Objective To investigate the changes of plasma bone morphogenetic protein-4 (BMP-4) levels in patients with coronary heart disease (CHD) and rosuvastatin intervention effect on BMP-4 level.Methods Fifty-two patients with CHD and 35 health people were enrolled in this study as CHD group and control group.ELISA method was used to detect the concentration of plasma BMP-4.Analyzed the relationship between plasma BMP-4 and blood lipids,flow-mediated dilation (FMD),nitric oxide (NO),cyclooxygenase-2 (COX-2),malondialdehyde (MDA) and superoxide dismutase (SOD).And observed the changing of plasma BMP-4 before and after rosuvastatin intervention.Results Plasma BMP-4 level in CHD patients was (7.53 ± 1.20) μg/L,higher than that of control group ((3.81 ± 0.79) μ g/L,t =3.541,P =0.006).After rosuvastatin treatment,plasma BMP-4 level in CHD patient was decreased from (7.53 ± 1.20) μg/L to (5.40± 0.98) μg/L (t =1.436,P =0.001).Plasma BMP-4 level was positively correlated with COX-2,MDA,low-density lipoprotein cholesterol,total cholesterol (r =0.395,0.350,0.274,0.288 respectively,P ＜ 0.01 or P ＜0.05).But,it was negatively correlated with NO,high-density lipoprotein cholesterol,SOD,FMD (r =-0.291,-0.253,-0.476,-0.320 respectively,P ＜0.01 or P ＜0.05).COX-2,SOD and FMD were independent risk factors of plasma BMP-4 in patients with CHD.Conclusion Oxidative stress and endothelial dysfunction are in patients with CHD.Rosuvastatin treatment can remarkably reduce plasma BMP-4 level,alleviate vascular endothelium injury induced by oxidative stress and improve endothelial function in patients with CHD.

Long tracheal lesions are mainly caused by stenosis, infection, trauma, malignant tumors and other factors. Resection of the diseased tissue or stenosis and end-to-end anastomosis is currently the gold standard for long tracheal lesions treatment. However, these treatment programs have proven to have major limitations. In recent years, tissue engineering technology has been regarded as a promising medical alternative treatment method, and the selection of scaffold materials is one of key parts. With the continuous exploration of domestic and foreign researchers, biological materials have been continuously developed and applied to the research of tissue engineering trachea. Tissue engineering degradable scaffold materials can be divided into natural polymer material scaffolds and synthetic polymer scaffolds according to the different sources. The scaffold material can be modified or compounded as needed to improve the biological properties of scaffolds. In addition, with the continuous development of biological printing technology, different scaffold materials can be better combined and used. Biodegradable scaffolds have become a new research direction in the field of tissue engineering trachea due to their polymer properties, and have good application prospects.

Objective To elucidate the changes of the peripheral blood B cells in acquired immunodeficiency syndrome (AIDS) patients after the initiation of the highly active antiretroviral therapy (HAART ) ,and to investigate the effect of B cell count on the curative effect of HARRT .Methods Fifty‐three cases of AIDS outpatients and 26 healthy controls were collected between April 2011 and December 2014 . CD4+ T and B lymphocytes counts were compared between the two groups before HAART treatment ,3 ,6 and 12 months after the treatment .The correlation between ΔCD4+ T cells andΔB cells (i .e .the difference value of CD4+ T cells and B cells before HAART treatment and after 12‐month treatment , respectively ) were analyzed . According to whether the CD4+ T lymphocyte count increased by 100/μL after 1 year of the first HAART ,patients were divided into treatment response and nonresponse groups .B cell counts were compared between the two groups ,and the most suitable B cell count to initiate HAART was identified by mean of receiver operating characteristic (ROC) curve .Pre‐and post‐treatment results were compared by paired samples t test .Comparison of measurement data between multiple groups were analyzed by one‐way ANOVA analysis .Correlation between the two groups were analyzed by Pearson correlation analysis .Results B cell counts of AIDS patients before treatment ,3 ,6 and 12 months after treatment were (115 .0 ± 41 .0)/μL ,(130 .3 ± 54 .1)/μL ,(154 .2 ± 68 .1)/μL and (193 .9 ± 84 .0)/μL ,respectively ,while the B cell count of healthy controls was (299 .4 ± 125 .1)/μL . Significant differences among the five groups were observed (F= 24 .8 ,P< 0 .01) .Increases of the B lymphocyte counts with varying degrees were observed after treatments ,which were slow in the initial 3 months and faster afterwards .ΔCD4+ T cell was positively correlated with ΔB cell (r= 0 .493 , P<0 .05) .The B cell counts before treatment in the treatment response and nonresponse groups were (130 .6 ± 40 .4)/μL and (87 .2 ± 24 .5)/μL ,respectively ,which was significantly different (t=4 .77 ,P<0 .05) .The area under the ROC curve was 0 .848 .If the B cell count before treatment was 99 .5/μL ,the sensitivity and specificity to predict effective treatment were 82 .4% and 84 .2% , respectively . Conclusions B cell counts increase with varying degrees during HAART .B cell count before treatment can predict the therapeutic effect of HAART .

