Objective To investigate the diagnostic value of the single detection and combined detection of Epstein-Barr virus (EBV) VCA-IgM ,aspartate transaminase (AST) and alanine transaminase (ALT) in EBV current infection .Methods The VCA-IgM positive simples tested by chemiluminescence from January to October 2016 were collected .EBV-DNA was detected by RT-PCR .AST and ALT were detected by using the enzyme rate method .Then samples were divided into the EBV-DNA positive group and EBV-DNA negative group .SPSS22 .0 was used for conducting the non-parametric test .Then each indicator was analyzed by the Logistic regression and receiver operating characteristic (ROC) curve .Results The levels of VCA-IgM ,AST and ALT in the EBV-DNA positive group were higher than those in the EBV-DNA negative group ,the difference was statistically significant (P<0 .05) . VCA-IgM ,AST and ALT showed a correlation with EBV-DNA (P<0 .05) .The areas under curve (AUC) of VCA-IgM ,AST and ALT single indicator detection curve were 0 .803(95% CI:0 .735 -0 .872) ,0 .788(95% CI:0 .708 -0 .868) ,and 0 .752(95% CI:0 .671-0 .832) ,respectively ;AUC of 3-indicator combined detection were 0 .830(95% CI:0 .765 -0 .896) ,which was high than AUC of each single indicator detection .Conclusion Among the indicators in EBV current infection ,VCA-IgM is of great diagnostic value ,and is superior to AST or ALT .Furthermore ,the combined detection of these three indicators is better than single indicator detection ,which contributes to the diagnosis and prevention of EBV infection and other complicating infection .

Objective To explore the application value of interferon gamma release assay (IGRAs)in the clinical detection of tuberculosis infected T lymphocytes.Methods Used IGRAs method to detect the 11 968 outpatients and hospitalized pa-tients from 2013 to 2016 with tuberculosis screening.According to the distribution department analysis,also of positive case detection according to age and gender were analysis and comparison and analysis on the uncertainty of results,different methods were compared.Results Among the 11 968 cases,2 048 cases were positive,the positive rate was 17.11%,and the uncertain result was 107 cases,which accounted for 0.89% of the total number.The positive rates from 2013 to 2016 were 19.65%,21.35%,15.82% and 13.56%,respectively.In the detection and screening of pulmonary and pulmonary tuberculo-sis,the positive rates of the department of respiration,the digestive department,the oncology department,the department of neurology and the department of gynecology were 22.07%,20.27%,23.38%,12.84% and 11.86%,respectively.In the positive screening,men accounted for 62.11%,women accounted for 37.89%,men were significantly higher than women.By age group,was less than or equal to 15,16~25,26~45,46~65,was more than orequal to 66 years old,positive rate were 1.96%,18.51%,16.54%,21.25% and 25.73%,respectively.Analysis of uncertain outcome data,department of respira-tion,rheumatism,department of hematology,accounted for 1.99% and 2.35%,respectively.Compared with other laboratory methods,the IGRAs method had obvious advantages.Conclusion Tuberculosis occurs in various body organs,there were differences in gender and age of Mycobacterium tuberculosis infection.IGRAs is a sensitive and specific method for rapid de-tection of Mycobacterium tuberculosis infection,although it can not be used as a diagnostic indicator,but in patients with suspected tuberculosis IGRAs has a larger clinical application value for the further diagnosis of disease.

