Nitric oxide(NO) is a kind of gas with the character of free radical,taking part in the generation,development and metastasis of the tumor.On the one hand,NO kills the tumor via macrophage and endothelial cells.On the other hand,NO accelerates the growth of tumor by promoting the growth of blood vessels and increasing the blood flow. Further study of NO will bring the hope of exploring the generation and development of tumors, and finding the new methods of treatment.

The present study deals with the histochemistry of intramural plexus in stomach, duodenum, ileum, caecum, proximal colon, distal colon and rectum of normal adult guinea pig, including the reaction of Mg~(++)-ATPase, Ca~(++)-ATPase, CCO, SDH, G6PDH, carbohydrate, protein, nucleic acid and lipid in the enteric neurons. The reactions of all the enzymes mentioned above are observed under the light microscope and estimated semiquantitatively, among which, Mg~(++)-ATPase and Ca~(++)-ATPase are measured quantitatively with microphotometer (Leitz MPV II). Both results of light microscope, and microphotometer were analysed statistically. It was found that the above mentioned enzyme activities in the enteric neurons, suggesting that the neurons carry out active metabolism with these concerned enzymes. There were significant differences in some enzyme activities between myenteric plexus and submucous plexus, the former showed higher activity in SDH, while the latter in LDH, G6PDH, and two kinds of ATPase. It is suggested that there are some differences in. the major metabolic manner of carbohydrate, energy metabolism and functional activity between, two plexus. Besides, there were marked difference in enzyme activities among myenteric plexus of different part of digestive tract, the highest activity was showed in duodenum and proximal colon, the lowest was in caecum. These results indicate that enteric neurons differ greatly in functional state, but whether or not the variation of enzyme activities is related with the different types of neurons is unknown.

Objective To explore the death risk factors of preterm infants with respiratory distress syndrome (RDS).Methods A retrospective analysis of 66 preterm infants with severe RDS,who admitted to our NICU between January 2010 and December 2011.The patients were divided into the death group and survival group according to the ending.Results There were a total of 24 cases died (36.36％).The death group's mechanical ventilation time,the median of base excess,the minimum median of pH,PaO2/FiO2,average gestational age,average birth weight,1 minute Apgar score and 5 minute Apgar score were all lower than those of survival group (P ＜ 0.05).In death group,the median duration of FiO2 ＞ 60％,intrauterine distress,polyembryony,sore for neonatal acute physiology perinatal extension version Ⅱ (SNAPPE-Ⅱ) score were all higher than those of survival group (P ＜ 0.05),but the mechanical ventilation complications had no difference between the two groups (P ＞ 0.05).Further Logistic regression analysis showed that independent risk factors were birth weight,1 minute Apgar score and SNAPPE-Ⅱ score,OR were 0.990,0.141 and 1.240 respectively.Receiver operating characteristic analysis of the ability of SNAPPE-Ⅱ score predicting death risk showed the area under curve was 0.86,the difference was statistically significant compared with 0.5 (P =0.000).Death risk prediction showed that the demarcation point SNAPPE-Ⅱ score =24.50 corresponded to the maximum (Youden index =0.70) correct prediction effect.Condusion Independent risk factors of died from severe RDS are birth weight,1 minute Apgar score and SNAPPE-Ⅱ scores; SNAPPE-Ⅱ score predicts risk of death from severe RDS accuracy is medium,equal to 24.50 is the best accuracy to the death risk prediction.

Objective:To investigate the anatomy of mandibular incisors using microcomputed tomography(Micro-CT).Methods:62 extracted mandibular incisors were selected from dental clinic and observed by Micro-CT.The anatomy of the teeth was analyzed. Results:83.9% of mandibular incisors had a single canal,72.6% had no accessory canal.The location of the apical foramen varied considerably.The mean distance from the root apex to the major lateral apical foramen was (0.613 ±0.298)mm.Of the canals the bucco-lingual diameter were greater than the mesio-distal diameters and the root bucco-lingual canal tapers were greater than the me-sio-distal.Conclusion:The morphology data of mandibular incisors were obtained using Micro-CT.

