This article introduces how to use debate in clinical teaching and explains the organization,training,choosing the debate topics,making the rule and implementation of debate.Debate is advantageous to raise and enhance the medical students' abilities of study independent,clinical thought,consult,analysis and application literatures,oral expression,team cooperation and so on.

To providing evidence about nitrogen adequate application of Platycodon grandiflorum, the pot culture experiment was conducted to study the effect of nitrogen on the growth, physiological metabolism and the quality of P. grandiflorum. The activity of NR, GS and SOD, POD and CAT were determined. And the nitrate and ammonium nitrogen content, photosynthetic characteristics, active components of P. grandiflorum were determined. The results showed that the nitrate nitrogen content and P. biomass reached its maximum value, when NH4(+)-N/NO3(-) -N was 0: 100, the activity of NR. The activity of GS was the highest at the NH4(+) -N/NO3(-) -N ratio of 25:75 and ammonium nitrogen content was the highest at 75:25. The activity of SOD decreased and then increased with the increasing of NO3(-) -N. At the NH4(+) -N/NO3(-) -N ratio of 25: 75, the activity of CAT had its maximum value and the content of MDA had the minimum value. At the same time, the content of platycodon D was the highest at this treatment. The studies had shown that different nitrogen forms and ratio had a significant effect on the characteristics of photosynthetic physiology, nitrogen metabolism and resistance adjustment, growth and the quality of P. grandiflorum. The NH4(+) -N/NO3(-) -N ratio of 25: 75 was a suitable ratio of nitrogen forms for the growth of P. Grandiflorum and accumulating the content of platycodon D.
Ammonium Compounds ; metabolism ; Biomass ; Drugs, Chinese Herbal ; analysis ; metabolism ; Nitrates ; metabolism ; Photosynthesis ; Plant Leaves ; chemistry ; growth & development ; metabolism ; Platycodon ; chemistry ; growth & development ; metabolism

Objective To study the characteristics of child acute lymphocytic leukemia (ALL) immuno-phenotype and evaluate its diagnosis value. Methods Direct immunofluorescence staining and CD45/Side Scatter (SSC) gating of flow cytometry were used for immunophenotyping in 111 cases of child ALL. The relation of mor-phology and immunology classification was analyzed. Results Three categories could be identified,including 81 ca-ses (73.0%) of B lineage ALL, 16 cases (14.4%) of T lineage ALL and 14 cases (12.6% ) of B/T lineage ALL. There were 25 cases (22.5% ) of ALL expressing myeloid-associated antigens. According to the FAB Morphology classification,59 cases (53.2%) of L1 type and 47 cases (42.3%) of L2 type were diagnosed. The two cases (1.8%) of L3 type were classified as one case of null-ALL and one case of B-ALL. One case (0.9%)of acute my-eloblastic leukemia (AML-M2a) was identified as null-ALL. The two cases that could not be diagnosed by FAB clas-sification were c-ALL. Conclusion The immunophenotyping helps to identify the character of leukemia with an im-portant value in diagnosis of child ALL.

OBJECTIVETo analyze causes of missed diagnosis of hiding post-malleolar fractures in treating ankle joint fractures of pronation-external rotation type according to Lauge-Hansen classification and assess its medium-term outcomes.

METHODSAmong 103 patients with ankle joint fracture of pronation-external rotation type treated from March 2002 to June 2010,9 patients were missed diagnosis,including 6 males and 3 females,with a mean age of 35.2 years old (ranged, 18 to 55 years old) . Four patients were diagnosed during operation, 2 patients were diagnosed 2 or 3 days after first surgery and 3 patients came from other hospital. All the patients were treated remedially with lag screws and lock plates internal fixation. After operation,ankle joint function was evaluated according to American Orthopaedic Foot and Ankle Society (AOFAS).

RESULTSAll the 9 patients were followed up, and the duration ranged from 14 to 30 months (averaged, 17 months). No incision infection was found, and all incision healed at the first stage. At the latest follow-up, AOFAS was 83.0 +/- 4.4, the score of 4 patients diagnosed during operation was 85.0 +/- 2.9, and the score of 5 patients treated by secondary operation was 81.0 +/- 5.3. All the patients got fracture union observed by X-ray at a mean time of 2.2 months after operation. There were no complications such as internal fixation loosing, broken and vascular or nerve injuries.

CONCLUSIONAnkle joint fracture of pronation-external rotation type may be combined with hiding post-malleolar fractures. So to patients with ankle joint fracture of pronation-external rotation type, lateral X-ray should be read carefully, and if necessary, CT or MRI examination should be performed. If adding lateral X-ray examination after reduction of exterior and interior ankle joint fixation, the missed diagnosis may be avoided.