Objective Our preliminary study demonstrates that quercetin can inhibit the proliferation of HL-60 cells. This sudy aimed to find some drugs which could have synergistic effects with quercetin on apoptosis of HL-60 cells. Methods HL-60 cells were cultured with bortezomib at different concentrations (1, 2, 4, 8, 16, and 32μmol/L) alone or combined with quercetin at different concentrations for 48 h. HL-60 cells were cultured with lenalidomide at different concentrations (5, 10, 20, 40, 80, 160, and 320 μmol/L) alone or in combination with quercetin at different concentrations for 48 h. The CCK-8 assay was used to determine the effects on proliferation of HL-60 cells. Results Bortezomib significantly inhibited the proliferation of HL-60 cells (P<0.01). IC50 of quercetin was 49.24μmol/L after cells treated by quercetin combined with bortezomib, which was 13.44μmol/L lower than that treated by quercetin alone. Isobolographic analysis revealed the two drugs had synergistic effect. The results of cell viability of HL-60 cells treated by lenalidomide at lower concentrations (5, 10, 20, 40, and 80μmol/L)were not different from those of the control group (P > 0.05). The results of cell viability of HL-60 cells treated by lenalidomide at higher concentrations (160 and 320μmol/L) were lower than those of the control group (P<0.05). IC50 of quercetin after cells treated by quercetin combined with bortezomib was not different from that treated by quercetin alone. Isobolographic analysis revealed the two drugs had no synergistic effect. Conclusions Bortezomib can inhibit the proliferation of HL-60 cells and it has a synergistic effect with quercetin on HL-60 cells. Lenalidomide has a weaker role in inhibition of the proliferation of HL-60 cells, and it has no synergistic effect with quercetin on HL-60 cells.

Objective To verify the performance of LIAISON chemiluminescence immunoassay analyzer in the prenatal screening for TORCH .Methods Reference to the US Institute of Clinical and Laboratory Stand-ards(NCCLS) series of documents and literature and combining with actual work ,we designed the verification program ,and tested and evaluated the LIAISON chemiluminescent immunoassay systems for the measurement precision ,accuracy ,linearity analysis ,clinical reportable range and biological reference intervals of Tox IgG , Tox IgM ,Rub IgG ,Rub IgM ,CMV IgG ,CMV IgM ,HSV IgG ,HSV IgM .We also compared the results with analysis performance provided by manufacturers (Italy LIAISON ) or recognized quality indicators .Results Intra-assay imprecision CV values were between 3 .58％ -7 .03％ ,which were less than the predetermined range;inter-assay imprecision CV values were between 3 .13％ -10 .73％ .Linear range validation regression coefficients a values were between 0 .97 -1 .03 and r2 >0 .95 .The linear relationship met the requirements . Both biological reference interval and reportable range meet the requirements .Conclusion The performance of LIAISON chemiluminescence immunoassay detection system satisfied the clinical requirements ,and the meas-urement results had advantages of high sensitivity ,specificity ,stability ,wide detection range ,good accuracy and repeatability ,which was suitable for clinical application .

Objective:To investigate the prevalence, risk factors and outcomes of diastasis recti abdominis (DRA) in multiparas after the second delivery.Methods:From June 2017 to September 2019, 300 multiparas with an average age of (31.7±4.0) years (26 to 43 years) after the second delivery were recruited at 6 weeks postpartum from two hospitals in Wenzhou. There were 171 multiparas with two natural births,36 multiparas with one natural birth and one caesarean delivery, and 93 multiparas with two caesarean deliveries. The interrectus distance (IRD) was measured with palpation at 6 weeks, 6 months and 12 months after delivery. Data on age, height, weight before pregnancy and delivery, baby′s birth weight, abdominal circumference before pregnancy and delivery, fetus number, delivery mode and occupation type were collected. Strength and endurance of abdominal muscle was assessed using manual muscle testing and curl-ups, low back pain was assessed using Oswestry disability index(ODI), urinary incontinence was assessed with International Consultation on Incontinence guestionnaire-incontinentia urinae (ICIQ-UI) short form (ICIQ-SF), and quality of life was assessed using 36-item short form health survey (SF-36).Results:Prevalence of DRA was 51.7%(155/300), 39.3%(116/295) and 27.7%(80/289) 6 weeks, 6 months and 12 months after delivery, respectively. Logistic regression analysis indicated that age ( OR=1.39, 95 %CI:1.02-1.91, P=0.38), abdominal circumference ratio ( OR=2.31, 95 %CI:1.23-4.33, P=0.01), twins ( OR=11.41, 95 %CI:2.15-60.76, P<0.01), and cesarean section ( OR=1.44, 95 %CI:1.06-1.95, P=0.02) were the risk factors of DRA at 12 months after delivery. At 12 months after delivery, the multiparas with DRA had weaker strength and endurance of abdominal muscle ( Z=-3.62, P<0.01; Z=-8.91, P<0.01), more serious low back pain ( Z=-2.10, P=0.04), and lower quality of life on physical health ( t=-3.34, P<0.01) than the multiparas without DRA. No difference in prevalence and severity of urinary incontinence and quality of life on psychological health was found when comparing multiparas with and without DRA (χ 2=0.66, P=0.42; Z=-1.18, P=0.24; t=0.91, P=0.36). Conclusion:Multipara after the second delivery has great likelihood for DRA.Age, abdominal circumference ratio, twins, and cesarean section are the risk factors of DRA. DRA is related to abdominal muscle dysfunction, low back pain, and quality of life.

