Objective] Summarize the pathogenesis of asthma and leukotriene receptor in latest research situation. [Methods]Check out the past five years CNKI, VIP data, PUBMED data to leukotrienes and asthma for keyword research literature, and classification, summary. [Results]Numerous clinical studies, in vivo and in vitro experiments showed that leukotrienes and their receptors are involved in the pathogenesis of asthma and progress in a multi-cell, multi-session, and interact with a variety of cytokines.[Conclusion]With concept of wholism as the characteristics of the Genomics technologies, more suitable as a primary means of application in the field of medical research has an overall concept for the regulation of traditional Chinese medicine research in the field of drugs to treat asthma leukotriene pathway and provide a new perspective.

Objective To evaluate the relationship between fragile fracture sites in hospitalized geriatric and nutritional status.Methods On the basis of whether the fracture,293 cases were divided into fracture group(n =140)and normal control group(n =153),51 males(36.4%)and 89 females(63.6%)in 140 fracture patients. Results The age was (74.04 ±8.58)years in the fracture group,that in the normal control group was (74.77 ± 8.14)years,there was statistically significant difference between the two groups(t =-0.743,P >0.05).The femoral neck fracture was 51 cases(36.4%)and intertrochantetic fracture was 57 cases(40.7%),and other was 32 cases (22.8%).The patients were divided into the two groups according to the age:60 ~75 years group(n =62)and >75 years group(n =78),femoral neck fracture was 37.2%,and intertrochantetic fracture was 52.6% in the group that more than 75 years old,which were 35.5% and 25.8%,respectively in 60 ~75 years group,there was statistically significant difference between the two groups(χ2 =18.337,P <0.01).The hemoglobin,serum albumin weight,weight,BMI in the fracture group were (117.44 ±20.25)g/L,(34.96 ±4.95)g/L,(60.81 ±10.63)kg,(22.83 ±3.54)kg/m2 , and those in the normal control group were (136.99 ±17.10)g/L,(37.27 ±5.85 )g/L,(64.47 ±11.23)kg, (24.24 ±3.88)kg/m2 respectively.The commonly used nutritional indicators:hemoglobin(t =-8.908),serum albu-min(t =-3.619),weight(t =-2.837)and BMI(t =-3.218)were lower than the normal control group(all P <0.01 ),serum phosphate was lower than the normal control group,the difference was statistically singnificant (t =-2.047,P <0.05).The blood calcium(t =0.630)and ALP(t =-0.550)had no statistically singnificant differences between the two groups(all P >0.05).Conclusion The proportion of intertrochantetic fracture and femo-ral neck fracture were higher in hospitalized elderly patients,and malnutrition,such as lower hemoglobin,lower serum albumin,lower weight,and lower BMI were,important factors in the fragile fracture in the geriatric inpatients.

[Objective] To study the relationship between arthrochalasis and developmental dislocation of hip(DDH).[Methods]One hundred and seventy-six patients with DDH treated from Jaunary 2006 to December 2006 in the Shengjing Hospital of China Medical University were evaluated retrospectively.The average age was 3.54 years old(range,from 6 months to 15 years),with 153 females and 23 males.Eighty-four patients had both,58 left and 34 right.Totally 192 normal children were controls,and the average age was 3.67 years old(range,from 4 months to 15 years).The diagnosis of DDH was depended on clinical manifestations,radiography and ultrasonography.The criteria of arthrochalasia were the standards proposed by Wynne Davies.SPSS version 10.0 for Windows was used to perform statistical analysis.?2 test and spearman test was conducted for obtained data.A P

