Objective To investigate the correlation and characteristic of the functional polymorphism of the dopamine D4 receptor gene on the behavioral problems in school-age twins.Method The behavioral problems were assessed among a total of 147 twin pairs aged 6-12 years with the Achenbach Child Behavior Checklist (CBCL).The DRD4 gene polymorphism was applied for different types with polymerase chain reaction.The generalized estimating equations model was used to analyze the effect of DRD4 gene polymorphism and the interaction of DRD4 gene polymorphism with children age,gender,monozygotic/dizygotic on twins' behavioral problems.Results (1) School-age children's anxiety/depression,withdrawn,thought problems,attention problems,social problems,delinquent problems,aggressive behavior and total variance mainly were correlated with DRD4 gene polymorphism (P＜0.05),and physical discomfort might be related with DRD4 gene polymorphism (P=0.067).Except social problems,the detection rate of behavioral problems of the twins with 4/6 genotype (Gene type carrying 5 or more repeated sequences) of DRD4 gene (6.25％-21.25％) was higher than those with other genotypes (0-14.74％).(2) Withdrawal was related to children age (x2=4.348,P＜0.05),and twins aged 6-10 might lead to withdrawal.(3) The interaction of DRD4 gene polymorphism and children age had a significant effect on withdrawal (x2=4.348,P＜0.05) and physical discomfort(x2 =5.189,P＜0.05),and the elder age (11-12 years) children had a certainly protective effect on the withdrawal and physical discomfort with 4/6 genotype in twins.The detection rates were 3.54％ and 2.65％ in the younger-age (6-10 years) twins,while all 0 in the elder-age (11-12 years) for the withdrawal and the physical discomfort respectively.Conclusions The DRD4 gene polymorphism may be correlated with behavioral problems in school-age twins.The interaction of DRD4 polymorphism and children age had a significantly effect on withdrawal and physical discomfort.

OBJECTIVE To study Pseudomonas aeruginosa infection in respiratory tract of severe neurosurgery patients after tracheotomy,and discuss the prevention and management of nosocomial infection.METHODS The data of 19 severe patients admitted in neurosurgery from Dec 2005 to Oct 2007 who underwent tracheotomy were analyzed retrospectively.RESULTS Respiratory tract infection occurred in all 19 cases,the incidence rate was 100%.Eleven species and 73 strains of pathogenic bacteria were found.Thirty(41.10%)strains of P.aeruginosa were found in 12(63.16%)cases,the drug resistance rate was higher.CONCLUSIONS P.aeruginosa is the most important pathogenic bacteriaum of respiratory tract nosocomial infection in severe neurosurgery patients after tracheotomy.Strengthening the sterilization,isolation and airway management and selecting antibiotics based on drug sensitive test are the important methods to prevent and control infection.

Objective To investigate the factors of Alzheimer’s Disease (AD). Methods A 1:1 matched case-control study was conducted. The study included 129 patients of clinically diagnosed AD and 129 controls selected from Nanchang and Jiujiang areas. The data were analyzed by the conditional logistic regression. Results The results showed the unsociable personality (OR=2.486,95%CI=1.075～6.638),the history of great negative life events (OR=4.125,95%CI=1.706～12.249),using cookers made of aluminum (OR=2.454,95%CI=1.277～5.268) were identified as risk factors for AD. The good family income state (OR=0.324,95%CI=0.106～0.828) and frequently physical exercises (OR=0.258,95%CI=0.104～0.520) were protective factors for AD. Conclusion Alzheimer’s Disease seems to be related to the income state,frequency of physical exercises,personality,big negative life events,using cookers made of Aluminum.

OBJECTIVE:To investigate the drug use in the inpatients of our hospital and evaluate its rationality.METHODS:By using PASS-nested "Army Health No.1" hospital information system,the drug utilization in these patients was analyzed.RESULTS:Among 32 834 medication orders for 586 inpatients,732(1.50%)were warning ones.CONCLUSION:The drug utilization in the inpatients of our hospital was rational on the whole.PASS satisfies clinical doctors' needs,and the physicians feel satisfied with the system.Nevertheless,there are some problems remain to be tackled.

Objective To investigate the role of nucleotide-binding oligomerization domain-containing protein 1 (NOD1) in inducing insulin resistance in differentiated human adipocytes.Methods Human preadipocytes obtained via liposuction were induced to differentiate into mature adipocytes.iE-DAP,a specific ligand for NOD1,was administered to human adipocytes in culture.NF-κB transcriptional activity and proinflammatory cytokines production were determined by luciferase assay and enzyme-linked immunosorbent assay.Glucose uptake in adipocytes was measured by 2-deoxy-D-[3 H] glucose uptake (P＜0.05).The expression of phosphatidylinositol-3-kinase p85 (PI-3K p85),insulin receptor substrate-1 (IRS-1) and Akt phosphorylations were detected by Western blotting.Results NF-κB transcriptional activity and cytokines such as interleukin (IL)-6,IL-8,and monocyte chemotactic protein 1 secretion were markedly increased after stimulation with iE-DAP (P＜0.05 or P＜0.01).Insulin-induced glucose uptake was decreased with the activation of NOD1 in a dose-and time-dependent fashion.NOD1 activation weakened insulin signal transduction as being revealed by increasing IRS-1 Ser307phosphorylation,reducing protein expression of PI-3K p85,and attenuating insulin-induced phosphorylation of Akt on Ser473 and Thr308in human adipocytes.Conclusion These results indicate that NOD1 activation induces inflammatory response and insulin resistance via IRS-1/PI3-K/Akt signaling pathway in human adipocytes.

