BACKGROUND: The low survival rate of neuron cells is one of the main mechanisms of stem cell allograft, which might lead to the failure of allograft. Nuclear factor-KB (NF-kB) is one of main transcription factors for cell signaling transduction and participates in call proliferation and differentiation.OBJECTIVE: To study the differentiation of muscle-derived stem cells (MDSCs) into neuron-like cells induced by ciliary neurotrophic factor (CNTF) and Compound Salvia Miltiorrhiza Injection in vitro, and the expression of NF- kB.DESIGN, TIME AND SETTING: The experiment at cell molecular level was performed at the Oral Science Laboratory of the Second Affiliated Hospital of Liaoning Medical College from March to May 2008.MATERIALS: A total of 10 Sprague Dawley neonatal rats aged 7 days were supplied by Experimental Animal Center, Liaoning Medical University. CNTF (Sigma, USA) and Compound Salvia Miltiorrhiza Injection (Chiatai Qingchunbao Pharmacantical Co.,Ltd., China) were used in this study.METHODS: Rat MDSCs were harvested in vitro, pudfied by differential adherence and enzyme digestion, and incubated in 6-well plate. Samples in the induction group were incubated in DMEM containing CNTF for 24 hours. The medium was changed.Subsequently, samples were dnsed three times, and then incubated in serum-free DMEM supplemented with Compound Salvia Miltiorrhiza Injection for 5 hours. Samples in the control group were treated with serum-free DMEM.MAIN OUTCOME MEASURES: Neurofilament protein and NF-KB inhibitor protein expression were detected using reverse transcription-polymerase chain reaction (RT-PCR) and Westem blotting.RESULTS: No neurofilament protein expression was found in MDSCs before induction, and neurofilament protein-positive MDSCs were detected following induction. Results of gel electrophoresis and Westam blot showed that no significant differences in NF-kB inhibitor protein expression were determined in the control group, and NF-kB inhibitor protein expression was significantly decreased in the induction group after induction.CONCLUSION: CNTF and Compound Salvia Miltiorrhiza Injection could inhibit the activation of NF-kB and induce the differentiation of MDSCs into neuron-like cells.Zeng XY, Wang W, Sun L, Zhang L, Zeng LD.Differentiation of muscle-derived stem cells into neuron-like cells induced by ciliary neurotrophic factor and Compound Salvia Miltiorrhiza Injection in vitro.Zhongguo Zuzhi Gongcheng Yanjiu yu Linchuang Kangfu.2009;13(27): 5336-5340. [http://www.crter.cn http://en.zglckf.com]

?AlM: To explore the effects of the prescription of reinforcing kidney, nourishing blood, improving eyesight on the oxidative stress model of ARPE-19 cells induced by acrolein.
?METHODS:SD rats serum containing the prescription of reinforcing kidney, nourishing blood, improving eyesight and the content of distilled water in serum were prepared. The effects of the prescription and distilled water in serum at different concentration ( 2. 5%, 5%, 10%, 20% and 40%) on cell vitality was observed by cell counting kit ( CCK-8 ) assay. the logarithmic phase of ARPE-19 cells were pretreated by different concentrations (1. 25%, 2. 5%and 5%) of the prescription serum and distilled water in serum for 24h. Then it was treated with 75μmol/L acrolein for 24h. Cell vitality was observed by CCK-8 assay. The change of cell nucleus was detected by DAPl staining .
?RESULTS: 2. 5% and 5% serum had no effect on cell viability (P>0. 05), while 10%, 20%, 40% serum could inhibit cell viability (P<0. 05). CCK-8 results showed that 2. 5% and 5% the prescription of reinforcing kidney, nourishing blood, improving eyesight serum was better than distilled water in serum (P<0. 05).
?CONCLUSlON: The prescription of reinforcing kidney, nourishing blood, improving eyesight has the protective effect on ARPE-19 cell damage induced by acrolein.

