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丁苯酞对酒精依赖大鼠海马谷氨酸含量及NR2B表达的影响 被引量:6
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作者 杜爱林 李爽 +3 位作者 姜洪波 李文强 郝伟 张瑞岭 《中国应用生理学杂志》 CAS CSCD 2012年第1期18-19,27,共3页
目的:研究丁苯酞(NBP)对酒精依赖大鼠海马谷氨酸(Glu)含量和NNMDA受体2B亚基(NR2B)表达的影响。方法:建立酒精成瘾大鼠模型,观察戒断症状,SYBR Green I荧光实时定量PCR技术检测海马区NR2BmRNA表达,高效液相色谱法检测海马组织中谷氨酸... 目的:研究丁苯酞(NBP)对酒精依赖大鼠海马谷氨酸(Glu)含量和NNMDA受体2B亚基(NR2B)表达的影响。方法:建立酒精成瘾大鼠模型,观察戒断症状,SYBR Green I荧光实时定量PCR技术检测海马区NR2BmRNA表达,高效液相色谱法检测海马组织中谷氨酸含量。结果:模型组大鼠戒断评分比正常组明显上升(P<0.01),NBP中、高剂量组与模型组相比,戒断评分明显下降(P<0.05),差异均有显著性;模型组大鼠海马区谷氨酸含量较正常组显著降低(P<0.01),差异有显著性,而各用药组与模型组相比,海马区谷氨酸含量差异无显著性(P>0.05);实时定量PCR结果表明模型组大鼠海马区NR2BmRNA表达较正常组明显增加(P<0.05),而NBP中、高剂量组与模型组相比,海马区NR2BmRNA表达明显减少,差异有显著性(P<0.05)。结论:NBP能够减轻酒精依赖大鼠的戒断症状,可能与NBP抑制NR2BmRNA表达有关。 展开更多
关键词 丁苯酞 酒精成瘾 NMDA受体2B亚基 谷氨酸
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G-CSF对急性心肌梗死大鼠血清和心肌组织中NO、MDA、SOD含量的影响 被引量:1
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作者 张文静 孙琳 《河北北方学院学报(自然科学版)》 2011年第6期86-89,共4页
目的探讨粒细胞集落刺激因子(G-CSF)对急性心肌梗死(AMI)大鼠血清及心肌组织中一氧化氮(NO)、丙二醛(MDA)和超氧化物歧化酶(SOD)含量的影响.方法通过结扎冠状动脉前降支建立急性心肌梗死(AMI)大鼠模型,将AMI大鼠随机分为G-CSF治疗组(GAM... 目的探讨粒细胞集落刺激因子(G-CSF)对急性心肌梗死(AMI)大鼠血清及心肌组织中一氧化氮(NO)、丙二醛(MDA)和超氧化物歧化酶(SOD)含量的影响.方法通过结扎冠状动脉前降支建立急性心肌梗死(AMI)大鼠模型,将AMI大鼠随机分为G-CSF治疗组(GAMI组)、心肌梗死对照组(AMI组)和假手术组(SO组),GAMI组模型制备后3h给予生理盐水稀释的rhG-CSF(浓度为2mg/L)皮下注射10μg/kg/d,共5d.AMI组和SO组3h后给予等量的生理盐水皮下注射,共5d.最后一次给药后24h取各组大鼠血清及心肌组织检测NO、MDA、SOD的含量.结果 AMI组大鼠血清和心肌组织中MDA水平显著高于SO组(P<0.01),NO、SOD值显著低于SO组(P<0.01).GAMI组大鼠血清和心肌组织中MDA水平显著低于AMI组(P<0.05),NO、SOD值显著高于AMI组(P<0.05).结论 G-CSF能提高NO含量,增强SOD的活性.降低MDA的含量,对急性心肌梗死具有明显的保护作用. 展开更多
关键词 粒细胞集落刺激因子 急性心肌梗死 一氧化氮 丙二醛 超氧化物歧化酶
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白枕鹤幼雏佝偻病的综合防治 被引量:4
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作者 刘冰许 《四川畜牧兽医》 1997年第3期42-42,共1页
关键词 白枕鹤 幼雏 佝偻病 综合防治
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幼龄鸵鸟磷缺乏症的研究
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作者 陈云 黄义强 +5 位作者 李华 李焕友 刘展棠 邓桦 黄淑坚 赵海全 《中国兽医科技》 CSCD 1997年第2期15-17,共3页
对发生“拐腿症”的幼龄鸵鸟经病史调查、症状观察、日粮和骨质分析、血清生化测定、骨质X线检查、病理解剖及防制试验,首次确诊了幼龄鸵鸟的P缺乏症。病因研究表明,日粮中高Ca低P,Ca、P比例严重失调(5.91),致使Ca... 对发生“拐腿症”的幼龄鸵鸟经病史调查、症状观察、日粮和骨质分析、血清生化测定、骨质X线检查、病理解剖及防制试验,首次确诊了幼龄鸵鸟的P缺乏症。病因研究表明,日粮中高Ca低P,Ca、P比例严重失调(5.91),致使Ca过量而P缺乏是发病的根本原因。病鸟骨质密度降低,胫骨灰分总量减少,P含量降低,差异显著(P<0.05)。经调整日粮配方,纠正Ca、P含量及其比例后,骨质密度升高,胫骨灰分总量及P含量升高,发病率由90. 展开更多
关键词 鸵鸟 磷缺乏症 日粮配方
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长颈鹿骨软症X线表现及疗效观察
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作者 杜荣 秦健 +5 位作者 秦效苏 边其政 张春有 贾维 赵良仓 赵基丽 《中国兽医杂志》 CAS 北大核心 1999年第3期25-26,共2页
太原动物园从1979年~1991年,共饲养过7只长颈鹿,在4只自繁长颈鹿中,3只曾发生骨软症,且并发肺炎或肠炎而死亡。为此,我们对本病进行了较为长期的调查与观察,报告如下。1临诊表现我们企图利用其自然驻立状态进行X线... 太原动物园从1979年~1991年,共饲养过7只长颈鹿,在4只自繁长颈鹿中,3只曾发生骨软症,且并发肺炎或肠炎而死亡。为此,我们对本病进行了较为长期的调查与观察,报告如下。1临诊表现我们企图利用其自然驻立状态进行X线检查,曾跟随其活动,守候较长时间等... 展开更多
关键词 长颈鹿 骨软症 X线 疗效