Objective: To determine the distribution of CD4~+CD25~+FOXP3~+regulatory T cells (Treg) and Treg subsets in human colorectal carcinoma microenvironment and to explore their correlation with conventional clinico-pathological features.Methods: Frozen sections and Immunohistochemistry (IHC) were used to detect FOXP3~+ Treg in flesh specimen collected from 42 patients with colorectal carcinoma.The number of FOXP3~+ Treg was evaluated in terms of its association with clinico-pathological feature in tumor and peri-cancer tissue.Double staining was performed to determine the expression of ICOS and FOXP~3.Results:The number of FOXP3~+ Treg in the colorectal carcinoma (mean 24.1) was significantly higher than that in peri-cancer tissue (mean 0.7).A higher number of tumor infiltrating FOXP3~+ Tregs was found in the patient groups with poor differentiation,lymphatic metastasis and non-distant metastasis as compared to the patient groups with well differentiation,non-lymphatic metastasis and distant metastasis.The percentage of FOXP3~+ ICOS~+ Treg was higher in colorectal carcinoma(81% ) than that in peri-cancer tissue(10% ).Condusion: Increased FOXP3~+ Treg may influence the occurrence and development of colorectal carcinoma.Our data support the hypothesis that tumor infiltrating FOXP3~+ Tregs attenuate the immune response against cancer and suggest that strategy to overcome FOXP3~+ Treg function may be beneficial in the treatment of human colorectal cancer.

Objective:To determine the distribution of CD4+CD25+FOXP3+ regulatory T cells (Treg) and Treg subsets in human colorectal carcinoma microenvironment and to explore their correlation with conventional clinico-pathological features.Methods:Frozen sections and Immunohistochemistry (IHC) were used to detect FOXP3+ Treg in fresh specimen collected from 42 patients with colorectal carcinoma.The number of FOXP3+ Treg was evaluated in terms of its association with clinico-pathological feature in tumor and peri-cancer tissue.Double staining was performed to determine the expression of ICOS and FOXP3.Results:The number of FOXP3+ Treg in the colorectal carcinoma (mean 24.1) was significantly higher than that in peri-cancer tissue (mean 0.7).A higher number of tumor infiltrating FOXP3+ Tregs was found in the patient groups with poor differentiation,lymphatic metastasis and non-distant metastasis as compared to the patient groups with well differentiation,non-lymphatic metastasis and distant metastasis.The percentage of FOXP3+ ICOS+ Treg was higher in colorectal carcinoma(81%) than that in peri-cancer tissue(10%).Conclusion:Increased FOXP3+ Treg may influence the occurrence and development of colorectal carcinoma.Our data support the hypothesis that tumor infiltrating FOXP3+ Tregs attenuate the immune response against cancer and suggest that strategy to overcome FOXP3+ Treg function may be beneficial in the treatment of human colorectal cancer.

[Objective] This study examined the distribution and the expression of platelet-derived growth factor-A (PDGF-A) in the ligamentum teres of children with developmental dislocation of the hip (DDH) and normal persons in order to investigate the roles of PDGF-A in hip joint laxity. [Methods]There were six pairs of joint laxity of children with DDH and normal children (control group) matched to gender and age. Immunohistochemistry (SP method) method was used to detect the location and distribution of the PDGF-A in the ligamentum teres,and to semi-quantify their content.Semiquantitative RT-PCR method was used to detect the PDGF-A in the ligamentum teres at mRNA level. The quantitative analysis of the PDGF-A was performed by professional image software and the results were analyzed with standard statistical methods.[Results]High density expression was observed in the synovial layer with fibroblast regularly arranged parallel to the joint surface in the ligamentum teres. PDGF-A distribution was decreased in the fibrous layer of the ligamentum teres. There were significant differences in the percentage of positive fibroblast and gray-scale density in the fibrous layer between DDH group and control group (P

Objective To investigate the inhibitory effects of cationic polymeric liposomes (CPLs) vector-based RNA interference (RNAi) technology on the expression of rat MHCⅡ transactivator ( CⅡTA) and MHCⅡgenes .Methods According to the genetic information of CⅡTA downloaded from GenBank, three short hairpin RNA (shRNA) sequences targeting CⅡTA sequences were designed .CPLs vectors were constructed and coupled to shRNA plasmid vectors to form pCⅡTA-CPLs vectors .Six groups including control group , CPLs control group , pHK-CⅡTA control group and three pCⅡTA-CPLs groups were set up.Rat dendritic cells (DCs) were transfected in vitro.Real time PCR and flow cytometry analysis were used to detect the expression of CⅡTA and MHCⅡat mRNA and protein levels in DCs after transfec-tion.Results The pCⅡTA-CPLs vectors were successfully constructed .Compared with control groups ,the transcription level of CⅡTA and MHCⅡand the expression of MHCⅡat protein level were significantly in-hibited in all pCⅡ TA-CPLs groups ( P<0 .01 ) .The strongest inhibitory effects of pCⅡTA-CPLs on the ex-pression of CⅡTA and MHCⅡgenes were observed in the second pCⅡTA-CPLs group.There was a positive correlation between the expression of CⅡTA and MHCⅡ.Conclusion CPLs vectors were effective gene carriers.The constructed pCⅡTA-CPLs vectors significantly inhibited the in vitro expression of rat CⅡTA and MHCⅡ, which provided evidences for further investigation on pCPLs-CⅡTA vectors in vivo.

