To improve the quality of teaching,stimulate students'interest in studying medical cytobiology,and nurture the medical students with ability of practice,solid theory and innovation,we have carried on discussions about different kinds of teaching methods and discovered such results:If teachers can integrate the most recent development of medical cytobiology with teaching,strengthen the relationship between the real life and the clinical practice,and update the teaching contents with multi-teaching methods,we will receive a satisfactory teaching effect.

Objective To investigate the detection capacity of malic enzyme 1 and isocitrate dehydrogenase 1 ( Mod1&Idh1) in the laboratory animal monitoring laboratories in China in order to understand the detection capacity of la-boratories and to improve the detection level of laboratory animals’ quality.Methods Based on the program approved by CNAS, samples preparing, homogeneity test and stability test of malic enzyme 1 and isocitrate dehydrogenase 1 in the mouse kidneys were carried out.Standard operation procedure and samples with random numbers were distributed to the la-boratories.The laboratories should submit the result reports before the time limit expires.If the laboratory reports were the same with the standard results, the laboratories will receive satisfactory remark.If laboratory reports were not the same with the standard results, the laboratories will receive unsatisfactory remark.If a laboratory did not submit report, the laboratory will also receive unsatisfactory result.Results Eight laboratories out of 10 (80%) enrolled laboratories reported satisfac-tory experiment results, and two laboratories (20%) presented unsatisfactory results.Conclusions The whole detection level of laboratories in Mod1 &Idh1 is relatively high in the laboratory animals monitoring laboratories in China.It can re-flect the detection level of laboratories to conduct the laboratory capacity evaluation.

Objective To strengthen the quality control management and enhance the detection capacity of the experimental animal quality control laboratoriesin our country through the detection of serum esterase-1 (Es-1) in the experimental mice.Methods The samples were prepared according to the standard procedure, and then were randomly numbered and distributed to participating units by cold-chain transport.Before the deadline, the participants submitted the results and the copies of original records.When the results were completely consistent with the standard results,the results were regarded as satisfactory, otherwise were unsatisfactory.Results A total of 11 laboratories participated in this program, of which 10 laboratories were regarded as satisfactory (90.9%) and one laboratory obtained unsatisfactory result (9.1%).Conclusions The results of this proficiency testing project demonstrate that the overall detection level of Es-1 in laboratory mice is highof the participating laboratories.However, more attention still should be paid to standard specifications and some test details.

Object To develop the gene resources of Jilin Shuangyang sika deer,a rare animal in China and reveal the pharmacological functions of deer medicinal material on the molecular level. Methods A cDNA plasmid library of spleen cells derived from Shuangyang sika deer was set up. Some housekeeping genes were cloned and analyzed. Results One of the cDNA sequences and it's deduced amino acid sequence in deer share high homology with a group of cDNA sequences encoding ribosomal protein L27 in human,rat,Canis and mouse and their corresponding amino acid sequence respectively. It has the completed open reading frame as well. Conclusion A novel full-length cDNA encoding Shuangyang sika deer ribosomal protein L27 is discovered. This sequence has been deposited in Genbank under accession number AF373231.

Objective To investigate the mechanism of hypedipidemia on pancreas of rats by comparative proteomic analysis.Methods Ten male SD rats were randomly divided into two groups,the experimental group Was fed with high lipid forage and the control group Was fed with normal food.Pancreatic samples from the two groups were harvested six weeks later.Differential protein analysis Was performed using differential in-gel electrophoresis(DIGE),and characterizing the protein biomarkers using tandem mass spectrometry.Western blot Was used to confirm the expression of significantly changed proteins.Results Compared to the normal pancreas tissue,a total of 3 protein spot-features were found to be significantly increased and 11 significantly decreased in pancreatic samples with hyperlipidemia.Significantly increased proteins in hyperlipidemia pancreatic samples were arginaseⅡ,ribonuclease inhibitor and glyeine amidinotransferase,which increased by 2.19,1.82 and 1.12 fold,respectively.Significantly decreased proteins in hyperlipidemia group were tyrosyl-tRNA synthetase,alpha-amylase,triacylglycerol lipase,DJ-1protein,Cu,Zn superoxide dismutase,which dicreased by 2.48,2.37,1.85,1.73 and 1.65 folds,respectively.Western blot analysis revealed increased arginase Ⅱ levels and decreased alpha-amylase in pancreatic samples with hyperlipidemia.Conclusions Pancreas wag possibly injured by hyperlipidemia via increase of arginase Ⅱ.Decreased amylase and lipase may be the protection mechanism of pancreas.

Objective To study the influence of unilateral and bilateral amplification on the effect of hearing aid evaluation .Methods Using the subjective method that International Outcome Inventory for Hearing Aids (IOI-HA) and objective method that medium acoustic intensity (65 dB SPL) word recognition score(WRS) to evaluate the effect of unilateral and bilateral hearing aid fitting of middle -aged severe sensorneural hearing loss .Results Hearing aid were used for severe sensorneural hearing loss and the improvement of monosyllables and sentences in quiet and noise test of unilateral were 35 .73% ,43 .15% ,43 .23% ;the improvement of monosyllables and sentences in quiet and noise test of bilateral were 37 .90% ,51 .33% ,54 .86% .The WRS of bilateral was higher than unilater-al .The score of IOI-HA was 15~37 ,meaning patients with severe sensorneural hearing loss were satisfied with hearing aid ,and there was no statistical significance between unilateral and bilateral fitting .Conclusion The bilat-eral hearing aid fitting was better than unilateral .Binaural hearing loss are recommended to fit bilaleral hearing aids .

