1.Neuroendocrine biomarkers for neurological outcomes after stroke
International Journal of Cerebrovascular Diseases 2014;22(12):934-937
Stroke is characterized by high incidence,high morbidity,and high mortality.It seriously threats to human life and the quality of life.Studies have confirmed that neuroendocrine dysfunction occurs after the onset stroke and dkectly inpact on the outcomes of patients.It has great value for identifying the clinical conditions and outcomes,and has a guiding significance for clinical treatment.This article reviews neuroendocrine biomarkers of the neurological outcomes after stroke.
2.The expression of Survivin,PTEN in tongue squamous cell carcinoma and the correlation with vascular endothelial growth factor and its clinical significance
Yong JIANG ; Qingliang FENG ; Cong ZHU
Chinese Journal of Postgraduates of Medicine 2012;35(18):1-3
Objective To evaluate the expression of Survivin,PTEN in tongue squamous cell carcinoma (TSCC) and the correlation with vascular endothelial growth factor (VEGF) and its clinical significance.Methods The expression of Survivin,PTEN and VEGF of 72 TSCC samples and 15 normal tongue mucosa (NTM) samples were detected by immunohistochemical method.Results The positive expression rate of Survivin,PTEN and VEGF in TSCC were 66.7%(48/72),61.1%(44/72),70.8%(51/72)respectively,while the positive expression rate in NTM were 0,100.0% (15/15),0.There were statistical significance between the rate in TSCC and NTM respectively (P <0.01 ).The expression of Survivin and VEGF in TSCC were positively correlated with TNM stage,histological grade and lymph node metastasis (P< 0.05 or < 0.01 ),while the expression of PTEN had negative correlation with them (P< 0.05 or < 0.01 ).The expression of Survivin was positively correlated with VEGF expression in TSCC (r=0.6482,P<0.01),while the expression of PTEN was negatively correleted with VEGF expression (r =-0.4027,P <0.01).Conclusions The expression of Survivin and PTEN in TSCC are associated with tumor occurrence and development closely,and are both significantly correlated with VEGF.Joint detection of Survivin,PTEN and VEGF have important reference value in clinical diagnosis,metastasis and prognosis of TSCC.
3.Management of fracture complications:a problem merits more attention
Bing-Fang ZENG ; Cong-Feng LUO ;
Chinese Journal of Orthopaedic Trauma 2004;0(07):-
Complications are always likely to occur in the treatment of fractures. Once fracture-related complications occur,their management will be difficuh,resulting in a long handling process that increases physical and financial pain on the patients.Fea- turing“management of fracture-related complications”,this issue intends to draw attention from orthopaedists to the challenging task of prophylaxis and treatment of such problems in clinic.Not only non-union,malunion,heterotopic ossification,bone necrosis but also such systemic complications as deep vain thrombosis,soft tissue infection and necrosis are discussed.They involve long tubular bones,pelvic,proximal femur,tibial plateau and calcaneum.Authors introduce their experience from their clinical practice which can benefit readers a lot.It is well known that an effective prevention is the best treatment.In treatment of fractures,principles must be strictly followed and preventive measures taken throughout the whole process.Once a complication has been detected,therapy should be individualized 1o gain the best outcome.
4.Two dimensional finite element analysis of ceramic veneer bonding layer
Cong FAN ; Hailan FENG ; Li LIU
Journal of Practical Stomatology 1995;0(04):-
Objective: To intimately assess the internal stress distribution in ceramic veneer bonding layer. Methods:Six buccolingual cross section models of the incisor restored with IPS-Empress ceramic veneer were built with the MSC/NASTRAN software. 2D-finite element method was used to analyze the stress distribution regularity of the bonding layer on the models under different functional load. Results: Stress concentration areas of ceramic veneer bonding layer were regularly located on the incisal margin and cervical margin. Under the same condition, incisal load caused highest stresse on the adhesive layer. Following the load shift from incisal to gingival area, the stress was gradually decreased.When the functional load acted on the palate margin of the restoration, the compressive stress on the bonding layer was significantly increased. Different load angle generated stress change in the bonding layer. The shear stress on adhesive layer increased following the horizontal load angle increasing close to the debonding level. Among the different incisal reduction designs there was no significant Von Mises stress variation under the same load condition. However, when the incisal edge was reduced by more than 4 mm, the tensile stresses in the bonding layer greatly increased. Conclusion: Restoration margin should be kept away from the tooth contact area, be exposed to minimal occlusion contact. The functional load should be induced to follow the tooth long axis. Edge to edge occlusion should be avoided. When incisal areas need to be altered, the incisal overlap or butt margin design will not cause any stress problem in the bonding layer. When restoring the incisal defect for more than 4 mm, the bonding agents must be selected carefully.
5.Exploration on post-graduate education of clinical medicine
Liyun ZHANG ; Peijie LI ; Fang LU ; Ailing CONG ; Yugong FENG
Chinese Journal of Medical Science Research Management 2012;25(4):267-268
The development of society raises demands for high-level talents,which requires high level post graduate education.The model of post graduate education is changing from research centered to professional skill centered.The research centered program has a long history and has gained consensus,while the professional skill program is still new.To address the social and economic needs,we explored the professional skill centered post graduate program and report our experience here.
