Association of Toll-like receptor 2 and 4 gene polymorphisms with risk of coronary atherosclerotic artery disease in Hunan Han population / 中南大学学报(医学版)

Objective:To explore Toll-like receptor 2 (TLR2) and TLR4 polymorphism in Han people from Hunan region and its association with coronary atherosclerotic heart disease.Methods:Sanger sequence and statistical analysis were performed to identify the polymorphism of TLR2 and TLR4 genes in 347 unrelated Hunan Han subjects,including 180 healthy people (control group) and 167 patients with coronary atherosclerotic heart disease (coronary atherosclerotic heart disease group).Results:There was no significant difference in the genotype frequency and allelic frequency for TLR2 SNP2258G＞A and TLR4 SNP896A＞G between the 2 groups (P＞0.05),while there was significant difference in the TLR4 SNP1196C＞T between the 2 groups (P＜0.05).Conclusion:TLR4 SNP 1196C ＞T polymorphism is associated with coronary atherosclerotic heart disease in Chinese Han populationin in Hunan region.

Cross-sectional study on high-normal blood pressure and chronic kidney disease in occupational physical examination population in Changsha / 中南大学学报(医学版)

OBJECTIVE@#To investigate the relationship between high-normal blood pressure and chronic kidney disease (CKD) in occupational physical examination population in Changsha.@*METHODS@#With a convenient sampling method, a cross-sectional survey of representative sample of 11 274 white collar workers was conducted in Changsha between March 2011 and May 2011 in a large comprehensive hospital. All subjects were assigned into 4 groups: a normal blood pressure group, a high-normal blood pressure group, an undiagnosed hypertension group, and a diagnosed hypertension group. Anthropometry, blood pressure, blood sample and urine sample were measured with standard instruments and methodology for all the subjects. Multiple logistic regression analysis was used to identify risk factors for CKD.@*RESULTS@#The prevalence of CKD in the normal blood pressure, high-normal blood pressure, undiagnosed hypertension, and diagnosed hypertension were 3.31%, 6.60%, 11.78%, and 17.35%, respectively. The prevalence of CKD in males was significantly higher than that in females (P<0.01). For males with high-normal blood pressure, the CKD risk was significantly greater (OR, 1.30; 95% CI:1.03 - 1.63) than those with optimal blood pressure. The logistic regression analysis showed that there was an additive effect of hyperuricemia on CKD risk in men with high-normal blood pressure compared with men with optimal blood pressure (OR, 2.25; 95% CI, 1.59 - 3.19; P<0.05).@*CONCLUSION@#The prevalence of CKD in people with the high-normal blood pressure is 6.60% in occupational physical examination population in Changsha. CKD is a high risk for men with highnormal blood pressure and hyperuricemia is an independent risk factor.

Effect of ghrelin on angiotensin Ⅱ induced human umbilicus vein endothelial cell oxidative stress and endothelial cell injury / 中南大学学报(医学版)

