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Sprague-Dawley大鼠外周血来源间充质干细胞的动员、分离培养及鉴定 被引量:5
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作者 张继英 刘刚 +2 位作者 马栋 付维力 余家阔 《中国运动医学杂志》 CAS CSCD 北大核心 2012年第9期811-816,共6页
目的:探讨Sprague—Dawley大鼠外周血来源间充质干细胞(mesenchymal stem cells,MSC)的动员、分离培养及鉴定方法,分析其表面标记和多向分化潜能,为运动创伤中的细胞治疗和组织工程产品培育提供新来源的、可以微创获得和自体细胞... 目的:探讨Sprague—Dawley大鼠外周血来源间充质干细胞(mesenchymal stem cells,MSC)的动员、分离培养及鉴定方法,分析其表面标记和多向分化潜能,为运动创伤中的细胞治疗和组织工程产品培育提供新来源的、可以微创获得和自体细胞移植的种子细胞。方法:联合动员大鼠外周血MSC.采集腹主动脉外周血4ml。使用淋巴细胞分离液结合密度梯度离心方法分离外周血单核细胞,体外培养至第3代。于显微镜下观察其形态和生长状态。取第3代MSC,鉴定其表型并向成骨、成脂和成软骨诱导分化.以证明其干细胞的特性。结果:经淋巴分离液结合密度梯度离心方法分离培养的外周血单核细胞.3~5天可见少量长梭形细胞贴壁,7-9天见细胞成簇生长,并形成克隆集落。第3代细胞形态较均一.生长增殖良好;表达典型的MSC标记CD44和CD90,不表达造血干细胞标记CD34和CD45。成骨诱导21天后,茜素红和ALP染色阳性,有矿化结节形成。成脂诱导21天后,油红0染色阳性.细胞内有脂滴形成。细胞微团无血清成软骨诱导21天后。甲苯胺蓝染色阳性,细胞外有蛋白多糖分泌:免疫组织化学染色示,特异性软骨基质II型胶原表达阳性。结论:采用联合药物动员方法能促进干细胞向外周血释放,分离培养的外周血干细胞经鉴定为MSC,体外具备三系分化潜能,有望成为运动创伤中新的细胞治疗和组织工程产品培育的种子细胞来源。 展开更多
关键词 外周血MSC 动员 多向分化潜能 sprague—dawley大鼠
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成年Sprague-Dawley大鼠的睡眠结构和呼吸暂停分析 被引量:15
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作者 王菁 王广发 凌亦凌 《中国病理生理杂志》 CAS CSCD 北大核心 2005年第3期621-624,共4页
目的 :了解成年Sprague -Dawley大鼠生理状态下的睡眠结构以及清醒 /睡眠状态下的呼吸暂停情况。方法 :对每只SD大鼠进行 6h的睡眠呼吸监测。大鼠的皮质脑电、颈部肌电以及通过微压传感器记录到的呼吸信号经过多导生理仪放大 ,以波形形... 目的 :了解成年Sprague -Dawley大鼠生理状态下的睡眠结构以及清醒 /睡眠状态下的呼吸暂停情况。方法 :对每只SD大鼠进行 6h的睡眠呼吸监测。大鼠的皮质脑电、颈部肌电以及通过微压传感器记录到的呼吸信号经过多导生理仪放大 ,以波形形式在计算机上同步显示并储存。使用人机交互的方法进行脑电分期和呼吸暂停的判断。SAS软件分析数据。结果 :2 6只成年雄性SD大鼠的非快动眼睡眠期 (NREM)和快动眼睡眠期 (REM)分别占总睡眠时间的 (83 3± 7 1) %和 (16 2± 7 1) %。全部监测大鼠在睡眠中出现呼吸暂停 ,平均睡眠呼吸暂停指数 (AI)为 (11 5± 4 6 )次 /h。其中REM期的呼吸暂停最频繁。且叹息后呼吸暂停主要发生于NREM期 ,而自发呼吸暂停主要发生于REM期。结论 :成年SD大鼠具有与人类相似的睡眠结构 ,睡眠中发生的中枢性呼吸暂停现象及其表现特点也与人类SAS患者相似 ,可以作为研究睡眠呼吸暂停中枢发病机制的天然动物模型。 展开更多
关键词 睡眠呼吸暂停 sprague—dawley大鼠 动物模型
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Sprague-Dawley大鼠胃肠道微生物区系的研究
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作者 王艺 陈仁金 +3 位作者 陈全刚 胡安康 韩旭峰 郑葵阳 《家畜生态学报》 北大核心 2023年第4期53-60,共8页
为了揭示Sprague-Dawley大鼠胃肠道微生物群落组成情况,探究大鼠胃肠道不同区域的菌群差异,该研究采用16S rRNA基因序列技术,对Sprague-Dawley大鼠的胃、十二指肠、空肠、回肠、盲肠、结肠和直肠的肠腔内容物进行基因组测序和微生物组... 为了揭示Sprague-Dawley大鼠胃肠道微生物群落组成情况,探究大鼠胃肠道不同区域的菌群差异,该研究采用16S rRNA基因序列技术,对Sprague-Dawley大鼠的胃、十二指肠、空肠、回肠、盲肠、结肠和直肠的肠腔内容物进行基因组测序和微生物组成分析。结果表明:Sprague-Dawley大鼠不同胃肠道区域的细菌群落组成不同;大肠样本的物种丰富度和多样性高于小肠样本;厚壁菌门是各肠道段的优势菌门,乳酸杆菌属是各肠道段的优势菌属;与小肠相比,大鼠大肠微生物菌群更稳定、多样。研究结果揭示了Sprague-Dawley大鼠的胃肠道微生物群落组成信息,为其作为动物模型的相关研究提供了理论依据。 展开更多
关键词 胃肠道微生物 基因组测序 乳酸杆菌 sprague-dawley大鼠
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基质细胞衍生因子-1/CXC族细胞因子受体4轴在缺氧预处理骨髓间充质干细胞移植促进Sprague-Dawley大鼠急性心肌梗死心脏功能恢复中的作用
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作者 盛瑾 夏宇 +5 位作者 石蓓 许官学 赵然尊 沈长银 王冬梅 刘志江 《上海医学》 CAS CSCD 北大核心 2015年第3期210-216,I0002,共8页
目的观察缺氧预处理的同种异体骨髓间充质干细胞(MSCs)移植入受体后,基质细胞衍生因子(SDF)-1/CXC族细胞因子受体(CXCR)4轴在促进Sprague-Dawley(SD)大鼠急性心肌梗死(AMI)心脏功能恢复中的作用。方法对SD大鼠的MSCs进行体外培养、鉴定... 目的观察缺氧预处理的同种异体骨髓间充质干细胞(MSCs)移植入受体后,基质细胞衍生因子(SDF)-1/CXC族细胞因子受体(CXCR)4轴在促进Sprague-Dawley(SD)大鼠急性心肌梗死(AMI)心脏功能恢复中的作用。方法对SD大鼠的MSCs进行体外培养、鉴定,并行缺氧预处理。128只SD大鼠被随机分入MSCs移植组(MSCs组)、缺氧预处理MSCs移植组(预处理MSCs组)、AMI组、假手术组,每组32只。MSCs组、预处理MSCs组和AMI组大鼠均予冠状动脉左前降支结扎造成AMI 10min后,预处理MSCs组大鼠在梗死区域、梗死区边缘局部共注射5×105/\mL经缺氧预处理的MSCs,MSCs组大鼠注射5×105/\mL MSCs,AMI组大鼠注射相同容量的0.9%氯化钠溶液。假手术组大鼠仅行开胸处理。造模前和造模后28d采用超声心动图测量左心室舒张末期内径(LVDd)、左心室收缩末期内径(LVDs)、左心室射血分数(LVEF)3项反映心脏功能的指标。分别于造模后1、7、14和28d每组各处死8只大鼠取其心脏组织行免疫组织化学、常规病理染色,计算心肌梗死面积百分比、梗死区心室壁厚度和心室肌内微血管密度(MVD)。采用实时定量PCR和免疫激光共聚焦定性、定量测定各组心肌组织内SDF-1和CXCR4的表达。结果造模后28d时超声心动图检测结果显示,预处理MSCs组、MSCs组、AMI组的LVDd和LVDs均显著长于假手术组(P值均<0.05),LVEF均显著低于假手术组(P值均<0.05);预处理MSCs组、MSCs组的LVDd和LVDs均显著短于AMI组(P值均<0.05),LVEF均显著高于AMI组(P值均<0.05);预处理MSCs组的LVDd和LVDs均显著短于MSCs组(P值均<0.05),LVEF均显著高于MSCs组(P<0.05)。