Objective To observe the effect of heat stress on plasma cGMP and hemodynamics in animals with chronic heart failure. Methods Coronary arteries of twenty-five rabbits were ligated to set up the animal model of heart failure and other five rabbits only received thoractomy as sham group. Eight weeks after coronary artery ligation, they are randomly divided into heat stress (HS) group, control group, HS+L-NAME group, and non-HS+L-NAME group and non-HS+L-Arg group, each group containing 5 animals. Hemodynamic indices and plasma levels of NOS and cGMP were measured. Results Hemodynamics of all 25 rats received operation was poorer compared with the rats of sham group (P

Objective:To explore the relations of adolescents'behavioral problems to genetic and environmental factors.Methods:66 twin pairs aged 12 to 18 years in Chongqing were included in the study.The Youth Self-Report (YSR) was used to evaluate behavioral problems.The blood sample was collected to identify zygosity of twins.Genetic effects were evaluated by comparing the phenotypic correlationamong monozygotic twins(rMZ) and the phenotypic correlation among dizygotic twins(rDZ).Structural equation modeling (SEM) was performed to evaluate the relations of adolescents behavioral problems to the additive genetic factors (A),shared environment factors (C) and individual specific environmental factors (E).Results:MZ correlations of Social problems and Delinquency were less than DZ correlations(rMZ ＜ rDZ).It prompted that data was not suitable for genetic analysis.MZ correlations(rMZ) of any others (including social withdrawal,somatic complaints,anxiety/depression,thinking problem,attention problems,self-destructive/identity problem)were less than 2DZ correlations (2rDZ).It prompted to fit the ACE model.The optimal model was AE model.Among the contribution of the additive genetic factors (A) and individual specific environmental factors (E)to the total variance,the genetic factors ranged from 0.52 to 0.57 and individual specific environmental factors ranged from 0.43 to 0.48 in anxiety/depression and self-destructive/identity problem.For social withdrawal,somatic complaints,thinking problem and attention problems,the genetic factors ranged from 0.17 to 0.45and individual specific environmental factors ranged from 0.55 to 0.83.Conclusion:There is no obvious relationship between genetic effects and adolescent social problems or delinquency.Other behaviors problems (social withdrawal,somatic complaints,anxiety/depression,thinking problem,attention problem,self-destructive/identity problem)are correlated with additive genetic factors and individual specific environmental factors.Additive genetic factors have high-correlation with anxiety/depression and self-destructive/identity problem,and individual specific environmental factors have high-correlation with other factors.

OBJECTIVE To investigate the role of TLR4 signaling pathway in secretory otitis media of rats.METHODS Rats SOM models were made by infusing FS and LPS to the middle otocysts. The rats were killed separately at the 3rd, 5th, 7th, 9th,11th and13th day(5 rats each time). And then the expressions of TLR4, iNOS, IL-8mRNA of middle ear mucosae were detected. NF-?B was also detected through the method of immunohistochemistry. RESULTS The expressions of TLR4mRNA, iNOS and IL-8mRNA in middle ear mucosae of SOM group were significantly higher than that of control group. Immunohistochemistry method showed that the activation of NF-?B in middle ear mucosae was obviously increased in SOM. CONCLUSION The expression of TLR4 was obviously increased in SOM and it activates the NF-?B, promotes the expression of downstream IL-8. That maybe the mechanism which cause SOM.

Aim To investigate the cytotoxic activity of HDAC inhibitor Trichostatin A (TSA)combined with anticancer drugs targeting DNA on T24 bladder cancer cell line.Methods MTT assay was used to detect the inhibitory rate of TSA alone or combined with ADM, MMC and DDP respectively on T24 bladder cancer cell in cancer cell proliferation by administering TSA alone or combined with ADM, MMC and DDP respectively.Jin′s equation was used to evaluate the efficacy of drug combination. Results The growth inhibitory rate of TSA combined with ADM, MMC and DDP respectively was in a concentration-dependent manner. The synergism of TSA combined with MMC was most significant. When administered in lower or moderate concentration, TSA combined with ADM or DDP in lower or moderate concentration demonstrated synergic effect too.Conclusion HDAC inhibitor TSA enhances the cytotoxic activity of anticancer drugs targeting DNA on bladder cancer cells and is promising to be used in chemotherapeutic regimens for advanced bladder cancer.

