It is well known that pulmonary hypertension(PH) is one severe complication of bron-chopulmonary dysplasia( BPD) that is associated with high mortality. Aberrant pulmonary vascular growth, abnormal vasoreactivity and pulmonary vascular remodeling may ultimately lead to PH. Symptoms of PH of-ten overlap those of BPD itself. Furthermore,the emergence of symptoms may indicate that the disease has already progressed to a late, less reversible phase, thereby supporting arguments for screening all infants at risk. Echocardiography is non-invasive and widely available,and is currently the most commonly used screen-ing modality for PH in infants with BPD. Because the incidence of associated cardiovascular anomalies is high,cardiac catheterization and CT scanning of the chest should be considered in all infants who have signifi-cant PH despite optimal management of their lung disease. Early diagnosis and aggressive specific drug thera-py can improve the outcome for these patients.

Persistent pulmonary hypertension of newborn (PPHN) is a clinical syndrome,characterized by pulmonary arterial pressure elevated relative to systemic blood pressure,leading to extrapulmonary right-to-left shunting of blood across the ductus arteriosus and foramen ovale,causing severe hypoxemia.Pulmonary vascular remodeling is pathognomonic of hypoxia-induced PPHN.The regulatory mechanism and cell composition of vascular wall were dysfunction,which led to vascular wall thickened.The review focus on three aspects,such as endothelial cells,smooth muscle cells,and adventitial cells,described the relation and the possible mechanisms between hypoxia-induced PPHN and pulmonary vascular remodeling.

To investigate the effect of casein phosphopeptide-amorphic calcium phosphate(CPP-ACP) on the growth of Lactobacillus fermentum and to evaluate the possibility of CPP-ACP as a biological anticariogenic agent. Lactobacillus fermentum was inoculated in BHI with different concentrations of CPP-ACP and grew in anaerobic condition at 37 ℃ for 48 h. Used MTT method to evaluate the effects of CPP-ACP on the growth of Lactobacillus fermentum. CPP-ACP inhibited the growth of Lactobacillus fermentum effectively. With the concentration of CPP-ACP increasing, the values of A(550 nm) decreased. It was found that CPP-ACP had inhibitory effect on the growth of Lactobacillus fermentum, the inhibitory effect increased with CPP-ACP concentration.

By employing the methods of literature research and specialist consultation,comprehensively and systematically collected case history at home and abroad on Chinese and western medicine in the treatment of AIDS,by distilling the etiopathogenisis and pathogenesis,the character,the clinical stage,TCM four methods of examination,di erentiation of symptoms,the therapeutical principle and method and the e ective prescription,etc,the paper clari ed the character,pathology,etiology and pathogenesis of AIDS by the evaluation and statistic of qualitative and quantitative analysis of evidence based medicine,grasped the present situation of the treatment of AIDS with Chinese and western medicine in the treatment of AIDS,the rule of syndrome di erentiation and the facticity and application of the clinical e cacy.All these are used to the TCM handbook of AIDS diagnosis and treatment.

0.05). The cells on Ti1 and Ti2 were attached well till confluent.Conclusion:The neotype titanium alloys are biocompatible.

Objective To investigate the relationship between air pollutant exposure and preterm delivery (PTD) by Logistic regression model, as the effect of air pollutant exposure to PTD made great concern today. Methods The present study consisted of 31 145 qualified birth cases, 80.09% of the total amount, from 1 Nov, 2005 to 1 Aug, 2007. The covariant items included maternal age, nation, education, residence, income, occupation, occupation exposure, parent-drinking, father-smoking, heating-type, folic acid supplement, season of pregnancy, prenatal health care, etc. The Logistic regression analysis was employed to control the confounding factors mentioned above, then the pollutant was introduced step by step to build the single, double and triple pollutant Logistic regression model to examine the association between three pollutants (SO2, NO2, and PM10) and PTD during the first and third trimesters of pregnancy. The air monitoring data (daily average of SO2, NO2, and PM10) were collected from Taiyuan Environmental Monitoring Station. Results In the first trimester, a quartile increase of NO2 exposure caused the risk for PTD increased by 22.7%. As for the effect of PM10, no significant differences were seen. In the third trimester, a quartile increase of NO2 exposure caused the risk for PTD increased by 19.1%. Conclusion The NO2 exposure during the pregnancy can increase the risk of PTD. The susceptible exposure-window choice is critical for the further study in this field.

