2-(Dimethylamino)ethyl methacrylate and sodium monochloroacetate were employed to synthesize [2-(Methacryloyloxy)ethyl] dimethyl ammonium acetate (CBMA) functional monomer.CBMA was grafted on the surface of silica by surface initiated atom transfer radical polymerization (SI-ATRP) to obtain silica-CBMA hydrophilic interaction stationary phase.Three silica-CBMA stationary phases with different grafted density of CBMA monomer were synthesized in SI-ATRP progress by changing the concentration of CBMA under the same conditions.The ability to separate organic acid compounds of the synthesized silica-CBMA stationary phases was evaluated under different conditions, including effects of pH value, salt concentration and content of water of mobile phase on retention of solutes.The results showed that the stationary phases could effectively separate organic acid compounds in HILIC mode, which followed a mixed mode of chromatography of ion exchange and hydrophilic interaction.The retention of solutes decreased with the increases of salt concentration of mobile phase, which consistent with the characteristics of ion exchange;the pH value of mobile phase had significant influence on ionization of the stationary phase and solutes, i.e., the retention of solutes increased as the increasing of pH value of mobile phase.However, the retention of solutes decreased with the increasing of the content of water in mobile phase, which was the typical characteristic of HILIC.The method of hydrophilic interaction chromatography combined with silica-CBMA stationary phases could conveniently determinate the content of vitamin C and rutin in rutin tablets, providing a new method for the separation and determination of strong polar samples.

Innate lymphoid cell is a type of newly discovered innate immune cell , which can function as adaptive T cells . Based on the transcription factors and the expression of effector cytokines , innate lymphoid cells can be categorized into three sub-groups:ILC1, ILC2 and ILC3.The inflammatory factors these produced by ILC play an important role in the development of inflamma -tory bowel disease (IBD), but ILC3 can secrete IL-22, which promotes the restoration of intestinal epithelial cells .Exploring the func-tion of ILC has a great significance in the treatments of IBD .This article reviews their phenotype , function and also relationship with IBD.

Objective To survey the major host animal and media fleas of plague in Beipanjiang Basin,to gain insights into plague foci and to provide a basis for prevention and control of plague.Methods According to the epidemiological site survey methods,from 2008 to 2010 five villages in five townships (towns) in coastal watershed of Beipanjiang were selected.The methods of cage trapping and 5 meters thread clamp were used to capture rodents indoor and outdoor,respectively.After rats were anesthetized with ether anesthesia,rat body flea were combed and stored in sterile tubes.The liver and spleen of rodents were collected and stored in the test tube with preservation solution,and free body fleas on rats were collected with flea sticky paper and stored in sterile tubes.Blood specimens (5 ml) of indicating animal and normal people were collected,serum was separated and sent for laboratory test.The four-step method was utilized to isolate Yersinia pestis from rodents and fleas,the indirect hemagglutination (IHA) was used to test F1 antibodies on the blood of rodents filter,blood serum of humans and rodents.Results Totally 243 rodents were captured,202 indoor and 41 outdoor,the capture rate was 4.90％ and 1.15％,respectively.Rodents captured belong to 9 species,4 genera,1 family and 1 order,Rattus flavipectus and Mus pahari were dominant species.Five rodents had body flea,the dyed flea rate was 2.06％;53 fleas were captured,total flea index was 0.218 1.Rat fleas were classified in 2 families,2 genera and 2 species,and Cheopis was the dominant species.Yersinia pestis and plague F1 were not detected.Conclusion The epidemic indication has not been found in Beipanjiang Basin,but the nurturing conditions for Rattus flavipectus plague foci along the coast are exist.

Objective To search for the method used in enriching caffeates in Cirsium setosum by macroporous adsorption resin, 23 types of macroporous adsorption resin were optimized, which could provide the industrial production of caffeates with the theory basis. Methods The adsorption and elution ratios, product purity and yield, as total indices, were comprehensively evaluatued by 23 types of macroporous adsorption resin in enriching the extracts in C. setosum. Results The product purity and yield of caffeates by the HPD-100 type macroporous adsorption resin were the highest and up to 52.2% and 87.6%. Conclusion The HPD-100 type macroporous adsorption resin shows better comprehensive adsorption property. It is available for the enrichment of caffeates in C. setosum.

