BACKGROUND: Adhesion molecules are closely associated with inflammation. Inflammation due to white blood cell (WBC) infiltration and free radical injury following brain ischemia are believed to be important factors contributing to the pathogenesis of multi-infarct dementia.OBJECTIVE: To determine the level of serum adhesion molecules and free radicals in patients with multi-infarct dementia to explore the relationship between their levels and multi-infarct dementia.DESIGN: A case-control trial.SETTING: Department of Neurology, Second Affiliated Hospital of Jilin University.PARTICIPANTS: Totally 82 patients with multi-infarct dementia were hospitalized in the Department of Neurology, Second Affiliated Hospital of Jilin University between January 2000 and December 2004. These patients included 32 cases of mild dementia, 21 of moderate dementia, and 29 of severer dementia. The normal controls were 23 concomitant healthy volunteers who came for routine physical examination.METHODS: Enzyme-linked immunosorbent assay (ELISA) and electron spin resonance were used to determine the level of serum soluble intercellular adhesion molecules (ICAM) and vascular cell adhesion molecules (VCAM), as well as oxygen free radical concentration in the normal controls and patients with multi-infarct dementia, and the association between the severity of the illness and the levels of adhesion molecules and oxygen free radicals was analyzed.MAIN OUTCOME MEASURES: Serum levels of ICAM-1 and VCAM-1 and oxygen free radical concentration in the two groups.RESULTS: Totally 82 patients with multi-infarct dementia and 23 healthy controls were included in this study and all enter the result analysis. In multi-infarct dementia patients, the serum levels of soluble ICAM-1 and VCAM-1 and oxygen free radical concentration [(469.00±76.33), (196.00± 45.91) and (1 103.30±98.96) μg/L, respectively] were significantly higher than those of the control group [(601.00±76.30), (4.018±1.656), and (1.295±0.718) μg/g, respectively, t=5.517-6.754, P ＜ 0.01], and the 3 indices were positively correlated with the severity of dementia (r=0.659 4,r=0.697 2, r=0.649 4, respectively, P ＜ 0.05); serum ICAM-1 and VCAM-1 levels were positively correlated with the concentration of oxygen free radicals (r=0.714 7, r=0.732 4, respectively, P ＜ 0.01).CONCLUSION: Serum ICAM-1, VCAM-1 and oxygen free radicals might be implicated in the pathophysiological development of multi-infarct dementia, and their levels increase in parallel with the severity of dementia.

Objective To study the (-)-epigallocatechin-3-gallate (EGCG) function on the proliferation of T cells derived from the peripheral blood and synovial fluid of rheumatoid arthritis (RA) and RA-related cytokine levels and the role of EGCG on RA synovial fibroblasts (FLS) proliferation was investigated. Methods ① Mononuclear cells from RA peripheral blood (30 cases) and synovial fluid (23 cases)were isolated. Blank group, negative control group, positive control methotrexate (MTX) group and therapeutic group with three different concentrations of EGCG were set up. Incorporated isotope 3H was used to test T cell proliferation from RA-PBMC and SFMC. ELISA assay was used to test cytokine (TNF-α, IFN-γ, IL-1, IL-6 and IL-17A) levels. ② MTT assay was used to test FLS proliferation from RA synovial tissue (8 cases).Results ① The CPM value of the high-dose group of EGCG in the peripheral blood and synovial fluid of RA patients was [ ( 15 136±2910), ( 11 587±3135 ) ], which was declined significantly than the control group (42856±2127) (P＜0.01). The levels of TNF-α, IFN-γ, IL-1, IL-6 and IL-17A in the high-dose group of EGCG in the peripheral blood were [(321±13), (298±20), (132±12), (197±7), (59±8) pg/ml], which were decreased significantly than those of the control group [ (458±28), (505±26), (346±28), (405±25),(109±13) pg/ml ] (P＜0.05 or P＜0.01 ). The levels of TNF-o, IFN-γ, IL-1, IL-6 and IL-17A in the highdose group of EGCG in the synovial fluid were [(41.4±2.9), (182±16), (56.3±11.0), (34.2±1.9), (44±8)pg/ml ], which was decre-ased significantly than the control group [ ( 388.3± 19.3 ), (469±20), ( 104.2±17.8 ),( 114.5±4.8), ( 104±11 ) pg/ml] (P＜0.05 or P＜0.01 ). ② The level (A) of the high-dose group of EGCG in the FLS was (0.08±0.02), which was declined significantly than the blank group (0.27±0.04) (P＜0.05).Conclusion ① In vitro EGCG can inhibit T cell proliferation from peripheral blood and synovial fluid of RA patients and the TNF-α, IFN-γ, IL-1, IL-6 and IL-17A secretion are decreased. ② In vitro EGCG can inhibit the proliferation of RA FLS.

OBJECTIVETo evaluate the small fiber function in patients with type 2 diabetes mellitus of the early stage by measuring the sensory threshold with the quantitative temperature testing technology.

METHODSTwenty cases of patients with type 2 diabetes with no neurological deficit (DM group) and twenty age and sex-matched healthy controls underwent the detecting of cold sensory threshold (CST), warm sensory threshold (WST), cold pain threshold (CPT), heat pain threshold (HPT) in both inside of their hands.

