Search results for "Artificial membranes"

showing 3 items of 3 documents

Polyurethane and PTFE membranes for guided bone regeneration: histopathological and ultrastructural evaluation.

2010

Made available in DSpace on 2013-08-12T18:17:36Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-03-01 Made available in DSpace on 2013-09-30T18:35:07Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-03-01 Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-20T14:04:24Z No. of bitstreams: 0 Made available in DSpace on 2014-05-20T14:04:24Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-03-01 Objective: The purpose of this study was to research a membrane material for use in guided bone regeneration. Study design: In this study, 25 male Wistar rats were used to analyze the biocompatibility and degradation process of biomembranes. The morphol…

MaleBone RegenerationBiocompatibilitybone substitutesPolyurethanesBone and Boneschemistry.chemical_compoundbone regenerationmedicineAnimalsRats WistarBone regenerationGeneral DentistryPolytetrafluoroethylenePolyurethanepolytetrafluoroethylenePolytetrafluoroethyleneGuided tissue regenerationGuided Tissue RegenerationGranulation tissueMembranes ArtificialAnatomy:CIENCIAS MÉDICAS [UNESCO]RatsMembranemedicine.anatomical_structureOtorhinolaryngologychemistryGiant cellpolyurethaneUNESCO::CIENCIAS MÉDICASUltrastructureSurgeryartificial membranesBiomedical engineeringMedicina oral, patologia oral y cirugia bucal
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Lipid and phase specificity of α-toxin from S. aureus

2013

AbstractThe pore forming toxin Hla (α-toxin) from Staphylococcus aureus is an important pathogenic factor of the bacterium S. aureus and also a model system for the process of membrane-induced protein oligomerisation and pore formation. It has been shown that binding to lipid membranes at neutral or basic pH requires the presence of a phosphocholine-headgroup. Thus, sphingomyelin and phosphatidylcholine may serve as interaction partners in cellular membranes. Based on earlier studies it has been suggested that rafts of sphingomyelin are particularly efficient in toxin binding. In this study we compared the oligomerisation of Hla on liposomes of various lipid compositions in order to identif…

Staphylococcus aureusPore formationLiquid ordered phaseBacterial ToxinsLipid BilayersBiophysicsBiologyBiochemistryPhase Transitionchemistry.chemical_compoundHemolysin ProteinsMembrane LipidsMembrane MicrodomainsPhosphatidylcholineBinding siteLipid raftUnilamellar LiposomesPore-forming toxinLiposomeArtificial membranesBinding SitesCell MembraneOligomerisationCell BiologyS. aureusSphingomyelinsMembraneBiochemistrychemistryMicroscopy FluorescenceMutationPhosphatidylcholineslipids (amino acids peptides and proteins)Protein MultimerizationToxinSphingomyelinBiochimica et Biophysica Acta (BBA) - Biomembranes
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Calcium sulfate and PTFE nonporous barrier for regeneration of experimental bone defects

2008

Made available in DSpace on 2022-04-28T18:55:46Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-06-01 The aim of the study was to evaluate the possibility to obtain guided bone regeneration with two types of physical barriers (calcium sulfate and PTFE nonporous barrier) in surgical defects created in rat parietal bones. In the right parietal bone the calcium sulfate barrier filled out the whole defect and in the left parietal bone the barrier of PTFE was positioned in the floor and externally to the surgical defect. After 7, 14, 30 and 45 days four animals were sacrificed in each period and the bone containing the defects were submitted to the microscopic analysis. The results of the…

Artificial membranesBone substitutesGuided tissue regenerationCalcium sulfateUNESCO::CIENCIAS MÉDICAS:CIENCIAS MÉDICAS [UNESCO]PolytetrafluoroethyleneBone regeneration
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