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1、第24卷第25期中國現(xiàn)代醫(yī)學(xué)雜志Vo1.24No.252014年9月ChinaJournalofModernMedicineSep.2014文章編號(hào):1005—8982(2014)25—0020—06·論著·鞘內(nèi)注射昂丹司瓊對(duì)神經(jīng)病理性疼痛大鼠的影響唐素林,秦明,王德廣(1.徐州醫(yī)學(xué)院江蘇省麻醉學(xué)重點(diǎn)實(shí)驗(yàn)室;2.徐州醫(yī)學(xué)院人體解剖教研室,江蘇徐州221002)摘要:目的觀察鞘內(nèi)注射5一HL受體拮抗劑昂丹司瓊對(duì)大鼠神經(jīng)病理性疼痛行為及脊髓背角5-HT受體表達(dá)的影響。方法采用大鼠坐骨神經(jīng)結(jié)扎制作慢性神經(jīng)病理性疼痛模型。坐骨神經(jīng)結(jié)扎7d后,采用熱縮足反射潛伏期和機(jī)械縮足反射閾值方法檢測(cè)大鼠鞘內(nèi)注射
2、昂丹司瓊前后痛覺閾值的變化。然后處死大鼠,用免疫組織化學(xué)染色法和"Westernblot方法檢測(cè)大鼠鞘內(nèi)注射昂丹司瓊前后脊髓背角5-HT受體的表達(dá)變化。結(jié)果鞘內(nèi)給藥前,模型組大鼠的痛覺閾值低于正常組(P<0.05),脊髓背角5-HT受體表達(dá)明顯高于正常組(P<0.05);鞘內(nèi)給藥后,5g和10g昂丹司瓊能提高模型組大鼠痛覺閾值,且大鼠脊髓背角5-HT,受體表達(dá)明顯減少(P>O.05)。結(jié)論鞘內(nèi)注射昂丹司瓊抑制脊髓5-HT。受體的表達(dá)后可以減輕大鼠慢性神經(jīng)病理性疼痛。關(guān)鍵詞:5一HT受體;坐骨神經(jīng)結(jié)扎;慢性神經(jīng)病理性疼痛;昂丹司瓊中圖分類號(hào):R一332文獻(xiàn)標(biāo)志碼:AEfectofintrath
3、ecalinjectionofondansetrononchronicneuropathicpaininratsTANGSu—Lin,QINMing,WANGDe—Guangf1.JiangsuProvinceKeyLaboratoryofAnesthesiology,XuzhouMedicalCollege;2.DepartmentofHumanAnatomy,XuzhouMedicalCollege,Xuzhou,Jiangsu221002,P.R.China)Abstract:【objective】Toinvestigatetheeffectofintrathecalinjection
4、of5一HT3receptorantagonistondansetrononpainbehaviorand5-HT3receptorsexpressioninspinalcordfollowingchronicneuropathicpaininrats.【Meth-otis】Chronicneuropathicpainmodelwasestablishedfromsciaticnerveligation.Aftermodelreplicationinthe7thday,thermalwithdrawallatency(TWL1andmechanicalwithdrawalthresholdf
5、MWwereusedtodetectthepainthresholdbeforeandafterintrathecaliniectionofondansetroninrats.Immunohistochemicalstainingandwesternblottingwereusedtodetecttheexpressionofthespinal5-HT3receptorsbeforeandafterintratheealinjectionofon—dansetroninrats.【Results】Beforeintrathecalinjectionofondansetron:thepaint
6、hresholdbyTWLandMWTinmode1ratswerelowerthanthatofcontrolrats7、onof5一HT3receptorsinthespinalcordinmodelrats(P>0.05).【Conclusion】Blockadethespinal5-HT3receptorsbyin—tratheealinjectionofondansetroncouldattenuatethechronicneuropathicpain.Keywords:5一HT3receptors;sciaticner