Objective To prepare RGD conjugated paclitaxel and curcumin loaded liposome and evaluate their properties and effect on the treatment of ovarian carcinoma in vitro and in vivo . Method The liposomes were prepared by thin film hydration method. The particle size,Zeta potential and entrapment efficiency were evaluated. The efficiency of cellular uptake on A 2780 cells in vitrowas evaluated. Flowcytometry were used to observe the apoptosis morphous.A 2780 cells werexenografted in athymic mice to establish the animal model, which were used to evaluate the effect of anti-cancer. Results The particle diameter of the RGDLP-PTX/Cu was (94.8±11.2) nm with the Zeta potential of (-3±2.45) mV. The entrapment efficiency of PTX and Gen were 81.8%and 84.6%respectively. The result demonstrated that RGDLP uptaken by A 2780 were 3.6 times higher than that of LP. The apoptosis assay、the inhibition of the inhibition of tumor in vivoconfirmed strong inhibitory effect ofRGDLP-PTX/Cu. Conclusion RGDLP-PTX/Cu were easy to prepare and it is a potential delivery system for the treatment of ovarian carcinoma.

Objective To investigate the effects of propefol on β-amyloid protein(β-AP)-induced injury to cultured rat cortical neurons.Methods Eighteen days pregnant SD rats were anesthetized with ether.The fetal rats were obtained under sterile condition and decapitated. Cortices were then dissected under dissecting microscope.Cortical neurons were isolated according to the method described by Velly LJ et al and cultured for 7 days.There were 5×104 neurons in each well (200 μl).The experiment included 2 parts.In part T 15 wells of neurons were randomly divided into 5 groups(n=3 each ) : group I control(C);group II β-AP 25 μmol/L; group III and IV 2 propofol pretreatment groups (PP1,PP2) and greup V propofol treatment (PT).In group PPt propofol 50 μmol/L was added to the culture medium 24 h before the addition of β-AP 25 μmol/L and the neurons were incubated for another 24 h.In group PP2 propofol 50 μmol/L and μ-AP 25 μmol/L were added to the culture medium simultaneously and the neurons were then incubated for 24 h.In group PT propefol 50 μmol/L was added to the culture medium at 6 h after the addition of β-AP 25 μmol/L and the neurons were incubated for another 18 h.In part Ⅱ 18 wells of neurons were randomly divided into 6 groups(n=3 each):group I control (C) ; group IIβ-AP 25 μmol/L; group III intralipid; group IV,V,and VI 3 prepofol treatment groups (P1,P10,P50).In intralipid group equal volume of 10% intralipid was added to the culture medium at 6 h after β-AP 25 μmol/L and the neurons were then incubated for another 18 h.In group IV- VI propofol 1,10 and 50 μmol/L were added at 6 h alter β-AP 25 μmol/L respectively and the neurons were incubated for another 18 h.The amount of lactic dehydrogenase (LDH) released was measured.Neuronal viability was assessed by MTT assay.The neuronal apoptosis was detected using Hoechst33342 staining and TUNEL technique,and the.apoptosis rate was calculated.Results In part Ⅰ there was no significant difference in the amount of LDH released between group Ⅱ(β-AP) and the 2 propofol pretreatment groups(Ⅲ,Ⅳ).The amount of LDH released was significantly lower in group Ⅴ (propofol treatment) than in group β-AP(Ⅱ).In part Ⅱ the amount of LDH released was significantly lower,neuronal viability higher and the apoptosis rate was lower in group P50 than in group Ⅱ(β-AP).Conclusion Propofol 50 μmol/L given after β-AP can attenuate β-AP induced injury to cultured rat cortical neurons while prophylactic administration of propofol can't.

Objective To study the effect of human Slitrk1 gene on proliferation and differentiation of PC12 cells. Methods The CDS sequence of Slitrk1 was amplified by PCR, and then cloned into pcDNA4 vector. The recombinant plasmid pcDNA4/Slitrk1 were transfected into rat PC12 cells by lipofectamine. The stable expression cell clones were screened by RT-PCR. MTT method was used to detect the proliferation rate of PC12 cells. The morphologic changes in PC12 cells were observed microscopically. Results The stable cell lines expressing pcDNA4 (pcDNA4/PC12) and pcDNA4/Slitrk1 (ST1/PC12) were established. Compared to pcDNA4/PC12 cells, the growth rate of ST1/PC12 cells was decreased. In addition, pcDNA4/PC12 cells tend to grow as well as the normal PC12 cells. However, most of the ST1/PC12 cells adhered to the plate with one or two neurites. Conclusion Over-expression of human Slitrk1 gene inhibited the proliferation of PC12 cells and promoted the outgrowth of neurites. It is suggested that human Slitrk1 gene may be involved in differentiation of PC12 cells.

