1.Establishment of Real-Time PCR and Molecular Beacon Detection Method for Bifidobacteria
Microbiology 1992;0(06):-
0.97).The method of Real-time PCR and molecular beacon detection for bifodobacteria has many advantages,such as being sensitive,specific,simple and fast,and this method can be used in situ detection of bifidobacteria quantitatively.
2.Inhibitory effects of butyl alcohol extract of Baitouweng decoction on yeast-to-hyphae transition of Candida albicans isolates from VVC in alkaline pH environment.
Meng-xiang ZHANG ; Dan XIA ; Gao-xiang SHI ; Jing SHAO ; Tian-ming WANG ; Chuan-chao TANG ; Chang-zhong WANG
China Journal of Chinese Materia Medica 2015;40(4):710-715
OBJECTIVETo investigate the effects of butyl alcohol extract of Baitouweng decoction ( BAEB) on yeast-to-hyphae transition of Candida albicans isolates from vulvovaginal candidiasis (VVC) in alkaline pH.
METHODSerial 2-fold dilution assay was used to determine the minimal inhibitory concentrations (MICs) of Baitouweng decoction extracts against C. albicans isolates from VVC, XTT assay was applied to determine the metabolic activity of C. albicans hypha treated by BAEB for 6 h. The morphological change of C. albicans treated by BAEB was inspected at different pH by inverted microscope, fluorescence microscope, scanning electron microscopy (SEM). Solid agar plate and semi-solid agar were utilized to evaluate colony morphology and invasive growth of C. albicans, respectively. Quantitative Real-time PCR (qRT-PCR) was adopted to observe the expressions of hyphae-specific genes including HWP1, ALS3, CSH1, SUN41 and CaPDE2.
RESULTThe MIC of BAEB against C. albicans is less than that of other extracts; hyphae grow best at pH 8. 0; 512 mg · L(-1) and 1,024 mg · L(-1) BAEB could inhibit formation of hyphae and influence colony morphology. When treated by 512 mg · L(-1) and 1,024 mg · L(-1) BAEB, the colonies became smooth; while by 0 and 256 mg · L(-1) BAEB, the colonies became wrinkled. In semi-solid agar, the length of hyphae decreased steadily as the concentration of BAEB lowered. The expression of HWP1, ALS3, CSHl, SUN41 were downregulated by 5.12, 4.26, 3.2 and 2.74 folds, and CaPDE2 was upregulated by 2.38 fold.
CONCLUSIONBAEB could inhibit yeast-to-hyphae transition of C. albicans isolates from VVC in alkaline pH.
Antifungal Agents ; isolation & purification ; pharmacology ; Candida albicans ; drug effects ; genetics ; growth & development ; Candidiasis, Vulvovaginal ; drug therapy ; microbiology ; Drugs, Chinese Herbal ; isolation & purification ; pharmacology ; Female ; Humans ; Hydrogen-Ion Concentration ; Hyphae ; drug effects ; growth & development
3.Identification of moutan cortex and its adulterants by ITS2 sequence.
Meng WEI ; Lan WU ; Yuan TU ; Wei-Chao REN ; Li XIANG ; Wei SUN ; Lin-Bi ZHANG ; Zhi-Gang HU
China Journal of Chinese Materia Medica 2014;39(12):2180-2183
To explore a new method to identify Moutan Cortex to guarantee its safe use, internal transcribed spacer 2 (ITS2) sequence was used to identify Moutan Cortex and its adulterants. DNA was extracted and target fragments were amplified. Sequences were analyzed and assembled by CodonCode Aligner V3.7.1. Genetic distances were computed and phylogenetic tree was constructed based on kimura 2-parameter (K2P) model by MEGA 5.0. The length of the 20 ITS2 sequences of Moutan Cortex from nine different places is 227 bp, and no variation site was detected. The maximum inter-specificK2P distance of Moutan Cortex is 0, the minimum intra-specific K2P distance is 0.041, the average intra-specific K2P distance is 0.222. According to NJ analysis, Moutan Cortex from different places can get together as one branch with bootstrap support values 99%, which indicates Moutan Cortex can be easily distinguished from its adulterants. Using ITS2 sequence can accurately identify Moutan Cortex and its adulterants, it is an effective supplementary to traditional identification methods.