RESULTSThere was no significant difference in CST, WST, CPT and HPT between left and right inside of hand of the same sample among all the testers. But the four kinds of threshold showed significant difference in the right inside of hand between patients and healthy people ( P < 0.05). In addition, the CST and WST differed significantly in the left inside of hand between the patients and healthy controls while the CPT and HPT showed no significant difference in the left inside of hand between them. Patients group and control group with CST and WST on the left side of the comparison difference was statistically significant (P < 0.05).

CONCLUSIONQuantitative analysis of temperature sense threshold can not only reflect increase of the pain threshold value, also can reflect its decrease, i. e. hyperalgesia, which may help to diagnose small fibrous peripheral neuropathy recognition, especially in early diabetic peripheral neuropathy.

Case-Control Studies ; Cold Temperature ; Diabetes Mellitus, Type 2 ; physiopathology ; Diabetic Neuropathies ; diagnosis ; Hot Temperature ; Humans ; Hyperalgesia ; Pain Threshold ; Sensory Thresholds ; Thermosensing

Objective Improve the level of education of medical information to promote faster and better development of medical information.Methods According to the disciplinary development lag,weak teachers' drawbacks of medical education and medical information technology status quo,research talent development solutions.Results Departure from the practice of medical information is proposed to establish and improve the incentive mechanism,curriculum system and teaching content changes,the establishment of hospital information system simulation laboratory recommendations.Conclusion For the development and maturation of the education of medical information,to promote the cultivation of medical information,certain referential significance.

Objectives To observe the anesthetic effects of an improved anesthetic method on goat by comparing with the original method, and to provide theoretical and practical reference for anesthesia during the establishment of goat models.Methods A total of 72 goats were selected to make tibial fracture models, 36 were enrolled as group A and others as group B.The group A was injected with Sumianxin and diazepam.The group B was injected with Sumianxin, diazepam and pumped propofol by intravenous pump.The times of animal struggle, total dose of additional Sumianxin, death rate, and recovery time were evaluated.Results The death rate of group A was 16.67% and there was no death in the group B.The times of struggle, the total dose of additional Sumianxin and the recovery time of the group A were higher than group B, showing a significant difference (P<0.05).Conclusions The improved anesthetic method can decrease the times of goat struggle times, reduce the dose of anaesthetics, and lower the death rate.

Objective To investigate the distribution of ompA gnne in 15 Chinese reference standard strains belonging to 15 serogroups of Leptospira interrogate, and to express recombinant OmpA ( rOmpA ) and to identify immunogenicity and immunoprotection of rOmpA. Methods Genomic DNAs from different leptospiral strains were extracted by phenol-chloroform method. Entire ompA gene fragments from the strains were amplified by PCR and then sequenced after T-A cloning. A prokaryotic expression system of ompA gene from L. interrogans strain 56601 was constructed, and the expression and yield of rOmpA were determined by SOS-PAGE plus Bio-Rad Agarose Image Analyser. Rabbits were immunized with rOmpA for obtaining antiserum, and immunodiffusion test was used to measure the antiserum's titer. Western blot assay was performed to determine the immunoreaetivity of rOmpA with the antiserum against rOmpA and antiserum against whole cell of L. interrogans strain 56601, while mi-croscopic agglutination test (MAT) was applied to detect the cross agglutination to the 15 L. interrogans strains. A leptospire adhering cell model and a leptospire infecting guinea pigs model were used to determine the adhesion-bloc-king effect of rOmpA antiserum and immunoprotection of rOmpA. Results All the 15 L. interrogans strains, but not L. biflexa strain Patoe Ⅰ , had sequence conserved ompA genes. The yield of rOmpA was approximate 20% of the total bacterial proteins, rOmpA could induce rabbits to produce antibody and immunodiffusion titer of the anti-serum was 1:4. Both antisera against rOmpA and against whole cell of L. interrogans strain 56601 were able to pro-duce positive Western blot signs to rOmpA, and the former offered 1 : 20-1 : 320 MAT titers to the 15 L. interrogans strains. 1: 10-1:160 dilutions of rOmpA antiserum could efficiently block L. interrogans strain 56601 adhering to J774A. 1 cells, and 100 μg and 200 μg rOmpA displayed 50.0% and 75.0% immunoprotective rates in the infee-ted guinea pigs. Conclusion ompA gene only exists in genomes of different pathogenic L. interrogans serogroups. rOmpA has relatively stronger antigenicity, cross immunoreactivity and certain immunoprotection, implying that this recombinant protein may be used as a candidate antigen for developing universal genetic engineering vaccine of L. interrogans.

