Objective To investigate the relationship between gastroesophageal flap valve (GEFV) and reflux esophagitis(RE).Methods We analyzed 239 cases of RE diagnosed by endoscopy in our hospital from January 2007 to December 2009.RE was classified by Los Angeles classification system and GEFV by Hill system.The association of GEFV with RE was analyzed.Results The overall incidence of abnormal GEFV was32.9% (316/960) and that of RE was 24.9% (239/960).The incidence of severe RE ( grade C and D) in abnormal GEFV group was significantly higher than that in normal GEFV group (23.1% vs.2.4% , P = 0.000).RE grades were positively correlated with GEFV grades (r = 0.308, P = 0.000 ).The incidence of abnormal GEFV in RE patients was higher than that in non-RE (65.3% vs.22.2% ,P = 0.00 ).In terms of gender, there were more males than females in both RE group (63.6% vs.36.4% ) and abnormal GEFV group (60.1% vs.39.9% ).Additionally, incidence of RE increased with age, i.e.positively correlated with age (r=0.214,P =0.000).The incidence of abnormal GEFV also increased significantly in those over 30 years old, i.e.positively correlated ( r = 0.129, P = 0.000).Conclusion There is correlation between GEFV abnormality and RE.GEFV provides useful information for assessment and prediction of the reflux status of the patients.

Objective: To study correlation among serum levels of lipoprotein a[Lp(a)], uric acid (UA) and cardiac function in patients with acute myocardial infarction (AMI) complicated diabetes mellitus (DM).Methods: A total of 70 AMI+DM patients were enrolled as AMI+DM group, 60 pure AMI patients were enrolled as pure AMI group, 60 pure DM patients were enrolled as pure DM group, and 60 healthy people were selected as healthy control group.According to NYHA cardiac function class, AMI+DM patients were divided into class I~II group (n=58) and class III~IV group (n=12);according to their prognosis, they were divided into no cardiovascular event group (n=54) and cardiovascular event group (n=16).Serum Lp(a) and UA levels were measured in all group, and their correlation were analyzed.Results: Serum Lp(a) and UA levels of AMI+DM group were significantly higher than those of healthy control group, pure AMI group and pure DM group, and those of pure AMI group and pure DM group were significantly higher than those of healthy control group, P<0.01 all;Pearson compared with class I~II group, there were significant rise in serum levels of Lp(a)[(183.28±19.96) mg/L vs.(335.65±22.71) mg/L]、UA[(287.45±21.82) μmol/L vs.(437.79±26.72) μmol/L]in class III~IV group (P<0.01 both);compared with no cardiovascular event group, there were significant rise in serum levels of Lp(a)[(220.75±25.72) mg/L vs.(423.97±30.81) mg/L]and UA[(308.49±21.82) μmol/L vs.(442.97±29.75)μmol/L]in cardiovascular event group, P<0.01 both;Pearson correlation analysis indicated that serum Lp(a), UA levels were significant positively correlated with cardiac function class (r=0.410, 0.412, P<0.05 both), and serum Lp(a) level was significant positively correlated with UA level (r=0.496, P=0.023) in AMI+DM patients.Conclusion: Serum Lp(a), UA levels are closely correlated with cardiac function in AMI+DM patients, which can be used as indexes diagnosing and monitoring disease progress.

Humans ; Jaw ; surgery ; Osteogenesis, Distraction

Objective To study angelica polysaccharides (APS) for mobilizing peripheral blood hematopoietic stem cell in BALB/c mice. Methods Techniques of peripheral white blood cell (WBC) and lymphocyte (LC) count, immunocytochemistry, flow cytometry, and hematopoietic cell culture in vitro were used to observe the APS mobilization. Results The numbers of WBC and LC in APS group were markedly higher than that in NS group (P

Objective To investigate the effects of sevoflurane on the systemic inflammatory response and cardiopulmonary function in septic shock rats. Methods Thirty-two SD rats, 8-10 months old, weighing 250-300 g, were randomly divided into 4 groups (n = 8 each): sham operation group (group S), cecal ligation and puncture (CLP) induced septic shock group (group CLP) , sevoflurane I group (group SEV, ) and sevoflurane II group (group SEV,). The abdomen was opened but CLP was not performed in group S. The septic shock was induced by CLP as described by Baker et al. Group SEV, and SEV, inhaled 2.4% sevoflurane for 30 min at 1 h and 3 h after the successful establishment of the model respectively. At 1, 3 and 5 h after septic shock, MAP and HR were recorded and arterial blood samples were taken for blood gas analysis and determination of plasma concentrations of TNF-α, IL-1, MDA and NO. The left ventricular end-diastolic diameter (LVEDD), left ventricular end-systolic diameter (LVESD), left ventricular fractional shortening (LVFS) and cardiac output (CO) were also detected 5 h after septic shock. The animals were killed after the detection of cardiac function. The lungs were removed for determination of W/D lung weight ratio and Evans blue (EB) content. The tissues from the heart, lung, liver and kidney were taken for detection of NF-kB activity by electrophoretic mobility shift assay (EMSA) ResultsMAP was significantly lower, HR higher, LVEDD, LVESD, LVFS, CO, pH value, PaO2 and PaCO2 lower, and W/D lung weight ratio, EB content, plasma concentrations of TNF-α, IL-1, MDA and NO, and NF-kB activity in the heart, lung, liver and kidney tissues higher in group CLP, SEV, and SEV2 than in group S (P < 0.05). NF-kB activity in the heart, lung, liver and kidney tissues and plasma concentrations of TNF-α, IL-1, MDA and NO were significantly lower in group SEV, than in group CLP and SEV2 ( P < 0.05 ), but no significant differences were found in the other indices between group SEV, and CLP and between group SEV1 and SEV2 ( P > 0.05). Conclusion Inhalation of 2.4% sevoflurane for 30 min 1 h after septic shock can inhibit the systemic inflammatory response slightly, but can not improve the cardiopulmonary function in rats with CLP-induced septic shock.

