Objective To establish mice modle of allergic rhinitis(AR) and to study the role of Staphylococcal enterotoxin B(SEB) and ovalbumin(OVA) in the modle.Methods Forty Balb/c mice were evenly randomized into OVA group,SEB group,OVA+SEB group and normal sodium group and AR modle was established.The symptom scores,total serum IgE concentration,IL-4 concentration were analyzed by factorial design.Meanwhile,the morphology change of nasal mucosa was observed.Results The symptom scores in OVA group,SEB group,OVA+SEB group and normal sodium group were 6.80?1.03,0.90?0.99,0.70?0.82,0.60?0.70 respectirely.The interaction of OVA and SEB had statistical significance(P

OBJECTIVE To establish mice model of allergic rhinitis(AR) and study the role of Staphylococcal enterotoxin B(SEB)and ovalbumin(OVA)in the model,and investigate the change of regulatory T cell(Treg)in the nasal mucosa of mice.METHODS Forty Balb/c mice were randomized into OVA group(A),SEB group(B),OVA+SEB group(C)and normal solution group(D).AR model was established.The symptom scores and count of Foxp3 positive cells in nasal mucosa were analyzed by factorial design.RESULTS The symptom scores in Group A,B,C,D were 0.90?0.99,0.70?0.82,6.80?1.03,0.60?0.70 respectively.Group C was successfully established as AR model.OVA and SEB had interaction(P

Uterine natural killer cells (uNK) are distinct from peripheral blood NK (pbNK) cells,which constitute up to 70％ of the decidual leukocyte population in the first half of pregnancy,and are considered to have a cytokine-secreting role rather than cytotoxic function.It plays an important role in trophoblast invasion and uterine spiral artery remodeling.As a result of imbalance of uNK cells,pathological pregnancy appeared.Herein,the origin of uNK cells and its function in pregnancy were veviewed.

Objective　To study the effect on the proliferation of vascular smooth muscle cells(VSMC) after transferring angiotensin Ⅱ(AngⅡ) type 2 receptor(AT2R) gene.Methods　The recombinant adenoviral vector AdcCMV-AT2R, containing rat AT2 receptor gene which was constracted by homologous recombination, was used to transfer AT2 receptor gene to rat VSMC in vitro. The expression of AT2R mRNA was detected by RT-PCR. The rate of expression and the change of cell cycle in VSMC were analysed by flow cytometry. Cell devision index, incorporation of bromodeoxyuridine(BrdU)and 3-(4,5-dimethyl-thiazol-2-yl)2,5-diphenytetrazolium bromide(MTT) were used to determine the proliferation of VSMC, respectively.Results　RT-PCR showed that the expression of AT2R mRNA increased obviously in transferred VSMC, and the peak value of expression rate was about 89.51% at 48 hours. When the expression of AT2R was at peak value, the ratio of S and G2-M periods was reduced from 31.7% to 13.9%(P<0.05) and the index of cell division from 37.4% to 9.6%(P<0.01). The OD values of MTT and BrdU incorporation were reduced by 61.4% and 51.6% respectively(P<0.01).Conclusion　Our study indicates that AdCMV-AT2R can generate high level expression of AT2 receptor in cultured rat VSMC and its expression can significantly inhibit the proliferation of rats VSMC in vitro. It may be a new selection for the gene therapy of restenosis after angioplasty.

Objective To evaluate the changes of left atrial(LA)function in peripartum cardiomyopathy(PPCM)patients using two?dimensional speckle tracking echocardiography(2DSTE). Methods Totally 35 PPCM patients and 35 healthy postpartum women(control group)were en?rolled in this study. Left ventricular end?diastolic diameter(LVEDd)and LA anteroposterior dimension(LAAD)were measured. The end?diastol?ic volume(EDV)and end?systolic volume(ESV)were obtained using biplane modified Simpson′s method. Cardiac output(CO)and left ventricu?lar ejection fraction(LVEF)were also calculated. E wave and A wave of mitral valve were measured,and correspondingly E/A ratio were obtained. LA longitudinal systolic strain(SS),systolic strain rate(s?SR),early diastolic strain rate(e?SR),and late diastolic strain rate(a?SR)were ob?tained by 2DSTE. Results There was no statistical difference of E wave between the two groups(P>0.05). Compared to the normal control group, LVEDd,EDV,ESV,LAAD,E/A were increased,while CO,LVEF,A,SS,s?SR,e?SR,a?SR were decreased in the PPCM group(P<0.05). a?SR was positively correlated with A wave in patients with PPCM(r=0.775,P=0.001). Conclusion LA reservoir,conduit and booster pump func?tion were decreased during PPCM. 2DSTE can easily and accurately assess these changes of LA function.