Objective To observe effect of personalized health education on drug compliance and efficacy in patients with multidrug-resistant pulmonary tuberculosis. Methods From October 2015 to May 2016, 100 cases with multidrug-resistant tuberculosis were selected. The patients were randomly divided into two groups, 50 cases in each group. The contorl group was given a routine clinical health education, the observation group were received personalized health education . Awareness of disease and medication, medication compliance and satisfaction after education in the two groups were compared. Results The total awareness rate in the observation group was 96.00% (48/50), the total medication compliance rate was 94.00% (47/50), the satisfaction degree was (87.62±6.95) points. The above three indicators in the observation group were better than those in the control group (P<0.05). Conclusion It is possible to improve the patient's awareness and adherence to disease and medication after taking the personalized health education program in patients with multidrug-resistant tuberculosis disease clinically. It can get a better satisfaction test result.

Glutamate is the primary excitatory amino acid in the mammal brain. Glutamate transporters perform the regulation of glutamate levels in synaptic cleft. If the glutamate transporters should not be expressed, stopped working, or gone into reverse releasing glutamate from the cytoplasm, there would be an extracellular build up of glutamate. Defective glutamate uptake has been suggested to be important in connection with amyotrophic lateral sclerosis, Alzheimer's disease and Parkinson's disease.

Objective: To assess the diagnosis value of applying integrated visual and auditory continuous performance task(IVA-CPT) and EEG biofeedback on children with attention-deficit- hyperactivity disorder(ADHD), and provide information for assisting diagnosis of ADHD. Methods: 113 children with ADHD were tested with IVA-CPT and EEG biofeedback. The sensitivity, specificity, misdiagnosis rate and missed diagnosis rate of these two methods were assessed according to the criteria of DSM-Ⅳ. Results: The sensitivity of IVA-CPT for the diagnosis of children with ADHD was 92.54, the specificity was 76.09%, misdiagnosis rate was 23.911% and missed diagnosis rate was 7.46%. And the sensitivity of EEG biofeedback for the diagnosis of children with ADHD was 83.58%, the specificity was 82.61%, misdiagnosis rate was 17.38 and missed diagnosis rate was 16.42%. Conclusion: Relatively, for diagnosis of children with ADHD, sensitivity is higher and missed diagnosis rate is lower, specificity of EEG biofeedback is higher and misdiagnosis rate is lower .

Objective To provide the scientific foundation for the rational antibiotic therapy.Methods The wild type (10 strains)and hyper-inducible type(5 strains)of trial strains,which were chosen in the First Affiliated Hospital of China Medical University from June 2003 to June 2004,were screened by ceftazidime,and then AmpC ?-lactamase activity was detected.Three dimensional test was used to detect phenotype mutation ,and the mutation rate was calculated.Results None of AmpC ?-lactamase activity was detected in the wild type of Serratia marcescans、Cloaca Enterobacter and hyper-inducible type Serratia marcescans.For the hyper-inducible type Cloaca Enterobacter,there was marked difference compared with the AmpC ?-lactamase activity induced by the 2 MIC ceftazidime for that of MIC and 1/2 MIC(P

Objective:To review clinical experience of PICC parenteral nutritoin in the acute and severe patients.Methods:Basilic vein,median vein and brachiocephalic vein were selected for PICC.Results:Insertion and use of PICC were successful in 56 cases with success rate of 93.33%.The parenteral nutrition was carriedout in 32 cases.There was no infection and phlebitis.2 cases failed in puncture. Conclusion:There was important clinical significance with the use of PICC in acute and severe patients.

Objective:To prepare resveratrol microemulsions by high pressure homogenization method and characterize the microe-mulsions. Methods:Using the particle size, polydispersion index and encapsulation efficiency as the indicators, the independent varia-bles of the preparation were inspected, and the microemulsions were characterized. The stability of resveratrol microemulsions was stud-ied by long term stability test preliminarily. Results:The mean particle size, polydispersion index and zeta potential of resveratrol mi-croemulsions was (231 ± 37. 8) nm, 0. 228 ± 0. 047 and ( -42. 5 ± 4. 3) mV, respectively. The microemulsions were found to be small and spherical with smooth surface under a transmission electron microscope. Long term stability studies showed that the microe-mulsions were stable in 3 months after stored at 25℃. Conclusion:The preparation process of high pressure homogenization method for resveratrol microemulsions is simple and feasible.