OBJECTIVE To have a research on the detection of Mycobacterium tuberculosis by fluorescence chip of molecular beacon probe.METHODS Fluorescence chip for the detection of M.tuberculosis was designed,based on the better bonding force and specificity of molecular beacon and target molecule.Hybridization efficiency was optimized,which included the concentration and purity of molecular beacon probe,hybridization temperature,hybridization time,the prescription of hybridization solution and the comparing of molecular beacon fluorescence signals of 4 molecules.RESULTS Molecular beacon fluorescence signal approached the highest when the final concentration of Mg was 5 mmol/L and the amplification efficiency of PCR approached the highest.Half extended molecular beacon probe could bind nice with chip when it was middle labeled with quench group.The results of 3 hybridization solutions were as follows: 0.15% SDS better than 0.2% SDS,10?SSC better than 5?SSC.Strong signal of hybridization reaction could be detected when the concentration of Cy3-BDH molecular beacon probe was 15 ?mol/L,the concentration of FAM-DABCLYE probe was 9 ?mol/L and the reaction time was 7 h.The efficiency of fluorescence quenching was higher when the molecule was consisted of Cy3-BDH,other than Cy3-DABCLYE.CONCLUSIONS The design of half extended molecular beacon probe tactfully makes use of the advantages of the high bonding force and specificity of molecular beacon probe on the chip technology.Fluorescence chip of molecular beacon for M.tuberculosis has satisfactory detecting rate,specificity and sensibility.

Accidents, Occupational ; Humans ; Hydrogen Sulfide ; poisoning

Adult ; Chromium ; adverse effects ; Electroplating ; Female ; Humans ; Male ; Middle Aged ; Nose ; drug effects ; Occupational Exposure ; adverse effects

Antineoplastic Agents ; administration & dosage ; adverse effects ; Asparaginase ; administration & dosage ; adverse effects ; Child ; Child, Preschool ; Combined Modality Therapy ; Dose-Response Relationship, Drug ; Drug Hypersensitivity ; prevention & control ; Female ; Humans ; Hyperglycemia ; chemically induced ; prevention & control ; Male ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; drug therapy ; Severity of Illness Index ; Time Factors ; Treatment Outcome

Aged ; Aged, 80 and over ; Corynebacterium ; isolation & purification ; Cross Infection ; epidemiology ; microbiology ; Female ; Humans ; Male ; Random Amplified Polymorphic DNA Technique

Adult ; Aged ; Aged, 80 and over ; Anthracosis ; complications ; microbiology ; Anti-Bacterial Agents ; pharmacology ; Drug Resistance, Bacterial ; Humans ; Lung Neoplasms ; complications ; microbiology ; Male ; Middle Aged ; Pseudomonas Infections ; microbiology ; Pseudomonas aeruginosa ; drug effects

Head and Neck Neoplasms ; pathology ; Humans ; Male ; Middle Aged ; Neurilemmoma ; pathology ; Neurofibroma ; pathology ; Scalp ; pathology

AIM:To investigate the changes of Wnt signaling pathway in catalpol-induced proliferation of rat bone marrow mesenchymal stem cells (BMSCs).METHODS:The BMSCs were isolated from SD rats , purified by differ-ential time adherent method and divided into control group and catalpol (1.0 mg/L) group.Flow cytometry was used to de-tect the proliferation index of BMSCs .The mRNA levels of Wnt3a, Wnt5a, Wnt11 and β-catenin was evaluated by real-time PCR.In addition, the protein expression level of β-catenin was determined by Western blotting .RESULTS:Prolife-ration index was increased from 8.90%±0.46% to 17.93%±1.68% after treatment with catalpol (P<0.01).Com-pared with control group , the mRNA expression of Wnt5a, Wnt11 andβ-catenin was all increased with catalpol treatment . No difference of Wnt3a mRNA expression between control group and catalpol group was observed .Meanwhile, the protein expression of β-catenin was increased in catalpol group compared with control group .CONCLUSION:Catalpol promotes BMSCs going into the cell cycle .Classical and non-classical Wnt signaling pathways are activated in this process .

Acupuncture as an effective complementary and alternative therapy can effectively relieve inflammatory and neurogenic pain, and a proper animal model is a key link to ensure the quality of research in acupuncture analgesia. This article makes some suggestions for improving model making methods, unifying model assessing criteria, and selecting and locating acupoints by analyzing present commonly used animal models of acupuncture analgesia and the present situation of their application and identifying some problems about model making methods, evaluation indices, acupoint selection and clinical transformation existing in animal models of acupuncture analgesia in order to promote the development of basic research in acupuncture.

This study was aimed to investigate the protective effect of catalpol against high glucose induced injury on vascular endothelial cells (ECV-304). ECV-304 cells were culturedin vitro. MTT method was applied to detect cell viability. NO and LDH level were measured by spectrophotometer method. The effect of catalpol against high glucose induced injury on ECV-304 was observed. The results showed that there were no obvious changes in cell viabilities of ECV-304 cultured in normal concentration of glucose medium among groups with different concentrations of catalpol. Compared with the control group, cell viability was significantly decreased (P< 0.01), the NO secretion was significantly reduced (P< 0.01), the LDH level was increased obviously (P< 0.01) in the high glucose (30 mmol·L-1 glucose) injury model group. The high osmotic (24.5 mmol·L-1 mannitol) group was set up as a positive control. Comparison between the low dose (1 ng·μL-1 catalpol + 30 mmol·L-1 glucose), middle dose (10 ng·μL-1 catalpol+ 30 mmol·L-1 glucose), and high glucose (30 mmol·L-1 glucose) injury model group showed no changes on cell viability and NO (P> 0.05); while the LDH level was reduced (P< 0.01). Comparison between the high dose catalpol (100 ng·μL-1 catalpol + 30 mmol·L-1 glucose) group and the high glucose model group showed that the cell viability was obviously increased (P< 0.01); NO secretion was increased (P< 0.05); and the LDH level was obviously reduced (P< 0.01). It was concluded that catalpol had protective effect against high glucose induced ECV-304 injury through the regulation of NO and LDH level. The effect of high dose was obvious.