1.Study on Extraction Process of Kendir Leaves in Compound Kendir Leaves Tablets
Chinese Journal of Information on Traditional Chinese Medicine 2006;0(08):-
Objective To study the extraction process of kendir leaves in compound kendir leaves tablets. Method The optimum extraction process was selected by the orthogonal design L9(34),with the factors of the concentration of ethanol,the volume of ethanol and the time of extraction,the content of quercetin as the evaluating criteria detected by HPLC. Kromasil C18 column (250 mm?4.6 mm,5 ?m) was used. The mobile phase was acetonitrile-0.5% phosphoric acid (27︰73),detection wavelength was 371 nm,the flow rate was 1.0 mL/min,and the column temperature was 30 ℃. Results The best extraction process of kendir leaves was as follows:85% ethanol,30 times volume of ethanol,extracting for 2 hours in boiling water. Quercetin showed a good linearity in the range of 0.963 0~0.080 3 ?g,r =0.999 8 (n =7). The average recovery of quercetin was 99.46%. Conclusion The extraction process was entirely,and the results of determination are satisfactory.
2.Mechanism of azole resistance in the Candida albicans strains isolated from vulvovaginal candidiasis
Cui LI ; Yongqin WU ; Yisheng CHEN ; Jing GAO ; Chunmei YING
Chinese Journal of Infection and Chemotherapy 2017;17(4):397-403
Objective To investigate the resistance rates of the Candida albicans strains isolated from patients with vulvovaginal candidiasis to 5 antifungal agents and examine the mechanism of azole resistance in these strains.Methods A total of 1 646 C.albicans strains were collected in Obstetrics and Gynecology Hospital of Fudan University from January to December 2015.The resistance rates of these isolates to five antifungal agents were analyzed.Azole-resistant (n=30),dose dependent sensitive (S-DD) (n=13),and susceptible isolates (n=10) were randomly selected from the microbiology laboratories of three obstetrics and gynecology hospitals in Shanghai.The expression levels of drug efflux pump related gene CDR1,CDR2,MDR1 and drug target enzyme gene ERG11 were analyzed by real-time fluorescence quantitative polymerase chain reaction (PCR).At the same time,the ERG11 and ERG3 genes were amplified by PCR and sequenced,and analyzed for resistance-related mutations.Results Of the 1 646 C.albicans strains,5.2%,3.2%,2.5% and 2.1% were resistant to itraconazole,voriconazole,fluconazole and 5-fluorocytosine,respectively.All isolates were sensitive to amphotericin B.The expression of ERG11 gene was significantly higher in S-DD group and azole-resistant group than in azole-sensitive group (P<0.05).The expression of CDR1,CDR2 and MDR1 did not show significant difference among the three groups.There were 13 missense mutations in the ERG11 gene,of which T123I,P98S and Y286D amino acid substitutions were newly discovered.Both T123I and Y132H were identified in 26 resistant isolates,of which 16 gene mutation was detected in two pan-azole-resistant isolates.Conclusions The C.albicans strains isolated from vulvovaginal candidiasis showed higher resistance rates to azole antifumgal agents than that to 5-fluorocytosine and amphotericin B.Mutation and over-expression ofERG11 gene may be one of the prevalent molecular mechanisms underlying azole resistance in C.albicans.were pan-azole-resistant.In addition,the ERG3 heterozygous
3.Clonal dissemination of fluconazole-resistant Candida albicans strains isolated from vulvovaginal candidiasis
Yongqin WU ; Zhiheng WANG ; Jing GAO ; Huifen CHEN ; Zhenhua TANG ; Chunmei YING
Chinese Journal of Infection and Chemotherapy 2017;17(3):321-325
Objective To investigate the distribution and molecular epidemiology of Candida strains isolated from vulvovaginal candidiasis in Shanghai,and conduct molecular phylogenetic analysis of the strains.Methods Candida pathogens were collected from the patients with vulvovaginal candidiasis during the period from August 2015 to February 2016 in Obstetrics and Gynecology Hospital of Fudan University,Shanghai First Maternity and Infant Hospital,and Intemational Peace Matemity and Child Health Hospital.All the strains were identified and statistically analyzed.ATB FUNGUS 3 kit was used to determine the minimum inhibitory concentration of antifungal agents against these strains in vitro.Molecular typing was conducted using multilocus sequence typing (MLST) method.Phylogenetic analysis was carried out by eBURST and MEGA 6 software.Results Of the 2 185 strains of Candida,1 988 were identified as Candida albicans,149 Candida glabrata,20 Candida tropicalis and 28 other Candida species.Overall,6.5% of the Candida albicans strains were resistant to fluconazole.Twenty-six diploid sequence types (DSTs) were identified among the 93 strains of Candida albicans analyzed,including 50 fluconazole-susceptible strains with sporadic genotypes,but 43 fluconazole-resistant strains clustered as one clonal complex (CC 69) on the same branch (MLST Clade 1) of phylogenetic tree.Conclusions Candida albicans was the main pathogen of vulvovaginal candidiasis in the three obstetrics & gynecology hospitals in Shanghai,which showed slightly higher resistance to fluconazole.It is necessary to monitor the spread of fluconazole-resistant Candida albicans in these hospitals,especially clonal dissemination of CC 69 clone.