Objective To investigate the clinical value of serum glycyl-proline dipeptidyl aminopeptidase(GPDA)combined with carcino-embryonic antigen (CEA),carbohydrate antigen724 (CA724),carbohydrate antigen242 (CA242) in the early diagnosis of gastric cancer.Methods Collected in Changan hospital in patients with gastric cancer and atrophic gastritis patients and healthy subjects 60 cases,by TBA-120FR biochemical analyzer glycyl-proline dipeptidyl aminopeptidase (GPDA),chemiluminescence analyzer to detect the levels of serum CEA,CA724 and CA242,analysis of single detection and joint detection and the differences between the positive rate and sensitivity.Results The detection of GPDA in gastric cancer group was significantly lower than that in atrophic gastritis group and healthy control group,the difference was statistically significant (F=69.532,P=0.000).The results of CEA,CA724 and CA242 in gastric cancer group were higher than those in atrophic gastritis group and healthy control group,the difference was statistically significant (CEA:F=59.926,P=0.001;CA724:F=51.056,P =0.001;CA242:F =72.613,P =0.000).Serum GPDA,CEA,CA724 and CA242 single detection positive rate were 70 ％,45 ％,61.7 ％ and 50 ％.Tumor markers CEA,CA724,CA242 positive rate of three joint detection was 75％.Serum GPDA and tumor markers of CEA,the positive rate of CA724 and CA242 combined detection of four was 86.7％.The positive rate of three and higher than that of single detection,the difference was statistically significant (F=49.635,P=0.003).Serum GPDA,CEA,CA724 and CA242 single detection sensitivity was 70.2 ％,50.2 ％,67.3 ％ and 53.2％.Tumor markers CEA,CA724,CA242 three joint detection sensitivity was 85.6％.Serum GPDA and tumor markers CEA,CA724 and CA242 four joint detection sensitivity was 90.3％.The sensitivity was higher than the three items and the individual tests,and the difference was statistically significant (F=52.016,P =0.001).Conclusion GPDA joint CEA,CA724 and CA242 tumor markers detection can improve the positive rate and sensitivity in early diagnosis of gastric cancer,but it will not reduce the diagnostic specificity,the clinical diagnosis of early gastric cancer has important significance and value.

Objective To study the application value of direct digital X‐ray radiography system in the degenerative lumbar insta‐bility .Methods 100 patients with degenerative lumbar instability disease were collected in our hospital ,in which there were L4 ,L5 (80 cases) and L5 ,S1 (20 cases) with degenerative lumbar instability disease .Carestream DRX‐Evolution system was used ,which included conventional horizontal lumbar function photography (control group) and physiological load of lumbar function photography (observation group) .Changes of the displacement or the angle of the lumbar segment on two groups were measured ,and the statisti‐cal software was used to carry on the comparative analysis .Results In 100 patients ,the position and the physiological load position were showed on the sagittal position which were as following :For the lumbar segment of L4 and L5 ,flexion [position (4 .50 ± 0 .25) mm , load position (4 .78 ± 0 .30) mm] ,extension [position (4 .87 ± 0 .22) mm ,load position (5 .18 ± 0 .30) mm] ,and for the lumbar segment of L5 and S1 ,flexion [position (4 .64 ± 0 .24) mm ,load position (4 .91 ± 0 .24) mm] ,extension [position (4 .95 ± 0 .30) mm , load position (5 .30 ± 0 .29) mm];For the intervertebral angle degree of L4 and L5 ,flexion (position 10 .64° ± 0 .29° ,load position 12 .12°± 0 .57°) ,extension (position 11 .57°± 0 .24° ,load position 12 .61°± 0 .28°);For the intervertebral angle degree of L5 and S1 , flexion (position 11 .63° ± 0 .26° ,load position 12 .72° ± 0 .27°) ,extension (position 13 .55° ± 0 .30° ,load position 14 .58° ± 0 .33°) , respectively .The difference between two groups was statistically significant (P< 0 .05) .Conclusion Compared with traditional method ,DR lumbar physiological weight‐bearing functional can more accurately understand the lumbar instability degree ,grading and lumbar positive rate ,which provides the basis for clinical diagnosis and treatment plan .

