Aim To study effects of rhomotoxin (Rh) on electrophysiologic parameters in rabbit heart. Methods The rabbit hearts in vivo were injected with Rh 12.5 ?g?kg-1 , 25 ?g?kg-1 or saline iv respectively and the isolated rabbit hearts were perfused by Krebs-Henseleit(K-H) perfusion liquid containing Rh 0.34 ?mol?L-1 or 0.68 ?mol?L-1. The electrophysiologic parameters were observed before and after drug adminitration.Results At 20,40,60 and 80 min after injection of Rh 12.5 ?g?kg-1 iv,the VDT,ERP and RRP had no significant changes; but at 20,40,60 and 80 min after injection of Rh 25 ?g?kg-1 iv a significant prolongation of ERP and (or) RRP was found (P

Objective This study is undertaken to evaluate the changes of serum cytokine levels in different stages of collagen induced arthritis(CIA)rats,to search for the specific proteins related with rheuma- toid arthritis(RA)pathogenesis and inflammation,and to explore the mechanism of RA pathogenesis.Methods Rat cytokine antibody array coated with 19 specific cytokine antibodies was used to examine serum samples at peak and late stage of CIA rats,and were compared to normal cytokine levels.At the same time,ELISA assay for serum TNF-?production was used to verify the array results.Results Among the target cytokines,10 up- regulating cytokines were kept in high expression in different phases of disease,while 1 showed significant change only at the peak of disease.There was no downregnlating cytokines in the results.Serum TNF-?assay results were consistent to the array results.Conclusion Cytokines show different expression in CIA at differ- ent stages,and specific cytokines can be used as the candidates to further study of the RA pathogenesis.This study also provides molecular makers for early diagnosis.

Adenocarcinoma ; diagnostic imaging ; metabolism ; pathology ; surgery ; Carcinoembryonic Antigen ; metabolism ; Diagnosis, Differential ; Follow-Up Studies ; Humans ; Keratin-20 ; metabolism ; Male ; Microfilament Proteins ; metabolism ; Middle Aged ; Phosphopyruvate Hydratase ; metabolism ; Thymus Neoplasms ; diagnostic imaging ; metabolism ; pathology ; surgery ; Tomography, X-Ray Computed

Background The surgery for congenital idiopathic nystagmus has make great progression recent year,but the influence of surgery on visual function is closely concerned.Objective This work was to study the surgeries for congenital idiopathic nystagmus with or without strabismus and explore the effect of horizontal rectus muscle surgery on the visual function and ocular movement in congenital idiopathic nystagmus.Methods This was a case-observational study.Sixty cases with idiopathic congenital nystagmus were enrolled assigned to four groups as follows:The patients of group Ⅰ appeared the head postures of less than 15 ° and heterotropia less than 15△underwent extraocular proprioceptiou resection,and those of group Ⅱ presented with the head postures of less than 20° and heterotropia more than 15△ underwent extraocular proprioception resection and stabismus surgery.In the group Ⅲ,the patients had the head postures of more than 15° and heterotropia less than 15△ underwent Park's surgery and part of them underwent extraocular proprioception resection) and the cases in group Ⅳ were selected with the head postures of more than15° and heterotropia more than 15△ underwent Park' s surgery and strabismus surgery ( part of them underwent extraocular proprioception resection).Baseline and follow-up evaluations included the best distance and near corrected visual acuity,head posture,ocular movement and Titmus stereotest.The examination results were compared between before and after operation.Results One year after operation,monocular and binocular distance visual acuity improved significantly in all four groups ( monocular:t =6.00,8.94,11.76,16.41,P =0.00 ; binocular:t=4.81,P=0.01 ; t =6.27,4.25,4.18,P =0.00 ),but monocular and binocular near visual acuity improved significantly only in groups Ⅲ and Ⅳ after operation compared with before operation ( monocular:t=2.91,P=0.01 ; t =5.32,P =0.00 ; binocular:t =3.36,t =4.30,P =0.00 ).The compensatory head posture from 39 subjects was disappeared after operation,showing an evident difference between before and after surgery ( group Ⅲ:t =29.90,P=0.00;group Ⅳ:t=16.91,P=0.00).Strabismus were corrected rightly for 24 patients and undercorrection for 2 patients.( group Ⅱ:t =29.15,P =0.00 ; group Ⅳ:t =36.79,P =0.00 ).The binocular visual function of 23 cases with the age below 12 years were improved throughout the follow up duration ( t =12.06,P =0.00).Conclusions Park' s surgery,extraocular proprioception resection and strabismus corrective operation can improve the visual function and head posture in congenital idiopathic nystagmus patients.

