Objective To establish two PCR assays to rapidly and simultaneously detect U.parvum and U.urealyticum.Methods Two PCR assays were established through designing two sets of specific primer targeting urease gene B of U.parvum and U.urealyticum,respectively.The standard strains of U.parvum and U.urealyticum and the clinical samples were detected by these PCR assays and PCR products of the standard strains and two clinical specimens were directly sequenced and carried out specific and sensitive assays.Forty-eight clinical specimens were tested for culture and the PCR assays and tow methods were compared.Results The standard strains of U.parvum,U.urealyticum and the clinical specimens were successfully and differentially detected by the PCR assays and the sequencing results were found to have a complete similarity to the GenBank sequences.The 14 strains of other bacterial genera including 5 strains that produced urease were not amplified by these PCR assays.Each assay had a detection limit of 10 copies/?l of plasmid DNA.The positive rate in 48 clinical specimens by PCR(54.2%)was higher than that by culture(39.6%)(P

Objective To conduct a bibliometric analysis of pediatric literature in recent 5 years in Pubmed database,and to explore the focus issues of pediatrics.Methods Bibliographies from research literature of pediatrics in PubMed database from 2012 through 2016 were retrieved.The publication years,journals,the prolific authors and frequency of Mesh major topics were counted.MeSH heading/subheading matrix were formed.SPSS 19.0 statistical software was applied for clustering analysis.Results A total of 9375 articles were included.There were 45 MeSH heading/subheadings,which were clustered into 4 categories.Conclusion The research focuses in pediatrics are as follows:the clinical competence training and education research;the related pediatric issues from the perspective of social medicine;medical error prevention and the related legislation;the situation of Chinese pediatricians and doctor-patient relationship.

Objective To study the genetic effects of lead on root tip cell of Vicia faba. Methods Micronucleus tests were conducted on root tip cell of Vicia faba treated with Pb2+ of concentrations of 0.1, 1.0, 5.0, 25.0, 50.0 mg/L for 12-36 h. Results The results indicated that the rates of micronucleus of lead-treated tip cell were significantly higher than that of the control (P

Objective To observe the effects of physical agents therapy on serum hs-CRP, TNF-α andadiponectin in patients with cerebral infarction and the possible underlying mechanisms. Methods Sixty patientswith cerebral infarction were randomly and equally divided into two groups: 30 cases were treated with physical a-gents therapy ( physical therapy group) , and 30 with drugs only ( drug treated group). Thirty normal subjectsserved as the control group. The level of hs-CRP in the serum was determined by latex agglutination reaction, TNF-and adiponectin were determined by using ELISA before and after therapy. Results The levels of serum hs-CRP and TNF-α of patients with cerebral infarction before therapy were much higher than those of the control group,but adiponectin was significantly lower than those of the control group( P < 0.01 ). After therapy, the levels of ser-um hs-CRP and TNF-α were decreased and adiponectin was increased significantly in both treated groups ( P <0.01 ). Comparison with two treated groups showed that the levels of hs-CRP and TNF-α were lower and adiponec-tin was obviously higher in physical agents therapy group than those in the drug treated group ( P < 0.05 ). Con-clusion The patients with cerebral infarction have low level of serum adiponectin. Physical therapy might exertbeneficial effects on patients with cerebral infarction by the decreasing serum hs-CRP and TNF-α, as well as by ele-vating adiponectin.

Objective To compare the diagnostic efficiency of superb microvascular imaging (SMI) and contrast-enhanced ultrasonographic microvascular imaging (MVI) for differentiating breast lesions.Methods One hundred and sixteen patients with 116 breast lesions were first examined by grayscale ultrasound.Then SMI and MVI were performed on all patients.Microvascular architectures of breast lesions were depicted by both methods.The lesions were evaluated based on their microvascular architectures.The diagnostic efficacy of both methods were compared.Results The diagnostic sensitivity,specificity,and accuracy of SMI and MVI were 79.24％,90.48 ％,85.35％ and 88.68％,87.30％,87.93％,respectively.The areas under the curve of SMI and MVI were 0.888 and 0.926.The diagnostic values of SMI and MVI were not statistically different (P =0.212).Conclusions SMI can detect tiny vessels and depict microvascular architecture of breast lesions as MVI do,which is beneficial for breast tumor differentiation.The diagnostic efficacy of SMI is almost the same as MVI.

Objective To compare the blood-saving effect when acute hypervolemic hemodilution (AHH) was performed with hydroxyethyl starch (HES) 130/0.4 dissolved in electrolyte injection (HES-E) and HES 130/0.4 in sodium chloride injection (HES-NaCl).Methods Thirty patients of both sexes,aged 18-60 yr,of American Society of Anesthesiologists physical status Ⅰ or Ⅱ,with body mass index of 18-25 kg/m2,hemoglobin (Hb) ＞100 g/L,hematocrit (Hct) ＞ 35％,scheduled for elective abdominal operations under general anesthesia,were randomly divided into HES-E group and HES-NaCl group using a random number table,with 15 patients in each group.AHH was performed after induction of anesthesia.In HES-E and HES-NaCl groups,HES-E and HES-NaCl 15 ml/kg were intravenously infused over 30 min,respectively,and the infusion was conpleted before skin incision.Immediately after onset of AHH (T1),at 2 h after the end of AHH (T2),and at the end of operation (T3),arterial blood samples were collected for blood gas analysis and blood routine test,and pH value,base excess,HCO3-,K+,Na+,Cl-,Ca2+,Hb and Hct were recorded.Venous blood samples were collected at T1 and T2 for measurement of blood coagulation parameters including prothrombin time,activated partial thromboplastin time and fibrinogen and thrombelastography parameters.The volume of liquid intake and output and requirement for allogeneic blood transfusion were recorded,and the blood volume expansion rate was calculated.Results Compared with group HES-NaCl,no significant changes were found in the total volume of liquid infused,requirement for allogeneic blood transfusion,blood volume expansion rate,blood coagulation parameters at each time point,Hb and Hct (P＞0.05),pH value,base excess,HCO3 and K+ were significantly increased,and Na+ and Cl-were significantly decreased in group HES-E (P＜0.01).Conclusion There is no significant difference in the blood-saving effect between AHH with HES-E and HES-NaCl clinically,but HES-E can maintain homeostasis better.