4.Combined use of matrix metalloproteinase-9 and N-terminal pro-brain natriuretic peptide in risk stratification of non-ST elevation acute coronary syndrome
Chunyan ZHANG ; Congxia WANG ; Yongqin LI ; Zhenhua HAN ; Yan ZHANG ; Haoyu WU ; Xiaohui QUAN ; Haixia MA
Journal of Xi'an Jiaotong University(Medical Sciences) 2016;37(3):313-317
Objective To explore the role and relationship of N-terminal pro-brain natriuretic peptide (NT-proBNP) and matrix metalloproteinase-9 (MMP-9 ) in risk stratification and prognosis assessment of non-ST elevation acute coronary syndrome (NSTE-ACS).Methods We recruited 114 patients with NSTE-ACS and classified them into three groups according to the GRACE risk stratification:high-risk,intermediate-risk and low-risk groups.Another 5 8 patients were recruited as controls.Arterial blood was collected before angiography for the measurement of serum NT-proBNP and MMP-9 .Gensini score was used to evaluate the degree of coronary artery stenosis.All the patients were followed up for 6 months and MACE was observed and recorded.Results ① The levels of lg NT-proBNP and MMP-9 significantly differed between the groups (P<0.05).② ROC curve analysis showed that lg NT-proBNP could predict MACE of NSTE-ACS;area under the curve was 0.795,the cutoff value was 2 .0 6 9 ,corresponding to the NT-proBNP value of 1 1 6 .5 6 ng/L.MMP-9 could predict MACE of NSTE-ACS;area under the curve was 0 .6 9 6 ,the cutoff value was 3 2 .4 9 ng/ml;both of the abnormal indexes could predict MACE with the sensitivity of 80.41%,specificity of 82.19%,and Youden’s index of 0.63.③ Cox regression analysis showed that abnormal MMP-9 and NT-proBNP levels were independently related to the incidence of MACE by the value of OR as 3.751.Conclusion MMP-9 and NT-proBNP may be used as serological indicators in risk stratification of NSTE-ACS. The combined use of NT-proBNP and MMP-9 increases the power of predicting MACE.
5.Management status quo of migrant workers with chronic hepatitis B and countermeasures research
Shichun HE ; Dongxia WANG ; Guicheng WU ; Yongqin CHEN ; Li YAN ; Renmei XIAO
Chongqing Medicine 2016;45(20):2810-2813
Objective To understand the management status quo of migrant workers with chronic hepatitis B (CHB) to ex‐plore the management countermeasures and improve the survival quality for tamping the foundation of the healthy project .Methods Totally 300 migrant workers with CHB were performed the living quality evaluation and investigation on the service needs ,com‐pliance ,economic condition ,categories and proportion of reimbursement by adopting the supplementary revision of SF‐36 living quality scale and general information questionnaire ;the influencing factors of their living quality were performed the univariate anal‐ysis and multivariate stepwise regression analysis .Results The statistical analysis found that whether convenient for outside visit‐ing hospital ,categories and proportion of reimbursement ,whether normalized antiviral therapy ,whether conducting examination and follow up at regular intervals and liver disease specific symptoms were the influencing factors of living quality in the migrant work‐ers with CHB(P<0 .05);the living quality in the patients with outside convenient visiting hospital ,high reimbursement proportion , normalized antiviral therapy and examination and follow up at regular intervals was significantly higher than that in the patients with inconvenient outside visiting hospital ,low reimbursement proportion ,non‐normalized anti‐viral therapy and examination and follow up without regular intervals(P<0 .05);the liver disease specific symptom score showed the positive correlation trend with the living quality score (B=7 .657 ,SD=2 .650 ,t=2 .889 ,P=0 .004) .Conclusion It is necessary to improve the patient′s medical needs ,reimbursement type and proportion ,increase the compliance of patient′s normalized examination and follow‐up at regular in‐tervals and standard antiviral treatment ,thus to realize the standardized examination and treatment in CHB patients ,prevent or de‐lay the disease progression ,avoid liver cirrhosis and decompensated hepatopathy ,reduce the occurrence of HCC ,improve the quality of life and prolong the survival period .
