Objective:To investigate the expression of dental matrix protein 1(DMP1)in carious human permanent teeth and its possible role during the reparative process after pulp injury.Methods:10 of noncarious third molars (NC),10 of shallow carious (SC),10 of intermediate carious (IC) and 10 of deep carious (DC) were prepared for the detection of DMP1 in odontoblasts by immunohistochemical staining. DMP1 expression in odontoblasts was analyzed by image analysis system and expressed as integral optical density (IOD).Results:DMP1 was majorly detected in cytoplasms and processes of odontoblasts and odontoblast-like cells.The IOD values in the groups of NC,SC,IC and DC were 0.265?0.018,0.309?0.021,0.678?0.031 * and 0.691? 0.033 * respectively;that in the reparative dentin in DC group was 0.856?0.045 ** ( *vs NC P

Objective To explore the clinical curative effect of irinotecan HCL trihydrate combination with cisplatin in treatment of non.small-cell carcinoma(NSCC)by observing the clinical curative effect,adverse reactions and the improvement of the quality of life post therapy.Methods 120 patients with NSCC were divided into two groups.60 cases in control group were treated with cisplatin and topotecan while ifinotecan HCL tfihydrate combination with cisplatin chemotherapy for 60 case of patients in observation group.The curative effect and Kamtfsky point were observed.Results The effective rate of observation group was 56.7%,which was significantly higher than that of the control group(41.7%),and differences between the two groupswas statistically significant(P＜0.05).Average survival time for treatment group was(9.3±4.2)months that was longer than that of the control group[(7.2±3.2)months](P＜0.05).The result of Kamofsky classification standard after chemotherapy also indicated the same situation(P＜0.05).Conclusion Irinotecan HCL trihydrate combining with cisplatin in treatment of non-small cell lung cancer had a effective therapy result and could reduce the toxicity.as well as improving the quality of life of the patients.

Objective To observe the clinical effect of gemcitabine combined with nedaplatin concurrent chemotherapy and radiotherapy in treatment of advanced nasopharyngeal carcinoma.Methods Seventy-six advanced nasopharyngeal carcinoma patients were divided into observation group(38 cases)and control group(38 cases)by radom digits table.The patients in observation group were treated with gemcitabine combined with nedaplatin concurrent chemotherapy and radiotherapy.The patients in control group were treated with fluorouracil combined with cisplatin concurrent chemotherapy and radiotherapy.The clinical effect and adverse reaction were compared between two groups.Results The total effective rate in observation group was 84.2％(32/38),which significantly higher than that in control group[60.5％(23/38)](P＜0.05).There was no significant difference in 1 year overall survival rate between two groups[89.5％ (34/38)vs.76.3％(29/38)](P ＞ 0.05).The rate of gastrointestinal reactions and oral ulcers in observation group were 42.1％(16/38)and 7.9％(3/38),which significantly lower than those in control group[73.7％ (28/38),31.6％(12/38)](P ＜ 0.05).The rate of bone marrow suppression between two groups had no significant difference[31.6％(12/38)vs.23.7％(9/38)](P ＞ 0.05).Conclusion Gemcitabine combined with nedaplatin concurrent chemotherapy and radiotherapy in treatment of advanced nasopharyngeal carcinoma can enhance the clinical effect,and decrease the adverse reaction,which can be applied in clinic.

Objective To explore the principle and methods of normative minimally invasive surgery treatment on hypertensive intracerebral hemorrhage. Methods 49 cases of hypertensive intracerebral hemorrhage were treated by microsurgery with small incision. Results 46 cases survived and 3 cases died after surgery. 42 cases were followed up. Adopting GOS, 19 cases were normal, 12 cases were disable and could care for self, 5 cases were severely disable, sober and could not care for self, 3 cases were vegetable survival, and 3 cases were dead. Conclusion Application of minimally invasive surgery idea and normative treatment according to the patients' condition can obviously improve the efficacy of patients with hypertensive intracerebral hemorrhage.

Aim To evaluate the effects of ferulic acid ( FA ) on lipopolysaccharide ( LPS )-induced neuroin-flammation in microglia cells and its potential mecha-nisms. Methods Microglial activation was induced by stimulation with LPS, and the effects of FA pretreat-ment on microglial activation and production of proin-flammatory mediators, nitric oxide/iNOS were investi-gated. The role of the mitogen-activated protein kinases in the antiinflammatory actions of FA in LPS-stimulated microglia was further elucidated. Results Cell viabil-ity experiments revealed that FA did not produce cyto-toxicity in microglia. FA significantly inhibited LPS-in-duced production of tumour necrosis factor-alpha ( TNF-α) , interleukin-6 ( IL-6 ) , interleukin-1 beta ( IL-1β) , and nitric oxide ( NO ) . Protein and mRNA levels of COX-2 and inducible nitric oxide synthase ( iNOS) were also attenuated by FA. Further experi-ments on intracellular signalling mechanisms showed that inhibition of extracellular regulated kinase ( ERK) contributed to the anti-neuroinflammatory actions of FA. Conclusion The results suggest that FA inhibits LPS-induced microglial inflammation by partial targe-ting of ERK signalling and attenuation of ERK.

