Objective To investigate the clinical effect of laser in situ keratomileusis(LASIK) for treatment of different degrees myopia.Methods According to the degree of myopia and astigmation,patients were divided into group A(-10.00D),and LASIK was performed in them with Schwind Esiris,a small,flying-spot excimer laser.Results At three months,it was found that 99.47% of the eyes in group A,82.93% in group B and 52.63% in group C had the uncorrected visual acuity of 1.0 or more;100% in group A,97.56% in group B and 89.47% in group C and 0.5 or more.Refractive degrees was stable between 1 to 3 months.No eyes lost more than 2 lines of BCVA.No severe complications occurred.Conclusion Using LASIK to treatment different degree myopia is secure,effective and divinable,especially in the group of mild-midder myopia.

Objective To set quality goals of conventional biochemical tests through the research of biological variation of the 32 routine items in Chinese population to provide the basis for Chinese clinical and laboratory standards.Methods According to the experimental designs and computing methods from foreign counterparts,the results of biological variation,individual indexes and quality goals were calculated through the serum detection of 22 subjects from clinical laboratory of Zhongshan Hospital in Shanghai (male 12,female 10,ages varying from 20 to 40 years old,median age 30) in short-term (five blood draws within one day at 8:00,10:00,12:00,14:00 and 16:00) and long-term (one blood draw at 8:00 in 6 weeks consecutively) and serum controls (mixed from healthy people).Results (1) Based on the results of shortterm and long-term biological variation in 32 routine itens,the individual indexes and quality goals were obtained.(2)The influence of diet on the biological variation of part of the test items could be observed,especially free fatty acid (the mean value of post-meal was less than pre-meal about 30％),and then followed by high-sensitivity C-reactive protein (the mean value of post-meal was lower than pre-meal about 20％) and triglyceride (the mean value of post-meal was higher than pre-meal about 10％).(3)There were some differences between the quality goals we accessed and the the indicators from Europe and CLIA.Conclusions (1)The results of apolipoprotein E and free fatty acid in this study made up for the inadequate of the European biology database.(2) Only a small part of the 32 routine items were affected by dietary factors.(3) Most quality goals obtained from this study generally consisted with Europe biology quality goals,but a few items existed different.(4)It's more practical and effective to use the results of biological variatiou than CLIA standards for setting up quality goals.

Objective To explore the predictive value of Kinetics of white blood cell (WBC) elimination following induction chemotherapy for eider with acute myeloid leukemia(AML). Methods 71 elder with AML were reviewed. Chi-square and the Kaplan-Meier methods were used to identify the relationship between the nadir WBC count and time to WBC nadir with efficacy and survival. Results 28 patients (39.44%) achieved a complete re-mission(CR),another 19 (26.76%) had a partial remission,17(23.94%) patients had a non-remission,and 7 pa-tients(9.86%)died. Overall survival over 3 years was about 11.27% (8 cases),over 2 years about 23.94 % (17 cases),and over 1 years about 47.89 % (34 cases). The low WBC nadir and high WBC nadir in the bone marrow CR (9.86% and 12.68%)and the total survival rate (8.45% and 11.27%)were lower than the median absolute WBC nadir (16.90%, 15.49%), but were no statistical discrepancy (χ23.32,1.22, P=0.77, 0.54). The pa-tients who achieved WBC nadir in less than or equal to 10 days in the bone marrow CR(12.68%) and the total sur-vival rate(8.45%) were statistical significantly higher than those achieved it in greater than 10 days(26.76%). The patients whose WBC attained at low level less than or equal to 3 days in the bone marrow CR(16.90%) and the total survival rate(12.68%) were statistical significantly higher than those greater than 3 days (22.54%) (χ2 15, 57,11.71,4.85,9.54,P=0.001,0.01,0.03,0.04). Conclusion WBC nadir in loss than or equal to 10 days and WBC attained at low level greater than 3 days may serve as a worse prognosis.

