浙江实用医学
浙江實用醫學
절강실용의학
ZHEJIANG PRACTICAL MEDICINE
2014年
3期
157-159
,共3页
王淼%许学兵%佘守章
王淼%許學兵%佘守章
왕묘%허학병%사수장
吗啡耐受%脑毛细血管内皮细胞%P糖蛋白
嗎啡耐受%腦毛細血管內皮細胞%P糖蛋白
마배내수%뇌모세혈관내피세포%P당단백
morphine tolerance%brain capillary endothelium cell%P-glycoprotein
目的:观察大鼠慢性吗啡耐受过程中大脑皮质毛细血管内皮细胞P糖蛋白的变化及意义。方法雄性SD大鼠,随机分为3组( n=6):慢性吗啡耐受组、生理盐水组和空白对照组。吗啡耐受组皮下注射10mg/kg的吗啡。生理盐水组皮下注射10mL/kg的生理盐水。空白对照组则不予任何处理。各组每天重复用药两次,上午8点钟和下午6点钟,连续7天给药。测定大鼠吗啡耐受形成的最大镇痛百分率(MPE%),采用免疫组化方法观察大鼠脑内皮质毛细血管内皮细胞P糖蛋白阳性面积的表达情况。结果吗啡耐受组大鼠在第1天的MPE%为(82.50±26.39)%,第3天、第5天、第7天分别下降至(68.33±27.92)%、(46.17±21.50)%和(23.17±15.41)%,与生理盐水组和空白对照组比较差异有统计学意义( P<0.05)。第7天吗啡耐受组P糖蛋白阳性面积为(0.82±0.04)%;生理盐水组P糖蛋白阳性面积为(0.53±0.01)%;空白对照组P糖蛋白阳性面积为(0.31±0.08)%,吗啡耐受组与生理盐水组和空白对照组比较,差异有统计学意义( P<0.05)。结论产生慢性吗啡耐受后,大鼠大脑皮质毛细血管内皮细胞P糖蛋白阳性面积大量表达,而生理盐水组和空白对照组显示不明显,本研究初步表明P糖蛋白参与吗啡耐受的发生机制。
目的:觀察大鼠慢性嗎啡耐受過程中大腦皮質毛細血管內皮細胞P糖蛋白的變化及意義。方法雄性SD大鼠,隨機分為3組( n=6):慢性嗎啡耐受組、生理鹽水組和空白對照組。嗎啡耐受組皮下註射10mg/kg的嗎啡。生理鹽水組皮下註射10mL/kg的生理鹽水。空白對照組則不予任何處理。各組每天重複用藥兩次,上午8點鐘和下午6點鐘,連續7天給藥。測定大鼠嗎啡耐受形成的最大鎮痛百分率(MPE%),採用免疫組化方法觀察大鼠腦內皮質毛細血管內皮細胞P糖蛋白暘性麵積的錶達情況。結果嗎啡耐受組大鼠在第1天的MPE%為(82.50±26.39)%,第3天、第5天、第7天分彆下降至(68.33±27.92)%、(46.17±21.50)%和(23.17±15.41)%,與生理鹽水組和空白對照組比較差異有統計學意義( P<0.05)。第7天嗎啡耐受組P糖蛋白暘性麵積為(0.82±0.04)%;生理鹽水組P糖蛋白暘性麵積為(0.53±0.01)%;空白對照組P糖蛋白暘性麵積為(0.31±0.08)%,嗎啡耐受組與生理鹽水組和空白對照組比較,差異有統計學意義( P<0.05)。結論產生慢性嗎啡耐受後,大鼠大腦皮質毛細血管內皮細胞P糖蛋白暘性麵積大量錶達,而生理鹽水組和空白對照組顯示不明顯,本研究初步錶明P糖蛋白參與嗎啡耐受的髮生機製。
목적:관찰대서만성마배내수과정중대뇌피질모세혈관내피세포P당단백적변화급의의。방법웅성SD대서,수궤분위3조( n=6):만성마배내수조、생리염수조화공백대조조。마배내수조피하주사10mg/kg적마배。생리염수조피하주사10mL/kg적생리염수。공백대조조칙불여임하처리。각조매천중복용약량차,상오8점종화하오6점종,련속7천급약。측정대서마배내수형성적최대진통백분솔(MPE%),채용면역조화방법관찰대서뇌내피질모세혈관내피세포P당단백양성면적적표체정황。결과마배내수조대서재제1천적MPE%위(82.50±26.39)%,제3천、제5천、제7천분별하강지(68.33±27.92)%、(46.17±21.50)%화(23.17±15.41)%,여생리염수조화공백대조조비교차이유통계학의의( P<0.05)。제7천마배내수조P당단백양성면적위(0.82±0.04)%;생리염수조P당단백양성면적위(0.53±0.01)%;공백대조조P당단백양성면적위(0.31±0.08)%,마배내수조여생리염수조화공백대조조비교,차이유통계학의의( P<0.05)。결론산생만성마배내수후,대서대뇌피질모세혈관내피세포P당단백양성면적대량표체,이생리염수조화공백대조조현시불명현,본연구초보표명P당단백삼여마배내수적발생궤제。
Objective To investigate the change of brain P-glycoprotein in the development of morphine tolerance in rats .Meth-ods Male adult SD rats were randomly divided into three groups :group morphine tolerance received morphine 10mg/kg S .C;group saline received normal saline 10mL/kg S .C .group blank received blank control .changes in tail flick latency(TFL)were expressed as percentage of maximal possible effect (MPE% ) .The change of brain P-glycoprotein response to chronic morphine tolerance were examined by immunohis-tochemistry .Results In group morphine tolerance MPE% was 82 .50% on the 1st day and gradually decreasing on the 3rd and 5th day and became 23.17% on the 7th day signifying full development of morphine tolerance .group morphine tolerance exhibited significant difference when compared to group saline and group blank ( P<0.05) .In group saline the P-glycoprotein positive area percentage was 0.53% on the 7th day ,in group blank the P-glycoprotein positive area percentage was 0.31% on the 7th day but in group morphine tolerance the P -gly-coprotein positive area percentage was significantly more than in group saline and group blank on the 7th day ( P<0.05) .Conclusions Chronic morphine exposure appears to increase P -glycoprotein in rat brain .induction of P-glycoprotein may be one mechanism involved in the development of morphine tolerance .