Objective To determine the effect of ghrelin on protecting the human umbilical vein endothelial cells (HUVEC) from injury by angiotesin Ⅱ(AngⅡ) in vitro. Methods (1)HUVEC was incubated for 24 h with AngⅡ whose final concentration in the medium varied from 10-9 to 10-6mol/L or pretreated with 10-9to 10-6mol/L ghrelin for 2 h before incubation for 24 h with AngⅡwhose final concentration in the medium was 10-6mol/L. HUVECs were harvested to measure the cell vitality and cell apoptosis. The cell vitality was determined by MTT and cell apoptosis rates were measured by Annexin V-FITC apoptosis detection kit. (2)HUVECs were incubated for 3,6,12,or 24 h with 10-9,10-8,10-7,or 10-6mol/L AngⅡ, respectively. Before HUVECs were incubated with 10-6 mol/L AngⅡfor 24 h, ghrelin (10-9,10-8,10-7, and 10-6 mol/L) was used to pretreat the cells for 2 h. Growth hormone secregogue receptor 1a blocker [D-Lys3]GHRP-6 was added to the cells which were incubated for 24 h with 10-6mol/L AngⅡ and pretreated with 10-6 mol/L ghrelin for 2 h. Cell reactive oxygen species were measured by dichlorofluorescin (DCF) fluorescence probe method. (3)HUVECs were incubated for 24 h with 10-9,10-8,10-7, or 10-6mol/L AngⅡ and ghrelin, respectively,and then were incubated with 10-6mol/L of AngⅡ for 3,6,12,or 24 h. Furthermore,HUVECs were pretreated with 10-9,10-8,10-7, or 10-6mol/L ghrelin for 30 min,1 h,or 2 h, and then were incubated with the inhibitor of mitogen-activated protein kinase /extracellular regulated kinase (MAPK/ERK1/2),PD98059, the inhibitor of phosphoinositide-3-kinase/serine threonine kinase( PI3K/Akt)wortmannin, and [D-Lys3]GHRP-6 for 24 h. NO production was compared among groups. HUVECs were pretreated with ghrelin,PD98059, wortmannin, and [D-Lys3]GHRP-6 for 2 h and co-cultured with 10-6mol/L AngⅡfor 24 h,or pretreated with ghrelin plus PD98059, wortmannin, and [D-Lys3]GHRP-6 before incubation with AngⅡfor 24 h. NO was measured in the endothelial cell supernatants by Griess method. (4)HUVECs were cultivated with blank or AngⅡwith or without pretreatment with ghrelin or both ghrelin and wortmannin. The protein expression of eNOS and phospho-protein expression of Akt were measured by Western blot analysis. Results AngⅡinjuried the endothelial cell vitality,increased the cell apoptosis rates in HUVECs, and decreased NO production in HUVEC supernatants,whereas ghrelin protected HUVECs from AngⅡ injury. Ghrelin decreased the reactive oxygen species in HUVECs induced by AngⅡ. The effect could be attenuated by [D-Lys3]GHRP-6 pretreatment; PD98059 alleviated AngⅡ inhibition of NO production in HUVEC supernatants. Wortmannin and [D-Lys3]GHRP-6 could abolish protection of ghrelin from reducing NO production in HUVEC supernatants. AngⅡreduced the expression of eNOS,but ghrelin increased eNOS expression. Wortmannin could cancel this effect of ghrelin. Ghrelin increased p-Akt expression and reached the peak in 10 and 20 min. Conclusion Ghrelin may protect HUVECs from AngⅡinduced injury, which is related to decreasing oxidative stress, increasing the protein expression of eNOS, and activating PI3K/Akt signal pathway through GHSR1a receptor.

Effect of endothelial progenitor cells on the proliferation of co-cultured vascular smooth muscle cells / 中南大学学报(医学版)

Objective To explore the effect of endothelial progenitor cells (EPCs) on the proliferation of co-cultured rat vascular smooth muscle cells(VSMCs). Methods Mononuclear cells were isolated from fresh cord blood by 6% hydroxyethyl starch (HES) and density gradient centrifugation. Isolated mononuclear cells were cultured in EGM-2 medium supplemented with 20% fetal bovine serum (FBS), VEGF,bFGF and other growth factors. Biological features of EPCs were observed at different time points, and EPCs were identified by morphology, fluorescence double-staining and flow cytometry. Indirect immunofluorescence was performed to analyze the expression of α-SM-actin, calponin of VSMCs special antigen. Co-culture system of EPCs and VSMCs was established by transwell permeable support. FBS (20%) was used to stimulate the proliferation of VSMCs. In a VSMCs/EPCs co-culture system, the DNA synthesis ability, total protein level and cell cycle of VSMCs were determined by BrdU marking method,protein quantitation and flow cytometry after co-culture for 6, 12, 24,48 and 72 h. Results After co-culture for 12, 24, 48, and 72 h, the DNA synthesis ability and total protein level of VSMCs significantly decreased compared with the control group(P＜0.05). Flow cytometry showed that the percentage of S phase of VSMCs in VSMCs/EPCs co-cultured group significantly decreased and the percentage of G_1 phase increased markedly compared with the control group(P＜0.05). The maximal inhibitory effect was observed at 48 h. Conclusion Early EPCs could inhibit the proliferation of VSMCs.

The analysis of pharmacotherapy for benign prostatic hyperplastic in outpatients in geriatrics department of three hospitals in Changsha / 中华老年医学杂志

