Non-suicidal self-injury is common in adolescents. At present, the pathological mechanism of non-suicidal self-injury is still unclear, and there is a lack of objective biological markers in diagnosis and treatment, which is an urgent problem to be solved in clinical diagnosis and treatment. The magnetic resonance imaging is an important technique to explore the imaging mechanism of non-suicidal self-injury. The purpose of this review is to systematic evaluation of the latest research results of magnetic resonance imaging of non-suicidal self-injury. It was found that non-suicidal self-injury in people without other mental disorders showed abnormal damage in the orbitofrontal, the dorsolateral prefrontal lobe, the medial prefrontal lobe, the ventrolateral prefrontal lobe, the amygdala, the cingulate gyrus, the supramarginal gyrus, the amygdala, the hippocampus, the insular, the corpus callosum, the thalamus, the putamen, the dorsal striatum, the cuneate prefrontal lobe and the right temporal lobe. These areas are the core areas related to emotional processing, decision-making, cognition and movement. Non-suicidal self-injury with other mental disorders such as borderline personality disorder and depression may be affected by underlying diseases and exhibit different damage patterns, which showing abnormal brain regions related to emotional network, decision-making, social cognition and exercise.The results of this review can be helpful for the future study of the magnetic resonance imaging mechanism of non-suicidal self-injury.

Objective To study the percentage and the distribution of nosocomial infection, and susceptibility of related pathogens to antibiotics in patients with systemic lupus erythematosus (SLE). Methods The clinical data of in patients with SLE in our hospital from June, 1990 to June, 1998 were analyzed. The susceptibility of the pathogens to antimicrobial agents was tested by K-B paper dilution method. Results The percentage of nosocomial infection in these cases was 16.1％ . The major pathogens were staphylococcas aureus, Escherichia coli and Candida. The most highly resistant microbes were E.coli, S.arueus and Pseudomonas aeruginosa. Conclusions The nosocomial infection is one of the most common complication of SLE in the in patients. It is necessary to examine the pathogens regularly and use antibacterial agents according to the susceptibility.

Objective To explore the methods in repairing the thenar wounds by microsurgical technique Methods Since 1989, thenar wounds were restored with transfer of superficial or deep palmar arch, recombine of thenar muscle flap Patch of nerve and transplantation of flap on 21 cases Results The thumb and flap were survived The two point discrimination was 5 to 10 mm The thenar muscle streugth reached MRC 4 with satisfactory oppones fuction Conclusion The thenal wounds cna be obtained good effect being repaired by microsurgical technique

BACKGROUND:Health has been paid more and more attention in modern society, the health of those special groups, such as the elderly and the disabled, should also be brought to the forefront. As fitness equipment is more and more popular in contemporary, our focus should be transferred to the use of fitness equipment for these special groups.
OBJECTIVE:To put forward the design strategy of fitness equipment control interface, for the special groups to use common fitness equipment comfortably and conveniently.
METHODS:Based on the research of existing fitness equipment control interface, according to the usage habits and cognitive awareness of special groups on control interface, a new design strategy has been put forward using the general design method and ergonomics.
RESULTS AND CONCLUSION:Based on the existing 45 kinds of exercise bikes, 84 kinds of running machines and 129 kinds of treadmil fitness equipments, we found that these equipments are designed for common users in the aspects of design and production process and control interface. Universal design is a design concept beyond the lack of capacity to meet the different needs of different populations, and designed products can reduce or even eliminate the difference in the ability of special populations and the general population in use. The new strategy makes design of fitness equipment control interface generalized and good man-machine interactive, which can meet the demand of the special groups and help them do fitness exercise to improve their health and body function.

OBJECTIVE To investigate the conditions and associated risk factors of nosocomial infections caused by Stenotrophomonas maltophilia.METHODS Thirty isolates of S.maltophilia causing nosocomial infections were collected and identified with API 20NE test strips.Minimal inhibitory concentration(MIC) of 14 antimicrobial agents against 30 isolates was determined by broth microdilution method.Case-control study and multivariate Logistic regression analysis were used for statistics to verify risk factors of infections caused by S.maltophilia.RESULTS Thirty isolates of S.maltophilia were highly resistant to imipenem,meropenem,cefotaxime, aztreonam and amikacin,but showed certain susceptibility to cefoperazone/sulbactam,piperacillin/tazobactam,trimethoprim-sulfamethoxazole and ticarcillin/clavulanic acid(96.7%,76.7%,73.3% and 60.0%,respectively).The independent risk factors leading to infections of S.maltophilia were mechanical ventilation(OR=7.629) and over 60 days of length of stay(OR=4.466).CONCLUSIONS S.maltophilia shows multiresistance to commonly used antimicrobial agents.The mechanical ventilation and over 60 days of length of stay are the independant risk factors for nosocomial infections caused by S.maltophilia.

