Objective To explore the protective effect of Ligustrazine on pulmonary fibrosis caused by hyperoxia in neonatal rats.Met-hods Eighty Sprague-Dawley(SD)clean neonatal rats,which were less than 12 hours old,were enrolled in this study.The neonatal rats were randomly divided into 4 groups:air-exposed control group(group A);air-exposed plus Ligustrazine-treated group(group B);hype-roxia-exposed control group(group C);hyperoxia-exposed plus Ligustrazine-treated group(group D).The neonatal rats of group B and group D were intraperitoneally injected with Ligustrazine[30 mg/(kg?d)] in solution of normal saline(NS),group A and group C were intraperitoneally given the same dose of NS.On 14th day,10 rats of each group were randomly chosen and then killed,the pulmonary pathological changes were observed by HE staining under light microscope.The area percentages of collagen fibers were measured by Masson staining and imaging analysis.The degree of pulmonary fibrosis was evaluated by the area percentages of collagen fibers and hydroxyproline content.The results were analyzed by SPSS 13.0 software.Results On the 14th day of the exposure,the histopathologic examination demonstrated broadened lung interstitium and reduced alveolar quantity and lung fibrosis were developed in group C;Ligustrazine treatment obviously alle-viated the changes of lung histomorphology.The newborn rats in group C had lower body weight compared that of with group A,B(Pa0.05).Conclusion Early use of Ligustrazine can decrease the severity of the pulmonary fibrosis of neonatal rats exposed to hyperoxia.

Objective To explore intervention effect of retinoic acid(RA) on hyperoxic lung fibrosis in neonatal rat,and to observe the role of transforming growth factor-?1(TGF-?1)and ?-smooth muscle actin(?-SMA)in hyperoxic lung fibrosis.Methods The SD neonatal rats were randomly divided into 4 groups:air-exposed control group(group Ⅰ),air-exposed and RA-treated group(group Ⅱ),hyperoxia-exposed control group(group Ⅲ),hyperoxia-exposed and RA-treated group(group Ⅳ).The rats of group Ⅲ,Ⅳ were kept in chambers containing 850 mL/L oxygen,the other 2 groups were exposed to air.The rats of group Ⅱ,Ⅳ were intraperitoneally injected with RA [500 ?g/(kg?d)],group Ⅰ,Ⅲ were intraperitoneally given the same dose of oleum lini.At the end of exposure,the lung histophatholoical changes and radical alveolar counts(RAC) were observed by HE staining under light microscope,the degree of pulmonary fibrosis was evaluated by Masson trichrome method and fibrosis score.The protein expression of TGF-?1 and ?-SMA were determined by immunostaining.Results At 14 d of exposure,group Ⅲ resulted in a significant increase in fibrosis score and expressions of TGF-?1 and ?-SMA compared with group Ⅰ,Ⅱ and Ⅳ(Pa0.05).Conclusion TGF-?1 and ?-SMA may have important role in hyperoxic induced lung fiborsis injury,the earlier period intervention of RA can reduce lung fibrosis regeneration and exceptional alveolus development.

Objective:To comprehend morphology changes of temporomandibular joint in adults with mandible deviation,and the correlation in these changes.Methods:The mesofault radiographs of temporomandibular joint were taken in 21 adult patients with mandible deviation.The data described morphology of temporomandibular joint were analysed.Results:In adult patients with mandible deviation,the condyle process of opposite side was anterior and inferior when compared with deflected side.The height of condyle process,the upper height of condyle process,the gradient of prosobevel of condyle process and the gradient of back bevel of glenoid fossa were augmented when compared to deflected side.The gradient of prosobevel of condyle process showed positive correlation to the prosoblank of joint and the deep of glenoid fossa,and the height of condyle process showed positive correlation to the upper height of condyle process in both sides.The gradient of back bevel of condyle process showed positive correlation to the gradient of back bevel of glenoid fossa in deflected side.The gradient of back bevel of condyle process showed negative correlation to the supper blank of joint and the height of articular tubercle in opposite side.Conclusion:There are some differences in morphology of both temporomandibular joint in adults with mandible deviation,and there is some correlation between these changes.

Annual salary system reform at public hospitals in Sanming was cited as an example,to touch upon the five components of equity in such a reform,namely external equity,internal equity,individual equity,procedural equity and interactive equality.The significance,roadblocks and essential conditions were then analyzed,to come up with such recommendations as development of a mechanism for remuneration survey and dynamic adjustment,and a system for better posts grading and evaluation,as well as better performance appraisal tools,and a competent performance appraisal system.