Objective To analyze the practicality of current diagnostic criteria of invasive fungal infection (IFI) in patients with hematologic diseases/malignant tumors,so as to enhance the recognition of characteristics of pulmonary IFI after allogeneic hematopoietic stem cell transplantation (allo-HSCT).Methods The clinical features of 51 cases with IFI after allo-HSCT were analyzed retrospectively.Results Pulmonary IFI accounted for 42.1％ (51/121) of the whole infectious pneumonia diagnosed among the patients admitted during the study.One (2.0％) case was proven diagnosis ; 24 (47.1％) were probable diagnosis and 26(51.0％) were possible diagnosis.The using of immuno-suppressors and corticosteroids,and the presence of graft-versus-host disease (GVHD) were the main host factors.The patients with two or more host factors simultaneously accounted for 66.7％ (34/51) of all pulmonary IFI patients.Totally 94.1％ (48/51) of the patients with pulmonary IFI presented nodules and/or patches as the main features in high resolution computed tomography (HRCT) scanning.The positive rates of fungal antigen detection were 58.6％ for G test and 33.3％ for GM test,which were relatively high.Twenty patients (39.2％) showed decrease of arterial partial pressure of oxygen and hypoxia in blood-gas analysis.Conclusions For the diagnosis of pulmonary IFI post allo-HSCT,the administration of immuno-suppressors and corticosteroids,and the presence of GVHD were the main host factors.Nodules and/or patches were the main features in HRCT image.Fungus antigen detection is the main tool to support clinical diagnosis.

Objective To investigate the status of the plague natural focus and assess the risk of plague in regions with large scale engineering construction project,in order to provide a basis for plague prevention and control.Methods The survey was carried out in 14 regions with large scale engineering construction project of 40 counties in Guizhou Province in 2000-2011,2-3 towns were selected in each county and 2-3 villages in each town,the plague hosts and flea vectors in the residential houses and outdoors were investigated,the sera of 5 animals were collected in each village.The capture rate of hosts and flea index were calculated.Then the samples were cultured and serological tested for plague.Results The density of rodents was 1.14％-3.87％ in the reservoir region' residential building of hydro power station (Tianshengqiao,Pingban,Silin,Guangzhao,Sanbanxi,Dongqing,Qianzhong,Shatuo) and Xingyi airport,and Rattus flavipestus was the dominant species.The density of rodents was 0.00％-0.84％ in the reservoir region of hydro power station (Hongjiadu,Yingzidu,Goupitan,Longtan) and Jinyang district; the total flea index in Yinzidu,Pingban,Longtan reservoir regions of hydro power stations were 3.16,2.00,1.06,3.47 and 1.99,respectively.A total of 21 rodent and flea samples from Tianshengqiao hydro power station were tested positive for F1 antigen of the plague.Three strains of Yersiniapestis were isolated.Nine rat filter paper blood samples and 7 sera of indicative animals were tested plague F1 antibody positive.Other regions with large scale engineering construction project were tested negative.Conclusions The reservoir region of Tianshengqiao hydro power station is endemic areas of the plague,where belong to high risk areas.The density of Rattus flavipestus is higher than the controlling standard of the country in the reservoir region of hydro power station (Pingban,Silin,Guangzhao,Sanbanxi,Dongqing,Qianzhong,Shatuo),where belong to potential risk areas.The plague prevention and monitoring should be continually strengthened to reduce the risk of plague.

[Objective] To explore the application of Da Vinci robot in laparoscopic pyeloplasty treatment for pediatric hydronephrosis and to improve the effect of operation and shorten the operation time effectively.[Methods] A summary and analysis was performed on the intraoperative cooperation about the clinical data of 14 pediatric hydronephrosis cases (16 sides) whom were performed RALP from November 2015 to July 2016.The intraoperative cooperation includes preoperative education,adequate preparation of surgical instruments,ensuring the normal operation of robot system before surgery and also,the proper body positions,the protection for patients,the establishment of aseptic barrier during operation as well as the maintenance of robot after operation.[Results] All procedures were performed via transperitoneal approach.Docking time was shortened from 40 to 20 min,operation time lasted (115± 38) min.One severe case presented with anastomasis stenosis even after PCN dilatation,and was redid dismembered pyeloplasty half a year later and the ultimate result was good.The other cases recovered well and the overall success rate was 93.75％.There were no robot failure caused by improper cooperation and no complications caused by improper nursing among the 14 pediatric hydronephrosis cases (16 sides) in pediatric hydronephrosis operations.[Conclusion]Da Vinci robot performed well in assisting laparoscopic pyeloplasty treatment for pediatric hydronephrosis,for it leaves light surgical trauma and short duration of operation.Adequate preoperative preparation,medical staff's formal professional technical training and professional cooperation team can not only improve the operation efficiency,but also be the key to the success of the operation.