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野生动物应激综合症的临床报道
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作者 赵有礼 郭琦 买买提.黑牙孜丁 《新疆农业科学》 CAS CSCD 1994年第6期284-285,共2页
野生动物应激综合症的临床报道赵有礼,郭琦,买买提·黑牙孜丁(新疆八一农学院,乌鲁木齐,830052)应激学说是加拿大HansSeyle在1936年发表的。应激(Stress)一词在全世界各国医学上应用越来越广泛。... 野生动物应激综合症的临床报道赵有礼,郭琦,买买提·黑牙孜丁(新疆八一农学院,乌鲁木齐,830052)应激学说是加拿大HansSeyle在1936年发表的。应激(Stress)一词在全世界各国医学上应用越来越广泛。近年应激在动物医学上也得到广泛研究和应... 展开更多
关键词 野生动物 应激综合症
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肝郁脾虚证模型大鼠下丘脑-垂体-肾上腺皮质的变化 被引量:25
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作者 李艳彦 谢鸣 +1 位作者 陈禹 王洪海 《现代生物医学进展》 CAS 2006年第4期10-12,15,共4页
目的:探讨复合造模法复制肝郁脾虚证大鼠模型的HPA轴变化及特点。方法:大鼠采用慢性束缚+过度疲劳+饮食失节法,连续三周,自然恢复一周。观察造模期间各不同时间点大鼠肾上腺重量及指数、下丘脑促肾上腺皮质激素释放激素(CRH)、血浆促肾... 目的:探讨复合造模法复制肝郁脾虚证大鼠模型的HPA轴变化及特点。方法:大鼠采用慢性束缚+过度疲劳+饮食失节法,连续三周,自然恢复一周。观察造模期间各不同时间点大鼠肾上腺重量及指数、下丘脑促肾上腺皮质激素释放激素(CRH)、血浆促肾上腺皮质激素(ACTH)及皮质酮(CORT)的变化。结果:与正常组比较,模型大鼠肾上腺重量第一周显著增加(P<0.001),第三、四周显著减低(P<0.001和P<0.01),其肾上腺指数在实验各周均显著高于正常组(P<0.05和P<0.01);下丘脑CRH第三周显著低于正常组(P<0.05),第四周回升并显著高于正常组(P<0.05);血浆ACTH在第一、三、四周均显著降低(P<0.05);血浆CORT第一周显著降低(P<0.05),第二周有所回复,第三、四周仍显著降低(P<0.05和P<0.001)。结论:该肝郁脾虚证大鼠模型存在HPA轴的功能减低,垂体对上位激素调节的反应能力减低可能是该模型的一个重要的生物学特征。 展开更多
关键词 肝郁脾虚证 动物模型 大鼠 HPA轴 复合造模法
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水貂饲喂生鱼引起贫血的防治
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作者 赵洪亮 《中国兽医杂志》 CAS 北大核心 1994年第1期31-31,共1页
水貂饲喂生鱼引起贫血的防治赵洪亮(化工部饲料添加剂中心,山东济南250014)饲喂生鱼的水貂,特别是怀孕水貂和小水貂,极易出现特殊的缺铁性贫血症,引起小水貂的死亡或降低皮毛的质量。这种特殊的水貂贫血症,是由生鱼中的三... 水貂饲喂生鱼引起贫血的防治赵洪亮(化工部饲料添加剂中心,山东济南250014)饲喂生鱼的水貂,特别是怀孕水貂和小水貂,极易出现特殊的缺铁性贫血症,引起小水貂的死亡或降低皮毛的质量。这种特殊的水貂贫血症,是由生鱼中的三甲氨氧化物引起的。生鱼的pH通常为... 展开更多
关键词 水貂 贫血病 饲料 生鱼 防治
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人参皂甙Rb1对阿尔茨海默病大鼠海马结构β-淀粉样蛋白表达的影响 被引量:12
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作者 杨吉平 赖红 +2 位作者 方欣 高旭红 李兆圣 《中国组织化学与细胞化学杂志》 CAS CSCD 2008年第4期301-305,共5页
目的观察人参皂甙Rb1对阿尔茨海默病(AD)模型大鼠学习记忆能力及海马结构β-淀粉样蛋白表达的影响。方法动物分3组:对照组、模型组及治疗组,用D-半乳糖联合三氯化铝建立AD大鼠模型,治疗组在造模后给予人参皂甙Rb1腹腔注射4周;采用Morri... 目的观察人参皂甙Rb1对阿尔茨海默病(AD)模型大鼠学习记忆能力及海马结构β-淀粉样蛋白表达的影响。方法动物分3组:对照组、模型组及治疗组,用D-半乳糖联合三氯化铝建立AD大鼠模型,治疗组在造模后给予人参皂甙Rb1腹腔注射4周;采用Morris水迷宫测试大鼠的空间学习记忆能力,用免疫组织化学方法观察海马结构β-淀粉样蛋白的表达。结果与对照组相比,模型组大鼠各时间段的逃避潜伏期均显著延长(P<0.01),海马CA1、CA3区及齿状回β-淀粉样蛋白表达的阳性细胞数明显增多(P<0.01);治疗组大鼠的逃避潜伏期较模型组明显缩短(P<0.01),海马CA1、CA3区及齿状回的β-淀粉样蛋白阳性细胞数显著减少(P<0.01)。结论人参皂甙Rb1对AD模型大鼠学习记忆损害具有明显改善作用,其机制可能与人参皂甙Rb1减少海马结构β-淀粉样蛋白的表达有关。 展开更多
关键词 人参皂甙RB1 Β-淀粉样蛋白 海马结构 阿尔茨海默病
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PKB/Akt在高脂诱导鼠肾脏损害中的作用 被引量:2
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作者 韩继武 詹晓蓉 阴惠清 《生物磁学》 CAS 2006年第1期22-24,F0003,共4页
