Objective To evaluate the clinical significance of serum thyroglobulin autoantibody(TGAb) in thyroglobulin(TG)-negative and TGAb-positive patients with differentiated thyroid carcinoma(DTC)after thyroid ablation and ascertain the optimal operating point(OOP)of TGAb.Methods A total of 169 patients with histologically confirmed DTC and thyroid remnant ablation showed TG-negative and TGAb-positive results which were assessed by electrochemiluminescence immunoassay(ECLIA).The cases were divided into group A(59 cases)and group B(110 cases)with or without evidence of recurrence or metastasis,respectively.The receiver operating characteristic(ROC)curve and positive likelihood ratio of different threshold values were analysed according to their serum TGAb level.Results Serum TGAb level(1368?1343)IU/ml in group A was significantly higher than that(154?539)IU/ml in group B(P1000 IU/ml was 1.12 times that of 204 IU/ml≤TGAb≤1000 IU/ml,4.03 times that of 100 IU/ml≤TGAb

Objective The aim of this study was to evaluate the diagnostic value of thyroglobulin(Tg)mRNA in peripheral blood samples of patients with differentiated thyroid carcinoma(DTC)after remnant ablation.Methods Tg mRNA Was detected by reverse transcription-polymerase chain reaction(RT-PCR)in peripheral blood of 162 patients.SPSS 13.0 was used for date analysis.Results The Tg mRNA assay had higher sensitivity than the conventional serum Tg measurement[86.61%(97/112)vs 53.57%(60/112),X2=29.153,P＜0.001]which Was the"gold standard"for the identification of recurrence or metastases.In the anti-Tg antibodies(TgAb)positive DTC patients,the sensitivity of Tg mRNA was higher than that of serum Tg[86.54%(45/52)vs 0]in identifying recurrent or metastatic thyroid disease(X2=79.322,P＜0.001).There was a significantly positive correlation between Tg mRNA expression and the clinical stages(Kendall correlation coefficient=0.515,P＜0.001).There was no difference of Tg mRNA expression in peripheral blood among ages,sex,pathological types and location of metastases,respectively(Kendall correlation coefficient=0.020,0.069,0.050 and 0.028;all P＞0.05).Conclusions Circulating Tg mRNA is a more sensitive marker than serum Tg in identifying recurrent or metastatic DTC,particulady in patients during levo-thyroxine(l-T4)therapy and with TgAb-positive.The DTC patients who have positive expression of Tg mRNA indicates poor prognosis.

Persisters are a sub-population of bacteria that can survive lethal concentrations of antibiotics.They contribute to recurrent or intractable chronic infections.Persisters can emerge as a result of multiple mechanisms which lead to drug tolerance.Unlike antimicrobial resistance which usually acquires genetic mutation, phenotypes of persisters are non-inheritable.Despite the distinct difference between persistence and resistance, recent studies have demonstrated that not only persistence can be observed in resistant mutants, but also persisters themselves can be regarded as an intermediate state which promotes the emergence of resistance.This review focuses on mechanisms of drug tolerance in persisters, phenomena of persistence in antimicrobial resistant bacteria and possible mechanisms of the conversion of persisters to resistant bacteria.Moreover, future research directions are also prospected is this review.

The chromatograms of pyrolysis gas chromatography (PGC) of fifteen strains of Salmonella typhi were reported to see if there is any possible relation of the graphs to serological typing and drug-resistance spectra of the bact. In the fifteen strains there were fourteen clinical strains and one reference strain (Hg01). The results indicated that the clinical strains might be divided into group A and B (7 strains each) by PGC. The graphs drawn from group A organisms were entirely the same in shape while those of group B showed only basic similarity. According to the diversity of graphs of group B organisms, the group B organisms, may be subdivided into group B1 (4 strains), B2 (2 strains) and B3 (1 strain). The graphs within each subgroup were completely the same and those of subgroup B1 exhibited close similarity to that of the reference strain. Albeit no regular connection of chromatograms with serological types and drug-resistance could be seen, the graphs yet provided useful reference for founding a bank of chromatograms, compaed with which salmonella typhi graph could then be identified.

