Objective To study the effects of aged and exercise training on hydroxylysylpyridinoline (HP) crosslinking concentrations of extracellular matrix in right ventricular (RV),left ventricular septum (LVS) and left ventricular free-wall (LVFW) in Fischer 344 rats.Methods We evaluated HP crosslinking concentrations of RV,LVS and LVFW extracellular matrix in young adult versus old Fischer 344 rats using high-pressure liquid chromatography (HPLC).Rats were assigned to either a sedentary control group or an exercise training group.Results HP crosslinking concentrations in LVS [(0.23±0.01) vs.(0.43±0.03)mol HP/mol Col,P＜0.05] and LVFW [(0.22±0.05) vs.(0.51±0.03) mol HP/mol Col,P＜0.05] in old sedentary control rats were elevated compared with adult sedentary rats.In adult exercise training rats,training had no effect on HP crosslinking concentration in any of the three regions of the heart.As compared with old sedentary rats,HP crosslinking concentrations in LVS [(0.22±0.06) mol HP/mol Col vs.(0.43±0.03)mol HP/mol Col,P＜0.05] and LVFW[(0.21±0.07)mol HP/mol Col vs.(0.51±0.03) mol HP/mol Col,P＜0.05] were decreased in old exercise training rats.Conclusions HP crosslinking concentration are increased with aging in LVS and LVFW of rats,and exercise can prevente this age associated change.

Objectlve:To assess the influential factors of decision-to-delivery inteval (DDI) in caesarean section, and its influence on neonatal outcomes.Methods:472 caesarean sections were divided into two groups according to Lucas's classification :the emergency caesarean sections as group 1 (291) ; and the e-lective caesarean sections as group 2 (181).It was divided into DDI ≤30 min group and DDI > 30 mir group in group 1.A retrospective study was performed in DDI, influential factors of DDI, neonatal Apgar score and umbilical arterial blood gas.Results: ①The mean DDI was 35.5±11.6 min in group 1,in wgich DDI≤30 min was 210 cases (72.2%) and 49.3 ±22.8 min in group 2, in which DDI≤30 min was 86 cases (47.5%).②IN group 1,umbilical artery pH and Apgar core at 1 min after birth could be improved sigbificantly in the cases of DDI ≤ 30 min (P<0.05) , but no correlation was found between the DDI and Apgar scrore at 5 min ,as compared with DDI ＞30MIN CASES(p＞0.05).③It was mainly influenced by time taken to get the patient into operation room in DDI >30 min (56 cases, 69.1 %).Concluslons :The recommended DDI ≤30 min is not routinely achieved even in emergency caesarean sections.Shortening DDI as far as pos-sible might improve the neonatal outcome.

Objective To study the relationship of left-ventricular function change with circulation levels of CD34+ cells,toll like receptor 2 (TLR2),TLR4 and high sensitivity C-reactive protein (hs-CRP)in elderly isolated systolic hypertension.Methods According to New York Heart Association (NYHA)class,left ventricular ejection fraction (LVEF) and systolic blood pressure (SBP),the healthy subjects and the patients were divided into 5 groups:control 30 cases,class Ⅰ 25 cases,class Ⅱ 29 cases,class Ⅲ 24 cases and class Ⅳ 20 cases.The expressions of circulating CD34 + cells,TLR2 and TLR4 in the patients and healthy subjects were measured by flow cytometry.The level of hs CRP was measured by nephelometry immunoassay.Results In class Ⅳ versus class Ⅰ,the levels of LVEF[(26.4±2.1)％vs.(40.5±3.6)％]and CD346 [(0.5±0.2) × 109 vs.(2.5±0.4) ×109 /L]were decreased,while SBP[(211.1±8.4)mm Hg vs.(151.1±5.9)mm Hg],TLR2 [(8.0±1.0) vs.(3.2±1.1)MFI],TLR4 [(6.4±1.3)MFT vs.(2.4±1.1)MFI]and hs-CRP [(14.7±0.3)mg/L vs.(4.9±0.6)mg/L]were increased (all P＜0.05).Conclusions The lower levels of CD34+ cells,higher TLR2,TLR4 and hs CRP levels are correlated with increasing SBP,decreasing LVEF and higher NYHA class.

Objective To evaluate the expression and clinical significance of cyclin dependent kinase (CDK)-activating kinase (CAK) complex including CDK7, cyclin H and accessory protein menage a trios 1 (MAT1) in estrogen receptor-positive breast cancer.Methods A total of 40 patients with estrogen receptor-positive breast cancer from Department of Galactophore, Baoji Maternal and Child Care Service Centre of Shaanxi Province were investigated in this study.Breast cancer tissues and adjacent normal tissues were obtained from patients undergoing surgery.The mRNA expressions of CDK7, cyclin H and MAT1 in two types of tissues were measured by real-time fluorescent quantitative (qRT)-PCR, and their correlations with clinicopathologic features of patients were analyzed.Results The expressions of CDK7, cyclin H and MAT1 in cancer tissues were 2.54±0.78, 2.21±0.56 and 2.46±0.58, while those in adjacent normal tissues were 1.26±0.30, 1.16±0.42 and 1.17±0.39, and there were significantly differences between different types of tissues (t=9.654, P<0.001;t=9.433, P<0.001;t=11.741, P<0.001).The higher expressions of cyclin H and MAT1 in patients′ cancer tissues had the lower clinical stage, with significant correlations (U=3.17, P=0.01;U=2.53, P=0.01).In addition, the tumors were smaller in patients with higher expression levels of MAT1 (χ2=14.16, P=0.01).Conclusion The expressions of CAK complex CDK7, cyclin H and MAT1 are elevated in estrogen receptor-positive breast cancer patients.Cyclin H and MAT1 are closely associated with clinical grade, and MAT1 is also significantly associated with tumor size.

