Objective To investigate the ability of the four-slice perfusion maps derived by multislice CT(MSCT)perfusion imaging (CTPI) to detect ischemic lesion in rabbit models with the middle cerebral artery occlusion(MCAO). Methods Sequential dynamic CT studies were performed at four slices in 2 control rabbits and another 8 with MCAO. The volume of critically ischemic lesions on CTPI maps at 1st,2nd and 3rd hour after operation and the volume of infarction measured by postmortem 2,3,5- triphenyltetrazolium chloride (TTC) staining were analyzed by analysis of variance with random blocks design and linear correlation. Results In 6 of 8 animals of the ischemia group, critically ischemia or infarction was visible on perfusion maps and TTC-staining,while appearing negative in 2 control rabbits. In four-slice CTPI maps, lesions were visualized in 2 of 4 slices at least. The results of analysis of variance demonstrated that the intergroup differences were discovered between 1st , 2nd and 3rd hour after operation, and between MTT map and other CTPI maps (P

Objective To give a summary of the current researches on hematopoietic stem cell niche.Methods Through extensive reviewing the related domestic and abroad literatures,the present summary reviews the compo- nents of hematopoietic stem cell niche,related cell factors and related cell signaling pathway participating in regula- tion of hematopoietic stem cell.Results The activities of hematopoietic stem cells are regulated by the niche(micro- environment),which is composed of hematopoietic stem cell and its surrounding cells.The regulation cannot be completed through one signaling pathway.Also,the self-renewal and differentiation of hematopoietic stem cell can- not be completed only through osteoblastic cells.Conclusion The niche regulates hematopoietic stem cells by differ- ent ways.With study in-depth,we will comprehensively understand the nature of stem cells and the study will pro- vide a broader space to stem cell-based therapy.

OBJECTIVETo discuss the curative effect of traditional treatment and combination therapy for senile hip fracture.

METHODSUsing prospective methods to choose 300 cases of elderly patients with hip fractures from February 2011 to December 2012, which were randomly divided into comprehensive treatment group and conventional treatment group. After screening, 148 case were in comprehensive treatment group,including 62 males and 86 females with an average age of (78.76 +/- 7.32) years old ranging from 60 to 88; 45 cases were intertrochanteric fracture of femur, 103 cases were fracture of neck of femur; Singh index > or = IV in 74 cases, < IV in 74 cases;preoperative Harris score was 39.90 +/- 2.28. There were 146 cases in conventional treatment group,including 60 males and 86 females with an average age of (80.00 +/- 7.06) years old ranging from 66 to 96; 50 cases were intertrochanteric fracture of femur, 96 cases were fracture of neck of femur; Singh index > or = IV in 75 cases, < IV in 71 cases; preoperative Harris score was 40.10 +/- 2.81. Preoperative general situation,leaving bed time and hospital stay, the incidence of postoperative 12 weeks Singh index > or = IV and DPD/Cr value, Harris score at 12 months after operation and the incidence of fracture again of two groups were observed and compared.

RESULTSIn comprehensive treatment group 140 patients were followed up for 12 to 18 months with an anverage of 14.80 +/- 1.85. In conventional treatment group 132 patients were followed up for 12 to 14 months with an average of 12.75 +/- 0.79. There were no significant differences in age, gender, the classification of fracture, preoperative Harris hip score, preoperative Singh index > or = IV level and DPD/Cr value between the two groups (P > 0.05). Comprehensive treatment group had shorter leaving bed time and hospital stay, smaller postoperative 12 weeks DPD/Cr value and higher postoperative Harris score, higher incidence of postoperative 12 weeks Singh index > or = IV level, lower incidence of fracture again than conventional treatment group, there was statistically significant difference between two groups (P < 0.05).

CONCLUSIONFor the anti-osteoporosis effect, the comprehensive treatment group has more advantage than traditional treatment group in elderly hip fracture, which can further improve the elderly hip fracture treatment and provide the reference of evidence-based medicine cooperate with rehabilitation department.

Aged ; Aged, 80 and over ; Case-Control Studies ; Female ; Hip Fractures ; surgery ; Humans ; Incidence ; Length of Stay ; Male ; Postoperative Complications ; epidemiology ; Prospective Studies

Objective To explore the effect of pre-hospital nursing intervention in the new regional cooperative rescue model on treatment delay and the therapeutic effect in patients with myocardial infarction.Methods From January 2012 to May 2014,158 patients with acute myocardial infraction (AMI) were selected.Patients were divided into two groups,intervention group and control group,The first medical contact to balloon(FMC-to-B) time,referral time,cardiac function were analysed.Results Mean FMC-to-B time [(94±21)min vs.(102±23) min],referral time in nursing intervention [(5±3) min vs.(9±4) min)] were significantly shorter than those in control group (t=2.14,6.67,P＜0.05).After a month compared with control group,LVEF was increased [(54.8±6.9)％ vs.(48.8±6.9)％],and LVED was deceased [(50.1±8.2) mm vs.(50.5±5.6)mm] in intervention group.Conclusions Pre-hospital nursing intervention can decrease the FMC-to-B time,which could improve the cardiac function.

