As a major component of the hematopoietic microenvironment,stromal cells have been proved to support hematopoiesis. This review describes the constitution, origin of stromal cells and its mrechanism of regulate hematopoiesis, and then elaborates that the stromal cells play a important role in the hematopoietic restitution of hematopoietic stem cell transplantation.

Objective To analyse imaging features of atypical meningioma.Methods There were 17 cases with atypical meningiomas proved by pathology,7 cases were male,10 cases were female,ranged in age from 34～69 years.17 cases all examined with CT,and 10 cases with CT enhanced scanning;12 cases examined with MRI and 8 cases with MR enhanced scanning,5 cases examined with DSA.Results The major imaging features of atypical meningioma included:the borders of tumors were mostly irregular,nonhomogeneous density or signal on plain CT and MRI,nonhomogeneous enhancement on enhanced CT and MRI.Cystic and necrotic changing and the invasion of cranial bone and adjacent structure could be seen.5 cases with dural tail sign on MRI,3 of them,this sign was short,thick and irregular.Heavy staining was showed on DSA.Conclusion Atypical meningiomas are of some clinical and imaging features.

Currently, monitoring system of awareness of the depth of anesthesia has been more and more widely used in clinical practices. The intelligent evaluation algorithm is the key technology of this type of equipment. On the basis of studies about changes of electroencephalography (EEG) features during anesthesia, a discussion about how to select reasonable EEG parameters and classification algorithm to monitor the depth of anesthesia has taken place. A scheme which combines time domain analysis, frequency domain analysis and the variability of EEG and decision tree as classifier and least squares to compute Depth of anesthesia Index (DOAI) is proposed in this paper. Using the EEG of 40 patients who underwent general anesthesia with propofol, and the classification and the score of the EEG annotated by anesthesiologist, we verified this scheme with experiments. Classification and scoring was based on a combination of modified observer assessment of alertness/sedation (MOAA/S), and the changes of EEG parameters of patients during anesthesia. Then we used the BIS index to testify the validation of the DOAI. Results showed that Pearson's correlation coefficient between the DOAI and the BIS over the test set was 0.89. It is demonstrated that the method is feasible and has good accuracy.
Algorithms ; Anesthesia, General ; Decision Trees ; Electroencephalography ; Entropy ; Humans ; Intraoperative Awareness ; Monitoring, Physiologic ; Propofol

BACKGROUND:Considering the risk of lack of bone in revision and the bone coverage of component,it is advisable to use bone grafting to increase bone stock in patients with adult Crowe type Ⅲ developmental dysplasia of the hip (DDH) in the first total hip arthroplasty (THA).OBJECTIVE:To investigate the effectiveness of impaction bone grafting with morselized bone and bone paste for acetabular defects of adult Crowe type Ⅲ DDH in THA.METHODS:Forty cases (45 hips) of Crowe type Ⅲ DDH were enrolled,including 8 males and 32 females,aged 31-68 years.All the components were reconstructed at the anatomic acetabulum combined with deepening acetabulum and putting the centre of rotation medially and distally during THA procedures.The patients were all followed up and evaluated with Harris score,limp length,displacement of the centre of rotation,cup coverage,and postoperative complications.RESULTS AND CONCLUSION:The average follow-up was 32.7 months.Acetabular rotation centers of all the cases were recovered (near) to normal.The incisions healed by first intention and there was no complication such as infection,dislocation,prosthesis loosening.The acetabular cup prosthesis did not displace and was covered well by bone at the last follow-up,the grafted bone particles got radiological osseointegration and the bone sclerosis zone disappeared.No radiolucent lines and screw fracture were detected.The Harris scores of affected hips at the last follow-up were significantly higher than those before surgery(P=0).The average leg length was increased (2.31 ±0.18) cm.The mean cup coverage was 78.1％.The postoperative horizontal and vertical distance of the hip center were shorter than those before surgery (P=0).Reconstructing the acetabulum with autogenous morselized bone graft impaction can effectively restore the acetabular coverage,maintain the stability of acetabular cup and provide better relative bone stock in THA for Crowe type Ⅲ DDH in adult,and moreover,the short-term effect is satisfactory.

BACKGROUND: Hip-preserving treatment is advocated in the treatment of early avascular necrosis of the femoral head.OBJECTIVE: To compare the clinical efficacy of simple core decompression and three-dimensional porous core decompression combined with autologous bone marrow transplantation on early avascular necrosis of the femoral head.METHODS: Thirty patients (39 hips) with early avascular necrosis of the femoral head at phase I-II according to the staging criteria of the Association Research Circulation Osseuse (ARCO) who had been admitted to the First Affiliated Hospital of Luzhou Medical University between March 2011 and May 2016 were surgically treated and followed up.Seventeen patients (22 hips, trial group) were treated with three-dimensional porous core decompression combined with autologous bone marrow transplantation, including 10 cases of ARCO stage I and 12 cases of ARCO stage II; the other 13 patients (17 hips, control group) were treated with simple core decompression, including 7 cases of ARCO stage I and 10 cases of ARCO stage II. Harris scores, X-ray and magnetic resonance imaging were used to evaluate the surgical efficacy at 1, 3, 6, 9, 12, 18, 24, 30, 36 months after the operation.RESULTS AND CONCLUSION: The incision healed primarily in all patients, and no infection occurred. The follow-up lasted for 1-3 years (average 2.5 years). At the last follow-up, the Harris scores in both trial group and control group were significantly improved compared with the baseline (P < 0.05); moreover, the Harris scores of ARCO stage I and II patients were significantly higher in the trial group than the control group (P < 0.05). Collapse of the femoral head was observed in one hip (stage I) and one hip (stage II) of the trial group, and in three hips (stage I) and five hips (stage II) of the control group, and then hip arthroplasty was performed. The number of the patients developing collapse of the femoral head in the trial group was significantly less than that in the control group (P < 0.05). Compared with simple core decompression, three-dimensional porous core decompression combined with autologous bone marrow transplantation is more adept to improve patient's function and delay disease progression in the treatment of ARCO stage I and II early avascular necrosis of the femoral head.

