Objective To investigate the effects of O-GlcNAc modification on gintamine (Glu)-induced heat shock protein 70 (HSP70) expression in LPS-treated rat cardiomyocytes.Methods Primary cultures of neonatal rat cardiomyocytes were randomly divided into 6 groups:group Ⅰ control(group C);group Ⅱ Glu;group Ⅲ LPS;group Ⅳ Glu+LPS;group Ⅴ Glu+LPS+Alloxan and group Ⅵ Gln+LPS+PUGNAc.In group C double distilled water 25 μl was added.In group Ⅱ-Ⅵ the cells were exposed to the sanle concentrations of Glu (5 mmol/L)and LPS(4 μg/ml) except Alloxan (an inhibiter of O-linked β-N-acetyl glucosamine transferase/OGT) (1 mmol/L) and PUGNAc (an inhibitor of O-linked β-N-acetyl glucosaminidase/OGA)(100μmol/L).After being incubated for 6 h,cardiomyocyte viability,O-GlcNAc modification level and HSP70 expression level were measured.Results There was no significant difference in cell viability among the six groups.The levels of O-GlcNAc modification and HSP70 expression were significantly higher in group Ⅱ-Ⅵ than in group Ⅰ,were significantly higher in group Ⅳ and group Ⅵ than in group Ⅲ,were significantly lower in group Ⅴ and higher in group Ⅵ than in group Ⅳ.Conclusion O-GlcNAc modification may be involved in Glu-induced HSPT0 expression in LPS-treated cardiomyocytes.

This study is based on the application of the medical simulator and the multimedia technology to the medical English teaching for overseas students during their clinical practice in surgical department.It shows that this teaching model is effective by delivering a good studying surroundings and various language carriers.

Objective: To evaluate the clinical application of 64-slice spiral computer tomography pulmonary angiography (CTP), in diagnosis of pulmonary embolism (PE). Methods: Sixty-two patients suspected of PE were examined by 64-slice spiral CTPA. The image findings combined with their clinical data were retrospectively analyzed. Results: Twenty-four of the 62 patients were confirmed to have PE by clinical data, laboratory examination and follow-up examination. 64-slice spiral CTPA discovered 152 involved branches in the 24 PE patients, including 4 branches in left and right pulmonary trunk, 52 in lobar pulmonary arteries, 82 in segmental pulmonary arteries, and 14 in subsegmental arteries. Four types of PE were detected in our group, including eccentric filling defect in 58 branches, central filling defect in 49 branches, total occlusion of the pulmonary arteries in 21 branches, and mural embolism of host artery in 24 branches. The diagnosis accuracy of 64-slice spiral CTPA in the present group of patients was 100%, with no missed diagnosis and misdiagnosis. Besides, 64-slice spiral CTPA could reflect the location, morphology, involvement and degrees of PE. Conclusion: 64-slice spiral CTPA is a rapid, accurate and non-invasive diagnostic approach for PE. It is the first choice in clinical screening of PE and may serve as a gold standard for diagnosis of pulmonary embolism.

OBJECTIVETo explore the possible relationship between recurrent aphthous ulcer (RAU) and single nucleotide polymorphism (SNP) of transforming growth factor-β1 (TGF-β1)-509T/C and interleukin-10 (IL-10)-1082A/G sites.

METHODSA total of 138 RAU patients were recruited for this study. The control group consisted of 124 subjects. TGF-β1-509T/C and IL-10-1082A/G sites were detected by restriction fragment length polymorphism-polymerase chain reaction (RFLP-PCR) and sequence specific primer-polymerase chain reaction (SSP-PCR). Relative risk ratios were estimated by odds ratios (OR) and 95% confidence interval (95%CI).

RESULTSSignificant differences were found in the genotype frequencies or allele frequencies of TGF-β1-509T/C and IL-10-1082A/G sites between the RAU patients and controls (P < 0.05). CT genotype (OR = 1.231, 95% CI = 0.702-2.160), TT genotype (OR = 2.482, 95% CI = 1.250-4.927), and T allele (OR = 1.465, 95% CI = 1.036-2.074) at the TGF-β1-509 site exhibited high risks. AG genotype (OR = 1.391, 95% CI = 0.808-2.396), GG genotype (OR = 4.165, 95% CI = 1.944-8.924), and G allele (OR = 2.134, 95% CI = 1.474-3.089) at the IL-10-1082A/G site also showed high risks.

CONCLUSIONTGF-β1-509T/C and IL-10-1082A/G sites are associated with the risk of RAU. The TGF-β1 gene-509T allele and IL-10 gene-1082G allele may serve as genetic determinants for RAU.