6.Changes of MDA, SOD, TNF-alpha, and IL-1beta in rat brain tissue after concussion.
Feng GAO ; Li ZHAO ; Zhen-Yong GU ; Bin CONG
Journal of Forensic Medicine 2014;30(1):19-22
OBJECTIVE:
To observe the changes of malondialdehyde (MDA), superoxide dismutase (SOD), tumor necrosis factor-alpha (TNF-alpha), and interleukin-1beta (IL-1beta) in rat brain tissue and to explore the mechanism of secondary cerebral injury after brain concussion.
METHODS:
The brain concussion model was established with the pathological changes of rat brain tissue by Weil stain. The expressions of MDA and SOD in brain tissue were examined by photochemical method. The expressions of TNF-alpha and IL-1beta in cerebral cortex and hippocampus were examined by immunochemistry.
RESULTS:
Nerve myelin sheath showed disorder, disruption, gryposis and swelling by Weil stain. Above changes were more severe at 12h. The quantity of MDA in rat brain tissue after concussion was significantly higher than that in the control group. The activity of SOD was significantly lower than that in the control group. The expressions of TNF-alpha and IL-1beta increased more significantly in cerebral cortex and hippocampus in rat brain tissue after concussion than that in the control group.
CONCLUSION
Oxidative stress and inflammatory injury in the rat brain tissue, which may play an important role in secondary cerebral injury after concussion.
Animals
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Brain/metabolism*
;
Brain Concussion/metabolism*
;
Brain Injuries
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Hippocampus
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Interleukin-1beta/metabolism*
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Malondialdehyde/metabolism*
;
Oxidative Stress
;
Rats
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Superoxide Dismutase/metabolism*
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Tumor Necrosis Factor-alpha/metabolism*
7.Summary of the nation-wide autoantibodies test quality survey in 2006
Feng HUANG ; Xianzi CONG ; Xiaofeng LI ; Jianglin ZHANG ; Yuzhen DING
Chinese Journal of Rheumatology 2008;12(6):382-385
objeetive To consecutively understand the current national clinical testing quality and enforce quality-control of auto-antibody detection.Methods Hospitals or departments were recruited by letters or telephone communications:The autoantibodies examined for quality control survey included anti-nuclear antibodies (ANA),anti-double-stranded DNA (A-dsDNA)antibody,anti-extractable nuclear antigens(A-ENA)antobodies,anti-mitochondria antibody(AMA)/anti-smooth muscle antibody(ASMA),and anti-CCP antibody.Each autoantibody was tested in 3 samples, and altogether 15 samples in total for testing.Sample designation and testing results data analysis were double-blinded.Results Fifltv-five hospitals/departments participated in this survey.The accuracy rates for this survey were 92%,89%,96%,72%respectively for ANA,A-dsDNA,AMA/ASMA,and anti-CCP.Anti-ENAs were further divided into anti-RNP,Sm,SSA,SSB and Scl-70 subgroups,and the accuracy rates were 98%,89%,92%,75%and 77% respectively.Conelusion Compared to the previous 3 national surveys.accuracy rates in our country's autoantibody testing is increaseing steadly with more testing items included each year.This indicats that the quality of auto-antibody testing is improving across the country.
8.Study of tumor necrosis factor-αinduced protein 8 like-2 expression in peripheral blood mononuclear cells ;of patients with acute respiratory distress syndrome correlate with disease severity
He HUANG ; Cong FENG ; Zhaotao TIAN ; Yongming YAO ; Tanshi LI
Chinese Critical Care Medicine 2016;28(6):543-546
Objective To demonstrate the effect of tumor necrosis factor-α induced protein 8 like-2 (TIPE2) expression in patients with acute respiratory distress syndrome (ARDS) and its mechanism. Methods A prospective observation was conducted. Thirty-nine patients with ARDS admitted to department of emergency of PLA General Hospital from July 2013 to July 2015 were enrolled, and 35 healthy persons served as control group. The acute physiology and chronic health evaluation Ⅱ (APACHE Ⅱ) score within 24 hours after admission, blood gas analysis, procalcitonin (PCT), and C-reactive protein (CRP) were recorded. The mRNA expressions of TIPE2 in peripheral blood mononuclear cell (PBMC) and myxoma resistance protein 1 (MX1) in plasma were determined by real-time quantitative reverse transcription-polymerase chain reaction (RT-PCR). The correlations were analyzed by Spearman rank correlation analysis. Results The mean of APACHE Ⅱ score in 39 patients with ARDS was 25±3, the mean of PCT was (1.85±0.41) μg/L, and the mean of CRP was (18.0±3.0) mg/L. The TIPE2 mRNA expression in PBMC of ARDS patients was significantly down-regulated as compared with that of healthy control group (2-ΔΔCt: 3.28±0.15 vs. 8.87±0.20, P < 0.001), and the MX-1 mRNA expression in plasma was significantly higher than that of healthy control group (2-ΔΔCt: 39.44±0.46 vs. 20.10±0.32, P < 0.001). It was shown by correlation analysis results that the TIPE2 mRNA expression was negatively correlated with MX1 mRNA expression (r = -0.630, P < 0.001), so as APACHE Ⅱ score (r = -0.781, P < 0.001), but no correlation was found between TIPE2 mRNA and PCT as well as CRP (r value was 0.143 and 0.330, respectively, both P > 0.05). The MX1 mRNA expression was positively correlated with APACHE Ⅱ score (r = 0.893, P < 0.001), but no correlation was found between MX1 mRNA and PCT as well as CRP (r value was 0.230 and 0.210, respectively, both P > 0.05). Conclusion TIPE2 expression was decreased in ARDS patients, which negatively correlate with disease severity, and indicate TIPE2 might be involved in the pathogenic process of ARDS.
