To study time and dose related changes after gamma knife radiosurgery (GKR) in rat brain, right caudate nucleuses of rats were irradiated by OUR XGD gamma units. The maximum dosages of 20,50,75 and 160Gy were given using a 4 mm collimator. HE, Nissl, Luxol fast blue staining and immunohistochemistry were utilized to observe histological changes.Histological changes in the right caudate nucleuses such as microvessel injury, which appeared as telangiectasia, vasodilatation, vessel wall thickening and edema, and astrocyte changes, which appeared as hypertrophy and proliferation, were observed at various time points after GKR. These findings demonstrate time dependent and dosage dependent changes are found in normal cerebral tissue after GKR. These results provide an explanation of the process taking place during the latent period before delayed radiation necrosis develops.

Objective To explore the immuniated function of infants with bronchiolitis. Methods In vitro production of IL-18,12, 10, 4, IFN-? by peripheral blood mononuclear cells (PBMC) and plasma IgE of bronchiolitis infants measured by enzyme-linked im-munosorbent assay, expression of lymphocyte activation gene - 3 (LAG - 3) mRNA from PBMC measured by semi - quantitative RT- PCR.Forteen healthy children were as normal control. Results Compared with normal control, IL - 12 (390. 94 ? 95. 88 vs 452.44?195.07) ng/L and IL-18(146.23? 55. 81 vs 246.69?121.29) ng/L activity were significantly decreased (P0.05) ;The levels of IL-4(30. 52 ? 17. 65 vs 16.20? 8.94) ng/L and IL-10 (302. 40 ? 100.04 vs 195.30? 84.01) ng/L were elevated significantly(P

Adolescent ; Cough ; complications ; Fatal Outcome ; Female ; Fever ; complications ; Humans ; Pulmonary Fibrosis ; complications ; diagnosis

Objective To discuss the clinical value of Protein induced by Vitamin K Antagonist-Ⅱ (PIVKA-Ⅱ) and alpha-Fetoproteins (AFP) in diagnosing hepatocellular carcinoma (HCC) and monitoring the treatment effects.Methods Patients were recruited by the Affiliated Hospital of Qingdao University,from August 2013 to March 2014.Serum levels of PIVKA-Ⅱ and AFP were measured by both chemiluminescence assay (CLIA) and electrochemiluminescence assay (ECLA) in patients with HCC (n =148),intrahepatic cholangiocellular carcinoma (n =37),gastric cancer and colorectal cancer (n =44),cirrhosis (n =63),chronic hepatitis B (n =38) and healthy subjects (n =57).To analyze the areas under the receiver operating characteristic curves (ROC-AUC) and to compare the sensitivity and specificity of single PIVKA-Ⅱ or AFP assay,and the combined detection.To analyze the correlation of PIVKA-Ⅱ and both tumor size and TNM staging,so do AFP,respectively.To compare the serum level changes of the two indicators in HCC patients before and after treatment.Results The serum levels of both PIVKA-Ⅱ and AFP in HCC group were higher than that in intrahepatic cholangiocellular carcinoma,gastric cancer and colorectal cancer,cirrhosis,chronic hepatitis B and healthy subjects groups (PIVKA-Ⅱ:U =866.50,424.00,958.00,292.00 and 448.00 ; AFP:U=713.00,440.50,1 182.00,614.00 and 399.00,P ＜0.001).The ROC-AUCs of the single PIVKA-Ⅱ or AFP assay and the combined detection in HCC group were not statistically different (P ＞ 0.05).The sensitivity of PIVKA-Ⅱ (87.16％) was higher than that of AFP (68.92％,x2 =4.73,P ＜ 0.05) in diagnosing HCC ; the sensitivity of the combined detection of PIVKA-Ⅱ and AFP(93.24％) was higher than that of PIVKA-Ⅱ itself (87.16％,adjusted x2 =64.70,P ＜ 0.01) ;while the specificities among them did not show statistical significance (P ＞ 0.05).Tested by Spearman rank correlation,the serum levels of PIVKA-Ⅱ and AFP were both positively related to tumor size (r =0.716,0.475 respectively,P ＜ 0.001).The serum levels of PIVKA-Ⅱ and AFP in HCC patients increased gradually correlated with tumor size (H =72.70,37.02 respectively,P ＜ 0.001) and the positive rates of PIVKA-Ⅱ and AFP were gradually improved (x2 =26.74,21.62 respectively,P ＜ 0.01),too.Based on the International TNM Staging System,the serum levels of PIVKA-Ⅱ and AFP (H =46.63,21.38 respectively,P ＜0.001) and the positive rates of PIVKA-Ⅱ and AFP (PIVKA-Ⅱ:x2 =20.40,P ＜0.01 ;AFP:x2 =8.33,P ＜0.05) in HCC patients from Ⅰ-Ⅳ stages were increased as TNM stages elevated.The serum levels of PIVKA-Ⅱ and AFP in HCC patients were both dropped sharply compared with preoperative levels (Z =-4.59,-4.22 respectively,P ＜ 0.001) and also both dropped in each of the Ⅰ-Ⅳ TNM stages (PIVKA-Ⅱ:Z =-2.85、-2.98、-2.70 respectively,P ＜ 0.05 ; AFP:Z =-2.48、-3.82、-2.50 respectively,P ＜ 0.05) compared with serum levels before treatment.Conclusion PIVKA-Ⅱ and AFP both have high clinical application values in diagnosing HCC and monitoring treatment effects.The sensitivity of PIVKA-Ⅱ in diagnosing HCC is significantly higher than AFP,and the sensitivity can be elevated by the combined detection in diagnosing HCC without reducing the specificity.