Objective Through epidemiological analysis of prehospital trauma care in Guangzhou during 1996～2004,to explore common characteristics and trends of it.Methods The data of the prehospital trauma patient were collected by Guangzhou First Aid Service Command Center from 1996 to 2004 and was prospectively analyzed. Results The number of prehospital care had been increased year by year(increased by 3.56 times in the nine years).The number of the trauma patients had been increased by 7.98 times.Head injury was in the first place(6.86%). Most of casualties fell into the age of 21～40 years old.The male patients were the two times that of female patients.Conclusion Trauma has become an serious problem. The improvement of prehospital emergency network, ability of on-the-spot emergency care and popularizing the knowledge of emergency are key to reduce the casualties.

Objective:To explore the application value of clinical case-based learning in medical imaging teaching.Methods:A total of 145 clinical medical students from three classes in the third year were enrolled and they were divided into three classes. One class took case-based learning, one class took traditional teaching, and one class took both. The teaching content was the preclinical medical professional course—Medical Imaging. Continuous variables were expressed in accordance with normal distribution (mean standard deviation). Differences in mean and median values were evaluated by using t test and the Mann-Whitney U test, respectively. Categorical data were compared using the chi-square test. Results:There was a significant difference between the combined teaching class and the case-based learning class or the traditional teaching class in the final exam ( P=0.002). There was also a significant difference between the combined teaching class and the traditional teaching class in the film reading quiz ( P=0.035). More than 70% of students recognized the case-based learning. Conclusion:Case-based learning is helpful to improve students' flexible application of relevant knowledge and skills of analysis and communication.

AIM: To explore the effect of Bu Shen Yang Xue Ming Mu (BSYXMM) Formula on hydroquinone-induced oxidative stress injury in ARPE-19 cells.METHODS: The oxidative injury model of ARPE-19 cell was induced by exposure to various concentrations of hydroquinone (HQ) to determine the optimal concentration.Intestinal absorption solutions of BSYXMM Formula were prepared.Effect of intestinal absorption solutions of BSYXMM Formula on the cell viability was detected by CCK-8 assay,and the percentage of apoptotic cells was measured by TUNEL assay.The levels of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) in ARPE-19 cells were detected by means of chemical colorimetry.RESULTS: It was found that ARPE-19 cell viability significantly decreased when the concentration of HQ was higher than 90μmol/L.Compared with the model group,1% and 2% intestinal absorption solutions in the pre-treatment group could significantly alleviate HQ-induced injury (P<0.01) and 0.5% and 5% intestinal absorption solutions in the pre-treatment group could alleviate the injury in certain degree(P<0.05).While in the treatment group 1% and 2% intestinal absorption solutions could alleviate the injury to some extent (P<0.05).TUNEL results showed that the apoptosis rate decreased significantly in the pre-treatment group (P<0.01)and to some extent in the treatment group (P<0.05)compared with the model group.It was shown that both levels of SOD and GSH-Px in pre-treatment group and treatment group were markedly higher than that of model group(P<0.05),and pre-treatment group had more significant effect (P<0.01,P<0.05).CONCLUSION: BSYXMM Formula could protect against HQ-induced oxidative stress injury in ARPE-19 cells,which may be related with the increasing of antioxidant enzyme in the cells.