Objective To establish the reference interval for CA 72-4 in indirect method.Methods All results for CA72-4 that were stored in our laboratory information system of Zhongshan hospital between Jan.2010 and Dec.2012 were included in this study.Outliers were identified and omitted using Stem-and-Leaf&Box Plots in SPSS statistical software.The treated data was divided into several groups according to gender and age.Nonparametric rank sum test was used to observe the difference between male and female participants and Spearman correlation analysis was used to examine the correlation between CA 72-4 and age.Nonparametric reference intervals for CA 72-4 were estimated statistically in two gender sub-groups.Results After 139 cases excluded, there were 1 548 cases of male (Median 1.7, 0.4 to 18.9) and 773 cases of female ( Median 1.8, 0.2 to 18.9 ).There was a significant difference in serum CA 72-4 between male and female participants.No significant difference was found in serum CA 72-4 among age sub-groups.Indirect reference values for CA 72-4 of male and female were respectively 0 to 8.9 U/ml and 0 to 11.6 U/ml.Conclusion Indirect method to establish biological reference interval is a relatively simple and less expensive method under the high rapid development of the hospital information network .It can be used in the periodical review and establishing the reference intervals where the direct method can not be used.

Objective We are going to establish a robust liquid chromatography-tandem mass spectrometric(LC-MS/MS) method for plasma aldosterone assay.Methods 324 healthy individuals were enrolled in Zhongshan Hospital from February to April in 2016 for reference interval survey.The signallinearity,lower limits of quantitation,precision and accuracy of LC-MS/MS have been evaluated.Results from LC-MS/MS and RIA methods were compared.Software SPSS17.0 software was used for statistical analysis.Results The performance characteristics for the method in terms of linearity,lowerlimits of quantitation,precision and accuracy were verified.Linear range of ALD were between 25-2000 pg/ml;the LC-MS/MS assay had a limit of quantitation of 20 pg/ml for ALD;the intra-and inter-assay CV of ALD were ＜10％ and ＜6％,respectively;the recovery of ALD from serum samples ranged between 97.3 and 105.8％ The reference value of ALD in health people ranged between 21-211.6 pg/ml The regression equation by LC-MS/MS (X) and RIA (Y) was:Y =0.271X + 138.900(r=0.43;n=322).Conclusion LC-MS/MS method is robust and reliable for the analysis of aldosterone in plasma and suitable for clinical application.

The graft-versus-tumor (GVT) effect of T cells induced by tumor antigen-pulsed CD8α(+) dendritic cells (DCs) in vitro was investigated in this study. Immature CD8α(+) DCs were prepared from C57BL/6 (H-2(b)) bone marrow cells by using a cytokine cocktail. On the 3rd day of culture, CD8α(+) DCs were pulsed by allogeneic (Balb/c, H-2(d)) EL9611 leukemia antigen, or RM-1 syngeneic prostate cancer antigen, with the concentration series of 0, 2.5, 5.0, 10.0, 20.0 μg/mL, respectively, then antigen-loaded immature CD8α(+) DCs were co-cultured with syngeneic T cells according to the DC/T ratio of 1:1, 2:1 and 4:1. T cell proliferation was measured by MTT assay. Cytokines including interferon gamma (IFN-γ) and interleukin-10 (IL-10) in CD8α(+) DCs and T co-culture supernatant were detected by using ELISA. Cytotoxic effect of antigen-specific T cells was tested by LDH release assay. Conventional mature DCs (mDCs) induced from C57BL/6 (H-2(b)) bone marrow cells by using granulocyte-macrophage colony stimulating factor (GM-CSF) and interleukin-4 (IL-4) served as a control. The results showed that the proliferative activity of T cells stimulated by CD8α(+) DCs loaded with allogeneic or syngeneic tumor antigen was augmented with the CD8α(+) DC/T ratio increased (P<0.05). When antigen concentration ≤ 5 μg/mL and CD8α(+) DC/T ratio ≤ 2:1, the ability of CD8α(+) DCs to stimulate T cell proliferation was higher than mDC control in allogeneic tumor antigen-pulsed groups (P<0.05), but not in syngeneic tumor antigen-pulsed groups (P>0.05). The level of IFN-γ and IL-10 in CD8α(+) DCs and T cell co-culture supernatant were increased in both allogeneic and syngeneic antigen-pulsed groups (P<0.05), and the cytokine level was higher in allogeneic antigen-pulsed groups than in syngeneic antigen groups when the CD8α(+) DC/T was 1:1 or 2:1 (P<0.05). There existed a negative correlation between the level of IL-10 and T cell proliferation. T cell cytotoxicity assay showed that when CD8α(+) DCs were pulsed with allogeneic tumor antigen, the maximal T cell killing efficiency could reach (100±7.7)%, whereas syngeneic tumor antigen-pulsed group had only (65.0±3.4)%. It was concluded that syngeneic and allogeneic tumor antigen-pulsed immature CD8α(+) DCs could stimulate T cells to exert the GVT effect in vitro, and the GVT effect was more obvious with allogeneic tumor antigen than with syngeneic tumor antigen. The optimal condition was low allogeneic tumor antigen pulsation (≤ 5 μg/mL) and low CD8α(+) DC/T ratio (1:1 and 2:1).