目的:通过建立高脂血症大鼠模型,探讨单纯高脂对肾脏的损伤机制以及胰岛素传导通路中的关键酶PKB/Akt(丝氨酸/苏氨酸激酶)在高脂所致肾脏损害中的变化和意义。方法:高脂高胆固醇喂养Wistar雄性大鼠,建立胰岛素抵抗模型。分别在4周、8周... 目的:通过建立高脂血症大鼠模型,探讨单纯高脂对肾脏的损伤机制以及胰岛素传导通路中的关键酶PKB/Akt(丝氨酸/苏氨酸激酶)在高脂所致肾脏损害中的变化和意义。方法:高脂高胆固醇喂养Wistar雄性大鼠,建立胰岛素抵抗模型。分别在4周、8周、12周测定大鼠的肾功,包括血尿素蛋(BUN),肌酐(CREA);16周时测定甘油三酯(TG),胆固醇(TC),以及血糖(FBS)和胰岛素(FINS)。8周时行胰岛素增敏剂文迪雅(3mg/kg)灌胃干预四周,并行肾脏病理检查,应用免疫组化法监测PKB/Akt在肾脏的表达。结果:高脂喂饲大鼠4周后,进食量开始减少,体重增加减慢;血BUN、血CREA在4周时已升高,至8周时增加更明显(p<0.001)。文迪雅灌胃四周后肾功改善,但仍高于正常组(p<0.05)。血TG和血TC较正常组升高显著,统计学差异显著(p<0.05)。血胰岛素升高,但胰岛素敏感性降低,胰岛素抵抗指数增加显著,提示胰岛素抵抗形成。肾脏免疫组化PKB/Akt的表达呈现为在肾小球和肾小管分布不均,出现PKB/Akt在损伤较重的肾小球不表达,而在损伤较轻的肾小管表达减弱的现象。结论:饮食诱导的高脂血症可导致健康大鼠产生脂质肾毒性损害以及肾功的降低,并可产生胰岛素抵抗。胰岛素传导通路的损害在肾小球和肾小管表达不同,说明其可能是产生肾脏损伤及胰岛素抵抗的又一原因。胰岛素增敏剂可改善胰岛素抵抗及肾功。 展开更多
关键词 高脂血症 脂质肾毒性 胰岛素抵抗 丝氨酸/苏氨酸激酶 胰岛素增敏剂
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过度训练对大鼠运动能力影响的实验研究
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作者 张念坤 《科技信息》 2010年第31期I0155-I0156,共2页
通过建立过度训练大鼠模型,应用运动学方法,观察大鼠在过度训练状态下运动能力的变化特点,经过与正常对照组,一般训练组的对比,探讨过度训练对大鼠运动能力影响的生理机制。
关键词 过度训练 运动能力
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一种新型AIDS动物模型——小鼠艾滋病 被引量:2
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作者 阎铭杰 贾锐胜 《中国兽医杂志》 CAS 北大核心 1991年第12期40-42,共3页
1985年,Mosier等人用称之为LP-BM5小鼠白血病病毒LP-BM5 Mulv接种易感品系小鼠,引起小鼠免疫抑制性疾病。其临床症状和特征,免疫缺陷方面与人类艾滋病AIDS极为相似。故称为小鼠获得性免疫缺陷综合征(Murine Acquired Immune Deficency S... 1985年,Mosier等人用称之为LP-BM5小鼠白血病病毒LP-BM5 Mulv接种易感品系小鼠,引起小鼠免疫抑制性疾病。其临床症状和特征,免疫缺陷方面与人类艾滋病AIDS极为相似。故称为小鼠获得性免疫缺陷综合征(Murine Acquired Immune Deficency Syndrome,MAIDS)即小鼠艾滋病。其特征是高丙球蛋白血症,淋巴腺病,严重免疫缺陷,宿主的易感性增强,B细咆淋巴瘤。病毒感染后小鼠4—10月死亡。 展开更多
关键词 动物模型 小鼠 艾滋病
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沙棘籽油、果汁对急性放射病小鼠防护作用的初步研究 被引量:1
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作者 程体娟 朱玉真 +2 位作者 李兴玉 周桂华 高丽英 《沙棘》 1995年第4期32-35,共4页
本文用^(60)COγ-射线使小鼠产生急性放射病.小鼠灌胃沙棘籽油和果汁,观察其防护作用.结果表明:沙棘油和果汁大剂量(4.75和14.4g/kg)可使小鼠30d存活率分别提高30%和35%.籽油(5.95和2.98g/kg)和果汁(18和9g/kg)还能降低受照小鼠PCE微核... 本文用^(60)COγ-射线使小鼠产生急性放射病.小鼠灌胃沙棘籽油和果汁,观察其防护作用.结果表明:沙棘油和果汁大剂量(4.75和14.4g/kg)可使小鼠30d存活率分别提高30%和35%.籽油(5.95和2.98g/kg)和果汁(18和9g/kg)还能降低受照小鼠PCE微核率,此外籽油11.9、5.95和2.98g/kg与果汁14.4和7.2g/kg还能提高小鼠脾CFU—S数,籽油5.95g/kg能使受照小鼠BMNC数显著提高.提示沙棘籽油和果汁对小鼠急性放射病均有防护作用. 展开更多
关键词 沙棘籽油 沙棘果汁 射线照射 小鼠 防护作用
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Key factors in developing the trinitrobenzene sulfonic acid-induced post-inflammatory irritable bowel syndrome model in rats 被引量:12
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作者 Hong-Yan Qin Hai-Tao Xiao +3 位作者 Justin CY Wu Brian M Berman Joseph JY Sung Zhao-Xiang Bian 《World Journal of Gastroenterology》 SCIE CAS CSCD 2012年第20期2481-2492,共12页
AIM:To investigate the key factors in developing the trinitrobenzene sulfonic acid(TNBS)-induced postinflammatory irritable bowel syndrome(PI-IBS)model in rats. METHODS:TNBS was administered to rats at the following c... AIM:To investigate the key factors in developing the trinitrobenzene sulfonic acid(TNBS)-induced postinflammatory irritable bowel syndrome(PI-IBS)model in rats. METHODS:TNBS was administered to rats at the following conditions:(1)with