Objective To investigate the effective therapic methods of the perioperative vasovagal reflex(RV)in patients with atrial arrhythmias(AAs)underwent by catheter ablation .Methods The clinical data in the patients with atrial arrhythmias(AAs) complicated by vasovagal reflex(RV)were retrospectively analyzed during the perioperative procedure of catheter ablation guided by three dimensional mapping system CARTO ;the clinical data were compared between patients with RV and without RV .Results A total of 535 patients with AAs underwent catheter ablation guided by three dimensional mapping system were collected from Janu‐ary 2010 to December 2012 ,and 35 cases of intraoperative RV were found .Compared by patients without RV ,the patients with RV had more elderly cases and the cases of hypertension ,coronary heart disease and diabetes .The RV occurrence was also associated with the fasting ,painful stimuli ,operation time and skill .Conclusion The perioperative RV often is occurred in the cases of high risk and have the precipitating factors ,and the good prognosis could be obtained by the detect and treatment as early as possible .

AIM: To make a contrast and then analyze the difference of optical coherence tomography (OCT) before and after vitreomacular traction syndrome (VTS) was performed.METHODS: The clinical date of 11 evaluable eyes of 11 patients with VTS who were diagnosed by OCT and underwent 25G vitreous surgery from January 2013 to January 2014 were retrospectively analyzed.Patients were followed up for an average of 6mo, to observe the visual acuity and OCT examination of the patient before and after operation.We compared the changes of retinal thickness and local morphology before and after operation.RESULTS: After vitreous retraction, 6 eyes improved, 2 eyes do not improve.One eye received macular membrane traction, in the operation the macular epiretinal membrane peeling, retrial membrane stripping and the triamcinolone acetonide intravitreal injection were given, but after the operation, the vision does not improve.Two eyes received vitreous combined with retinal macular membrane traction.In the operation, macular epiretinal membrane stripping was given, after the operation, visual acuity improved.The proportion of those with visual acuity of 0.1 or more increased from 46% before to 73% after the operation.Before operations, the mean central macular thickness was 619.27±195.13μm, 239.12±143.84μm after, which decreased significantly (P<0.05).CONCLUSION: Vitrectomy can effectively relieve the vitreous traction of the macula, and can prevent further decline in visual acuity and reduce macular edema as well as improve the visual acuity of some patients.So, OCT has important guiding significance on the diagnosis and prognosis of this group.

OBJECTIVETo investigate whether myocardial bridging (MB) is independently associated with coronary atherosclerosis proximal to MB in the left anterior descending coronary artery (LAD) identified by computed tomographic coronary angiography (CCTA).

METHODSFrom March 2011 to December 2012, patients (n=9 862) with suspected coronary disease underwent CCTA using dual-source CT scanner. The baseline clinical characteristics (age, gender, smoking history, presence of hypertension, dyslipidemia, diabetes mellitus, family history of heart attack, and body mass index) and the results of CCTA were reviewed. Two radiologists evaluated the coronary artery for MB and coronary atherosclerosis stenosis (CAS) in LAD and made a diagnosis by consensus. Significant independent risk factors for CAS were investigated by multivariate logistic regression analysis.

RESULTSA total of 3 182 (32.3%) cases of MB and 3 359 cases of CAS of LAD were identified. No patient with CAS in the tunneled segment was found. The mean length of bridges and the mean thickness of the overlying myocardium was (17.3±5.2) mm and (1.2±0.9) mm, respectively. There were 1658 MB cases in 3 359 cases of LAD stenosis and 1 524 MB cases in 6 503 cases of no LAD stenosis (χ(2)=681.12, P<0.05). Logistic regression analysis showed that MB in the LAD were significantly associated with CAS in the proximal LAD (OR=3.07, 95%CI=2.81-3.37, P<0.001), and after final adjustment for age, gender, body mass index, family history of heart attack, smoking, hypertension, dyslipidemia, diabetes mellitus, and resting heart rate (OR=2.86, 95% CI=2.60-3.16, P < 0.001).

CONCLUSIONMB in the LAD is independently associated with CAS in the proximal segment to MB.

Adult ; Aged ; Aged, 80 and over ; Coronary Stenosis ; complications ; diagnostic imaging ; Female ; Humans ; Logistic Models ; Male ; Middle Aged ; Myocardial Bridging ; complications ; diagnostic imaging ; Risk Factors ; Tomography, X-Ray Computed

Objective To investigate the association between the tumour necrosis factor-α-863(TNF-α-863) polymorphism and gout in Han population from the city of Tangshan.Methods We recruited 80 gout patients and 80 healthy individuals into this study.The polymorphisms of TNF-α-863 site were analyzed by polymerase chain reaction-ligase detection reaction(PCR-LDR).The frequencies of different TNF-α-863 genotypes/alleles were analyzed in the gout group and the control subjects.Results No significant differences were observed in the genotype frequencies(x2=2.8807,P=0.0897) and allelic frequencies(x2=4.2646,P=0.1187) of TNF-α-863 site in the comparison between gout and control groups.Conclusion The result of our study suggests that the polymorphism of TNF-α-863 site may not related to gout in Han population in Tangshan.

