Objective To establish immortalized bone marrow mesenchymal stem cells (BMSCs) from SD rats in vitro for further research on the characteristics and clinical application of BMSCs.Methods By using L ipo-fectamine TM 2000 -mediated gene transfection, plasmid pCMVSV40T/PUR containing the simian virus 40 large T antigene gene (SV40Tag) was transfected into BMSCs.BMSCs were screened by puromycin and then cultured on an extended scale.Their cell morphology and growth conditions were observed.Growth curve of cells was graphed.The expression of SV40Tag in transfected cells was identified by enzyme digestion method for the detection of tumor forma-tion.Results The growth rate of the experimental group of BMSCs after the 7th generation was significantly higher than that of the control group.No tumorigenicity was found in BMSCs after the 7th generation.Conclusion In vitro, the immortalized BMSCs by pCMVSV40T/PUR can provide basis on a large scale for its application in clinic and sci-entific research.

Vasovagal syncope (VVS)is the most common clinical unexplained syncope,and its pathogenesis has not been fully understood yet.The contradictory reflection of cardiac autonomic nervous system caused by riggerring Bezold-Jarisch reflex,which could cause dilated blood vessels,blood pressure and cardiac output decreased,insufficient blood supply to the brain relate with syncope occurrence.Currently,most people consider it mainly relatel to the age and gender of patients,history of syncope,family history,mental and psychological factors,dietary habits and other factors,but the exact risk factors of VVS remains further study of multi-center and a large sample of data.

Clinical Clerkship is the necessary stage from theory to clinical practice,As teaching hospital of Nanjing Medical University.we explore various kinds of methods of clinical practice quality improvement by emphasizing practice training,developing multiform teaching activities,highhghting autonomic learning and strengthening intemship management.

Objective To explore the status and influencing factors of posttraumatic growth (PTG) in breast cancer patients and identify the influence of cognitive appraisal on PTG and the relationship between PTG and cognitive appraisal. Methods A cross-sectional study was conducted. Totally 356 breast cancer patients were investigated with the revised Posttraumatic Growth Inventory (PTGI), the Cognitive Appraisal Scale. Results The average score of PTG in breast cancer patients was (55.06±14.36) points. There were significant differences between different education level and health-care payment patients in the total score of PTG (t=5.886, 5.154, P<0.01). The level of PTG was correlated with the patients′ cognitive appraisal way. It was negatively correlated with uncertain appraisal about disease and threat appraisal,and positively correlated with positive appraisal and responsible appraisal. The main prediction factors for PTG were positive appraisal, uncertain appraisal about disease, responsible appraisal, health-care payment and education level. All the variables could explain 42.7% variance of PTG. Conclusions Breast cancer patients in this study report moderate level of posttraumatic growth. The level of PTG in breast cancers is influenced by variables of patients′ education level, health-care payment and cognitive appraisal. Cognitive appraisal could predict the development of PTG significantly.

According to the best corrected visual acuity and the morphological changes of the macular fovea,responses to the neovascular age-related macular degeneration (nAMD) who receive anti-vascular endothelial growth factor (VEGF) therapy show large variability,including poor and non-responders.Various factors will be reviewed to account for poor and non-response to anti-VEGF therapy,such as the related susceptibility genes,factors related with the development of choroidal neovascularization and morphologic parameters,pharmacokinetics and tachyphylaxis.The future research should focus on comprehensive assessment of factors affecting the efficacy of anti-VEGF therapy to improve the therapeutic outcome of nAMD.

Objective To evaluate the efficacy and safety of low?level laser therapy(LLLT)for androgenetic alopecia, and to compare the therapeutic effect of LLLT alone versus in combination with finasteride tablets. Methods Thirty?nine male patients were randomly divided into the LLLT group(n=21)and combination group(n=18)to be treated with LLLT alone or in combination with oral finasteride tablets(1 mg/d)for 6 months. LLLT was given twice a week, and each session lasted 30 minutes. All the patients were photographed and asked to fill a questionnaire about subjective symptoms, and hair density (the number of hairs per unit area on the scalp) was determined by using a dermatoscope to evaluate the grade of alopecia, before the treatment, and 3 and 6 months after the treatment. Results The hair density in the LLLT group was significantly higher after 6 months than after 3 months of treatment and before the treatment(184.59 ± 21.17 vs. 169.24 ± 29.21 and 166.67 ± 32.94 hairs/cm2, both P<0.05), but was insignificantly different between before and after 3 months of treatment (P > 0.05). The hair density in the combination group significantly increased after 6 and 3 months of treatment compared with that before the treatment(201.80 ± 16.55 and 186.39 ± 17.97 vs. 157.85 ± 27.97 hairs/cm2, both P < 0.05), and was significantly higher after 6 months than after 3 months of treatment(P<0.05). No significant difference was observed in hair density between the two groups before the treatment(P>0.05), but the combination group showed increased hair density compared with the LLLT group after 3 and 6 months of treatment(both P<0.05). After 6 months of treatment, LLLT alone was effective in 17 patients, but ineffective in 4 patients, and the combination therapy was effective in 16 patients, but ineffective in 2 patients, with no significant difference in the response rate between the LLLT group and combination group (χ2 = 0.057, P > 0.05). During the treatment, 24(62%)patients felt less greasy, and 22(56%)reported less hair loss, with no discomforts reported by the patients except local warm feeling. Conclusion LLLT is indeed effective for the treatment of androgenetic alopecia with no adverse reactions.