造模后28d,预处理MSCs组、MSCs组的心肌梗死面积百分比均显著小于AMI组(P值均<0.05),预处理MSCs组显著小于MSCs组(P<0.05);预处理MSCs组、MSCs组左心室前壁厚度均显著厚于AMI组(P值均<0.05),预处理MSCs组显著厚于MSCs组(P<0.05)。造模后28d,预处理MSCs组、MSCs组、AMI组心肌梗死区的MVD定量和AMI组梗死边缘区的MVD定量均显著低于假手术组(P值均<0.05),预处理MSCs组、MSCs组梗死边缘区的MVD定量均显著高于假手术组(P值均<0.05),预处理MSCs组、MSCs组心肌梗死区和梗死边缘区的MVD定量均显著高于AMI组(P值均<0.05),预处理MSCs组心肌梗死区和梗死边缘区的MVD定量均显著高于MSCs组(P值均<0.05)。造模后1、7、14和28d,预处理MSCs组、MSCs组和AMI组的SDF-1和CXCR4蛋白荧光强度均显著高于假手术组(P值均<0.05),预处理MSCs组、MSCs组均显著高于AMI组(P值均<0.05),预处理MSCs组均显著高于MSCs组(P值均<0.05)。结论SD大鼠AMI区局部注射缺氧预处理的MSCs或MSCs后可使SDF-1和CRCR4在受损组织局部表达上调,同时心功能得到改善。SDF-1/CRCR4轴在心肌梗死区局部表达上调可能是缺氧预处理MSCs或MSCs移植后改善心脏功能的重要途径之一。 展开更多
关键词 骨髓间充质干细胞 基质细胞衍生因子-1 CXC族细胞因子受体4 缺氧预处理 心肌梗死 sprague—dawley大鼠
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Sprague-Dawley鼠局部脑缺血后脑电功率谱及电位分布图的研究 被引量:6
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作者 李敬诚 董为伟 傅雅谷 《重庆医科大学学报》 CAS CSCD 1992年第1期38-41,共4页
我们首次建立了大鼠多道脑电功率谱及电位分布图的分析方法,并应用于鼠实验性局部脑缺血的研究.实验结果表明缺血脑区δ%功率增高,α%功率降低.δ%功率能部份反映脑梗塞体积。
关键词 脑电位分布图 大鼠 脑缺血 脑电图
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Sprague-Dawley和Wistar两品系大鼠操作行为的比较研究
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作者 刘苹 M.Bornhausen H.Greim 《中国行为医学科学》 CSCD 1996年第4期175-178,共4页
目的探讨Sprague-Dawley和Wistar两品系大鼠的操作行为是否存在差异。方法对SD和Wistar两种近交系大鼠进行了操作行为测定。在十只电脑控制的操作行为测定箱中,采用正性强化物,分别进行了高频度差别强化... 目的探讨Sprague-Dawley和Wistar两品系大鼠的操作行为是否存在差异。方法对SD和Wistar两种近交系大鼠进行了操作行为测定。在十只电脑控制的操作行为测定箱中,采用正性强化物,分别进行了高频度差别强化率(DRH)和低频度差别强化率(DRL)两个不同程序六种组合(DRH2/1、DRH4/2、DRH8/4和DRL1/8、DRL1/16、DRL1/32)的测定。并对程序DRH8/4和DRL1/32分别进行了连续6个夜晚的获得性学习测定。结果Wistar鼠在较复杂的低频度差别强化率中的成绩比SD鼠好,其明暗分辨学习成绩亦高于SD鼠。在获得性学习中Wistar鼠在每个程序的第一个夜晚就取得较好成绩,并始终保持在较高水平。本研究还发现SD鼠的操作行为学习存在较大的个体差异。结论该两品系大鼠对操作行为的学习存在差异,Wistar大鼠比SD大鼠的学习能力强。本研究结果还表明操作行为测定能显示个体差异。 展开更多
关键词 操作行为 行为医学 大鼠 医用实验动物学
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Anti-hypercholesterolemic effect of kenaf(Hibiscus cannabinus L.)seed on high-fat diet Sprague dawley rats 被引量:2
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作者 Ng Shy Kai Tee Ai Nee +3 位作者 Elaine Lai Chia Ling Tan Chin Ping Long Kamariah Nyam Kar Lin 《Asian Pacific Journal of Tropical Medicine》 SCIE CAS 2015年第1期6-13,共8页
Objective:To determine? the anlihypercholesterolemic effects of kenaf seed samples and compare with the commercial hypocholesterolemic drug on serum lipids profiles and malondialdehyde(MDA) level in the rat.Methods:Ke... Objective:To determine? the anlihypercholesterolemic effects of kenaf seed samples and compare with the commercial hypocholesterolemic drug on serum lipids profiles and malondialdehyde(MDA) level in the rat.Methods:Kenaf seed oil(KSO),microencapsulated kenaf seed oil(MKSO),kenaf seed extract(KSE) and defatted kenaf seed meal(DKSM) were prepared and phytocHemicals screening on these samples were done prior in viro study.Phenolic compounds in KSF.were quantified using high performance liquid chromatography.There were 40(divided in eight diet groups of 5) male Sprague dawley rats adapted lo normal standard diet or hypercholesterolemic diet(HD) with or without the treatment of these kenaf samples for 32 days.Results:All the kenaf samples exhibited to contain most of the major phytocliemicals.KSE possessed gallic acid,tannic acid,catechin.benzaldehyde.benzoic acid,syringic acid,sinapic acid,ferulic acid,naringin acid,and protocatechuic acid.The significant higher(P<0.05) serum total cholesterol,low density lipoprotein cholesterol and MDA levels in HD group without treatment than the normal control group suggested the hypercholesterolemia was induced by the Incorporation of cholesterol into diet.KSE exhibited higher cholesterol-lowering properties due to the significant lower(P<0.05)in serum triglycerides,total cholesterol and MDA levels.KSF showed the highest efficiency of cholesterol-lowering activity,followed by KSO.MKSO and DKSM.Conclusions:DKSM.MKSO.KSO and KSE appeared lo have comparable anti-hypercholesterolemic effect with the commercial hypocholesterolemic drug.Hence,kenaf seed could be used as an alternative natural source lo replace the synthetic hypocholosterolemic drugs. 展开更多
