Objective To investigate the effect of purified single clonally mesenchymal cells (SCMSCs) on cardiac function in rat models and also try to find out wheter SCMSCs serve as a better source for transplantation than UMSCs, BM-MNCs and PB-MNCs. Methods SCMSCs were isolated, cultured, purified, cloned and expanded. UMSCs were isolated primarily by their tight adherence to the culture dishes. BM-MNCs and PB-MNCs were prepared by Ficoll-Hypaque gradient centrifugation. All cell characters were verified by fluorescence- activated cell sorter (FACS). A total of 5?10~6 PB-MNCs, BM-MNCs, UMSCs, and SCMSCs were transplanted into the ischemic zone immediately after MI. The cardiac function was evaluated by hemodynamic technique 1 month after the transplantation. The vessel density and cell differentiation were determined by histological techniques. Results SCMSCs expressed over 99% of the mesenchymal cell surface protein and none of the hematopoietic stem cell surface protein. Hemodynamics showed that transplantation of snMSC led to the greatest improvement in cardiac function, compared with PB-MNCs, BM-MNCs, and UMSCs transplantation. In consistence with cardiac function recovery, SCMSCs transplantation resulted in the greatest angiogenesis in the ischemic wall, and the greatest number of transplanted SCMSCs expressed these cardiomyocyte proteins, or vascular endothelial cell marker, in comparison with the other heterogeneous cells. Conclusion Transplantation of single clonally purified non-hematopoietic mesenchymal stem cells from human bone marrow showed the greatest imporvement in cardiac function compared to UMSC, BM-MNC, and PB-MNC in this study.

Objective To investigate the effects of emodin on the migration and proliferation of vascular smooth muscle cell (VSMC) and the metabolism of emodin in VSMC. Methods The effects of emodin on the migration or proliferation of vascular smooth muscle cell were measured by “transwell" migration system and MTT assay. Results The migration of VSMC could be significantly inhibited by emodin and the inhibitory ratio was 83.8% in 5 ?g/mL emodin group. The antiproliferative effect of emodin was in a dose- and time- dependent manner. However, the supernatant concentration of emodin insignificantly dereased after culture for 24 h. The cytotoxicity of emodin and cellular ROS was not influenced by CYP inducer or inhibitor. The mRNA expression of emodin's primary metabolic enzyme (cytochrome p450 oxidase, CYP) up-regulated insignificantly after treatment of emodin for 24 h. Conclusion Emodin can inhibit the migration and proliferation of VSMC and can not be metabolized by VSMC. Emodin may be a choice for the medication of drug-eluting stent.

Objective To evaluate whether ?G-455A gene polymorphism increases the risk of coronary heart disease(CHD) due to elevated plasma fibrinogen.Methods A total of 1 485 patients who had received coronary angiography due to chest pain or suspected cardiac ischemia by non-invasive examination were included in the study.According to the angiographic results,all the patients were divided into the control group(n=466) and coronary heart disease group(n=1 019).Patients in the coronary heart disease group were further divided into stable angina pectoris group(SAP,n=674) and acute coronary syndrome group(ACS,n=345) according to their clinical presentation.We investigated G-455A polymorphism of ? fibrinogen gene and plasma fibrinogen level in all the patients.Results Increased plasma fibrinogen levels were observed in CHD groups compared with controls(ACS: 380.92?92.35 mg/dL,SAP: 352.49?94.89 mg/dL,control: 311.72?87.09 mg/dL,P

Objective To explore ways and means to improve the investigator compliance through the evaluation and analysis of the investigator compliance of TCM clinical research projects of chronic diseases. Methods Totally 28 studies from the project Chinese medicine clinical study on prevention and treatment of chronic disease started in 2010 or 2011 and ended in 2015 were collected. The investigator compliance was analyzed by the evaluation form, which were drafted by quality control core team of TCM projects of chronic diseases, as research method performance, compliance of subjects inclusion and exclusion, integrity, accuracy and normalization of case report form in final quality evaluation for TCM clinical research on chronic diseases. Results There were 19 excellent studies according to investigator compliance, accounting for 67.9%, including 3 studies with ten score, accounting for 10.7%. There were 8 good studies according to investigator compliance, accounting for 28.6%. There was 1 study up to standard, accounting for 3.6%. 11 studies included unreasonable changes in the record during the process of implementation. 12 studies included missing in the filling of research records during the process of implementation. Conclusion In general, 28 studies of TCM linical research projects for chronic diseases show high investigator compliance. The existing problems are mainly found in the integrity and normalization of research records.

