Objective To summarize the onset and the management of serious responsiveness during the tilt table test (TTT), and the prevention measures. Methods Thirty six elderly patients (26 males and 10 females, aged between 60 70) were tested with a tilt angle of 70 degrees for a maximum of 45 minutes and then processed with isoproterenol provocative tilt testing. ECG and blood pressure were monitored during the test and the peripheral intravenous cannula were maintained for all patients with normal saline. Results Twenty one of the 36 patients were defined as positive including 10 showing serious responsiveness. Of the 10 patients, 3 had a history of atherosclerosis involving internal carotid arteries; among the 3 with bradycardia, 2 were associated with II? A V block, and another one was with chronic atrial fibrillation. The serious reponsiveness included asystole for more than 5 seconds(3 cases) , serious bradycardia for more than 1 minute(3 cases) , and serious hypotension for more than 1 minute (4 case), respectively. Those with serious responsiveness were managed with returning to supine position, or intraveneous atropine, or CPR (2 cases), or oxygen given(4 cases). Only 2 hypotensive patients recovered gradually in 10 minute emergent management while others recovered rapidly and with no complication. Conclusions TTT may result in serious responsiveness especially in elderly patients though it is non invasive method. Therefore, proper patient selection according to the indications, control of isoproterenal infusion and close observation of vital signs are important for a safe consequence.

As a kind of pesticide, fungicide and preservative, PCP had been used extensively in industry, agriculture and domesticity throughout the world. PCP contamination is generally associated with sediments or soil, it can also concentrate in organism. Regarding the character of high toxicity, long persistence and difficult to degrade, PCP has become a kind of conspicuous environmental pollutant because of widely use and inappropriate disposal. In the contaminated area, PCP can be detected in the water, soil and the body of organisms. PCP can affect human health through directly exposure or through food chain. The absorbed PCP can be stored in liver, kidney and fat,it can also increase the incidence rate of tumork, disturb the endocrine system, affect immune function,inhibit reproduction and development. PCP not only has a direct impairment on human body but also shows a potential impact in genetics.

Objective To evaluate the clinical application value of Sofia Influenza A+B fIA in detecting flu virus A and flu virus B.Methods Flu virus A and flu virus B was detected in 168 samples of nasopharyneal secretions which collected from children with influenza infection by Sofia Influenza A+B FIA,GICA and RT-PCR methods.Results Sofia Influenza A+B FIA positive detection rate was 17.86%(30/168),higher than GICA method.Compared with RT-PCR,its sensitivity and specificity for flu virus A and flu virus B were 83.3%,100% and 71.4%,100% respectively.Conclusion Sofia Influenza A+B FIA is a rapid clinical application method with high sensitivity and specificity.

Objective To research the function of hypoglycemic and antiobesity of L-Arabinose in New Zealand rabbit. Methods Thirty-two New Zealand white rabbits were randomly divided into 4 groups, 8 rabbits in each group. The control group was fed with high fat and high sucrose diet only. L-Arabinose group was fed with high fat and high sucrose diet along with L-Arabinose, the dosage were 0.308 5, 0.617, 0.925 5 g/kg respectively. After fed for two months, all groups were given L-Arabinose, and blood glucose was detected after orally given sucrose 0, 0.5, 2 h. After intervention of L-Arabinose for one month, the data of weight, food intake, stool quantity and the fat index were observed. Results L-Arabinose decreased significantly sucrose absorption, lower the fasting glucose level and the data of area-under-curve (AUC) significantly. Conclusion L-Arabinose proved to be highly effective in preventing the rise of circulating glucose and fat.

Objective To prolong the shelf life of RBCs stored at non-4℃, and improve the ability of blood supplying during wartime. Methods 12 bags of packed RBC were collected from 12 volunteers presenting blood, respectively, and each was averagely divided into 5 parts(groups): combination group, new solution group, ammonia group, control group and 4℃ group. The fist 4 groups were stored at room temperature, and were tested for ATP concentration daily. 4℃ group was stored at 4℃, and RBC ATP concentration was measured at the end of its shelf life, which served as a critical ATP concentration. When RBC ATP concentration of the fist 4 groups decreased to the level of critical ATP, the time of preservation was their shelf life. 6 bags of packed RBC were added the same solution as the combination group, and each was averagely divided into 4 parts(groups)after stored at room temperature for 12 days, which were washed for 0, 5,10 and 15min before centrifugation, respectively. The residual ammonia and the recovery ratio of RBC were measured after washing. Results The shelf life of combination group,new solution group,ammonia group and control group was 12,6,6 and 5 days, respectively. The residual ammonia could be effectively cleaned up after either washing 4 times with 5 min balance time or 3 times with 10 or 15 min balance time. The recovery ratio of RBC was 88.5% and 83.1% after washing 3 and 4 times, respectively. Conclusion The combination of new solution and ammonia was a good additive solution for RBC preservation at non-4℃, and the residual ammonia can be cleaned up using normal saline.