Objective To explore the clinical application of microsurgical techniques to therapy the femoral neck fracture in younger patients and prevent the necrosis of femoral head.Methods Seventy-four younger adults,age from 23 to 50,with femoral neck fractures were treated by open veducition,internal fixa- tion and pedicled bone transplantation from Jan.1995 to Dec.2004.All of the 74 patients were reviewed clin- ically and radiologically after an average of 3.2 years.Results In this group,19/74 cases(25.68%)had avaseular necrosis of the femoral head,which were diagnosised after an average of 28.5 months following inju- ry.Despite these results,these patients assessment with Harris system had been very good or good in 55/74 patients(74.32%).Conclusion It's an effective method to decrease the incidence of necrosis of femoral head after management the femoral neck fracture in younger patients by microsurgical techniques.

AIMTo investigate the influence of CCE3 on bone mineral element metabolism and relative hormone in ovariectomized rats.

METHODS24 female SD rats were divided randomly into 4 groups (n = 6): (1) Normal control; (2) sham ovariectomy; (3) ovariectomy(OVX); (4) OVX + CCE3.

RESULTS(1) Ca, Mg, S, Co, Mn, Zn reduced obviously and P increased in the bone of the OVX rats. (2) E2, P, TSH, T4, CT, cortisol, GH reduced obviously and IL-6, FSH, LH increased obviously in serum of the OVX rats. (3) CCE3 corrected the changes of Ca, Mg, S, Co, Mn, Zn and P in bone as well as the changes of E2, P, TSH, T4, CT, cortisol, GH and IL-6, FSH, LH in serum of the OVX rats.

CONCLUSIONChanges of relative hormone and IL-6 induced by CCE3 are the important mechanism of the influence of CCE3 on bone mineral element metabolism in ovariectomized rats.

Animals ; Bone Density ; drug effects ; Estriol ; analogs & derivatives ; therapeutic use ; Female ; Follicle Stimulating Hormone ; blood ; Interleukin-6 ; blood ; Luteinizing Hormone ; blood ; Osteoporosis ; drug therapy ; physiopathology ; prevention & control ; Ovariectomy ; Quinestrol ; analogs & derivatives ; Rats ; Rats, Sprague-Dawley

