Objective To evaluate the diagnostic value of peripheral blood T-SPOT.TB and pleural effusion′s adenosine deami-nase(ADA)activity in patients with tuberculous pleurisy.Methods Sixty-two patients with suspected tuberculous pleurisy were enrolled in the study,whose peripheral blood T-SPOT.TB and pleural effusion ADA were measured and the best diagnostic thresh-old was determined by ROC curve.Results According to the diagnostic criteria of tuberculous pleurisy,24 patients were diagnosed with tuberculous pleurisy,33 were non-tuberculous pleurisy and 5 undiagnosed in the end.The sensitivity of T-SPOT.TB for the diagnosis of tuberculous pleurisy was 91.7 %,the specificity was 81.8%,Positive predictive value was 78.6%,negative predictive value was 93.1%.The ADA activity was (40.5±15.4)IU/L in tuberculous pleurisy group,which was higher than in non tubercu-lous pleurisy group[(2.4 ±9.5 )IU/L](P <0.01 ).The cut-off value of ADA was 22.5 IU/L in tuberculous pleurisy diagnosis, while its sensitivity and specificity were 83.3% and 84.8% respectively.The sensitivity of the combined detection of T-SPOT.TB and ADA was 95.8%.Conclusion The combined detection of peripheral blood T-SPOT.TB and pleural effusion ADA has a higher sensi-tivity in diagnosis of tuberculous pleurisy,and has important auxiliary diagnostic value for patients with suspected tuberculous pleurisy.

Objective To investigate the size distribution and change of plasma DNA in different gestational weeks between the normal and abnormal pregnancy.Methods Two methods were applied to measuring the lengths of different derived plasma DNA fragments.For the maternal derived DNA,GAPDH gene distribution of each DNA in size-fractionated fragment was assayed by real-time PCR after gel electrophoresis separation;for the fetal derived DNA,size distribution of SRY gene of fetal derived DNA was also determined by using a series of real-time PCR.Results Compared with that of matenal derived DNA,the fragment length of fetal derived DNA was mostly shorter than 300 bp.Compared with that in mid-pregnancy,plasma maternal derived DNA fragment distribution had no significant difference in late-pregnancy and in patients with high-risk of carrying a Down's child,whereas fetal derived DNA fragment was a bit longer.Conclusion The fragment length of fetal derived DNA is significantly longer than that of fetal one in maternal blood.Moreover,because of abnormal pregnancy and accompanied with the pregnancy progress,the number and physico-chemical property(fragment length,for example) of fetal derived DNA has a certain change.

Objective To evaluate the bacteriostasis of sulfamethoxazole(SMZ)combined with trimethoprim(TMP)against My‐cobacterium tuberculosis(MTB) in vitro ,so as to provide basis for clinical application .Methods The minimal inhibitory concentra‐tion(MIC) value of TMP/SMZ against MTB ,including standard sensitive strain(H37Rv) ,clinical sensitive strains(20 strains) and clinical multiple‐drug‐resistance strains(MDR ,30 strains) ,was detected by using MPP observation method .Results The MIC val‐ue of standard strain H37Rv was TNP(0 .5 μg/mL)+SMZ(9 .5 μg/mL) .The growth of 40 strains(accounted for 80% ) of clinical isolates ,including 17 sensitive strains and 23 MDR strains ,could be inhibited by TMP(1 μg/mL)+ SMZ(19 μg/mL) compound . Conclusion TMP combined with SMZ may has good antibacterial activity for strains of MTB in vitro .

Objective To explore the relevance between sequence variation of human papillomavirus (HPV)16 subtypes E2 gene or long control region (LCR) and cervical lesions.Methods Fifty specimens from HPV16 infected people in Chengdu were collected,including cervical exfoliated cells from 38 HPV carriers,papilloma tissues from 8 cases of genital warts,2 with cervical intraepithelial neoplasia (CIN) Ⅱ and 2 with CIN Ⅲ in this study.Polymerase chain reaction was used to amplify E2 gene and LCR,then an evolutionary tree was constructed.Results In all the 50 specimens,there were 12 mutation sites in E2 gene,among which,C→A existed in one specimen of genital warts,and ≥2 mutation sites existed in all the other 48 specimens.There were 28 mutation sites of LCR sequence of all the specimens.Ten specimens were chosen to construct evolutionary tree and were sequenced.The data showed that 8 specimens were Asian variants,E2 gene mutation existed in all the specimens while the LCR 7867 G→A only existed in the four CIN.Conclusion LCR 7867G→A is a correlative mutation site of cervical lesions in Chengdu.

Objective: By analyzing the examination results of physical examination of workers exposed to DMF among 32 factories in some areas of a province, to investigate the working years of dimethylformamide (DMF) poisoning and the impact on the health status of exposed workers, and to explore the targeted intervention strategies. Methods: From February to May 2018, 2, 457 workers exposed to DMF in some areas of Jiangsu Province were selected as survey targets. Cross-sectional survey was conducted to investigate the health status of workers exposed to health, And the health surveillance data, detection data of occupational disease risk factors in the workplace were collected and analyzed, respectively. Results: The positive rate of abnormal liver function and B-ultrasound of males exposed to DMF was significantly higher than that of females. The abnormal rates of liver function, blood pressure and B-ultrasound in workers aged between 60 and 69 were higher in contrast to those in any other age groups. And the differences was statistically significant. In particular, the highest rate of abnormal blood pressure was found in workers exposed 21-30 years (39.2%) , the highest rate of abnormal liver function was found in workers exposed 11-20 years (44.3%) , and the highest rate of abnormal B-ultrasound was found in workers exposed 0-10 years (60.4%) . Conclusion Long-term exposure to dimethylformamide can affect workers’ liver function and blood pressure. Specifically, with the increase of contact age, the degree of chronic damage to liver, cardiovascular and other organs also increases.

