Objective To observe the effect of carvedilol and motoprolol on the weight of cardiac muscle in patients with hypertensive heart disease.Methods One hundred patients with hypertensive heart disease were divided into two groups by random number and treated with carvedilol(n =54) and motoprolol(n =46) respectively for 12 months.Data were recorded (left ventricular end-diastolic dimension (LVEDD),left ventricular end-systolic dimension (LVESD),left ventricular ejection fraction (LVEF),interventricular septal thickness (IVST),and left ventricular posterior wall thickness (LVPWT)) before and after the treatment.Left ventricular muscle mass(LVW),left ventricular mass index(LVWI) were calculated.Results After treatment,both groups improved with declined LVEDD (motoprolol group:(43.60 ± 4.43) mm vs.(46.70 ± 3.21) mm,t =18.143,P ＜ 0.01 ; carvedilol group:(42.50 ± 2.56) mm vs.(46.5 ± 3.18) mm,t =18.232,P ＜ 0.01),thinner IVST (motoprolol group:(9.68 ± 1.65) mm vs.(12.01 ± 1.56) mm,t =12.785,P ＜ 0.01 ; carvedilol group:(9.05 ± 1.04) mm vs.(11.59 ± 1.54) mm,t =7.865,P ＜ 0.01),and increased LVEF (motoprolol group:(52.89 ± 8.78)％ vs.(50.23 ± 7.88)％; carvedilol group:(54.65 ± 8.87％)％ vs.(50.22 ±7.89)％).In the carvedilol treatment group,LVMI significantly (t =4.987,P ＜ 0.01) declined from (133.75 ±25.89) g/m2 to (109.25 ± 22.53) g/m2.In the motoprolol treatment group,LVMI declined from (134.76 ± 25.87) g/m2 to (119.78 ± 23.65.53) g/m2 (t =5.689,P ＜ 0.01).After the treatment,each index of carvedilol group improved significantly compared with metoprolol group (P ＜ 0.05).Conclusion Both medications are able to reduce the weight of cardiac muscle of patients with hypertensive heart disease,and carvedilol is better than motoprolol.

AIM: To investigate whether small GTPase RhoA's downstream effector Rho kinase mediates burn serum-induced endothelial hyperpermeability. METHODS: Primary cultured rat dermal microvascular endothelial cells (DMECs) were exposed to serum isolated from burned or sham burn rats for 6 hours and 8 hours, respectively, and did or didn't pretreated or post-treated with Y-27632 (30 ?mol/L), a specific inhibitor of Rho kinase. ECs were then prepared for routine scanning electron microscopy observation, or stained with rhodamine-phalloidin for F-actin visualization. Permeability to FITC-albumin was evaluated using EC monolayers. RESULTS: Stimulation with 15% burn serum for 6 h changed the ultrastructure on cellular surface of DMECs with appearance of ripple marks instead of microvillus. The small protuberances at cellular lateral were shorten and the gaps were seen between adjacent cells. Post-treatment of Y-27632 reversed the changes of ultrastructure on the cellular surface. Burn serum induced a striking reorganization of actin cytoskeleton with a weakening of fluorescent intensity of the peripheral filament bands and formation of the long and thick stress fibers, lamellipodia and filopodia. The stress fibers were diminished by pretreatment or post-treatment of Y-27632. But lamellipodia and filopodia were not influenced by pretreatment or post-treatment of Y-27632. Pre-treatment of Y-27632 also attenuated significantly the increase in EC monolayer permeability stimulated by burn serum for 6 h. However, post-treatment of Y-27632 could not attenuated burn serum-induced endothelial hyperpermeability response although their Pa values were lower than simple burn serum group's. CONCLUSION: These findings indicate that Rho kinase is involved in the mediation of burn serum-induced endothelial actin cytoskeleton reorganization and early stage of barrier dysfunction. [