Objective To compare the difficult degree,differences in gastric pouch volume,the complications,and postoperative weight loss effect of two gastric pouch practices in laparoscopic gastric bypass for bariatrics.Methods We retrospectively analyzed laparoscopic gastric bypass surgery in 76 bariatrics cases from May 2010 to May 2012.Two methods were used to create gastric pouch,among which 39 cases were operated with the dissection landmark method (called dissection),and 37 cases with bougie airbags 30 ml (called the bougie).Parameters were compared between the 2 groups including operation time for gastric pouch,the amount of staple cartridges,intraoperative complications,blood loss,and postoperative excess weight loss percentage (EWL ％),the postoperative bleeding,obstruction,fistula and other complications.Results All patients were followed up for more than one month.The dissection group used longer time in creating gastric pouch than that in the bougie group [(58 ± 27) min,(42 ±21) min,P ＜ 0.01].The number of staple cartridges used were significantly different between the two groups [(6.2 ±3.0),(4.3 ± 2.0),P ＜ 0.01].There were 10 cases of complications in the dissection group (26％),and 3 cases in the bougie group (8％) (P ＜0.05).One month after the surgery,one each patient had transient hematochezia.There was no gastric pouch-related complications in the two groups postoperation.There was no difference in excess weight loss (P ＞ 0.05).Conclusions The two methods can achieve the same effect on excess weight loss.The bougie method used less time in creating the gastric pouch,less consumable materials,and less complications occurred in creating gastric pouch.

Objective To evaluate the effects and safety of closed tracheal suction system(CTSS)versus open tracheal suction system (OTSS) for mechanically ventilated patients.Methods All randomized controlled trials (RCTs) comparing CTSS with OTSS for mechanically ventilated patients home and abroad were identified via manual and computer retrieval.All related data were extracted.Meta analysis was conducted using the statistical software RevMan 5.1 on the basis of strict quality evaluation with the methods recommended by the Cochrane Collaboration.Results Fifty-one related papers were found and 12 RCTs involving 1205 patients in CTSS group and 1179 patients in OTSS group were included.The results of meta analysis showed that CTSS was associated with a significant reduction in the duration of mechanical ventilation (WMD =-0.73,95％ CI-1.07--0.40,P＜0.0001),but the incidence of ventilator associated pneumonia and microbial colonization,mortality and length of ICU stay exhibited no difference between the two groups (P ＞ 0.05).However,compared with OTSS,CTSS reduced the incidence of arrhythmia (RR =0.23,95％ CI 0.07-0.74,P =0.01) and minimized the disturbance to heart rate (WMD =-1.97,95％ CI-3.03--0.91,P =0.0003),mean arterial pressure (WMD =-2.01,95％ CI-3.02--1.01,P ＜ 0.0001) and oxygen saturation (SpO2) (WMD =-1.00,95％ CI-1.14--0.86,P ＜ 0.000 01).Conclusions Compared with OTSS,CTSS could reduce disturbance to respiratory and circulatory system by sputum suction and shorten the duration of mechanical ventilation.However,CTSS has no advantage in prevention of ventilator associated pneumonia or microbial colonization,nor does it shorten the length of ICU stay or improve the outcome of mechanically ventilated patients.

Objective To assess the risks of complications of loop colostomy and loop ileostomy.Methods The databases of Medline,Embase,Cochrane Library,Google Scholar and Wanfang were retrieved to identify the published studies comparing the advantages between loop colostomy and loop ileostomy.All the articles retrieved were published before April 15,2011.The incidence of complications was analyzed by Meta-analysis.The data were analyzed by the Z test and the heterogeneity of the data was analyzed by the Q test.Results Five randomized controlled trials and 8 non-randomized controlled trials with 1752 cases were included in the Meta-analysis.Compared with loop ileostomy,loop colostomy was associated with significantly increased risk of stoma prolapse ( OR =3.46,95％ CI:1.81-6.63,P ＜ 0.05 ).There were no significant differences in the incidences of stoma hemorrhage and stenosis,wound infection,stoma necrosis,parastoma dermatitis and hernia between patients who received loop ileostomy and those who received loop colostomy.Compared with loop ileostomy,loop colostomy was associated with increased risk of wound infection following stoma closure(OR =3.44,95％ CI:1.95-6.05,P ＜0.05).Compared with loop colostomy,loop ileostomy was associated with increased risk of postoperative bowel obstruction following stoma closure(OR =0.43,95 ％ CI:0.20-0.91,P ＜ 0.05 ).There was no significant difference in the risk of anastomotic leak between loop ileostomy and loop colostomy.Conclusion Compared with loop ileostomy,loop colostomy is associated with increased risk of stoma prolapse and wound infection after stoma closure,while a higher risk of bowel obstruction following stoma closure is observed after loop ileostomy.