different doses(20,10,5 mg/0.8 mL per rat);(2)with same dose in different concentrations(20 mg/rat,25,50 mg/mL);(3)in different ethanol percentage(25%,50%);and(4)at depth either 4 cm or 8 cm from anus.At 5 d and 4 wk after TNBS administration,inflammation severity and inflammation resolution were evaluated.At 4 and 8 wk after TNBS application,visceral hyperalgesia and enterochromaffin(EC)cell hyperplasia were assayed by abdominal withdrawal reflex test,silver staining and capillary electrophoresis. RESULTS:Our results showed that:(1)TNBS induced dose-dependent acute inflammation and inflammation resolution.At 5 d post TNBS,the pathological score and myeloperoxidase(MPO)activity in all TNBS treated rats were significantly elevated compared to that of the control(9.48±1.86,8.18±0.67,5.78± 0.77 vs 0,and 3.55±1.11,1.80±0.82,0.97±0.08 unit/mg vs 0.14±0.01 unit/mg,P<0.05).At 4 wk post TNBS,the pathological score in high and median dose TNBS-treated rats were still significantly higher than that of the control(1.52±0.38 and 0.80±0.35 vs 0,P<0.05);(2)Intracolonic TNBS administration position affected the persistence of visceral hyperalgesia.At 4 wk post TNBS,abdominal withdrawal reflex (AWR)threshold pressure in all TNBS-treated groups were decreased compared to that of the control(21.52 ±1.73 and 27.10±1.94 mmHg vs 34.44±1.89 mmHg,P<0.05).At 8 wk post TNBS,AWR threshold pressure in 8 cm administration group was still significantly decreased(23.33±1.33 mmHg vs 36.79±2.29 mmHg,P<0.05);(3)Ethanol percentage affected the TNBS-induced inflammation severity and visceral hyperalgesia.In TNBS-25%ethanol-treated group,the pathological score and MPO activity were significantly lowered compared to that of the TNBS-50%ethanoltreated group,while AWR threshold pressure were significantly elevated(36.33±0.61 mmHg vs 23.33±1.33 mmHg,P<0.05);and(4)TNBS(5 mg/0.8 mL per rat, in 50%ethanol,8 cm from anus)-treated rats recovered completely from the inflammation with acquired visceral hyperalgesia and EC cell hyperplasia at 4 wk after TNBS administration.CONCLUSION:TNBS dosage,concentration,intraco-lonic administration position,and ethanol percentage play important roles in developing visceral hyperalgesia and EC cell hyperplasia of TNBS-induced PI-IBS rats. 展开更多
关键词 Post-inflammatory Irritable bowel syndrome Rat model Trinitrobenzene sulfonic acid Key factors
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Keratinocyte growth factor gene therapy ameliorates ulcerative colitis in rats 被引量:11
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作者 Chun-Jie Liu Ji-De Jin +2 位作者 Tong-De Lv Zu-Ze Wu Xiao-Qin Ha 《World Journal of Gastroenterology》 SCIE CAS CSCD 2011年第21期2632-2640,共9页