Purpose To evaluate the correlation between neovascularization in femoral artery plaque and cerebral infarction by using contrast enhanced ultrasound,and to assess the predictive value of femoral artery plaque stability in cerebral infarction and its clinical significance.Materials and Methods Sixty-two patients with femoral artery hypoechoic plaques were retrospectively studied.The patients were divided into cerebral infarction group and control group,and all of them underwent two-dimensional ultrasound and contrast enhanced ultrasound.The parameters such as the maximum thickness,the stenosis rate of cross-sectional area,the enhanced intensity (EI),the area under the curve (AUC) and the grading of the neovascularization in the plaque were detected and compared.Results The EI and AUC of the cerebral infarction group were higher than those of the control group,the differences were statistically significant (P＜0.05).Many grade Ⅲ and Ⅳ neovascularizations were found in cerebral infarction group,while the grade Ⅰ and Ⅱ neovascularizations were mostly in the control group,the difference between the two groups was statistically significant (P＜0.05).There were no significant differences in the maximum thickness and stenosis rate of cross-sectional area between the two groups (P＞0.05).The neovascularization grade,EI and AUC in the plaque were positively correlated with cerebral infarction (r=0.331,0.416 and 0.410,P＜0.05).Conclusion ① The chara-cteristics of femoral artery hypoechoic plaques in patients with cerebral infarction are rich of neovascularization and instable by using contrast-enhanced ultrasonic imaging.② The neovascularization of femoral artery hypoechoic plaque has positive correlation with cerebral infarction,which may provide a new method for clinical prediction and prevention of intracranial atherosclerosis.

Objective To investigate the expressions of RGC-32 and E-cadherin in pancreatic cancer and analyze their clinicopathological significance and the correlation with each other.Methods SP immunohistochemistry was used to detect the expressions of RGC-32 and E-cadherin in 42 cases of pancreatic cancer tissues,12 cases of chronic pancreatitis tissues and 8 cases of normal pancreatic tissues.Results The positive staining for RGC-32 was predominantly observed in the cytoplasm of pancreatic acinar cells.The positive staining for E-cadherin was mainly observed in the cytomembrane of normal pancreatic and chronic pancreatitis acinar cells,but aberrant expression ( cytoplasm expression and ( or ) weaker expression) could be found in pancreatic cancer cells.The positive expression rate of RGC-32 and aberrant expression rate of E-cadherin were 78.6％ (33/42) and 54.8％ (23/42),respectively,in pancreatic cancer tissues,which were significantly higher than those in normal pancreatic tissues [37.5％ (3/8) and 0] and chronic pancreatitis [41.7％ (5/12)and 8.3％ (1/12) with statisticai significance,P ＜0.05].The expression of RG C-32 in pancreatic cancer was associated with lymph node metastasis and TNM staging (P =0.016,0.025,respectively),but not with age,gender and differentiation degree ( P =0.831,1.000,0.629,respectively).The aberrant expression of E-cadherin was associated with differentiation degree,lymph node metastasis and TNM staging ( P =0.024,0.004,0.004,respectively),but not with age and gender ( P =0.970,1.000,respectively).A significantly positive correlation was found between positive expression rate of RGC-32 and aberrant expression rate of E-cadherin (r =0.458,P ＜0.01 ).Conclusions Both positive expression rate of RGC-32 and aberrant expression rate of E-cadherin are up-regulated significantly in pancreatic cancer tissues and RGC-32 may be involved in the invasion and metastasis of pancreatic cancer by regulating epithelial mesenchymal transition.

