Objective To assess overall diagnostic value of SELDI-TOF-MS in early breast cancer. Methods To search and identify the relevent articals in English and Chinese from Jan. 1999 to Dec. 2007 on Medline,WeiPu full-text data base and Wan-Fang clara base, and the literatures have been integrated to review the quality rating, and the heterology examination and the meta analysis were conducted. While the summary receiver operating characteristic curve (SROC), pooled sensitivity, specificity and odds rate were calculated by SPSS13.0 software. Results 22 pertinent literatures can be indexed as a whole, of which 8 articles in-cluding 739 samples entered this Meta analysis. The pooled sensitivity, specificity and odds rate were 91.4% ,99.5% and 30.88 re-spectively. The area under the SROC curve was 0. 822 5. Conclusion SELDI-TOF-MS is valuable in diagnosis of ovarian cancer.

Objective To investigate the distribution and the characteristics of drug resista-nce of coagulase negative Staphylococcus,and to provide the reference for properly choosi-ng antibiotic therapy of coagulase negative Staphylococcal infecs.Methods Contrasted 484 coagulase negative Staphylococcus(CNS) species isolated in hospital from 2001 to 2003 and 512 species from 2004 to 2007.Nosocomial CNS was identified and then drug resistance test was performed by K-B method,Nitrocefin method was utilized to detect β-lactamase.Clinical and Laboratory Standards Institute.Perfor-mance Standards forantimicro-bial susceptibility testing;Fifteenth information supplement.CLSI/NCCLS document M100-S17[J].Clinical and Laboratory Standards.Results The drug-resistant rate of.CNS to penicillin,erythromycin,oxacillin,amoxicillin/clavulanate,clindamycin,cepzolin,ceftriaxone and cefepime was high(>70%),whereas that to rifampin,nitrofurantoin,amikacin,tetracycline and trimetholvrim/sulfamethoxazole was low(<50%).No drug-resistant CNS strains to vancomyein were found.Conclusions,and no outstanding imparity from two groups.Conclusion The patterfi of resistance has changed greatly in the past 3 years.Clinical physicians should pay attention to properly choosing and using antibiotics.

Objective To investigate.the co-stimulatory pathway of gastric cancer patients by examining the expression of co-stimulatory molecules CD28,CTLA.4(CDl 52)and B7 molecules on peripheral blood lymphocytes(PBLC)in patients with gastric cancer,and to discuss the role of costimulatory pathway in the pathogenesis of gastric cancer.Methods The expression of CD28,CD152,CD3,CD4,CD8 and B7 molecules on peripheral blood lymphocytes and T cell subpopulation were measured by flow cytometry in 56 patients with gastric cancer,and the data was compared and analyzed with that in gastric benign tumor group and healthy control group.Results The expression levels of CD3+,CD4+,CD3+ CD28+,B7-1(CD80),B7-2(CD86)and CD41/CD8+on PBLC in patients with gastric cancer was significantly lower than that of benign stomach tumor group and healthy control group.The expression levels of CD3+ CDl52+ and CD8+ on PBLC in patients with gastric cancer were significantly higher than those of gastric benign tumor group and healthy control group.Conclusion Peripheral lymphocytcs in gastric cancer patients express low level of CD28 and B7 molecules and high level of CDI 52 molecules,which results in dysfunction of B7:CD28/CTLA-4 co-stimulation pathway and in turn affects the capacity of T cell to eliminate tumor cells,which makes tumor cells evading the immune surveillance and metastasizing.

Objective To summarize the shortage in quality control, so as to strengthen quality control and assure the safety of blood transfusion in clinic by reviewing the status of external quality assessment in ten years. Methods The feedback results, which were from the national and provincial external quality assessment in 1998-2007, were summarized and analyzed. Results The coincidence rate of the national external quality assessment results was 98.6 %;and the coincidence of the provincial ones was 99. 5%. Conclusion There exists detection omission in individual item. It is necessary to ensure the quality of blood, keep strengthening the theoretical and technologic training of in-service staff especially the newcomers, sublime the quality control consciousness of docimasters, establish the rule and methods suitable for individual lab, and to choose the reagents of high quality. Only by establishing consummate quality management and standardizing internal quality control work, can safe blood be offered.

Objective To investigate the role of IgG determination in diagnosis of early renal damage in children with Henoch-schonlein purpura(HSP). Methods Urine IgG was determined in 188 children with HSP (HSP group), 99 patients with Henoch-schonlein purpura nephritis (HSPN group) and 26 healthy controls (healthy control group). Simultaneously, qualitative detection of urine protein was carried out in HSP group. Results The abnormality rate of urine IgG was significantly higher than that of urine protein in HSP group (P<0. 05). The level of urine IgG was significantly higher in HSP group than that in healthy control group (P<0. 05), while the level of urine IgG in group than that in HSP group (P<0. 05). Conclusion Urine IgG determination is simple and nonin-vasive, which if high clinical value in diagnosis of early renal damage in children with Henoch-schonlein purpura(HSP).