As the rapid development of economy necessitates a large number of oil, the contradiction between energy supply and demand is further exacerbated by the dwindling reserves of petroleum resource. Therefore, the research of the renewable cellulosic biomass resources is gaining unprecedented momentum. Because xylose is the second most abundant monosaccharide after glucose in lignocellulose hydrolyzes, high-efficiency bioconversion of xylose becomes one of the vital factors that affect the industrial prospects of lignocellulose application. According to the research progresses in recent years, this review summarized the advances in bioconversion of xylose, which included identification and redesign of the xylose metabolic pathway, engineering the xylose transport pathway and bio-based chemicals production. In order to solve the energy crisis and environmental pollution issues, the development of advanced bio-fuel technology, especially engineering the microbe able to metabolize xylose and produce ethanol by synthetic biology, is environmentally benign and sustainable.
Bacteria ; genetics ; metabolism ; Escherichia coli ; genetics ; metabolism ; Ethanol ; metabolism ; Fermentation ; Fungi ; genetics ; metabolism ; Industrial Microbiology ; methods ; Metabolic Engineering ; Metabolic Networks and Pathways ; genetics ; Saccharomyces cerevisiae ; genetics ; metabolism ; Xylose ; metabolism

Objective To provide reference of the general physiological index, blood physiology and biochemistry for middle and old-aged cynomolgus monkey.Methods 119 cynomolgus monkey aged from 11~16 (80 were males and 39 were females) were involved in the study.We detected the general physiological index( body weight, the crown-rump length and waist circumference ) , hematology and blood biochemistry parameters respectively and compared these parameters between males and females.Results Between males and females, there were significant differences in Body weight, the crown-rump length and Waist circumference of the general physiological index(P <0.01),NEUT#、LYMPH#、EO#、BASO#、NEUT%、LYMPH%、EO%、BASO%、MCV、MCH、RDW-CV、PCT、MONO%、HGB、HCT、MCHC、RDW-SD、MPV of hematology(P <0.01 or P <0.05)and TBIL、ALB、GLO、A/G、ALP、GLU、UREA、CREA、TCH、TG、CK、ALT、GGT of blood biochemistry ( P <0.01 or P <0.05 ) .There were no significant differences in other parameters ( P >0.05).Conclusion It provides reference of general physiological index, blood physiology and biochemistry parameters of cynomolgus monkey and basis for their application in biomedical domain.

OBJECTIVE To investigate the prevention and nursing of diabetic foot which is one of diabetic complications.METHODS To analyze and summarize the data of twenty six patients with diabetic foot.RESULTS Twenty dermal ulcer patients recovered,6 mummification necrosis patients improved at some extents.CONCLUSIONS It is very important to strengthen the education of diabetic knowledge and the correct nursing of diabetic foot for the prevention and development of diabetic foot.

AIM: To establish the determination method of chlorogenic acid and baicalin in Ganmaozhike Granules (Flos Lonicerae,Radix Scutellariae,etc.). METHODS : The contents of chlorogenic acid and baicalin in Ganmaozhike Granules were determined by HPLC. RESULTS : The linear velation was good. The average recovery of chlorogenic acid was 101.9%,RSD was 1.12%;The average recovery of baicalin was 99.2%,RSD was 1.31%. CONCLUSION : The method is simple,accurate and with a good reproducibility and can be used for the quality control of the granules.

Objective Based on dual channel melting curve analysis-based assay,we developed a method to rapidly detect the drug-resistant mutations in Mycobacterium tuberculosis through real-time PCR.Methods According to the common first-line drug-resistant mutations of Mycobacterium tuberculosis,we designed six dual-labeled fluorescence probes to rapidly detect the drug-resistant mutations through realtime PCR melting curve after amplifications of drug-resistant related gene region of DNA.The targets include rpoB 81 bp core region,katG315,inhA promoter,ahpC promoter and embB306.To validate the sensitivity and specificity of our method,we performed real-time PCR assays to detect drug-resistant mutations in 76 clinical MDR-TB samples,which were collected by Shanghai CDC in 2008.Results In the validation,this method successfully detected drug-resistant mutations in all 76 clinical MDR-TB samples.The △Tm of mutations were from 1.8 to 14.4 ℃.Comparing with the sequencing data,all mutations covered by the six probes were detected with 100％ sensitivity and 100％ specificity (rpoB,80/80; inhA,7/7 ; katG315,59/ 59;ahpC,8/8;embB306,27/27).This method can successfully detect drug-resistant mutations from 100 copies/μl DNA samples.Conclusions A widely applicable real-time PCR assay to detect first line drug-resistant mutations of Mycobacterium tuberculosis has benn developed.This method has proven to have the advantages of high sensitivity,specificity and low risk of contamination.It can be used in rapid diagnosis of clinical drug-resistant tuberculosis and the evaluation of laboratory drug sensitivity test.