Objective To observe the clinical significance of detection of platelet-associated immunoglobulin (PAIgG).Methods Flow cytometry was used to detect PAIgG in 42 idiopathic throbocytopenic purpura (ITP) patients, 39 aplastic anemia (AA) patients, 21 patients with other autoimmune diseases and 20 normal controls. Rate of inefficient platelet infusion was calculated.Results Percentage of PAIgG positive in ITP, AA and other autoimmune diseases was higher than that in normal controls (P

BACKGROUND: Neuron-specific enolase, γtype isoenzyme that is specially present in the cytoplasm of neurons and neuroendocrine cells, is considered as a sensitive predictor for neuronal damage.OBJECTIVE: To observe the changes of serum neuron-specific enolase in patients with transient brain ischemic attack, so as to explore its relationship with the degree of neuronal damage.DESIGN: Case-control observation.SETTING: Department of Neurology, Jinan No. 4 People's Hospital.PARTICIPANTS: A total of 29 patients who were hospitalized in the Department of Neurology, Jinan No. 4 People's Hospital, due to transient brain ischemic attack (all called for emergent medical treatment within the onset of 6 hours) between March 2002 and May 2004 were enrolled in this study. There were 18 males and 11 females with the average age of(60.36t11.67) years. According to the duration of neural functional deficits, all subjects were divided into two groups, namely, transient-symptom group (≤ 6 hours) of 19 cases and lasting-symptom group (＞ 6 hours)of 10 cases. At the same time, 25 healthy controls, 15 males and 10 females with the average age of (62.34±9.65) years, rere selected from those who came for routine health examination.METHODS: Fasting elbow venous blood of 1 mL was collected only once from the subjects in control group; the same amount of blood was collected from the patients in transient ischemic attack group immediately after hospitalization, and at days 2, 3, 4 and 5. Roche Elecsys 2010 automatic analyzer was used to detect serum neuron-specific enolase. Neuronal damage was assessed with neurological deficit scale (defined as practical recovery if scores were reduced by 90%-100%; remarkable improvement if scores were reduced by 46%-89%; improvement if scores were reduced by 18%-45%; ineffective if scores were reduced by less than 17% or even the disease aggravated).MAIN OUTCOME MEASURES: The daily changes of serum neuronspecific enolase.RESULTS: All the54 subjects remained in the final result analysis. [1]Comparison of neuron-specific enolase density: It was significantly higher in transient brain ischemic attack group than in control group [(23.53±12.35) vs(14.29±6.83) μg/L, t=2.678, P ＜ 0.01]. [2] Curve of neuron-specific enolase changes during the acute stage: It began to increase at the early stage,reached the peak level on the next day, and gradually declined to the normal level in 4-5 days. [3] The level of serum neuron-specific enolase in the two groups with various durations of neurological deficit symptoms: It was obviously higher in transient-symptom group than in control group [(19.24±8.95)vs (14.29±6.83) μg/L, t=1.893, P ＜ 0.05], and higher in lasting-symptom group than in control group [(28.87±13.15) vs (14.29±6.83) μg/L, t=4.367,P ＜ 0.001]. [4] The level of neuron-specific enolase was positively correlated with the duration of neuronal damage (r=0.815, P＜0.01).CONCLUSION: Serum neuron-specific enolase increases within a short term after transient brain ischemic attack and reaches the peak level at around 24-36 hours, suggesting that the detection of serum neuron-specific enolase has a guiding value in assessing the severity of transient brain ischemic attack.

Objective To investigate the manifestations of MR imaging and histopathology of early postoperative normal brain, and to define the correlation between MRI and histopathology. Methods Thirty six New Zealand rabbits weighing 2.0 to 3.0 kg were divided into 10 groups according to the different postoperative days: 1 to 10 day. Six animals were in groups 3, 5, 7, 10, and 2 were in the other groups. A partial resection of the parietooccipital region was performed under the usual aseptic conditions after the animals were anesthetized intravenously with 3% pentobarbital (30 mg/kg). MR imaging procedures consisted of pre and postcontrast scanning were carried out on postoperative 1 to 10 day respectively. Brain tissue samples were obtained to be prepared for examinations immediately after MR scanning. Histopathological study was made under microscope and electron microscope. The findings of MRI were compared with pathology findings. Results (1) Surgical margin contrast enhancement on MR images could be seen 24 hours after surgery. (2) The degree of contrast enhancement increased gradually before 5 days postoperatively, and no remarkable changes were present from 5 to 10 days. (3) The disruption of blood brain barrier(BBB) is the main cause of contrast enhancement during the postoperative 3 days. After that period, mechanism responsible for contrast enhancement is the formation of neovascularity and broken BBB, an increase in the number of neovascularity play a predominant role in the contrast enhancement in normal postoperative brain tissue. Conclusion The characteristics of enhanced MRI present at the surgical margin followed a typical time course during the early postoperative period. The role of neovascularity and BBB disruption in the formation of contrast enhancement at surgical margin vary with time. Knowledge of the characteristics on postoperative MR images of the normal brain can help in differentiating benign changes from malignant gliomas residual.