关键词 HIBISCUS cannabinus HYPERCHOLESTEROLEMIA PHYTOCHEMICAL screening Phenolic compounds sprague dawley Oxidative stress
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Magnetic resonance imaging of hepatocellular carcinoma induced by diethylnitrosamine in Sprague-Dawley rats 被引量:3
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作者 Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China (Li X, Zhou XP and Guan YS) Department of Radiology, Ruijin Hospieal. Shanghai Second Medical University, Shanghai 200025 , China. Current address:Astra Zeneca R & D Alderley, Macclesfield SK 10 4 TG U. K. (Wang YX) 《Hepatobiliary & Pancreatic Diseases International》 SCIE CAS 2005年第3期427-432,共6页
Diethylnitrosamine (DENA) is able to induce various benign and malignant liver lesions in rats with a high success rate and a low mortality rate. It provides a more appropriate model that better simulates the various ... Diethylnitrosamine (DENA) is able to induce various benign and malignant liver lesions in rats with a high success rate and a low mortality rate. It provides a more appropriate model that better simulates the various lesions occurring in humans than the usual model of tumor implantations. The aim of the present study was to evaluate MRI liver examination in Sprague-Dawley(SD) rats as a routine method to detect hepatocellular carcinoma (HCC) nodules induced by DENA and to follow up their growth. METHODS:Hepatic carcinogenesis was induced in 80 male SD rats using oral DENA solution. All animals were imaged for liver tumor detection with a 1.5 Tesla magnet (Siemens Sonata,Erlangen, Germany) using correspondence scan parameters and a radio-frequency knee coil. Macroscopic examinations were performed along the axial MRI sections to evaluate magnetic resonance imaging (MRI) findings, and histopathological assessment was also performed. RESULTS:No false negative results were obtained on MR images. Hepatic tumors in 72 rats were confirmed macro-scopically and 68 rats were detected by MRI till the 20th week. The smallest and the largest nodules detected by MRI were 2 mm and 37 mm in diameter respectively. The agreement rate of MRI with macroscopic observation was 39. 1% and 97. 4% respectively for 2 mm to 5 mm and more than 5 mm nodules. CONCLUSIONS:The hepatic tumor induced by DENA provides a more representative range of tumors for imaging diagnosis and interventional treatment. MRI is the best approach for scrutinizing pathological changes of rat livers in the period of observation. 展开更多
关键词 ANIMAL-MODEL hepatocellular carcinoma sprague-dawley rat magnetic resonance imaging
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Analysis of transcriptome sequencing of sciatic nerves in Sprague-Dawley rats of different ages 被引量:2
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作者 Jiang-Hui Liu Qing Tang +5 位作者 Xiang-Xia Liu Jian Qi Rui-Xi Zeng Zhao-Wei Zhu Bo He Yang-Bin Xu 《Neural Regeneration Research》 SCIE CAS CSCD 2018年第12期2182-2190,共9页