ObjectiveTo investigate the influence of cobalt chloride ( CoCl2 )-mimetic hypoxia on theproliferation,apoptosis and migration of human pancreatic cancer cell fine PANC1.MethodsPANC1 cells were treated with 0(control),100,200,400,800 μmol/L CoCl2 respectively for 24 h.Real-time RT-PCR and Western blot were used to determine hypoxia induced factor ( HIF)-1o mRNA and protein expression respectively,and cell counting kit-8(CCK-8) assays,flow cytometry and cell scratch test were used to examine the proliferation,apoptosis and migration of PANC1 cells,respectively.ResultsIn the control group and 100,200,400 and 800 μmol/L CoCl-2 groups,the expressions of HIF-1t mRNA were 1,1.08 ±0.12,1.12 ± 0.09,1.04±0.11,0.66 ±0.07,and the expressions of VEGF mRNA were 1,2.69±0.35,4.81 ±0.54,2.19 ± 0.21,0.79 ± 0.08,while the expressions of HIF-1 α protein were 0.23 ± 0.03,0.36 ± 0.04,1.15 ± 0.11,1.08 ± 0.09,0.44 ± 0.04; and the expressions of VEGF protein were 0.14 ± 0.02,0.12 ± 0.01,0.95 ±0.09,0.87 ±0.09,0.55 ±0.06; and cell viability rates were 100％,(98.43 ±2.88)％,(76.15 ± 0.70)％,(53.87 ±0.77)％,(35.23 ±0.67)％ ; while cell apoptotic rates were (5.2 ±1.12)％,(5.74 ± 1.07)％,(6.82 ± 1.85)％,(12.09 ±3.53)％,(31.88 ±6.95)％ ; the cell migration distance of PANC1 cells were (43.24 ±3.67)％,(59.46 ±5.39)％,(80.56 ±8.05)％,(63.89 ±5.96)％,(9.09 ± 1.59 ) ％.Compared with those of control group,the expressions of VEGF mRNA,VEGF and HIF-1 α protein,cell migration distance showed a two-way variation ( ascending first and descending later) (P ＜0.05 ),and the expression of HIF-1α mRNA and cell proliferation rate was decreased in a dose-dependent manner,while the cell apoptosis was increased in a dose-dependent manner.Conclusions CoCl2 significantly inhibits the proliferation and promotes apoptosis of PANC1 cells at certain level.CoCl2 has a two-way effect on the migration of PANC1 cells,and it may be related to the direct injury of high concentration of CoCl2 on cells.

Objective To explore the correlation and significance of V312F locus polymorphism of PCSK9 gene in patients with coronary heart disease.Methods We selected 3560 patients with coronary heart disease who came to our hospital from January 2014 to January 2016 as the case group.They were divided into 5 subgroups:angina group,myocardial infarction group,silent myocardial ischemia group,ischemic cardiomyopathy group,and sudden death group,according to their anatomic and pathophysiological features.Data of 1 000 people for physical examination served as the control group.PCR assay combined with direct sequencing method was applied to test V312F locus polymorphism of PCSK9 gene.Logistic regression analysis was used to analyze relationship between V312F locus polymorphism of PCSK9 gene and types of coronary heart disease.The concentration of serum PCSK9 and lipids of the two groups were also measured.Results The serum levels of PCSK9,TC,TG and LDLC and ratio of positive family history in the case group were significantly higher than those in the control group,while the level of HDLC was lower than that of the controls (all P＜0.05).Indexes of sudden death subgroup in the case group showed the most significant changes,while asymptomatic myocardial ischemia subgroup showed the weakest changes.The frequency of genotype TT,GT and allele T in the case group was 3.4％,16.6％ and 11.7％,respectively,which was significantly higher than that in the control group (1.1％,10.2％ and 6.2％) (all P＜0.01).The highest frequency of genotype TT,GT and allele T was found in sudden death subgroup,and the lowest frequency of these indexes was found in asymptomatic myocardial ischemia subgroup (P＜0.05).Results of Logistic regression analysis showed that genotype TT in V312F locus of PCSK9 gene was related to the severity of coronary heart disease (OR =8.463,95％ CI from 3.505 to 17.854,P＜0.001).Conclusion The mutation of V312F (T/G)locus of PCSK9 gene might be related to the severity of coronary heart disease.

Objective To investigate the levels of antibody to pertussis toxin (PT) IgG in newborns in Shunyi Women and Children's Hospital of Beijing Children's Hospital in 2016.Methods A total of 419 newborns were enrolled in this study.Umbilical cord blood sample was collected from each subject and detected by enzyme-linked immunosorbent assay to measure the concentration of PT-IgG.Besides,all newborns were followed up to January 31,2017.Chi-square test was used for statistical analysis.Results The detectable rate of umbilical cord blood samples for PT-IgG accounted for 30.1％ (126/419).The median antibody level was ＜ 5 U/ml,and the 90th and the 95th percentile were 14.3 and 24.0 U/ml,respectively.No cases of pertussis occurred at the end of follow-up.Conclusions The newborns born in Shunyi Women and Children's Hospital of Beijing Children's Hospital are generally lack of protective PT antibody.