Objective To investigate the expression of the genes correlated with interferon induced genes virus (MX1, OAS1, IFI44) in the peripheral blood leukocytes of patients with systemic lupus erythematosus (SLE), and to evaluate the relationships between the expression levels of these genes and diseaseactivity. Methods The clinical data of 100 SLE patients, 40 non-SLE patients with rheumatic diseases, and 40 normal controls were collected. Peripheral blood samples were collected. Total RNA was extracted and transcribed into cDNA. SYBR green dye based real-time quantitative PCR method was used to compare the expression levels (indicated as △CT value) of MX1, OAS1 and IFI44 in patients with SLE and those in the controls. Comparisons between groups were performed with ANOVA and Spearman correlations. Results ①The △CT value of MX1, OAS1 and IFI44 expression level of the SLE patients (3.4±1.8, 4.2±1.5, 8.8±2.2)was significantly higher than those of the non-SLE patients (2.4±0.4, 3.4±0.7, 5.4±2.1 ) and normal controls (2.3±1.1, 2.6±0.7, 5.2±2.0). ② The △CT value of OAS1 and IFI44 expression level of the SLE patients in severe disease was significantly higher than those of the SLE patients in mild disease and the SLE patients with stable disease. ③The ACT value of OASI and IFI44 were correlated with the SLEDAI scores (r=0.038,0.380). ④ The △CT values of MX1, OAS1 and IFI44 expression level of the SLE patients with arthritis were significantly higher than those of SLE patients without arthritis. ⑤ The △CT value of IFI44 expression level of the SLE patients with lupus nephritis (3.2±2.1,2.2±1.1) was significantly higher than that of the SLE patients without lupus nephritis. ⑥ There was correlations among these genes in SLE patients (P＜0.05). Conclusion The value of MX1, OAS1 and FFF44 expression level of SLE patients is up-regulated. The real time expression levels of OAS1, IFI44 genes are associated with SLE disease activity and there are close correlation among these genes with interferon induce virus-relationed genes (MX1, OAS1, IFI44) in SLE patients.

OBJECTIVE:To evaluate the bactericidal activity of recombinant human platelet phospholipase A2(RHP-PLA2)in vitro against S.aureus and the effects of different impact factors on the bactericidal activity of it.METHODS:The bactericidal activity of RHP-PLA2 was tested by agar plating method,and the impact factors(pH,Ca2+,Mg2+,negatively charged heparin)were determined.RESULTS:The minimum bactericidal concentration(MBC)of RHP-PLA2 killing 99% S.aureus was 0.08 ng?L-1.The bactericidal rates of PLA2 at MBC were 44.4%,99.8% and 99.5% respectively in the pH of 5.0,7.4 and 9.0.1 ～5 mmol Ca2+ was suitable for the bactericidal activity of the RHP-PLA2.The bactericidal activity of RHP-PLA2 can be completely inhibited by 5.12 mmol?L-1 EGTA,10 mmol?L-1 MgCl2 or 0.30?10-4 IU?L-1 heparin.CONCLUSIONS:The bactericidal activity of RHP-PLA2 is affected by pH and Ca2+ concentration in media.The cationic property of PLA2 is the key factor influencing its bactericidal activity.

Objective To explore the characteristics of common parameters for acupuncture treatment of cancer pain by sorting out the domestic and foreign literature.Method This article collected and sorted out literature on acupuncture treatment of cancer pain in Chinese databases: Chongqing VIP, CNKI and Wanfang Data and English database PubMed. Main Chinese search keywords were针刺,电针,耳穴,针灸,癌痛,癌症and疼痛. English search keywords were acupuncture, electroacupuncture, auricular, cancer pain, neoplasms and pain. The search range was limited to literature collected in large databases since2010. The article type was limited to clinical case studies. Result s: Forty-four pieces of literature were retrieved after repeated literature was excluded. Conclusion s: Combined acupuncture and medicine and composite therapy are mainly selected for acupuncture treatment. Regularities in point selection for acupuncture are often acupuncture at pain points and acupoint selection according to primary diseases. Needle retention time is often between 20 and 30 min. Electroacupuncture stimulation waveforms aremainly sparse-dense waves, the stimulation intensity is as high as the patient can adapt and the treatment frequency is often once daily.