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

Objective To analyze the influencing factors of hemoglobin A1c in type 2 diabetic patients,including blood glucose,anti-diabetic therapeutic regiments,disease course,age,diabetic education,degree-educated,self-monitoring blood glucose.Methods Seventy-eight type 2 diabetic patients were divided into two groups by different degree of blood glucose,anti-diabetic therapeutic regiments,disease course,age,diabetic education,degree-educated,self-monitoring blood glucose.The levels of hemoglobin A1c in two groups were compared.Results There were significant changes in the levels of hemoglobin A1c between fasting blood glucose (FBG) ≤ 6.1 mmol/L group (30 cases) and FBG ＞ 6.1 mmol/L group (48cases),2 h postprandial blood glucose (2hBG) ≤8.0 mmol/L group (32 cases) and 2hBG ＞ 8.0 mmol/L group (46 cases ),insulin treatment group (27 cases) and no-insulin treatment group ( 51 cases ),combined drugs treatment group ( 36 cases ) and single drug treatment group ( 15 cases),age ≤ 65 years old group (41cases) and age ＞65 years old group (37 cases),disease course≤ 10 years group (39 cases) and disease course ＞ 10 years group( 39 cases),degree-educated above high grade group( 34 cases) and degree-educated below high grade group (44 cases),diabetic education ≥2 times/month group (20 cases) and diabetic education ＜ 2 times/month group (58 cases),self-monitoring blood glucose≥2 times/week group ( 19 cases)and self-monitoring blood glucose ＜ 2 times/week group (59 cases)[ (6.7 ± 1.5 )％ vs.(7.9 ± 1.3 )％,(6.8 ±1.1)％ vs.(7.8 ± 1.2)％,(6.7 ± 1.5)％ vs.(8.1 ± 1.4)％,(6.8 ± l.0)％vs.(8.0 ± 1.6)％,(6.9 ± 1.7)％ vs.(7.4 ± 1.6)％,(6.5 ± 1.2)％ vs.(8.2 ± 1.3)％,(6.9 ± 1.0)％ vs.(7.6 ± 1.4)％,(6.1 ± 1.7)％ vs.(8.0 ±1.1 ) ％,(6.7 ± 1.1 )％ vs.(7.6 ± 1.2)％ ] (P ＜ 0.01 or ＜ 0.05 ).Conclusion Blood glucose,anti-diabetic therapeutic regiments,disease course,diabetic,degree-educated,self-monitoring blood glucose are the important factors influencing hemoglobin A1c.

Objective To investigate the relationship between thrombin and cerebral edema of hypertensive intracerebral hemorrhage. Methods 65 patients with hypertensive intracerebral hemorrhage were divided into conventional group and minimally invasive group according to treatment methods,two groups were detected the thrombin concentration of peripheral blood in 1st day,3rd day,5th and 7th day and brain CT were scanned to calculate edema and hematoma volume;meanwhile,patients in minimally invasive group were detected the thrombin concentration of hematoma fluid in 1st day ,3rd day ,5th and 7th day. Results The thrombin concentration in peripheral blood of two groups in 3rd day were significantly increased(5.09 ± 1.05) IU/L and(5.10 ±1.04) IU/L respectively,the thrombin concentration in hematoma fluid of minimally invasive group in 3rd day was significantly increased(7.68 ± 1.49) IU/L and there were significant differences between them with those of 1st day ,5 th and 7 th day(P＜0.05) ;the edema ratio of conventional group at 3rd day and 5th day (0. 72 ± 0. 15 and 0. 76 ± 0. 17 respectively) were significantly higher than those of 1 st day and 7 th day, the differences were statistically significant ( P ＜ 0.05 ) ; the edema ratio of minimally invasive group at 3rd day(0. 70 ±0.14) was significantly higher than those of 1st day,5th day and 7th day,the difference was statistically significant(P＜ 0.05) ;the edema ratio of conventional group at 5th day and 7th day were (0.76 ±0. 17) and(0. 52 ±0. 14) respectively which were significantly higher than those of minimally invasive group, the differences were statistically significant (P ＜ 0. 05); linear correlation analysis showed: the thrombin concentration of peripheral blood was positively correlated to the edema ratio( r = 0.689, P ＜ 0.05 ) ;the thrombin concentration of hematoma fluid was also positively correlated to the edema ratio ( r = 0. 653, P＜0.05 ). Conclusion Thrombin could lead to the formation of brain edema after intracerebral hemorrhage,minimally invasive treatment could help to speed up the subside of cerebral edema in late period ( ＞3d)of intracerebral hemorrhage.

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

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 investigate the effects of cooking oil fume condensate on the frequencies of chromosome aberration and micronucleus of peripheral blood lymphocytes. Methods The human peripheral blood lymphocytes were cultured in vitro for 24 h, then added cooking oil fume condensate(4, 6, 8, 10 ?l respectively) into the medium and the related indexes were tested. Results The frequencies of chromosome aberration in experimental group were significantly higher compared with the control group (P