Objective To study the effects of DMPS on ET-1 during experimental myocardial ischemia-reperfusion (I/R) injury.Methods 20 New Zealand rabbits were randomly assigned to 2 groups: I/R group and DMPS protection group with 10 in each group. The blood sample was obtained through vien at different time (5 min before ischemia, the end of the ischemia period and 0.5h, 1h, 2h, 4h, 6h after reperfusion ) in each group.The serum concentrations of ET-1 were detected with radioimmunology method. Results The levels of ET-1 of serum and cardiac tissues increased after ischemia and reperfusion, and were significant different compared with that before ischemia(P0.05).Conclusions The changes of ET-1 were significant when myocardial I/R. DMPS may effectively effect the levels of ET-1 after myocardial ischemia and during I/R injury,and have protecfion of myocardium from ischemia and reperfusion injury.

Objective To study the effects of DMPS on IL-1? during experimental myocardial ischemia-reperfusion(I/R)injury.Methods 30 New Zealand rabbits were randomly assigned to 3 groups:I/R group,DMPS protection group and Control group,10 in each group.The blood samples was obtained through vien at different time(5 min before ischemia,the end of the ischemia period and 0.5h,1h,2h,4h,6h after reperfusion)in each group.The serum concentrations of IL-1? were detected with radioimmunology method.Cardiac tissues samples were taken for determination of IL-1?.The ultrastructure changes of the Cardiac tissues were observed.Results The levels of IL-1? of serum and cardiac tissues increased after ischemia and reperfusion,and were significant different comparing with that before ischemia(P

AIM:To establish a new rat model of depression by the antagonistic relationship of antagonizing pairs of neurotransmitters in the brain.METHODS:Dopamine D1 receptor antagonist SCH23390 was injected into the hippocampus of the rats by microinjection at low, medium and high doses (1, 2 and 4 g/L) to establish a depression model.After modeling, the sucrose consumption, open-field and novelty suppressed feeding tests were used to evaluate the behaviors of the rats, and screen out the best modeling drug dose.The model of depressive rats was induced using the best modeling drug dose and the model rats were observed for 2 weeks.The stability of the model was evaluated by behavioral tests, and the contents of IL-1β and TNF-α in cerebrospinal fluid (CSF) were measured by ELISA to evaluate the safety of the model.The levels of the antagonizing pairs of neurotransmitters in the cerebral cortex and hippocampus were analyzed by the method of high-performance liquid chromatography-mass spectrometry (HPLC-MS), so as to evaluate the pathological characteristics of neurotransmitter imbalance in the brain of the model rats.RESULTS:After modeling, the rat weight, sucrose preference rate, and horizontal motion and vertical motion scores of open-field test were significantly decreased in eACh dose model group, and feeding latent periods of novelty suppressed feeding test were significantly increased, indicating a typical depressive behavior.The rats with the medium dose (2 g/L) of SCH23390 had the most significant depressive behavior.At 2 weeks after modeling, compared with the normal control group, the weight, sucrose preference rate, and horizontal motion and vertical motion scores in medium dose group were significantly decreased (P<0.01), while the feeding inhibition time was significantly increased (P<0.05).No significant difference in the content of IL-1β and TNF-α in the CSF of normal control group, blank control group and medium dose group was observed, indicating that the model did not cause obvious inflammatory injury, and the modeling method was safe.Compared with blank control group, the contents of 5-HT, NE and Glu in the left hippocampus of rats in medium dose group were significantly increased (P<0.01), and the content of DA and ACh showed decreasing trends.The contents of 5-HT, NE and Glu in the right hippocampus of the rats were significantly increased (P<0.05), and the contents of DA and ACh showed decreasing trends.The content of Glu in cerebral cortex was significantly increased (P<0.05), the contents of 5-HT and NE showed increasing trends, and the contents of DA and ACh showed decreasing trends, indicating that the model was basically consistent with the pathological features of neurotransmitter imbalance in the brain of depression.CONCLUSION:This method can successfully replicate the rat model of depression, which has the characteristics of typical and persistent symptoms, fast modeling, and safe and easy operation.Using the dosage of 2 g/L is more suitable.

Objective To explore the activity of Elemene for glioma cell from the cellular and molecular level. Methods The human glioma cell U251 was cultured. The effect of Elemene for human glioma cell proliferation was studied by MTT assay. Cell cycle, Fas, PCNA, bcl-2, intracellular Ca~(2+) and apoptosis were evaluated by flow cytometry analysis. Results Elemene exhibited antiproliferative effect on human glioma cell U251 markedly. The fifty percent inhibition on concentration (IC_(50)) of Elemene against glioma cells at different time points. 24 h was 40.60 μg/ml, the 48 h 38.14 μg/ml and the 72 h 34.35 μg/ml.Cell cycle was blocked in the S and G_2/M phases. The apoptosis ratio was increased by Annexin V staining markedly. Elemene decreased the gene expressions of PCNA and Fas, increased the intracellular Ca~(2+). There was no significant effect on the bcl -2 gene expression. Conclusion Elemene exhibits a marked antiproliferative effect on glioma cells and induces apoptosis by decreasing the expression of PCNA and increasing intracellular Ca~(2+). It also influences the expression of Fas. It might have no relationship with bcl-2 gene expression.