Objective To investigate the differences in psychological problems and behaviors between asth-matic and nonasthmatic children,and to evaluate the psychological interventions. Methods Behaviors and psycholog-ical actions were investigated in the 126 children with asthma and 126 healthy children, after psychological interven-tions of 3 and 6 months,the effects were evaluated in 28 asthmatic children. Results Behavioral and psychological problems were more prevalent in asthmatics than nonasthmaties, psychological and behavioral problems were different in asthmatic children of different severity and gender, psychological and behavioral interventions as well as drug ther-apy have beneficial effects on controlling of asthmatic symptoms and improving the pulmonary function, it could cor-rect and cure the bad behavioral and psychological problems and improve the quality of life. Conclusion Asthma contributes to the development of behavioral and psychological problems in children. Psychological and behavioral in-tervention in children with asthma has many positive effects on controlling the symptoms and improving the pul-monary function,it could correct and cure the bad behavioral and psychological problems and improve the quality of life.

Objective To collect the basic information on publications in Chinese Journal of Perinatal Medicine,and understand the current situation and set the goals for the future. Methods Information on all publications in this journal from 1998 to 2007 was collected.The distribution of all publications,Price Index and relative data were analyzed. Results There were 1368 publications altogether during the past 10 years.The first six kinds of papers were original articles(508,31.7%),short articles(258,18.9%),case reports(194,14.2%),reviews(122,8.9%),experimental studies(90,6.6%)and brief communications(83,14.2%).47.9% of all publications were from Beijing,Guangdong and Shanghai.The first three areas who had the most submissions were Beijing,Shandong and Guangdong in 2007.The citation frequency analysis showed that 708 publications were cited at 1east once and only two were cited over 80 times.53.4% of all cited publications were original articles and experimental studies. Conclusions Original articles and short articles are the two main types of publications in this journal,however original articles and experimental studies contributed to half of the publications being cited.Publications in this journal are focused in few areas and this might be related to the number of submissions.

Objective To study the effects of mindfulness behavior training on coping style and illness uncertainty in patients of shoulder hand syndrome (SHS) after ischemic stroke.Methods 65 cases with SHS were randomly divided into two groups by digit method: the control group (n=32) and experimental group (n=33).Patients in control group only received routine rehabilitation, while patients in experimental group also received mindfulness behavior training.The daily life, medical coping style, illness uncertainty and mindfulness were evaluated respectively by Barthel Index (BI) , Medical Coping Style Questionnaire (MCMQ) , Illness Uncertainty Scale (IUS) and Mindful Attention Awareness Scale (MAAS).Results Before training, there were no significant difference in BI,MCMQ,IUS and MAAS (P＞0.05).After treatment, scores in BI improved significantly in the experimental group than that in the control group(72.4± 11.6 vs 62.9±10.1) ,scores in IUS improved significantly in the experimental group than that in the control group(69.3±9.3 vs 86.9±7.2) and scores in MCMQ and MAAS improved significantly in the experimental group than that in the control group(P＜0.05).26 cases whose Barthel index was more than 60 points in experimental group after treatment were found while 17 cases whose Barthel index was more than 60 points in control group were done after treatment (x2 =6.415, P＜0.05).Conclusion Mindfulness behavior training can regulate the patient coping style and weaken illness uncertainty,and improve functions rehabilitation.

Objective To investigate the effects of the memory intervention on dysmnesia of elder people in 6 months as well as the intervention method and intervention duration. Methods 100 elderly people in Tangshan communities with memory impairment, with score less than 22 by Rivermead Behavioural Memory Test Second Edition( RBMT Ⅱ) ,were randomly selected and divided into the intervention group(n=50) and control group( n =50). The intervention group were given personalized memory training while the control group just went its normal course. Each group was evaluated with score by RBMT Ⅱ after 3 and 6 months respectively. All the data were made analysis of variance and t test using SPSS 13.0 software. Results After 6 months of intervention, the evaluation scores in the following aspects of the standard score, immediate story recalling, immediate route recalling, letter recalling,orientation, date and appointments recalling, delayed story recalling, name recalling and the hidden recalling were significantly higher than those of control group(P＜ 0. 01 or P＜ 0.05 ). The scores in the standard score,immediate story recalling, imformation recalling, appointments recalling, delayed story recalling, name recalling after 6 months of intervention were significantly higher than those before intervention(P＜ 0.01 or P＜ 0.05). The RBMT Ⅱ score increased significantly from (17.10±2.38 ) before the intervention to ( 19.90 ±2.17) after 3 months of intervention and to( 21.63 ± 1.45 ) after 6 months (P＜0.01). Conclusion Memory intervention is an effective method worthy to be widely spread in the communities in improving the memory of elderly people with dysmnesia.