An aging-induced decrease in Schwann cell viability can affect regeneration following peripheral nerve injury in mammals. It is therefore necessary to investigate possible age-related changes in gene expression that m... An aging-induced decrease in Schwann cell viability can affect regeneration following peripheral nerve injury in mammals. It is therefore necessary to investigate possible age-related changes in gene expression that may affect the biological function of peripheral nerves. Ten 1-week-old and ten 12-month-old healthy male Sprague-Dawley rats were divided into young(1 week old) and adult(12 months old) groups according to their ages. mRNA expression in the sciatic nerve was compared between young and adult rats using next-generation sequencing(NGS) and bioinformatics(n = 4/group). The 18 groups of differentially expressed mRNA(DEmRNAs) were also tested by quantitative reverse transcription polymerase chain reaction(n = 6/group). Results revealed that(1) compared with young rats, adult rats had 3608 groups of DEmRNAs. Of these, 2684 were groups of upregulated genes, and 924 were groups of downregulated genes. Their functions mainly involved cell viability, proliferation, differentiation, regeneration, and myelination.(2) The gene with the most obvious increase of all DEmRNAs in adult rats was Thrsp(log2 FC = 9.01, P 〈 0.05), and the gene with the most obvious reduction was Col2 a1(log2 FC = -8.89, P 〈 0.05).(3) Gene Ontology analysis showed that DEmRNAs were mainly concentrated in oligosaccharide binding, nucleotide-binding oligomerization domain containing one signaling pathway, and peptide-transporting ATPase activity.(4) Analysis using the Kyoto Encyclopedia of Genes and Genomes showed that, with increased age, DEmRNAs were mainly enriched in steroid biosynthesis, Staphylococcus aureus infection, and graft-versus-host disease.(5) Spearman's correlation coefficient method for evaluating NGS accuracy showed that the NGS results and quantitative reverse transcription polymerase chain reaction results were positively correlated(rs = 0.74, P 〈 0.05). These findings confirm a difference in sciatic nerve gene expression between adult and young rats, suggesting that, in peripheral nerves, cells and the microenvironment change with age, thus influencing the function and repair of peripheral nerves. 展开更多
关键词 peripheral nerve injury AGING sprague-dawley rat TRANSCRIPTOME SEQUENCING MRNA rat age Schwann cells neural regeneration
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一种改良的Sprague Dawley新生大鼠视网膜Müller细胞培养方法 被引量:1
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作者 杨梅 范围 +1 位作者 黄瑶 袁容娣 《新乡医学院学报》 CAS 2019年第9期815-818,共4页
目的改良SpragueDawley(SD)新生大鼠视网膜Müller细胞培养方法。方法取新生1~2d的SD,分2d完成视网膜Müller细胞的提取,第1天将眼球浸泡于含体积分数1%双抗的无血清高糖达尔伯克改良伊戈尔培养基(DMEM)中,置于37℃、含体积分数... 目的改良SpragueDawley(SD)新生大鼠视网膜Müller细胞培养方法。方法取新生1~2d的SD,分2d完成视网膜Müller细胞的提取,第1天将眼球浸泡于含体积分数1%双抗的无血清高糖达尔伯克改良伊戈尔培养基(DMEM)中,置于37℃、含体积分数5%CO2的培养箱内过夜;第2天,去培养基,以2.5g·L^-1胰蛋白酶消化眼球1h,分离视网膜组织,加入含体积分数1%双抗和体积分数10%胎牛血清的高糖DMEM培养基,制备细胞悬液接种培养;24h后换液,6~8d后传代,传至第4代,细胞免疫荧光染色法鉴定Müller细胞纯度。结果Müller细胞贴壁生长良好,细胞体宽大,细胞质丰富,细胞核呈圆形或椭圆形,无神经元共生长,Müller细胞纯度>95%。结论改良的SD新生大鼠视网膜Müller细胞培养方法操作简单,细胞纯度高。 展开更多
关键词 细胞培养 spraguedawley大鼠 视网膜 MÜLLER细胞
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Sprague-Dawley大鼠自发性乳腺癌分子分型的动物实验研究
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作者 郭缙 戴顺东 《中国卫生标准管理》 2017年第2期147-148,共2页
目的探讨Sprague-Dawley(SD)大鼠患有自发性乳腺癌的分子分型情况。方法选取20只无特定病原体级雌性4周SD大鼠。通过分析全部大鼠乳腺癌分子分型,找到自发性乳腺肿瘤相关分子分型特点。结果 Luminal A型(55.00%)乳腺癌大鼠显著高于Basal... 目的探讨Sprague-Dawley(SD)大鼠患有自发性乳腺癌的分子分型情况。方法选取20只无特定病原体级雌性4周SD大鼠。通过分析全部大鼠乳腺癌分子分型,找到自发性乳腺肿瘤相关分子分型特点。结果 Luminal A型(55.00%)乳腺癌大鼠显著高于Basal-like型、Luminal B型和Her-2过表达型(P均<0.05),其余三组差异无统计学意义(P均>0.05)。结论临床上除常规生化指标及影像学诊断以外,配合ER、Cerb B-2及PR检测对早期鉴别大鼠乳腺癌有积极意义。 展开更多
关键词 sprague-dawley大鼠 自发性乳腺癌 分子分型
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Morphological characteristics of the lumbosacral spinal cord urogenital center in Sprague Dawley rats