6.The impact of telmisartan on angiotensin converting enzyme 2 mRNA expression in monocyte-derived macrophages of diabetic hypertensive patients
Yongqin LI ; Juanjuan WU ; Dengfeng GAO ; Yanmei FAN ; Yan ZHANG ; Xiaojin QIN
Chinese Journal of Internal Medicine 2013;(1):26-29
Objective To investigate the effects of telmisartan on the expression of angiotensin converting enzyme2 (ACE2) mRNA in monocyte-derived macrophages of hypertensive patients companied with diabetes.Methods 62 essential hypertensive patients companied with diabetes were randomly divided into two groups:regular treatment group,and telmisartan group.Then the content of ACE and ACE2 in serum was detected by ELISA,and the expression of ACE mRNA and ACE2 mRNA in monocyte-derived macrophages of patients was detected by RT-PCR before and after having been treated.Results (1) After having been treated for 4 weeks and 12 weeks,the blood pressure of the patients in two groups were decreased significantly,Comparing with regular group,telmisartan group seemed to have more obvious therapeutic effect (P < 0.05) ; (2) After having been treated for 12 weeks,glycosylated hemoglobin diseased in both group,but there was no significant difference between the two group (P > 0.05) ; (3) In telmisartan group,the content of ACE2 in serum was increased after having been treated for 12 weeks than that in regular treatment group,[(23.9 ± 8.2) U/L vs (16.3 ± 8.9) U/L,P < 0.05] ; and the expression of ACE2 mRNA in monocyte-derived macrophages in telmisartan group was obviously increased after 12 weeks comparing with regular treatment group (0.73 ±0.06 vs 0.51 ±0.04,P <0.01).Conclusion The role of telmisartan in decreasing blood pressure and it's advantage to the metabolism of glucose are partly related with the up-regulation of ACE2 mRNA.
7.The complications and prevention of percutaneous vertebral kyphoplasty for the treatment of the thoracic and lumbar osteoporotic compression fractures during the operation
Xisan WANG ; He LIU ; Guangxun HU ; Wu LUO ; Li LI ; Yongqin FANG ; Huiying MAI
Journal of Endocrine Surgery 2013;7(3):226-230
Objective To discuss the complications of percutaneous kyphoplasty (PKP) in treatment of osteoporotic compression fractures (OVCFs) of the thoracic and lumbar vertebrae,and to investigate their causes and prevention.Methods From Jan.2004 to Dec.2012,PKP or PKP combined with percutaneous vertebroplasty(PVP) was performed on 126 vertebrae in 112 thoracolumbar OVCFs patients.There were 21 males and 91 females.The average age was 69 years (ranging from 36 to 85).100 cases had single vertebra,10 cases had double vertebrae,and 2 cases had 3 vertebrae.The injured segments were identified by MRI before surgery,and the fractures of the vertebrae were observed clearly by X ray and CT scan.The causes of the complications were retrospective analyzed.Results Perioperative complication happened in 68 cases (54%).The leakage of the bone cement happened in 66 cases (52.4%):one of them had high fever after the leakage happened behind the post-wall of the vertebra body,and it disappeared after one week with the relevant treatment.There was no injury of the nerve.Most of the leakage happened in front of the vertebra body,few happened in the terminal plate,and few happened behind the vertebral plate.There was no pulmonary embolism.Toxic reaction of the bone cement wasn't found in this team.There was no artery or nerve injury.One temporary spinal cord injury happened,one case was punctured in a wrong vertebra,and balloon rupture happened in one case.One case didn't achieve pain release.No infection happened.Conclusion The bone cement leakage was the most common complication associated with PKP in treatment of OVCFs.The complication rate can be reduced if the operation indications are strict,the volume of the filling cementis is well controlled,and the operation is performed in experienced hands.