OBJECTIVETo assess the association of single nucleotide polymorphisms (SNPs) of ubiquitin-specific protease 8 gene (USP8) with male infertility among ethnic Han Chinese from Sichuan.

METHODSA total of 316 infertile males were recruited (case group), which included 72 severe oligozoospermic (SO) cases and 244 non-obstructive azoospermic (NOA) cases. The control group consisted of 149 fertile males. The genotypes of 4 SNPs (rs2241769, rs11857513, rs7174015 and rs3743044) were determined with a Sequenom MassArray technique. The frequencies of genotype, allele and haploptye were analyzed.

RESULTSNo significant difference was detected in the allelic or genotypic frequencies of the 4 SNPs between the two groups (P>0.05). Based on linkage disequilibrium analysis and haplotype construction, the frequency distribution of haplotype CAAG showed a significant difference between non-obstructive azoospermic patients and the controls (P=0.021).

CONCLUSIONThe 4 SNPs (rs2241769, rs11857513, rs7174015 and rs3743044) of USP8 gene may not be associated with male infertility in ethnic Hans from Sichuan. While the haplotype CAAG may be a down-regulating factor for the risk of NOA.

Adult ; Asian Continental Ancestry Group ; ethnology ; genetics ; Azoospermia ; genetics ; Base Sequence ; Case-Control Studies ; China ; ethnology ; Endopeptidases ; genetics ; Endosomal Sorting Complexes Required for Transport ; genetics ; Genetic Predisposition to Disease ; ethnology ; Genotype ; Humans ; Infertility, Male ; ethnology ; genetics ; Male ; Molecular Sequence Data ; Polymorphism, Single Nucleotide ; Ubiquitin Thiolesterase ; genetics

OBJECTIVETo assess the association of single nucleotide polymorphisms (SNPs) in exons of H2BFWT gene with male infertility in southwest China.

METHODSThree hundred and twelve infertile men and 211 fertile men were recruited. PCR was employed to amplify the target fragments of H2BFWT, and PCR products were sequenced. Prevalence of SNPs in the two groups was analyzed by statistical method.

RESULTSThe detected SNPs have mainly distributed in the first exon of the H2BFWT gene. The ratios of 368G/A (rs553509) and -9C/T (rs7885967) were significantly higher in infertile group than fertile group. Additionally, a context-dependent effect was observed between 368G/A and -9C/T which the allele 368G combined with allele -9T will considerably increase the risk of male infertility.

CONCLUSIONThe present study has revealed that the SNPs in H2BFWT are associated with male infertility, and may increase the susceptibility of male infertility in southwest China.

Adult ; Alleles ; Base Sequence ; China ; Humans ; Infertility, Male ; genetics ; Male ; Polymorphism, Single Nucleotide ; Young Adult

OBJECTIVETo establish a primed in situ labeling (PRINS) technique which can be more effective in detection of single copy gene.

METHODSOn the basis of traditional PRINS, new reagents and procedures, such as TaqStart antibody, four primers of the sex determining region Y (SRY) gene and TSA(TM) Biotin System were included in detection of the SRY gene. Meanwhile, fluorescence in situ hybridization(FISH) to detect the SRY gene was used as control.

RESULTSFifty metaphases were scored. PRINS labeling showed signals for the SRY on the Y chromosome at band Yp11.3 in all metaphases. These signals were as distinct as that from results of FISH.

CONCLUSIONThis improved method is ideal for rapidly localizing single copy genes and small DNA segments. And PRINS is a cost- and time-effective alternative to FISH.

Gene Dosage ; Genes, sry ; genetics ; Humans ; In Situ Hybridization, Fluorescence ; Male ; Metaphase ; genetics ; Primed In Situ Labeling ; methods

OBJECTIVETo rapidly detect SOX2 gene using primed in situ labeling (PRINS).

METHODSHuman peripheral blood samples were cultured using an optimized method. Sequence of the SOX2 gene was amplified in situ with biotin-labeled specific primers and processed with a tyramide signal amplification (TSA) biotin system. Subsequently, fluorescence-stained signal was detected by streptavidin-Texas red. For the control group, MCF-10F cells were transfected with Lentivirus hSox2.

RESULTSBy VideoTesT-FISH software analysis, the long arm of chromosome 3 in the experimental group showed a specific red fluorescence signal, whilst the control samples showed no specific signals for SOX2. Transfected MCF-10F cells showed various efficiency of SOX2 gene integration.

CONCLUSIONPRINS utilizes a highly sensitive in situ PCR technique combined with fluorescence labeled oligodeoxynucleotides can synthesize probes in situ, thus greatly reducing the cost of probe and time for detection. It can facilitate identification and classification of induced pluripotent stem cells, and has many potential applications in this prospect.

Humans ; In Situ Hybridization, Fluorescence ; methods ; Male ; Primed In Situ Labeling ; methods ; SOXB1 Transcription Factors ; chemistry