[Objective]To assess the early diagnosis and treatment and outcome of patients with crush syndrome in earthquake disaster.[Method]We conducted a retrospective analysis of 27 patients with crush syndrome and subsequent acute renal failure (ARF) and wound complication who were treated in our university hospital.All of patients had been extricated from buildings that collapsed in the Wenchuan earthquake.Crush injury involved the upper extremities and low extremities.Each patient received intravenous fluids and diuretic drugs.Twenty-one patients received hemodialysis.Emergency fasciotomy performed in 11 patients and amputation were performed in 16 patients,4 to 102 hours after extrication.[Result]No patient died.Twenty-one patients among the ARF patients were retracted from hemodialysis.Among the patients who were performed fasciotomy or amputation,13 patients had wound complication including infection,however,the wounds in 10 patients were healed by dressing change,debridement and coordinate treatment with ICU and related subjectives.[Conclusion]Crush syndrome requires urgent recognition and prompt surgical treatment with simultaneous measures to control hyperkalemia and ARF.Wound healing is a difficult task for the crush syndrome patients.The authors believe that immediate intensive care therapy and multisubjective coordination would improve the survival rate.

Objective: To investigate the intervention effect of astragaloside on the expression of nuclear factor??(NF-?B) injured by hypoxia/reoxygenation(H/R) in vascular endothelial cells.Methods: The human umbilical vein endothelial cells(hUVECs) were cultured and passaged.After the third generation,hUVECs were randomly divided into three groups: control group,H/R group and astagaloside group.The cells in the control group were cultured under normal conditions;the cells of H/R group were cultured under hypoxia,in a closed container with oxygen concentrations below 1% for 1 hour,and then under normal conditions for 1 hour in a CO2 foster box;the hUVECs in astragaloside group were pretreated by different dose of astragaloside(the final concentrations of 20,40,80 mg/L) at the time of pre-hypoxia,after 12 hours of the pretreatment,they suffered from H/R.The concentration of intercellular adhesion molecule-1(ICAM-1) and content of malondialdehyde(MDA) in supernatant were detected respectively by ABCenzyme linked immunosorbent assay(ELISA) and thio-barbituric acid method.The expression of NF-?? of the vascular endothelial cells was analyzed by immunohistochemistry.Results: Compared with the control group,the content of MDA and concentration of ICAM1 in the supernatant fluid were remarkably increased in the H/R group(MDA content(6.98?1.15) ?mol/L vs.(2.38?0.49) ?mol/L,ICAM-1 concentration(3 169.01?132.75) ng/L vs.(995.14?74.93) ng/L,both P

BACKGROUND:Several studies have demonstrated embryonic stem cells induced neural precursor cells can promote functional recovery in rats with spinal cord injury.
OBJECTIVE:To study the effect of in vitro cultured embryonic stem cells induced neural precursor cells in rats with spinal cord injury.
METHODS:Total y 144 rats were randomly divided into three groups. Experiment group and control group rats had spinal cord transection injury. Embryonic stem cells-derived cells were injected into the vertebral canal at rostral and caudal segment perilesional y for the experiment group whereas PBS solution was injected instead of cells in the control group. Sham surgery group rats had only laminectomy without any spinal cord injury and treatment.
RESULTS AND CONCLUSION:The experimental result showed that at day 21 post-injury, the regional expression of transforming growth factor-β1 was greater in rats from the control group in comparison to the experiment group (P<0.05). At each time point after spinal cord injury in rats, the expression of myelin basic protein in the spinal cord was significantly higher in the experiment group than the control group (P<0.05). After celltransplantation, Basso, Beattie, and Bresnahan scores of the experiment group at different time points were significantly higher than those of the control group (P<0.05). Transplantation of in vitro cultured embryonic stem cells induced neural precursor cells can reduce the late expression of transforming growth factor-β1, and can increase the expression of myelin basic protein which contributes to the recovery of rats with completely transected spinal cord injury.

