中国免疫学杂志
中國免疫學雜誌
중국면역학잡지
CHINESE JOURNAL OF IMMUNOLOGY
2015年
2期
176-179
,共4页
头孢曲松%脑损伤%脑水肿%Glu%GLT-1
頭孢麯鬆%腦損傷%腦水腫%Glu%GLT-1
두포곡송%뇌손상%뇌수종%Glu%GLT-1
Ceftriaxone%TBI%Brain edema%Glu%GLT-1
目的:观察β-内酰胺抗生素头孢曲松对创伤性脑损伤大鼠海马谷氨酸( Glutamate,Glu)及谷氨酸转运体-1(Glutamate transporter subtype-1,GLT-1)的影响。方法:将60只健康成年SD大鼠随机分三组:假手术组(Sham组)、脑创伤模型组( TBI组)、头孢曲松组( CTX组),采用改良Feeney法制备大鼠创伤性脑损伤模型,致伤后立即腹腔注射头孢曲松(200 mg/kg)。伤后6 h、12 h、24 h及48 h取材,采用干湿比重法测定脑组织含水量;高效液相色谱法检测大鼠海马兴奋性氨基酸Glu水平;免疫组织化学法及Western blot法检测大鼠海马组织GLT-1的分布及表达情况。结果:模型组大鼠较Sham组相比,脑组织含水量明显增加( P<0.05),海马区Glu水平显著升高( P<0.05),大鼠海马GLT-1的蛋白表达量明显下调( P<0.05)。与模型组大鼠比较,头孢曲松治疗组大鼠脑水肿减轻(P<0.05),大鼠海马Glu水平明显下降(P<0.05),GLT-1的蛋白表达量上调( P<0.05)。结论:β-内酰胺抗生素头孢曲松可以阻断兴奋性神经毒性,减轻脑水肿程度。
目的:觀察β-內酰胺抗生素頭孢麯鬆對創傷性腦損傷大鼠海馬穀氨痠( Glutamate,Glu)及穀氨痠轉運體-1(Glutamate transporter subtype-1,GLT-1)的影響。方法:將60隻健康成年SD大鼠隨機分三組:假手術組(Sham組)、腦創傷模型組( TBI組)、頭孢麯鬆組( CTX組),採用改良Feeney法製備大鼠創傷性腦損傷模型,緻傷後立即腹腔註射頭孢麯鬆(200 mg/kg)。傷後6 h、12 h、24 h及48 h取材,採用榦濕比重法測定腦組織含水量;高效液相色譜法檢測大鼠海馬興奮性氨基痠Glu水平;免疫組織化學法及Western blot法檢測大鼠海馬組織GLT-1的分佈及錶達情況。結果:模型組大鼠較Sham組相比,腦組織含水量明顯增加( P<0.05),海馬區Glu水平顯著升高( P<0.05),大鼠海馬GLT-1的蛋白錶達量明顯下調( P<0.05)。與模型組大鼠比較,頭孢麯鬆治療組大鼠腦水腫減輕(P<0.05),大鼠海馬Glu水平明顯下降(P<0.05),GLT-1的蛋白錶達量上調( P<0.05)。結論:β-內酰胺抗生素頭孢麯鬆可以阻斷興奮性神經毒性,減輕腦水腫程度。
목적:관찰β-내선알항생소두포곡송대창상성뇌손상대서해마곡안산( Glutamate,Glu)급곡안산전운체-1(Glutamate transporter subtype-1,GLT-1)적영향。방법:장60지건강성년SD대서수궤분삼조:가수술조(Sham조)、뇌창상모형조( TBI조)、두포곡송조( CTX조),채용개량Feeney법제비대서창상성뇌손상모형,치상후립즉복강주사두포곡송(200 mg/kg)。상후6 h、12 h、24 h급48 h취재,채용간습비중법측정뇌조직함수량;고효액상색보법검측대서해마흥강성안기산Glu수평;면역조직화학법급Western blot법검측대서해마조직GLT-1적분포급표체정황。결과:모형조대서교Sham조상비,뇌조직함수량명현증가( P<0.05),해마구Glu수평현저승고( P<0.05),대서해마GLT-1적단백표체량명현하조( P<0.05)。여모형조대서비교,두포곡송치료조대서뇌수종감경(P<0.05),대서해마Glu수평명현하강(P<0.05),GLT-1적단백표체량상조( P<0.05)。결론:β-내선알항생소두포곡송가이조단흥강성신경독성,감경뇌수종정도。
Objective:To sduty the effect of β-lactam antibiotics efiriaxone on the levels of glutamate and glutamate transporter subtype-1 in hippocampus following traumatic brain injury in rats.Methods: All rats were divided randomly into three groups:sham group;TBI group and CTX group.The rat model of TBI were made by modified Feeney method ,and treated with ceftriaxone immediately after injury ( 200 mg/kg ).Wet-dry weight method was used to evaluate brain edema.The content of glutamate in hippocampus was measured with the high performance liquid chromatography.The expression of GLT-1 in hippocampus areas was tested by immunohisto-chemical and Western blot methods.Results:Compared with TBI group ,TBI-induced cerebral edema was significantly attenuated ( P<0.05 ) , the content of glutamate in hippocampus was were significantly decreased ( P<0.05 ) , the level of GLT-1 were significantly increased in CTX group ( P<0.05 ).Conclusion: β-lactam antibiotics ceftriaxone can block the excitatory neurotoxicity , reduce the extent of brain edema.