BACKGROUND: Bioglass is a kind of bioactive material to repair the bone defect and promote the bone growth. Many studies have focused on the underlying mechanism of promoting the proliferation of osteoblasts, but no reports concerns about the human osteoblast growth cycle. OBJECTIVE: To observe the effect of bioglass on human osteoblasts growth cycle in vitro. DESIGN, TIME AND SETTING: An observation study osteoblasts growth cycle in vitro was performed in the Haematology Research Institute of Jiangsu Province and Department of Thrombus, Haematology Research Institute of Soochow University First Affiliated Hospital between October 2005 and March 2006. MATERIALS: Nine specimens of trabecular bone were harvested from femoral head following total hip replacement and other three specimens of trabecular bone were harvested from condyles of femur following total hip replacement. Bioglass conditioned medium was produced by Gibco Company (USA) and Dulbecco’s modified eagle medium (DMEM) was produced by Hangzhou Sijiqing Biological Engineering Materials Co., Ltd (China). METHODS: The ionic products of bioglass had been introduced to a cell culture medium by dissolving bioglass particles into DMEM fluid at 37 ℃ for 24 hours. The modified DMEM with ionic products of bioglass dissolution was used as the experimental medium, while the DMEM without bioglass modification was used as the control medium. The human osteoblasts isolated from trabecular bone were treated by the mediums and the time of osteoblast growth cycle was examined. Osteoblasts were treated for 7 days with two kinds of culture media. MAIN OUTCOME MEASURES: Cell growth index as determined using MTT colourimetry. The percentages of human osteoblasts at presynthetic phase, synthesis phase, post-synthesis phase were recorded by flow cytometry every day, resulting in the cell proliferation activity index, synthesis phase fraction and proliferous index. RESULTS: The concentration of Si in the bioglass conditional medium was 26.12% of the control medium (P

Objective To abserve the change of contents of blood serum TNF-? and IL-8 of alcoholic fatty liver rats.Methods To observer the change of serum activities of alanine aminotransferase(ALT),and serum contents of tumor necrosis factor(TNF)-?,interleukin(IL)-8 and hepatic histopathology observed by microscope,which the rats with alcoholic fatty liver were fed by high lipid food and drunk 10% alcohol qd?10 weeks.Results The model group rats' liver became more fatty and activities of ALT,and the contents of TNF-? and IL-8 in blood serum were higher than the normal group rats and there was significant difference(P

Twelve cases of pelvis sarcoma around acetabulum were selected from Department of Orthopaedics, Wuxi Second Hospital, Nanjing Medical University between January 2001 and December 2007 including 5 males and 7 females, aged 51-72 years. According to pathological diagnosis, there were 3 cases of sarcoenchondroma, 2 cases of osteosarcoma, 3 cases of giant cell tumor of bone, 2 cases of adenocarcinoma, and 2 cases of osteoblastoma. According to tumor position by Enneking dividatur sectors, there were 5 cases of Ⅰsector, 4 cases of Ⅱsector, and 3 cases of Ⅲ sector. The Harris score of pre-replacement was 88.5?8.8. All cases were treated by saddle prosthetic replacement successfully, and no accidents happened. The operation time was 2.5-3.5 hours; blood volume was (1 250?407) mL. Twelve cases were followed up for 18 months (range 5-36 months). One case died of tumor metastasis and body exhaustion 5 months postoperation. Infection of incision took place in 1 case, and cured by operation with antibiotic combined with bone cement chain pearls. The Harris scores 4 months post-replacement: 6 cases were between 40-49, 3 cases between 50-59, and 3 cases between 60-69. Twelve cases could walk with double orthosis 3 months postoperation, and 3 cases could walk with single orthosis 6 months postoperation; 1 case walked with near normal walking, but major walking was bad. No artificial joint loosening or dislocation occurred. Although the joint function of major cases treated by saddle prosthetic replacement was not fairly satisfactory, it is a better treating method for malignant tumor whose limbs can be reserved and live their daily life by orthosis.

