Inthepresentstudy,theinvolvementofL-arginine(L-Arg)NOoniheprotectiveactionofelectroacupuncture(EA)oncerebralischemicinjurywasobservedinacuteischemia-reperfusion(IR)ratmodelbytakingregionalcerebralbloodflow(r-CBF),cerebralwatercontent(CWC),andbloodnitricoxide(NO)contentsasindexes.Resultsshowedthat1)EAcouldcauser-CBFandserumNOcontenttoincreaseandCWCtolower,suggestinganprotectiveactionofEAonIRcerebralinjury;2)intravenousinjectionofL-ArgalsohadanprotectiveeffectoncerebralIRcerebralinjury,whileL-NNAhadnothiseffect;and3)pre-treatmentwithL-ArgmightstrengthentheeffectofEAfurther,whilepretreatmentwithL-NNAcouldweakenitseffect.ItindicatesthatL-Arg-NOmaybeinvolvedintheeffectofEAinprotectingthebrainfromischemicinjury.