Background Congenital nystagmus is a common disease threatening visual function.The clinical description of congenital nystagmus is still not enough now. Objective The aim of this study was to report the motor and sensory characteristics of congenital nystagmus. Methods A retrospective clinical case analysis was designed.The clinical data of 376 patients with congenital nystagmus were collected.These patients were diagnosed in Henan Eye Institute from January,2005 to August,2011.The clinical characteristics of patients,including age,pedigree analysis,nystagmus classification,ocular alignment,visual acuity,refractive error,stereoacuity and oscillopia,was summarized.Informed consent from all patients and custodian were obtained. Results The age distribution of most patients was ＞5-10 years and ＞ 15-20 years,with the percentage 24.73％ and 24.20％,respectively.Of 376 patients,sensory defect nystagmus was 172 cases,and that of motor sensory defect was 204 cases.The most common inheritance pattern was autosomal dominant.Conjugate uniplanar horizontal oscillations were found in 73.94％patients,and strabismus was found in 66.36％ in this study.Sensory defected subjects did not show a statistically significantly higher strabismus incidence when compared with the idiopaths (x2 =3.048,P =0.081 ).The binocular distance vision in all the subjects was declined in comparison with normal eyes,the best corrected vision was 0.27 ±0.11 and 0.50± 0.13 in sensory defected nystagmus and idiopaths nystagmus respectively,showing a significant difference( t =16.495,P =0.000 ).The incidence of refractive error in this study was 77.62％.Incidence of astigmatism(75.17％ ) was higher than that of myopia and hyperopia ( 39.03％ and 36.12％ ).No significant difference was seen in refractive error incidence between the sensory defected and the idiopaths (x2 =1.337,P =0.248).Patients of 65.18％ displayed non-stereoacuity or very gross acuity levels (3000) in this study,and the patients with idiopathic nystagmus showed better stereoacuity level in comparison with sensory defected ones (x2 =7.058,P =0.008 ).Five of 313 patients existed experienced oscilopla under binocular viewing conditions.Conclusions Autosomal dominant inheritance is the most common pattern of congenital nystagmus.Conjugate uniplanar horizontal oscillation is thought to be a common type of nystagmus.Incidence of strabismus is higher,and visual acuity and stereoaeuity are worse in congenital nystagmus than in common population.Oscillopia is seldom found in congenital nystagmus.

Objective To discuss human papilloma virus(HPV)prevalence and HPV genotypes distribution and the infection factors,to provide scientific guidance for the prevention and treatment of cervical cancer.Methods From March to November in 2009,605 women received cervical HPV testing in the Tumor Hospital of Harbin Medical University,to obtain specimens of cervical cytology,rapid flow-through hybridization technique (namely Hybribio flow-through hybridization)was used to detect HPV genotypes simultaneously.Single-factor and multivariate factors non-conditional Logistic regression analytic method was used to discuss the relationship between HPV infection of females and age,marital condition,level of education,level of income,occupation,initial age for sex,contraception,number of pregnancies,delivery approach and smoking.Results HPV infection rate was 21.49%(130/605),the positive rate of HPV infection in high-risk subtypes was 15.70%(95/605),the most common type was 5.29%(32/605)in the samples.Single factor non-conditional logistic regression model analysis showed that initial age for sex was the risk factor(X2=4.4618,P<0.05),HPV prevalence increased with a lower initial age for.sex reduced.But there was no significant difference in age,marital condition,education,income,occupation,contraception,number of pregnancy,delivery approach and smoking teams(X2=0.0525,1.8510,1.0348,0.2592,1.1176,1.5664,2.8835,1.4597,2.6161,all P>0.05).The analysis of multivariate factors nonconditional Logistic regression showed that the age of initially having sex,marital status and number of pregnancies were the risk factors(X2=21.6637,8.0574,15.7573,all P<0.05).Conclusions The risk factors for HPV infection are mainly about having sex too young,marital status and number of pregnancies,attention should be paid to screening for HPV.

In this study the chemical constituents of the higher polar sustances from Desmodium caudatum were investigated.The compounds were isolated by using column chromatographies over silicagel, polyamide, ODS, Sephadex LH-20, and preparative HPLC. The structures of these compounds were identified on the basis of NMR and MS spectra. Thirteen compounds were obtained and their structures were identified as vanillin(1), loliolide(2), indole-3-carboxaldehyde(3), salicylic acid(4), swertisin(5), saccharumoside C(6), isosinensin (7), kaempferol 3-O-β-D-glucopyranoside-7-O-α-L-rhamnopyranoside (8), isovitexin (9), vitexin (10), nothofagin(11), resveratroloside (12), and 2"-α-rhamnopyranosyl-7-O-methylvitexin (13). Except for compound 5, the remaining compounds were isolated from D. caudatum for the first time. Compounds 2, 3, 6-8, 11-13 were separated from the genus Desmodium for the first time.
Apigenin ; chemistry ; isolation & purification ; Drugs, Chinese Herbal ; chemistry ; isolation & purification ; Fabaceae ; chemistry ; Molecular Structure ; Saponins ; chemistry ; isolation & purification ; Spectrometry, Mass, Electrospray Ionization