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作者 Mouwang Zhou Wenting Wang Qingshan Chen 《Neural Regeneration Research》 SCIE CAS CSCD 2009年第12期1099-1103,共5页
BACKGROUND: Studies have demonstrated that selective innervation of the sacral nerve tract to the bladder plays an important role in bladder functional reconstruction following spinal cord injury. However, there are ... BACKGROUND: Studies have demonstrated that selective innervation of the sacral nerve tract to the bladder plays an important role in bladder functional reconstruction following spinal cord injury. However, there are very few studies reporting detailed morphological characteristics of urogenital center and lumbosacral nerve roots. OBJECTIVE: To analyze the spinal cord segment of the lumbosacral spinal cord urogenital center, and to observe morphological characteristics. DESIGN, TIME AND SETTING: A neuroanatomical study was performed at the Laboratory of Neuroanatomy, Peking University Health Science Center between September 2007 and March 2008. MATERIALS: Horseradish peroxidase-conjugated cholera toxin B subunit (CB-HRP) was purchased from Sigma, USA; surgical microscope was purchased from Zhenjian Zhongtian Optical Instrument, Jiangsu Province, China; BCL-420 biological and functional experimental system was purchased from Taimeng Science and Technology, Sichuan Province, China. METHODS: A total of 36 adult, Sprague Dawley rats were randomly assigned to groups A (n = 10), B (n = 10), C (n = 10), and D (n = 6). CB-HRP (3%, 10-15 μL) was injected into the bladder detrusor muscle (group A), external urethral sphincter (group B), and perineal muscles (group C), respectively. Rats in group D were not given any treatments. MAIN OUTCOME MEASURES: At 72 hours after CB-HRP injection, CB-HRP-positive neurons were analyzed in lumbosacral segments using 3, 3', 5, 5'-tetramethylbenzidine staining and an Olympus optic microscope, while anatomical structures in the respective spinal nerve tract were observed using a surgical microscope. RESULTS: CB-HRP-positive neurons were distributed in the L6-S1 segments of the spinal cord, and neurons primarily innervating the bladder detrusor muscle were located at the sacral parasympathetic nucleus and the intermediolateral nucleus. In addition, neurons that primarily innervate the external urethral sphincter and perineal muscles were observed in the ventrolateral portion (Onuf's nucleus). The lumbar-sacral nerve roots were composed of varying nerve tracts, Le., they were typically divided into 1-2 sub-bundles, and the sub-bundles were then divided into 2-3 tiny bundles. There were extensive fibro-connections between the rootlets. CONCLUSION: The urogenital center in Sprague Dawley rats was located in the L6 -S1 segments of the spinal cord, and the rootlets were clearly observed. Therefore, this rat experimental model could be utilized for highly selective anterior/posterior rhizotomy. 展开更多
关键词 urogenital center MORPHOLOGY microsurgical anatomy sprague dawley rats
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Analysis of Behaviour Pattern in Sprague-Dawley Rats Using Microwave Techniques
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作者 Anil Lonappan Ernest Remy Hervé Ebell’a Dallé +1 位作者 Thomas Joachim Odhiambo Afullo Williams Mark Uren Daniels 《Journal of Electromagnetic Analysis and Applications》 2017年第11期155-166,共12页
