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Atrial fibrillation,which is closely correlated with stroke and heart failure,is among the most common arrhythmias in clinical practice.The asymptomatic and paroxysmal nature of atrial fibrillation leads to a very high missed diagnosis rate,more than half of misdiagnosed patients are classified as intermediate to high risk population of ischemic stroke and heart failure.With the progress of population aging in China,the prevalence of atrial fibrillation will continue to increase.The prediction model of atrial fibrillation can help screen patients with high risk of atrial fibrillation.Subsequent preventive intervention and intensive monitoring for this population can reduce the incidence of stroke and heart failure.This paper summarizes the research progress of traditional regression model and artificial intelligence in atrial fibrillation prediction,and limitations of current research and future research directions.
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OBJECTIVE To study the effects of increasing efficacy and decreasing toxicity of ginkgo flavone aglycone (GA) on doxorubicin (DOX)in the treatment of liver cancer. METHODS A tumor bearing model was established by inoculating liver cancer cell H 22 into the right axillary skin of ICR mice. The successfully modeled mice were randomly divided into model control group,DOX group (2.5 mg/kg,once every other day ,via tail vein ),GA group (30 mg/kg,once a day ,gavage)and GA+DOX group(the usage was the same as single drug groups ),with 6 mice in each group. The administration cycle was 15 days. The general growth of mice in each group were observed ,body weight and tumor weight were measured ,and the inhibition rate of tumor was calculated. Jin’s formula was used to evaluate the effect of combined medication (Q). The serum level of alpha-fetal protein(AFP),the pathological changes of tumor tissue ,cell apoptosis and the expression of platelet-endothelial cell adhesion molecule-1(CD31)were detected in each group. The cardiac index,serum levels of B-type natriuretic peptide (BNP)and N-terminal pro-brain natriuretic peptide (NT-pro BNP ),pathological changes of heart and myocardial fibrosis degree were also detected. RESULTS The percentage of body weight change (except for GA group ) and tumor weights of DOX group,GA group and GA + DOX group were all decreased significantly,compared with model control group (P<0.05 or P<0.01),while tumor weight of GA+DOX gro up was significantly lower than DOX group (P<0.01). Inhibitory rates of tumor in 3 administration groups were 54.29%,42.50% and 89.29% respectively,and Q of two-drug combination was 1.21. The tumor tissues of mice in each administration group were necrotic to varying degrees ;the serum level of AFP and the expression of CD31 in tumor tissue were decreased significantly ,compared with model control group (P<0.05 or P<0.01);the percentage of necrosis area of tumor tissue and the positive rate of apoptosis (except for single drug groups )were significantly increased (P<0.05 or P<0.01),while positive rate of apoptosis in GA+DOX group was significantly higher than DOX group (P<0.05). Cardiac index of mice in DOX group was significantly lower than model control group (P<0.01);serum levels of BNP and NT-pro BNP in DOX group and GA+ DOX group were significantly higher than model control group (P<0.05 or P<0.01);pathological changes of heart and the degree of myocardial fibrosis in GA+DOX group were lower than DOX group. CONCLUSIONS GA combined with DOX show synergistic antitumor effect. GA can strengthen the apoptosis promoting effect of DOX ,and can help to reduce the cardiotoxicity of DOX.
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ObjectiveTo observe the effects of specific exercise therapy on spinal deformity and joint hypermobility of idiopathic scoliosis. MethodsFrom April to October, 2021, 100 children with idiopathic scoliosis in the Scoliosis Rehabilitation Center of Xinhua Hospital were divided into control group (n = 50) and experimental group (n = 50), who accepted routine exercise therapy or scoliosis-specific exercise therapy in accordance with their wishes, for six months. The maximum Cobb angle and bone mineral density were measured, and they were assessed with Beighton Scale and Chinese version of the Scoliosis Research Society-22 Questionnaire Scores (SRS-22) before and after treatment. ResultsThe change of the maximum Cobb angle was more in the experimental group than in the control group (Z = -2.202, P < 0.05) after treatment, and the incidence of respondent was more (χ2 = -2.405, P < 0.05). The bone mineral density decreased in the experimental group after treatment (|Z| > 2.127, P < 0.05). For SRS-22, the total scores increased in both groups after treatment (Ftime = 106.57, P < 0.001), and increased more in the experimental group than in the control group (F = 4.969, P < 0.05); the scores of function domain and self-image domain increased in the experimental group (|Z| > 2.149, P < 0.05), while the mental health domain score decreased in the control group (Z = -2.096, P < 0.05); and the mental health domain score was more in the experimental group than in the control group (Z = -2.260, P < 0.05). ConclusionThe scoliosis-specific exercise therapy is effective on spinal deformity and quality of life for children with idiopathic scoliosis, but less helpful for joint hypermobility and bone mineral density, which need to further improve.