Objective To understand the elementary information and pharmacotherapy for benign prostatic hyperplasia (BPH) in outpatients in geriatrics department of three hospitals. Methods The outpatients diagnosed as BPH were investigated by daily BPH diagnosis report form, BPH medical-care requirement questionnaire, international prostate symptom score (IPSS) questionnaire and BPH quality of life scale (BPHQLS) in odd months. Results There were 657 outpatients in the three hospitals, including 456 males and 201 females. 289 patients were diagnosed as BPH, accounting for 44% of all outpatients and 63.4% of male patients. The average age of BPH patients was (77.2±5.7)years, the mean volume of prostate was (41.44 ± 21.00)ml, the median value of prostate specific antigen (PSA) was 2.24 μg/L, the mean maximum flow rate was (12. 65± 5.74)ml/s, and the average of IPSS and BPHQLS were 14.8±8. 11, 2. 56±1.36, respectively. The percentage of pharmacotherapy was 66.21% (96/145), and the rates of a-receptor blocker monotherapy and 5α-reduetase inhibitor monotherapy were 6.90% and 8. 97%, respectively. The percentage of drug combination was 26.90%. Conclusions BPH outpatients in geriatrics department of the three hospitals are at high risk, and most of them receive drug therapy. The drug choice is reasonable.

Mononuclear cells were induced into endothelia progenitor cells by VEGF165 and bFGF / 中国医师杂志

Objective To determine the biological traits and optimal condition for the induction and differentiation of endothelial progenitor cells from peripheral blood in healthy adults. Methods Mononuelear cells were isolated from peripheral blood of healthy adults by Ficoll-density eentrifugation. The isolated ceils were cultured in 1640 medium supplemented with VECF165 and bFGF. The EPC specific surface mark CD34 and KDR were assessed by fluorescence activated cell sorter(FACS)analysis: EPC were characterized as adherent cells double positive for DiL-acLDL uptake and lectin binding by direct fluorescent staining under a hser scanning confocal microscope. EPC migration were assayed by MTr assay. Result The number and migration ability of EPC were increased by VEGFl65 and bFGF. Conclusion Endothelial progenitors cells can be derived from mononuclear cells of peripheral blood at specific conditions.

Decreased plasma urotensin Ⅱ levels inversely correlate with extent and severity of coronary artery disease / 老年心脏病学杂志（英文版）

Objective To determine the plasma urolensin Ⅱ(UⅡ) levels in various types of coronary heart disease and to clarify how the plasma UⅡ levels correlate with the clinical presentation, extent and severity of coronary artery atherosclerosis (CAD). Methods: One hundred and three aged patients undergoing elective diagnostic coronary angiography for proven or clinical suspected coronary heart disease were enrolled in this study. The extent and severity of coronary artery disease were evaluated by vessel score and Gensini score, respectively. Plasma UⅡ levels were measured by radioimmunoassay. Results: The plasma UⅡ levels in the patients with modest to severe coronary stenosis (3.03±0.34 pg/ml, 1.83±0.67 pg/ml) were significantly lower than that in subjects with normal coronary artery (4.80±1.11 pg/ml, P＜0.001). The plasma UⅡ levels in patients with coronary heart disease were also significantly lower than that in patients with insignificant coronary stenosis (P ＜ 0.001). Compared to patients with stable angina pectoris, plasma UⅡ levels in patients with acute coronary syndrome were significantly decreased (1.89±0.51 pg/ml vs 2.42±0.77 pg/ml, P＜ 0.001). Plasma UⅡ levels were found to be negatively correlated with the severity of coronary artery stenosis (r = -0.488, P＜0.001), as well as the vessel score (r = -0.408, P＜0.05) in the patients with CAD. Conclusion: Significant inverse correlations exist between the plasma UⅡ levels, and the extent and severity of coronary artery stenosis. These findings suggest that plasma UⅡ contribute to the development and progression of coronary artery stenosis, and may be a novel marker to predict clinical types, as well as the extent and severity of coronary artery disease in the patients.

Influences of psycho-social factors in the treatment of the elderly patients with hypertension / 中华老年医学杂志

Objective To study the influences of psycho-social factors in the treatment of the aged patients with hypertension. Methods Aged in-patients with hypertension were divided into two groups according to their improvement: 148 reached the standard and 62 did not reach the standard. Their psycho-social factors were assessed by self-rating depression scale(SDS), self-rating anxiety scale(SAS), life events scale (LES) and social support scale. Results (1)The percentages of depression (7.4% vs 32.2%, P

Apoptosis, myocardial fibrosis and angiotensin II in the left ventricle of hypertensive rats treated with fosinopril or losartan / 中华医学杂志(英文版)