Objective To evaluate the therapeutic efficacy and safety of transcatheter closure of atrial septal defect (ASD) and patent ductus arteriosus (PDA) using Amplatzer occluder. Methods Routine cardiac catheterization and angiography were performed in 50 patients (23 male, 27 female, age ranging from 3 to 64 years old), including 19 cases of ASD and 31 cases of PDA under local or general anesthesia. After balloon sizing of the ASD, the optimal Amplazter septal occluder (ASO) was transmitted into the left atrial, and the left and right disks were released in turn. The Amplatzer occluder was completely released after transthoracic echocardiography confirmed that there was no residual shunts or new onset mitral valve regurgitation. The Amplatzer duct occluder (ADO) size was selected according to the narrowest point of PDA measured by angiography, and the occluder was released after the repeated angiography showed no residual shunts. Results ① The mean diameter of the ASD measured by balloon was 13-31 (23?6) mm and the diameter of ASO was (17-40) mm. The immediate closure rate was 100%. ② Angiography confirmed that closure of the ductus using ADO was achieved in 30 patients, and closure of the large size (12 mm) was achieved in 1 case of PDA patient using ASO (17 mm). No complications were encountered. Conclusion Transcatheter closure of ASD and PDA using Amplatzer device, with the advantages of simple operation, confirmative occlusion efficacy, minimal invasiveness, wide indications, and less complications, has a bright future of clinical application.

Objective:To explore the association between chest high resolution CT (HRCT) scoring and prognostic factors of interstitial lung disease (ILD) in patients with anti-melanoma differentiation-associated gene 5 (MDA5) antibody-positive dermatomyositis (DM).Methods:The patients with DM admitted to Kailuan General Hospital between January 2017 and December 2019 were included into the study including 13 patients with positiveanti-MDA5 antibody (7 survivors, 6 deaths) and 18 patients with anti-synthase (ARS)-antibody positive. All patients underwent chest HRCT prior to treatment. The consolidation, ground-glass opacity (GGO) and fibrosis were scored to assess HRCT findings. The clinical manifestations were compared between the two groups. Cox regression analysis adjusted for age and sex was used to determine the prognostic factors for anti-MDA5 antibody-related ILD.Results:Compared with ARS patients, glutamyl transferase (GGT) and ferritin levels were significantly higher in MDA5-ILD patients [70.0(37.0, 122.5) vs 21.0(16.5, 33.5), Z=-3.37, P=0.001; 977.0(502.5, 1 366.0) vs 307.1(72.3, 546.9) , Z=-3.44, P=0.001]. The cumulative survival rate was significantly lower in patients with positive anti-MDA5 antibody than in those with positive anti-ARS antibody (100% vs 70%, P=0.001). The DM complicated with acute/subacute interstitial pneumonia (A/SIP) were found to significantly relate to death. There were no significant differences in chest HRCT scoringbetween the survivors and the deceased patients [ HR=1.08, 95% CI(0.95, 1.23), P=0.229; HR=0.97, 95% CI(0.72, 1.30), P=0.814]. Conclusion:Anti-MDA5 antibody is an important index for early diagnosis of DM complicated with acute/subacute interstitial pneumonia (A/SIP). The chest HRCT scoreis is not associated with the prognosis of anti-MDA5 antibody-related ILD patients.

OBJECTIVEThe aim of this study was to evaluate the value of sixteen-detector row computed tomography angiography (CTA) for the assessment of coronary artery bypass graft (CABG).

METHODSSixty-two consecutive patients undergoing coronary artery bypass grafting were recruited. Among them, 6 patients were excluded from the study due to unfavorable control of heart rate. A total of 56 patients with 152 coronary artery bypass grafts (internal mammary artery, n = 48; saphenous venous grafts, n = 104) were examined by computed tomography angiography (CTA) with sixteen-detector row CT and by conventional invasive coronary angiography (CAG). All CT procedures were performed with retrospective electrocardiogram gating method. The patients' mean heart rate was 58 +/- 6 beats/minute. 120 ml of Visipaque 320 were continuously injected with the rate of 4.0 ml/sec during the procedure. The patency and the stenosis of coronary artery bypass grafts were evaluated by two experienced readers.

RESULTSAll the coronary artery bypass grafts were visualized by CTA, and all the proximal bypass anastomoses and 71% of the distal bypass anastomoses were also visualized by CTA. Furthermore, 29 occlusions and 13 significant stenoses of coronary artery bypass grafts were detected by CTA. The comparison of the results between CTA and CAG showed that among all the 42 occluded and stenosed coronary artery bypass grafts detected by CTA, 34 were confirmed by CAG; among all the 110 normal coronary artery bypass grafts detected by CTA, 108 were confirmed by CAG. There were 8 false positive and 2 false negative findings, resulting in a sensitivity of 94%, a specificity of 95%, a positive predictive value of 86%, and a negative predictive value of 99%.