AIM:To investigate the effect of keratinocyte growth factor(KGF) gene therapy in acetic acid-induced ulcerative colitis in rat model.METHODS:The colitis of Sprague-Dawley rats was induced by intrarectal infusion of 1 ... AIM:To investigate the effect of keratinocyte growth factor(KGF) gene therapy in acetic acid-induced ulcerative colitis in rat model.METHODS:The colitis of Sprague-Dawley rats was induced by intrarectal infusion of 1 mL 5%(v/v) acetic acid.Twenty-four hours after exposed to acetic acid,rats were divided into three experimental groups:control group,attenuated Salmonella typhimurium Ty21a strain(SP) group and SP strain carrying human KGF gene(SPK) group,and they were separately administered orally with 10% NaHCO3,SP or SPK.Animals were sacrificed and colonic tissues were harvested respectively on day 3,5,7 and 10 after administration.Weights of rats,colonic weight/length ratio and stool score were evaluated.Histological changes of colonic tissues were examined by hematoxylin and eosin(HE) staining method.The expression of KGF,KGF receptor(KGFR) and TNF-α were measured either by enzyme-linked immunosorbent assay or Western blotting.Immunohistochemistry was used to detect the cellular localization of KGFR and Ki67.In addition,superoxide dismutase(SOD) activity and malondialdehyde(MDA) contents in the homogenate were measured.RESULTS:Body weight and colonic weight/length ratio were declined in SPK group compared with SP and control groups(body weight:272.78 ± 17.92 g vs 243.72 ± 14.02 g and 240.68 ± 12.63 g,P < 0.01;colonic weight/length ratio:115.76 ± 7.47 vs 150.32 ± 5.99 and 153.67 ± 5.50 mg/cm,P < 0.01).Moreover,pathological changes of damaged colon were improved in SPK group as well.After administration of SPK strain,KGF expression increased markedly from the 3rd d,and remained at a high level till the 10th d.Furthermore,KGFR expression and Ki67 expression elevated,whereas TNF-α expression was inhibited in SPK group.In the group administered with SPK,SOD activity increased significantly(d 5:26.18 ± 5.84 vs 18.12 ± 3.30 and 18.79 ± 4.74 U/mg,P < 0.01;d 7:35.48 ± 3.35 vs 22.57 ± 3.44 and 21.69 ± 3.94 U/mg,P < 0.01;d 10:46.10 ± 6.23 vs 25.35 ± 4.76 and 27.82 ± 6.42 U/mg,P < 0.01) and MDA contents decreased accordingly(d 7:7.40 ± 0.88 vs 9.81 ± 1.21 and 10.45 ± 1.40 nmol/mg,P < 0.01;d 10:4.36 ± 0.62 vs 8.41 ± 0.92 and 8.71 ± 1.27 nmol/mg,P < 0.01),compared with SP and control groups.CONCLUSION:KGF gene therapy mediated by attenuated Salmonella ameliorates ulcerative colitis induced by acetic acids,and it may be a safe and effective treatment for ulcerative colitis. 展开更多
关键词 Keratinocyte growth factor Ulcerative colitis Gene therapy Attenuated Salmonella typhimurium
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Stability of a rat model of prehepatic portal hypertension caused by partial ligation of the portal vein 被引量:8
