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Objective To evaluate diagnostic values of thirteen single and combined serum tumor markers in the diagnosis of lung cancer in Chinese people.Methods Chinese databases were searched systematically for prospective studies of serum tumor markers in Chinese patients with lung cancer and standard statistical methods for meta-analysis were applied.Results Thirty articles were selected containing thirteen types of molecular tumor markers and 4 393 people.The optimal serum marker was CEA+CA125+CYFRA21-1 with the combined sensitivity,specificity,positive likelihood ratio,negative likeli-hood ratio,the diagnostic odds ratio and the area under the summary receiver operating characteristic curve (AUC)was 87%[95% confidence interval (CI)0.81~0.91],93%(95% CI 0.89~0.95),11.8 (95% CI 7.84~17.7),0.15 (95% CI 0.10~0.21),81.3(95% CI 44.4~149.0)and 0.910,respectively.Conclusion There was improved diagnostic performance in combined markers than other individuals.Serum tumor marker CEA+CA125+CYFRA21-1 is the optimal biomarker for the diagnosis of lung cancer.
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Objective To investigate the concentrated liquid doses ,oscillation intensity and cracking boiling time to the influence of pre‐treatment HBV‐DNA .Methods The concentrate doses was 90 ,95 ,105 ,110 μL respectively ;mixing methods :vortex mixing 15 seconds group and 30 seconds group ,56 ℃ preheated 120 seconds and then vortex mix 15 seconds group ,56 ℃ preheated 180 seconds and then swirl mix 15 seconds group ;cracking boiling time was 6 ,8 min ,under 12 min ,14 min respectively .Under the a‐bove conditions ,80 samples prepared by the laboratory were measured ,comparing with standard operating ,concentrate 100μL ,beat mix 15 seconds ,cracking boiling 10 min ,which HBV‐DNA concentration was 103 -104 IU/mL .Results Vortex mixing 15 s group and 56 ℃ preheat 180 s then swirl mixing 15 s were both a significant difference(P<0 .05) in the mix mode groups ,comparing with the standard operating group .There were significant differences between the groups boiling lysis time of 6 min and 10 min group ( P<0 .05) .Conclusion Within a certain range ,changing the dose of the concentrated solution ,mixing mode and the time of boiling lysis in extraction process of HBV‐DNA does not affect the test results ,But mixing ways after a certain period preheating make it easier to mix precipitation and release nucleic acid .
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Objective To investigate the types and frequency of gene mutations of β‐thalassemia in south of Sichuan area ,so as to provide basis for β‐thalassemia prevention plan and to help drop β‐thalassemia incidence effectively .Methods Polymerase chain reaction(PCR)and reverse dot blot(RDB)techniques were employed to perform diagnostic analysis for β‐thalassemia genes in sus‐pected thalassemia patient in south of Sichuan region.Results The detection rate of β‐thalassemia was 60 .1% among 319 cases ;9 genes mutation types was found among 17β‐thalassemia genes mutation types .Three types of gene mutations had highest frequency of occurrence ,followed by CD17 41 .3% ,CD41‐42 27 .39% ,IVS‐Ⅱ‐654 24 .35% .Conclusion The gene mutation rate of β‐thalasse‐mia are higher in south of Sichuan region .In order to prevent the birth of children with intermedial and major thalassemia ,the sig‐nificance is important to strengthen hematology screenings and genetic diagnosis for β‐thalassemia.
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Objective To establish a simple ,rapid,highly specific and sensitive molecular detection of carbapenem-resistance acinetobacter baumannii(CRAB)OXA-23 genes,and this method is used to detect the multiple drug-resistant acinetobacter bau-mannii in our hospital,and the purpose is to know the antibiotic resistance of CRAB OXA-23 genes .Methods The loop-mediated isothermal amplification(LAMP)was established for detection of the CRAB OXA-23 genes,and a set of specific primers were de-signed by special software,PrimerExplorer version 4.The LAMP assay was developed on using SYBR Green Ⅰ for fluorescent chromogenic reaction substances,improved through a series of optimization tests,and through macroscopic observation and electro-phoresis test comparison results.At the same time,the application of LAMP was used to test 41 multiple drug-resistant acineto-bacter baumanniis which were collected from December 2013 to March 2014 in our hospitalized patients.Results The ladder ban-ding was produced in CRAB OXA-23 genes strains by the LAMP detection through electrophoresis test,however,no ladder ban-ding was observed in the others .The color of the amplification product in genes strain CRAB OXA-23 changed from orange to green by adding 1 μL SYBR Green Ⅰ,however it was still orange in others.The sensitivity of the LAMP detection in pure cultrue was 5 cfu/μL of the CRAB OXA-23 genes cells.Application of LAMP was used to separate multiple drug-resistant acinetobacter baumanniis from hospitalized patients ,32 strains were tested in 41 strains,the positive rate was 78.04%.Conclusion Separation of the CRAB OXA-23 genes carry rate is higher in our hospital ,and they have very high resistance of commonly used antibacterial drugs.The LAMP method to test OXA-23 gene of CRAB was established in this research was simple ,fast,sensitive and specific. Therefore,it is especially suitable wider use at the grass-roots unit,and it is of great significance for selecting reasonable choice of antibiotics by clinical doctor.