OBJECTIVE Basic fibroblast growth factor (bFGF) and platelet-derived growth factor (PDGF) produced by hepatocellular carcinoma (HCC) cells are responsible for the cell growth. Accumu?lating evidence shows that insulin-like growth factor-binding protein-3 (IGFBP-3) suppresses HCC cell proliferation in both IGF- dependent and independent manners. The present study is to investigate whether treatment with exogenous IGFBP-3 inhibits bFGF and PDGF production and the cell proliferation of HCC cells. METHODS Cell Counting Kit 8 assay were designed to detect HCC cell proliferation, transcription factor early growth response- 1 (EGR1) involving in IGFBP- 3 regulation of bFGF and PDGF were detected by RT-PCR and Western blot assays. Western blot assay was adopted to detect the IGFBP- 3 regulating insulin- like growth factor 1 receptor (IGF- 1R) signaling pathway. RESULTS The present study demonstrates that IGFBP-3 suppressed IGF-1-induced bFGF and PDGF expression while it does not affect their expression in the absence of IGF-1. To delineate the underlying mechanism, Western-blot and RT-PCR assays confirmed that the transcription factor early growth response protein 1 (EGR1) is involved in IGFBP-3 regulation of bFGF and PDGF. IGFBP-3 inhibition of type 1 insulin-like growth factor receptor (IGF1R), ERK and AKT activation is IGF- 1- dependent. Furthermore, transient transfection with constitutively activated AKT or MEK partially blocks the IGFBP-3 inhibition of EGR1, bFGF and PDGF expression. CONCLUSION In conclusion, these findings suggest that IGFBP- 3 suppresses transcription of EGR1 and its target genes bFGF and PDGF through inhibiting IGF- 1-dependent ERK and AKT activation. It demonstrates the importance of IGFBP-3 in the regulation of HCC cell proliferation, suggesting that IGFBP-3 could be a target for the treatment of HCC.

G protein-coupled receptor kinase 2 (GRK2), as a key Ser/Thr protein kinase, belong to the member of the G protein-coupled receptor kinase (GRK) family. The C-terminus of GRK2 including a plekstrin homology domain and the N-terminus of GRK2 including the RGS homology domain with binding sites for several proteins and lipids such as G protein-coupled receptors (GPCRs), G protein, phospholipase C, phosphatidylinositol 4,5-bisphosphate, extracellular signal-regulated kinase, protein kinase A and Gβγ, which can regulate the activity of GRK2. GRK2 can regulate GPCR desensitization and internalization by phosphorylating the GPCR, promoting the affinity of binding to arrestins, and uncoupling the receptors from G proteins, which play an important role in maintaining the balance between the receptors and signal transduction. Previous studies have indicated that cardiac GRK2 overexpression can promote the phosphorylation of β-adrenergic receptor (βAR) leading to βAR desen?sitization and internalization, which play a pivotal role in inducing heart failure (HF)-related dysfunction and myocyte death. GRK2, as a regulator of cell function, is overexpression in hypertension. Overex?pression GRK2 can inhibit Akt/eNOS signaling pathway and decreased the production and activation of eNOS leading to endothelial dysfunction. Collagen-induced arthritis induces the upregulation of GRK2 expression in fibroblast- like synoviocytes. In this review, we mainly discussed the evidence for the association between GRK2 overexpression and various diseases, which suggests that GRK2 may be an effective drug target for preventing and treating heart failure, hypertension and inflammatory disease.

