The cells sense direction is closely related with the proteins that contain PH (pleckstrin homology) domain. PH domain has been found in about 60 proteins, many of which could activate the sequent events of signal transduction via combining with the related binding sites on the surface of chematactic cel ls. The characteristics of this combining are: a.rapid and transient; b.It is only related to the concentration gradient of surroundings outside cells, whi ch is the base of spatial model; c.The distribution of the binding sites on th e cell membrane changes when the researchers altered the position of the chemoat tractant. This is the base of temporal model. To deeply investigate the effects of all kinds of proteins which contain PH domain on cells sense of direction will greatly promote the research of this field, and hence, has great theoretica l significance.

Objective To investigate the effect of histone deacetylases-1(HDAC-1)siRNA on the HDAC-1 protein expression,cell growth and apoptosis in HeLa cells.Methods The HDAC-1 protein was knocked down by HDAC-1 siRNA.HDAC-1 protein was detected by Western blot.The cell growth inhibition was assesses by MTT and clone forming assay.Apoptosis was measured by flow cytometry.Results Forty-eight h after transfection of HDAC-1 siRNA,HDAC-1 protein expression in HeLa cells was down-regulated obviously.The down-regulation of HDAC-1 significantly reduced the colony formation rate,inhibited cell proliferation and induced apoptosis in HeLa cells.Conclusion HDAC-1 siRNA may play an anti-proliferation role in HeLa cells by inducing apoptosis.

Objective To investigate the effect of interventional treatment in coronary heart disease (CHD) in elderly patients with brain natriuretic peptide and high-sensitivity C-reactive protein (hsCRP) levels.Methods 130 elderly patients undergoing coronary angiography interventional treatment were selected for the observation group,30 cases with normal coronary arteries angiography were chosen as the control group.In 46 cases of acute myocardial infarction(AMI) group,34 cases of unstable angina pectoris(UAP) group and 50 patients with stable angina pectoris (SAP) group and 30 cases coronary angiography normal control group(NOR),the hs-CRP and plasma brain natriuretic peptide(BNP) differences were determined and compared.Results CHD (AMI group,UAP group and SAP group) in patients with BNP levels were (548.6 ± 200.4) mg/L,(521.0 ± 198.7) mg/L and (175.8 ± 119.4) mg/L,which were significantly higher (59.3 ± 45.7) mg/L in the control group,hsCRP levels only in patients with acute myocardial infarction and unstable angina was significantly increased,the difference was statistically significant (t =13.74,10.65,all P ＜ 0.05).3d after PCI and three months prior CHD hsCRP increased to (45.8 ± 15.3)ng/L,and then decreased to (8.6 ± 4.4) ng/L,significantly different (t =10.76,14.54,all P ＜ 0.05) ; while BNP levels have been falling,first down (247.4 ± 70.1)mg/L,3 months after the falls (69.8 ± 20.0)mg/L,the difference was significant(t =11.47,19.64,all P＜0.05).Conclusion The levels of brain natriuretic peptide,hsCRP are reflections of coronary stenting in patients with coronary heart disease early postoperative inflammatory reaction and evaluate a sensitive indicator of disease,which may play an role in stent restenosis occurs.

Objective To survey and analyze the etiology of pericardial effusion in different age patients. Methods The data of 450 patients who were diagnosed as pericardial effusion were studied retrospectively. The pathogenesis of pericardial effusion were analyzed and compared among the five age groups : juvenile group (0-19 years),young group (20-39 years),middle age group (40-59 years), aged group (60-79 years) and existed advanced age group (≥80 years). Results The different pathogenesis of pericardial effusion existed in different age groups. The first three causes are tumor, tuberculous, heart failure in all patients. As a pathogeny, cardiopulmonary insufficiency induced pericardial effusions constitute the majority (about 50%) in the advanced age group. Tumor, heart failure are the main causes in aged group. In middle age group, tumor and tuberculous are the most frequent pathogenesis, while the tuberculous is the principal causes in juvenile and young groups. Conclusions The rate of tumor, heart failure, lung infection raised along with the age increasing in the patients with pericardial effusion, meanwhile the cases of tuberculoses declined. Attention should be given to this tendency on the diagnosis and treatment of the patients with pericardial effusions.

Objective To analyze the reasons of cesarean section in primiparae without operation indications ,in order to provide foundation for reducing the rate of cesarean section .Methods 640 cases of primipara were randomly divided into cesarean section with no operation indications(observation group) and spontaneous labor group(control group) ,320 cases in each each .The general data was investigated and analyzed ,the scale of cesarean section causes ,scale of cesarean section and pregnancy knowledge were compared between the two groups .Results The average age of the observation group was significant higher than that of the control group ,the percentage of monthly income of over 2 000 yuan and the proportion of level of education for college or above was signifi-cant higher than that of the observation group(P<0 .05) .In terms of pain tolerance ,no confidence in the natural delivery ,timing production ,family members will ,elderly parturient women ,the observation group were significant higher than the control group (P<0 .05) .The pregnancy knowledge level of observation group was significant lower than the control group (P<0 .05) .Multi-fac-tor analysis showed that ,high education level ,no tolerence of pain ,no confidence in the natural delivery ,timing production ,elderly parturient women ,and low degree of knowledge during pregnancy were major cause of of cesarean section rate .Conclusion The ap-propriate analgesia and encourage should be adopted for pregnant women who can′t stand the pain ,without confidence in the natural delivery .Education should be strengthen for pregnant women who timing production ,elderly parturient women ,low degree of knowledge .