To establish HPLC specific chromatogram and its correlation with the protection effect of Shuanghuanglian on MDCK (Madin-Darby canine kidney) cell injury induced by influenza A virus( H1N1). Nine recipes of Shuanghuanglian based on the official prescription were prepared according to orthogonal test for HPLC analysis and MDCK cells protection experiment separately (cytopathic effect (CPE) method was used for observing the virus infectivity and MTT staining results were used as the determining indexes for drug concentration selection and analyzing cell viability). The results suggested that all the other Shuang-Huang-Lian recipes except recipe1 demonstrate protecting effect on MDCK cell injury induced by influenza A virus (P < 0.01, P < 0.001). Stepwise regression analysis was used for analyzing the relationships between HPLC fingerprint and the protecting effect of Shuanghuanglian on influenza A virus induced MDCK cell injury. Peak 2, 3, 6, 8 and 12 were found to be strongly related with anti-influenza A virus efficacy. Stepwise regression analysis of recipes data and efficacy data showed that Lonicerae Japonicae Flos and Forsythiae Fructus were positively associated with the protecting effect of cells injury. From HPLC fingerprints, we found that peak 2, 3, 12 were from Lonicerae Japonicae Flos and peak 6, 8 were from Forsythiae Fructus. Four peaks were identified through comparing the retention time between the standard and Shuanghuanglian recipes, and they were chlorogenicacid, cryptochlorogenic acid, forsythoside B and 3,4-dicaffeoylquinic acid respectively. Caffeic acid derivatives in Lonicerae Japonicae Flos and Forsythiae Fructus were found to be greatly correlated with anti-influenza A virus efficacy and maybe the substance basis of Shuanghuanglian.
Animals ; Antiviral Agents ; analysis ; pharmacology ; Chromatography, High Pressure Liquid ; methods ; Dogs ; Drugs, Chinese Herbal ; analysis ; pharmacology ; Forsythia ; chemistry ; Influenza A Virus, H1N1 Subtype ; drug effects ; physiology ; Lonicera ; chemistry ; Madin Darby Canine Kidney Cells ; Scutellaria baicalensis ; chemistry

BACKGROUNDSeveral randomized controlled trials (RCTs) have compared endoscopic and symptomatic relapses in patients with erosive gastroesophageal reflux disease (GERD). We have summarized current evidence for rabeprazole 10 or 20 mg once daily for GERD maintenance treatment over 1 or 5 years.

METHODSMEDLINE, EMBASE, and the Cochrane Central Register of Controlled Trials were searched, through August 2012, for eligible RCTs of adults with erosive GERD. The efficacies of rabeprazole 10 and 20 mg/d were compared.

RESULTSThe search identified 288 citations, and five RCTs containing 1480 patients were considered eligible. Heartburn relapse rates did not differ significantly between patients treated with rabeprazole 10 and 20 mg/d for 1 year (relative risk (RR) = 1.29; 95% confidence interval (CI): 0.97-1.72), but differed in patients treated for 5 years (RR = 1.274; 95% CI: 1.005-1.615). Endoscopic relapse rates differed significantly between rabeprazole 10 and 20 mg/d for 1 year (RR = 1.92; 95% CI: 1.21-3.06), for 5 years (RR = 1.667; 95% CI: 1.073-2.589), and in combined 1- and 5-year maintenance trials (RR = 1.785; 95% CI: 1.298-2.456).

CONCLUSIONRabeprazole 20 mg/d was superior to rabeprazole 10 mg/d in preventing endoscopic relapse of erosive GERD, but that the two dosages were equivalent in symptomatic relief over 1 year.

Dose-Response Relationship, Drug ; Gastroesophageal Reflux ; prevention & control ; Humans ; Proton Pump Inhibitors ; therapeutic use ; Rabeprazole ; therapeutic use ; Randomized Controlled Trials as Topic ; Recurrence

Abstract: This study is to improve the affinity of scFv-AK404R against VEGFR2. The secondary mutational library was constructed by hydrophilic shuffling in CDR3 region of the heavy chain. VEGFR2-specific screening was performed by phage display technology and the protein of mutants was expressed in periplasm of E.coli HB2151 and purified by affinity chromatography. The affinity constant of scFvs was measured by competitive ELISA, and the structure of scFvs was analyzed by bioinformatics. The result showed that a library with 6.4x10(5) scFv members was established by electro-transformation. Two mutated clones with high absorbance value were isolated after screening. After purification by affinity chromatography, electrophoretically pure scFv proteins were obtained. The competitive ELISA showed that the affinities of WZ01 and WZ02 were three times higher than that of the parental AK404R, and bioinformatics analysis showed that the enlarged contact surface and fitted closely with KDR3 surface may be the reasons for improved affinity. These results suggest that introducing hydrophilic amino acids to the heavy chain CDR3 region is an effective approach to improve the affinity of scFv.
Amino Acid Sequence ; Antibody Affinity ; Chromatography, Affinity ; Computational Biology ; Enzyme-Linked Immunosorbent Assay ; Escherichia coli ; metabolism ; Hydrophobic and Hydrophilic Interactions ; Peptide Library ; Single-Chain Antibodies ; genetics ; immunology ; isolation & purification ; Vascular Endothelial Growth Factor Receptor-2 ; genetics ; immunology ; metabolism