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Objective@#To analyze of epidemiological and etiological characteristics of 14 norovirus clusters or outbreak in Nan an District, for comprehensive prevention and control measures for norovirus infections in the region.@*Methods@#Data were collected from the emergency public health event management information system of China Disease Prevention and Control Information System, and were analyzed by using descriptive epidemiological method.@*Results@#In 2018, 14 cases of norovirus infection clusters and outbreaks were reported in Nan an District, accounting for 63.64% of the total number of incidents in the region. A total of 268 cases were reported, with an average incidence of 2.19%; the outbreak occurred mainly in November(n=6); kindergartens reported the most outbreak(n=7), followed by primary schools(n=5); the median duration of the outbreak was 2.80 days; and 14 outbreaks were caused by the GII-type genome of norovirus, with the main transmission routes being human-to-hnuman transmission.@*Conclusion@#The prevalence of norovirus outbreaks tends to be higher in schools, it is necessary to strengthen the monitoring of vomiting and diarrhea symptoms in collective units such as schools, and efforts should be promoted for implementation of all levels of prevention and control measures in school.
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Objective To investigate the relationship between the genotypes of XRCC1 gene C26304T , G27466A, G28152A and the efficacy and prognosis of hepatocellular carcinoma in Nantong area. Methods The Genomic DNA was extracted from 252 newly diagnosed liver cancer patients admitted to the Department of Interventional Radiology, Affiliated Hospital of Nantong University from January 1, 2018 to December 31, 2018, and relevant clinical data and abdominal enhanced CT/MRI data were collected. Genotyping was performed using Panel high-throughput data analysis. All patients received TACE treatment, and abdominal enhanced CT/MRI was reexamined 4-6 weeks after treatment, and the efficacy was evaluated according to the efficacy of RECIST solid tumor. Survival of participants was followed up by telephone after 15 months. The frequency distribution differences of different genotypes in the efficacy and prognosis of different TACE treatments were compared, and the strength of association between related genotypes and the efficacy and prognosis of HCC TACE was indicated by odds ratio (OR) and its 95% confidence interval (CI). Results 1. The efficacy of TACE was better in AG patients with XRCC1 G28152A heterozygous mutation (OR=0.294, 95%CI:0.053-0.987), while there was no significant difference between patients with homozygous AA and patients with wild-type GG (OR=1.334, 95%CI:0.123-8.545). There was no significant difference in the efficacy of TACE between C26304T and G27466A genotypes. 2. Compared with the patients with wild-type GG, patients with G28152A heterozygous mutation AG were more likely to survive for 15 months and had a better prognosis after TACE (OR=0.262, 95%CI:0.051-0.988), but there was no significant difference in survival time between patients with homozygous mutation AA and patients with wild-type GG (OR=2.180, 95%CI:0.312-12.743).There was no significant difference in survival time between the genotypes of C26304T and G27466A. Conclusion The patients with liver cancer in Nantong who carried heterozygous mutation AG at G27466A site of XRCC1 gene had better curative effect and prognosis of TACE. SNPs at C26304T and G28152A sites had no significant correlation with curative effect and prognosis of TACE.
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Aim To investigate the protective effect of compound total flavonoids on atherosclerosis in ApoE -/- knockout mice.Methods Seven-week old C57BL/6 mice considered of the normal group (n =1 5 );seven-week old ApoE -/- mice were fed with high-fat diet and were assigned randomly into 5 groups:model group,simvastatin group,the low com-pound flavonoids group,the middle compound fla-vonoids group and the high compound flavonoids group.After 1 6 weeks,mice serum and aortas were harvested.The formation of atherosclerotic plaque was analyzed by HE staining,The serum level of lipids pro-files and superoxide dismutase (SOD )were deter-rnined.The levels of IL-1 βand NF-κB in serum were detected by ELISA assay.Results Area of atheroscle-rotic lesion was significantly less in the compound fla-vones group than in model.The level of TC,TG,LDL-C,IL-1 β,NF-κB in serum of the compound flavonoids group were decreased significantly,while SOD and HDL-C increased significantly compared with the mod-el group,and the difference was significant (P <0.05).Conclusion The compound flavonoids have a good protective effect on early atherosclerosis in mice, which may be due to its alleviating effects on hyperlipi-demia and inflammation and oxidation.