Objective To investigate the effect and the mechanism of the GITR-antibody(glucocorticoid-induced tumor necrosis factor receptor-ligand antibody) on the mouse leukemia model induced by L615.Methods The mouse leukemia models induced by L615 cells were divided into 4 groups: negative controls(peritoneal injection of normal saline,0.2 ml/d),GITR group(GITR,100,infused through caudal vein 2 d before leukemic lymphocytes inoculation,again at dose of 50 ?g/each mouse after inoculation),Cyclophosphamide group(200 mg?kg~(-1)?d~(-1),intraperitoneal injection from the 3~(rd) day after inoculation for 3 d),GITR+ Cyclophosphamide group(100 mg?kg~(-1)?d~(-1) Cyclophosphamide instead).The survival time,leukocyte counting in the peripheal blood,liver and spleen index were calculated and the pathological examination of liver,spleen were performed.Results GITR-ligand could prolong the survival time of mouse leukemia model,lead the necrosis and apoptosis of leukemic cells in bone marrow,decrease the liver and spleen index,decrease and relieve the leukocyte increase of peripheal blood and the irregular swelling of liver and spleen.Conclusion Through immunoregulation,GITR-antibody can inhibit the L615 leukemic cells effectively,therefore inhibit the progress of leukemia to some extent.

Objective To explore how the antibody of glucocorticoid-induced tumor necrosis factor receptor (GITR) exerts inhibitory effect on the L615 leukemia cells by strengthening the activation of the NK cells. Methods The 24 established L615 leukemia mice were equally and randomly divided into 4 experimental groups according to different drugs given intraperitoneally, groupⅠ (normal saline), Ⅱ (GITR), Ⅲ (cyclophosphamide), and Ⅳ (GITR +cyclophosphamide).Then the NK cells were extracted from the spleen of mice as effective cells, and L615 leukemia cells served as the target cells. The changes of the NK cells’killing activation was observed in vivo. The mRNA levels of 3 proteins tightly related to the NK cells’activation Perforin, IFN-? and Fas mRNAs were detected with RT-PCR. Results The GITR-antibody enhanced the killing activity of the NK cells obviously, with the expressions of the 3 proteins increasing obviously. Conclusion By regulation of the Treg cells, the GITR-antibody can inhibit the L615 leukemia cells through enhancing the NK cells' killing activity.

Antitumor effects of erythromycin and the related mechanism were investigated in the present study. Neuroblastoma cells (SH-SY5Y) were exposed to erythromycin at different concentrations for different durations. Cell proliferation was measured by cell counting, and cell viability was examined by MTT assay. Cell cycle phase distribution and the cytosolic calcium level were detected by flow cytometry. Mitochondrial membrane potential was measured by the JC-1 probe staining and fluorescent microscopy. The expression of an oncogene (c-Myc) and a tumor suppressor [p21 (WAF1/Cip1)] proteins was analyzed by using Western blotting. Erythromycin could inhibit the proliferation of SH-SY5Y cells in a concentration- and time-dependent manner. The cell cycle was arrested at S phase. Mitochondrial membrane potential collapsed and the cytosolic calcium was overloaded in SH-SY5Y cells when treated with erythromycin. The expression of c-Myc protein was down-regulated, while that of p21 (WAF1/Cip1) protein was up-regulated. It was concluded that erythromycin could restrain the proliferation of SH-SY5Y cells. The antitumor mechanism of erythromycin might involve regulating the expression of c-Myc and p21 (WAF1/Cip1) proteins.

Objective: To explore the impact of ticagrelor on platelet aggregation in patients with acute coronary syndrome (ACS) after percutaneous coronary intervention(PCI). Methods: A total of 98 ACS patients received PCI in our hospital from 2015-01 to 2015-12 were enrolled. The patients were randomly divided into 2 groups: Clopidogrel group, the patients received oral clopidogrel 300mg at first time and then maintained by 75mg/qd, n=48 and Ticagrelor group, the patients received oral ticagrelor 180mg at first time and then maintained by 90mg/bid, n=50. All patients were treated for 12 months.The level of vasodilator stimulated phosphoprotein (VASP) phosphorylation and platelet reactivity index (PRI) at pre-medication and 24h, 7 days and 1 month after PCI were detected; major adverse cardiovascular events (MACE) and bleeding events were recorded within 1 month after PCI, the incidence of platelet aggregation, MACE and bleeding events were compared between 2 groups.Results: The baseline information and PCI condition were similar between 2 groups, P>0.05. The overall average PRI was different between 2 groups, P<0.001 and PRI at each time point was different between 2 groups, P<0.001, different group and time point had interactive effect on PRI, P<0.001. Compared with Clopidogrel group, Ticagrelor group had the lower ratio of PRI≥50% at different time points after PCI, P<0.001. The incidence of MACE and bleeding event were similar between 2 groups within 1 month after PCI, P>0.05. Conclusion: Ticagrelor was superior toclopidogrel for anti-platelet aggregation in ACS patients after PCI, it didn't increase bleeding events.