Animals ; Calcium ; metabolism ; Cell Line ; Cricetinae ; Cricetulus ; Dose-Response Relationship, Drug ; Fibroblasts ; drug effects ; metabolism ; Vehicle Emissions

Objective To explore the clinical effect of posterior pedicle screw internal fixation in the treatment of multiple level noncontiguous thoracolumbar fractures.Methods Thirteen patients with multiple level noncontiguous thoracolumbar fractures were treated by posterior pedicle screw internal fixation.The Frankel score,percentage of vertebral compression and Cobb angle of the injured vertebral segment were analyzed to evaluate the surgery efficacy.Results All patients were followed up from 12 to 24 months ( averaged 15 months ).All cases achieved bone fusion with no implant failure.The Cobb angle of the injured vertebral segment was corrected from preoperative(22.2 ±5.3) degree to postoperative(5.3 ±3.5) degree and(6.2 ±3.6) degree at the last follow up.The percentage of vertebral compression was corrected from preoperative (45.7 ± 14.1 )％ to postoperative ( 6.1 ± 3.8 ) ％ and ( 7.2 ± 3.9 ) ％ at the last follow up.All improvements showed significant differences when compared statistically( t =15.03,t =12.05,Ps ＜0.05 ).The spinal cord function was improved 1 to 2 degree in all patients except 2 patients of grade A.Conclusion The posterior fixation with pedicle screw is a secure,safe and effective method in treating multiple level noncontiguous thoracolumbar fracture.

The present situation , efficacy, problem and strategy of laboratory animal license management in Guangdong Province were reviewed in this article .The laboratory animal license management has been implemented for 10 years and showed good results .Now there are comprehensive management of quality , facilities, personnel, SOP, and unified item bank, and making standard of laboratory animals in Guangdong Province .The legislation of Guangdong laboratory animal management regulations is completed .Guangdong laboratory animal license is increased year by year .The distribution of industry and area is expanded .Through analysis of problems and search for strategy , Guangdong laboratory animal management will be further developed .

Cancer patients complicated with venous thromboembolism (VTE) face treatment problems, very high recurrence rate and bleeding rate. Cancer itself and the antitumor treatment plan are the important factors causing the recurrence. After the relapse, the prognosis of the patients is extremely bad, and more than 50% of the patients died within 1 year. Until now, there is no unified effective treatment plan for the relapse. This paper reviews the recurrence of VTE and the related research progress.

This study explores the process of introducing ideological and political education elements into oral microbiology teaching, and helps students to establish Marxist practical, epistemological and scientific and technological views, understand the strategic connotation of healthy China in the new era, and establish a sense of responsibility to serve the needs of the country and promote social development. Finally, through the collection of students' feedback, the implementation effect is summarized and the existing problems have been improved in a targeted way.

Background and Objective: The effectiveness rate of all-trans-retinoic acid(RA)is only about 30% in the clinical application of inducing thyroid carcinoma differentiation.In addition,there are severe toxic side effects,which limit its clinical application.Phase Ⅰ-Ⅲ clinical studies have been conducted on the combined application of two or more kinds of inductors in tumors.Nevertheless,the combination of RA with histone deacetylase inhibitors is rarely reported.This article studied the effects of differentiation for papillary thyroid carcinoma and follicular thyroid carcinoma cell lines induced by RA combined with trichostatin A(TSA),enhancing the effect of induction,while reducing the toxic side effects of a single drug,to provide a theoretical basis for preclinical trials.Methods: After incubation with RA combined with TSA,K1 and FTC-133 were grouped into Group 1(RA 1×10-4 mol/L plus TSA 1.65×10-7 mol/L),Group 2(RA 1×10-4 mol/L plus TSA 3.31×10-7 mol/L),Group 3(RA 1×10-5 mol/L plus TSA 1.65×10-7mol/L),Group 4(RA 1×10-5 mol/L plus TSA 3.31×10-7 mol/L)by four varied concentrations and three time points(12,24,and 48 h).The cell proliferation,conformation,toxic effect,and induced differentiation on K1 and FTC-133 cell lines were studied microscopically with hematoxylin-eosin(HE)to observe cell quantity and morphology,methyl-thiazolyl-tetrazolium(MTT)to calculate cell survival rates,and electrochemiluminescence analysis to measure in vitro thyroglobulin(Tg)levels.Results: The research showed that K1 and FTC-133 cells had cell spacing increases,with an outer edge of smooth,nuclear chromatin condensation after RA combined TSA.Survival rates were assessed by an analysis of variance(ANOVA)by concentration and time point,F values of K1 were 23.52 and 170.14,and F values of FTC-133 were 57.09 and 224.35,respectively.There were significant differences for both cells(P <0.01).The SNK analysis indicated that survival rates were in the order of Group 20.05),yet a significant difference was seen between the other groups.Conclusions: Lower concentrations of RA combined with lower concentrations of TSA have both inhibited cell proliferation,decreased toxicity of the drugs,and increased the effect of K1 and FTC-133 cell differentiation.The mechanism of action may be that TSA has pretranscription DNA regulation and that RA has posttranscriptional signal regulation to enhance the effects ofinhibited proliferation and differentiation of cells by transcription systems.