This communication presents a new method of detecting the behaviour pattern in Sprague-Dawley (SD) rats based on the measurement of the dielectric properties of blood plasma at microwave frequencies at different perio... This communication presents a new method of detecting the behaviour pattern in Sprague-Dawley (SD) rats based on the measurement of the dielectric properties of blood plasma at microwave frequencies at different periods of time. The microwave measurements were performed by rectangular cavity perturbation method in the S-band of microwave frequency with the blood plasma collected from normal rats (Controls) as well as chemically induced rats (A&beta;). A change is observed in the dielectric properties of the A&beta;samples but not the controls samples at the extended period of time. This measurement technique is simple and the collection of blood from the rats is nonsurgical in nature. These results prove a new method of diagnosing Alzheimer’s Disease (AD) using microwave techniques. 展开更多
关键词 BLOOD Plasma sprague-dawley Rats CAVITY PERTURBATION Alzheimer’s Disease
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Reference values for selected hematological, biochemical and physiological parameters of Sprague‐Dawley rats at the Animal House, Faculty of Medicine, University of Colombo,Sri Lanka
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作者 Shehani L.Delwatta Mangala Gunatilake +5 位作者 Vera Baumans Melanie D.Seneviratne Manjula L.B.Dissanayaka Siyani S.Batagoda Asanga H.Udagedara Prasad B.Walpola 《Animal Models and Experimental Medicine》 2018年第4期250-254,共5页
Background: Lack of available reference values in a research setting under local conditions can be a drawback for beginners, as the accuracy of data from control samples cannot be checked at the beginning of a researc... Background: Lack of available reference values in a research setting under local conditions can be a drawback for beginners, as the accuracy of data from control samples cannot be checked at the beginning of a research project. This affects comparisons with data from test samples. To avoid these complications in their research projects,beginners tend to have a greater number of animals in the control group compared to test groups in order to have control group measurements within 2 SDs of the mean.Methods: As non-availability of reference values was a long-felt need, the described project was conducted in order to establish a reference database for selected haematological, biochemical and physiological parameters using apparently healthy Sprague-Dawley rats bred in the Animal House of Faculty of Medicine, University of Colombo(UCFM).Results: Differences in mean values of packed cell volume(PCV), mean corpuscular volume(MCV) and mean corpuscular hemoglobin concentration(MCHC), serum creatinine and blood glucose levels between the two genders were statistically significant. Lipid profile measurements did not differ significantly between genders, but mean and median values of triglycerides(TG) between male and female rats showed a difference of more than 10 mg/dL. The liver enzymes alkaline phosphatase(AP)and aspartate aminotransferase(AST) were also statistically significantly different between sexes. Despite wide variation in mean alanine aminotransferase(ALT)between sexes, the difference was not statistically significant.Conclusion: The findings of this project should support to a certain extent the"Reduction" aspect of the 3 Rs concept of Russell and Burch by reducing the number of Sprague-Dawley rats used in future research projects at UCFM. 展开更多
关键词 3Rs concept rat reference VALUES sprague-dawley
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STUDIES ON DITERPENE-QUINONES OF TRIPTERYGIUM REGELII SPRAGUE
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《Chinese Chemical Letters》 SCIE CAS CSCD 1992年第2期113-116,共4页