Objective To isolate and identify smooth muscle progenitor cells(SPCs) from rat bone marrow and to observe specific expression of smooth muscle progenitor cells during proliferation and differentiation in vitro.Methods MNCs were isolated by density gradient centrifugation from rat marrow and cultured in conditioned nutrient medium,identification was performed by immunofluorescent staining(?-SMA,CD14).Smooth muscle cells specific markers(?-SMA) were checked with Western blotting and Real-time PCR at different time.Results During culturing,cells adhered and became spindle shaped with outgrowth at 4 d and 7 d,and showed typical "peak" "valley" at 14 d.Both ?-SMA and CD14 were positive after 4 d.Expression of ?-SMA was not found at 1 d with Western blotting,but it gradually enhanced at 4 d and reached the peak from 10 d to 14 d,then maintaned high-level at 21 d.The results with Real-time PCR indicated that no expression of ?-SMA mRNA within non-induced cells was found,but after being induced it gradually enhanced at 4 d and got to peak at 14 d,then kept the high-level at 21 d,low-expression at 1 d was significantly different from the other ones(P

OBJECTIVE To study the genotype distribution of CTX-M type ESBLs in ESBLs-producing Escherichia coli. METHODS All 138 strains of E. coli were collected from the First and Third Affiliated Hospitals,Zhengzhou University from 2006 to 2007. The CTX-M type ESBLs genes were amplified by PCR,the products were sequenced after purification. RESULTS Eighty-two of 138 ESBLs-producing E. coli isolates were classified with CTX-M type-ESBLs genes,and there were 53,27 and 2 strains contained only one type,two types and three types of CTX-M ESBLs,respectively. Among CTX-M type-ESBLs genes,they were identified with CTX-M-1(43 strains),CTX-M-14(56 strains),CTX-M-25(7 strains) and CTX-M-38 (5 strains). CONCLUSIONS The most popular type of CTX-M ESBLs in E. coli is CTX-M14 in Zhengzhou,and two or three kinds of genotypes can exist in 1 strain.

To develop a portable oxygen moisture bottle. The bottle adopted a double-tightened and separate structure, whose shell was made of transparent materials. The inner liner was made of PTFE hydrophobic mem-brane filter, which applied a 3-layer structure to inlet oxygen into the shell through the air membrane filter at all directions. The bottle had no requirements for site and high reliability, and the desired use for continuous oxygen inhalation was realized. The bottle has a simple structure, low cost, easy maintenance and high portability, and gains ad-vantages over the traditional one.

Objective To explore the characteristics of endothelial progenitor cells (EPCs) on different scaffolds and to find a new bio-engineered synthetic hybrid scaffold for artificial bio-engineered blood vessels. Methods EPCs were induced from mesenchymal stem cells isolated from rat bone marrow and seeded on ECM scaffold. The surface structure of the scaffold and growth status of EPCs on the scaffold were observed and analysed by electron microscopy. The characteristics and number of those EPCs on different kinds of scaffolds were studied with EPC-specific VWF by immunofluorescence, Western blotting and real-time PCR technique at different time points. Results The cell adhesion rate at 1,3,5 h after seeded on pressed scaffold were higher than that on unpressed scaffolds( P < 0. 01 ). Pressed scaffolds has got a larger cell number( P < 0. 05 )at DIV1, DIV3, DIV7, but there was no significant difference after DIV10. Furthermore, cell shapes of EPCs on pressed scaffolds were more mature and more similar to endothelial cells. A level cell surface on pressed scaffolds was achieved. Western blotting assays revealed EPCs on pressed scaffolds expressed more protein VWF at DIV3, DIV7, DIV10. Real-time PCR results showed EPCs on the two different groups of scaffolds all expressed VWF gene, The quantity of their expression in the two groups were all enhanced after DIV7 (P < 0. 05 ). The quantity of VWF gene expression in the pressed group was much higher than that in the unpressed group at DIV3 ,DIV7,DIV10 (P <0, 01), but there was no significant difference after DIV14. Conclusions Pressed ECM scaffolds can promote adhesion, proliferation and differentiation on EPCs. Pressed scaffolds can be used as the matrix for EPC and fabricated into a novel synthetic tissue bio-engineered vascular scaffold.

To investigate the expression of vaginal IL-23 and its role in experimental murine vaginal candidiasis and its relationship with infection and immune status, immuno-competent (group A) and immuno-suppressed (group B) murine models of vaginal candidiasis were established in estrogen-treated mice. Non-estrogen-treated mice were used as controls (group C). The level of IL-23 p19 mRNA in murine vaginal tissue was determined by RT-PCR. Significantly increased levels of IL-23p19mRNA were observed on the 4th, the 7th and 14th day after inoculation in immuno-competent group when compared with that in control group (P<0.01, P<0.05). However, significant increase of IL-23 p19mRNA were only observed on the 7th day and the 14th day after inoculatuon in immuno-suppressed groups (P<0.05). On the 4th and 7th day, the levels of IL-23 p19mRNA were significantly increased in immuno-competent group than those in immuno-suppressed group (P <0.05). Local IL-23 may play a role in the pathogenesis of murine vaginal candidiasis and has a protective function during infection. Low vaginal IL-23 level may correlate with the increased susceptibility to Candida albicans in immuno-suppressed group.