Objective To discuss the value of combination of various clinical laboratory methods in the diagnosis of Mycobacteri-um tuberculosis(MTB) .Methods T-SPOT .TB ,sputum smear ,sputum culture ,and MTB-DNA detection were used to detect MTB .The sensitivity ,specificity ,rate of missed diagnosis ,coincidence rate and correct diagnosis index for tuberculosis diagnosis of the four methods and their pairwise combinations were analyzed and compared .Results Comparing with other methods ,T-SPOT . TB combined with MTB-DNA detection had the highest sensitivity ,coincidence rate and correct diagnosis index ,and the lowest rate of missed diagnosis ,with significant difference(P<0 .05) .Conclusion T-SPOT .TB combined with MTB-DNA detection could be used as an adjuvant method for the early diagnosis of tuberculosis .

OBJECTIVE:To probe into the characteristics and the general pattern of adverse drug reactions(ADRs)induced by ritodrine and relevant factors. METHODS:26 literatures according with ADR diagnosis standard were retrieved from CNKI from 1999 to 2009. A total of 337 ADR cases induced by ritodrine were analyzed statistically. RESULTS:The incidence of ritodorine-inducing ADRs was 29.96%(337/1 125). Several clinical manifestations appeared simultaneously. ADR of cardiovascular system accounted for 76.55%(n=284). 5.93% of patients with ADR stop taking medicine because of poor drug tolerance. CONCLUSION: Great importance should be attached to ADR monitoring,adjustment of administration route to guarantee the safety of drug use.

BACKGROUND:Metabonomics has been proved to analyze and observe the pathological process of rat myocardial infarction and the underlying mechanism. OBJECTIVE:To further analyze the metabolomic pathways of bioinformatics in rat models of myocardial infarction. METHODS:The experimental studies about rat myocardial infarction were retrieved from CNKI, WanFang, CqVip, PubMed and Embase databases. The metabolic products described in the literatures were col ected and summarized. Signaling pathways were analyzed using KEGG database molecular function annotation, the enzymes, translocators and their properties were analyzed by HMDB database. Metabolites pathway were visualized with MetPA. RESULTS AND CONSLUSION:A total of 26 metabolic products were identified in the included literatures and mainly participated in 29 metabolic pathways. Through topology analysis, 5 of the 10 metabolic pathways were selected and regarded as the metabolic pathways of myocardial infarction in rats, including aminoacyl-tRNA biosynthesis;glycine, serine and threonine metabolism;valine, leucine and isoleucine biosynthesis;biosynthesis of unsaturated fatty acids;phenylalanine, tyrosine and tryptophan biosynthesis. In conclusion, the bioinformatics analysis of metabolites in rats with myocardial infarction show that myocardial infarction is related to the metabolism and metabolic pathways of carbohydrates, proteins, fat and RNA.

OBJECTIVE: To establish an RP-HPLC method for the determination of aminophylline,eyhedrine and guaifenesin in Xiaoer kechuan oral solution.METHODS: The determination was performed on Hypersil ODS column(150 mm?4.6 mm,5 ?m).The mobile phase consisted of acetonitrile-0.015 mol?L-1 KH2PO4(0.1% triethylamine and pH value of phosphoric acid adjusted to 2.7)(10 ∶ 90) with a flow rate of 1.6 mL?min-1 and detection wavelength of 254 nm and 209 nm.RESULTS: The linear ranges were 356.4～712.8 ?g?mL-1 for aminophylline,88～176 ?g?mL-1 for eyhedrine and 106～212 ?g?mL-1 for guaifenesin(r=0.999 9).The average recovery rates were 101.0%(RSD=0.73%,n=9),99.7%(RSD=1.00%,n=9),98.3%(RSD=0.44%,n=9),respectively.CONCLUSIONS:The method is simple and accurate for quality control of Xiaoer kechuan oral solution.