BACKGROUND:Intramedul ary nail fixation has more advantages in open fractures compared with the locking compression plate, such as the dual functions of lock and compression, highly protecting the blood supply in fracture end, less tissue trauma, firm elastic fixation and low infection rate. OBJECTIVE:To investigate the clinical efficacy and biomechanical properties of tibial intramedul ary nail and locking compression plate in treatment of open tibial fractures by stages. METHODS:Total y 100 patients with open tibial fractures who received treatment at the Department of Orthopedics, Jiaozhou Central Hospital of Qingdao Affiliated to Weifang Medical Col ege from January 2012 to January 2014 were enrol ed. Patients were divided into tibial intramedul ary nail group (n=57) and locking compression plate group (n=43) according to the surgical procedures using randomized control ed method. Ten corpses models of open tibial fractures provided by Jiaozhou Central Hospital of Qingdao Affiliated to Weifang Medical Col ege were selected, and then randomly divided into 2 groups. Three-point bending test, axial compression test and torsional strength test were conducted after the fixation with tibial intramedul ary nail and locking compression plate. RESULTS AND CONCLUSION:The operative time and per-operative blood loss of patients in the tibial intramedul ary nail group was significantly less than those in the locking compression plate group (P<0.05). There were no significant differences in wound infection, fixtures loosening, not healing and other complications after fixation between these two groups. There were no incision infection in these two groups. The specimens bending test offset, axial compression experiments offset and torsion test torsion angle in tibial intramedul ary nail group were significantly less than those in the locking compression plate group (P<0.05). These results demonstrate that tibial intramedul ary nail and locking compression plate for treatment of open tibial fractures by stages can achieve the desired therapeutic effect, however, the biomechanics of tibial intramedul ary nail is more stable, and more in line with the biomechanical properties of human body, with the advantages of firm fixation, doing exercises in early stage and smal stress shielding. Choosing the appropriate materials according to patient’s symptoms and fracture location during treatment can improve the curative effect.