Alleles ; Gene Frequency ; Genetic Predisposition to Disease ; Genotype ; Humans ; Interleukin-10 ; Polymorphism, Single Nucleotide ; Stomatitis, Aphthous ; Transforming Growth Factor beta1 ; Transforming Growth Factors

In this paper, an improved empirical mode decomposition (EMD) algorithm for phonocardiogram (PCG) signal de-noising is proposed. Based on PCG signal processing theory, the S1/S2 components can be extracted by combining the improved EMD-Wavelet algorithm and Shannon energy envelope algorithm. Firstly, by applying EMD-Wavelet algorithm for pre-processing, the PCG signal was well filtered. Then, the filtered PCG signal was saved and applied in the following processing steps. Secondly, time domain features, frequency domain features and energy envelope of the each intrinsic mode function's (IMF) were computed. Based on the time frequency domain features of PCG's IMF components which were extracted from the EMD algorithm and energy envelope of the PCG, the S1/S2 components were pinpointed accurately. Meanwhile, a detecting fixed method, which was based on the time domain processing, was proposed to amend the detection results. Finally, to test the performance of the algorithm proposed in this paper, a series of experiments was contrived. The experiments with thirty samples were tested for validating the effectiveness of the new method. Results of test experiments revealed that the accuracy for recognizing S1/S2 components was as high as 99.75%. Comparing the results of the method proposed in this paper with those of traditional algorithm, the detection accuracy was increased by 5.56%. The detection results showed that the algorithm described in this paper was effective and accurate. The work described in this paper will be utilized in the further studying on identity recognition.
Algorithms ; Humans ; Phonocardiography ; Signal Processing, Computer-Assisted

Objective Analyze the causes of the conversion from off-pump coronary artery bypass (OPCAB) to on-pump coronary artery bypass grafting (ONCAB), in order to improve the operative survival rate. Methods From January 2000 to December 2003, 1952 patients underwent OPCAB. 29 patients (1.49%) required conversion from OPCAB to ONCAB. The causes of conversion included ventricular fibrillation in 5 cases, and hypotension in 24 cases. 26 patients received CABG under CPB. 8 patients under aortic cross clamping, and 3 patients needed only CPB support. Results The mean number of grafts was 2.9?0.6. 9 patients died, postoperatively with a mortality rate of 31.03%. In patients with the perioperative blood pressure lower than 80/40?mm?Hg, the mortality rate was 47.6%, and in patients with blood pressure higher than 80/40?mm?Hg, the mortality rate was 8.33% (P=0.043). No one with duration of hypotension less than 15min died, the mortality of the patients with hypotension times more than 15min was 42.86% (P=0.029). In the death group, all the patients had more than three vessel disease and severe vessel stenosis or occlusion. The mortality was hither in female patients. Conclusion Patients converting from OPCAB to ONCAB had a higher mortality. The severity and lasting time of hypotension is closely correlated with the mortality rate. The high risk factors included the surgeons with less OPCAB experience, the patients with more than three vessel diseases and severe coronary stenosis or occlusion, and female patients. The indication of OPCAB must be strictly controlled. Hypotension and severe ventricular fibrillation occurred during OPCAB must be corrected and eliminated immediately.

Liver cancer is the common malignant tumors of threat to human health and life,which makes the high mortality rate of patients with liver cancer.Mesenchymal stem cells can differentiate in the liver microenvironment of new liver cells,and promote tissue repair by secreting neurotrophic factors involved in immune regulation,anti-fibrosis and inhibition of hepatic stellate cells and liver progenitor cells activity and other characteristics of treatment of liver cancer has broad prospects.In this paper,mesenchymal stem cell research progress of the influence of primary liver cancer were reviewed.

Objective To explore the effect of nasal continuous positive airway pressure ventilation on severe respiratory disease and hypoxaemia. Methods In 30 neonates with severe respiratory disease-induced hypoxemia were managed with nasal continuous positive airway pressure, and corresponding nursing. Nasal continuous positive airway pressure before and after treatment, 24h arterial partial pressure of oxygen (PaO2), partial pressure of carbon dioxide (PCO2), PaO2/FiO2 and pH value in children were observed. Result After nasal continuous positive airway pressure ventilation, the levels of PaO2, post-PCO2, PaO2/FiO2 and pH value of children were better than the positive pressure ventilation before treatment and positive pressure ventilation (P < 0.05). Conclusions Nasal continuous positive airway pressure ventilation has good therapeutic effect on severe respiratory disease in children with neonatal hypoxemia. Good ventilation pressure regulation, skin and mucosa protection, prevention of vomiting in children with nursing to ensure the positive significance of continuous positive airway pressure therapy.

Objective To observe the clinical efficacy of abdominal acupuncture plus moxibustion in treating cervical spondylosis of vertebral artery type.Method A hundred patients with cervical spondylosis of vertebral artery type were randomized into a treatment group and a control group, 50 cases in each group. The control group was intervened by abdominal acupuncture plus electroacupuncture; while the treatment group was by moxibustion in addition to the treatment given to the control group. After a treatment course, the onset and remission time of vertigo was observed, and the clinical efficacies were compared between the two groups.Result The total effective rate was 96.0% in the treatment group versus 93.8% in the control group, and the difference was statistically significant (P<0.05). There was a significant difference in comparing the onset and remission time of vertigo between the two groups (P<0.05). In comparing the relapse rates 3, 6, and 12 months after the intervention between the two groups, the difference were statistically significant (P<0.01).Conclusion Abdominal acupuncture plus moxibustion is an effective approach in treating cervical spondylosis of vertebral artery type.