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作者 Zhe Wen Jin-Zhe Zhang +2 位作者 Hui-Min Xia Chun-Xiao Yang Ya-Jun Chen 《World Journal of Gastroenterology》 SCIE CAS CSCD 2009年第32期4049-4054,共6页
AIM: To study the stability of portal hypertension (PHT) caused by partial ligation of the portal vein ligation (PVL) in a rat model.METHODS: Thirty male adult Wistar rats were divided into two groups: 10 in Gr... AIM: To study the stability of portal hypertension (PHT) caused by partial ligation of the portal vein ligation (PVL) in a rat model.METHODS: Thirty male adult Wistar rats were divided into two groups: 10 in Group Ⅰ received a sham operation; and 20 in Group Ⅱreceived partial PVL. Portal vein pressure (PVP) was measured at four time periods: before ligation, 2 wk, 6 wk and 10 wk postsurgery. Portal venography, blood sampling and liver and spleen pathological examinations were conducted at 10 wk after surgery.RESULTS: The PVP was 9.15± 0.58 cmH2O before ligation, and increased to 17.32 ±0.63 cmH2O 2 wk after PVL. By repeat measurement of the PVP in each rat, it was shown to remain elevated for 10 wk. There were no significant differences in the pressure measurements at 2 wk, 6 wk and 10 wk. Varices were found mainly in the mesenteric vein 2 wk after PVL, which were more obvious later, while these manifestations were similar at week 6 and week 10. Portal venography demonstrated the varices and collaterals. There was no significant change in liver pathology. The volume of the spleen was enlarged 2-fold after ligation, and the sinus of the spleen was enlarged due to congestion. Significant sinus endothelial cell proliferation was observed, but no evidence of hypersplenia was found on hemogram and biochemical examination.CONCLUSION: These findings suggest that a satisfactory prehepatic PHT rat model can be obtained by partial ligation of the portal vein, and this PHT rat model was stable for at least 10 wk. 展开更多
关键词 LIGATION Portal hypertension Portal vein RAT
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Effects of Melandrium firmum methanolic extract on testosterone-induced benign prostatic hyperplasia in Wistar rats 被引量:4
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作者 Mee-Young Lee In-Sik Shin +4 位作者 Chang-Seob Seo Nam-Hun Lee Hye-Kyung Ha Jong-Keun Son Hyeun-Kyoo Shin 《Asian Journal of Andrology》 SCIE CAS CSCD 2012年第2期320-324,共5页
Benign prostatic hyperplasia (BPH) is an age-related disease of unknown aetiology characterized by prostatic enlargement coincident with distinct alterations in tissue histomorphology. Instead of therapeutic agents ... Benign prostatic hyperplasia (BPH) is an age-related disease of unknown aetiology characterized by prostatic enlargement coincident with distinct alterations in tissue histomorphology. Instead of therapeutic agents that can cause severe side effects, plant