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Objective No uniform standards has been established for the clinical diagnosis of schizophrenia .The article was to investigate the differentially expressed microRNA ( miRNA) profile and explore its clinical significance . Methods Differentially expressed miRNAs were screened by FlashTag TM Biotin RNA chips and SAM software in serum of patients with schizophrenia and healthy controls , then the validation was performed by real-time fluorescent quantitative reverse transcription polymerase chain reaction ( RT-PCR) . Results Three differentially expressed miRNAs were screened , including up-regulated hsa-miR-1281 ( fold change =1.50881) and two down-regulated miRNAs:hsa-miR-2861(fold change=0.642) and hsa-miR-638 (fold change=0.516).The com-parative analysis of RT-PCR by SPSS 17.0 Kruskal Wallis H Test validated the expression levels of hsa-miR-2861 and hsa-miR-638 in patients with schizophrenia decreased significantly in comparison to healthy controls (χ2 =4.089,χ2 =4.083, P<0.001).While the expression level of hsa-miR-1281 in patients with schizophrenia was in higher expression level compared with control group (χ2 =5.333, P<0.001). Conclusion There are differentially expressed miRNA profile in serum of patients with schizophrenia , in which miR-1281 , miR-2861 and miR-638 could be new serum markers for diagnosis of schizophrenia .
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Objective To investigate the female infection situation of human papilloma virus (HPV) and the distribution charac-teristics of HPV gene subtypes in the hospital ,so as to provide a theoretical basis for clinical prevention and treatment of HPV cer-vical infection and the study for developing the preventive HPV vaccine suitable for this hospital .Methods The PCR-reverse dot blot hybridization (PCR-RDB) was adopted to check the genotypes of HPV on the cervical samples in 625 gynecologic outpatients and inpatients .Results Among 625 cases ,210 cases were infected by HPV with the total HPV infection rate of 33 .6% .The single subtype infection was in 152 cases ,accounting for 72 .38% ,the mixed infection by more than or equal to 2 kinds of subtype was in 58 cases ,accounting for 27 .62% .The subtypes with the higher infection rate from high to low were HPV 58(7 .52% ) ,HPV16 (6 .72% ) ,HPV6(5 .76% ) ,HPV43(4 .80% ) ,HPV11(4 .64% ) ,HPV35(3 .36% ) ,HPV56(2 .56% ) ,HPV18(2 .40% ) ,HPV52 (2 .40% ) and HPV68(2 .40% ) .Conclusion The HPV infection rate in the gynecologic outpatients and inpatients in the hospital is high ,the subtype distribution is wider and is dominated by the high risk HPV infection .The most common subtype is HPV58 and multiple HPV infection rate is high .
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OBJECTIVE To investigate the value of acute phase protein in the diagnosis and therapy for nosocomial infection monitoring. METHODS The levels of serum C-reactive protein(CRP),serum amyloid A(SAA),?_1-acid glycoprotein(AAG),and ?_1-antitrypsin(AAT) were measured in 71 gynecological patients with nosocomial infection during chemotherapy,Thirty normal controls and 33 chemotherapy patient controls were detected by nephelometry and compared with white blood cell counts. RESULTS The nosocomial infection rate of chemotherapy patients was 16.7%.Main pathogens were Gram-negative bacteria(60.6%).Fungi infection rate was 19.7%.The most frequent hospital infection sites were respiratory tract,gastrointestinal tract and wound.Compared with controls,the levels of serum CRP,SAA,AAG and AAT were significantly higher in chemotherapy patients with bacteria infection(P