A turn on model of electrochemiluminescence ( ECL)-Pb2+ biosensor based on G-quadruplex of aptamer probe was developed by using quantum dots ( QDs) as labels. The ECL-Pb2+ biosensor was prepared by immobilizing a hairpin aptamer probe with a thiol group at 5 '-end and an amino group at 3 '-end on gold electrode via an Au-S bond. In the presence of Pb2+, the G-rich hairpin aptamer probe opened the stem-loop and formed G-quadruplex, which exposed the amino group at 3'-end and then covalently linked to the carboxyl group on the surface of CdS quantum dots. The fabrication and reaction process of the Pb2+ biosensor were characterized. The responsive ECL intensity was linearly related to the Pb2+ concentration in the range of 2. 0×10-10-5. 0×10-8 mol/L, with the detection limit of 3. 74×10-11 mol/L. In addition, the ECL biosensor exhibited high sensitivity, good selectivity, satisfying stability, and repeatability.

Objective Promote the use of medical record information, the depth of excavation,provide strong support for clinical research and hospital management.Methods Medical Record Information lower utilization reasons put forward need to build the whole structure of the paperless electronic medical records, electronic medical records for research concluded that the key to building elements to provide support.Results Pointed out that the construction of paperless electronic medical records from the storage structure of the building medical record systems, and data warehouse technology combined start, outpatient and inpatient medical records while achieving interoperability, building regional health care, improve follow-up system, and finally pointed out the key technical implementation.Conclusions It is to promote the utilization of medical records, medical records for research to improve support efforts to promote development and progress of medicine and enhance the hospital's soft power has great significance.

Objective To ratiocinate the formula of relationship between opening size of laminoplasty and the increment of sagittal canal diameter following double-door cervical laminoplasty and to predict the increment of sagittal canal diameter and the cross sectional area of canal according to the opening size of laminoplasty.Methods Twenty patients (12 males and 8 females) with multilevel cervical spondylotic myelopathy had undergone double-door cervical laminoplasty (C3-C7 in 9 patients and C3-C6 in 11 patients,89 segments) in our institution between September 2010 and January 2013.The formula describing the relationship between the opening size of laminoplasty and the increment of sagittal diameter was deduced.The parameters of pre-and post-operative computed tomography scans of 20 patients who had undergone laminoplasty surgery were measured by picture archiving and communication system (PACS) software,and the increment of sagittal canal diameter and the cross sectional area of canal were predicted when the opening size of laminoplasty were 6 mm,8 mm,10 mm,12 mm,14 mm and 16 mm according to the formula.Results Increment of sagittal canal diameter and canal area respectively showed significant difference in the same segment laminoplasty.Increment of sagittal canal diameter between various groups in the same segment (C3-C6) showed significant difference.Increment of sagittal canal diameter between the opening size of 14 mm and 16 mm in C7 laminoplasty showed no significant difference.Increment of sagittal canal diameter was increased steadily following C3-C7 double-door laminoplasty with opening sizes of 6 mm,8 mm,10 mm,12 mm,14mm and 16mm,but the increasing trend in sagittal canal diameter diminished gradually.Conclusion Increment of sagittal canal diameter and canal area following C3-C7 laminoplasty can be accurately predicted according to the opening size of laminoplasty by this formula.The formula can help operator to perform double-door cervical laminoplasty based on accurate individual laminoplasty opening size,which prevents inadequate or excessive opening.

BACKGROUND:Recent studies found that some factors play important role in the process of denervated muscle atrophy, especial y the feak-headbox transcription factor, is the key element to regulate the denervated muscle atrophy.
OBJECTIVE:To investigate the effect of RNA interference on inhibiting feak-headbox 3a gene expression in vitro.
METHODS:The myoblast cel line L6 were cultured in the 6-wel cel culture plates, then pEGFP-N1 and smal
interfering RNA recombinant plasmid with the same ratio was transfected under the Lipofectamine2000 mediation to optimize the transfection efficiency of the detection system;2μg smal interfering RNA recombinant plasmid of feak-headbox 3a gene were transfected with myoblast cel line L6 for 48 and 72 hours.
RESULTS AND CONCLUSION:At 48 hours after pEGFP-N1 and siRNA recombinant plasmid transfection, a large number of bright green fluorescent displayed under fluorescence microscope with higher transfection efficiency. Real-time quantitative PCR analysis showed that there were significant differences in the sequences of feak-headbox 3a-Ⅰ, feak-headbox 3a-Ⅱ, feak-headbox 3a-Ⅲ, feak-headbox 3a-Ⅳ on feak-headbox 3a mRNA when compared with the control group at 48 and 72 hours after trasfection (P<0.05), and the inhibition effect was more significant at 72
hours after transfection when compared with that at 48 hours after transfection. Western Blot gray analysis showed that there were significant differences in sequences of feak-headbox 3a-Ⅰ, feak-headbox 3a-Ⅱ, feak-headbox 3a-Ⅲ,
feak-headbox 3a-Ⅳ on feak-headbox 3a mRNA when compared with the control group at 48 and 72 hours after
trasfection (P<0.05), and the inhibition effect was more significant at 72 hours after transfection when compared with that at 48 hours after transfection, which was same with the effect on mRNA level. RNA interference in vitro can
significantly inhibit the fork-head transcription factor feak-headbox 3a gene expression, and the inhibition effect of feak-headbox 3a gene smal interfering RNA recombinant plasmid transfected with the sequence on the mRNA and protein level of feak-headbox 3a is not clear, which can provide new idea for the gene therapy of RNA mediated denervated skeletal muscle atrophy.