extracts are frequently used to treat BPH. In this study, we investigated whether the Melandrium firmum methanolic extract (MFME) improves BPH, using the testosterone propionate (TP)-induced BPH rat model. Castration was performed via the scrotal route under sodium pentobarbital anaesthesia. BPH in castrated rats was generated via daily subcutaneous injections of TP (3 mg kg-1) dissolved in corn oil, for 4 weeks. MFME was administered daily by oral garage at a dose of 200 mg kg-1 for 4 weeks, along with the TP injections. The control group received injections of corn oil subcutaneously. At the scheduled termination of the experiment, all rats were killed and their prostates weighed; the relative prostate weight (prostate/body weight ratio) was calculated, and histomorphological changes in the prostate were examined. Additionally, we measured the levels of testosterone and dihydrotestosterone (DHT) in the serum and the prostate. Experimentally induced BPH led to marked decreases in the relative prostate weight and the DHT levels in the serum and the prostate. Histologically, BPH was evident in the ventral lobe of the prostate, and MFME treatment suppressed the severity of the lesions. These results indicate that MFME effectively inhibits the development of BPH induced by testosterone in a rat model. Further studies will be needed to identify the compound(s) responsibility for inducing the protective effect against BPH and determine its mechanism of action, 展开更多
关键词 benign prostatic hyperplasia DIHYDROTESTOSTERONE Melandrium firmum (S. et Z.)RoHRB PROSTATE TESTOSTERONE
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Heshouwu decoction, a Chinese herb for tonifying kidney, ameliorates hypothalamic-pituitary-testicular axis secretion in aging rats 被引量:3
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作者 Siyun Niu Suru Kou +1 位作者 Xiaochun Zhou Liang Ding 《Neural Regeneration Research》 SCIE CAS CSCD 2012年第21期1611-1617,共7页
An increasing amount of evidence demonstrates the anti-aging effect of Heshouwu in pill form. In this study, a subacute aging rat model was established by continuous intraperitoneal injection of D-galactose and treate... An increasing amount of evidence demonstrates the anti-aging effect of Heshouwu in pill form. In this study, a subacute aging rat model was established by continuous intraperitoneal injection of D-galactose and treated with Heshouwu decoction (a Chinese herb for tonifying the kidney, comprising Heshouwu pill, Herba Epimedii, Radix Salviae Miltiorrhiae, and Poria). Heshouwu pill treated rats were the positive control group. Radioimmunoassay, immunohistochemical staining, and western blot assay showed hypothalamic gonadotropin-releasing hormone, hypothalamic substance P, and serum gonadotropin levels to be significantly increased in the model rats; the concentrations of hypothalamic ~3-endorphin, and serum levels of insulin-like growth factor I and testosterone were significantly decreased. 