Objective To observe the application of modified perfusion device pre-flushing method in double plasma molecular adsorption system (DPMAS) treatment and nursing care effect on patients with liver failure. Methods A retrospective analysis was conducted; 56 patients with liver failure who were consistent with the enrolled standard and admitted to the Surgical Intensive Care Unit (SICU) of Beijing Chaoyang Hospital fromJune 2014 to December 2016 were the objects of the study and their clinical data were collected. Ten patients involving the results of 17 case times from June 2014 to April 2015 were selected as the control group by using the traditional method of pre-flushing, and 46 patients involving the results of 68 case times from May 2015 to December 2016 were chosen as the observation group by using the modified perfusion device pre-flushing method. Both groups adopted effective nursing care cooperation: such as closely observe the changes of symptoms and signs of patients during the peri-treatment period, strengthen psychological care, maintain pipeline properly, and carry out the preventive management of anticoagulation and potential complications. The changes of symptoms and signs in the patients of two groups were observed, the DPMAS pre-flushing time and single time effective treatment time of the two groups were compared, before and 3 days after DPMAS treatment, the changes of serum total bilirubin (TBil), total bile acid (TBA) and its clearance rate, the changes of electrolytes, liver and kidney functions, blood routine and blood coagulation function were observed and compared between the two groups to evaluate and analyze the therapeutic effect of DPMAS.Results In the two groups, there were 56 patients involving 85 case times of DPMAS treatment all successfully completed, and the patients' symptoms and signs were improved significantly. The pre-flushing time of the observation group was obviously shorter than that in the control group (minutes: 29.5±13.1 vs. 38.9±14.7), and the single effective treatment time was obviously longer than that in the control group (minutes: 6.7±1.1 vs. 3.4±0.9,P < 0.05). After treatment, the TBil, TBA, alanine aminotransferase (ALT), aspartate aminotransferase (AST) and albumin (ALB) in two groups were decreased significantly compared with those before treatment, the prothrombin time (PT) was markedly prolonged compared with that before treatment (allP < 0.05), and the degrees of improvement in the observation group were more obvious than those of the control group (butP > 0.05), and urea nitrogen (BUN), creatinine (Cr), hemoglobin (Hb), platelet count (PLT), Na+ and K+ had no significant changes compared with those before treatment (allP > 0.05). The TBil clearance rate [(42.5±15.5)% vs. (32.9±13)%] and TBA clearance rate [(27±8.9)% vs. (17.1±5.8)%] in the observation group were significantly higher than those in the control group (allP < 0.05). There were no adverse events such as electrolyte disturbance, errhysis or bleeding found in the two groups during the treatment. In the study, there were 8 case times with self feeling of skin itching, 8 case times of skin rash, 6 case times of nausea and vomiting, 6 case times of chest tightness, 5 case times of blood pressure dropping phenomena and 4 case times of fever symptoms, and after the symptomatic treatments and nursing intervention, all the above symptoms were relieved or disappeared.Conclusion The modified perfusion device pre-flushing method can effectively elevate the pre-flushing effect and therapeutic effect, it is simple, time-saving, can reduce the economic burden of the patients, thus it is worthy to be used widely in clinic, during the therapeutic process, reasonable and effective nursing measures are practiced, that is the key to guarantee the successful treatment of patients.

Objective To investigate the level of illness uncertainty among family members of patients in surgical intensive care unit (ICU) and analyze its potential influencing factors based on Mishel′s theory. Methods A sample of 260 family members were recruited from the surgical ICU during the period from September 2014 to June 2015. Illness uncertainty was assessed by the Mishel Uncertainty of Illness Scale-Family Member. General variables questionnaire, Social Support Rating Scale, Simplified Coping Style Questionnaire were also examined to explore the influencing factors. Results The score of illness uncertainty was ( 96.75 ± 13.90 ) points in family member of patients in surgical ICU, at a high level. Multiply liner regression showed that social support (P=0.011), positive coping style (P=0.027) and average family income (P=0.033) were significant influencing factors of illness uncertainty. Conclusions The level of illness uncertainty is high among family members of patients in surgical ICU. There is a need for nurses to provide accessible social support and psychological intervention, help them cope with illness uncertainty positively.

OBJECTIVE:To study the stability of timolol maleate eye drops and predict its storage period at room temperature METHODS:Timolol maleate was determined by UV-spectrophotometry,initial average rate method was used in predicting the expiry term RESULTS:Stability of the 0 5% timolol maleate eye drops was not so good,expiry term predicted at 25℃ was only 70 days,while at 5℃ was as long as 1 2 years CONCLUSIONS:Initial average rate method is rapid,convenient and precise,so it is suitable for stability study of hospital preparations

Objective To investigate the therapeutic effects of thrombolysis infusion via microcatheter on the treatment of central retinal artery occlusion(CRAO). Methods Urokinase (UK) was directly infused via ophthalmic artery (OA) by microcatheter (6 patients) or via intravenous (7 patients) to dissolve the thrombus. The patency of the artery was evaluated by fundus fluorescein angiography (FFA), and the effect of fibrinolytic activity on the systemic changes was observed by blood biochemical examination simultaneously. Results In 6 patients in the microcatheter group, 5 had completely and 1 had partly reopened OA on the morrow of UK infusion with the patency rate of 83.33%, while in 7 patients in vein group, 3 completely reopened, 2 partly reopened and 2 obstructed OA were found with the patency rate of 42.86%. The difference between the two groups was significant. No obvious change of index of blood coagulation system was found in catheter group, which had great disparity compared with the vein group. Conclusion Urokinase infusion via microcatheter in CRAO has better therapeutic impact and smaller effect on systemic action.