Objective To observe the effect of ritodrine hydrochloride on peripheral blood and tocolysis rate of patients with threatened premature labor.Methods89 cases of patients with threatened premature labor were selected from October 2015 to September 2016 and randomly divided into two groups, research group with 45 cases treated with ritodrine hydrochloride and control group with 44 cases treated with epsom salt.The peripheral blood, extinction time of uterine contraction, extended days of pregnancy, postpartum hemorrhage, neonatal birth weight and tocolysis rate were compared between two groups.ResultsAfter treatment, CRH, NO, PGE2 and IL-8 of control group were obviously higher than research group, the difference was statistically significant (t=10.826,3.839,7.534,8.075,P<0.05).The extinction time of uterine contraction in control group was obviously longer than research group, while extended days of pregnancy and neonatal birth days in research group were obviously longer than control group, the difference was statistically significant (t=4.566,7.855,3.237,P<0.05).There was no significant difference in postpartum hemorrhage between two groups (t=0.889,P>0.05).The overall efficacy of tocolysis in control group was 70.5%, while that in research group was 86.7%, which was obviously higher than the control group, the difference was statistically significant (χ2=7.801,P<0.05).ConclusionRitodrine hydrochloride can effectively control uterine contraction factor in peripheral blood and extend gestational days of patients with threatened premature labor, so as to improve tocolysis rate and birth quality.

OBJECTIVE To investigate the pathogenic causes of community acquired pneumonia(CAP) in the elderly and to guide experience antibiotic therapy.METHODS An etiological study was performed on 204 elder patients with CAP in the Cadres Medical Department of Beijing Shijitan Hospital from May 2005 to Apr 2008.The count scores were by CURB-65 scoring system.RESULTS Pathogens were identified in 204 patients: there were Mycoplasma pneumoniae(42,20.6%),Streptococcus pneumoniae(30,14.7%),Haemophilus influenzae(24,11.8%),Chlamydia pneumoniae(17,8.3%),Klebsiella pneumoniae(14,6.9%),Escherichia coli(7,3.4%),Pseudomonas aeruginosa(5,2.5%),Staphylococcus aureus(4,2.0%),Legionella pneumophila(2,1.0%),and Acinetobacter baumannii(1,0.5%).The score,by CURB-65 scoring system,of mixed infected patients was higher than single infections.CONCLUSIONS Atypical pathogens have important role in elderly CAP,the most common pathogenare Gram-negative bacilli,S.aureusand fungi.Mixed infection couldn′t be ignored.

Antheraea pernyi nucleopolyhedrovirus (ApNPV) PstI-B and C fragments were cloned and sequenced. ApNPV PstI-B was 7406 bp long, contained seven open reading frames (orfs)/genes, including p87, he65, pnk/pnl, odv-ec43 and Orgyia pseudotsugata multicapsid nucleopolyhedrovirus (OpMNPV) orf107,orf108 homologue on either strands of genomic DNA. ApNPV PstI-C was 6663 bp long, contained eleven orfs/genes, including pk-1, orf1629, polh, lef-2, ptp-2, ctl-1, ptp-1 and OpMNPV orf5, orf7, orf8, orf1 1 homologue on either strands of genomic DNA. Among the eighteen baculovirus genes identification, he65 and orf1629 were two diverse genes, while polh and lef-2 were two conserved genes. ApNPV was the third baculovirus found to contain pnk/pnl gene, the fourth baculovirus found to contain both ptp-1 and ptp-2 gene.

