Objective:To search for proteins interacting with ARA267-? with the yeast two-hybrid system in order to further investigate the function of ARA267-?. Methods:We screened a pretransformed human brain cDNA library with the pGBKT7-PHD-SET recombinant plasmid as a bait which express four PHD(plant homeodomain) and one SET[Su(var)3-9, Enhancer-of-zeste, Trithorax] conserved domains in ARA267-?.The plasmids in positive yeast clones were selectively identified by restriction analysis and DNA sequencing. The interactions were retested by yeast two-hybrid assay. Results: There were about six hundreds positive yeast clones on SD/-Ade/-His/-Leu/-Trp/2.5 mmol/L 3-AT/ X-?-Gal high-stringency selection plates. The pACT2-cDNA plasmids in sixty-five yeast clones were isolated and thirty-five cDNA inserts were sequenced. Sixteen different genes,including DR6(death receptor-6), PIAS3 (protein inhibitor of activated STAT3)and RanBPM(Ran-binding protein in the microtubule-organizing center), were identified after BLAST in GenBank. The yeast two-hybrid retest showed that all but RanBPM were true interactors of ARA267-?-PHD-SET. Conclusion: The ARA267-?-PHD-SET can interact with several distinct proteins. This suggests that ARA267-? is a protein having multiple functions. RanBPM might be a transcriptional factor.

Objective To explore the clinical outcomes of the percutaneous radiofrequency nucleoplasty in the treatment of cervical disc herniation.Methods 183 patients with cervical disc herniation were treated with percutaneous radiofrequency nucleoplasty.A retrospective analysis of 183 patients was made,and their effects were evaluated using the VAS and the subjective satisfactory degree of the patients.Results All cases were followed up for 3 to 36 months( average 12 months).There were no complications observed such as hemorrhages,infections and nerve root injurys due to the procedure.One week after operation,symptom remission rate was 58.4％ and perfect rate of subjective satisfaction was 95.1％.At final follow up,symptom remission' rate was 66.1％ and perfect rate of subjective satisfaction was 85.8％.Conclusion Percutaneous radiofrequency nucleoplasty was an effective,minimally invasive and safe procedure to treat cervical disc herniation,and the operative treatment had shown better results.

Objective To study the expression of signaling lymphocytic activation molecule (SLAM)CD150 in peripheral blood mononuclear cells(PBMCs)isolated from adult non-responders to recombined yeast gene hepatitis B vaccine.Methods A total of 202 cases were recruited.All these subjects had been immunized with recombined yeast gene hepatitis B vaccine for more than one standard scheme in two years(from Sep 2007 to Dec 2009)and remained negative for hepatitis B markers(HBsAg,anti-HBs,HBeAg,anti-HBe and anti-HBc).After recruitment,all 202 subjects received another standard scheme(0,1 and 6 month)revaccination.The blood samples were collected 7 months later after the first injection of revaccination to detect anti-HBs titer.The PBMCs were isolated from 18 adult non-responders(anti-HBs titer<10 mIU/mL)and 18 adult responders(antiHBs titer≥100 mIU/mL).CD150 expression on cell surface was analyzed by flow cytometry.SAS package was used for t test and spearman rank correlation analysis.Results After rHBsAg stimulation,the percentage of PBMCs expressed CD150 was significantly higher in non-responders (39.20%±10.66%)than responders(23.73%±12.41%)(t=2.1947,P<0.05).The same trend was also observed in rHBsAg stimulated C133+CD4+T cells,but the difference was not statistically significant(49.64%±11.94%vs 37.73%±11.02%)(t=1. 7175,P>0.05).After phytohaemagglutinin (PHA)stimulation,the percentage of CD150-positive PBMCs was also significantly higher in non-responders (39.21%±7.37%)than responders(23.18%±12.68%)(t=2.2835,P<0.05).CD150 expressions in both PBMCs and CD3+CD4+T cells were negatively correlated with anti-HBs titer after rHBsAg stimulation (r=-0.726,P<0.05).Conclusion Activation of CD150 may contribute to the non-response to hepatitis B vaccine.

Objective To measure middle cerebral artery (MCA) hemodynamic parameters of chronic cerebral ischemia in middle aged and elderly people with phase contrast magnetic resonance imaging (PCMRI),and to explore cerebral blood flow dynamic pattern in different degrees of chronic cerebral ischemia patients.Methods Middle aged and elderly people underwent conventional MRI scan,and were divided into 12 cases of the normal group,16 cases of mild cerebral ischemia group and 13 cases of obvious cerebral ischemia group.All groups underwent bilateral MCA PCMRI.Bilateral MCA hemodynamic parameters and phase-velocity curve in a heartbeat cycle were obtained by QFLOW analysis software on the workstation for post-processing.Bilateral MCA vascular area,peak velocity (PV),mean velocity (MV) and mean flow (MF) were recorded.The differences of bilateral MCA hemodynamic parameters among the three groups were compared by SPSS17.0 software.Results Bilateral MCA vascular area,MV,MF and right MCA PV among three groups were statistically significant by one-Way ANOVA (P＜0.05).Compared with normal group,systolic peak of bilateral MCA phase-velocity curve was low,dull,widen,and the connection between the diastolic peak and systolic peak became flattened in chronic cerebral ischemia patients.Conclusion PCMRI can reflect the differences of the cerebral blood flow dynamic change pattern between different degrees of chronic cerebral ischemia.