ObjectiveTo investigate the effects of recombinant human erythropoietin (rhEPO) on the apoptosis of human mesenchymal stem cells induced by H2O2 and related cell signaling pathways.Methods After being cultured in vitro, human MSCs were treated with rhEPO.Phosphorylation of ERK1/2,p38 MAPK and PI3K/Akt was detected by using Western blotting.One h after pretreatment with1U/ml rhEPO,cells were cultured in the presence of1mmol/L H2O2 for1h.Cell morphology was observed under the inverted microscopy.Cell apoptosis was determined by using flow cytometry,migration assay was performed in Transwell chambers,and adhesion assay was performed by plastic dishes.ResultsRhEPO could increase phosphorylation of PI3K/Akt pathway in human MSCs,but reduce phosphorylation of p38MAPK.RhEPO had no obvious effect on ERK1/2 pathway and total proteins of Akt and p38MAPK.RhEPO could decrease apoptosis of human MSCs induced by H2O2 (P＜0.01) and the inhibitory effect was abrogated by Ly294002 but not anisomysin.Conclusion RhEPO could protect MSCs from apoptosis. Activation of PI3K/Akt pathway was involved in the effect of rhEPO on apoptosis.

Objective To determine the genotypes of human papillomavirus (HPV) and to estimate their recurrence of condyloma acuminatum (CA) among female in Xi'an.Methods HPV genotype was detected with human papilloma virus genotyping kit in 63 female patients with CA.Follow-up was carried out to observe the recurrence of CA in these patients after CO2 laser treatment.Results Of the 63 specimens,61 (96.83％) were positive for HPV,and a total of 16 HPV subtypes were identified.The predominant genotypes were HPV6 (59.2％),11 (22.95％),42 (8.20％),43 (8.20％),52 (8.20％),16 (6.56％) and 18 (4.92％) respectively.43 cases of single HPV infection was accounted for 70.49％ (43/61),mixed infection in 14 cases was accounted 22.95 ％ (14/61).61 cases of patients with laser treatment,observing the recurrence of cuses after 3-month later,it was found that the recurrence rate in higher risk group and mixed infection group was higher than that in low-risk group.Conclusion HPV6,11 is main HPV infection type of the female patients in Xi'an,the recurrence of CA is higher in patients with high risk HPV than in those with low risk HPV and mixted infection.Mixted infection of HPV and high risk HPV is a risk factor for recurrence of female genital warts in Xi'an region.

OBJECTIVE To investigate the prevalence of metallo-?-lactamase in carbapenem-resistant clinical Pseudomonas aeruginosa isolates.METHODS Sixteen strains of P.aeruginosa isolated from Tianjin General Hospital during 2005-2006 which were resistant to all tested antibiotics besides carbapenem were studied.The general PCR was adopted to amplify the resistance genes of matallo-?-lactamae.Restriction endonucleases performed restriction analysis were used to certify the type of genes of matallo-?-lactamase by different endonuclease recognition site.RESULTS Two of the 16 clinical strains of P.aeruginosa(named P02 and P16) were confirmed bearing IMP-1 metallo-?-lactamase gene detected by PCR amplification and restriction analysis.CONCLUSIONS P.aeruginosa producing IMP-1 metallo-?-lactamase is the major type in our hospital.The hydrolyzing effect of the metallo-?-lactamase is not the main machanism in these carbapenem-resistant P.aeruginosa isolates.

Dysarthria ; etiology ; Encephalitis, Viral ; complications ; Facial Paralysis ; etiology ; Humans ; Syndrome

Acupuncture Points ; Acupuncture Therapy ; instrumentation ; Adolescent ; Adult ; Female ; Humans ; Male ; Middle Aged ; Needles ; Urticaria ; therapy ; Young Adult

ObjectiveTo assess the factors influencing plasma B-type natriuretic peptide(BNP) levelsin patients with chronic atrial fibrillation (AF).MethodsClinical and echocardiographic information weredetected or collected.Level of plasma BNP were measured through immunofluorescence quantitified method in222 CAF patients.The patients were divided into two groups according to left ventricular ejection fraction(LVEF) :LVEF ≥50％ (normal group) and LVEF ＜ 50％ (case groups) .LVEF was detected by transthoracicechocardiography.Fasting Blood Glucose, total cholesterol, triglycerides, highdensity lipoprotein cholesterol, low density lipoprotein cholesterol, creatinine, blood urea nitrogen, uric acid, were measured, and history ofhypertension, diabetes mellitus and smoking, were recorded.ResultsSerum levels of BNP in patients of chronicAF with LVEF ＜ 50％ were significantly higher than those with LVEF≥50％ (Mean Rank, 158.00 and 87.78 ,Z=-7.705, P ＜ 0.001) .In multiple logistic regression analysis, male gender (OR: 13.115,95％ CI 3.382 to50.860,P ＜0.001),history of hypertension(OR:3.710,95％ CI 1.104 to 12.472 ,P = 0.034) ,lower TC(OR: 0.397,95％ CI 0.214 to 0.735, P = 0.003) , LVEF(OR :0.791,95 ％ CI 0.723 to 0.867, P ＜ 0.001) , history ofsmoking(OR: 4.660,95％ CI 1.256 to 17.281, P = 0.021)were significant and independent determinants ofBNP elevation.ConclusionLower LVEF, male gender, history of hypertension and smoking, lower plasma TCare independent predictors of plasma BNP levels in patients with chronic AF.