Objective:To evaluate the effects of increasing end-tidal concentrations of sevoflurane and increasing stimulation voltage on motor evoked potentials,so as to provide evidence in making anesthesia plan for intraspinal tumor surgery.Methods:In the study,48 patients scheduled to undergo intraspinal tumor surgery [American Society of Anesthesiology,(ASA)Ⅰ-Ⅱ,18-65 years old]were enrolled. After general anesthesia induction,the patients were assigned to receive sevoflurane anesthesia of increa-sing end-tidal concentration in the sequence of 0.0%,0.5%,1 .0% and 1 .5% respectively,under a background of propofol and remifentanil.All the observations were done before the important steps of sur-gery.Remifentanil infusion rate was 0.2 μg /(kg·min),while the propofol infusion rate was adjusted to maintain the bispectral index values within the range of 30-50.At each concentration,4 stimulation voltages of 300 V,400 V,500 V and 600 V were employed to elicit motor evoked potentials (MEPs). The amplitude and latency of each MEP were compared.The success ratio was also recorded.Results:The concentration of sevoflurane and the stimulation voltage had impacts on the amplitude and latency of MEPs.Under each stimulation voltage,the MEPs amplitude decreased following increasing end-tidal sevoflurane concentrations,and significant differences were found in comparing 1 .5% sevoflurane (left 20.50 μV,70.71 μV,135.97 μV,190.00μV ,right 14.29 μV,50.71 μV,73.10μV,77.50μV) with 0.0% sevoflurane (left 143.00 μV,388.10 μV,484.53 μV,500.00 μV,right 176.00 μV, 407.60 μV,384.35 μV,451.00 μV)and 0.5% sevoflurane (left 100.00 μV,362.57 μV,444.05μV,435.00 μV,right 115.00 μV,207.15 μV,258.34 μV,358.50 μV),left χ2 =27.46,P<0.01,right χ2 =60.49,P<0.01;left χ2 =20.73,P<0.01,right χ2 =55.05,P<0.01;left χ2 =34.25,P<0.01,right χ2 =33.58,P<0.01;left χ2 =28.61,P<0.01 ,right χ2 =49.04,P<0.01;while there were no statistical differences in the latency changes (P =0.26 ).Under each end-tidal sevoflurane concentration,the MEPs amplitude increased following increasing stimulation voltages,and significant differences were found in comparing 300 V (left 143.00 μV,100.00 μV,61.50 μV,20.50μV ,right 176.00 μV,115.00 μV,41.07 μV,14.29 μV)with 400 V (left 388.10 μV,362.57μV,198.81 μV,70.71 μV,right 407.60 μV,207.15 μV,89.00 μV,50.71 μV)and 500 V (left 484.53 μV,444.05 μV,216.24μV,135.97 μV,right 384.35 μV,258.34μV,187.50μV,73.10μV)and 600 V (left 500.00 μV,435.00 μV,344.00 μV,190.00 μV,right 451.00 μV,385.50μV,156.00μV,77.50μV),leftχ2 =45.55,P<0.01,rightχ2 =25.73,P<0.01;leftχ2 =46.67, P<0.01,right χ2 =55.30,P<0.01;left χ2 =47.36,P<0.01,right χ2 =47.82,P<0.01;left χ2 =38.67,P<0.01,right χ2 =45.87,P<0.01;while the latencies were decreased,and significant dif-ferences were found in comparing 300 V with 400 V and 500 V and 600V(left F=7.50,P=0.01 ,right F=13.33,P<0.01),but the differences had little clinical significance.The success ratio decreased by increasing end-tidal sevoflurane concentration,and significant differences were found in comparing 1 .5%sevoflurane (left 43.8%,70.8%,77.1%,81.3%,right 37.5%,60.4%,75.0%,66.7%)with 0.0%sevoflurane (left 79.2%,87.5%,95.8%,93.8%,right 75.0%,95.8%,95.8%,95.8%)and 0.5%sevoflurane (left 72.9%,89.6%,95.8%,95.8%,right 66.7%,89.6%,95.8%,97.9%);the suc-cess ratio increased by increasing stimulation voltage,and significant differences were found in comparing 300 V(left 79.2%,72.9%,62.5%,43.8%,right 75.0%,66.7%,60.4%,37.5%)with 400 V(left 87.5%,89.6%,77.1%,70.8% ,right 95.8%,89.6%,79.2%,60.4%)and 500 V(left 95.8%, 95 .8%,9 1 .7%,77 .1%,right 95 .8%,95 .8%,8 1 .3%,75 .0%)and 600 V (left 93 .8%,95 .8%, 89.6%,81.3%,right 95.8%,97.9%,89.6%,66.7%),but there were no statistical differences in the success ratio of MEPs between the group with stimulation voltage of 600 V ,end tidal sevoflurane concen-tration of 1 .5% and the group with stimulation voltage of 300 V,end tidal sevoflurane concentration of 0.0% (P=0.22).Conclusion:Sevoflurane inhibited MEPs in a dose-dependent manner.It can de-crease the amplitudes and prolong the latencies.But increasing stimulation voltage will facilitate MEPs monitoring and increase the success ratio.Sevoflurane can be used in larger parts of MEPs monitoring surgery by increasing the stimulation voltage.

Authors described the patterns,core measures and mechanisms of coordinated care delivery in the localities and analyzed initial outcomes of this practice.It is found that such practice has optimized distribution of regional healthcare resources,implemented first visit to primary institutions, and the care delivery to separate emergency from outpatient service.In addition,the paper analyzed problems found in localities in terms of policy,public hospitals and primary institutions,and proposed elements required for coordinated care delivery system to succeed,such as enhanced policy support, enhanced multi-departmental coordination,and public hospital reform to explore feasible approaches.