Objective Exploring different strengthening immune strategy on long-term immune memory effects for tuberculosis vaccine lays the theoretical foundation.Methods The fusion protein AMM,adjuvant DDA and BCG-PSN mixed built AMM subunit vaccine.Choose only 50 C57BL/6 mice (SPF),according to the table of random number method was divided into 5 groups and each group 10 only,the experiment 1 group injected mice to phosphate buffer solution (PBS) as control; Experiment 2 mice only injected BCG vaccine (BCG) from early; Experiment 3 mice BCG initial free,in 10 weeks with AMM subunit vaccine strengthen immunity; The four mice from early after BCG,respectively on 8 weeks,10 weeks with AMM subunit vaccine strengthen immune mice one time.Experimental 5 groups of mice after BCG initial free,respectively on 6 weeks,8 weeks,10 weeks with AMM subunit vaccine strengthen immune mice a.28 weeks to remove spleen lymphocytes in mice,add 2.5μg/ml Ag85B stimulus 72 h after collecting spleen cell culture supernatant,with ELISA test Ag85B specificity splenic lymphocyte caused IFN ppar-gamma level.Results Spleen cells by antigen Ag85B stimulation,BCG initial free,AMM subunit vaccine strengthen immune once,twice,three times group and PBS compared all had difference (P ＜0.01 orP ＜0.05) ;BCG initial free-AMM subunit vaccine strengthen immune once,twice,three times group and BCG compared all had difference (P ＜0.01 or P ＜0.05) ; BCG initial free-AMM subunit vaccine strengthen immune once and twice or three times group compared with difference (P ＜0.01 orP ＜0.05) ; Initial free-AMM subunit vaccine strengthen immune two group and three times than group difference was statistically significant (P ＞0.05).Conclusion Mice strong immune strengthened the number is not the more the better,the appropriate number of strengthen the immune to induce the most lasting immunity memory,subunit vaccine strengthen immunization strategy may affect the immune memory is one of the important factors.

ObjectiveTo measure p27 protein expression in nodular goiter and study the relationship between p27 protein expression and clinicpathologic factors.MethodsImmunohistochemical method-SP was used to detect expression of p27 protein in 42 cases of nodular goiter, 32 cases of normal thyroid tissues and 30 cases of thyroid cancer.ResultsThe positive expression rate of p27 protein was 52%?29% in nodular goiter, 87%?7 2% in normal thyroid tissue and 14%?12% in thyroid cancer. p27 protein expression in different thyroid tissues was significantly different (R 1,2=576, R 1,3=1?998, R 2,3=1?422, P

Objective To understand the pathogenic characteristics of intra-abdominal infection after appendecto-my in patients with appendicitis.Methods Clinical data of patients undergoing appendectomy in a hospital from January 2013 to December 2015 were analyzed retrospectively,pathogenic characteristics,treatment,and prognosis of patients with intra-abdominal infection were analyzed.Results A total of 431 patients undergoing appendectomy were investigated,38 (8.82%)developed intra-abdominal infection.36 strains of pathogenic bacteria were isolated, 34 (94.44%)of which were gram-negative bacteria,mainly Escherichiacoli(n=29,80.55%);2 (5.56%)strains were gram-positive bacteria,1 of which was Staphylococcusaureus,and the other was Enterococcusavium.The re-sistance rates of 29 strains of Escherichia coli to commonly used antimicrobial agents (amoxicillin,piperacillin,ti-carcillin,cefuroxime,ceftazidime,and cefalotin)were 72.41%-93.10%,none of strains were found to be resistant to piperacillin/tazobactam,meropenem,imipenem,and amikacin.Conclusion Escherichiacoli is the most common pathogen causing intra-abdominal infection after appendectomy and it has high resistance rates to most commonly used antimicrobial agents,piperacillin/tazobactam,amikacin,and carbapenems are recommended for treating intra-abdominal infection after appendectomy.

OBJECTIVE To explore urinary tract infection.METHODS Totally 750 clinical isolates of urinary tract infection were collected from patients who were cured in our hospital from 2001 to 2003,then analyzed the kinds of these bacterials and sensitive rate to antibiotics.RESULTS The percentage of Gram-negative bacilli was 53.60%,in which Escherichia coli was 38.13%;The percentage of Gram-positive cocci was 35.20%,in which Enterococcus were 16.53%;the percentage of fungi was 11.20%.The resistance rate of Escherichia coli to ampicillin,amoxicillin/clavulanic acid,quinolones,nalidixic acid and SXT was 80.54%,57.69%,45.00-71.00%, 71.23% and 65.14%,respectively,and the resistance rate to amikacin was lower than to gentamicin(5.82% vs 39.11%,P