AIM: To investigate the intervention effect of astragaloside on adhesion of polymorphonuclear neutrophils (PMN) and vascular endothelial cells and on expression of nuclear factor-?B (NF-?B) in human umbilical vein endothelial cells (hUVECs) injured by hypoxia/reoxygenation due to ischemia/reperfusion. METHODS: The experiment was performed at the Cell Bioengineering Laboratory of Institute of Cerebrovascular Diseases, Affiliated Hospital of Medical College, Qingdao University from September 2005 to May 2006. ①Neonatal umbilical cords were offered by Department of Gynecology and Obstetrics in Affiliated Hospital of Medical College of Qingdao University, with informed consent of puerperant and their families. The experiment was accorded with ethical standard of Helsinki declaration. ②The hUVECs were cultured to the future passage. After the third passage, hUVECs were randomly divided into three groups. Cells in a control group were cultured under normal conditions; Cells in a hypoxia/reoxygenation group were cultured under in closed container with hypoxia for 1 hour, and then under normal conditions for 1 hour; The hUVECs in a astragaloside group were pretreatment by different doses of astragaloside (20, 40, 80 mg/L). After 12 hours, hUVECs suffered from hypoxia/reoxygenation. ③The concentration of intercellular adhesion molecule (ICAM)-1 and content of malondialdehyde (MDA) in supernatant were detected by enzyme linked immunosorbent assay (ELISA) and thiobarbituric acid method. Expression of NF-?B of hUVECs was analyzed by immunohistochemistry. PMN adhesion to hUVECs was measured by rose Bengal staining. RESULTS: ①Compared to the control group, the content of MDA remarkably increased in hypoxia/reoxygenation group (P

Objective To investigate clinical effect and safety difference of vinorelbine and docetaxel sepa-rately combined with lobaplatin in treatment of recurrent and metastatic breast cancer.Methods 160 patients with recurrent and metastatic breast cancer were chosen from July 2009 to July 2012 in our hospital,and they were random-ly divided into two groups,including A group (80 patients)with vinorelbine and B group (80 patients)with docetaxel on the basis of lobaplatin.The clinical efficacy for short -term,survival rate with follow -up and side effects incidence of both groups were compared.Results The RR and DCR of A group were 51.25%,68.75%,which of B group were 55.00%,71.25%.There was no significant difference in the clinical efficacy for short -term between the two groups (χ2 =1.04,2.37,all P >0.05).The survival rates in 1,2 and 3 years after treatment of A group were 60.00%,53.75%,28.75%,those of B group were 67.50%,57.50%,31.25%.There was no significant difference in the survival rate with follow -up between the two groups (χ2 =2.14,3.01,1.87,all P >0.05).The incidence rate of drug side effects of B group was significantly lower than A group(χ2 =13.14,9.33,15.74,11.65,8.29,all P <0.05).Conclusion Vinorelbine and docetaxel separately combined with lobaplatin in treatment of recurrent and metastatic breast cancer can efficiently control the disease progress and prolong the survival time;but docetaxel com-bined with lobaplatin treatment is helpful to reduce the risk of serious side effects.

BACKGROUND:Currently, vertebral compression fractures are the most common osteoporotic fracture in postmenopausal women;however, incidence of refracture has aroused increasing attention due to a lack of standard treatment. OBJECTIVE:To evaluate whether vertebroplasty combined with anti-osteoporosis treatment can reduce refracture rate fol owing osteoporotic vertebral compressive fractures. METHODS:Eighty-nine patients with osteoporotic vertebral compressive fractures undergoing vertebroplasty were divided into control group (n=38) and treatment group (n=51) after making an informed choice about treatment. Chest/lumbar X-ray and bone mineral density determinations were performed through outpatient or inpatient fol ow-up. The spinal stability, bone mineral density and refracture rate of patients in both groups were fol owed up. RESULTS AND CONCLUSION:Seventy-eight patients achieved complete fol ow-up (ranged from 6-39 months, average 26.73 months). There was no significant difference in the spinal stability between both groups (P>0.05), while rare bone trabecula was found in the control group. There was a significant difference in bone mineral density between both groups at postoperative 12, 24, and 36 months (P<0.05). The refracture rate in the treatment group was significantly lower than that in the control group (P<0.05). Our results indicate that anti-osteoporosis treatment can effectively reduce the incidence of refracture after vertebroplasty in patients with osteoporotic vertebral compressive fractures, and this study found satisfactory short-and medium-term clinical outcomes.

