Objective To explore the expression and activation of transcription factor E2F1 in cultured human retinal pigment epithelium (RPE) cells. Methods Cultured human RPE cells were divided into two groups after synchronization: one was cultured in Dulbecco′s modified Eagle′s medium (DMEM) without serum; the other was cultured in DMEM supplemented with 20% serum of newborn calf. The expressions of E2F1 protein in two groups were detected by Western blot analysis. The E2F1 DNA binding activities were measured by gel mobility shift assay(EMSA). Results E2F1 protein of 60 000 molecular weight was detected in the nuclear extract of human RPE cells, and serum stimulation could increase its expression( P

Objective To investigate the inhibitive effect of E2F decoy oligodeoxynucleotides (E2F decoy ODNs) on cultured human retinal pigment epithelial (HRPE) cells. Methods E2F decoy ODNs or scramble decoy ODNs at varied concentrations were put into the HRPE cells mediated by lipofectamine TM2000. The proliferative activity of HRPE was detected by methythiazolyl-terazollium assay, and the competitive combinative activity of E2F decoy ODNs and transcription factor E2F was detected by electrophoresis mobility-shift assay. Results The proliferation of HRPE was inhibited markedly by E2F decoy ODNs at the concentration of 0.2 ?mol/L (P=0.002) in a dose-dependent manner but not by scrambled decoy. The results of electrophoresis mobility-shift assay showed that the combinative activity of transcription factor E2F was abolished completely by E2F decoy ODNs. Conclusions E2F decoy ODNs may sequence-specifically inhibit the combinative activity of transcription factor E2F,and inhibit the proliferation of HRPE cells.

Objective To evaluate the function of the domestic sickbeds set up by our hospital in the prevention and cure of non infectious chronic diseases. Methods A perspective study was made through offering health education, guidance and home treatment to 116 cases using domestic sickbeds and employing the method of self management. In addition, the clinical treatment results of the patients and the rate of their satisfaction towards domestic sickbeds were surveyed, analyzed and assessed. Results Through long term follow up visits, it was found that compared with the intermittently standardized group and the completely non standardized group, the control rate of chronic diseases in the standardized group with systematic management and treatment was significantly higher while the rates of complications and mortality were much lower (P