Objective:To investigate the clinical characteristics of acute myeloid leukemia with BCR-ABL p210 fusion gene-positive.Methods:The clinical characteristics of a patient diagnosed in the Second Hospital of Jiaxing were analyzed and the related literature was reviewed.Results:BCR-ABL p210 fusion gene and Philadelphia chromosome (Ph) were detected by reverse transcription-polymerase chain reaction (RT-PCR) and fluorescence in situ hybridization (FISH). Imatinib associated with multi-drug intravenous chemotherapy resulted in poor efficacy.Conclusions:Patient with Ph +/BCR-ABL + acute myeloid leukemia is rare with a very poor prognosis. There is no unified standard treatment and the efficacy of tyrosine kinase inhibitors is unclear. Intravenous chemotherapy combined with hematopoietic stem cell transplantation is expected to change the prognosis.

The graft-versus-tumor (GVT) effect of T cells induced by tumor antigen-pulsed CD8α+dendritic cells (DCs) in vitro was investigated in this study.Immature CD8α+ DCs were prepared from C57BL/6 (H-2b) bone marrow cells by using a cytokine cocktail.On the 3rd day of culture,CD8α- DCs were pulsed by allogeneic (Balb/c,H-2d) EL9611 leukemia antigen,or RM-1 syngeneic prostate cancer antigen,with the concentration series of 0,2.5,5.0,10.0,20.0 μg/mL,respectively,then antigen-loaded immature CD8α+ DCs were co-cultured with syngeneic T cells according to the DC/T ratio of 1∶1,2∶1and 4∶1.T cell proliferation was measured by MTT assay.Cytokines including interferon gamma (IFN-γ)and interleukin-10 (IL-10) in CD8α+ DCs and T co-culture supernatant were detected by using ELISA.Cytotoxic effect of antigen-specific T cells was tested by LDH release assay.Conventional mature DCs　(mDCs) induced from C57BL/6 (H-2b) bone marrow cells by using granulocyte-macrophage colony　stimulating factor (GM-CSF) and interleukin-4 (IL-4) served as a control.The results showed that the　proliferative activity of T cells stimulated by CD8α+ DCs loaded with allogeneic or syngeneic tumor antigen was augmented with the CD8α+ DC/T ratio increased (P＜0.05).When antigen concentration ≤ 5μg/mL and CD8α+ DC/T ratio ≤ 2∶1,the ability of CD8α+ DCs to stimulate T cell proliferation was　higher than mDC control in allogeneic tumor antigen-pulsed groups (P＜0.05),but not in syngeneic tumor antigen-pulsed groups (P＞0.05).The level of IFN-γ and IL-10 in CD8α+DCs and T cell co-culture　supernatant were increased in both allogeneic and syngeneic antigen-pulsed groups (P＜0.05),and the　cytokine level was higher in allogeneic antigen-pulsed groups than in syngeneic antigen groups when　the CD8α+DC/T was 1∶1 or 2∶1 (P＜0.05).There existed a negative correlation between the level of　IL-10 and T cell proliferation.T cell cytotoxicity assay showed that when CD8α+ DCs were pulsed with　allogeneic tumor antigen,the maximal T cell killing efficiency could reach (100±7.7)％,whereas syngeneic tumor antigen-pulsed group had only (65.0±3.4)％.It was concluded that syngeneic and allogeneic tumor antigen-pulsed immature CD8α+ DCs could stimulate T cells to exert the GVT effect in vitro,and the GVT effect was more obvious with allogeneic tumor antigen than with syngeneic tumor antigen.The optimal condition was low allogeneic tumor antigen pulsation (≤ 5 μg/mL) and low CD8α+ DC/T　ratio (1∶1 and 2∶1).