Six new diterpene-quinones were isolated from the ethanol extract of the roots of Tripterygium regelii Sprague and their structures were elucidated through interpretation of their spectroscopic data and chemical corre... Six new diterpene-quinones were isolated from the ethanol extract of the roots of Tripterygium regelii Sprague and their structures were elucidated through interpretation of their spectroscopic data and chemical correlations. The absolute configuration of triptoquinonoic acid A (1) was determined by X-ray crystallography. 展开更多
关键词 CHC PPM STUDIES ON DITERPENE-QUINONES OF TRIPTERYGIUM REGELII sprague
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CCl4诱导的肝纤维化大鼠模型肝小叶内卵圆细胞总体积与轮廓数密度变化的体视学分析
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作者 王川林 刘全明 +3 位作者 杨霞 杨正伟 梅小平 彭彬 《临床肝胆病杂志》 CAS 北大核心 2024年第1期70-75,共6页
目的 定量研究CCl4诱导的肝纤维化大鼠肝小叶内卵圆细胞(HOC)总体积和轮廓数密度的变化。方法 将11只雄性健康SD大鼠随机分为对照组(n=5)、肝纤维化组(n=6),每周2次皮下注射CCl4与橄榄油混悬液,每次3 mL/kg。在肝纤维化造模5周后取材,... 目的 定量研究CCl4诱导的肝纤维化大鼠肝小叶内卵圆细胞(HOC)总体积和轮廓数密度的变化。方法 将11只雄性健康SD大鼠随机分为对照组(n=5)、肝纤维化组(n=6),每周2次皮下注射CCl4与橄榄油混悬液,每次3 mL/kg。在肝纤维化造模5周后取材,从每只大鼠肝脏随机抽选5个大小约1 mm3的肝组织块分别制作1张Epon812环氧树脂包埋超薄切片,运用体视学方法结合透射电子显微镜技术,对大鼠肝小叶内的HOC总体积和轮廓数密度进行定量研究,另从每只大鼠剩余肝脏等距随机抽选4个2 mm厚的肝组织块并分别制作2张石蜡包埋的Masson染色切片,按照肝纤维化Metavir分期标准定性评估每只大鼠的肝纤维化程度。计量资料两组间比较采用成组t检验。结果 体视学定量研究显示,对照组肝小叶内HOC总体积为(15.40±7.63) mm3,肝纤维化组肝小叶内HOC总体积为(146.80±114.00) mm3,与对照组比较,肝纤维化组大鼠肝小叶内HOC总体积显著增加了8.53倍(t=-2.551,P=0.031);对照组肝小叶内HOC轮廓数密度为(56.20±40.40),肝纤维化组肝小叶内HOC轮廓数密度为(566.50±317.00),与对照组比较,肝纤维化组大鼠肝小叶内轮廓数密度显著增加了9.08倍(t=-3.539,P=0.006);定性观察研究结果显示,肝纤维化大鼠肝纤维化分期按照Metavir评分标准达到Ⅱ~Ⅲ期,大鼠窦周隙内肝星状细胞增生部位周围伴随着HOC的大量增生。结论 CCl4诱导肝纤维化大鼠肝小叶内HOC显著增生。 展开更多
关键词 肝纤维化 大鼠 sprague-dawley 肝卵圆细胞 肝星状细胞
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蒲公英提取物对脑出血大鼠的治疗作用及机制研究
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作者 张秀峰 李小菲 +5 位作者 王静辉 王慧静 王立雯 甄诚 王鹏飞 刘熙鹏 《中华老年心脑血管病杂志》 CAS 北大核心 2024年第2期212-216,共5页
目的研究蒲公英提取物对自发性脑出血(ICH)大鼠的治疗作用及核因子E2相关因子2(Nrf2)/血红素加氧酶1(HO-1)信号通路的影响。方法通过脑定位注射Ⅳ型胶原酶诱导建立48只ICH大鼠模型,随机分为模型组、蒲公英提取物组、Nrf2抑制剂(ML385)... 目的研究蒲公英提取物对自发性脑出血(ICH)大鼠的治疗作用及核因子E2相关因子2(Nrf2)/血红素加氧酶1(HO-1)信号通路的影响。方法通过脑定位注射Ⅳ型胶原酶诱导建立48只ICH大鼠模型,随机分为模型组、蒲公英提取物组、Nrf2抑制剂(ML385)组和蒲公英提取物+ML385组,每组12只,另选12只大鼠作为假手术组。以药物分组处理后,进行大鼠神经功能损伤评分;检测大鼠血脑屏障功能、海马神经元细胞凋亡率、血清环氧化酶2(COX-2)、白细胞介素6(IL-6)、诱导型一氧化氮合酶(iNOS)及脑组织过氧化氢酶(CAT)、谷胱甘肽过氧化物酶(GSH-Px)、活性氧、丙二醛水平和Nrf2/HO-1信号通路蛋白表达。结果与假手术组比较,模型组大鼠神经功能缺损评分、伊文思蓝渗出量、海马神经元细胞凋亡率、血清COX-2、IL-6、iNOS水平、脑组织活性氧、丙二醛水平显著升高(P<0.05),CAT、GSH-Px、Nrf2、HO-1蛋白表达水平显著降低(P<0.05)。与蒲公英提取物组比较,蒲公英提取物+ML385组大鼠神经功能评分[(2.54±0.23)分vs(1.43±0.19)分]、伊文思蓝渗出量[(22.15±3.61)ng/mg vs(6.54±1.24)ng/mg]、海马神经元细胞凋亡率[(31.97±5.26)%vs(3.51±0.94)%]、血清COX-2[(5.82±1.16)ng/ml vs(1.34±0.42)ng/ml]、IL-6[(1.47±0.31)ng/ml vs(0.43±0.14)ng/ml]、iNOS[(59.91±10.36)U/ml vs(13.94±3.78)U/ml]、脑组织活性氧[(4.70±0.45)U/kg vs(1.70±0.51)U/kg]、丙二醛水平[(3.72±0.52)nmol/mg vs(1.17±0.34)nmol/mg]显著升高(P<0.05),CAT[(2.54±0.59)U/mg vs(5.68±1.04)U/mg]、GSH-Px[(8.01±0.86)U/mg vs(16.97±3.03)U/mg]、Nrf2(0.67±0.13 vs 1.07±0.19)、HO-1(0.55±0.07 vs 0.86±0.10)蛋白表达水平显著降低(P<0.05)。结论蒲公英提取物可通过激活Nrf2/HO-1信号通路增强ICH大鼠抗氧化活性,阻止炎症和氧化应激反应进展,抑制海马神经元细胞凋亡,修复血脑屏障功能,改善大鼠神经功能。 展开更多
关键词 脑出血 大鼠 sprague-dawley 蒲公英属 蒲公英提取物
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苦参碱对缺血性脑卒中大鼠神经炎症的影响
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作者 孙海东 邓敏 +1 位作者 苏霞 潘微 《中华老年心脑血管病杂志》 CAS 北大核心 2024年第4期455-459,共5页
