Objective To evaluate the actual mismatch risk for KIR genes,KIR ligand HLA-C gene and KIR ligand HLA-Bw4I80 related genes in kidney transplant recipients and their donors.Method KIR genes,KIR ligand HLA-C gene and KIR ligand HLA-Bw4I80 related genes were analyzed in 322 recipients and their donors who received kidney transplantation.The effect of mismatches on acute rejection after transplantation was studied as well.Result In 322 cases of recipients and their donors,average mismatch risk for KIR-L gene was 4.73％,9.10％ for KIR-S gene and 1.95％ for KIR ligand HLA-C gene respectively.There were 245 cases (76.09％) of KIR ligand HLA-Bw4I80 related genes mismatch and 77 cases (23.91 ％) of match resepctively.There was no statistically significant difference in AR rate between KIR ligand HLA-Bw4I80 related genes mismatch group and match group (8.16％ in 245 vs.7.79％ in 77) (P＞0.05).AR reversal rate in mismatch group and match group was 95.0％ and 66.7％ (P＞0.05).Conclusion The mismatch risk for KIR ligand HLA-Bw4I80 related genes was even common between kidney transplant recipients and their donors,and this specific mismatch may be of benefit to patients who undergo actuate rejection.Further study is still required.

The mandibular canine usually has a single-root with a single canal. A case of a patient who has a mandibular canine with two well-defined roots and two root canals was reported. Size of the lingual root and buccal root was equal. The buccal root length was 24.5 mm. The lingual root length was 23.0 mm. Clinicians should be aware of the anatomical variation that exists in mandibular canines in practice.

Objective To evaluate the value of MR and CT examinations in the diagnosis of nasopharyngeal carcinoma (NPC) and compare 2008 staging system with 1992 staging system and 2002 UICC staging system for NPC. Methods MR and CT images of seventy-six cases with NPC were studied. According to 2008 staging system and taking MR as a standard, differences between these two examinations were evaluated under the new NPC staging system, and three staging system were compared by MR findings. Results MR was inconsistent with CT in eveluating invasion of medial pterygoid muscle(22,24 cases), lateral pterygoid muscle( 15, 11 cases), skull base(35, 32 cases) and intracranial fossa( 11,6 cases), but no statistical diffence existed ( P ＞ 0. 05 ). There were statistical difference ( P ＜ 0. 05 )between MR and CT in determining invasion of parapharyngeal space( 50, 61 cases), retropharyngeal lymph node metastasis(48, 23 cases), stage T1 (18, 11 cases), T2 (15, 22 cases), N0 (18, 24 cases) and N1(33, 27 cases) with differences of 11 cases, 25 cases, 7 cases, 7 cases, 6 cases and 6cases respectively.For invasion of parapharyngeal space, CT showed 11 cases more than MR while 5 cases were comfirmed as compression by local tumor and 6 cases were proved as retropharyngeal lymph node metastasis according to MR. For retropharyngeal lymph node metastasis, MR presented 25 cases more than CT. These two reasons above mainly caused the differences of T-staging and N-staging. For 2008 staging system, when compared with 1992 staging system, there were 9 cases upstaging and 1 case downstaging in T classification, 16 cases upstaging in N classification, and 15 cases upstaging and 1 case downstaging in clinical classification; and when compared with 2002 UICC staging system, there were 7 cases, 10 cases and 12 cases upstaging in T,N, and clinical staging respectively. Conclusions Compared with MR examination which was regarded as standard by 2008 staging system of NPC, there were some differences in demonstrating invasion of parapharyngeal space and retropharyngeal lymph node metastasis by CT. Compared to 1992 staging system and 2002 UICC staging system, 2008 staging system mainly made T and N classification of tumor upstage,resulting in upstaging in clinical classification.