Base Sequence
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China
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DNA Barcoding, Taxonomic
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methods
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DNA, Plant
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genetics
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DNA, Ribosomal Spacer
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genetics
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Drug Contamination
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prevention & control
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Drugs, Chinese Herbal
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chemistry
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classification
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Molecular Sequence Data
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Paeonia
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classification
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genetics
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Phylogeny
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Quality Control
4.Protective effect of cold autologous blood cardioplegic solution on the heart of infants with cyanotic congenital heart disease.
Chao MA ; Ding-Rong SHEN ; Qing ZHANG ; Xiang-Chun MENG ; Yuan-Xiang WANG ; Le PENG ; Bao-Ying MENG
Chinese Journal of Contemporary Pediatrics 2013;15(6):453-457
OBJECTIVETo study the protective effect of cold autologous blood cardioplegic solution on the heart of infants with cyanotic congenital heart disease (CCHD).
METHODSNinety-six infants with CCHD who underwent cardiopulmonary bypass (CPB) were randomly and equally divided into three groups: histidine-tryptophan-ketoglutarate (HTK) solution, cold non-autologous blood cardioplegic solution, and cold autologous blood cardioplegic solution. The right auricular tissues were taken before aortic cross-clamping and at 30 minutes after aortic declamping, and ATP level and energy charge (EC) in the myocardium were measured. Venous blood was collected before and immediately after CPB, and the serum levels of creatine kinase (CK)-MB and cardiac troponin I (cTnI) were measured. The clinical parameters, such as the re-beat time and re-beat rate during CPB, cardiac index, dependence on positive inotropic agents, and left ventricular ejection fraction (LVEF) at 2 hours after CPB, the incidence rate of arrhythmia within 24 hours after CPB, and postoperative complications and mortality, were recorded.
RESULTSAt 30 minutes after aortic declamping, the three groups showed significantly decreased ATP and EC levels (P<0.05), and the cold autologous blood group had significantly higher ATP and EC levels than the other two groups (P<0.05). Immediately after CPB, the three groups showed significantly increased serum levels of CK-MB and cTnI (P<0.05), and the cold autologous blood group had significantly lower serum levels of CK-MB and cTnI than the other two groups (P<0.05). The cold autologous blood group had significantly better outcomes than the other two groups in terms of the re-beat time during CPB and the dependence on positive inotropic agents and LVEF at 2 hours after CPB (P<0.05).
CONCLUSIONSCold autologous blood cardioplegic solution is superior to HTK and cold non-autologous blood cardioplegic solutions in preserving myocardial energy and reducing myocardial injury in infants with CCHD who undergo CPB, thus providing a better protective effect on the heart.
Cardioplegic Solutions ; pharmacology ; Cardiopulmonary Bypass ; Energy Metabolism ; Female ; Glucose ; pharmacology ; Heart Defects, Congenital ; metabolism ; surgery ; Humans ; Infant ; Infant, Newborn ; Male ; Mannitol ; pharmacology ; Myocardium ; metabolism ; Potassium Chloride ; pharmacology ; Procaine ; pharmacology ; Ventricular Function, Left
5.A new flavonoid from Lysimachia foenum-graecum.
Xiang-ri LI ; Zhi-meng LI ; Shu-shan DU ; Rui-chao LIN
Acta Pharmaceutica Sinica 2007;42(7):747-749
The aim of the study was to look for the chemical constituents of the herb of Lysimachia foenum-graecum. The herb of Lysimachia foenum-graecum was extracted with 70% EtOH. The isolation and purification was performed with a combination of multi-column chromatography and the structure was determined by spectral analysis. The flavonoid compound was obtained and elucidated as kaempferol-7-O(4"-(E)-p-coumaroyl-)-alpha-L-rhmanopyranosyl)-3-O-beta-D-glucopyranosyl (1-->4)-alpha-L-rhmanopyranosyl (1-->2)-beta-D-glucopyranoside. It is a new flavonoid compound.