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In this paper, we establish a simple model to analyze the semiconductor optical amplifier's (SOA) nonlinear polarization rotation (NPR) and acquire the variable curves of phase difference between TE and TM modes with bias current, pump power, probe power, and linewidth enhancement factor (LEF). The results indicate that the optical switch based on the SOA's NPR can be realized by changing the pump's optical power and the main operating parameters, such as bias current and hold beam power, and then the pump power can be determined. On this basis, a time-space-time (T-S-T) optical packet switching node is proposed, in which the SOA's NPR switch is the basic element. Then, the T-S and S-T experimental systems are set up, and the experimental results demonstrate that the proposed switch scheme can implement the optical switching function in accordance with the routing requirement. The signal-to-noise ratio (SNR) exceeds 20 dB, and the extinction ratio (ER) is more than 10 dB after being delayed and switched in the node.
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Acute leukemia (AL) is an early hematopoietic stem/progenitor cell malignant cloning disease.Minimal residual disease and drug resistance are considered to be the origin of relapse and refractory.Recently,more and more evidences have shown that the interaction between leukemia cells and stromal cells or extracellular matrix in the bone marrow microenvironment can promote their survival,and enhance the resistance to conventional chemotherapy drugs.Integrin is the major molecule mediating the adhesion between leukemia cells and extracellular matrix (cellular and non cellular components),which plays a key role in cell proliferation,survival and other biological processes;however,the mechanism is not fully understood yet.This paper will review molecular mechanisms of the relationship between integrin and AL discovered recently.
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Objective To investigate the distribution of the single nucleotide polymorphism (SNP) of-251 (rs4073) in cytokine interleukin 8 gene promoter region and +781 (rs2227306) in the first intron in Nantong area population, to explore the correlation between the genotypes of these sites and the risk of suffering hepatocellular carcinoma (HCC), and to analyze the interaction between the genotypes and different exposure factors inducing the occurrence of HCC. Methods By using case-control study and restriction fragment length polymorphism polymerase chain reaction (RFLP-PCR) technique, the genotypes of IL-8 gene-251 site and+781 site were classified. Results (1) In individuals with-251 heterozygous mutation genotype AT the risk of developing HCC increased (OR=1.99, 95%CI: 1.01-3.85), and in individuals with +781 mutation genotype CT and TT the risk of developing HCC increased (+781 CT genotype, OR=1.78, 95%CI:1.03-3.1; +781 TT genotype, OR=1.36, 95%CI: 1.01-2.62). (2) In individuals with -251 and +781 AT-CT, TT-CT, AT-CC combined genotypes the risk of developing HCC increased (AT-CT combined genotype, OR=2.10,95%CI:1.52-2.9;TT-CT combined genotype, OR=3.33, 95%CI: 1.01-10.50; AT-CC combined genotype, OR=3.67, 95%CI:2.28-5.90). (3)SNP of-251 had positive interactions with drinking, HBV infection and family history of HCC in the occurrence of HCC, while negative interactions existed between SNP of this site and exposure factors, including age, gender and smoking, in the occurrence of HCC. SNP of +781 had positive interactions with drinking and family history of HCC in the occurrence of HCC, while negative interactions existed between SNP of this site and exposure factors, including age, sex, smoking and HBV infection, in the occurrence of HCC. Conclusion Definite correlation exists between SNP of -251,+781 sites in interleukin 8 gene and the risk of the occurrence of HCC in Nantong area population;and there are interactive effects between SNP of -251, +781 sites in interleukin 8 gene and several exposure factors.