In order to evaluate the effect of mitofusin-2 gene (mfn2) on proliferation and chemotherapy sensitivity of human breast carcinoma cell line MCF-7 in vitro, pEGFPmfn2 plasmid carrying full length of mitofusin-2 gene was transfected, by using sofast, into MCF-7 cells. Mitofusin-2 gene expression in MCF-7 cells transfected by sofast after 48 h was detected by PCR and Western blotting, and the stable expression of GFP protein in MCF-7 cells by Western blot analysis. The proliferation of MCF-7 cells was assayed by MTT and cell counting. By using PI method, the effects of mfn2 on the cell cycle distribution of MCF-7 were measured. Annexin-V/PI double labeling method was employed to detect the changes in apoptosis induced by chemotherapeutics before and after transfection. The results showed that the MCF-7 cells transfected with mfn2 gene could stably and highly express GFP protein. MTT assay revealed that after transfection of mfn2 cDNA, the proliferation of MCF-7 cells was significantly inhibited. DNA histogram showed that cells arrested in S phase, and the percentage of S phase cells was 42.7, 17.2 and 19.6 in mfn2 cDNA transfection group, blank plasmid transfection group and blank control group, respectively (P<0.05). The apoptosis ratio of the cells transfected with mfn2 gene was increased from 3.56% to 15.95%, that of the cells treated with camptothecin (CAMP) followed by mfn2 gene transfection was 69.6%, and that in blank plasmid transfection group and blank control group was 31.0% and 23.4% respectively (P<0.05). It was suggested that transfection of mfn2 gene could significantly inhibit the proliferation of MCF-7 cells and promote their sensitivity to CAMP with a synergic effect.
Antineoplastic Agents, Phytogenic/pharmacology ; Apoptosis ; Camptothecin/pharmacology ; Cell Cycle ; Cell Line, Tumor ; Cell Proliferation ; Drug Screening Assays, Antitumor ; Flow Cytometry ; Gene Expression Regulation, Neoplastic ; Green Fluorescent Proteins/metabolism ; Membrane Proteins/*biosynthesis ; Membrane Proteins/*genetics ; Mitochondrial Proteins/*biosynthesis ; Mitochondrial Proteins/*genetics ; Transfection

OBJECTIVE To investigate the aminoglycoside modifying enzymes genes of multi-drug resistant Acinetobacter baumannii(MDR-ABA).METHODS The four kinds aminoglycoside modifying enzymes genes(aac(6′)-Ⅰad,aac(6′)-Ⅰb,aac(3)-Ⅰ,ant(3″)-Ⅰ) of 20 strains MDR-ABA were detected by PCR.RESULTS Among 20 MDR-ABA strains,12 strains of aac(3)-Ⅰ,15 strains of aac(6′)-Ⅰb,18 strains of ant(3″)-Ⅰwere positive,and aac(6′)-Ⅰad was negative.The new subtype aac(6′)-Ⅰad gene has not been found.CONCLUSIONS Twenty strains MDR-ABA aminoglycoside modifying enzymes genes are found in all the 20 MDR-ABA strains.The genotype is in accordance with antibiotics resistance.It can induce clone transmitting hospital infection.It is first time to study the aac(6′)-Ⅰad gene of A.baumannii in China.

Objective To master the prevalence of plague and its trend in Guizhou Province,and to analyze the plague monitoring results from 2000 to 2012.Methods The report of infectious disease,the information of plague natural focus and the epizootic monitoring data of Xingyi City,Anlong County and Dingxiao Distract of Guizhou Province from 2000 to 2012 were collected and the status of the plague natural focus was analyzed.Results There were 137 cases of gland plague in Xingyi City and Arlong county from 2000-2003,1 death,and mt plague occurred in 66 villages.Fifty-four strains of Yersiniapestis were detected and 49 rats were plague antigen F1 positive(49/160).No human plague occurred between 2004-2012.A total of 4 plague antigen F1 positive rats were detected in Dingxiao District and Xingyi City in 2005 and 2006.There was no Yersinia pestis and F1 antibody in 2007-2012.The epidemic stage of plague was from 2000-2003; the active stage was from 2004-2006; and the quiescent stage was from 2007-2012.The dominant species of the plague natural focus was Rattus flavipestus (42.83％,7 966/18 597),but was replaced by Rattus norvegicus at the epidemic stage (47.22％,1 480/3 134) and the active stage(35.35％,2 071/5 196).The density of rodents was 5.34％ at the epidemic stage,which was higher than that of the active stage (3.27％) and the quiescent stage (1.71％,x2 =2 286.15,P ＜ 0.01).Xenopsylla cheopis(56.34％,10 034/17 811) was the dominant species,and the index was 1.537 9,which was greater than those of the active stage(0.959 6) and the quiescent stage(0.540 4,x2 =492.68,P ＜ 0.01).Conclusions The plague of Guizhou Province is at the quiescent stage.Both the density of rodents and the Xenopsylla cheopis index are lower than the national standard of controlling.