Objective To analyze the potential factors affecting the prognosis of patients with sepsis and evaluate their values in predicting the disease outcome. Methods A clinical prospective study was conducted. Fifty-three septic patients admitted to intensive care unit (ICU) of the First Affiliated Hospital of Guangzhou Medical University from October 17th, 2012 to August 8th, 2013 were enrolled, and in the same term 35 volunteers having passedphysical check-up were assigned in the healthy control group. According to the severity of the patients, they were divided into sepsis, severe sepsis and septic shock groups. Furthermore, based on the difference in scores of acute physiology and chronic health evaluation Ⅱ (APACHE Ⅱ), the patients were divided into low-risk (APACHE Ⅱ scores < 10), middle-risk (APACHE Ⅱ scores 10 - 19) and high-risk groups (APACHE Ⅱ scores≥ 20 ). According to whether the coagulation dysfunction occurred or not and whether the dysfunction was adjusted or not at the end of observation, the septic patients were divided into non-coagulation defect group, and adjusted and non-adjusted coagulation defect groups. After entrance of groups, the clinical data, including gender, age, body temperature, blood pressure, prothrombin time (PT), prothrombin time activity (PTA), activated partial thromboplastin time (APTT), international normalized ratio (INR), levels of D-dimer, fibrinogen (Fib), blood lactate, and serum procalcitonin (PCT) were recorded, and APACHEⅡscore was calculated. In 24 hours after admission, blood samples were collected, and the levels of interleukins (IL-6, IL-8) were tested by Bio-Plex 200 System. The prognostic factors related to sepsis were screened by binary multivariate logistic regression analysis. The receiver operating characteristic curve (ROC) were used to evaluate the prognostic values of blood lactate, PCT, IL-6, IL-8 and APACHE Ⅱ scores for patients with sepsis. Results Fifty-three patients were enrolled, including 17 patients in sepsis group in which blood coagulation dysfunction occurred in 8 cases, of them 7 being adjusted, and 5 died; 15 patients in severe sepsis group, in which blood coagulation dysfunction occurred in 7 cases, of them 2 being adjusted, and 7 died;21 patients in septic shock group in which blood coagulation dysfunction occurred in 18 cases, of them 4 being adjusted, and 18 died. Both IL-6 and IL-8 levels of sepsis group were significantly higher than those in healthy control group (both P<0.01). Univariate logistic regression analysis showed that the grade of sepsis severity, APACHEⅡscore, IL-6, IL-8, blood lactate, PCT and coagulation dysfunction were related to the prognosis of septic patients. Multivariate logistic regression analysis confirmed that blood lactate concentration [β=0.891,χ2 = 5.872, P = 0.015, odds ratio (OR) = 2.438, 95% confidence intervals (95%CI) was 1.186 - 5.013] and coagulation function status (non-adjusted coagulation defect group:β=3.563,χ2=9.980, P=0.002, OR=35.286, 95%CI was 3.868-3.563) were independent prognostic factors of septic patients. The ROC curve analysis showed:for the level of blood lactate, the area value under ROC curve (AUC) was 0.767, the best cutoff value was 2.15 mmol/L with the Youden index of 0.386;for PCT, the AUC was 0.698, the best cutoff value was 9.39μg/L with the Youden index of 0.406;for IL-8, AUC was 0.686, the best cutoff value was 20.06 ng/L with the Youden index of 0.312;and for IL-6, AUC was 0.681, the best cutoff value was 45.44 ng/L with the Youden index of 0.406. Multivariate logistic regression analysis confirmed that the plasma levels of IL-6 and IL-8 were the independent risk factors of septic patients' coagulation function. The IL-6 concentration of non-coagulation defect group was significantly lower than that in adjusted coagulation defect group (ng/L:29.26 vs. 67.98, P<0.05) and non-adjusted coagulation defect group (ng/L:29.26 vs. 128.00 P<0.05). There was no significant difference in IL-6 level between the adjusted and non-adjusted coagulation defect groups (P>0.05). The IL-8 level of non-coagulation defect group was significantly lower than that of adjusted (ng/L:24.67 vs. 27.23, P<0.05) and non-adjusted coagulation defect groups (ng/L:24.67 vs. 60.14, P<0.05). There was no statistically significant difference in IL-8 concentration between adjusted and non-adjusted coagulation defect groups (P>0.05). Conclusions The grade of sepsis severity, APACHEⅡscore, whether existence of coagulation dysfunction being present or not and whether its presence being adjusted or not during the septic patients' stay in ICU, the levels of blood lactate, PCT, IL-6 and IL-8 on the first day in ICU are significantly correlated to the prognosis of septic patients. Whether the existence of coagulation dysfunction being present or not, whether coagulation dysfunction being adjusted or not and the blood lactate level are the independent prognostic factors of septic patients, and the plasma concentrations of IL-6 and IL-8 are the independent affecting factors of whether coagulation dysfunction occurring or not, therefore they have predicting value concerning the occurrence of coagulation dysfunction in septic patients.

Objective To evaluate the influence of ankle pump motor on deep vein thrombosis after surgical operation.Methods 138 cases of patients after surgical operation who were assessed as high risk patients,were randomized into the study group (70 cases)and the control group (68 cases),routine nursing was adopted in the control group,while in the study group,ankle pump motor was adopted in addition.The incidence of deep vein thrombosis was compared between two groups.Results No deep vein thrombosis was found in the study group,while 1 case of thrombosis was detected in the control group,but there was no statistic difference.Conclusions Ankle pump motor was easy and convenient,and can prevent deep vein thrombosis by promoting the reflux of the lower limbs,improving the recovery of patients after operation,and increasing nursing quality as well.

Objective The aim of this study was to determine the research ability,explore the reasons and point out the direction to improve the research ability of nurses in our hospital.Methods 375 cases of nurses in clinical work in our hospital were chosen with random sampling method to investigate the research ability.Results The variability of research ability score of nurses under investigation was comparatively large.The minimum of scores was 10,the maximum was 113 and the average score was 55.34±25.01.Various scores were all relatively low.The general trend is that the higher the academic and professional titles,the better the research ability.The various scores were independent of administrative rank.Conclusion General research ability of nurses in our hospital was relatively weak.It is necessary to train nurses in our hospital,especially those with lower academic and professional titles to improve the general research ability.