Objective To evaluate the effect of fast track surgery nursing on percutaneous lumbar diskectomy. Methods A total of 126 patients were randomly divided into the control group and the experimental group,the control group received traditional nursing plan, the experimental group was given fast track surgery nursing plan. The nursing effect was observed. Results Postoperative anal exhaust time, feeding time, walking time, length of hospital stay ofthe experimental group were (1.61±0.71) days, (2.01±0.71) days, (4.70±2.12) days, (12.72±2.07) days, whichwere significantly shorter than those of the control group, which were (3.37±0.93) days, (2.27±0.63) days, (8.40±3.21) days, (15.81±2.14) days, the difference between two groups were statistically significant (t=4.012-6.068, P<0.05). The incidence of complications was 11.1%(7/63) in the experimental group, which was lowercompared with the control group, 23.8% (15/63), the difference between two groups was statistically significant(χ2=6.639, P < 0.05). Curative effect of the experimental group was 90.4% (57/63), which was significantly higher than that of the control group, 85.7% (54/63), the difference between two groups was not statistically significant (χ2=1.460,P>0.05). The Rdand Morris Questionnaire score of the experimental group was 21.67±3.48, which was higher than that of the control group(14.43 ± 2.01), the difference between two groups was statistically significant(χ2=6.077, P <0.05). Conclusion Fast track surgery nursing can promote the patient's postoperative rehabilitation ,reduce the postoperative complications, shorten the length of hospital stay and improve the quality of life.

Objective To explore the efficacy of coblation nucleoplasty for the treatment of lumber disc herniation.Methods A total of 40 patients with lumber disc herniation were treated with coblation nucleoplasty in our hospital.Discogram was taken before the surgery.The patients with negative results were excluded from this series.Results The operation was completed in all the 40 cases(44 interspinous spaces).They were followed up for 2 to 8 months(mean 5 months).According to the Nakano's criteria,the outcome of the surgery was excellent in 8 and good in 29,accounting for 92%(37/40)of the patients.In the patients with central type lumber disc herniation,8(80%,8/10)had excellent or good outcome;whereas,in those with lateral type herniation,97%(29)of the 30 patients had such results.None of this series had complications.Conclusion Coblation nucleoplasty is a simple,safe,and effective surgery with minimal invasion for lumber disc herniation.

Objective To explore the role of extracellular signal-regulated kinase (ERK)in central nucleus of amygdala (CeA)in the mechanism of fentanyl-induced hyperalgesia (OIH)in rats. Methods Step 1:12 healthy male Sprague-Dawley rats,weighing 60-100 g,were randomly divided into OIH and Control group.The mechanical paw withdrawal threshold (PWT)and the thermal paw withdrawal latency (PWL)were tested at pre-and post-OIH induction.Then the level of p-ERK in the CeA was analyzed by Western blotting.Step 2:After successful induction of OIH and catheterization in CeA,another 30 SD male rats were randomly divided into 5 groups (n = 6 each):Group OIH;Group OIH+U0124;Group OIH+U0126(0.1 5 nmol);Group OIH+U0126(0.45 nmol)and Group OIH+U0126 (1.5 nmol),then 0.3 μl of DMSO,U0124 (1.5 nmol),U0126 (0.1 5 nmol,0.45 nmol,1.5 nmol)was given through the catheter separately.PWT and PWL were tested before cathe-terization,at pre-OIH induction,post-OIH induction and 0.5 h after CeA drug administration.After the last test of pain threshold,the rats were sacrificed and CeA tissues were sampled for analyzing the expression of p-ERK by western blot.Results In step 1 compared with control group,PWT and PWL of OIH group were sharply decreased post-OIH induction (P <0.05),concomitant increase of the expression of p-ERK in CeA in OIH group was also observed.In step 2,both PWT and PWL were sharply decreased post-OIH induction (P <0.05).Intra-CeA U0126 injection,but not U0124, reversed both behavioral hyperalgesia and molecular activation of ERK in CeA in a dose-dependent manner (P <0.05).Conclusion ERK plays a pivotal role in the maintenance of fentanyl-induced hy-peralgesia.Targeting inhibition of ERK activation in CeA can alleviate fentanyl-induced hyperalgesia.