Bacillus subtilis is a generally recognized as safe (GRAS) strain that has been widely used in industries including fodder, food, and biological control. In addition, B. subtilis expression system also plays a significant role in the production of industrial enzymes. However, its application is limited by its low sporulation frequency and transformation efficiency. Immense studies have been done on interpreting the molecular mechanisms of sporulation and competence development, whereas only few of them were focused on improving sporulation frequency and transformation efficiency of B. subtilis by genetic modification. The main challenge is that sporulation and competence development, as the two major developmental events in the stationary phase of B. subtilis, are regulated by the complicated intracellular genetic regulatory systems. In addition, mutual regulatory mechanisms also exist in these two developmental events. With the development of genetic and metabolic engineering, constructing genetic regulatory networks is currently one of the most attractive research fields, together with the genetic information of cell growth, metabolism, and development, to guide the industrial application. In this review, the mechanisms of sporulation and competence development of B. subtilis, their interactions, and the genetic regulation of cell growth were interpreted. In addition, the roles of these regulatory networks in guiding basic and applied research of B. subtilis and its related species were discussed.
Bacillus subtilis ; genetics ; physiology ; Gene Regulatory Networks ; Metabolic Engineering ; Spores, Bacterial ; physiology

0.05). The rate of RCC after HHSSCT was 4.7% in study group; after second NS soaking, the rate of RCC was 19.1% in control group. The difference between the two groups was statistically significant (P

Objective To investigate the diagnostic value and safety of bronchovideoscope in the pediatric upper airway obstruction.Methods Bronchovideoscope was performed in 91 pediatric patients with upper airway obstruction.The etiology was analyzed and summarized.Results (1) Our study showed that the etiology of pediatric upper airway obstruction were as follow in turn:congenital laryngo-trachemalacia (45 cases),subglottic foreign body (13 cases),laryngotracheal occupying lesion (9 cases),vocal area edema (6 cases),tracheal stenosis (5 cases),laryngopharyngeal lesion (3 cases of retropharyngeal abscess,2 cases of tumor),vocal area hyperplasia (3 cases),subglottic stenosis (2 cases),glottic paralysis (2 cases),laryngeal web (1 case).(2) The common etiology of pediatric upper airway obstruction was different with age.Neonatal period:glottic paralysis,laryngomalacia in turn;1~6 month:laryngo-trachemalacia,tracheal stenosis,subglottic foreign body in turn;1~3 year:subglottic foreign body,vocal area edema,laryngo-trachemalacia in turn,>3 year:laryngeal papilloma.(3) Specific disease had predominant age:laryngo-trachemalacia predominated in infants less than 6 month;tracheal foreign body was most common in child aged 1~3 years old;epiglottic cyst was most common in infant less than 3 month.(4) Complication:during procedure,16 patients had transient decrease of saturation of blood oxygen and 11 patients had tracheobronchial spasm.After procedure,8 patients had transient fever and 6 patients had transient aggravation of laryngeal stridor.Conclusion Bronchovideoscope plays an important role in the diagnosis of pediatric upper airway obstruction.It can directly identify position and nature of disease,and then guide treatment.

Objective: To analyze the expression of CMTM1-v17 in normal prostate tissue and prostate carcinoma originated cell lines, and study its impact on the transactivation of androgen receptor and the possible mechanism. Methods: The expression of CMTM1-v17 in normal prostate tissue was analyzed with immunohistochemistry method. In immounocytochemistry was used to analyze the expression of CMTM1-v17 in prostate carcinoma originated cell lines. Luciferase assay was used to study the impact of CMTM1-v17 on the transactivation of AR and its mechanism. Results: The results of immunohistochemistry showed that CMTM1-v17 was highly expressed in prostate. In prostate cancer originated cell lines, CMTM1-v17 could also be detected in prostate cancer originated cell lines PC3, Du145 and LNCaP. And the results of luciferase implied that the relative luciferase activity of the PC3 cells transfected with 1 ?g and 2 ?g pCDI-CMTM1-v17 plasmids separately were 70.8 and 34.7, compared with the control set as 100. When trichostatin A, the inhibitor for histone deacetylase, was used, the repression of androgen receptor could be recovered with trichostatin A treatment,for the relative luciferase activity of the PC3 cells transfected with 1 ?g and 2 ?g pCDI-CMTM1-v17 plasmids and treated with 100 nmol/L trichostatin A rebound to 90.9 and 86.4. Conclusion: CMTM1-v17 is highly expressed in both normal prostate and prostate carcinoma originated cell lines. It may recruit histone deacetylas to inhibit the function of androgen receptor.