9.ICOSL could upregulate immune response in Graves′s disease animal models
Yikai YU ; Yechen FENG ; Muxun ZHANG ; Cong YE ; Wei TU
Chinese Journal of Immunology 2015;(10):1320-1323
Objective:To study the pathological mechanism of the inducible co-stimulator molecular and ligand ( ICOS/ICOSL) in Graves disease animal.Methods:45 out-bred BALB/c mice were randomly divided into three groups with 15 rats in each group;using gene gun to deliver different plasmid injection.Group A was delivered with pCDNA3.0-mICOSL and pCDNA3.0-hTSHR, Group B with pCDNA3.0-hTSHR and null pCDNA3.0 with Group C for immunization as the control group.The concentration of serum free thyroxine immunization was deter mined with immunoassay and serum thyrotropin receptor antibody ( TRAb ) with ELISA, supernatant of IFN-γconcentration in mouse spleen cells was measured with radioimmunoassay,and hTSHR transected CHO cells were incubated to detect the concentration of cAMP to deter mine autoantibody TRAb activity.Results: After plasmid injection serum FT4 level in Group A (0.49±0.25) pg/ml ( q=6.571,P=0.023) was higher than that in Group C,the standard rate was higher than Group B and C (χ2=14.47,P=0.005).IFN-γconcentration of mice spleen cultured supernatant in Group A (1.88±0.41) pmol/L was significantly higher than the other two groups.The activity of autoantibody TRAb in Group A 188.3 (179.7-260.2) %was higher than that in the other two groups ( P=0.027 ) .Conclusion: Exogenous delivery of pCDNA3.0-mICOSL plasmid in GD mice could stimulate the spleen lymphocytes to secrete more IFN-γ,increase the activity of TRAb autoantibodies and might lead to upregulation of immune response in Graves animal model in vivo.
10.Expression of microRNAs in lung homogenates in rats with chronic obstructive pulmonary disease
Bei LI ; Xuan ZHOU ; Li CHEN ; Cong FENG ; Tanshi LI
Chinese Critical Care Medicine 2014;(12):905-909
Objective To determine the expression spectrum of microRNA(miRNA)in the lung homogenate of rats with chronic obstructive pulmonary disease(COPD)or healthy rats,to look for differentially expressed miRNA, and to explore their potential role in pathogenesis of COPD. Methods Twenty male Sprague-Dawley(SD)rats were randomly divided into normal control group and COPD model group,with 10 rats in each group. COPD rat models were reproduced by smoke inhalation as well as intratracheal instillation of lipopolysaccharide(LPS). The samples of the lung were harvested,and the histopathological examination of the right lung was carried out to evaluate the degree of lung injury. Total RNAs were isolated from the left lung. The miRNA expressions in lung tissue of rats with COPD or normal rats were determined by miRNA chip eichnology to screen the miRNA with differential expression, and hierarchical clustering analysis was made. The data were analyzed to study the expression difference of miRNAs between the two groups,and to construct the miRNA-Target network. Results Compared with normal control group, 20 miRNA with increased expression were found in COPD model group,the top 10 were miR-30c-2,miR-199a-5p, miR-30a, miR-145, miR-151, miR-674-5p, miR-214, miR-423, miR-28 and miR-181b, and only miR-376b-3p showed down-regulation. Hierarchical clustering analysis showed that significant differences in individual miRNA in lung tissue between rats of two groups were found. However,similar samples could not be gathered well,thus it may give rise to inconsistency during the sample preparation. Many miRNAs had multiple target genes in miRNA-Target network, such as miR-30c-2, miR-145, miR-181b, miR-181a, miR-181d, miR-199. Conclusions The study reveals that there is a variance of miRNAs expression profile in lung homogenates between COPD group and the normal control group of rats,and many miRNAs have multiple target genes,such as miR-30c-2,miR-145,miR-181b,miR-181a,miR-181d,and miR-199. Therefore,the results may be valuable to centain extent for the interpretation of COPD pathogenesis.