ObjectiveTo investigate the hepatitis B virus (HBV) infection rate among pregnant women in Shaanxi Province, China and the high-risk population of mother-to-infant transmission (MTIT). MethodsA survey was performed for 13 451 pregnant women in 18 hospitals in Shaanxi Province to investigate the status of HBV infection, and combined immunization was performed for the infants born to HBsAg-positive women. Univariate and multivariate logistic regression analyses were used to investigate the risk factors for MTIT. The t-test or the Mann-Whitney U test was used for comparison of continuous data between groups, and the chi-square test was used for comparison of categorical data between groups. ResultsThe prevalence rate of HBsAg was 7.07% among the pregnant women in Shaanxi Province, and the rate reached as high as 9.40% in southern Shaanxi. The MTIT rate of HBV was 5.21%. The univariate analysis showed that HBsAg titer, HBeAg titer, positive HBeAg, and HBV DNA load in mothers were associated with HBV infection in infants, and the multivariate analysis showed that HBV DNA load in mothers is an independent risk factor for MTIT (relative risk=1.586, 95% confidence interval: 1.020-2.465, P=0.041). Among the pregnant women with HBV infection and MTIT, 84.62% had positive HBeAg and an HBV DNA load of ＞106 IU/ml; among the infants with MTIT, 15.38% were the infants born to the HBeAg-negative pregnant women. For the pregnant women with positive HBeAg and HBV DNA＞106 IU/ml, the relative risk of MTIT in infants was 1.210 (1.129-1.297); for the pregnant women with negative HBeAg, HBV DNA＞2×103 IU/ml, and HBsAg ＞104 IU/ml, the relative risk of MTIT in infants was 26.062 (2.633-258024). ConclusionThere is a high HBV infection rate among pregnant women in Shaanxi Province. Pregnant women with positive HBeAg and a high HBV DNA load have a high risk of MTIT. Although the infants born to HBeAg-negative mothers have a low HBV infection rate, there is still a high risk of MTIT when the mother has an HBV DNA load of ＞2×103 IU/ml and an HBsAg level of ＞104 IU/ml.

To compared the clinical characteristics and surgical outcomes of temporal lobe epilepsy （TLE） patients with different auras，so as to provide more theoretical reference for the clinical diagnosis and treatment of TLE. Methods We retrospectively analyzed the clinical data of 408 TLE patients who underwent surgical treatment. The auras were divided into mesial temporal auras，lateral temporal auras，extratemporal auras and unspecific auras，and the age at seizure onset，gender，febrile seizures （FS），MRI，distribution of interictal epileptiform discharges （IEDs），secondary general tonicclonic seizures （SGTCS），operation side and surgical outcomes were compared in patients with different auras. Results 60.8% （248/408） of the TLE patients had auras，of which 37.7% were medial temporal auras，7.6% were lateral temporal auras，4.7% were extratemporal auras and 10.8% were unspecific auras. There was no significant difference in age at onset，gender，febrile seizures，MRI，distribution of IEDs，SGTCS and operation side in patients with or without auras（all P>0.05）. However，among patients with auras，those with mesial temporal auras had higher odds of focal IEDs （57.1% vs. 43.6%，P=0.039），and those with extratemporal auras had higher odds of FS and left side surgery （52.1% vs. 21.8%，P=0.006 and 73.7% vs. 49.3%，P=0.041，respectively）. The mean postoperative follow-up was 41.5±22.9 months and 75.4% （254/337） of patients were seizure free. There was no statistical difference in surgical outcomes among patients with different type of auras or no auras（P=0.483）.Conclusion The clinical characteristics including FS，lateralization of epileptogenic focus and distribution of IEDs in TLE patients with different type of auras had certain differences.However，there was no difference in surgical outcomes among TLE patients with no aura or different type of auras.

Objective To clarify the role of the virtual reality (VR)in the training of trans-femoral cerebral angiography for novices without any experience of intravascular manipulation. Methods Twenty-four novices without experiences of intravascular manipulation were divided into 2 groups (VR group or control group)with random pair method concerning the age,gender and subjects. The par-ticipants in control group were trained in routine manners while those in VR group practiced on a simulator and subsequently participated in real angiography once as assistants. Real angiography tests were performed for all participants after the training session and additional angiography tests were per-formed for VR group just after the stimulation session on the simulator. Real angiography tests were supervised and scored according to a modified rating scale by neuroradiological experts who were blinded to the novices' training procedures. Difference between the real test performance of the two groups were compared by pared-samples t test,while the correlation between the performance of the real tests and simulator tests of VR group was proved by Pearson correlation analysis. P<0.05 was con-sidered statistically significant. Results The mean scores of VR group were (27.6±3.6)and (26.4± 3.8)in the tests on simulator and real angiography tests respectively,while score of control group was (21.2±3.4)in the real angiography tests. A positive correlation was revealed in VR group between performance on the simulator and that on real patients (r=0.825,P=0.001). Real performance of the VR group was significantly better than that of control group (P=0.010). Conclusions Virtual reality could ensure transfer of acquired endovascular skills from simulators to patients so as to become a valid tool for novices to improve the interventional techniques in tranfemoral cerebral angiography.