Objective To investigate the relationship between serum homocysteine ( HCY) level and cardio/cerebrovascular disease. Methods Serum level of HCY in patients with cardio/cerebrovascular disease was determined by applying enzymatic cycling assay, and the test results were compared with those of 100 normal controls (healthy control group). Results The serum HCY level of cardio/ cerebrovascular disease group was significantly higher than that of healthy control group. Conclusion Hyperhomocysteine (HHCY) is a risk factor for cardio/cerebrovascular disease, and its level is increasing with severity of coronary heart disease (CHD). The types of cerebrovascular disease were not associated with serum level of HCY.

Objective To investigate the change trend for D-dimer,antithrombin activity (AT:A),tissue plasminogen activator(t-PA),plasminogen activator inhibitor-1 (PAI-1)and yon Willebrand factor (vWF) before and after treatment in patients with cerebral infarction,so as to evaluate the clinical value of the above parameters in therapeutic effect monitoring of cerebral infarction.Methotis SYSMEX CA7000 blood coagulation analyzer was applied to determining plasma D-dimer,t-PA,PAI-1 and AT:A,and ELISA was adopted to measure vWF.Results Compared with those of healthy control group,D-dimer,PAI-1 and vWF were significantly increased (P<0.01),t-PA was significantly decreased (P<0.01),and AT:A had no change (P>0.05) in cerebral infarction group before treatment.In cerebral infarction group,compared with those of pre-treatment,D-dimer,PAI-1 and vWF were significantly decreased (P<0.01),t-PA was significantly increased(P<0.01),and AT:A had no change(P>0.05) after treatment.So was the situation between GCS>8 and GCS≤8group.Conclusion There are obvious changes of fibrinolytic system parameters and vWF level befor and after treatment in patients with cerebral infarction,and the changes are associated with the course of disease.

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 investigate the change of serum cystatin C(Cys-C)in different stage of renal impairment in type 2 diabetic patients and evaluate the diagnostic value of serum Cys-C at early renal impairment in type 2 diabetes.Methods The level of serum cystatin C was detected by particleenhanced immunonephelometry in 137 patients with type 2 diabetes mellitus(including 78 cases of diabetic nephropathy).Urinary albumin excretion rate(UAER),serum albumin,creatinine,blood urea nitrogen (BUN) were detected at the same time,and then the glomerular filtration rate (GFR) were calculated by MDRD equation.Results There was significant difference in serum level of Cys-C between normal albuminuria group and microalbuminuria group (P<0.05),and the latter was significantly different from macro-albuminuria group in serum level of Cys-C(P<0.01).The serum cystatin C in both micro-albuminuria group and macro-albuminuria group was significantly correlative to the glomerular filtration rate (P<0.01).Conclusion Serum cystatin C can be used as a marker in early renal impairment in type 2 diabetes mellitus.

Objective The investigate the clinical significance of serum anti-thyroid peroxidase antibody(TPOAb)monitoring in therapeutic effect judgment and prognosis evaluation during 131I treatment in patients with Graves disease.Methods A total of 112 patients with Graves disease(hyperthyroidism group)and 50 healthy controls(healthy control group)were enrolled in the investigation.Serum concentration of TPOAb was measured with chemiluminescent immunoassay(CLIA)in healthy control group and hyperthyroidism group(at time points of 0,3,6,12 and 24 months after 131I treatment,i.e.T0,T3,T6,T12 and T24).Variance analysis and t test were adopted.Results The mean level of TPOAb was significantly higher in patients with Graves' disease before 131I treatment than that in healthy controls(P＜0.01).In hypenthyroidism group,serum concentration of TPOAb was evidently higher at T3[(108.94±70.15)IU/mL]than T0[(81.95±47.64)IU/mL](P＜0.01);TPOAb level began to decline at T6[(42.78±28.68)IU/mL],but still higher than that of healthy control group;while where was no statistical difference in TPOAb level between hyperthyroidism group at T24[(7.89±4.01)IU/mL]and healthy control group(F＞0.05).Conclusion Serum level of TPOAb before treatment may be used as an auxiliary indicator of 131I dosage.Posttreatment TPOAb level monitoring contributes to therapeutic effect evaluation,follow-up visit and immunorcaction state understanding.