MicroRNA(miR),a type of 22nt non-coding RNA,modulate gene expression at posttranscriptional level by interacting with targeting mRNA and play an important role in both inflammatory reaction and autoimmune diseases.Especially,the expression of miR-146a in autoimmune diseases has gotten more and more attention in recent studies.This review summarized the correlation between the expression of miR-146a and the pathogenesis of some common autoimmune diseases.What's more,the potential role of miR-146a in the clinical diagnosis of autoimmune diseases are also discussed.

Objective To evaluate performance of the clinical laboratories for detection of TORCH immunoassay. Methods There were 2 times external quality assessment (EQA) for nuclear antibody detection. Each panel consisting of 5 liquid serum samples were distributed. Each participants of the EQA program had to reply the results, the methodological procedure and the kits. All data were analyzed and then provided to all laboratory in our EQA program. Results In 2007, the rate of good response were more than 80% for HSV immunoglobulin-M, Rubella immunoglobulin-M and CMV immunoglobulin-M. Response for Toxo immunoglobulin-M was poor (53.1%). The sensitivities of the commercial kits were quite low (<80%). Some clinical laboratories using the same kits gave quite different S/CO value. Conclusions A lot of clinical laboratories get good score in TORCH detection external quality program. False negative is the major problem.

Objective To investigate the influence of nucleic acid extraction by boiling the serum samples and purifing nucleic acid from serum on HBV DNA detection by PCR. Methods The DNA templates from 2 serum samples with different HBV DNA concentration and 3 serum samples with hemolysis and non hemolysis for PCR were prepared by two kinds of method, i.e. by boiling the serum to release HBV DNA from the virus particles and by purifing the nucleic acid from serum. Then,the difference of reproducibility and HBV DNA quantitative values by PCR using the templates prepared by the two nucleic acid extraction methods was compared.Results HBV DNA quantitative values by PCR using the templates purified from the two samples were more reproducible( CV : 0.2165 and 0.3262, respectively) than those using the templates prepared by boiling the serum ( CV : 0.0699 and 0.1092, respectively). Moreover, when the concentration of hemoglobin in serum samples was higher than 5.89 ?g/L, the HBV DNA quantitative values by PCR using the templates purified from the samples were about one hundred fold more than those using the templates prepared by boiling the serum ( P

Objective To compare the real time flourescent quantitative HCV RNA PCR detective method with automated quantitative PCR (COBAS Amplicor) test. Methods The test panel consisted of 36 samples including one half ten fold dilution series of 7 samples, 20 HCV RNA positive samples, and 9 negative samples. We compared the two quantitive method, with their agreement for test results, intra assay variability, and linearity. Results The regression coefficient of linearity of COBAS Amplicor and real time flourescent quantitative method was 0.999 5 and 0.973 2, respectively. The inter assay coefficient of variation of COBAS Amplicor was lower than that of the real time flourescent quantitative method. A correlation co efficient between the HCV RNA titres as detected by the two methods was 0.845 ( P

Objective To evaluate the performance of antinuclear antibody (ANA) detection in clinical laboratories. Methods There were 2 external quality assessments ( EQA) for nuclear antibody detection. The panel consisting of 5 liquid serum samples was distributed. Each participants of the EQA program should include in their report the results, the methodological procedure and the kits used . All data were analyzed then distributed to all laboratories in our EQA program. Results During 2003 to 2005, more than 70% laboratories detected antinuclear antibody by using indirect immunofluorescence(IIF) method and the rate of acceptable response list were 94. 1% , 93. 0% and 98. 6% , respectively. We have got better result from signals fluorescence pattern such as homogeneous and speckled than multiplicity samples. A wide dispersion of ANA titers was obtained every year. We neceived different rate from different methods of anti-ENA detection and 90% laboratories used immunoblot method. For anti-dsDNA most participants gave us acceptable performance. Conclusions ANA detection in routine practice is far from being standardized. However, EQA can have an impact on ANA detection performance if it provides advice for participating laboratories to limited laboratory variations related to method, procedure and kits.

There are such problems as the contents of education lag , overemphasising cognition and intellectu-alization, despising practice and system supporting in current medical humanities education practice .We think that the medical humanistic education should adhere to the concept of student -oriented, medical education and human-ities education fusion , the idea of ideological education as the leading factor , the psychological compatibility as the base ,the system strengthening as the security .The medical humanities education mode is not only the response of the main current medical education mode of social alienation and human alienation , but also the surpassing of the object of humane education mode .It fully reflects the personality characteristics of the contemporary medical students , embodies the regularities of nurturing and development of human behavior in medical students .

Objective To explore the surgical reconstructive procedures of adult-to-adult living donor liver transplantation (LDLT).Methods Two patients with end-stage liver disease were successfully subjected to adult-to-adult LDLT using dual grafts in our division. One patient’s donors were left lobe and left lobe from his two old sisters, respectively. The other graft was right lobe from his 56 years-old mother and left lobe separated from a cadaveric organ donor.Results Both recipients and three donors display good graft function and normal triangular shape regeneration of their liver grafts after liver transplantation. There was neither mortality nor serious complications in the donors. Conclusion The critical issue of LDLT is donor morbidity. Dual grafts from two living donors can help to alleviate the problem of small-for-size grafts and yet secure the safety of the donor. But the complicated surgical techniques give a great challenge for liver transplant surgeons.

0.05). Conclusion The present data suggest that both GG252 and AA804 genotypes of the LTA gene are not the risk factors of MI. Further evaluations in adequately powered large studies are needed to confirm these findings.

Objective To construct quality control materials for chlamydia trachomatis (CT) polymerase chain reaction detection and evaluate the stability of the material.Methods The reference regarding the target sequence for CT PCR detection has been reviewed.The ovedap extension technique and molecular cloning techniques were used to construct a recombinant lasmid.Then the recombinant plasmid pTARGETTM-CT was transfected into a HTB-SiHa cells.The cuhured epithelia cells,vere collected as quality control material.Then we evaluated the stability of this material with domestic kits for CT PCR detection.The stability in different conditions were summarized and evaluated.The EQA samples for CT test survey ere prepared from the above prepared cells and distributed to the EQA participants nationwidely.Results Five fragments from CT(178-610),(1219-1993),(2471-3260),(5239-5864),(6722-7499) were cloned into pTARGET TM.The recombinant plasmid was transfected into mammalian cells as a final form for the quality control materials.Real-time PCR analysis howed the original material was positive with domestic chlamydia trachomatis kit(3.21×108 copies/ml).A Series of dilution resulted in the decreased result .The stability testing indicated the quality control materials were stable at least for one month when stored at 4℃,room temperate or 37℃.Conclusions We used several kinds of molecular iology methods such as ovedap PCR and enzyrnatie digest to construct a recombinant plasmid which contained several fragments.The quality control materials for chlamydia trachomatis PCR detection was developed successfully.

Objective To study suitability of a series of lyophilized serum with definitive HBV DNA value in fluorescence quantitative COBAS Amplicor HBM kit and a sample with 106 copies/ml HBV DNA was prepared, and sent to various manufactures which would be asked to detect the samples using their own kits. Then a calibration curves from CT values of the series to the corresponding concentrations was compared with that obtained from the external standard-calibration curve with the manufactures series. Results The standard-calibration curve with the series of lyophilized serum showed an excellent correlation (