OBJECTIVE To investigate the effect of furanodiene(FDE),a diterpene derived from the medicinal plant Zedoary,on apoptosis of human gastric cancer MGC-803 cells induced in vitro. METHODS MGC-803 cells were treated with FDE 46.29~740.74μmol·L-1 for 24,48 and 72 h,and the cell viability was detected with MTT assay. Cell morphology was observed by light microscopy and Hoechst33342 staining. Flow cytometry was used to detect cell apoptotic rate and cell cycle. Rh123 staining and fluorescence probe DCFH-DA were employed to detect the changes in mitochondrial membrane potential (MMP) and reactive oxygen species(ROS). RESULTS MTT Results showed that FDE 46.29-740.74μmol · L-1 exhibited significantly higher cytotoxicity to gastric cancer MGC-803 cells. IC50 for MGC-803 of 24,48 and 72 h treatment was 347.91,257.41 and 101.01μmol·L-1,respectively. Treatment with FDE 92.58-370.32μmol·L-1 for 24 h also caused significant morphological changes in MGC-803 cells. AnnexinⅤ-FITC/PI double staining showed that the apoptotic rate increased after FDE 92.58-370.32μmol·L-1 treatment for 24 h(P<0.05). FDE enabled MGC-803 cell cycle arrest in S phase. DCFH-DA staining showed that FDE resulted in an increase in intracellular ROS levels(P<0.05) when PDE concentration was 370.37μmol·L-1(P<0.05). MMP decreased after FDE treatment when PDE concen?tration was 370.37μmol·L-1(P<0.05). CONCLUSION FDE Possesses potent tumor selected toxicity and can induce apoptosis of MGC-803 cells through cell cycle arresting,which is related to inhibition of DNA biosynthesis.

Objective To investigate the relationship between the content of stromal cell-derived factor-1 (SDF-1) in myocardium in different period of myocardial infarction and left ventricular function.Methods Twenty three Chinese miniature pigs were randomly divided into the experimental group and the control group.The swines in experimental group were prepared as acute myocardial infarction model by ligating anterior descending coronary artery and were randomly divided into 6 subgroups according to the different time points after infarction.The left ventricular end-diastolic diameter (LVDd),left ventricular ejection fraction (LVEF) and left ventricular fraction shortening (LVFS) were measured respectively.Global circumferential strain (GCS) and global radial strain (GRS) of left ventricle were measured.The content of SDF-1 were also measured by real-time quantitative PCR.Results Compared with the control group,SDF-1 levels were significantly elevated,and LVEF,LVFS,GCS and GRS were reduced.However,LVDd were significantly increased.The content of SDF-1 and GCS has a negative correlation (r =-0.580,P =0.000).Conclusions The content of SDF-1 in myocardial tissue have a certain relationship with GCS of left ventricular myocardium.

Objective:To observe therapeutic effect and safety of six‐month atrovastatin sequential treatment on pa‐tients with acute coronary syndrome (ACS) undergoing PCI .Methods :A total of 280 ACS patients were consecu‐tively enrolled ,randomly and equally divided into sequential treatment group (received atorvastatin 80mg 2d before PCI operation ,then 40mg/d after operation ,20mg/d a month later ) and routine treatment group (no taking atorv‐astatin before PCI operation ,then 20mg/d after operation and as a maintenance dose ) .Both groups were observed for six months ,therapeutic effect and safety were compared between two groups .Results:Compared with before PCI ,there were significant rise in levels of creatine kinase isoenzyme (CK‐MB) and cardiac troponin I (cTnI) after PCI 18h~24h in two groups ,and those of sequential treatment group were significantly lower than those in routine treatment group [CK‐MB:(2.72 ± 0.52) μg/L vs .(6.04 ± 0.51) μg/L ,cTnI : (0.28 ± 0.13) μg/L vs .(0.42 ± 0.16) μg/L , P < 0.01 both ];Compared with routine treatment group , the high sensitive C reactive protein (hsCRP) level significantly reduced in sequential treatment group after PCI 2d ,and continued until post‐operation six months [ (2.34 ± 0.51) mg/L vs .(1.49 ± 0.78) mg/L ,P=0.001];the blood lipids levels (except level of high density lipoprotein cholesterol significantly rose ) in sequential treatment group were significant lower than those of routine treatment group , P<0.01 all;there were no significant difference in percentage of transaminase level high‐er than normal three times and incidence rates of major adverse cardiovascular events (MACE) between two groups , P>0.05 all .Conclusion:Preoperative 80mg atrovastatin combined postoperative 40mg atrovastatin treatment can significantly reduce inflammatory reaction ,improve blood lipids ;compared with routine dose ,it doesn't significant‐ly increase adverse drug reactions ,so it's safe and effective .