<p><b>OBJECTIVE</b>To investigate the different effects of an angiotensin II type 1 (AT(1)) receptor antagonist, losartan, and an angiotensin converting enzyme (ACE) inhibitor, fosinopril, on cardiomyocyte apoptosis, myocardial fibrosis, and angiotensin II (Ang II) in the left ventricle of spontaneously hypertensive rats (SHRs).</p><p><b>METHODS</b>SHRs of 16-week-old were randomly divided into 3 groups: SHR-L (treated with losartan, 30 mg.kg(-1) x d(-1)), SHR-F (treated with fosinopril, 10 mg x kg(-1) x d(-1)), and SHR-C (treated with placebo). Each group consisted of 10 rats. Five rats, randomly selected from each group, were killed at the 8th and 16th week after treatment. Cardiomyocyte apoptosis, collagen volume fraction (CVF), perivascular collagen area (PVCA) and Ang II concentrations of plasma and myocardium were examined.</p><p><b>RESULTS</b>Compared with the controls at the 8th and 16th week, systolic blood pressures were similarly decreased in both treatment groups. Left ventricular weight and left ventricular mass indexes were significantly lower in both treatment groups. However, the latter parameter at the 16th week was reduced to a less extent in the fosinopril group than that in the losartan group. Compared with the controls, cardiomycyte apoptotic index was significantly reduced at the 8th week only in the fosinopril group, and at the 16th week in both treatment groups. The index of the fosinopril group was lower than that of the losartan group at the latter endpoint examined. Compared with the controls, the left ventricular collagen volume fraction and perivascular collagen area at the 8th and 16th weeks were significantly reduced in the SHRs treated with either fosinopril or losartan. However, the collagen volume fraction at the latter endpoint in the fosinopril group was lower than that in the losartan group. Compared with the controls at endpoints, plasma and myocardium Ang II levels were significantly increased in the losartan group. However, plasma Ang II concentrations were not altered, and myocardium Ang II concentrations at the 8th and 16th weeks were significantly reduced in the fosinopril group.</p><p><b>CONCLUSIONS</b>Both losartan and fosinopril could effectively inhibit cardiomyocyte apoptosis and myocardial fibrosis and reverse heart hypertrophy. Fosinopril may be more effective in these cardioprotective effects, suggesting that the effects of both drugs are related to the inhibition of myocardium renin-angiotension-aldsterone system.</p>

Mental Health and Related Factors of Elderly Patients with Chronic Diseases / 中国临床心理学杂志

Objective: To explore the mental health status and related factors of elderly patients. Methods:150 patients aged 60 years above with chronic diseases were measured by SCL-90. Results: 77.33% of the patients reported significant mental symptoms Multiple linear regression showed that financial condition, physical diseases and housing conditions were major factors that affected the patients' mental health. Conclusion: To improve elderly patients' financial condition, housing conditions and physical health may be important for improving their mental health status.

Experimental study on restenosis after percutaneous coronary intervention: effects of fenofibrate on proliferation and apoptosis of cultured human umbilical vein endothelial cells / 中国介入心脏病学杂志

Objective To establish the cell model of restenosis in vitro and investigate the effects of fenofibrate on the prevention and treatment of the restenosis.Methods Human umbilical vein endothelial cells(HUVECs) were cultured in vitro.The study was designated to 5 groups:(1) control group,(2) LPC group,(3) low-concentration fenofibrate(10 ?mol/L) group,(4) midium-concentration fenofibrate(50 ?mol/L) group,and(5) high-concentration fenofibrate(100 ?mol/L) group.Proliferation and apoptosis of HUVECs were assessed by MTT assay,flow cytometry(FCM) and fluorescence microscopy respectively.Results Compared with the control group,LPC could inhibit the growth and induce apoptosis of HUVECs as well as decrease NO production in HUVECs.Fenofibrate could increase the proliferation and decrease the apoptosis of HUVECs,and also enhance NO production of HUVECs.Conclusion Fenofibrate could improve proliferation and reduce apoptosis and enhance NO production of HUVECs through lysophosphatidylcholine,which may be an important route for fenofibrate to prevent and treat the restenosis after percutaneous coronary intervention.

Life Quality and Related Factors of the Chronic Elderly Patients / 中国心理卫生杂志

Objective: To study the quality of life of chronic elderly patients Method: 150 chronic patients aged 60 or above were assessed with SCL-90 (symptom checklist-90), SDSS (social deficit screening scale), ADL (activity of daily living) and QOL (quality of life), their demographic data were also collected Results: Men's social function was poorer than women's, but their quality of life had no significant difference to women's The quality of life in our sample differed with different age, educational degree, family conditions, occupations and incomes Conclusion: Life quality of chronic old patients is related to their demographic characters