BACKGROUND: It has been reported that the ischemia preconditioning (IPC) had credible protective efficiency on ischemic injury of the spinal cord during aorta operation, but the mechanism of the protective efficiency of IPC had not been clarified.OBJECTIVE: To study the protective effects of repetitive IPC on ischemic injury of spinal cord and its mechanism in rabbits.DESIGN: A completely randomized controlled study based on the experimental animals.SETTING: Department of anesthesiology in a university hospital.MATERIALS: The experiment was completed in the Department of Anesthesiology, Renmin Hospital, Wuhan University during September and December 2002. Twenty-four Japanese rabbits were randomly and double-blindly divided into sham-operation group, ischemia-reperfusion group and IPC group with 8 rabbits in each group.INTERVENTIONS: In sham-operation group, abdominal aorta was not clamped. Spinal cord ischemia was induced by infra-renal aortic cross-clamp for 45 minutes in ischemia-reperfusion group. Before the 45 minutes ischemia, the rabbits in the IPC group underwent four cycles of ischemia preconditioning, i.e. clamping abdominal aorta for 5 minutes then reperfusion for 5 minutes.MAIN OUTCOME MEASURES: The concentrations of calcium, magnesium, copper and zincum in spinal cord were measured in the 7th day after operation. Postoperative neurological function, EMG of rear limb, and spinal cord histopathological changes were assessed in all groups after operation.RESULTS: The concentrations of calcium and copper in spinal cord in ischemia-reperfusion group were significantly higher than those in sham-operation group( P ＜ 0. 05 or 0. 01 ), but magnesium and zincum significantly lower( P ＜ 0. 05). Compared with IPC group, calcium in ischemia-reperfusion group was significantly higher( P ＜ 0.01 ), but zincum significantly lower( P ＜ 0.01 ) . The neurological function and histopatholohical changes in ischemia-reperfusion group were much lower than those in sham-operation group and IPC group ( P ＜ 0.05 or P ＜ 0.01) . And there was significantly worse change of EMG in ischemia-repeffusion group than that in IPC group(P ＜ 0.01).CONCLUSION: Repetitive ischemic preconditioning can protect rabbit spinal cord from ischemia reperfusion injury quickly, and one possible reason for its protective effect is to maintain the balance of calcium, magnesium,copper and zincum in ischemic region.

Electroencephalography (EEG) is an important instrument for the evaluation of brain function, and an irreplaceable diagnostic technique for nervous system diseases. At present, China still lacks professional child-EEG talents. Therefore, it is a task of great priority to establish an effective and practical training method and foster more child-EEG physicians. As most trainees have not learned EEG before and only have limited time for learning, we divide the child-EEG training into three phases, includ-ing theory learning, practice training, and EEG reading and interpretation on the basis of the general rules in learning EEG. In the theory learning phase, basic EEG knowledge is taught comprehensively to form a solid foundation for future study. In practice training phase, the trainees acquire important skills of EEG by carrying out complete EEG monitoring, eliminating EEG artifacts, observing seizures, and read real-time EEG. In the phase of EEG reading and interpretation, the trainees learn to analyze EEG gradually by read-ing and report EEG under the guidance of the senior physician. Strict examination is arranged for each phase to evaluate study results objectively. The phased model is designed to implement a step-by-step training of child-EEG and foster the trainee's independent ability to carry out EEG inspection.

Objective To investigate the evaluation method of processing pieces' colour and quantificationally analyse the relactionship between the pieces' colour and the internal quality. Methods Taking different processing techniques on Rhizoma Alismatis as research objects,using a camera and Adobe Photoshop software to acquire the elementary information of processing pieces' colour and determine the contents of the active principle in Rhizoma Alismatis by HPLC. The active principle in Rhizoma Alismatis and the colour of processing pieces are analyzed quantificationally by SPSS 13.0 statistical software and data mining software Clementine 8.0. Results The method for acquiring and handling colour information of processing pieces in Rhizoma Alismatis could be used to quantificationally analyze the correlation of the colour of processing pieces. There is a significant correlation between processing pieces' colour difference and the internal quality. Conclusion The colour difference of processing pieces can be one of target for the quality assessment. The method can be popularized to other precessing pieces control of techniques.