Background Matrix metalloproteinases (MMPs) play important roles in the formation of choroidal neovascularization (CNV),but its mail origin is not ocular cells in situ.Bone marrow-derived cells (BMCs) participate in the formation of CNV and is probably a primary source of expressing MMPs in CNV.MMP-2/MMP-13 is speculated to be the regulating target genes of miR188-5p.Objective This study was to verify whether BMCs are the main source of MMPs,and whether the MMP-2/MMP-13 expression is potentially regulated by miR188-5p.Methods BMCs expressed green fluorescent protein (GFP) from transgenic female C57BL/6J mice were transplanted to female wild-type C57BL/6J mice to establish C57BL/6J.GFP chimeras models,and 42 mice with chimerisms more than 85％ by flow cytometry were included as the experimental group.Other 42 wild-type C57BL/6J mice without the BMCs transplantation were enrolled as the control group.CNV was induced by laser coagulation of retinas on the mice of both groups.MMP-2/MMP-13 levels in the retinochoroid tissue were quantified by ELISA at day 1,3,5,7,10,14,and 28 after photocoagulation.The expression of miR188-5p mR NA in the retinochoroid tissue was assayed by real-time quantitative PCR (RT-qPCR).Immunofluorescence stain and fluorescent in situ hybridization were used to identify the MMP-2/MMP-13 and miR188-5p expressed by GFP-positive BMCs in CNV,and the expression level was quantified by images analysis.Results The proportion of GFP+ mouse mononuclear cells was (90.67±3.02) ％ in the C57BL/6J.GFP chimeras.The concentration changes of MMP-2/MMP-13 in retinochoroid homogenate showed a same tendency with the lapse of time between the experimental group and the control group (MMP-2:F=0.060,P =0.810 ; MMP-13:F =0.012,P =0.915).The expression level was zoomed in retinochoroid tissue after induce of CNV with the maximal value on the third day in both groups,and the proportion in the experimental group was 64.21％ ;while the expression level of MMP-13 was slowly raised after induce of CNV with the peak at the seventh day,and the proportion in the experimental group was 79.61％.A complementary association point of miR188-5p was exhibited in the 3 '-untranslated regions of MMP-2 or MMP-13 by target gene prediction.The expression level of miR188-5p mRNA in the BMCs of CNV area was sharply declined after induce of CNV with the lowest value on the seventh day.A negative correlation was found between the expressing level of miR188-5p and MMP-13 protein (r=-0.868,P＜0.05) as well as early stage of expression level of MMP-2 protein (r=-0.997,P＜ 0.05).Conclusions The elevation of MMP-2/MMP-13 expression levels is associated with the formation of CNV,and the regulation of miR188-5p expression in the BMCs of CNV area is responsible for increase of MMP-2/MMP-13 expression.The tendency of miR188-5p expression is inversed with MMP-2/MMP-13.

The pharmacokinetic study of Rifapentine by daily oral administration for 10d and followed by twice weekly for another 3 weeks in 9 volunteers and in comparism with Rifandin were reported. The results showed that the absorption and excretion of Rifapentine were markedly slower than that of Rifandin, its T1/2 was 15h. The Peak plasma level and T1/2 decreased after repeated administration of the drug. This suggested that Rifapentine and Rifandin in similar to Ri-fampin were hepatic microsomal enzyme inducers.

Objective To investigate and compare the change of extravascular lung water (EVLW) and levels of cytokines in septic patients without clinical acute lung injury (ALI) /acute respiratory distress syndrome (ARDS) with those in spetic patients with sepsis-induced ALI/ARDS in order to determine the role of EVLW involved in the pathogenesis of lung injury in the patients by quantifying the relationship between EVLW and biomarkers of lung injury in patients with sepsis.Methods A total of 40 septic patients complicated either with or without clinical ALI/ARDS after sepsis. In each patient,transpulmonary thermodilution (PiCCO) was used to measure cardiovascular hemodynamics and EVLWI for 7 days via an arterial cannula indwelled within 72 hours after diagnosis of severe sepsis was made, and serial bronchoalveolar lavages (BAL) were carried out.Other examinations including blood gas analysis,ventilator parameters,chest X-ray and the levels of pro-inflammatory cytokines such as tumor necrosis factor (TNF-oα),interleukin-1 in the BAL were recorded.In-hospital and ICU mortalities were also observed.Results Of total 40 patients,29 were complicated with clinically defined septic ALI/ARDS ( ARDS n =15,and ALI n =14).The septic patients complicated with ALL/ARDS had significantly higher amount of EVLWI and higher levels of TNF-α and interleukin-1 in the BAL than patients without ALI/ARDS ( P ＜ 0.05).The arterial oxygen tension/fractional inspired oxygen ratio,lung injury score,and the levels of TNF-α,IL-1 in the BAL correlated with EVLWI.Moreover,in-hospital mortality,ICU mortality and the length of ICU stay of the patients with high amount of EVLWI were markedly increased than those of patients with low amount of EVLWI. Conclusions In septic patients complicated with ALI/ARDS, the extravascular lung water index correlates with oxygenation,lung injury severity and inflammatory cytokines in lung.Determination of EVLWI may be useful for evaluation of severity of lung injury and prognosis of septic patients.