In order to estimate the relationship between iron and the Alzheimer's disease, the behavioral and pathological changes were observed by Morris water maze and immunohistochemical staining respectively after injecting FeC13 into brain ventricle of rats. The apoptosis was tested by flow cytometry and the electron microscopy was used to observe ultrastructural changes. There were significant differences in escape latency of time and distance between normal animals and iron treated rats. Percentage and fluorescence intension (FI) of AnnexinV FITC loaded cells undergoing apoptosis were higher in iron treated rats compared with normal animals. Fawn-coloured products of β amyloid protein were interspersedly distributed in extensive areas of cerebral cortex and hippocampus. Under electron microscope, vacuolate degeneration of neuronal processes with mitochondria degeneration and accumulation of microtubule near vacuolar nucleus were observed in iron treated rats. These results suggest that a local higher concentration of iron in brain may induce Alzheimer-like impairment of intelligence and pathological changes.

OBJECTIVE: To learn the clinical features of patients infected with Klebsiella pneumoniae in our hospital.METHODS: From 2006 and 2007,a total of 96 inpatients in our hospital that were confirmed to be infected with Klebsiella pneumoniae by sputum culture were collected for a study of their clinical features and drug susceptibility test results.RESULTS: Patients with Klebsiella pneumoniae infection represented 12.7% of the total concurrent pulmonary infection cases,of which,57 Klebsiella pneumoniae infection cases had concurrent pulmonary tuberculosis(TB),and 39 Klebsiella pneumoniae infection cases had no concurrent TB.Drug susceptibility tests showed that the resistance rates of Klebsiella pneumoniae to third generation cephalosporins and quinolones were higher than those reported in the literature,and the resistant rate of Klebsiella pneumoniae to quinolones in Klebsiella pneumoniae infection patients complicated with TB was higher than those without TB.CONCLUSION: Klebsiella pneumoniae infection was more common in patients with low body resistance,which has typical clinical manifestations.Recently,the resistance of Klebsiella pneumoniae to the third generation cephalosporin has been increasing,and its resistance to quinolones in patients with pneumonia Klebsiella infection complicated with TB was significantly higher than in those without TB.

Objective To explore the value of helical computed tomography (CT) in differential diagnosis of xanthogranulomatous cholecystitis (XGC) and wall-thicked gallbladder cancer (GBC).Methods The CT signs of 18 XGCs and 20 wall-thicked GBCs were retrospectively analyzed.The maximum thickness of gallbladder wall, intramural hypoattenuated nodules, mucosal line of gallbladder inner wall,patterns of enhancement of thickened wall,whether combined with stones,the pericholecystic adjacent liver tissue involvement and biliary tract obstruction were observed.Measurement data were analyzed by independent sample t test and count date were analyzed by Fisher precisely the probability method.Results The mean maximum thickness of the gallbladder wall of XGC and wall-thicked GBC was (22.11±10.19) mm and (20.55±7.94) mm respectively,and there was no statistical significance (t=0.530,P=0.600).Eighteen cases of XGC and five cases of wall- thicked GBC patients were with intramural hypoattenuated nodules (Fisher precisely the probability method,P＜0.01 ),14 cases of XGC and six cases of GBC were with integrated mucosal line (Fisher precisely the probability method,P =0.004 ),three cases of XGC and 12 cases of GBC were with biliary tract obstruction (Fisher precisely the probability method,P=0.009).There was no statistical significance in the CT signs of the range of wall thickness,patterns of enhancement and enhanced degree of thickened wall,adjacent liver tissue involvement, lymphadenopathy, combined with gallbladder or bile duct stone between XGC and wall-thicked GBC patients (Fisher precisely the probability method,all P ＞ 0.05).Conclusions The thickened gallbladder wall with intramural hypoattenuated nodules and integrated gallbladder inner wall mucosal line were characteristic signs for diagnosing XGC.Helical CT scanning can provide evidence for differential diagnosis in XGC and wall- thicked GBC.

Radiological evaluation is a key step for donor's preoperative evaluation in living donor liver transplantation(LDLT).There are many powerful functions in multi-slice computed tomography (MSCT)which can suit all-in-one radiological evaluation before donor's operation.By referring to the articles from home and abroad in recent years,from viewpoint of surgeon,this artical reviews the application status of multi-slice CT for preoperative assessment in LDLT,which can help to provide theory support for choice of radiological examination in LDLT donor.

Objective To investigate the incidence of occult pancreatobiliary reflux and to evaluate its relation to gallbladder epithelial dysplasia and cancer. Methods From July 2006 to Feb 2008,956 cases underwent selective biliary procedure or preoperative endoscopic retrograde cholangiopanereatography (ERCP), bile was collected and amylase was measured. All removed gallbladders were pathologically examined for dysplasia and cancer. Results Occult pancreatobihary reflux was found in 75 of 754 patients in this study, with an incidence of 9. 9%. The biliary amylase values in the patients with occult pancreatobiliary reflux and in controls were 7701±20 378 IU/L and 16±51 IU/L, respectively ( P <0. 01 ).Gallbladder dysplasia and cancer were found in 31.0% and 3.4% of the patients with occult pancreatobiliaryreflux, respectively, and both were higher than those in the patients without pancreatobiliary reflux ( P <0. 05). In the patients with occult pancreatobiliary reflux, the biliary amylase level with gallbladder dysplasia or cancer was 2388 ± 2745 IU/L and was higher than those without gallbladder dysplasia or cancer (P < 0. 01 ). Conclusions With an incidence of 9.9% in patients of normal pancreatobiliary junction,the occult pancreatobihary reflux may contribute to the pathogenesis of gallbladder epithelial dysplasia and cancer.