Platelet activating factor(PAF), a potent phospholipid mediator of inflammation, has diverse physiological actions and participates in many diseases in vivo . In recent years, it has been revealed that PAF system involve in the expression of keratinocytes function and reaction of skin inflammation. Therefore, PAF system was found closely associated with inflammatory skin disease. Keratinocytes could express functional PAF receptors (PAF R) and involve in the action of epidermis cytokine system. The interaction between PAF system and other inflammatory mediators can lead to skin inflammatory cascade.

Objective: To study the effects of mechanical strain on the proliferation of human osteoblasts. Methods: Cloned MG 63 human osteoblasts were cultured and seeded at 10 5/well in 6 well Bioflex cell cuture plates. Subsequently, the cells were exposed to mechanical strain stimulation (at 6%, 12% and 24% elongation rate respectively) for 24 hours using Flexercell 3000 Cell Stretching Unit. MTT colorimetric method was used to assess the proliferation of the cells. Results: The proliferation of MG 63 cells was significantly increased 24 h after mechanical strain treatment( P

Objective To diagnose limb-girdle muscular dystrophy type 2A(LGMD2A)using Western blot with micro-sample.nethods Skeletal muscle specimens of 73 cases of progressive muscular dystrophy with prominent proximal muscle involvement were obtained by open biopsy,and underwent histochemical,immunohistochemical stains with anti-dystrophin-N,C,R,α,β,γ,δ-sarcoglycan,dysferlin,caveolin-3 monoclonal antibodies.Twenty-nine cases were excluded with deficiency of dystrophin,sarcoglycans,dysferlin and caveolin-3,then Western blot and immunoreaction were performed with anti-calpain-3,caveolin-3 monoclonal antibodies.Results Ten cases with LGMD2A were diagnosed,all presenting muscle weakness of the proximal limb and elevated creatine kinase in vacant levels.and electromyography showed myogenic change.Histochemical stains showed variation in fiber size,different extent of degeneration,regeneration and necrosis,increased connective tissue elements,while lobulated fibers presented in 6 cases.Immunohistochemical stains identified dystrophin,sarcoglycans,dysferlin and caveolin-3 expressed normal in muscle fibers.Western blot,compared with the control,confirmed that the bands at 94 000 were absent(8 cases)or partly(2 cases)deficient:The additional bands at 30 000expressed weakly;The bands at 22 000 were normal.Conclusion Western blot analysis with microspecimen of skeletal muscle is an effective modality to diagnose LGMD2A,and is suitable to diagnose the sub-type of LGMD in clinic.

Objective To study the genes of a carbapenem-resistant Klebsiella pneumoniae strain isolated from a patient. Methods The antibiotic sensitivity test of a multidrug-resistant Klebsiella pneumoniae strain was done according to K-B and MIC method. Metallo-β-lactamase was detected by Modified Hodge Test and EDTA-disk synergy test. Both nine genes encoding β-lactamases, including blaKPC, blaIMP , blaVIM , blaSME , blaCTX-M , blaSHV, blaDHA , blaACT, Class Ⅰ integrase and Class Ⅰ integron were detected by PCR. Positive products were sequenced. Results The Klebsiella pneumoniae was resistant to carbapenems, cephalosporins, cefoxitin, ampicillin and trimethoprim/sulfamethoxazole. Only susceptible to aztreonam, gentamicin, tobramycin, amikacin, ciprofloxacin and levofloxacin. The blaIMP-1 and Class Ⅰ integron were positive. The blaIMP gene was identified by PCR and DNA sequencing confirmed that the gene belong to IMP-1 type Metallo-β-lactamase gene. The strain also carried Class Ⅰ integron and IMP-1 was located in Class Ⅰ integron 5'. Conclusions It is the first detection of IMP-1 Metallo-β-lactamase in Klebsiella pneumoniae. The production of IMP-1 carbapenemase is the main mechanism of carbapenem-resistant in Klebsiella pneumoniae, and multidrug resistance is related to ClassⅠ integron.

With the development of the time,its original management system problem revealed. Then how to reform in order to play its due role? The author pondered on the college student associations'development prospects and ideas by analysing its status and the plight of its development.