Objective To study a method for determination of aluminum in food,and to ensure food safety and public health.Methods Microwave digestion-chrome azurol S spectrophotometric method was used to detect the aluminum content in fried dough sticks.Detection limit,linear range,precision,accuracy and maximum absorption wavelength were calculated.Results The method detection limit was 0.08 μg,precision was 0.60％-5.90％,and recovery rate was 96.0％-102.3％,maximum absorption wavelengnth was 620 mm.Aluminum content in 10 samples of fried dough sticks were all exceeded the standard,which were 709.5,980.8,1 010.3,1 151.5,1 214.0,1 243.7,1 318.1,1 374.0,1 435.0 and 1 479.4 mg/kg.Conclusion The method is simple,reliable,reproducible and easy to be used.

Objective:To get the prevalence of attention-deficit hyperactivity disorder and in Children. Methods:The subjects were 2188 children who were 4~16 year-old in Wuhan. We had their parents filled the investigation forms. Diagnosis was made according to criterion of attention-deficit hyperactivity disorder in DSM-IV. Results:of behavior problems were got through Achenbach Behavior Questionnaires. Those who were diagnosed as ADHD were classified into three subtypes: predominantly inattentive type; predominantly hyperactive-impulsive type and com-bined type. All suspicious patient and their parents were invited to have the diagnostic talk. Results: (1) The rate of ADHD was 13.58%. ADHD-C, 2.63%; ADHD-I, 8.27%; ADHD-HI, 2.68%. The male, 18.57%; female,8.78%. The ratio of male: female was 2.24:1。(2) There was significantly difference of rate of ADHD between age groups. The rate of 4~5 years-old was 15.88%, that for 6~11 years-old was 15.85%; and for 12~16 yeas-old, 9.98%. The rate of ADHD decreased by aging, especially the group of ADHD-HI. But the rate of ADHD-I was still increased, especially the male group of 6~11 years-old, 12.19%. (3) There was significantly difference of sociality ability between ADHD children and the normal. (4) No matter which age and sex, the scales of behavior problem of ADHD children were higher than the normal children. And the number of factors of behavior problem of ADHD children increased by ag-ing.Conclusion: The rate of ADHD-I was the highest in the three subtypes defined by DSM-Ⅳ, especially among boys 6~11-years-old. The rate of ADHD is significantly associated with sex and age.

Objective To reveal the important role of aberrant splicing in cancer and to identify differential expressing isoforms and differential alternative splicing events between acute myeloid leukemia ( AML) and chronic myeloid leukemia (CML).Methods Based on whole transcriptome sequencing of CML (K562) and AML(THP1 and HL-60) cells,TopHat, MATS and Cufflinks were used to identify alternative splicing events and alternative splicing isoforms and analyze differenti -al expression of isoforms and genes .Results A total of 130 genes were identified to be highly expressed in CML and 80 genes in AML cells .Also, 337 differential expressed isoforms and 35 specific alternative splicing events between AML and CML cells were identified.Conclusion There are significant differences in alternative splicing isoforms and events between AML and CML cells.Leukemia-associated alternative splicing events can be used as potential tumor markers or drug targets.

