简介:Thecalciumchannelblocker,verapamil,hasbeenshowntoreducescarformationbyinhibitingfibroblastadhesionandproliferationinvitro.Itwasnotclearwhethertopicalapplicationofverapamilaftersurgicalrepairofthenerveinvivocouldinhibittheformationofexcessivescartissue.Inthisstudy,therightsciaticnerveofadultSprague-DawleyratswastransectedandsuturedwithNo.10-0suture.Thestomawaswrappedwithgelfoamsoakedwithverapamilsolutionfor4weeks.Comparedwiththecontrolgroup(stomawrappedwithgelfoamsoakedwithphysiologicalsaline),theverapamilapplicationinhibitedthesecretionofextracellularmatrixfromfibroblastsinvivo,suppressedtypeIandIIIcollagensecretionandincreasedthetotalnumberofaxonsandthenumberofmyelinatedaxons.Thesefindingssuggestthatverapamilcouldreducetheformationofscartissueandpromoteaxongrowthafterperipheralnerverepair.