Objective To evaluate the value of Compas technique( computed optimun method for profile angle of singht,Compas) in displaying intracranial aneurysms. Methods DSA images of 31 cases of subarachnoid hemorrhage diagnosed by CT were studied. The DSA images in routine A-P and Lateral projections were compared with the images obtained by Compas technique in the same equipment. Results 23 of 31 were diagnosed as intracranial aneurysms by Compas and confirmed by operation, while only 5 were diagnosed definitely with routine A-P & Lateral projections. The other 18 studies were discovered as blurred margin of the artery but indefinite for the diagnosis of aneurysms. There is a statistical difference between the two methods. ?~2=14.93,P

Objective To investigate the incidence, clinical patterns, and species distribution of pathogenic fungi of onychomyeosis in patients with chronic viral hepatitis (CVH), and to analyze the relationship between onychomycosis and CVH. Methods From November 2005 to October 2006, direct microscopy and fungal culture were performed on nail samples from CVH patients with clinically suspected onychomycosis in the two largest institutions for communicable disease control in Guangzhou city. The incidence, clinical patterns, and species distribution of pathogenic fungi of onychomycosis were assessed based on the findings in mycologic examinations. Results The study randomly recruited 995 patients with CVH, and onychomycosis was diagnosed in 116 patients. The incidence of onychomycosis was 11.66% in total, 6.20%, 8.59%, 14.09%, 19.67% in patients with mild, moderate, severe and extremely severe CVH respectively, 7.09%, 17.29%, 19.13% and 27.27% in patients with a clinical course of CVH of 0.5-9 years, 10-19 years, 20-29 years, ≥30 years respectively. The most common clinical pattern was distal and lateral subungual onychomycosis (DLSO, 69.83%), followed by total dystrophic onychomycosis (TDO, 14.66%). Among the pathogenic fungi, dermatophytes amounted to 71.43%, yeasts 21.43%, moulds 7.14%, and Trichophyton rubrum was the most frequently isolated fungus (42.86%). Conclusions The incidence of onychomycosis in patients with CVH is correlated with the severity and course of CVH. Among these patients, the most common clinical pattern is DLSO with the most frequent fungal species being dermatophytes and predominant fungal isolate being Trichophyton rubrum.

Objective To investigate the expression of cathepsin B in photoaging skin and its signifi-cance.Methods Skin specimens were obtained from the right forearm(sun-exposed sites)and buttock (unexposed sites)of 6 healthy volunteers with informed consent and subjected to immunohistochemistry for the detection of cathepsin B expression.Primary human fibroblasts derived from the prepuce of children aged 3 to 6 years were cultured in vitro;after 10 to 15 passages,cells were divided into four groups to be treated with methoxsalen of 50 mg/L for 24 hours followed by ultraviolet A(UVA)exposure(premature senescence group),phosphate buffered saline(PBS)only(control group),UVA exposure only(UVA group),methoxsalen only(methoxsalen group).Then,the protein and mRNA expressions of cathepsin B were detected by Western blot and RT-PCR,respectively,in these fibroblasts 1,2,3 weeks after the treatment.Results Cathepsin B was observed in both exposed and unexposed sites of all volunteers,and the average absorbence of cathepsin B was significantly lower in exposed sites than in unexposed sites(0.2130±0.7997 vs 0.4520±0.5921,t=5.37,P<0.05).Decreased protein expression of cathepsin B was also noted in the premature senescence group compared with the other three groups.Moreover,the gray ratio between cathepsin B protein and glyceraldehyde phosphate dehydrogenase(GAPDH)in premature senescence group reduced from 28.099±O.054 before treatment to 25.1 03±0.102 in week 1 and 17.693±0.099 in week 3 after UVA exposure.RT-PCR revealed that the mRNA expression level of cathepsin B in fibroblasts of premature senescence group decreased by 36 percent compared with that in the control group.Conclusions The expression of cathepsin B decreases in photoaged skin as well as in UVA-exposed fibroblasts in a time-dependent manner,which may be associated with the self-repair of photoaged skin.