Objective To study the effects of QRS-complex duration of patients with chronic left heart failure on their in-hospital prognosis. Methods Total 174 patients admitted for chronic left heart failure ( New York Heart Association class 3 and 4 ) from January 2014 to June 2015 were enrolled the study. They were divided into two groups according to the QRS duration at admission:normal QRS duration group (QRS ≤120 ms, n=145) and prolonged QRS group (QRS ﹥120 ms, n=29). The differences of clinical characteristics and incidences of exacerbated left heart failure, fatal arrhythmias and cardiac death during hospitalization were compared between the two groups. The influences of QRS duration on in-hospital adverse cardiovascular events was analyzed by logistic regression. Resu1ts The proportion of males (75. 9% vs. 24. 1%, P=0. 001), plasma B-type natriuretic peptide (BNP) (7. 1 ± 0. 8 vs. 6. 6 ± 1. 0, P=0. 02), left ventricular end diastolic diameter (LVEDd) [(60. 7 ± 9. 9)mm vs. (53. 5 ± 10. 8)mm, P=0.001], left ventricular end systolic diameter (LVESd) [(49.1 ±13.3)mm vs. (39.7 ±13.0)mm, P﹤0. 001], and the incidence of exacerbated left heart failure (20. 7% vs. 4. 8%, P = 0. 003), fatal arrhythmias (55. 2% vs. 21. 4%, P ﹤0. 001) and cardiac death (6. 9% vs. 0. 7%, P =0. 019) during hospitalization were significantly higher in the prolonged QRS group than in the normal QRS group. Left ventricular ejection fraction( LVEF) in the prolonged QRS group was significantly lower than in the normal QRS group (39. 6% ±17. 3% vs. 50. 5% ± 17. 3%, P =0. 002). Heart rates [(92. 4 ± 21. 4)bpm vs. (81. 6 ± 19. 9)bpm,P=0. 035], plasma BNP(7. 2 ± 0. 8 vs. 6. 7 ± 1. 0, P=0. 029), LVEDd(63. 5 ± 9. 1 vs. 57. 9 ± 9. 1, P=0. 015), LVESd (52. 9 ± 12. 2 vs. 44. 3 ± 11. 8, P=0. 005), incidences of left heart failure deterioration (18. 2% vs. 3. 2%, P=0. 018), fatal arrhythmias (63. 6% vs. 36. 5%, P=0. 027) and cardiac death ( 9. 1% vs. 0%, P=0. 015 ) during hospitalization among male patients in the prolonged QRS group were significantly higher than those in the normal QRS group, but LVEF ( 35. 0% ± 15. 3%vs. 47. 1% ± 16. 2%, P =0. 003 ) was on the opposite. The incidence of left heart failure deterioration among female patients in the prolonged QRS group was higher than that in the normal QRS group ( 28. 6%vs. 6. 1%, P=0. 034). QRS complex duration was positively related to LVEDd ( r=0. 4019, P﹤0. 001) and LVESd ( r =0. 3289, P ﹤0. 001 ) . LVEF in male patients was significantly lower than in female patients (40. 0% ± 16. 7% vs. 53. 2% ± 17. 6%, P﹤0. 001). On the contrary, LVEDd [(59. 4 ± 9. 4) mmvs. (50.3±10.6)mm,P﹤0.001],LVESd[(46.6±12.5)mmvs. (36.2±12.4)mm,P﹤0.001] were greater in male patients than in female patients. After adjusting for gender , age, cigarette smoking, history of high blood pressure, serum creatinine, low-density lipoprotein cholesterol, LVEF, LVEDd, LVESd, use of angiotensin converting enzyme inhibitors ( ACEI) or angiotensin receptor blockers ( ARB) and aldosterone receptor blockers, multiple logistic regression analysis showed that prolonged QRS complex duration is an independent risk factor of adverse prognosis for the patients with HF during hospitalization (OR=4. 21,95%CI:1. 59-11. 12,P=0. 004), and female gender is a protective factor for them ( OR=0. 304,95%CI:0. 116-0. 793,P=0. 015). Conc1usions The incidences of left heart failure deterioration, fatal arrhythmias and cardiac death in the chronic left heart failure patients with prolonged QRS duration were higher than in those with normal duration. Female gender is a protective factor for chronic left heart failure.

Objective To compare the effects of continuous versus intermittent feedings on the growth of very low birth weight infants. Methods Databases of Pubmed,Embase,Ovid,the Cochrane library and CBM were searched through internet,and citations of relevant original studies were also searched manually by using keywords of 'ontinuous,intermittent,nasogastric,premature,very low birth weight' Meta analysis was done on the results of these studies. Results Seven eligible studies with 434 infants were identified,among them,217 were fed using continuous nasogastric gavage,and other 217 were fed by intermittent nasogastric gavage. The result of the Meta analysis revealed that there was no statistical difference in the growth of the infants between two feeding methods. Conclusions Feeding methods are associated with similar outcomes when calorie intake is guaranteed.

BACKGROUND:Studies addressing coronary heart disease are largely dependent on the establishment of myocardial infarction animal models. It is very important that exploring a safe method with easy operation, less damage, long time survival and high survival rate for myocardial infarction animal model OBJECTIVE:To compare the pros and cons of two kinds of thoracotomy anterior descending coronary artery ligation to do myocardial infarction animal model. METHODS: Thirty healthy male New Zealand white rabbits were randomly divided into three groups: control, median sternotomy incision, and left sternal incision. The anterior descending coronary artery was ligated after thoracotomy. The operation time, amount of intraoperative bleeding, postoperative food intake, and recovery time of eating were monitored during the surgery and within 24 hours after the surgery. And myocardial enzyme indexes were also monitored within 24 hours after the surgery. Rabbits were detected with ultrasonic echocardiogram at 4 weeks. RESULTS AND CONCLUSION:Different levels of ST segment elevation appeared in median sternotomy and left sternal incision groups by echocardiogram. The success rate of modeling was 70% in median sternotomy incision group, and 80% in left sternal incision group. Within 24 hours post-surgery, the myocardial enzyme indexes in the two groups were significantly increased compared with before surgery (P < 0.05). At 4 weeks, the left ventricular ejection fraction and the left ventricular shortening fraction were significantly decreased when compared to before surgery (P< 0.05). The operation time was shorter, the amount of bleeding was less, the time of eating recovery was less and the amount of eating was much in median sternotomy group than in left sternal incision, with significant differences between he two groups (P < 0.05). The median sternotomy incision for the ligation of anterior descending coronary artery is better than the left sternal incision to establish myocardial infarction models.