Objective primary hospitals at the county level in xiaogan City 17 years for the production of scientific papers in qualitative and quantitative statistical analysis,summary of research progress and existing problems in county hospitals,and provides references for research management in local hospitals.Methods Wanfang medicine network included in 1998-2014 year published Xiaogan city 7 county hospital as the object;All biomedical scientific papers published as the first author to statistical analysis.Results 7 County Hospital of xiaogan City 17-year total output articles 1909,General journals 1273articles(66.68％ per cent),Core journal 636 papers (33.31％ per cent).Hanchuan city people's Hospital total the largest number of papers;total 544 articles (28.50％ total),yingcheng hospital quality highest core journal papers and the highest proportion;total 186 (proportion of the total core thesis 29.25 ％),minimum quantity and quality of outputs anlu city people's Hospital,only 15 articles in periodicals of General The core journals and 2 papers (0.89％ of the total number of accounts for the paper,core paper accounted for 0.31％ of the total).On the whole 2006-2009 published papers began to gradually slow growth,The number 2010-2014 entered the stage of rapid growth,but the core papers for slow growth.Conclusions xiaogan city grass-roots scientific articles in recent years in county hospitals are generally presented a trend of rapid growth,but the quality of growth is relatively slow,output quantity and quality distribution imbalances between hospitals.

The incidence of colorectal cancer is high among the elderly. Traditional Chinese medicine (TCM) has been widely used in the treatment for colorectal cancer of old people. However, controlled trials with large sample size evaluating the effect of TCM are rare.

The effect of cholesterol ester transfer protein(CETP) on SR-B1 mRNA expression in mouse liver was investigated.The results demonstrated that CETP transgenic mice showed lower serum total cholesterol and high density lipoprotein-cholesterol levels but higher total cholesterol and cholesterol ester content in liver when compared with wild type mice(P＜0.05).The expression of SR-B1 mRNA in liver of CETP transgenic mice was significantly lower as compared with the control group(P＜0.05).

Objective To study the effects of mild hypothermia on cardiomyocyte contractility improvement after ischemia-repeffusion injury and on the preservation of well-functioning mitochondrial respiratory capability.Methods A total of 50 newborn SD rats 1 ～ 2 days after delivery were sacrificed and their hearts taken to preserved in 4 ℃ cold D-hanks buffer solution with 0.12％ pancreatic proteinase and collagenase and then processed with 37 ℃ water bath to collect the cardiomyocytes cultured in DMEM medium with 10％ FBS for 5 days.The cardiomyocytes of rats were subjected to ischemia/reperfusion,in vitro,by oxygen and glucose deprivation(OGD)/oxygen and glucose restoration(OGR).The cardiomyocytes of rats after ischemia/reperfusion were divided into three groups:control group,hypothemia group and normothermia group.Contractile frequency and velosity were determined before OGD and 0 h,0.5h,1 h,1.5 h and 2 h after OGR.Ultrastructure changes of cardiomyocytes and mitochondrion were observed under transmission electron microscope(TEM)0 h and 2 h after OGR as well as assessment ot respiratory rate and respiratory control rate(RCR)with Clark oxygen electrode in each group.All data were analyzed with statistical software of SPSS 13.0.Results Contractile function of cardiomyocytes in hypothermia group and normothermia group declined to nadir at 0 h after OGR(P =0.000)and the contractile function of cardiomyocytes in hypothermia group was improved one hour later,compared with the normothermia group(P =0.000).Obvious swelling of mitochondrion was observed under TEM in normothermia group with little alteration after OGR.The RCR assessments indicated respiratory function in normothermia group was impaired after OGR(P =0.000)and this may be responsible for contractility dysfunction.Conclusions Mild hypothemia used after ischaemia can optimize the contractility of cardiomyocytes after a normothermia OGR,and the well-functioning respiratory capability of mitochondrion may be preserved in this process.