For medical student, diagnostic practice is the first step of clinical study. To penetrate the humanities education in diagnostic teaching,the combination with practice from the following steps as physical examination, laboratory examination and interrogation, would cultivate medical students' humane quality imperceptibly and play an important role in creating noble medical ethics of them.

Objective To survey on the knowledge,attitude and practice about hypertention in elderly patients and its relation to blood pressure control.Methods A sampling survey on the knowledge,atitude and practice about hypertention were carried out in a target population of 47 572 elderly hypertensive patients from 5 communities in Xuhui District of Shanghai during May 2011 to July 2011.Total 3800 questionairres were distributed and 3328 responded with a response rate of 87.5％.Results Among 3328 responders,3036 were aged above 65 years with a mean age of (76 ±7) years and 43.3％ were males.The rates of knowledge about hypertension were 88.5％-97.8％.General practitioners in out-patient service were the major source of knowledge.Raults revealed that 81.9％ had received health education before;81.8％ requied a regular health education; 67.2％ had self-tested blood pressure weekly; 89.6％ controlled salt intake; 66.8％ attended outdoor activities weekly with (5.6 ±2.1) times a week and (45 ±28) min each time.The blood pressure control rate in uncomplicated hypertensive patients was higher than those complicated with diabetes,coronary heart disease or stroke (62.3 ％ vs.17.0％,P ＜ 0.01).Knowing high blood pressure was related to salt intake (OR =3.364,P ＜ 0.01),hoping a regular health education about hypertension (OR =1.718,P ＜ 0.01) were factors contributing to blood pressure control in uncomplicated hypertensive patients; while self-testing blood pressure once or twice a month(OR =2.572,P ＜ 0.01)was contributing factor to blood pressure control in complicated hypertensive patients.Conclusions Elderly hypertensive patients from communities in Shanghai have enough knowledge,positive attitude but lack practices.General practitioners should carry out personalized and stronger health education focued on behavioral changes for those patients.

AIM:To investigate effects of thrombopoietin(TPO) and TPOⅡ on human platelet activation in vitro. METHODS:Human platelets were incubated in the phosphate-buffered saline containing rhTPO or TPOⅡ at the concentration of 100 μg/L for five minutes. In order to determine the rate of platelet activation. The CD62P and CD41 expressions on platelets were analysed by flow cytometry using fluorescence labelled monoclonal antibody to CD62P and CD41. RESULTS:The results demonstrated that expression of CD62P on platelets which were incubated with rhTPO or TPOⅡ didn't increase compared with that of contrast group. CONCLUSION:Both rhTPO and TPOⅡdidn't cause the disorder of platelet activation.

Objective To explore the nicotine dependence levels and the influencing factors of dependence among rural-to-urban migrant workers in Shanghai so as to provide scientific rationales for an effective implementation of tobacco control.Methods Multi-stage randomized sampling was used to select a total of 5 856 rural-to-urban migrant workers from 7 districts in Shanghai.Fagerstrom Test for Nicotine Dependence ( FTND) and logistic regression model were used to analyze the association between nicotine dependence and relevant risk factors.Results The current smoking prevalence was 23.7%.The average FTND score for current smokers , high dependence and low dependence were 3.38 ±2.49, 7.00 ±1.07 and 2.23 ±1.71 respectively.The high and low dependence rates were 21.7% and 78.3%.The results of logistic regression showed that education , duration of smoking and length of migration were associated with nicotine dependence.Lower level of education was more prone to high nicotine dependence.Those with a lower education had a higher risk of nicotine dependence ( junior high school: OR=1.742, primary school or lower: OR =1.994 vs.senior high school or higher ).High nicotine dependence increased with the duration of smoking (smoking 6-10 years:OR=3.007, 11-15 years:OR=4.076, 16-20 years:OR=5.451, 20 years or more:OR=5.726 vs.5 years or less).Length of migration over 3 years was less likely to have a high nicotine dependence (3-5 years: OR=0.602, more than 5 years: OR=0.407 vs.<1 year) .Conclusion The rate of high nicotine dependence is high among rural-to-urban migrant workers in Shanghai.Level of education , duration of smoking and length of migration are significant influencing factors of nicotine dependence.

Objective To survey the mental health status of rural-to-urban migrant workers in Shanghai.Methods The survey subjects were selected from migrant workers in Shanghai with a multi-stage stratified cluster sampling method.The Symptom Check List ( SCL-90 ) scores were used for evaluation of metal health status.Results The prevalence of mental health problem of 5 626 rural-to-urban migrant workers in Shanghai was 18.8% ( 1 058/5 626 ).The mean total score of SCL-90 was 114.86 ±31.21.Compulsive-obsessive, interpersonal sensitivity, hostility ranked the top three among 9 factors, with scores of 1.37 ±0.43, 1.31 ±0.43 and 1.30 ±0.41 respectively.The mean total scores and scores of 9 factors of rural-to-urban migrant workers in Shanghai were lower than those of Chinese adults norm the mean total scores(129.96 ±38.76) ( t =-15.34, -3.84 --24.08 respectively, all P <0.01) .There were significant differences in mental health among migrant workers with different age , education , marital status , living conditions and occupation (all P<0.05).Conclusion The prevalence of mental health problems in Shanghai rural-to-urban migrant workers is high, with are related to their age, education, marital status, living conditions and occupation.