Aim To investage the effects of ?、?、?-receptor on hyperlocomotor and analgesia in mice.Methods Locomotor activity experiment and hot-plate pain experiment were measured.Results Oxycodone dose-dependently enhanced locomotor response in mice.Naloxone,a unselective opioid receptor antagonists and naltrindole(?-selective opioid receptor antagonist)could attenuate the increase of locomotor acitivity induced by oxycodone,but naloxonazine,a ?-receptor antagonist had no such effect.?-receptor antagonist nor-Binltorphimine increased hyperlocomotion induced by oxycodone.In antinociceptive experiment,naloxonazine and naltrindole could not attenuate the that of oxycodone,but nor-Binaltorphimine could attenuate the antinociceptive effects of oxycodone.Conclusion Oxycodone-hyperlocomotor is probably mediated by ? opioid receptor,and antinocieptive effects of oxycodone is probably mediated by ? opioid receptor.

Objective To investigate whether expression quantity of HLA-B27 and its subtypes associated with incidence of AS,the gene expression of HLA-B27 and its subtypes were detected in patients with AS.Methods 120 cases patients sus-pected with AS and 50 healthy subjects were enrolled in the study.Main demographic and clinical characteristics of the sub-jects were collected.Meanwhile total RNA was isolated from peripheral blood and real time RT-PCR was used to measure the quantitative expression of HLA-B27 gene.Besides RT-PCR,sequence-based typing (SBT)method was used to confirm the HLA-B27 subtype.All experimental data were analyzed by SPSS17.0 software and P values <0.05 were considered to be significant.Results Firstly,there were 55 subjects were finally diagnosed as AS patients among the 120 patients suspec-ted with AS.There were 53 subjects whose HLA-B27 was positive (96.36%)in 55 patients with AS.It showed that there was a correlation between BASDAI and expression quantity of HLA-B27 gene (r=0.845,P =0.000).Five subtypes were found and which were HLA-B27∶04 subtype (29/53,54.72%),HLA-B27:05 subtype (20/53,37.74%),HLA-B27 ∶02 subtype (2/53,3.77%),HLA-B27∶03 subtype (1/53,1.89%)and HLA-B27∶07 subtype (1/53,1.89%),respectively. Among the 50 healthy subjects,there were only one kind of subtype (2/50,4%),which was HLA-B27∶04.There were no statistical difference in the age (t=0.711,P =0.480),sex (χ2 =0.880,P =0.348),family history (χ2 =0.011,P =0.916) and treatment (χ2 =0.113,P =0.736)between the HLA-B27∶04 and HLA-B27∶05 subtypes.Conclusion HLA-B27∶04 and HLA-B27∶05 were primary subtypes in AS patients which HLA-B27 positive.There was a correlation between gene expression quantity of HLA-B27 and AS disease activity index.

Objective To compare PCR-SBT to IMS-ELISA in the HLA-B27 detection in the ankylosing spondylitis (AS)pa-tients.Methods Simultaneously,PCR-SBT and IMS-ELISA were used to detect the HLA-B27 expression in peripheral blood samples which were suspected patients with AS from 120 cases.Chisquare test of paired design and the area under curve of receiver operating characteristics of SPSS17.0 software were used to evaluate the value of PCR-SBT and IMS-ELISA in HLA-B27 detection of AS patients.Results Among 120 cases of suspected patients with AS,the positive rates of HLA-B27 detected by PCR-SBT and IMS-ELISA were 45.83%(55/120)and 37.50% (45/120),respectively.There was statistical difference between the two methods in the HLA-B27 detection (χ2 =59.455,P =0.000).The sensibility and spe-cificity of PCR-SBT were 96.36% and 96.92%,respectively.While the sensibility and the specificity of IMS-ELISA were 69.09% and 89.23%,respectively.Area under the curve of two methods were 0.966 and 0.792,respectively.Conclusion In comparison with IMS-ELISA,the sensibility and the specificity of PCR-SBT in HLA-B27 detection were higher in AS diag-nosis,that is to say,PCR-SBT is better in HLA-B27 detection and AS diagnosis.