Objective To study the mechanism of hypoxia inducing factor-1α(HIF-1α)pathway in establishment of hypoxia inducing low endometrial receptivity.Methods RL95-2 cell lines.the ideal model of study ER,were cultured in hypoxia condition induced by CoCl2,and the expression of mRNA and protein of HIF-1α and tumor necrosis factor like weak inducer of apoptosis(TWEAK)were measured by reverse transcription-PCR and western blot. The apoptosis rate was analyzed by flow eytometry.Then the mechanism confirmed by comparing the two factors in endometrium and the ultra-appearance of inflammatory reaction and apoptosis between recurrent spontaneous abortion women and control women.Results (1)On difierent time point(0,12,24,48 hour),mRNA expression of HIF-1α were 0.272±0.010,0.354±0.020,0.591±0.020.0.890±0.020,while the expression of TWEAK were 0.104±0.010,0.510±0.020,1.021±0. 020, 1. 237 +0. 040, respectively, the expression level between 12, 24, 48 and 0 hour all showed significant differences (P＜0. 05 ). (2) Protein expression of HIF-1α were 0. 853 +0. 010, 0. 931 ±0. 030,1. 124±0.010, 1.317±0.0 20 respectively, while was 0.042±0.010, 0.091 ±0.010, 0. 131±0.020,0. 205 ±0. 030 in TWEAK expression, the different level were statistically significant ( P＜0. 05 ). ( 3 )With longer culture under hypoxia, the cell apoptosis rate increased obviously. The apoptosis rate of each time point were ( 3.2±1.4 ) %, ( 16. 2 ±3.2 ) %, ( 26. 3±3.5 ) %, ( 31.8±3.5 )%, the differences between 12, 24, 48 and 0 hour had significance (P ＜0. 05). (4) The positive rate of HIF-1α stained in epithelium cells and stroma cells of test group were 32. 3%, 8.4% and 16. 7%, 7. 3% in control group. The positive rate of TWEAK were 28. 3%, 3.9% in recurrent spontaneous abortion group and 11.6%, 2. 7% in control group ( P ＜0. 05 ). The ultra-appearance of inflammatory cell infiltrated and apoptosis were obvious in test group. Conclusions Cell inflammation reaction and apoptosis induced by HIF-1α pathway may participate the mechanism of hypoxia inducing low endometrial receptivity. HIF-1α might become a novel target for improving poor endometrial receptivity.

Objective To explore the change of multiple electrocardiogram(ECG) parameters and their impact on P-R interval in pregnant women.Methods Healthy women aged 20-40 years were enrolled and divided into 4 groups:control group (n =194),early-pregnant group (n =172),mediate-stage group (n =105)and late-phase group(111).The following data were collected for analysis:heart rate (HR),axis,rotation,P-R interval(on lead V3),and p wave duration(on lead Ⅱ).Between-group analysis and multiple liner regression analysis were conducted.Results Compared with the control group,we found no significant difference in the early-pregnant group,but HR significantly increased in the mediate-stage group and late-phase group((77.76 ± 14.75) beat/min vs.(78.12 ± 11.24) beat/min vs.(84.21 ± 11.91) beat/min vs.(88.15 ± 15.05) beat/min,P ＜ 0.05).BP increased with the duration of pregnancy.Axis and P wave duration decreased with the duration of pregnancy.We found no significant difference in the early-pregnant group,but significantly decreased axis and P wave duration in the mediate-stage group and late-phase group (axis:(61.11 ± 225.84) ° vs.(56.97 ±25.17)° vs.(50.11 ±21.78)° vs.(41.72 ±28.36)°,P ＜0.05;P wave duration:(0.100 ±0.015)s vs.(0.099 ± 0.012) s vs.(0.095 ± 0.013) s vs.(0.093 ± 0.013) s,P ＜ 0.05).P-R interval was significantly shorter in women at all the three stages of pregnancy than in the healthy controls ((0.145 ± 0.021)) svs.(0.138±0.019) s vs.(0.133 ±0.020) s vs.(0.131 ±0.019) s,P ＜0.05).There was no significant difference found in heart rotation proportion among the four groups.Multiple liner regression analysis indicated that only pregnancy factors (t =-4.607,P =0.000) and p wave duration (t =9.339,P =0.000) had significant influences on P-R interval.Conclusion P-R interval is negatively correlated to pregnancy stage and positively correlated to p wave duration,but irrelevant to HR and axis in pregnant women.

Based on hospital development cycle and the core rigidities theory,the authors made a strategic analysis on the building of research-oriented hospital of the Eastern Hepatobiliary Surgery Hospital.They put forward that building a research-oriented hospital is key to exceeding the core rigidities of the hospital and promoting core competence.In their practice,they developed the model featuring innovation culture as the leader,hospital-institute in one as the pattern,composite talents as the core,integrated innovation as the mechanism,and high-level medical cooperation as promoter.