Objective To investigate the effects of solution-focused brief therapy on self-perceived burden and quality of life in patients with stroke.methods 60 patients with stroke recruited at the department of rehabilitation of a hospital in Chengde city from January to June 2016 were divided into control group (n=30) and experimental group (n=30).Both groups received conventional nursing care and rehabilitation treatment.In addition,the experimental group received psychological intervention of solution-focused brief therapy,2-3 times a week,30-45 minutes for each time.The self-perceived burden scale(SPBS),memorial university of Newfoundland scale of happiness(MUNSH) and short from 36 health survey questionaire(SF-36) were used to assess the patients before and after intervention.Result s(1)The differences of the scores of SPBS ((39.27±5.83) vs (22.40±4.03),t=16.248,P<0.01) and MUNSH ((4.20±4.50) vs (31.10±3.66),t=-24.136,P<0.01) for the experimental group before and after the intervention were statistically significant.There were statistically significant differences in scores of SPBS ((22.40±4.03) vs (35.30±2.63),t=-14.683,P<0.01) and MUNSH ((31.10±3.66) vs (19.67±3.64),t=12.127,P<0.01) between the experimental group and control group after the intervention.(2)The scores of physiologic functioning,general health,vitality,social functioning,role-emotional and mental health for the experiment group were higher than before(t=-23.427--6.624,all P<0.01).After the intervention,the scores of physiologic functioning,general health,vitality,social functioning,role-emotional and mental health in the experiment group were higher than those in control group(t=5.705-12.806,all P<0.01).Conclusion Solution-focused brief therapy can effectively reduce the self-perceived burden of stroke patients and improve their quality of life.

Antineoplastic Agents, Alkylating ; pharmacology ; Apoptosis ; drug effects ; Benzimidazoles ; pharmacology ; DNA Repair ; Dacarbazine ; analogs & derivatives ; pharmacology ; Drug Resistance, Neoplasm ; drug effects ; physiology ; Humans ; Membrane Proteins ; metabolism ; O(6)-Methylguanine-DNA Methyltransferase ; antagonists & inhibitors ; metabolism ; Poly(ADP-ribose) Polymerase Inhibitors ; Poly(ADP-ribose) Polymerases ; metabolism ; Proto-Oncogene Proteins ; metabolism ; Purines ; pharmacology ; Pyrimidines ; pharmacology ; Tumor Suppressor Protein p53 ; metabolism

The biobank for medical researchers is a resource of significant utility , which also causes a series of ethical issues. For example, the question of what kind of informed consent should be adopted for the biobanking tissue residue, whether related study can be conducted without the donors' consent and how to accomplish the biobank research. Based on ethical principles of donation, individual rights of donor and common interest of the society, this study suggested the informed consent that to which extent can be accepted for biobank and which type should be adopted in different scenes with two feasible choices. One is the irreversible, and the other is the reversible anonymization process for samples. The necessity and rationality of informed consent for biobank con-struction were also evaluated in order to provide references for the ethical practice of biobank research.

OBJECTIVE:To explore the protective effect of L-ornithine-L-aspartate on ischemia-reperfusion injury after partial hepatectomy. METHODS:104 patients underwent partial hepatectomy(vessel occlusion in portal fissure)were randomly divided in-to control group(53 cases)and trial group(51 cases). Control group was given routine liver-protective drugs,and trial group was additionally given L-ornithine-L-aspartate 10 g added into 5%Glucose injection 250 ml intravenously before surgery,for 7 consecu-tive days. The fasting peripheral venous blood was collected in 2 groups on first day before surgery and first,forth and sixth day af-ter surgery to detect liver function;the changes of main aminopherase index(ALT and AST)were compared between 2 groups at different portal fissure vessel occlusion time after surgery. RESULTS:There was no statistical significance in the difference of liver resection range,blood loss,first porta hepatis vessel occlusion time and anesthesia time in both groups during operation (P>0.05). Compared to before surgery,liver function indexes raised to different extent in 2 groups after surgery,with statistical signifi-cance(P<0.05). The levels of AST and ALT in trial group were significantly lower than in control group on first,forth and sixth day after surgery,while albumin level was significantly higher than control group,with statistical significance(P<0.05). Total bili-rubin levels of both groups were approximate basically,there was no statistical significance(P>0.05). Among those patients under-went porta hepatis vessel occlusion with Pringle method and with occlude occlusion time ≥15 min,the AST and ALT level of con-trol group was higher than those of trial group after surgery,but albumin level was below trial group,with statistical significance (P<0.05). CONCLUSIONS:L-ornithine-L-aspartate could improve liver function fast and effectively for partial hepatectomy pa-tients,especially for the patients underwent porta hepatic vessel occlusion with Pringle method for a long time(obvious ischemia-re-perfusion injury).