Objective To investigate expressions of phosphorylated c-Jun N-terminal kinase (p-JNK)and P38 mitogen-activated protein kinase(p-P38MAPK)in psoriasis vulgaris lesions. Methods Tissue specimens were obtained from lesions of 30 patients with psoriasis vulgaris and normal skin of 30 healthy human controls. An immunohistochemical study and Western-blot analysis were performed to measure protein expressions of p-JNK and p-P38MAPK in these skin specimens. Results As the immunohistochemical study showed, the expressions of p-JNK and p-P38MAPK(expressed as the average optical density [AOD]value for targeted proteins)were significantly higher in psoriasis vulgaris lesions than in normal skin tissues (p-JNK: 0.663 ± 0.016 vs. 0.333 ± 0.009, t = 44.869, P < 0.001; p-P38MAPK: 0.436 ± 0.011 vs. 0.306 ± 0.010, t = 21.913, P < 0.001). Western-blot analysis also showed increased protein expressions of p-JNK and p-P38MAPK in psoriasis vulgaris lesions compared with normal skin tissues (t = 20.477, 165.084, respectively, both P <0.05). Conclusion The activation of JNK and P38MAPK may be involved in the overproliferation of epidermal cells in psoriasis vulgaris lesions.

Objective To compare the serological non-invasive liver fibrosis tests and pathological examination in the clinical diagnosis of chronic hepatitis B. Methods Selected 97 patients with chronic hepatitis B in our hospital as the research object and tested non-invasive liver fibrosis tests and liver biopsy pathological examination.Compare the test results of two kinds. Results The serum noninvasive hepatic fibrosis index(PⅢP,Ⅳ-C,HA,LN)showed good positive correlation with pathological stage. The correlation coefficient suggested that with the aggravation of hepatic fibrosis,liv-er fibrosis indexes tended to rise gradually,and the indicators differences were statistically significant (P<0.05). Con-clusion Liver biopsy in patients with chronic hepatitis B diagnosis detection is the "gold standard" with greater injury. Serological non-invasive liver fibrosis tests has high diagnostic value,can reduce the number of puncture biopsy.

Objective: To investigate the current status and real performance of the detection of RUNX1-RUNX1T1 fusion transcript levels and WT1 transcript levels in China through interlaboratory comparison. Methods: Peking University People’s Hospital (PKUPH) prepared the samples for comparison. That is, the fresh RUNX1-RUNX1T1 positive (+) bone morrow nucleated cells were serially diluted with RUNX1-RUNX1T1 negative (-) nucleated cells from different patients. Totally 23 sets with 14 different samples per set were prepared. TRIzol reagent was added in each tube and thoroughly mixed with cells for homogenization. Each laboratory simultaneously tested RUNX1-RUNX1T1 and WT1 transcript levels of one set of samples by real-time quantitative PCR method. All transcript levels were reported as the percentage of RUNX1-RUNX1T1 or WT1 transcript copies/ABL copies. Spearman correlation coefficient between the reported transcript levels of each participated laboratory and those of PKUPH was calculated. Results: ①RUNX1-RUNX1T1 comparison: 9 samples were (+) and 5 were (-) , the false negative and positive rates of the 20 participated laboratories were 0 (0/180) and 5% (5/100) , respectively. The reported transcript levels of all 9 positive samples were different among laboratories. The median reported transcript levels of 9 positive samples were from 0.060% to 176.7%, which covered 3.5-log. The ratios of each sample’s highest to the lowest reported transcript levels were from 5.5 to 12.3 (one result which obviously deviated from other laboratories’ results was not included) , 85% (17/20) of the laboratories had correlation coefficient ≥0.98. ②WT1 comparison: The median reported transcript levels of all 14 samples were from 0.17% to 67.6%, which covered 2.6-log. The ratios of each sample’s highest to the lowest reported transcript levels were from 5.3-13.7, 62% (13/21) of the laboratories had correlation coefficient ≥0.98. ③ The relative relationship of the reported RUNX1-RUNX1T1 transcript levels between the participants and PKUPH was not always consistent with that of WT1 transcript levels. Both RUNX1-RUNX1T1 and WT1 transcript levels from 2 and 7 laboratories were individually lower than and higher than those of PKUPH, whereas for the rest 11 laboratories, one transcript level was higher than and the other was lower than that of PKUPH. Conclusion The reported RUNX1-RUNX1T1 and WT1 transcript levels were different among laboratories for the same sample. Most of the participated laboratories reported highly consistent result with that of PKUPH. The relationship between laboratories of the different transcript levels may not be the same.