expression of inflammatory factors such as interleukin-6 （IL-6）， interleukin-17A （IL-17A）， and interleukin-10 （IL-10） in serum was detected by enzyme-linked immunosorbent assay （ELISA）. Western blot was used to detect the expression of tight junction proteins ZO-1 and Occludin in brain and intestinal tissue， and hematoxylin-eosin staining （HE） was used to observe pathological changes in the cerebral cortex and colon， so as to validate the possible mechanism of action. ResultYQ significantly improved the neurobehavioral score of MCAO rats （P<0.01） and played a good regulatory role in intestinal microbial disorders caused by enriched pathogens and opportunistic pathogens during the acute phase. Among them， significantly changed microorganisms include Morgentia， Escherichia Shigella， Adlercreutzia， and Androbacter. Bioinformatics analysis found that these bacteria may be related to the regulation of inflammation in the brain. Compared with the blank group， the detection of inflammatory factors in the serum of IS model rats showed an increase in inflammatory factors IL-6 and IL-17A （P<0.01） and a decrease in the content of anti-inflammatory factor IL-10 （P<0.01）. Compared with the model group， the content of inflammatory factors IL-6 and IL-17A in the serum of the treatment group decreased （P<0.05）， and that of anti-inflammatory factor IL-10 increased （P<0.01）. The expression results of barrier proteins ZO-1 and Occludin in brain and intestinal tissue showed that the expression levels of both decreased in IS model rats （P<0.05）， while the expression levels of both increased in the treatment group （P<0.05）. ConclusionAcute cerebral ischemia can lead to an imbalance of intestinal microbiota and damage to the intestinal barrier， and it can increase intestinal permeability. YQ can regulate intestinal microbiota imbalance caused by ischemia， inhibit systemic inflammatory response， and improve the disruption of the gut-blood brain barrier， preventing secondary cascade damage to brain tissue caused by inflammation. The MGBA may be an important mechanism against the IS.