Objective To analyze clinical characteristics of patients with gastrointestinal bleeding (GIB)and the death-related risk factors.Methods A retrospective analysis Was conducted in 414 patients hospitalized for GIB during a 16-year period of 1994 to 2009.Logistic regression analysis identified predictors of mortality.Results The mean age of the 414 patients is 83.5 years old,ranging from 65 to 96years old.The main causes of GIB were peptic ulcer(33.1%,137/414),gastroduodenal mucosal erosion (28.5%,118/414)and tumor(21.0%,87/414).The main symptom was melena(71.0%,294/414).Drugs that induced GIB were mainly non-steroidal anti-inflammatory drugs,including aspirin(11.1%,46/414),acetaminophen(8.9%,37/414)and indomethacin(1.9%,8/414).14%of patients(58/414) died of GIB in 30 days.The proportion of drug-induced GIB and gastroduodenal mucosal erosion caused GIB had increased significantly during the period of 2004 to 2009(P<0.05).Analysis of 30-day mortality risk showed advanced age,low diastolic blood pressure,high heart rate,low hemoglobin levels at presentation and hemorrhage volume in dead GIB elderly patients were significantly different compared with GIB elderly patients alive.Presence of severe comorbidity(heart failure and renal failure)and caused by cirrhosis and portal hypertension in GIB elderly patients were the only independent predictors of 30-day mortality (P<0.001).Conclusion Death of GIB patients occurred predominantly in elderly patients with severe comorbidities and systemic conditions at presentation.

Non-alcoholic fatty liver disease (NAFLD) is an important type in chronic liver diseases. Its incidence is growing. It is regarded as the liver manifestation of metabolic syndrome, which is closely correlated with the onset of cardiocerehrovascular diseases. The prevention of stroke in patients with NAFLD is very important. Statius are the most important type of medications. They decrease cholesterol synthesis, upregulate low-density lipoprotein (LDL) receptor in the liver and lower the levels of low-density lipoprotein cholesterol (LDL-C) in circulation through inhibiting hydroxy-methyl-glutaryl coenzyme A (HMG-CoA) reductase, and thus effectively reduce the risks of stroke. Besides, the pleiotropy of statins and their effects on cholesterol-related cell signaling pathway may relieve or prevent the progression of NAFLD. There is greater controversy about whether statins can be used in patients with chronic liver diseases because they have some adverse reactions on liver, The evidence available has demonstrated that statins can he used safely in patients with NAFLD, and usually liver enzymes have no need to be monitored. Too much attention on the liver toxicity of statins may result in inappropriate drug withdrawal, and brings about the increased risk of cardiovascular events. So further evaluation is needed for the efficacy and safety of statins in patients with NAFLD.

Objective To investigate which is better for gastroduodenal endoscopic ultrasound (EUS) between right lateral position and left lateral position of patients guided by nurses. Methods A total of 79 patients were randomly assigned to the left and right lateral position groups. Each patient received EUS examination in three parts, which were sinuses ventriculi, duodenal bulb and descendant duodenum. The operating time and the water volume of each patient were recorded in the procedure of EUS. Results Operating time in sinuses ventriculi, duodenal bulb and descendant duodenum of left lateral position group was (9.0±4.0) min, (6.5±3.2) min and (13.6±10.9) min, while (5.7±3.0) min, (3.6± 1.7) min and ( 6.6±5.7) min in right lateral position group, the differences were significant (t=3.098, 2.190, 3.210, P<0.05) . In the meantime, water volume was (892.0±169.5) ml, (898.6±145.9) ml and (1 012.0± 333.2) ml in sinuses ventriculi, duodenal bulb and descendant duodenum of left lateral position group, while (327.1±79.3) ml, (260.6±30.4) ml and (263.8±17.7) ml in three parts of right lateral position group, respectively. Significant differences were found in water volume among subgroups (t=13.798, 11.290, 4.930, P<0.01 or 0.05). Conclusions In the process of EUS for submucosal lesions at gastric antrum and duodenum, right lateral position instructed by nurses can shorten the operating time and make the procedure easier. This might reduce risks of regurgitation, aspiration, and other related complications.