Intraoperative cell salvage (IOCS) has been widely used to reduce allogeneic blood transfusion and prevent blood transfusion related complications during surgery.However, due to the risk of transfusion related reaction, contamination, and immunological reaction, its use for tumor patients has been controversial and limited.To explore the feasibility of the application of IOCS in cancer patients, we reported 2 cases of renal cell carcinoma (RCC) with tumor embolism in IVC that underwent radical nephrectomy,and inferior caval venous thrombectomy receiving IOCS combined with leukocyte depletion filter (LDF) from August 2016 to November 2016 in our hospital.The cell saver blood salvage (Haemone-tics, 5+) was used for these 2 cases.The salvaged blood was filtered through the LDF before infusion.For case 1 (male 45-year-old) the total operation time was 505 min, and the estimated blood loss was 4 500 ml.A total of 1 000 mL autologous blood, 12 u allogeneic packed red blood cells (PRBC), 1 200 mL fresh frozen plasma (FFP) were infused during the procedure.The patient was discharged from hospital after 75 days without complications.The postoperative follow-up for 3 months showed no tumor recurrence or metastasis.For case 2 (a male patient, aged 51 years), the total operation time was 490 min, and the estimated (blood loss was 7 000 mL.the patient received 2 700 mL autologous blood transfusion, 12 u allogeneic packed red blood cells (PRBC), and 2 400 mL fresh frozen plasma (FFP).The patient was discharged from hospital after 86 days without severe complications.the postoperative follow-up for 6 months showed no tumor recurrence or metastasis for this patient.Other relevant retrospective studies with this technique showed that cell salvage could be used safely in many kinds of cancer patients, for example, bladder cancer, liver cancer and kidney cancer.Furthermore,numerous researches have proved the safety and efficacy of the combination of these two techniques, the intraoperative cell salvage technique and leucocyte depletion filter in cancer patients.Here we only reported two cases using IOCS and LDF.Further work is needed to determine whether the use of intraoperative cell salvage combined with leukocyte depletion filter can be used safely for patients with HCC.

Objective To observe the risk factors for portal vein thrombosis (PVT) in cirrhotic patients prior to receiving endoscopic treatment to prevent gastroesophageal varices rebleeding.Methods A retrospective analysis was conducted on cirrhotic patients admitted to Zhongshan Hospital,Fudan University from 2008 to 2013 for secondary prevention of gastroesophageal varices bleeding via endoscopic treatment.Relevant information and data were collected,followed by an univariate analysis and multiple Logistic regression analysis in attempt to identify potential factors affecting the formation of PVT.Results Totally 591 patients were enrolled in the present study and were classified as present-PVT group (n =122,20.64 ％) and absent-PVT group (n =469,79.36 ％).Univariate analysis showed that MELD score,hemoglobin,platelet count,total bilirubin,alanine aminotransferase,blood urea nitrogen,splenectomy ratio all achieved statistical significance between the two groups (P＜0.05).The multiple Logistic regression showed that MELD score,lowered blood urea nitrogen,elevated D-dimer and history of splenectomy were independent factors associated with the formation of PVT (P values were separately 0.016,0.026,0.014 and ＜0.001).Conclusions Cirrhotic patients should receive regular surveillance for MELD score,liver function,D-dimer and portal vein ultrasonography,especially in patients received with a previous history of splenectomy.

AIM: To study the effects of insulin and glucose on tissue-type plamingen activator (tPA) and its inhibitor-1 (PAI-1) secretion in cultured human endothelial cells. METHODS: Human endothelial cell line ECV-304 was cultured with glucose and/or insulin at different concentrations with or without hypoxic exposure. RESULTS: The tPA, PAI-1 secretion and ratio of tPA/PAI-1 increased in endothelial cells during hypoxia. Insulin and glucose increased the tPA and PAI-1 secretion in endothelial cells exposed to hypoxia, and increase in tPA/PAI-1 ratio was also observed at 4 h and 8 h. CONCLUSION: Hypoxia stimulates the release of tPA and PAI-1. Insulin and glucose also stimulate the tPA and PAI-1 secretion during hypoxia.

Objective To study the intestinal microflora changes in children with Henoch-Sch?nlein purpura (HSP). Methods The feces of 64 children with HSP (the experimental group) and 25 healthy children (the control group) were collected. 16S rRNA/DNA fluorescent quantitative polymerase chain reaction were performed to detect bacterial content of Lactobacillus, Biifdobacterium and Escherichia coli in feces. Results The amounts of Lactobacillus, and Biifdobacterium in the HSP group were lower than those of the healthy group, and the amounts of E.coli were higher, but the differences were not statistically signiifcant. The amounts of Lactobacillus and Biifdobacterium in the HSP children with gastrointestinal symptoms (abdominal pain, vomiting, e.g.) were signiifcantly lower than those in HSP children without gastrointestinal symptoms and in the healthy group. The difference was signiifcant (P<0.05). Conclusions It suggests that intestinal microlfora in children with HSP in acute phase may exist disorders, especially in the HSP children with gastrointestinal symptoms.