Objective:To verify the performance of the next-generation sequencing (NGS) platform and evaluate the application of NGS, droplet digital PCR (ddPCR) and super amplification refractory mutation system (super-ARMS) in the detection of circulating free DNA (cfDNA) mutations in patients with non-small-cell lung cancer (NSCLC).Methods:A total of 75 patients with NSCLC in the respiratory department of Zhongshan Hospital Affiliated to Fudan University were enrolled. The standards, cfDNA from 25 patients with newly diagnosed and untreated NSCLC, and self-made mixed samples mixed with hemoglobin (1 000 mg /dl), bilirubin (500 mg/l), fat emulsion (2%), enterococcus gDNA and Escherichia coli gDNA were used to verify the blank limit, analytical sensitivity, precision, accuracy and specificity of NGS platform. The cfDNA mutations of 75 NSCLC patients were detected by ddPCR and NGS, and the mutation positive rates of the two platforms were compared. The linear relationship between the two platforms was compared by Pearson correlation test. 12 patients were selected by simple random sampling for the detection of plasma super-ARMS platform. The performance of three platforms in the detection of plasma cfDNA mutation in patients with NSCLC was compared.Results:The blank limit of NGS platform was set to 0.00%, the analytical sensitivity was 0.2%, the intra-assay precision and inter-assay precision were 100%. The test results were not affected by endogenous hemoglobin, bilirubin or fat emulsion in plasma or exogenous DNA interference, and the analysis specificity was good. The mutation positive rates of plasma cfDNA in 75 NSCLC patients detected by ddPCR and NGS were 61.33% and 60.00%, respectively. The complete coincidence rate was 89.33%, which suggests there was a positive correlation between the mutation abundance of NGS and ddPCR ( r=0.984, P=0.001). Among the plasma of 12 NSCLC patients, the results of NGS, ddPCR and super-ARMS were completely consistent in 7 cases, including 2 wild-types and 5 mutants. Conclusion:The NGS platform was verified to be useful for cfDNA mutation detection in patients with NSCLC. The ddPCR, NGS and super-ARMS have their own advantages in detecting cfDNA mutations in patients with NSCLC.

Objective:To explore the risk stratification and prognostic significance of loss of chromosome Y (LOY) in patients with multiple myeloma (MM).Methods:The clinical data of 193 male patients with newly diagnosed MM admitted to Zhongshan Hospital of Fudan University from January 2018 to January 2020 were analyzed retrospectively and divided into a normal karyotype group(178) and a LOY karyotype group (15) according to the results of their primary conventional cytogenetics. Rank sum test, 2×2 chi-square test and independent sample t-test were used to compare laboratory findings, such as liver and kidney function, immunohistochemistry and cytogenetics, treatment efficacy and survival prognosis, between the two groups. The clinical prognostic significance of LOY was summarized through survival analysis and Cox regression. Results:Among the newly diagnosed male MM patients, 8%(15/178) were confirmed with LOY cases. The proportion of patients with Revised International Staging System(R-ISS) stage Ⅲ was significantly higher in the LOY group (8/15) than that in the normal karyotype group (40/178)(χ 2=7.052, P<0.01). A higher proportion of 1q21 amplification also occurred in the LOY group (10/13 vs 77/162)(χ 2=4.159, P<0.05). The proportion of complete response(CR)/stringent complete response(sCR) in the normal karyotype group after the fourth chemotherapy (63/171) was significantly higher than that in the LOY group (1/15)(χ 2=5.564, P<0.05). The proportion of progressive disease (PD) was lower in the normal karyotype group (16/171 vs 4/15) (χ 2=4.306, P<0.05). The 2-year progression-free survival (PFS) of MM patients for the LOY group was significantly shorter compared to that for the normal karyotype group ( Z=?3.201, P<0.01). Univariate survival analysis showed that PFS was significantly shorter in newly diagnosed MM patients with Creatinine(Cr)≥93 μmol/L, β 2-microglobulin (β 2-MG)≥4.0 mg/L, serum free light chain(sFLC)<0.06, bone marrow plasma cells (BMPC)≥30%, R-ISS stage Ⅲ, failure to achieve CR/sCR after the fourth chemotherapy, with LOY, 1q21 amplification, P53 deletion and t(4;14) ( P<0.05). Cox regression analysis showed that Cr≥93 μmol/L( HR=4.460, 95% CI 1.615-12.314, P=0.004), sFLC<0.06( HR=2.873, 95% CI 1.206-6.849, P=0.017), failure to achieve CR/sCR after the fourth chemotherapy( HR=3.522, 95% CI 1.437-8.634, P=0.006)and with LOY( HR=3.485, 95% CI 1.473-8.249, P=0.006)were independent risk factors for PFS in newly diagnosed MM patients. Conclusions:LOY is an independent risk factor for poor prognosis. It is important for the clinical outcome and prognosis of patients with newly diagnosed MM, and may become a novel clinical assessment indicator.