Objective To optimize extraction technology of Fufang-Fuqing-Xiji.Methods Orthogonal test combined with Plackett-Burman experimental design was adopted to study the influence factors of water extraction in Fufang-Fuqing-Xiji. The contents of chlorogenic acid, paeoniflorin and caffeic acid in Fufang-Fuqing-Xiji were determined by HPLC gradient elution method at the same time. A multi-index comprehensive score method was applied to analyze the data and to screen the optimum extraction technology. Results The best extraction conditions of Fufang-Fuqing-Xiji were as following: threaded 80 mesh sieve, soaked 2 h, decocted 3 times with 12 times the amount of water for 1h each time.Conclusions This optimized extraction technology was rational and stable, which could be used for the extraction ofFufang-Fuqing-Xiji.

Objective To realize the actuality and analyze the problem of the hospital medicine preparation in Beijing,then to discuss its developing methods.Methods By summarizing questionnaire of the hospital medicine preparation and combining with the problem showed in daily supervision,we analyzed the main existing problems and reasons for hospital medicine preparation and put forward the developing methods.Results The main existing problems of hospital preparation are the decreasing variety of medicine preparation,insufficient infrastructure and software.Conclusion Therefore we should enhance the input on the infrastructure,set up the software,improve the quality of the staff,and consummate the regulation means and system.

Objective To investigate the value of DWI before treatment on predicting sensitivity of concurrent chemoradiation in nasopharyngeal carcinoma.Methods Seventy patients with nasopharyngeal carcinoma proved by nasopharyngoscope and biopsy pathology conducted DWI before concurrent chemoradiation and reexamined on receiving dose of 50 Gy.The mean, maximum and minimum ADC value of tumor were measured on DWI and maximum area of tumor before and during treatment ( on dose of 50 Gy) was delineated to calculate the tumor regression rate ( RS0-50 ).The patients were classified into three groups according to the RS0-50 as sensitive, moderate, and resistant therapeutic effect.Patients were classified into different groups according to the pathologic type and clinical stage respectively .Spearman correlation analysis was used between RS 0-50 and ADC values of all tumors , different pathologic types and clinical stages , respectively.ROC was used to evaluate the cutoff and value of ADC which had highest correlation to RS0-50 on predicting therapeutic effect.Results DWI of 3 patients were excluded due to obvious swallow artifact which influenced the measurement , and finally 67 patients were included in this study, with pathological type of nonkeratinized differentiated undifferentiated carcinoma in 49 cases, nonkeratinized undifferentiated carcinoma in 18 cases, clinical T1 stage in 7 cases, T2 in 14 cases, T3 in 17 cases and T4 in 29 cases.During treatment , there were 13 cases with sensitive therapeutic effect , 42 cases with moderate therapeutic effect and 12 cases with resistant therapeutic effect.RS0-50 [ ( 65.6 ± 3.1) %] showed mildly and moderately negative correlation to mean ADC [(1.06 ±0.19) ×10 -3 mm2/s] and maximum ADC [(1.29 ±0.33) ×10 -3 mm2/s] respectively ( r =-0.276, P =0.024 and r =-0.434, P=0.001, respectively).ROC showed when setting threshold at maximum ADC value of lower than 1.06 ×10 -3 mm2/s for predicting sensitive therapeutic effect , the specificity , sensitivity , and accuracy was 69.2%(9/13), 88.9%(48/54) and 85.1% (57/67), respectively, and when setting threshold at maximum ADC value of higher than and equal to 1.30 ×10 -3 mm2/s for predicting resistant therapeutic effect, the specificity, sensitivity, and accuracy was 75.0% (9/12), 65.5% (36/55) and 67.2%(45/67), respectively.Conclusion Pretreatment maximum ADC value were able to predict the tumor regression rate and sensitivity of concurrent chemoradiation in nasopharyngeal carcinoma .

The mandibular canine usually has a single-root with a single canal.A case of a patient who has a mandibular canine with two well-defined roots and two root canals was reported.Size of the lingual root and buccal root was equal.The buccal root length was 24.5 mm.The lingual root length was 23.0 mm.Clinicians should be aware of the anatomical variation that exists in mandibular canines in practice.