Flavonoids
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chemistry
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isolation & purification
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Glucosides
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chemistry
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isolation & purification
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Molecular Conformation
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Molecular Structure
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Plant Components, Aerial
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chemistry
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Plants, Medicinal
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chemistry
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Primulaceae
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chemistry
6.Study on the role of miRNA-183 family in malignant cancer
li Zi ZHANG ; liang Jin WANG ; chao Xiang MENG
Tianjin Medical Journal 2017;45(12):1337-1340
MiRNAs have a close relation with the development of malignancy. As a new type of regulatory factor, miRNA plays an important role in the development and progression of tumors, and plays the role of oncogene or tumor suppressor gene. Abnormal expression of miRNA is found in tumors. Most of the abnormal expression of miRNA are related to tumor staging, malignancy, treatment and prognosis, which provides a new strategy for the evaluation of early diagnosis, treatment and prognosis of tumors. The miRNA-183 family is composed of three types of miRNAs including miRNA-96, miRNA-182 and miRNA-183. They present abnormal expressions in tumors of digestive system, urogenital system and respiratory system. More and more researches have been done on the relationship between miRNA-183 family and tumor, and the mechanism has been deeply studied.
7.The correlation between fractional anisotropy value and tumor microarchitecture in astrocytomas with different grade
Ying LIU ; Chuan-Fu LI ; Kai ZHANG ; Jin-Wen HOU ; Qian WANG ; Pei-Xin CONG ; Jia-Yong ZHENG ; Xiang-Shui MENG ; De-Chao FENG ;
Chinese Journal of Radiology 2001;0(04):-
Objective To study the correlation between fractional anisotropy(FA)and tumor microarchitecture(MVD,VEGF and celluarity).Methods Fouteen gliomas(5 grade Ⅰ and Ⅱ,4 grade Ⅲ, 5 grade Ⅳ)confirmed histo-pathologically were performed on diffusion tensor imaging(DTI)using a GE Signa Excite Ⅱ 3.0 T MR scanner(8-channel head coil,SE echo planner imaging(EPI),thickness:5 mm, spacing:0,directions:25,B values:0 and 1000 s/mm~2,TR 6000 ms,TE minimum,FOV:240 mm? 240 mm,image matrix 128?128,NEX 2).Postprocessing was done using a DTI specific software to gain FA image.ROIs were drqwn in tumor parenchyma and the value of FA was recorded.The positive expression of VEGF and CD34 was shown using immuno-histochemistry method.The VEGF,MVD,and cellularity of every slices were recorded.Pearson correlation analysis was used.Results FA(which is 0.102?0.080 in grade Ⅰ and Ⅱ,0.171?0.037 in grade Ⅲ,0.200?0.021 in grade Ⅳ)has the trend to raise with the increasing grade of astrocytomas.FA has significant positive correlation to MVD(40/HP in grade Ⅰ and Ⅱ, 86/HP in grade Ⅲ,101/HP in grade Ⅳ),VEGF(8% in grade Ⅰ and Ⅱ,47% in grade Ⅲ,55% in grade Ⅳ),and cellularity(104/HP in grade Ⅰ and Ⅱ,160/HP in grade Ⅲ,265/HP in grade Ⅳ).The correlation coefficients between FA and VEGF,MVD,and cellularity were 0.748,0.668,0.625 respectively.Conclusion As a new imaging method,DTI can reveal the microarchitecture in gliomas and be value of distinguishing gliomas of different grade.DTI provides a new method of precise diagnosis to glioma preoperatively.
8.Study on community of acaroid mites breeding in home storages in Linquan Area,Anhui Province
Jiao-Jiao GUO ; Xiang-Song MENG ; Chao-Pin LI
Chinese Journal of Schistosomiasis Control 2018;30(3):325-328
Objective To investigate the species and diversity of acaroid mites community in home storages in Linquan ar-ea,Anhui Province.Methods The samples of 48 kinds of storages from the residents in Linquan County were collected,and the mites in them were separated in a microscope directly.Results Totally 19 species of acaroid mites belonging to 14 genera of 6 families were obtained from the 48 kinds of samples.The diversity analysis showed that the number of species,the species richness index and species diversity index of mites in the habitats were in the order of the other storages>drysaltery>grains.Conclusion The quantities of breeding acaroid mites in storages in Linquan area are much larger,meanwhile the species are also very rich,thus in order to reduce the harm of acaroid mites,we should take active measures to control their breeding.
9.Long-term outcome of tension-free hernioplasty for inguinal hernia complicated with liver cirrhosis and ascites.