Objective To investigate the clinical value of tumor necrosis factor-alpha ( TNF-) and hypersen-sitivity-C reactive protein ( hs-CRP ) in elderly patients with chronic heart failure ( CHF ) .Methods 85 elderly patients with CHF were randomly selected as the CHF group ,and 85 healthy pepole were chosen as the healthy control group .All subjects were taken fasting blood in the morning ,the TNF-αand hs-CRP levels were detected and compared between the two groups .The differences of plasma TNF-αand hs-CRP levels in different grades of CHF patients were also observed .Results The TNF-αand hs-CRP levels of the CHF group were significantly higher than those of the healthy control group(t=110.86,25.63,all P<0.05).With the elevation of heart function classification ,the TNF-αand hs-CRP levels gradually increased ,and compared with the previous grade ,the differences were statistically signifi-cant(F=7.65,16.75,all P<0.05).The results of linear correlation analysis showed that the levels of TNF-αand hs-CRP were negatively correlated with the LVEF (r1 =0.78,P<0.05;r2=0.71,P<0.05).The TNF-αand hs-CRP were positively correlated (r =0.83,P <0.05).Conclusion The plasma TNF-αand hs-CRP levels of elderly patients with CHF are increased ,and their levels are closely related with the heart function .

Objective To observe the sub-clinical inflammation and insulin resistance (IR) in patients with cerebral infarction(CI). Methods The levels of serum C-reactive protein (CRP),interleukin-6 (IL-6),fasting insulin (Fins),fasting plasma glucose (FPG),blood lipids and blood pressure were measured in 114 patients with CI (CI group). The insulin sensitivity index (ISI) was observed and the correlation between ISI and indexes of inflammation were analysed. The results were compared with 70 patients without CI(control group). Results (1) The levels of serum CRP [(2.73?0.87) mg/L]and IL-6[(0.14?0.03) ng/ml] in CI group were significantly higher and ISI(-4.31?0.53) was significantly lower compared with control group[CRP(1.63?0.93) mg/L,IL-6(0.12?0.03) ng/ml,ISI(-3.92?0.43)] ( all P8.2 mg/L was significantly lower than that in the patients with the CRP≤8.2 mg/L (-4.18?0.54)(P

AIM To study the effect of genistein (GST), a protein tyrosine kinases inhibitor, on L-type calcium channel currents (Iba,L or Ica,L, dependent on permeating ion used) in freshly dispersed colon smooth muscle cells from guinea-pig. METHODS Single colon smooth muscle cells were enzymatically dissociated from guinea-pig. L-type calcium currents were measured by conventional whole-cell patch-clamp techniques. RESULTS The peak amplitudes of Iba,L elicited to 10 mV test potential from a holding potential of -80 mV, were reversibly and dose-dependently reduced by GST (10-100 μmol·L-1) with an IC50 value of (39.9±3.6)μmol·L-1. Bath application of GST shifted the steady-state inactivation curves of Iba,L in a hyperpolarized direction (about 10 mV, P＜0.01) without altering their slopes. The peak amplitudes of Iba,L were also inhibited but to a less extent by daidzein, an inactive analogue of GST. Sodium orthovanadate 1 mmol·L-1, a potent inhibitor of protein tyrosine phosphatases, blocked GST-induced inhibition of Ica,L. CONCLUSION GST can block L-type calcium channel activity in guinea-pig colon smooth muscle cells via tyrosine kinase pathway.

Objective to observe the correlation between the expression and prognosis of osteosarcoma Insulin-like growth factor receptor(IGF1R),explore the factors affecting the prognosis of patients with osteosarcoma.Methods between January 2005 and April 2014 menstrual standardized comprehensive treatment of 60 cases of patients with stage ⅡB osteosarcoma were retrospectively analyzed.Using immunohistochemical method,the detection of osteosarcoma tissue and IGF1R expression rate in normal tissue adjacent to tumors and to analyze its correlation with survival of patients with osteosarcoma and factors affecting the prognosis.Results IGF1R in the positive expression rate of osteosarcoma tissues was 80.0％ (48/60),expression in normal tissue adjacent to tumor rate was 4/8,has a statistically significant difference between (P =0.032).IGF1R positive expression in osteosarcoma tissues group median disease-free survival time and the median overall survival time were significantly lower than the negative expression group (P =0.023,P =0.040) respectively.IGF1R expression level and pathological necrosis rate of preoperative chemotherapy,the time of first visit to the lung metastasis,and the survival prognosis of patients have significant correlation (P ＜ 0.05),and age,tumor location,tumor size,the serum LDH and ALP levels,is urgent to make a diagnosis and give treatment time,factors such as operation,preoperative chemotherapy times no significant correlation (P ＞ 0.05).Condusion IGF1R positive expression rate in stage Ⅱ B osteosarcoma tissue significantly negatively correlated with the prognosis of patients with osteosarcoma,is the independent prognostic factors of patients with osteosarcoma.

From international students' origin, composition, cultural background, with experience of teaching Australian students for 10 years, we put forward a set of teaching measures for the overseas students in ophthalmic optics, specifically overall planning, preparing good complete and detailed teaching plans be-fore teaching, adopting typical case teaching and question guiding teaching, making full use of multimedia media teaching and at the same time, using both constraints and guidance in the education management of international students.