1713- and 3[3-hydroxysteroid dehydrogenase expression in testicular tissue was also decreased. Intragastric administration of Heshouwu decoction at high (9.6 g/mL/100 g), medium (4.8 g/mL/100 g), and low (2.4 g/mlJ100 g) doses, Heshouwu decoction pretreatment at a medium dose (4.8 g/mL/100 g), and Heshouwu pill (2.06 g/mL/100 g) significantly reversed these changes. Heshouwu decoction pretreatment and high-dose Heshouwu decoction had the greatest anti-aging effects. These experimental findings indicate that Heshouwu decoction can improve hypothalamic-pituitary-testicular axis secretion in a subacute aging rat model, and prevent and delay gonadal axis aging, with an effect superior to that of Heshouwu pill. 展开更多
关键词 Heshouwu decoction pituitary gonadal axis aging gonadotropin-releasing hormone gonadotropin hydroxysteroid dehydrogenase hypothalamic-pituitary-testicular axis neural regeneration
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Zuogui pills for myelinolysis in a rat model of experimental autoimmune encephalomyelitis 被引量:2
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作者 Yongping Fan Kelong Chen +4 位作者 Kangning Li Jianping Zhou Yan Shao Hongyan Liu WenjingYang 《Neural Regeneration Research》 SCIE CAS CSCD 2011年第9期666-670,共5页
Zuogui pills have been shown to attenuate the inflammatory reaction in a rat model of experimental autoimmune encephalomyelitis (EAE). The present study attempted to investigate the pathology underlying the influenc... Zuogui pills have been shown to attenuate the inflammatory reaction in a rat model of experimental autoimmune encephalomyelitis (EAE). The present study attempted to investigate the pathology underlying the influence of Zuogui pills on myelinolysis in EAE rats. Hematoxylin-eosin and Luxol fast blue staining showed that the myelinolysis foci in the cerebrum, cerebellum, brain stem, and the spinal cord of EAE rats were significantly decreased, along with serum myelin basic protein content following treatment with Zuogui pills. 展开更多
关键词 Zuogui pill PATHOLOGY multiple sclerosis experimental autoimmune encephalomyelitis PROTECTION TREATMENT neural regeneration
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帕金森病大鼠模型制备中的常见并发症及其预防
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作者 王玲玲 何崇 +1 位作者 董洪涛 马骋 《上海实验动物科学》 1998年第2期112-113,共2页
帕金森病大鼠模型制备中的常见并发症及其预防王玲玲何崇董洪涛马骋(南京中医药大学,南京210029)用神经毒素6羟基多巴(6OHDA)作单侧黑质毁损手术,是目前较为常用的帕金森病模型制备方法[1]。据国内外有关报道,制... 帕金森病大鼠模型制备中的常见并发症及其预防王玲玲何崇董洪涛马骋(南京中医药大学,南京210029)用神经毒素6羟基多巴(6OHDA)作单侧黑质毁损手术,是目前较为常用的帕金森病模型制备方法[1]。据国内外有关报道,制备成功率仅在30%~40%左右[2... 展开更多
关键词 帕金森病 大鼠模型 手术 并发症 预防
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