Objective To explore the relationship between PIAS3 expression and the degree of malignancy of meningiomas.Methods 72 cases of different degree of malignant meningioma and 13 cases of surgical specimens of normal brain tissue were extracted the total RNA,and detected the levels of PIAS3 in different degree of meningioma and normal brain tissue through comparative control study by using real-time fluorescence quantitative PCR.Results PIAS3 was low expressed in normal brain tissue,however,high expressed in the human brain meningioma with significant differences(P＜0.01).There were also significant differences found in expression level of PIAS3 between meningiomas grade I and Ⅱ,or Ⅲ level(P＜0.05),but the differences between meningiomas grade Ⅱ and Ⅲ were not obvious(P＞0.05).And PIAS3 expression was not related with the depth of infiltration in invasive meningiomas(P＞0.05).Conclusion PIAS3 was overexpression in meningiomas,and was be closely related to the occurrence and development of meningiomas.

Objective To design leaf patterns for Multileaf Collimator(MLC)routine quality assurance(OA)with a 2D diode array.Methods According to the detector distribution characteristic of the 2D diode array and basillg on the"picket fence"pattern,design the"stepwise"pattern.For each diode involving MLC QA,a calibration curve of relative output versus leaf positioning error was measured through delivering a set of patterns with different intentionally introduced positioning errors.When this proposed technique was delivered,the referenced patterns were exposed,and the calibration curves were used as a mean to quantitative determination of the leaf possible positioning errors through the detector readings.Results Compared with the"picket fence"pattern,the"stepwise"pattern not only had a high detecting efficiency,but also increased the dosimetric sensidvity to leaf positioning error.A 1 mm Ieaf positioni.error corresponds to a dose variation of 25% for the"stepwise"pattern,while for the"picket fence"pattern the same positioning error just causes a 17% dose vailation.Conclusions The new"stepwise"pattern is more efficient to be carried out,and more sensitive to sub-millimeter changes of leaf positioning.

Objective To investigate the efficacy of laparoscopic radical resection for colorectal cancer. Methods From September 2000 to December 2004, 99 patients with colorectal cancer underwent laparoscopic radical resection (laparoscopic group) and 198 patients with colorectal cancer underwent open radical resection (open group) at the Union Hospital of Fujian Medical University. The differences in local recurrence and survival between the two groups were compared. The local recurrence of tumors and survival of patients in the two groups were calculated by the life-table method, and were compared by the Wilcoxon (Gehan) test, chi-square test and Fisher's exact test. The recurrence interval and survival time of the two groups were compared by non-parametric Wilcoxon rank sum test. Results The 2-and 3-year local recurrence rates in the laparoscopic group were both 3.0% and the overall local recurrence rate was 3.0% (3/99). The 2-and 3-year local recurrence rates in the open group were 2.6% and 4.0% , respectively, and the overall local recurrence rate was 3.5% (7/198), with no significant difference between the two groups (χ2 =0.002, P > 0. 05). The median survival time of patients with local recurrence was 15 months (range, 7-24 months) in the laparoscopic group and 11 months (range, 2-28 months) in the open group, with no significant difference between the groups (U = 15. 500, P >0. 05). The 1-year survival rate was 33.3% in the laparoscopic group and 42.9% in the open group. The 2-year survival rate was zero in the laparoscopic group and 42. 9% in the open group. There were no significant differences between the groups for the 1-and 2-year survival rates (χ2 =0.120, P>0.05). Conclusions The efficacy of laparoscopic radical resection for colorectal cancer is similar to that of open surgery. Laparoscopic radical resection for colorectal cancer is safe and feasible, and does not increase the recurrence rate of cancer.