Actins ; metabolism ; Adult ; Carcinosarcoma ; diagnostic imaging ; metabolism ; pathology ; surgery ; Hepatectomy ; methods ; Humans ; Liver Neoplasms ; diagnostic imaging ; metabolism ; pathology ; surgery ; Male ; Tomography, X-Ray Computed ; Vimentin ; metabolism

Adult ; Cementoma ; pathology ; surgery ; Diagnosis, Differential ; Humans ; Male ; Mandibular Neoplasms ; pathology ; surgery ; Tooth Root ; pathology ; surgery

Castleman Disease ; genetics ; pathology ; surgery ; Diagnosis, Differential ; Female ; Gene Rearrangement, B-Lymphocyte, Heavy Chain ; Humans ; Hyperplasia ; Lung ; pathology ; surgery ; Lung Diseases ; genetics ; pathology ; surgery ; Lymph Nodes ; pathology ; Middle Aged

Objective To investigate the molecular epidemiological characteristics of Staphylococcus aureus associated with bloodstream infection in hospital. Methods 47 Staphylococcus aureus strains isolated from bloodstream in PLA General Hospital were collected from January 2006 to December 2008. Susceptibility of the strains to 11 antimicrobial agents was detected and DNA homology of them was analyzed with Rep-based DiversiLab~(TM) Microbial Typing System. Panton-Valentine leukocidin (PVL)gene was determined by PCR. For methicillin-resistant Staphylococcus aureus (MRSA) strains,the genotypes of SCCmec were determined and ST239 clone was screened with multiplex PCR. Multilocus sequence typing (MLST) was used to determine the STs of the selected isolates. Results In the 47 Staphylococcus aureus isolated from blood,methicillin-resistant strains accounted for 51.1%,all belonged to SCCmec Ⅲ type,with only 2 pvl gene positive strains identified. 12 different patterns (A-L) were found among 47 strains with Rep-PCR. All MRSA strains clustered in the A and B subtypes. Conclusion Most MRSA strains isolated from blood in PLA General Hospital belonged to ST239-MRSA-SCCmec Ⅲ clone. DiversiLab~(TM) Microbial Typing System could provide a rapid and effective method to investigate the molecular epidemiological characteristics of Staphylococcus aureus in the hospital settings.

Objective To investigate the protein and mRNA expressions of Toll-like receptor 2 (TLR2) and Toll-like receptor 4 (TLR4) on colons of rats with trinitrobenzene sulfonic acid (TNBS)- induced colitis,and to evaluate the effects of probiotics.Methods Thirty male Wistar rats were randomly divided into normal control group (NC group),model control group(UC group) and probiotics-treated group(PC group).The experimental colitis was induced by TNBS/ethanol enema.Rats in PC group were fed with Bifico [live probiotics of combined hifidobacterium(Bif),lactobaeillus(Lac) and enteroeoccus] by 2.2?10~9 CFU/d for 4 weeks.Inflammatory scores were studied.Expressions of protein and mRNA of TLR2 and TLR4 were measured by Western blot and real-time quantitative polymerase chain reaction (PCR),respectively.Results Inflammatory scores in NC group,UC group and PC group were 4.35?0.88,10.25?1.36 and 7.94?0.85,respectively.The inflammatory scores in PC group were decreased compared with that in UC group (P

Objective To evaluate the effects of probioties on inflammation,intestinal flora and mucosal tumor necrosis factor alpha(TNF-?)expression in experimental colitis rats.Methods Thirty Wistar rats were randomly divided into normal control group(NC),model control group(UC),and pro- biotics treatment group(PC).The experimental colitis were induced by trinitrobenzene sulfonie acid (TNBS)/ethanol enema.Rats in PC group were fed with Bifico[live probiotics of combined bifidobacte- rium(Bif),lactobacillus (Lac) and enterococcus]by 2.2?10~9 colony-forming unit (CFU)/d for 4 weeks.Inflammatory scores and mucosal morphological changes under light microscopy were studied. Plasma endotoxin levels,expressions of TNF-?and interleukin-6 (IL-6) in mueosa were measured. Enteric microorganisms in cecum were fostered with standard methods.Results Inflammatory scores in PC group decreased compared with those in UC group(7.94?0.85 vs 10.25?1.36,P＜0.05),but still higher than those in NC group(7.94?0.85 vs 4.35?0.88,P＜0.01).There was a significant alteration in the enteric microbial flora,Bif and Lac were decreased significantly in UC group,Bifico supplement ameliorated this imbalance.Plasma endotoxin and mucosal TNF-?levels in PC were lower than those in UC group[endotoxin:(93.33?21.22)pg/ml vs (121.25?39.07)pg/ml;TNF-?:67.51?14.63 vs 85.99?18.17,P＜0.05],but higher than those in NC group[endotoxin:(93.33?21.22) pg/ml vs(35.20?15.12)pg/ml;TNF+?:67.51?14.63 vs 43.28 4?19.98,P＜0.01].There was no statistically significant difference in mucosal IL-6 levels between PC group and UC group,though its level in PC group was lower than that in UC group(155.22?34.01 vs 184.09?29.11,P＞0.05),but higher than that in NC group(155.22?34.01 vs 108.73?37.35,P＜0.01).Conclusions Probiotics can attenuate inflammation of experimental colitis of rats through reinstituting gut flora bal- anee.Improving gut flora imbalance,reducing endotoxin and pro-inflammatory cytokines may be the effects of probiotics.