Adolescent ; Adult ; Ankle Fractures ; False Negative Reactions ; Female ; Fractures, Bone ; diagnosis ; diagnostic imaging ; physiopathology ; surgery ; Humans ; Male ; Middle Aged ; Pronation ; Rotation ; Tomography, X-Ray Computed ; Treatment Outcome ; Young Adult

AIM:To compare the mutant prevention concentration(MPC)of linezolid and vancomycin against methicillin resistant staphylococcus aureus(MRSA)and study the correlation between minimal inhibitory concentration(MIC)and MPC.METHODS:MICs and MPCs of two drugs against 35 MRSA clinical stains were determined by agar plates dilution method.The correlations between MIC and MPC were determined by linear regression.The ability to restrict the resistance was evaluated according the pharmacokinetics of two drugs.RESULTS:The MPCs of two drugs against MRSA were 16 and 8 ?g/mL and the MPC/MIC was 8.MPCs and MICs correlated poorly(R2 were 0.32 and 0.008,respectively).According to pharmacokinetics of two drugs,the concentration of linezolid was inside the MSW(mutant selective window)for the entire dosage interval,while the concentration of vancomycin exceeded the MPC for the most dosage interval.CONCLUSION:The capacity of vancomycin for restricting the selection of MRSA resistant mutants is stronger than that of linezolid.There is low correlation between MPC and MIC.

The infection caused by pseudomonas aeruginosa biofilm has becoming one of the most urgent problems in hospital.Recent reports of possible mechanism of iron in biofilm formation were reviewed in this paper.The possible effects of iron on adsorption,microcolony formation,mature of colony and desorb were explained,and the prospect of clinical use of local iron or chelator spray was also reviewed here.

At present,transplantation has been the predominant way to solve most of the end-stage diseases,ensued by the use of immunosuppressive drugs.Since the immunosuppressive drugs have narrow therapeutic index,the blood drug concentration is needed to mornior.Pharmacogenetics is one subject which focuses on the interaction between gene and the metabolism of the drug,providing great help for designing the regime of achieving the target drug concentration.Meanwhile,it facilitates the realization of individual therapy.This review thus focuses on the latest advancement on the pharmacogenetics of those immunosupprressants,hoping to provide help for the treatment.

Objective: To obtain the indispensable key enzyme involved in the monoterpene biosynthesis, the geranyl diphosphate synthase gene GrGPPS was cloned from Gentiana rigescens, and its sequence analysis and prokaryotic expression were performed. Methods: According to the GrGPPS gene sequence of transcriptome of triennial G. rigescens, a pair of specific primers was designed, and the full length of cDNA sequences was obtained by RT-PCR. Then TA cloning, sequencing and sequence analysing were performed. Prokaryotic expression vector pGEX-T-1-GrGPPS was constructed and transformed into Escherichia coli Rosetta for expression under 37°C and induced by 1 mmol/L IPTG. Results: The GrGPPS cDNA had a length of 1107 bp coding for 369 amino acids. Sequence analysis showed that GrGPPS was the member of "short-chain prenyltransferases" super family. Results of phylogenic analysis showed that GrGPPS was at the same evolutionary branch with AmGPPS. The SDS-PAGE results displayed that the expressed proteins were consistent with the anticipated size. Conclusion: The GrGPPS gene is cloned from G. rigescens, and the stable prokaryotic expression system of pGEX-T-1-GrGPPS is constructed. This work will provide a foundation for further purification, structure, and functional research of GrGPPS protein.

Objective To evaluate canine adenovirus type 1 vaccine strain (Cannaught Laboratory Limited,CLL) as recombinant vaccine and gene transfer vector. Methods Recombinant virus CLLEGFP which contains enhanced green fluorescent protein(EGFP) reporter gene was constructed. CLLEGFP was used to infect various human derived cell lines (293, Hela, CO, SW, Hep-2 and CAM) by inoculating intraperitoneally(IP), intravenously(IV)and intramuscularly (IM)to Kunming mice other than oral administration. Various tissue samples of the mice were collected at multitime point for observing EGFP green fluorescence. Anti-EGFP antibodies were detected by Western blot analysis in the sera after 4 weeks. Results CLLEGFP can infect various human derived cell lines and express EGFP. EGFP green fluorescence were observed in liver tissue cells after IP transducing 3 days. All immune inoculation ways above could induce Kunming mice producing anti-EGFP antibodies which were identified by Western blot analysis. Conclusions These resluts indicate that CLL possess powerful potential as recombinant vaccine and gene transfer vector.