Objective:To analyze the administration of rabies immunoglobulin (RIG) in populations who had rabies virus exposure, and to investigate the safety of RIG and related factors affecting its administration.Methods:This cross-sectional study included the rabies virus exposed victims who were treated at the sixth medical center of the People’s Liberation Army (PLA) General Hospital from April to November 2019. The clinical characteristics of the patients who accepted RIG injection and those who refused RIG were analyzed and compared, and the determinant factors of the RIG injection were studied by stepwise multiple logistic regression analysis.Results:There were 1 395 cases of category III exposure, of whom 662 (47%) were males, 733 (52.5%) were females. The median age was 29 (9-49) years. Among them, 1 049 cases were injected with RIG, while 346 were not injected with RIG. Side effects associated with RIG injection included pain (97.6%), dizziness (7.0%), nausea (6.5%), chest tightness (2.1%), and syncope (0.3%). Stepwise multiple logistic regression analysis showed that adults ( OR=17.14, 95% CI: 9.69-30.32), middle-aged and elderly ( OR=12.92, 95% CI: 6.83-24.43), and those whose injury was caused by cats ( OR=3.18, 95% CI: 2.09-4.84), scratches ( OR=7.66, 95% CI: 4.27-13.75), those with minor injuries ( OR=21.75, 95% CI: 11.70-40.42) more likely to choose not to inject RIG. Conclusions:It is safe and effective to inject RIG for patients with grade III exposure to rabies virus. Exposed persons who are not injured by dogs, slightly injured and elderly people tend not to inject RIG.

Objective:To analyze the metabolic status of forest encephalitis patients, research the effect of forest encephalitis on lipid metabolism, and clarify the possible pathogenesis.Methods:Based on liquid chromatography-mass spectrometry (LC-MS), lipidomics analysis was performed in 50 patients with tick-borne encephalitis and 39 healthy samples from Hulunbuir region. The patients′ serum samples were analyzed by utilizing the multivariate statistical analysis method such as principal component analysis (PCA) and orthogonal partial least squares-discriminant analysis (OPLS-DA).Results:A total of 465 peaks were detected in the samples, and metabolites such as phospholipids and glycerides were identified. To identify the significant differential metabolites ( P<0.01, VIP>1, FC>2), a total of 26 biomarkers were screened, which phospholipids tend to be upregulated[log 2(Fold change)>0], such as phosphatidylcholine (PC) and phosphatidylethanolamine (PE); while glycerides tend to be decreased[log 2(Fold change)<0], such as diacylglycerol (DAG) and triacylglycerol (TAG), and those metabolites were closely related to anti-inflammatory and other metabolic pathways. The AUC value of potential biomarkers obtained was 0.999, which could be used for diagnosis of disease group and healthy group. Conclusions:The study showed that phospholipid metabolism and glyceride metabolism pathways would have some change after human infected by virus, and the differential metabolites could be used as potential markers for the diagnosis of tick-borne encephalitis, which provide a theoretical basis for disease research.