Objective:To investigate the effect and molecular mechanism of circ_0001955 on the radiosensitivity of prostate cancer DU145 cells.Methods:The si-con, si-circ_0001955, miR-con and miR-149 were transfected into DU145 cells and recorded as the si-con group, si-circ_0001955 group, miR-con group, miR-149 group. The miR-149 and pc-circ_0001955 were co-transfected into DU145 cells and recorded as the miR-149+ pc-circ_0001955 group. Untreated cells were used as the blank control (NC) group. Real-time quantitative PCR was employed to detect the expression levels of circ_0001955 and miR-149. MTT assay was performed to detect cell viability. Flow cytometry was carried out to detect cell apoptosis. Transwell chamber assay was conducted to observe cell migration and invasion. Western blot was performed to detect the expression levels of MMP-2, MMP-9, Cleaved caspase-3, Cleaved caspase-9 and γ-H 2AX proteins. Colony formation assay was employed to determine the cell radiosensitivity. Dual-luciferase reporter assay was conducted to verify the targeting relationship between circ_0001955 and miR-149. Results:The circ_0001955 was highly expressed, whereas the miR-149 was lowly expressed in prostate cancer DU145 cells. Silencing circ_0001955 or over-expressing miR-149 could decrease the cell viability, migration and invasion, down-regulate the expression levels of MMP-2 and MMP-9, up-regulate the expression levels of Cleaved caspase-3 and Cleaved caspase-9, and increase the apoptosis rate (all P<0.05). After 4 Gy dose irradiation, the expression level of γ-H 2AX was up-regulated, the cell survival fraction was decreased, and the sensitivity ratio was 1.38. circ_0001955 could targetedly regulate the expression level of miR-149. After simultaneous overexpression of circ_0001955 and miR-149, cell proliferation activity and the number of migrating and invading cells were increased, cell apoptosis rate was decreased, and cell survival fraction was increased, and the sensitivity ratio was calculated as 0.72. Conclusion:Silencing circ_0001955 can targetedly up-regulate the expression level of miR-149, which inhibits the proliferation, migration, and invasion, induces cell cycle arrest, induces cell apoptosis and increases the radiosensitivity of prostate cancer DU145 cells.

Skin wounds are global public problems,especially in terms of the difficult healing of chronic wounds,which may seriously affect patients'lives.Most skin-wound animal models are currently established by physical method,and different animal models have different biological characteristics.This review therefore classifies mouse,rat,and other animal models of skin wounds according to the literature,summarizes and analyzes the construction of skin-wound animal models based on physical method and evaluation indicators,and considers the advantages and disadvantages of different animal models,to provide a basis for the rational construction of skin-wound animal models and drug research and development.

OBJECTIVETo study the mechanism underlying the effect of the SOCS3 rs4969170 A/G alleles on the occurrence of insulin resistance (IR) in patients with chronic hepatitis C.

METHODSThe promoter region of the SOCS3 gene was amplified by PCR,and luciferase expression vectors were constructed and transfected into HepG2,Huh7 cell lines.The relative luciferase activity of each expression vector was assessed by the dual luciferase reporter gene assay system.Western blotting was used to detect SOCS3 protein expression in PBMCs from groups of patients with the rs4969170 AA and AG genotypes.The state of IR in eight patients was evaluated by determining their HOMA-IR.

RESULTSThe pGL3-A, PGL3-G and pGL3-control vectors showed significantly different luciferase expression in the HepG2 cells (0.121 00 ± 0.022 07,0.027 00+/-0.012 49 and 0.043 33 ± 0.005 51; F =48.068, P=0.001) and in the Huh7 cell lines (0.164 70 ± 0.007 10,0.027 33 ± 0.017 04 and 0.033 67 ± 0.014 98; F =115.137, P=0.001). The expression of SOCS3 protein was significantly higher in the rs4969170 AA genotype group than in the AG genotype group (1.22 ± 0.40 vs. 0.30 ± 0.19; t =4.149, P=0.006).The IR index of patients with the rs4969170 AA genotype and the AG genotype was 4.11 ± 2.62 and 1.47 ± 1.01 respectively.There were three patients with IR in the rs4969170 AA genotype group and one in the rs4969170 AG group. There was no statistically significant difference between the two genotype groups (t=1.881, P=0.109).

CONCLUSIONSThe SOCS3 rs4969170 A haplotype may enhance transcriptional activity of the gene promoter to regulate gene expression, thereby increasing intracellular SOCS3 protein level and ultimately interfering with insulin signaling and causing IR in patients with chronic hepatitis C.

Cell Line, Tumor ; Genes, Reporter ; Genotype ; Haplotypes ; Hepatitis C, Chronic ; Humans ; Insulin Resistance ; Luciferases ; Polymorphism, Single Nucleotide ; Suppressor of Cytokine Signaling 3 Protein ; Suppressor of Cytokine Signaling Proteins