8.Soft Environment Construction in Opening Laboratory in Key Subject
Li HAN ; Changbo LIU ; Jahong JIN ; Yongqin ZHOU ; Hongyan WU ; Changju ZHANG
Chinese Journal of Medical Education Research 2003;0(03):-
Soft environment of opening laboratory in key subject will deeply affect the construction and development of disciplines.Developing and innovative academic team;scientific and rigorous running mechanism,healthy and concordant academic atmosphere,active and positive behavior mode,all of the above are the main factors of soft environment of laboratory.From now on,we need try our best to improve human rights,design more efficient aims,constitute impellingly guarantee system and fine mechanism of consistent of regulations and environment,apply modern managing instrument scientificly and improve managing efficiency.
9.Relevance analysis of amino acid contents in cultivated Cordyceps and cultivation materials.
Xiaoli WU ; Fei LIU ; Wei ZENG ; Guoyue ZHONG ; Yongqin TU ; Shijiang CHEN
China Journal of Chinese Materia Medica 2010;35(2):142-144
OBJECTIVETo clarify the relevance of amino acid content in cultivated Cordyceps and cultivation materials.
METHODThe content of amino acid was determined with L-8800 amino acid analyzer, and the relevance of amino acid content was analyzed with SPSS.
RESULT AND CONCLUSIONExcept mycelium of the C. sinensis or the blood-lymph of the larva, the cultivated Cordyceps and the main relevant cultivation materials had detected to contain all kinds of amino acids. Except among the mycelium, the blood-lymph of the larva, the part of the larva or of the stroma of cultivated Cordyceps, there was distinct relevance of amino acid contents in cultivated Cordyceps and the cultivation materials (P<0.01).
Amino Acids ; analysis ; metabolism ; Animals ; Cordyceps ; chemistry ; metabolism ; Larva ; chemistry ; microbiology ; Moths ; chemistry ; microbiology ; Mycelium ; chemistry ; metabolism
10.Relationship of plasma levels of microRNA 491-5p and its target gene polymorphism with the prognosis of patients with premature coronary artery disease
Yan ZHANG ; Congxia WANG ; Weidong MA ; Yongqin LI ; Zhenhua HAN ; Chunyan ZHANG ; Haoyu WU ; Xiaohui QUAN ; Jing HUI
Journal of Xi'an Jiaotong University(Medical Sciences) 2016;37(3):318-321
Objective To study the relationship of the plasma levels of miRNA-491-5p in Han population in Shaanxi Province and the changes of single nucleotide polymorphisms (SNP ) of the target gene matrix metalloproteinases-9 (MMP-9 ) of miRNA-4 9 1-5 p (has-miR-4 9 1-5 p ) with the incidence risk and prognosis of premature coronary artery disease (pCAD)through the case-control design.Methods In this study,we made a consecutive recruitment of 270 pCAD cases in the case group and 300 cases in the control group.Using the polymorphism method of polymerase chain reaction and restriction fragment length (PCR-RFLP),target gene MMP-9 of has-miR-491-5p and rs1056628 genotypes was detected to compare the association between the variant genotypes and pCAD.Results In the changes of rs1056628C-A polymorphisms,compared with that of CC genotypes (the incidence was 42%),the risks of having coronary heart disease in the individuals carrying CA and AA genotypes were 31%,the difference was statistically significant (P=0.045).The risks of developing coronary heart disease in the individuals carrying CA and AA genotypes were reduced more significantly in the population with low total cholesterol (TC),and low low-density lipoprotein cholesterol (LDL-C).Conclusion Target gene MMP-9 of has-miRNA-491-5p rs1056628C-A polymorphism is associated with the reduced incidence risk of pCAD,and carrying C alleles is an independent risk factor for pCAD.