简介:Duringperipheralnervetranspositionrepair,ifthediameterdifferencebetweentransposednervesislargeormultipledistalnervesmustberepairedatthesametime,traditionalepineurialneurorrhaphyhastheproblemofhightensionatthesuturesite,whichmayevenleadtothefailureofnervesuture.Weinvestigatedwhetherasmallgapbio-sleevesuturewithdifferentinnerdiametersatbothendscanbeusedtorepaira2-mmtibialnervedefectbyproximaltranspositionofthecommonperonealnerveinratsandcomparedtheresultswiththerepairseenafterepineurialneurorrhaphy.Threemonthsaftersurgery,neurologicalfunction,nerveregeneration,andrecoveryofnerveinnervationmusclewereassessedusingthetibialnervefunctionindex,neuroelectrophysiologicaltesting,musclebiomechanicsandwetweightmeasurement,osmicacidstaining,andhematoxylin-eosinstaining.Therewasnoobviousinflammatoryreactionandneuromaformationinthetibialnerveafterrepairbythesmallgapbio-sleevesuturewithdifferentinnerdiametersatbothends.Theconductionvelocity,musclestrength,wetmuscleweight,cross-sectionalareaofmusclefibers,andthenumberofnewmyelinatednervefibersinthebiosleevesuturegroupweresimilartothoseintheepineurialneurorrhaphygroup.Ourfindingsindicatethatsmallgapbio-sleevesuturewithdifferentinnerdiametersatbothendscanachievesurgicalsuturebetweennervesofdifferentdiametersandpromoteregenerationandfunctionalrecoveryofinjuredperipheralnerves.
简介:Themostimportantriskfactorforstrokeandneurodegenerationisaging.Infact,survivalafterstrokediminisheslargelywithaging.Infact,recoveryafterbrainarteryocclusionisdramaticallyworsenedbyaging,evennormalagingisassociatedwithneurondamageandcognitivedecline.Mechanismsinvolvedinaging-related,cognitivedeclineandsusceptibilitytoneurondamageinstrokeandneurodegenerationarelargelyunknown.Oneofthemostimportant
简介:Thecurrentstudydemonstratedthatinjuryofthespinalcordlateralfuniculusoccursinlivercirrhosis.Thisstudysoughttocomparethemorphologyofthethoracicandlumbarcord,theexpressionoffunctionalproteins,andchangesinvesselsbetweenlivercirrhosisandnon-cirrhosiscorpses.Resultsshowedthatinthelivercirrhosisgroup,thehepaticveinexpanded,thegastrointestinaltractwasfullofcoagulatedblood,blood-stasiswaseasilyseenintheveniplexofthevertebralcanalandthelumbarspinalcord,andthecellbodiesoftheanteriorhorninthethoracicandlumbarcordweresmallerthanthoseinnon-cirrhosiscorpses.Inaddition,nervecellsshrank,Nisslbodieswereconcentratedwithobscurednuclei,andneurofilamentandsynapsincontainingcellbodiesoftheanteriorhornandwhitematterdecreasedinthelivercirrhosisgroup.Theseexperimentalfindingsindicatethatabnormalcirculationofthespinalcord,resultingfromhemodynamicchangeofcirrhoticportalhypertension,maybethemostsignificantcauseofhepaticmyelopathy.