目的探究苦参碱调节高迁移率族蛋白B1(HMGB1)-晚期糖基化终末产物受体(RAGE)信号通路对缺血性脑卒中(IS)大鼠神经炎症的影响。方法将75只SD大鼠随机分为模型组、苦参碱低剂量组(10 mg/kg)、苦参碱高剂量组(20 mg/kg)、苦参碱高剂量+晚... 目的探究苦参碱调节高迁移率族蛋白B1(HMGB1)-晚期糖基化终末产物受体(RAGE)信号通路对缺血性脑卒中(IS)大鼠神经炎症的影响。方法将75只SD大鼠随机分为模型组、苦参碱低剂量组(10 mg/kg)、苦参碱高剂量组(20 mg/kg)、苦参碱高剂量+晚期糖基化终末产物(AGE)血清蛋白组(20 mg/kg苦参碱+100 mg/kg AGE血清蛋白)和假手术组,每组15只。采用线栓法构建大鼠大脑中动脉闭塞模型。用Longa评分评估大鼠神经功能缺损;氯化三苯四氮唑染色检测脑梗死情况;苏木精-伊红染色观察海马组织病理变化;酶联免疫吸附测定海马组织白细胞介素(IL)1β、IL-6、肿瘤坏死因子α(TNF-α)水平。Western blot检测海马组织HMGB1、RAGE蛋白表达。结果苦参碱高剂量组Longa评分、脑梗死面积、IL-1β、IL-6、TNF-α、HMGB1和RAGE蛋白表达明显低于模型组和苦参碱低剂量组(P<0.05)。苦参碱高剂量+AGE血清蛋白组Longa评分、脑梗死面积、IL-1β、IL-6、TNF-α、RAGE蛋白表达明显高于苦参碱高剂量组[(2.93±0.30)分vs(1.10±0.12)分,(38.18±4.04)%vs(15.52±1.74)%,(78.57±8.33)pg/ml vs(39.27±4.76)pg/ml,(203.14±24.39)pg/ml vs(92.45±11.23)pg/ml,(243.53±26.81)pg/ml vs(150.49±18.79)pg/ml,0.73±0.07 vs 0.44±0.04,P<0.05]。结论苦参碱可能通过抑制HMGB1-RAGE信号通路减轻IS大鼠的神经炎症。 展开更多
关键词 苦参碱 卒中 大鼠 sprague-dawley 模型 动物 神经炎 HMGB1-RAGE信号通路
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探究电针廉泉穴对脑卒中后吞咽困难大鼠神经功能缺损的影响
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作者 金海涛 张雯 王非 《中华老年心脑血管病杂志》 CAS 北大核心 2024年第1期87-91,共5页
目的探讨电针廉泉穴对脑卒中后吞咽困难(PSD)大鼠神经功能缺损的影响及潜在对瞬时受体电位香草酸亚型1(TRPV1)信号通路的调节机制作用。方法选用SPF级SD雄性大鼠60只,随机分为正常组12只(仅浅插栓线,未导致脑内动脉闭塞),余48只制作PSD... 目的探讨电针廉泉穴对脑卒中后吞咽困难(PSD)大鼠神经功能缺损的影响及潜在对瞬时受体电位香草酸亚型1(TRPV1)信号通路的调节机制作用。方法选用SPF级SD雄性大鼠60只,随机分为正常组12只(仅浅插栓线,未导致脑内动脉闭塞),余48只制作PSD模型,将造模成功的36只大鼠随机分为模型组、治疗组和治疗+咖啡酸组,每组12只。记录大鼠吞咽潜伏期和吞咽次数,生物信号采集器检测舌下神经放电、舌肌阈强度和收缩幅度,酶联免疫吸附测定血清P物质含量,甲苯胺蓝染色检测舌下神经核尼氏体数目,免疫组织化学检测舌下神经核TRPV1、五羟色胺(5-HT)、磷酸化p38、神经元型一氧化氮合酶(nNOS)蛋白表达水平。结果与正常组比较,模型组大鼠吞咽潜伏期、吞咽次数、舌下神经放电积分面积、舌肌收缩幅度、血清P物质含量、舌下神经核尼氏体数目、TRPV1及5-HT蛋白表达水平下降,舌肌阈强度和舌下神经核磷酸化p38、nNOS蛋白表达水平增加(P<0.05);与模型组比较,治疗组大鼠舌肌单收缩幅度、舌肌强直收缩幅度、血清P物质含量、舌下神经核尼氏体数目、TRPV1及5-HT蛋白表达水平增加[2.36±0.26 vs 1.77±0.22、3.46±0.36 vs 2.15±0.18、(3.92±0.38)ng/ml vs(1.69±0.17)ng/ml、(33.60±3.65)个vs(24.60±2.34)个、(19.85±2.11)%vs(9.79±1.07)%、(22.43±2.34)%vs(10.85±1.13)%,P<0.05]。结论电针廉泉穴可能通过激活TRPV1信号通路改善PSD大鼠神经功能缺损。 展开更多
关键词 卒中 大鼠 sprague-dawley 模型 动物 吞咽障碍 廉泉 电针 香草酸亚型1信号通路
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萝卜硫素调节腺苷酸活化蛋白激酶/沉默信息调节器1/过氧化物酶体增殖活化受体γ辅助活化因子1α信号通路对妊娠高血压大鼠妊娠结局的影响
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作者 马合红 侯秀真 +1 位作者 冯妙肖 张俊峰 《安徽医药》 CAS 2024年第4期666-672,I0001,共8页
目的 探究萝卜硫素(SFN)通过调节腺苷酸活化蛋白激酶(AMPK)/沉默信息调节器1(SIRT1)/过氧化物酶体增殖活化受体γ辅助活化因子1α(PGC-1α)信号通路对妊娠期高血压疾病(HDP)大鼠妊娠结局的影响。方法 2021年3月至2022年6月,70只雌性大... 目的 探究萝卜硫素(SFN)通过调节腺苷酸活化蛋白激酶(AMPK)/沉默信息调节器1(SIRT1)/过氧化物酶体增殖活化受体γ辅助活化因子1α(PGC-1α)信号通路对妊娠期高血压疾病(HDP)大鼠妊娠结局的影响。方法 2021年3月至2022年6月,70只雌性大鼠受孕后分为对照组、HDP组、SFN-L组(SFN 5 mg/kg)、SFN-M(SFN 15 mg/kg)、SFN-H(SFN 30 mg/kg)、硫酸镁组(硫酸镁注射液100 mg/kg)、Compound C组(SFN 30 mg/kg+AMPK抑制剂Compound C 0.25 mg/kg),各组10只。在妊娠第13天起除对照组,其余各组妊娠大鼠尾静脉注射7 mg/kg L-NAME,连续注射4 d,建立HDP大鼠模型,对照组大鼠尾静脉注射0.9%氯化钠溶液。从造模成功后第1天(妊娠第17天)起,各给药组注射相应剂量的药物,对照组、HDP组注射0.9%氯化钠溶液,连续给药至妊娠第20天。检测妊娠第17天和第20天各组大鼠尾动脉压和24 h尿蛋白定量水平;试剂盒法检测大鼠血肌酐(SCr)和血尿素氮(BUN)水平;观察检测大鼠妊娠结局指标;HE染色观察胎盘组织和肾脏组织病理情况;蛋白质印迹法检测胎盘组织可溶性血管内皮生长因子受体-1(sFLT-1)、胎盘生长因子(PLGF)、内皮型一氧化氮合酶(eNOs)、磷酸化eNOs(peNOs)、磷酸化AMPK(p-AMPK)、AMPK、SIRT1、PGC-1ɑ蛋白水平。结果 HDP组大鼠血压[(152.52±4.79)mmHg比(101.63±4.15)mmHg]、24 h尿蛋白定量水平[(679.38±64.32)mg/L比(123.17±20.19)mg/L]、胎鼠病死率[(28.57±2.08)%比(0.96±0.11)%]、血清SCr和BUN水平、胎盘组织sFLT-1表达水平高于对照组(P<0.05),而胎鼠质量[(2.32±0.19)g比(4.75±0.43)g]、产仔数[(11.70±0.69)个比(7.10±0.57)个]、胎盘质量[(0.32±0.06)g比(0.58±0.12)g]、胎盘组织PLGF、p-eNOs、p-AMPK、SIRT1和PGC-1ɑ蛋白表达低于对照组(P<0.05),另外,HDP大鼠胎盘组织绒毛数量减少,胎盘结构缩小,部分绒毛显示纤维蛋白样坏死,肾脏组织内肾小球数目减少,结构异常;SFN-L组、SFN-M组、SFN-H组和硫酸镁组大鼠血压[(136.91±5.16)mmHg、(129.25±4.54)mmHg、(117.33±4.19)mmHg、(121.72±4.61)mmHg比(152.52±4.79)mmHg]、24 h尿蛋白定量水平[(595.91±53.05)mg/L、(532.23±49.76)mg/L、(461.16±35.15)mg/L、(482.74±39.58)mg/L比(679.38±64.32)mg/L]、胎鼠病死率、血清SCr和BUN水平、胎盘组织sFLT-1表达水平低于HDP组(P<0.05),胎鼠质量、产仔数、胎盘质量、胎盘组织PLGF、p-eNOs、p-AMPK、SIRT1和PGC-1ɑ蛋白表达高于HDP组(P<0.05),胎盘组织和肾脏组织结构异常程度减轻;AMPK抑制剂Compound C减弱了SFN对HDP大鼠血压、肾损伤和妊娠结局的保护作用。结论 SFN通过激活AMPK/SIRT1/PGC-1ɑ信号通路改善HDP大鼠妊娠结局。 展开更多
关键词 高血压 妊娠性 萝卜硫素 AMPK/SIRT1/PGC-1ɑ信号通路 大鼠 sprague-dawley 妊娠结局
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