Background Basic fibroblast growth factor(bFGF)secreted by cornea after injury is important to cytothesis,collagen fibers reconstruction and axons recovery.However,the local bFGF is not enough for the reparation process.Objective This study aimed to observe the findings of corneal collagen and nerve recovery under the confocal microscopy through focusing(CMTF) in the eyes with intervene of exogenous recombinant bFGF(rbFGF) after excimer laser in situ keratomileusis(LASIK).Methods LASIK rabbit models were binocularly created in 34 clean New Zealand white rabbits.The tobramycin combined with dexamethasone were dropped after operation for 10 days in bilateral eyes.rbFGF was topically administered in the right eyes of rabbits from 1 day through 3 months after LASIK,and lubricant was used in the left eyes at the same way.The corneal collagen and nerve recovery,keratocyte and endothelial cell counting were observed with CMTF at the 1st week,2nd week,2nd month,3rd month and 5th month after LASIK.Results Total 19 rabbits were meted the request of LASIK models.The keratocyte densities in anterior stroma of both groups reached the lowest level at the 2nd week and the highest level at the 3rd month.Otherwise,haze changed on the contrary.No statistically significant differences were found in anterior stroma keratocyte densities,haze grade,grey value between rbFGF group and lubricant group at various time points after operation(P＞0.05).The nerve cord densities of both groups were increased gradually,and those under the epithelial basement membrane were more dominant.The nerve density of the anterior stroma of rbFGF group was significant higher than the lubricant one in the 2nd group(P=0.038).The considerably elevated the subepithelial nerve density value was also seen in rbFGF group compared with lubricant at 5 months after operation(Z=-2.060,P=0.039).No any corneal neovascularization occurred in both groups through experiment duration.The positive correlation was found between grey value with haze grade in rbFGF group(b=22.687,F=37.975,P=0.000) and lubricant group(b=20.410,F=18.516,P=0.000).However,haze grade was not significant correlated with stromal keratocyte density(rbFGF group:b=0.001,F=0.164,P=0.668;lubricant group:b=-0.002,F=1.896,P=0.178).Conclusion Exogenous bFGF can improve the recovery of corneal nerve and regeneration of keratocyte after LASIK.No evidence of bFGF promoting corneal neovascularization is found in this experiment.

Objecfive To investigate antibiotic resistance,carbapenemase genotype and the molecular epidemiology of multidrug-resistant Acinetobacter baumannii (Aba) collected from 3 military hospitals in China.Methotis The minimum inhibitory concentrations (MIC) were examined by ager dilution method.Genotypes of carbapenemases were amplified by multiplex PCR and its products were sequenced.PCR was used to detect per gene,Homology of the resistant isolates was analyzed by pulse-field gel electrophoresis(PFGE).Results Among the 64 MDRA strains,78.1%(50)strains possessed blaOXA-23 gene,89.1%(57) carried Class 1 integrase gene,39.1% (25) with blaPER-1 gene,and 1 strain with blaOXA-58-like gene.PFGE showed that 13(A,B,C,D,E genotype) different clones were identified in these strains.A,B,and U clones were the predominant clones in three hospitals,respectitively.Conclusion OutbreaEs of muitidrug-rcsistant Aba occurred at 3 military hospitals with the most prevalent carbapenemase as OXA-23 enzyme.OXA-58 type of carbapenemase and per-1 in Aba were also isolated.

OBJECTIVETo investigate the feasibility of in vivo tumor detection using magnetic resonance (MR) molecular imaging with targeted magnetic nanoparticles as imaging probe.

METHODSTargeted probe was synthesized by covalently linking the recombinant human gonadotropin releasing hormone analog (the targeting portion) with the ultrasmall superparamagnetic iron oxide nanoparticles (the imaging portion). The imaging portion served as the control material. The in vitro tumor cell experiment and the in vivo experiment using nude mice bearing tumors were carried out to test the targeting ability of the probe. In the in vitro experiment, the targeting probe and control materials were incubated separately with A549 cells which had high affinity to gonadotropin releasing hormone. Then the cells were taken out and lysed. The resultant solution was then subjected to MR imaging. The T2 value of the solutions was measured and compared. In the in vivo experiment, the targeting probe was administered into nude mice bearing A549 tumors. Dynamic MR imaging was carried out to measure the signal and T2 value of the tumor. The control material was also administered into control group of nude mice, and dynamic magnetic resonance imaging was performed. The T2 value of the tumor in both groups were recorded and compared.

RESULTSBoth the in vitro and in vivo experiments proved the targeting ability of targeted probe. Compared with control material, the targeting probe had higher combining ability with tumor cells.

CONCLUSIONMR molecular imaging of tumor can be realized by using targeting magnetic nanoparticles.

Adenocarcinoma ; diagnosis ; pathology ; Animals ; Cell Line, Tumor ; Dextrans ; metabolism ; Drug Delivery Systems ; Feasibility Studies ; Female ; Gonadotropin-Releasing Hormone ; analogs & derivatives ; metabolism ; Humans ; Image Enhancement ; methods ; Lung Neoplasms ; diagnosis ; pathology ; Magnetic Resonance Imaging ; methods ; Magnetics ; Magnetite Nanoparticles ; Male ; Mice ; Mice, Nude ; Molecular Imaging ; Nanoparticles ; Neoplasm Transplantation ; Recombinant Proteins ; metabolism

Primary thyroid lymphomas (PTLs) are closely correlated with the autoimmune reaction of thyroid. However, the molecular mechanisms of PTLs are still unclear. It is really necessary to improve the ability to differentiate between benign and malignant PTLs along with the introduction of some new molecular biology methods. The diagnosis and prognosis of PTLs depend on their histological features, pathological classification, and clinical stages. Customized therapy of PTLs becomes possible with the further advances in lymphoma's pathological classification, clinical stages, and international prognosis index standard.
Humans ; Lymphoma ; diagnosis ; pathology ; therapy ; Thyroid Neoplasms ; diagnosis ; pathology ; therapy