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1、·臨床研究·中國醫(yī)藥導報2014年1月第11卷第3期不同劑量辛伐他汀對慢性心房重構犬心房肌細胞內游離鈣離子濃度的影響王健龐軍濤1.山東省濰坊市人民醫(yī)院心內科,山東濰坊261041;2.山東省濰坊市人民醫(yī)院重癥醫(yī)學科,山東濰坊261041【摘要】目的探討不同劑量辛伐他汀劑量對慢性心房心動過速所致心房重構犬心房肌細胞內游離鈣離子(Ca)濃度的影響。方法將28只健康雜種犬隨機分為對照組、起搏組、干預1組及干預2組,每組各7只。起搏組、干預組利用快速心房起搏(ATP)建立慢性心房重構模型,干預組ATP前5d始分別給予
2、口服辛伐他汀10mg/d(干預1組)和60mg/d(干預2組)。用激光共聚焦顯微鏡技術,以Flou一3/AM作為鈣指示劑,測定四組犬心房肌細胞內游離Ca2十濃度。結果起搏組犬心房肌細胞內游離Ca濃度(162)較干預1組(140)、對照組(109)及干預2組(118)均有顯著增高,差異有統(tǒng)計學意義(P<0.05或P<0.01);干預2組犬心房肌細胞內游離Ca濃度明顯低于干預1組(P<0.05),與對照組相比,差異無統(tǒng)計學意義(P>0.05)。結論大劑量辛伐他汀能更有效抑制慢性心房重構犬心房肌細胞內鈣超載?!娟P鍵
3、詞】辛伐他汀;心房重構;鈣超載;房顫【中圖分類號】R972【文獻標識碼】A【文章編號】1673—7210(2014)01(c)-0036—03E圩ectofthedifferentdoseofSimvastatinonconcentrationofintraceUularfreeCainatrialmusclecellofdogswithchronicatrialremodelingWANGJianPANGJuntao。1.DepartmentofCardiologyInternalmedicine,theP
4、eopleSHospitalofWeifangCity,ShandongProvince,Weifang261041,China;2.IntensiveCareUnit,thePeopleSHospitalofWeifangCity,ShandongProvince,Weifang261041,China【Abstract】ObjectiveToinvestigateeffectofthedifferentdoseofSimvastatinonconcentrationsofintracellularfree
5、Cainatrialmusclecellofdogswithatrialremodelingcausedbychronicatrialtachycardia.Methods28healthymongreldogswererandomlydividedintocontrolgroup,pacinggroup,therapeuticgroup1,andtherapeuticgroup2,with7dogsineachgroup.Modelsofchronicatrialremodelingweresetupind
6、ucedbyrapidatrialpacing(ATP)inpacinggroupandtherapeuticgroup.10mgSimvastatinwasadministeredorally5daysbeforeATPintherapeuticgroup1,60mgintherapeuticgroup2.IntracellularfleeCaconcentrationsweremeasuredindogsatrialmuscleoffourgroupswithlaserconfocalmicroscopy
7、andwithFlou-3/AMascalciumindicator.ResultsConcentrationofintracellularfreeCaindogatrialmusclecellofpacinggroup(162)increasedsignificantlythanthatoftherapeuticgroup1(140),controlgroup(109)andtherapeuticgroup2(118),thedifferenceswerestatisticallysignificant(P
8、<0.05orP<0.01);intracellularfreeCaconcentrationoftherapeuticgroup1washigherthanthatoftherapeuticgroup2(P<0.05)andcomparedwithcontrolgroup,thedifferencewasstatisticallsignificantfP>0.05).ConclusionLarge