Objective To analyze the alterative characteristics of the extravascular lung water (EVLW ) in the patients with septic shock and clarify its value on the prognosis of these patients.Methods By the methods of retrospective analysis,according to the ultimate survival,21 patients with septic shock were divided into survivor group (10 cases) and non-survivor group (11 cases).The clinical features of the patients were observed and hemodynamic monitoring was made with PiCCO monitor.The EVLW was measured and the relationship between the EVLW and the prognosis of patients was analyzed.Results On the first,second and third day,EVLW was (12.7 ±1.8),(11.3 ±1.3),(10.1 ±1.3) ml/kg in survivor group,and (14.4 ± 1.0),(14.6 ± 1.4),(14.6 ±1.3) ml/kg in non-survivor group respectively,and there were statistical differences between two groups (P <0.05).However,on the second day after the intensive therapy,EVLW in survivor group dropped significantly(P＜0.05),but the non-survivor group only declined slightly,and compared with the result of the first day,there was no obvious difference (P >0.05).Conclusions The EVLW in the patients with septic shock increases significantly.The dynamic changes of the EVLW may be one of the factors for predicting the prognosis of patients with septic shock.

Objective To investigate effects of dynamic hip screw (DHS) fixation assisted with blocking screws in treatment of intertrochanteric fracture.Methods A total of 150 patients with intertrochanteric fracture were selected as the combined treatment group,of which the patients managed by DHS intemal fixation were followed by the parallel placement of a blocking screw closely beneath the main screw for stability with its end rested on the plate.Another 87 patients managed by DHS fixation alone were determined as the control group.The surgical outcomes of the two groups were analyzed and compared.Results Good fixation without external displacement of femoral neck and cut-out of the main screw in femoral head was achieved in the combined treatment group.Also,fracture nonunion or death did not exist in the combined group.The patients in combined treatment group could take care of themselves after operation in the absence of severe pain and functional disturbance,with higher excellence rate (98.7％)than that in control group (P ＜ 0.01).Whereas,the operation failure rate was significantly lower in combined treatment group than in control group (P ＜ 0.05).Conclusion DHS fixation assisted with blocking screws is an ideal treatment of incomplete intertrochanteric fracture in medial wall of calcar femorale for it can achieve reliable fixation and definite curative effect,favor fracture healing,early functional exercise and low incidence of postoperative complications.

Objective To explore the correlation between caring behavior and critical thinking of nursing students in clinical practice. Methods Totally 203 nursing students in clinical practice were investigated with Critical Thinking Disposition Inventory- Chinese Version (CTDI- CV) and Caring Behavior Scale (CBS). Results The structural model obtained a good fit. Critical thinking and caring behavior were positively correlated with each other(β=0.46,P<0.01). Conclusions Nursing students′caring behavior could improve their critical thinking. With the cultivation of critical thinking of nursing students, nursing educators should pay attention to improving their caring behavior.

Objective To investigate the effect of posterior pedicle screw reduction and fixation,decompressive laminectomy and massive autogenous bone grafting using bone particles harvested from resected vertebral body in treatment of lumbar spondylolisthesis.Methods Fifty-six cases of lumbar spondylolisthesis treated from June 2005 and June 2006 were reviewed retrospectively.According to Meyerding classification,35 cases were classified as grade Ⅰslippage and 21 cases as grade Ⅱ slippage.There were 19 spondylolisthesis at L4/5 and 37 at L5-S1.After posterior pedicle screw reduction and fixation,decompressive laminectomy and massive autologous bone grafting using particles of resected vertebral body,surgical outcome was analyzed.Results All cases achieved bone fusion without evidence of nail breakage or nerve injury.According to Macrab criteria,the results were excellent in 53 cases and good in three.Moreover,both the full reduction rate and interbody fusion rate were 100％.Conclusion Posterior pedicle screw reduction and fixation,decompressive laminectomy plus massive autogenous bone grafting is one of the ideal treatments for lumbar spondylolisthesis,for it achieves satisfactory fixation,decompression,reduction and fusion.