Hui-Jun SUN ; Yu-Zhuo CHEN ; Qiang SUN ; Xiao-Jiang LIU ; Xiang-Chao MENG ; Jun-Zhong SHI
Chinese Journal of Surgery 2010;48(15):1130-1132
OBJECTIVETo review tension-free repairing for the patients with inguinal hernia complicated with cirrhosis and ascites.
METHODSTension-free herniorrhaphy was performed in 16 cases with inguinal hernia complicated with cirrhosis and ascites from November 1999 to November 2003. The laboratory data before and after the operation were compared and analyzed in this group.
RESULTSOf the patients, 13 cases were male and 3 were female, the mean age was (64 ± 12) years (range, 37 - 85 years). The liver function was classified as A degree in 4 case, B degree in 10 cases and C degree in 2 patients by using Child score. The operation was successfully carried out in all patients without complications and post-operative hepatoencephalopathy. There was no significant change in the plasma total protein, bilirubin, prothrombin activity and international normalized ratio (INR) after the operation. And the levels of albumin, globulin and white blood cell count changed remarkably after the operation (all P < 0.05). Plasma albumin level was obviously effected by the operation and treatment (P = 0.006). The mean follow-up time was 72.5 months (57 - 102 months). No recurrence occurred during the follow-up. There was no patient died in 30 days after the operation. Seven cases (43.8%) died in the later period of follow-up.
CONCLUSIONSThe tension-free repairing is feasible for the inguinal hernia complicated with cirrhosis and ascites. More attention should be paid to the level of plasma albumin and it should be corrected in time. The liver cirrhosis and its complications will progress after the operation with a poor prognosis.
Adult ; Aged ; Aged, 80 and over ; Ascites ; complications ; Female ; Follow-Up Studies ; Hernia, Inguinal ; complications ; surgery ; Humans ; Liver Cirrhosis ; complications ; Male ; Middle Aged ; Prognosis ; Retrospective Studies
10.Clinical observation on percutaneous autologous bone marrow grafting for treatment of fracture nonunion.
Jiang-Tao MA ; Min YU ; Meng-Chao ZHANG ; Xiang-Jiang ZHU ; Hong-Yu XU ; Guo-Jun LIANG
China Journal of Orthopaedics and Traumatology 2009;22(11):862-864
OBJECTIVETo observe the effectiveness of percutaneous bone marrow grafting for treatment of fractures nonunion.
METHODSFrom June 2001 to December 2007, 29 consecutive cases of fractures nonunion were treated with percutaneous autologous bone marrow grafting included 20 males and 9 females, ranging in age from 20 to 71 years, with an average of 40 years. All the cases were traumatic fractures involving 13 of tibia, 10 of femur, 3 of humerus, 2 of ulna, 1 of radius, 11 cases of them were open fractures. All the cases were performed internal or external fixation before marrow grafting, intramedullary pin in 15 cases, plate in 12 cases, external fixator in 2 cases. The time from injury to therapy were from 6 to 12 months, with an average of 8.5 months. The type of nonunion included atrophic in 26 cases,hypertrophic in 3 cases. All the cases were performed 3 times injection, the interval was 1 month. According to the different fracture, the amount of bone marrow was from 6 to 15 ml.
RESULTSAll the 29 cases were followed-up for from 5 to 22 months with an average of 14 months. Four of them were not observed obvious callus after 3 months from the 3rd injection, judged unsuccessful therapy, changed to perform autologous bone grafting (3 of them re-internal fixation), the follow-up ended. The other 25 cases obtained bone union during 3 to 8 months with an average of 4.5 months, the follow-up ended at the time of internal fixation removal.
CONCLUSIONPercutaneous autologous bone marrow grafting is an effective, easy and economic therapy for fracture nonunion. But stable internal or external fixation is the premise. Excessive bone defect, the gap more than 5 mm and mal-align requiring rectification is not appropriate for this therapy.
Adult ; Aged ; Bone Marrow Transplantation ; Female ; Follow-Up Studies ; Fracture Healing ; Fractures, Bone ; diagnostic imaging ; pathology ; physiopathology ; surgery ; Humans ; Male ; Middle Aged ; Skin ; Tomography, X-Ray Computed ; Transplantation, Autologous ; Young Adult