Background and purpose: L-asparaginase (L-Asp) is an important drug in the treatment of childhood lymphoid neoplasms at present, but a lot of adverse reactions of L-Asp were observed. Pegasparaginase (PEG-Asp) is available in China in recent years. This study aimed to explore efifcacy and side-effect of PEG-Asp as ifrst-line treatment in childhood acute lymphoblastic leukemia (ALL) and lymphoblastic lymphoma (LBL). Methods:A total number of 211 ALL or LBL patients were treated with CCLG 2008 or BFM-90 protocol with PEG-Asp or L-Asp between Apr. 2008 and Mar. 2013;42 patients, among whom, were 35 ALL patients and 7 LBL patients, were treated with PEG-Asp as ifrst-line treatment;169 patients were treated with L-Asp as ifrst-line treatment (including 53 patients treated with L-Asp during induction protocol; with PEG-Asp during consolidate protocol). The clinical outcome and adverse reaction of PEG-Asp with L-Asp were observe and compared. Results: There were 35 ALL patients in PEG-Asp ifrst-line treatment group and the complete remission rate after 1 course of PEG-Asp was 97.1%,however, which was 83.3%of high risk ALL patients. The complete remission rate of 7 LBL patients of PEG-Asp ifrst-line treatment group was 57.1%. There was no signiifcant difference between 2 groups (P>0.05). Thirty-four patients relapsed including 5 patients of PEG-Asp ifrst-line treatment group, 16 patients of L-Asp ifrst-line treatment group and 13 patients treated with L-Asp during induction protocol and with PEG-Asp during consolidate protocol. Thirty-one patients died including 3, 18, 10 patients in 3 groups respectively. Twenty-two patients died of relapse, 4 died without remission, 5 died of complications. There was also no signiifcant difference between 2 groups (P>0.05). The incidence rates of adverse reactions were 47.6% and 63.3% respectively. Anaphylaxis, liver functions abnormalities, blood coagulation abnormalities, gastrointestinal reaction, hyperglycemia and pancreatitis were common in our patients. The incidence rate of anaphylaxis in PEG-Asp as ifrst-line treatment group was lower than other groups (P=0.03). But there was no signiifcant difference been observed in the incidence of other adverse reaction. Conclusion: The short-term efifcacy of PEG-Asp as the ifrst-line treatment in childhood leukemia and lymphoma was satisfactory and the incidence rate of anaphylaxis was lower. However, we will still pay much attention to adverse reaction monitoring of PEG-Asp.

Objective To constructan eukaryotic expression recombinant plasmid named pEGFP-N2-PRNP .Methods Total RNA was extracted from alzheimer (AD) disease peripheral blood ,and the PRNP gene was amplified by reverse transcription-poly-merase chain reaction(RT-PCR) .By using gene recombination technique ,human PRNP cDNA was inserted into retroviral vector pEGFP-N2 .The recombinant plasmid was identified by a pair of specified primers containing the restriction sites of Xho Ⅰ and EcoRⅠ .Results The PRNP gene could be obtained by RT-PCR ,the recombinant plasmid was identified by restriction endonucle-ase analysis ,PCR and sequence analysis ,and the expression vector pEGFP-N2-PRNP ,which could be stably expressed in SH-SY5Y cells .Conclusion The recombinant plasmid pEGFP-N2-PRNP is constructed successfully ,Which offers a basic for the further re-search on PRNP biological fuction .

Objective To explore the value of non-spiral mode of low-dose chest scan in diagnosis of pulmonary nodules.Methods Thirty patients with chest X-ray suspected pulmonary nodules underwent spiral low-dose and non-spiral low-dose CT scan under Toshiba 4 row multi-slice spiral CT (Asteion 4).The parameters were defaulted as 35.5 mAs,20 mm/ round (pitch=l),0.75 s/rot in spiral scan,while in non-spiral scan wree defaulted as 24 mAs,20 mm/round (thickness = layer distance),0.48 s/rot.Other parameters including 120 kV,collimator 0.5×4,DFOV 300 mm,reconstruction slice thickness 5 mm were chosen in both scans.CT imaging quality was evaluated according to the degreex of image artifacts and the distinguishment of nodule,and the pulmonary nodules were counted,then the differences of finding the pulmonary nodules and effective radiation dose of both mode were analyzed.Results The images were good in one patient in both scanning mode,and excellent in 29 patients in spiral scanning mode,28 patients in non-spiral scanning mode.A total of 108 nodules were found with two modes.The effective radiation dose in non-spiral scan was lower than that in spiral scan.No significant difference was found between non-spiral mode scanning and spiral scanning mode in the low-dose chest examination in the discovery and diagnosis of pulmonary nodules.Conclusion Lower dose of non-spiral scanning mode is feasible in diagnosis of pulmonary nodules.