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,2002,16(1):17~22JournalofAnhuiTechnicalTeachersCollege吕锦芳 陈 燕(, 233100) :采用离体器官实验法,将家兔小肠分段,置于恒温通气麦氏浴皿培养液中,分别加入不同处理因素,以观察它们对小肠平滑肌运动的影响。试验结果表明:①平滑肌具有自动节律性、较大的展长性、紧张性、但节律性较差等生理特性。机械刺激可明显影响平滑肌的运动,2±0.5s内收缩张力与正常水平相比差异极显著(P0.001)。温度改变、酸碱变化均抑制平滑肌运动。能引起平滑肌兴奋的药物有乙酰胆碱(Ach)、新斯的明(Neo)等,使平滑肌收缩活动受抑制的药物有阿托品(Atr)、肾上腺素(Adr)等。②不同肠段对各种因素的敏感性存在差异。一般十二指肠最为敏感,空肠次之,回肠最差。 :离体平滑肌;小肠运动;温度;机械;酸碱度;药物 :Q959.836 :A :1007-3302(2002)01-0017-06 ,,、。,。[1]。,、、、[1~8]。、、,,,,。,,。,,BL-310(),Windows98、,,。:2001-11-06、[9],,。,。1 1.1 1.1.1 2~3kg4(),。1.1.2 、BL-310、HU-I(,50g,5g)、、L、、()、、、、、、、。1.1.3 (1g)10-5mol/L10-4mol/L;(10mg/ml)0.1%1%;(1mg/2ml)10-4mol/L;(1mg/ml)10-4mol/L;[10];NIHCIINNaOH。1.2 1.2.1 38±0.5℃,38℃20ml。L,。24h,1h。,,3~4cm、、37~38℃,,。37~38℃[11]。1.2.2 ,,,。,(1~2/)。BL-310Ch1。“”,:G(100),T(DC),F(10KHZ),(2.5s/div5.0s/div)。1.2.3 ,5min,,(/)、(g),(:)。,,38±0.5℃,。,,,()。1.2.4 ±(X±SD),t。2 2.1 、,、、、,。,(1)。、、,、、、(1)。 11 (/,g)1215.417±2.71220.167±4.46925.417±4.231123.517±0.1911.658±0.3210.597±0.2022.2 ,,2±0.5s,,,18 20023.517±0.191g7.390±1.617g,(P0.001)。、,(P0.01)。5±0.5s,。1min,。,。2.3 3 10-5mol/LAch0.2ml(A)(B)19161 30±0.5℃,,。38℃,。5~10min,,、。42±0.5℃,,,(2)。38℃,。、、。,,。,,,[12]。2.4 INHCl1NNaOH0.1ml,pH。,。、、。,,。2min,。pH。2.5 (Ach)10-5mol/LAch0.2ml,(0.5s),,,,,,,(3A),(3B),(2)。,20~30s,、15~20s。Ach(10-5mol/L1.0ml)(10-4mol/L),,,(3)。2 10-5Ach0.2ml(/,g)1220.083±2.698** 24.167±3.689* 27.667±3.499 123.727±0.263***1.767±0.260**0.652±0.193****P0.001,**P0.01,*P0.05vscontrol3 、Ach(/,g)(mol/L)(ml)(/)(g)1210-50.220.083±2.698 3.727±0.263 1210-50.525.417±3.3703.990±0.4171210-51.023.333±3.114+3.893±0.2461210-40.521.167±2.443 3.844±0.252+P0.001,P0.01,+P0.05vs10-5Ach0.2mlgroup2.6 (Atr)0.1%0.1ml,,。、,。1.0ml,,。1%1.0ml,,。[13]。2.7 Ach(10-5mol/L0.1ml),,0.1%Atr0.1ml,,。Atr,,Ach,,Ach,,2~4min。,AchAtr(4)。20 20024-2AchAtr2.8 (Neo)10-4mol/L0.1ml,,。Ach,,Ach,。Ach[13]。2.9 (Adr)10-4mol/L0.1ml,,,,(5)。,Adr。、,。5 Adr3 3.1 ,,,[9]。,,。,,,,,,[7],[14]。3.2 ,。21161 Ach(),M,,[13]。:①Ach;②Ach,,[16]。Ach?Ach[17]。Ach[16]。Ach,,。,Ach,Ach。AtrAch,,,Atr,,M[18],。,,,AchAch[18]。Ach,。[13],Adr(α-β-),[18]。3.3 ,。,,,。,,[12]。,。pH,,,pH,pH,。,,pH[9]。[ ][1] TodaN,Nicotine-inducedrelaxationinisolatedcaninecerebralarteries[J].JPharmacolExpTher,1975,193:376[2] .[J].,198,12(1):1~8[3] ,.[J].,1984,9(2):147~152.[4] ,,,.15-[J].,1986,7(2):125~127[5] ,.11M[J].,1988,9(2):115~118.[6] ,,,.、[J].,1993,10(1):25~27[7] ,.、、[J].,1997,13(2):133~137[8] .[J].2001,17(2):200~202[9] .[M]..:,1999.170~184[10] ,.[M].:,1987.126-127[11] ,.