BACKGROUND:To grasp the optimal multiplicity of infection (MOI) and the time when stronger fluorescence intensities produce can lay the foundation for tracing observation of human bone marrow mesenchymal stem celsin vivo in animal models. OBJECTIVE:To investigate the feasibility of HIV-1 lentivirus carrying enhanced red fluorescent protein to transfect human bone marrow mesenchymal stem cels. METHODS:Human bone marrow mesenchymal stem cels at passage 4 were divided into blank group and MOI 2, 3, 4 groups. After that, the cels were seeded into 12-wel plates at a density of 5.0×105 , and cultured in 1 mL complete medium for adult bone marrow mesenchymal stem cels containing 1% fetal bovine serum. The infectious titer of lentivirus-carried enhanced red fluorescent protein was adjusted to 1.0×10 11 TU/L. Lentivirus solution 10, 15, 20 μL at MOI=2, 3, 4 were respectively added into the MOI 2, 3, 4 groups, and 10μL PBS was added into the blank group. At 24 and 72 hours after transfection, the expression of red fluorescence was observed under an inverted fluorescence microscope and the transfection efficiency was calculated. RESULTS AND CONCLUSION:Enhanced red fluorescent protein expressed stably in bone marrow mesenchymal stem cels. At 24 hours after transfection, red fluorescence could be seen under the inverted fluorescence microscope and achieved the peak at 72 hours after transfection. Within 21 days after transfection, there were no differences in the number of human bone marrow mesenchymal stem cels between the MOI 2, 3, 4 groups and blank group (P > 0.05). These results show that the HIV-1 lentivirus carrying enhanced red fluorescent protein is feasible to transfect human bone marrow mesenchymal stem cels, with the highest transfection efficiency when the MOI=4, which can express at least for 21 days and have no effects on the proliferative activity of labeled cels.

To investigate the effects of salvianolic acid B (SA-B) on cardiovascular endothelial cell function and platelet activation during myocardial ischemia-reperfusion in rabbits.

Objective To determine the influence factors for limb salvage of bone fracture patients with hyperpotassemia caused by Wenchuan earthquake,to discuss the clinical symptom and to improve the clinical treatment. Methods The clinical symptom, drug therapy, limb incision decompression, hemodialysis, and limb salvage of hyperpotassemia caused by earthquake were analyzed by logistic regression. Results All the 37 patients received drug therapy: 9 patients received incision and decompression singlely,8 received hemodialysis singlely,and the other 20 received decompression and hemodialysis simultaneously. The concentration of potassium decreased from (6.25 ± 0.91) mmol/L to (4.47±0.65) mmol/L,with significant difference (P＜0.05).Five patients with Gustilo III grade open injury received amputation at the concentration of potassium of (6.13±(0.78)) mmol/L, while the concentration of potassium for the other 32 patients was (6.25±0.31) (mmol/L). There was no significant difference between them(P>0.05). Logistic regression analysis found the time of compression, the time before incision and decompression, and the time before hemodialysis were the main factors to affect limb salvage. The OR value of these factors was 4.394, 3.793 and 5.432;while the P value was 0.013, 0.047, and 0.015, respectively. Conclusion Decreasing the time of compression, appropriate incision and decompression, and hemodialysis help improve the result of limb salvage in hyperpotassemia patients with bone fracture caused by earthquake.

Objective To investigate the graduate students' mental pressure after the full im-plementation of the charging system and explore effective countermeasures of alleviating the psycho-logical pressure. Methods 413 full-time graduate students of Grade 2014 were randomly selected in a university of Shandong province. The graduate students' psychological pressure scale and self-designed questionnaire survey were used. The data were analyzed using SPSS 17.0 software, statistical descrip-tion of the survey data, independent sample t test, ANOVA. Results ①The psychological pressure of full-time graduate students at their own expense was in themedium pressure level; ②The economic pressure and academic pressure of the male graduate students were higher than those of the female graduate students (P=0.000,P=0.042), the rural economic pressures were greater than urban students graduate students graduate students (P=0.000); Professional graduate economic pressures were greater than academic graduate students (P=0.027);There is difference in the pressure of interpersonal commu-nication among different majors (P=0.016); ③78.75% (315/400) of the graduate students tuition fees, living expenses were mainly from their parents and the national and school awards; ④The percentage of those who completely agreed with the following view: full charge than at public expense is more advantageous to graduate education, comprehensive charge is advantageous to the education career development and comprehensive charge embodies the fairness of education was 84.75% (339/400), 71.25% (285/400) and 68.00% (272/400). Conclusion The full-time graduate students at their own expense have a more rational understanding of the charging policy; economic and academic pressures are the two outstanding pressure sources of the graduate students at the present stage. Graduate should improve their ability to cope with stress, and government and schools should take various measures to help students relieve stress.