Objective To investigate the prevalence rate of hypertension among the elderly population in Shanxi Province. Methods According to the random sampling, 41 residents committees of city blocks and villages of 9 areas (including Taiyuan, Datong, Jinzhong, Yuncheng, et al) of Shanxi Province were extracted as the investigative spots. All the people were older than 55years, and risk factors for hypertension were identified. Results A total of 3702 people were surveyed, including 1,782 men and 1,920 women. The total hypertension prevalence rate was 39.0%(the standardized rate: 39. 5 %), with 38. 7 % in men (the standardized rate: 38. 5%), 39.3 % in women (the standardized rate: 41.2%), and no statistic significance was found between men and women (χ2= 0. 143, P>0. 05). Aging, lacking of knowledge, and obesity were risk factors for hypertension. Conclusions The hypertension in Shanxi Province has a high prevalence rate among the elderly population, a comprehensive intervention should be taken in the prevention of hypertension.

Background: The testis has been reported to be a naturally O 2 -deprived organ, dimethyloxaloylglycine (DMOG) can inhibit hypoxia inducible factor-1alpha (HIF-1α) subject to degradation under normal oxygen condition in cells. Objectives: The objective of this study is to detect the effects of DMOG on the proliferation and differentiation of spermatogonial stem cells (SSCs) in Bama minipigs. Methods: Gradient concentrations of DMOG were added into the culture medium, HIF-1αprotein in SSCs was detected by western blot analysis, the relative transcription levels of the SSC-specific genes were analyzed using quantitative reverse transcription polymerase chain reaction (qRT-PCR). Six days post-induction, the genes related to spermatogenesis were detected by qRT-PCR, and the DNA content was determined by flow cytometry. Results: Results revealed that the levels of HIF-1α protein increased in SSCs with the DMOG treatment in a dose-dependent manner. The relative transcription levels of SSCspecific genes were significantly upregulated (p < 0.05) by activating HIF-1α expression. The induction results showed that DMOG significantly increased (p < 0.05) the spermatogenesis capability of SSCs, and the populations of haploid cells significantly increased (p < 0.05) in DMOG-treated SSCs when compared to those in DMOG-untreated SSCs. Conclusion We demonstrate that DMOG can promote the spermatogenesis activity of SSCs.

Objective To explore correlation between ultrasonic characteristics of femoral artery atherosclerotic plaques and non-ST-elevation acute coronary syndrome (NSTE-ACS).Methods Seventy-two patients with coronary heart disease (CHD) coexisting carotid artery and femoral artery plaques were divided into NSTE-ACS group (n=42) and chronic ischemic syndrome (CIS) group (n=30).The enhanced intensity (EI),volume,shape and internal echo level (EL) of plaques were detected with contrast-enhanced ultrasonic imaging and three-dimensional ultrasound combined with ultrasonic greyscale intensity quantitative analysis,and all parameters were analyzed between the two groups.Results EI and the proportion of irregular artery plaques were higher,and EL was lower in NSTE-ACS group than those in CIS group (all P＜0.05).EI,EL and shape of carotid artery and femoral artery plaques were correlated with NSTE-ACS (all P＜0.05).EI and EL of femoral artery plaques were risk factors for NSTE-ACS (OR=1.222,1.177,P＜0.05).Areas under ROC curve of EI and EL of carotid artery plaques were 0.801 and 0.757 (both P＜0.001),and those of femoral artery plaques were 0.814 and 0.774,respectively (both P＜0.001).Conclusion Neovascularization,shape and internal echo are correlated with NSTE-ACS,and the correlation of femoral artery plaques with NSTE-ACS is more significant than that of carotid artery plaques.Detecting ultrasonic characteristics of femoral artery atherosclerotic plaque can provide references to early identify unstable plaque and screening high-risk patients with CHD.