OBJECTIVEThis study aims to observe and compare the influences of the casting alloy post and cores on magnetic resonance imaging (MRI).

METHODSSix casting alloy post and sores were fabricated for the experimental groups, and zirconia post and core served as the control. The seven types of post and cores were of the same size and shape. Each post and core was orally fastened to a volunteer and then imaged with sequences of T1-weighted spin echo imaging (SE-T1WI), T2-weighted turbo spin-echo imaging (TSE-T2WI), and diffusion weighted imaging (DWI).

RESULTSCobalt chromium alloy post and core generated severe artifacts, whereas gold palladium alloy post and core generated no obvious artifacts, and no difference was observed between the zirconia and the gold palladium alloy post and cores (P > 0.05). The pure titanium alloy post and core produced mild artifacts. The post and cores of the titanium, nickel-cadmium, and gold platinum alloys generated moderate artifacts with no significant differences (P > 0.05).

CONCLUSIONDifferent metal post and cores have different influences on MRI. With the exception of that generated by cobalt chromium alloy, the artifact generated by the single-alloy post and core does not influence the image of the normal head and neck.

Objective To investigate the expression and prognostic significance of P-JAK2, P-STAT3 and mutant p53 in cervical lesions. Methods A total of 153 cervical biopsies of patients from Gynecology Department, The Second Hospital of Tianjin Medical University were recruited during December 2013 to June 2015. Fifty-seven cases of squamous carcinoma of cervix (SCC), 36 cases of low grade intraepithelial neoplasia (LSIL), 30 patients with high grade intraepithelial neoplasia (HSIL) and 30 cases of normal cervix (NC) were included in the study. Gene chip method was used to detect high-risk hu-man papillpmavirus(HR-HPV)infection. Hematoxylin-eosin staining was used to make pathological diagnosis. Immunohis-tochemical assay was used for the detection of P-JAK2, P-STAT3 and mutant type p53 protein expression in cervical le-sions. Results (1) HR-HPV infection rate and P-JAK2 expression were significantly higher in SCC group than those of HSIL group, LSIL group and NC group (P<0.05). (2) The expression of P-STAT3 and mutant type p53 were significantly higher in SCC group than those of LSIL group and NC group (P<0.05). However, there was no significant difference between SCC group and HSIL group. (3) The positive expressions of P-JAK2 and P-STAT3 showed significant differences in different FIGO stages, histopathological grade, lymph node metastasis and HR-HPV infection in SCC group, respectively ( P<0.05). There were significant differences in the positive expression of mutant type p53 between different FIGO stages and HR-HPV infection (P<0.05). (4) There was positive correlation between P-JAK2, P-STAT3, positive expression of mutant type p53 and HR-HPV infection in SCC tissues (P<0.05). There was a positive correlation between P-STAT3, p53 expression and HR-HPV infection (P<0.05). There was a positive correlation between mutant p53 expression and HR-HPV infection (P<0.05). Conclusion P-JAK2, P-STAT3 and mutant p53 protein expression rates are high in SCC group than those of NC and SIL groups, which may be associated with HR-HPV infection, cervical cancer occurrence and progression.

Objective To investigate the impact of ultrapure dialysate on long-term survival rate and complication in maintenance hemodialysis patients.Methods Seventy maintenance hemodialysis patients were selected,and they were divided into ultrapure dialysate group (36 cases) and control group (34 cases) by random digits table method.The 1-,3-,5-year mortality,death causes and the incidences of cardiovascular complication,infection,cerebrovascular accident were recorded.Results The 3-and 5-year mortality in ultrapure dialysate group were significantly lower than those in control group:30.6％ (11/36) vs.41.2％ (14/34) and 41.7％ (15/36) vs.82.4％ (28/34),and there were statistical differences (P ＜ 0.05).The mortality of infection in ultrapure dialysate group was significantly lower than that in control group:1/15 vs.21.4％ (6/28),and there was statistical difference (P ＜ 0.05).The incidences of cardiovascular complication,cerebrovascular accident,infection in ultrapure dialysate group were significantly lower than those in control group:47.2％ (17/36) vs.79.4％ (27/34),27.8％ (10/36) vs.41.2％ (14/34) and 41.7％ (15/36) vs.73.5％ (25/34),and there were statistical differences (P ＜ 0.05).Conclusion Ultrapure dialysate can increase long-term survival rate and decrease incidence of complication in maintenance hemodialysis patients.