Objective To investigate the clinical features and pathogenic genes of a familial hypokalemic periodic paralysis ( HOKPP).Methods PCR amplification and DNA sequencing were used to screen candidate genes of the HOKPP family members (CACNA1S, SCN4A, KCNE3), and the clinical features were carefully analyzed at the same time.Results The sequencing analyses of the SCN4A gene in the proband identified three nucleotide sequence mutations, which influenced the amino acid sequence of the skeletal sodium channel.One of the mutations was identified as a C/T heterozygous pattern at the 2111th nucleotide position in exon 13, resulting in a change from Thr to Met at the 704th amino acid position of the sodium channel protein.All affected patients carried the Thr704Met mutation, whereas unaffected family members did not.Clinical symptoms in this family followed an autosomal dominant inheritance pattern.Muscles weakness, pain and hypokalemia in the period between attacks were seen in all patients.Paralytic symptoms occurred early, lasted longer and recurred frequently, while cold was the main predisposing factor.With the progress of the disease, patients represented persistent weakness and atrophy in proximal muscles.Conclusions Mutation (Thr704Met) in the SCN4A gene should be responsible for this family.This mutation causes severe HOKPP and progressive muscle atrophy.

Objective:Normal and lung qi deficiency rats of proteomics of lung tissue of rats differentially expressed and mass spectrometry.Methods:A total of 20 SD rats were randomly divided into control group,lung qi deficiency group,with 10 rats in each roup.Lung qi deficiency group model replication using composite method by intratracheal injection of lipopolysaccaride and smoked.All rats in each group before anesthesia 12 hours of fasting,water deprivation,weight after 28 days modeling,Thoracotomy to remove left lung tissue after anesthesia was 10 mg from each rat, 3 rats from each group, using two-dimensional electrophorsis analysis, two-dimensional gel electrophoresis image, peptide mass fingerprinting and electrospray tandem by mass spectrometry to protein identification.Results:2 differntial protin profiles for proteomics analysis,identified 14 protein in rat lung tissue,protein 5 expression, regulation 9 expression.Conclusion:By proteomic analysis,identify the protein have correlation with lung deficiency syndrome.

OBJECTIVE:To improve the level of rational drug use,and to reduce the workload of clinical pharmacists. METH-ODS:Established“Intelligent Management and Solution for Clinical Rational Drug Use”of our hospital was introduced,including post-prescription review(all prescriptions review)system, self-maintenance system for rational drug use knowledge base,pre-pre-scription review (rational drug use real-time review) early warning system. The effects of intelligent system were evaluated. RE-SULTS & CONCLUSIONS:After the application of the system,the following aspects could be achieved,including“all prescrip-tions review”,“multi-prescriptions/longitudinal review”,system knowledge base real-time update and autonomous definition of re-view rules,effective communication and intervention between physicians and pharmacists before printing prescription by Yaozhidao instant messaging system. Through related trial evaluation,the proportion of false positive prescriptions decreased by 17.65% after 4 months of the application of the system;drug consultation prescriptions review average score of outpatient pharmacists increased from 81 to 94.85;the time of prescription review decreased by 4.72-5.46 times. Through mandatory interception of unqualified pre-scriptions,severe warning,timely prompt and pharmacists’intervention,the rate of unqualified prescriptions pre-reviewed by the system in respiration department decreased from 32% in Jan. 2015 and 21% in May to 4.62% in Dec. So,the application of the system promotes rational drug use in outpatient department,reduces the workload of pharmacists and ensures the safety of drug use comprehensively.

〔Abstract〕 The paper introduces the informatization construction status of biobank in Peking University People's Hospital, including construction scope, basic infrastructure, steps as well as informatization management system application status, elaborates the application effect.The informatization construction of biobank could shorten the time of operation and ensure the quality of the samples.