The association of polymorphisms of calcium channel?1 subunit ( Cav1.1 ) gene ( - 1551T/C at exon 11 ) with thyrotoxic periodic paralysis (TPP) was investigated by PCR-RFLP.The distributions and frequencies of - 1551TC + CC genotype and C allele in TPP group were significantly higher than those in hyperthyroidism (HT) and normal control (CON) groups.There was no statistic difference between HT and CON groups.Cavl.1 gene - 1551TC + CC genotype and allele may contribute to the development of TPP in male HAN population from North China.

Objective To identify main problems and related factors existing in monitoring and evaluation(M&E)of HIV/AIDS prevention and control in China through status quo investigation and problem analysis.Methods Data collected from the existing information and field investigations were analyzed with horizontal,longitudinal comparison and GAP analysis to identify current situation and problems.Results 1)Basic situation in the seven aspects,including;institution,staff,funding,use of indicators,data management,result feedback and operation of M&E was defined;2)Problems in the five aspects,including coordination mechanism,staff ability,use of indicator system,data analysis and use and level of M&E were identified.Conclusions In order to improve the overall quality of M&E of HIV/AIDS prevention and control in this country,a unified nationwide M&E system of HIV/AIDS prevention and control should be established.

This study was to investigate the role of urethral catheter balloon dilatation(F16)in the treatment of intrauterine adhesion after hysteroscopic surgery.A total of 523 patients with severe intrauterine adhesion(IUA)following hysteroscopic surgery underwent urethral catheter balloon dilatation during April 2000 and December 2005.During 3～15 months'follow-up,normal menses were seen in 340 patients (65.0％),nearly normal menses in 165 patients(31.5％),and menoschesis in 18 patients(3.4％).302 patients showed normal uterine cavity with no recurrent endometrial adhesion,203 patients(38.8％)were found slight IUA,and only 18 patients(3.4％)still presented with severe adhesion.No operative complication was reposed.and the pregnant rate was 47.6％.In summary.urethral catheter balloon dilatation.based therapeutic strategies is safe.effective and beneficial.

Objective To study the relationship of levels of circulating endothelial microparticles (EMP62E, EMP31) and high-sensitivity C-reactive protein (hs-CRP) with severity of chronic left heart failure in elderly patients. Methods According to New York Heart Association (NYHA) class and left ventricular ejection fraction (LVEF), the healthy subjects and the patients were divided into five groups: control group [LVEF: (63.97±4.65)%], classⅠ group [LVEF: (42.67±2.06)%], classⅡ group [LVEF: (34.26±3.17)%], class Ⅲ group [LVEF: (29.05±1.07)%] and class Ⅳ group[ LVEF:(25.17±1.42)%] . The levels of circulating EMP62E, EMP31 and hs-CRP of the patients and healthy subjects were measured by flow cytometry and nephelometry immunoassay, respectively. Results There were significantly differences in EMP62E, EMP31 and hs-CRP between class Ⅳ group and classⅠ group P＜0.01) EMP62E [(1092.7 ± 102.8) counts/μl vs. (291.0±21.9) counts/μl], EMP31 [(1596.1±46.3) counts/μl vs. (477.8±40.3) counts/μl] and hs-CRP [(14.74±0.07) mg/L vs. (4.86 ± 0.09) mg/L]. The levels of circulating EMP62E, EMP31 and hs-CRP were gradually elevated significantly along with the increased severity of chronic left heart failure in elderly. Conclusions The upregulation of circulating EMP31, EMP62E and hs-CRP may contribute to the development of chronic heart failure in elderly.

Animals ; Brain Ischemia ; metabolism ; Caspase 3 ; metabolism ; Fas Ligand Protein ; metabolism ; Hippocampus ; metabolism ; Mice ; Mice, Inbred C57BL

Objective To probe the advantages and characteristics of imaging on dual-energy CT boneless and digital sub- traction brain angiography through comparative analysis. Methods Siemens 64-slice dual-source spiral CT and double high pressure syringe; The 200 patients were randomly divided into dual-energy group(n=100) and DSACT group(n=100); Every patient was injected 50 ml contrast medium and 50ml normal saline, injection rate was 4ml/s. Results The groups of cere- bra-vascular imaging without interference, and completely boneless; but experimental group has more boneless defects and vascular surface definition less. The cerebral arteries were interfered by the venous shadow in dual-energy group, and the dual-energy group received low-dose radiation. Conclusion The DSACT imaging quality is superior to dual-energy CT boneless imaging. The radiation dose of the dual -energy CT is lower than DSACT.