CONCLUSIONSixteen-detector row CTA technology may provide a reliable visualization and higher diagnostic accuracy of coronary artery bypass grafts lesions. This technique can be used as a noninvasive procedure for the diagnosis of suspected coronary artery bypass grafts dysfunction.

Aged ; Coronary Angiography ; methods ; Coronary Artery Bypass ; Coronary Artery Disease ; diagnostic imaging ; surgery ; Coronary Restenosis ; diagnostic imaging ; Female ; Humans ; Male ; Middle Aged ; Tomography, X-Ray Computed

OBJECTIVETo construct a recombinant lentivirus vector containing fusion gene NT4-p53(N15)-Ant and transfer it into HepG2 cancer cells for gene therapy.

METHODSThe gene of p53(N15)-Ant was obtained by T-vector method. After restriction enzyme digestion, the interest gene of p53(N15)-Ant was inserted in pBV220/NT4 vector and fusion gene of NT4-p53(N15)-Ant was subcloned into the plasmid of lentivirus and cotransferred into HEK-293 cells with helper plasmid. The recombinant lentivirus was produced by homologous recombination of the above mentioned two plasmids in HEK-293 cells and its titer was measured by plaque-forming. The expression of LV. NT4-p53-Ant in transfected HepG2 cells was finally confirmed by reverse transcription polymerase chain reaction (RT-PCR) procedure. The effect of LV. NT4-p53(N15)-Ant on HepG2 cells was measured by a colorimetric 3-[4,5-dimethyl thiazol-2-yl]-2,5-diphenyltetrazolium bromide (MTT) assay. The inhibition effect on HepG2 cells of LV. NT4-p53(N15)-Ant and its potential mechanism was detected by light microscopy, electron microscopy, MTT, LDH-release assay and annexin V-PI double staining.

RESULTSThe gene of p53(N15)-Ant was confirmed by restriction enzyme digestion and DNA sequencing. High titer of the recombinant lentivirus was obtained by homologous recombination in HEK-293 cell lines (1 x 10(11) pfu/ml), and the expression of NT4-p53(N15)-Ant gene in HepG2 cells was confirmed by RT-PCR. The viability of HepG2 cells was decreased to 83.4%, 46.9% and 33.9%, at 24 h, 48 h and 72 h, respectively, after infection by LV. NT4-p53(N15)-Ant. Compared with the LV. EGFP control group, there were significant differences (P < 0.01). The LDH level in HepG2 cells infected by LV. NT4-p53(N15)-Ant at 48 h, 72 h and 96 h after infection was 682 IU/L, 815 IU/L and 979 IU/L, respectively, significantly increased than that in the LV. EGFP group (P < 0.01), indicating the cell membrane destruction.

CONCLUSIONThe recombinant lentivirus vector encoding gene NT4-p53(N15)-Ant is successfully constructed in this experiment by molecular cloning and recombination in vitro techniques, and the results suggested that this fusion gene has an anti-tumor effect, which provides the basis for further research on recombinant adenovirus for cancer gene therapy.

Cell Survival ; Genetic Therapy ; Genetic Vectors ; HEK293 Cells ; Hep G2 Cells ; Humans ; L-Lactate Dehydrogenase ; metabolism ; Lentivirus ; genetics ; metabolism ; Nerve Growth Factors ; genetics ; metabolism ; Nucleotide Transport Proteins ; genetics ; metabolism ; Plasmids ; Recombinant Fusion Proteins ; genetics ; metabolism ; Transfection ; Tumor Suppressor Protein p53 ; genetics ; metabolism

Objective To evaluate the use of gated SPECT in patients with hypertrophic obstructive cardiomyopathy (HOCM) and the effects of percutaneous transluminal septal myocardial ablation (PTSMA) on myocardial perfusion.Methods 99 Tcm-methoxyisobutylisonitrile (MIBI) and 18F-fluorodeoxyglucose (FDG) images were performed in 31 HOCM patients before PFSMA and in 15 patients 3-7 d after PTSMA.The images in different left ventricular segments were analysed by using scores.Results In 99Tcm-MIBI images, uptake decreased at the septal regions in 12 HOCM patients (80.0%, 12/15) after PTSMA, 18F-FDG images also showed decreased uptake at the septal regions in 5 HOCM patients (33.3%, 5/15) after PTSMA.Conclusion 99Tcm-MIBI images might be an important method to evaluate PTSMA results, and 18 F-FDG images showed important value as reference.

Adult ; Aged ; Angina, Unstable ; blood ; diagnostic imaging ; Antigens, CD ; blood ; Coronary Artery Disease ; diagnostic imaging ; Endoglin ; Female ; Humans ; Male ; Middle Aged ; Receptors, Cell Surface ; blood ; Ultrasonography, Interventional