Objective The study was to evaluate DWI for quantifying liver fibrosis. Methods A total of 12 volunteers, 47 patients who had chronic HBV or HCV hepatitis and underwent liver biopsy [Scheuer score for fibrosis(S) and inflammation(G)] were enrolled in this study. They were scanned using a 1.5 T MR unit with b value of 0,250,500,750, 1000 s/mm~2. ADCs at b_(250-1000) and b_(500-1000) were the average ADCs of b=250, 500, 750, 1000 s/mm~2 and b=500, 750, 1000 s/mm~2. The studied the correlation between Scbeuer scores and ADC values, and conducted Mann-Whitney U test and Logistic regression to evaluate ADC for prediction of fibrosis scores. Results The average ADCs were (1.41± 0.11),(1.37±0.09), (1.27±0.05), (1.26±0.04), (1.22±0.06) mm~2/s respectively from SO to S4, stage at b=750 s/mm~2 (F=18.31, P<0.01). With the increase of fibrosis score, the average ADC decreased gradually, the two were better negatively correlated at b_(250-1000)(r=-0.727, P<0.01) than other b values. Using b_(750) and the two combined b values, the found significantly lower ADCs in S2 or greater versus S1 or less and in S3 or greater versus S2 or less fibrosis (P<0.01). The best predictor for S2 or greater was b_(750) with the largest AUC of 0.909, sensitivity of 85.7%, and specificity of 100.0% (ADC ≤1.35×10~(-3) mm~2/s). The best predictor for S3 or greater was b_(250-1000) with the largest AUC of 0.864, sensitivity of 69.6%, and specificity of 95.8% (ADC≤1.53×10~(-3) mm~2/s). Conclusion DWI can be a good predictor for scoring liver fibrosis for S2 or S3 stage above, while b_(750) and the combined b values are suitable for evaluation.

Objective To analyze the status of research secretary team in Anzhen hospital and to put forward suggestions to improve the current situation of the team.Methods Factors such as the setting of research secretary duties,implementation mode,status of research secretary team building on hospital clinical departments,and existing problems were analyzed.Results The team building of research secretary reduced the department directors' burden,standardized the daily management,and partly improved work efficiency through co-ordination.But the inadequate maintenance of of scientific research strength was needed to be proved.Conclusions Improving the selection scheme of research secretary,setting up the system of rewards and penalties,Strengthening exchanges on a regular basis may sharpens research secretary professional ability and the quality,accelerate the hospital's research developments.

Objective To investigate the clinical effect of preoperative nutritional treatment and perioperative nutrition support for the patients with esophageal cancer.Methods According to the digital table,90 patients with esophageal cancer were divided into the control group(15 cases),preoperative nutrition group(25 cases),postoperation nutrition group(25 cases)and preoperative nutrition + postoperation nutrition group(25 cases).The postoperative quality of life and the complications were compared.Results Postoperative quality of life in the preoperative nutrition group,postoperation nutrition group and preoperative nutrition + postoperation nutrition group were all better than that in the control group(t =14.76,15.13,17.87,all P ＜ 0.05).The incidence rate of postoperative complications in patients received nutritional intervention significantly decreased than in the control group(x2 =9.17,12.13,19.18,all P ＜ 0.05).Conclusion The preoperative nutrition and postoperation nutrition can improve the postoperative quality of life and reduce the incidence rate of the complications.

Objective To screen the markers of chromosome 12, which is vacant in the Beijing local standard DB11/T828.3-2011 for genetic quality control of miniature pigs in Beijing, and to study the applicability of the local standard by comparison of two different methods for evaluation of the genetic quality of the same population.Methods According to the literature, we selected four pairs of microsatellite markers of chromosome 12 and studied the polymorphism through monitoring the genetic quality of two populations of China Agricultural University miniature pigs.We screened the highly polymorphic markers of chromosome 12, combined them with the microsatellite primers of the standard 18 pairs of chromosomes to establish the whole chromosome method.We compared and analyzed the applicability of the local standard DB11/T828.3-2011 through monitoring the genetic quality of the same population of miniature pigs with different method.The data were processed and analyzed using software Popgen32.Results All the screened four pairs of microsatellite markers of chromosome 12 were highly polymorphic (PIC>0.5).The local standard showed a chromosome coverage of 94.7%, stability of amplification of 96.0%, and certified that the China Agricultural University miniature pig III was qualified, while the China Agricultural University miniature pig I was not qualified.When the markers of chromosome 12 were added, the whole chromosome method showed result of 100% chromosome coverage and 96.6% amplification stability, both of the two populations of pigs were certified as qualified.Conclusions The four screened markers of chromosome 12 are all highly polymorphic, and provide a support for supplement of the local standard DB11/T828.3-2011.