[M].:,1998,55-56[12] .[M]..:,1999.33-34[13] .[M]..:,1986,50-91[14] .[J].,1988,40(1):70-76[15] .[M]..:,1998,104-128[16] ,.[J].,1987,8(2):105-109[17] ,.[J].,1997,13(4):292-294[18] .[M].:,1999,170-174(下转第28页)22 2002[1] .[M].:,1998,246-248[2] ,,.[J].,1999,11(6):10-11[3] ,[M].,1994,715-722[4] ElliotMA,etalStudiestodeterminewhetheraninteractiorexistsamongboron,calcium,andcholeciferolontheskeletaldevelopmentofbroilerchichens[J].PoultSci,1992Apr,71:4,677-690[5] ,.[M].,1990,172-175[6] WilsonJH;RuszlerPLLongtermeffectsofborononlayerbonestrengthandproductionparameters[J].BrPoultSci,1998Mar,39:1,11-15[7] SiskDB,etalExperimentalacuteinorganicborontoxicosisinthegoat:effectsonserumchemistryandCSFbiogenicamines[J].VetHumToxicol,1990Jun,32:3,205-211[8] ,[J].,1999,20(8):35-36[9] .[M].,1991,343[10] 、.[M].,1996,92-94DeterminetheContentofBoroninPartsFeedIngredientinFengyangSHANGChang-fa,ZHAOCui-hong,HUXin-feng,SUNXue-qin(AnhuiTechnicalTeachersCollege,Fengyang,233100) Abstract:Boronisanessentialtraceelementtohigherplantsandanimals.ThisarticlehasbeenadoptedcurcumircolormetryanalyseanddeterminedthecontentofboroninpartsfeedingredientinFengyangarea.Ithasdeterminedthequantityofboroninthirty-nine-sortsforages.Forexample:maize(0.0761μg/g),wheat(0.0194μg/g),Kaoliang(0.0220μg/g),maize-cake(0.7231μg/g),bran(0.0229μg/g),distillersgrains(0.1516μg/g),wild-lucerne(0.4630μg/g),lucerne(floweringphase0.2050μg/g),clover(0.1213μg/g),chinesecabbage(0.2386μg/g),sweet-potato(0.1086μg/g),carrot(0.0603μg/g)andete.There-sultprovidescientificbasisforresearchofboronandcompoundingbalanceforageofboron.KeyWords:Boron;Forage;Fengyang(上接第22页)EffectsoftheDifferentFactorsAdinisteredontheIsolatedSmoothMuscleinRabbitsSmallIntestineLUJin-fang,CHENYan*(AnhuiTechnicalTeachersCollege,*graduatein2001,Fengyang233100) Abstract:Thedifferentfactorswereadministered,observingtheeffectsontheintestinesmoothmusclesinrabbits.Theresultsshowedthatthesmoothmuscleshavethephysiologicpropertiesofinotropism,auto-maticity,positivestaircaseandpost-restpotentiation.So,mechanicalincentivecansignificantlyactivatethecontractionofsmoothmuscles.Temperature,acidinityandalkalinityalteredwerebothmarkedinhibitdcon-tractility.Therearemanymedicamentsthatcanenhancedexcitabilityofthesmoothmuscles,suchasacetyl-cholineandneostigmini.Whileadrenalinandatropineetccaninhibitedthecontraction. KeyWords:Isolatedsmoothmuscles;Contractility;Temperature;Machine
本文标题:不同处理因素对离体兔小肠平滑肌运动的影响
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