Objective To investigate the effect of Lokomat Robotic Gait Training System on motor, gait and range of motion (ROM) for stroke patients with hemiplegia. Methods 80 stroke patients with hemiplegia were divided into treatment group (n=40) and control group (n=40). The control group accepted routine rehabilitation and the treatment group accepted robotic gain training. They were assessed with Fugl-Meyer Assessment, gait parameter and ROM of hip and knee before training and after 10 weeks of treatment. Results There was no significant difference on all the index before treatment (P>0.05), and improved more in the treatment group than in the control group after training (P<0.05). Conclusion Lokomat Robotic Gait Training System intervention can promote the recovery of walking in stroke patients with hemiplegia.

OBJECTIVETo construct enterohemorrhagic Escherichia coli (EHEC) O157: H7 ppk gene deletion strains and study its biological characteristics.

METHODSThe gene fragment of kanamycin resistance was amplified using a pair of homologous arm primers whose 5' and 3' ends were homologous with ppk gene and kanamycin resistance gene, respectively. EHEC O157: H7 EDL933w competent strains were prepared and transformed via electroporation with the amplification products. The ppk gene was replaced by kanamycin resistance gene using pKD46-mediated Red recombination system. The recombinant strain was confirmed by PCR and sequencing, and its morphology, growth ability and adhesion were assessed using Gram staining, OD600 value and Giemsa staining.

RESULTS AND CONCLUSIONWe established a ppk-deleted EHEC O157:H7 EDL933w strain with kanamycin resistance and compared the biological characteristics of the wild-type and mutant strains, which may facilitate further study of the regulatory mechanism of ppk gene.

DNA Primers ; Escherichia coli O157 ; genetics ; Escherichia coli Proteins ; genetics ; Gene Deletion ; Phosphotransferases (Alcohol Group Acceptor) ; genetics ; Polymerase Chain Reaction

Objective To explore the beneficial effects and mechanisms of neutrophil elastase (NE) and myeloperoxidase (MPO) on lead-induced hepatic inflammation in mice. Methods The specific pathogen free male C57BL/6 mice were randomly divided into four groups： control group, lead-exposed group, NE inhibitor group, and MPO inhibitor group, with three mice in each group. The mice in lead-exposed group, NE inhibitor group, and MPO inhibitor group were intraperitoneally injected with a dose of 10 mg/kg body mass of lead acetate solution, while the mice of control group received an equal volume of 0.9% saline three times per week for four weeks. In the last seven days, mice in both inhibitor groups were intraperitoneally injected with a dose of 40 mg/kg NE inhibitor sivelestat sodium or MPO inhibitor 4-aminobenzoic acid hydrazide (4-ABAH) once per day. Mouse body weight and liver histopathological changes were observed. The mRNA expression of genes associated with inflammation, such as tumor necrosis factor-α (Tnfa), interleukin-1β (Il1b), interleukin-6 (Il6), and nucleotide-binding oligomerization domain-like receptor protein 3(Nlrp3), apoptosis-associated speck-like protein (Asc) and cysteinyl aspartate specific proteinase (Caspase1) in the mouse liver tissues was detected by real-time quantitative polymerase chain reaction. The protein expression of NLRP3, ASC, and CASPASE-1 was detected using Western blotting. Results The activities of mice in all four groups were generally normal, and there was no significant difference in body weight (P>0.05). The results of hematoxylin-eosin staining showed that the cell size of hepatocytes varied in the lead-exposed mice, with indistinct cell boundaries, indicating early inflammatory responses in liver tissues. After intervention with NE or MPO inhibitors, the early inflammatory responses improved in the liver tissues of the mice in both inhibitor groups, with a better improvement observed in MPO inhibitor group compared with the NE inhibitor group. The mRNA expression of Tnfa, Il1b, Il6, Nlrp3, Asc, and Caspase1, as well as the protein expression of ASC, and CASPASE-1 in the livers of mice in the lead-exposed group was higher compared with those in the control group (all P<0.05). Compared with the lead-exposed group, the relative mRNA expression of Tnfa, Il1b, Il6, Nlrp3 and Asc was decreased in the liver tissues of mice in the NE inhibitor group (all P<0.05), while the relative expression of mRNA of Tnfa, Il1b, Il6, Caspase1 and the protein expression of ASC and CASPASE-1 were decreased in the liver tissues of mice in the MPO inhibitor group (all P<0.05). Conclusion Lead induce hepatic inflammation in mice by activating NLRP3 inflammasome. The inhibition of NE or MPO improve the lead-induced hepatic inflammatory responses in mice by alleviating NLRP3 inflammasome activation.