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Objective:To explore the independent risk factors of death during hospitalization in patients with acute myocardial infarction (AMI) .Methods :Clinical data of 614 cases ,who were diagnosed as AMI during hospitaliza‐tion in our hospital from 2011 to 2013 ,were retrospectively analyzed .According to AMI patients'survival or not during hospitalization ,they were divided into death group (n=62) and survival group (n=552) ,single and multi-variable Logistic regression analysis were used to analyze the relationship among baseline feature factors and thera‐peutic methods of all patients and hospital mortality .Results:The mean age was (66.58 ± 12.87) years and there were 39 males (62.9% ) among the 62 dead patients .Hospital mortality was 10.10% (62/614) .Multi‐variable Lo‐gistic regression analysis screened following factor were independent risk factors related to AMI hospital mortality :age (OR= 3.065 ,95% CI:1.188~ 7.915) ,female (OR= 2.775 ,95% CI :1.200~ 6.419) ,heart rate (OR=2.836 ,95% CI:1.405~ 5.722) ,blood glucose (OR = 1.943 ,95% CI :1.186 ~ 3.184) ,Killip class IV (OR=1.744 ,95% CI:1.211~2.513) and left main or triple -vessel coronary disease (OR= 3.157 ,95% CI :1.244 -8.014) . P < 0.05 ~ < 0.01 .Conclusion : Advanced age ,female ,rapid heart rate ,elevated blood glucose level at hospitalization ,Killip class IV and left main or triple‐vessel coronary disease may be independent risk factors of death during hospitalization in patients with acute myocardial infarction .
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The rate-limiting enzyme in the mevalonic acid (MVA) pathway which can lead to triterpenoid saponin glycyrrhizic acid (GA) is 3-hydroxy-3-methylglutaryl-CoA reductase (HMGR). In order to reveal the effect of copy number variation in the HMGR gene on the MVA pathway, the HMGR gene from Glycyrrhiza uralensis Fisch. (GuHMGR) was cloned and over-expressed in Pichia pastoris GS115. Six recombinant P. pastoris strains containing different copy numbers of the GuHMGR gene were obtained and the content of ergosterol was analyzed by HPLC. The results showed that all the recombinant P. pastoris strains contained more ergosterol than the negative control and the strains with 8 and 44 copies contained significantly more ergosterol than the other strains. However, as the copy number increased, the content of ergosterol showed an increasing-decreasing-increasing pattern. This study provides a rationale for increasing the content of GA through over-expressing the GuHMGR gene in cultivars of G. uralensis.
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Objective To evaluate the clinical value of ultrasonography detecting the poster urethrovesical angle(PUVA) in diagnosis of stress urinary incontinence(SUI).Methods From Jan.2006 to Dec.2008,the PUVA in resting phase (PUVA-r) and stress phase( PUVA-s) between with SUI and 100 healthy women were measured by color Doppler ultrasound,including 57 cases in SUI degree Ⅰ,22 cases in SUI degree Ⅱ,5 cases in SUI degree Ⅲ.Results (1) The PUVA-r and PUVA-s were (130±29) and (158±36)in SUI patients,which were significantly higher (113±19)and (115±23)in control group (P<0.01).(2) Correlation analysis showed that PUVA-s was positively correlated with the severity of SUI ( P < 0.01).(3) The area under the receiver operating characteristic curves (ROC) of PUVA-s was 0.82 (95% CI:0.76-0.89) between SUI patients and healthy women.When PUVA-s ≥ 140 ° was chosed as the cut-off value,the specificity,accuracy rate and positive predictive value in diagnosis of SUI were 84%,79%,81%,which were significantly higher than those when cut-off value of PUVA-s ≥ 120(54%,68%,62%; P < 0.05 ).Conclusion The PUVA-s in SUI patients are significantly increased and is positively correlated with the severity of SUI,which are indicated that PUVA-s ≥ 140should be used as cut-off value in diagnosis of SUI by ultrasonography.
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OBJECTIVE: To investigate the use of antibiotics in the inpatients of three second-level hospitals in order to provide reference for rational use of antibiotics. METHODS: By means of retrospective study, the application of antibiotics in three second-level hospitals from Jan. to Jun. in 2008 was analyzed statistically. RESULTS: The ratio of patients using antibiotics was 67.95%. Many inappropriate phenomena still existed in application of antibiotics, such as unclear medication indications, irrational choice of drug, excessive dosage, irrational times of administration, unreasonable drug combinations, etc. CONCLUSION: It is necessary to strengthen the management of antibiotics in order to promote rational use of antibiotics.