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1.
目的 在转染pEGFP-DJ-1和pEGFP-DJ-1L166P质粒的NIH3T3细胞中进行tau基因表达与DJ-1基因相关性的研究,为进一步建立DJ-1和DJ-1L166P转基因小鼠模型及在动物整体水平研究DJ-1基因功能和帕金森病发病机制提供实验基础.方法 采用RT-PCR的方法从人神经母细胞瘤细胞(SH-SY5Y)总RNA反转录获得DJ-1cDNA片段,采用突变试剂盒将第166位氨基酸突变,分别构建pEGFP-DJ-1和pEGFP-DJ-1L166P重组表达载体,采用脂质体转染的方法分别将pEGFPDJ-1、DEGFP-DJ-1L166P、pEGFP-C3质粒转染NIH3T3细胞并用G418压力筛选稳定克隆,对获得的三种转染细胞在转录水平和蛋白质水平进行tau基因表达的检测.结果 pEGFP-DJ-1、pEGFPDJ-1L166P、pEGFP-C3质粒转染NIH3T3细胞G418筛选后,分别获得6、2、9个阳性细胞克隆,RTPCR及westem blot 方法进行tau基因表述检测,结果均显示pEGFP-DJ-1质粒转染组tau表达低于pEGFP-C3质粒转染组,而pEGFP-DJ-1L166P质粒转染组tau表达则高于pEGFP-C3质粒转染组,实验结果统计学分析均具有明显差异(P<0.05).结论 在转录水平及蛋白质水平,DJ-1基因使tau基因的表达下降,而DJ-1L166P使tau基因表达上升.在NIH3T3细胞中tau基因表达与DJ-1基因具有一定的相关性.  相似文献   

2.
目的 在细胞学水平比较DJ、DJ-1M261、DJ-1L166P基因对NIH 3T3细胞增殖速率与凋亡的关系,为建立转基因动物模型及帕金森疾病发病机制研究奠定基础.方法 分别将pcDNA3.1/myc-His-DJ-1、pcDNA3.1/myc-His-DJ-1L166P和pcDNA3.1/myc-His-DJ-1M261重组质粒脂质体方法转染NIH 3T3细胞,500 μg/ml G418压力筛选稳定克隆,对3种转染细胞在DNA水平、RNA水平和蛋白质水平进行鉴定,采用MTT染色方法和Annexin V-FITC试剂盒进行转染阳性克隆细胞的细胞活力与细胞凋亡检测.结果 pcDNA3.1/myc-His-DJ-1、pcDNA3.1/myc-His-DJ-1L166P和pcDNA3.1/myc-His-DJ-1M261重组质粒转染NIH 3T3细胞经G418筛选后,PCR方法检测分别获得1个、4个、3个阳性细胞克隆,RT-PCR及Western blot方法进行DJ-1-His基因表达检测,结果均证明外源插入基因的表达,Caspase-3 RNA水平检测DJ-1L166P和DJ-1M261组表达高于正常NIH 3T3细胞组,而DJ-1组caspase-3转录水平相对最低,MTT实验结果初步证明转染DJ-1L166P和DJ-1M261基因的NIH3T3阳性细胞组细胞增殖速率均低于DJ-1组和正常NIH 3T3细胞组(P<0.05),转染DJ-1基因的NIH 3T3阳性细胞增殖速率与正常NIH 3T3细胞相比无明显差别;细胞凋亡检测表明转染DJ-1L166P和D J-1M261基因的NIH3T3阳性细胞凋亡率均高于正常NIH 3T3细胞,转染DJ-1基因的NIH 3T3阳性细胞凋亡率低于正常NIH 3T3细胞(P<0.05).结论 DJ-1L166P和DJ-1M261基因突变均降低NIH3T3细胞增殖速率,DJ-1L166P和DJ-1M261基因突变更易导致NIH 3T3细胞的凋亡,DJ-1L166P和DJ-1M261基因突变对NIH3T3细胞增殖速率和细胞凋亡影响是相似的.  相似文献   

3.
目的 建立TNNT3(R69H)突变转基因小鼠模型.方法 构建pEGFP-TNNT3(R69H)转基因构件,通过原核显微注射方法将线性化、纯化后的外源质粒pEGFP-TNNT3(R69H)注射入BDF1小鼠受精卵中,胚胎移植至同期发情的假孕受体母鼠输卵管内,获得子代小鼠.用PCR和Southern blot方法检测子代鼠尾基因组DNA,通过RT-PCR及Western blot的方法检测TNNT3基因表达.结果 8只假孕小鼠共移植注射后的胚胎82枚,出生40只子代鼠,经PCR和Southern方法检测得到5只转基因阳性小鼠.对其子代小鼠进行RT-PCR、Western blot检测结果显示,TNNT3在转基因小鼠心脏和骨骼肌中表达量明显增多.结论 通过显微注射法使外源基因pEGFP-TNNT3(R69H)在小鼠基因组中整合,成功建立了TNNT3(R69H)突变转基因小鼠模型.  相似文献   

4.
目的在转染pEGFP-DJ-1和pEGFP-DJ-1^L166P质粒的NIH3T3细胞中进行tau基因表达与DJ-1基因相关性的研究,为进一步建立DJ-1和DJ-1^L166P转基因小鼠模型及在动物整体水平研究DJ-1基因功能和帕金森病发病机制提供实验基础。方法采用RT-PCR的方法从人神经母细胞瘤细胞(SH-SY5Y)总RNA反转录获得DJ-1cDNA片段,采用突变试剂盒将第166位氨基酸突变,分别构建pEGFP-DJ-1和pEGFP-DJ-1^L166P重组表达载体,采用脂质体转染的方法分别将pEGFP-DJ-1、pEGFP-DJ-1^L166P、pEGFP-C3质粒转染NIH3T3细胞并用G418压力筛选稳定克隆,对获得的三种转染细胞在转录水平和蛋白质水平进行tau基因表达的检测。结果pEGFP—DJ-1、pEGFP-DJ-1^L166P、pEGFP—C3质粒转染NIH3T3细胞G418筛选后,分别获得6、2、9个阳性细胞克隆,RT—PCR及western blot方法进行tau基因表达检测,结果均显示pEGFP—DJ-1质粒转染组tau表达低于pEGFP—C3质粒转染组,而pEGFP—DJ-1^L166P质粒转染组tau表达则高于pEGFP—C3质粒转染组,实验结果统计学分析均具有明显差异(P〈0.05)。结论在转录水平及蛋白质水平,DJ-1基因使tau基因的表达下降,而DJ-1^L166P使tau基因表达上升。在NIH3T3细胞中tau基因表达与DJ-1基因具有一定的相关性。  相似文献   

5.
目的 建立系统性高表达含198位点多态性的胞质型谷胱甘肽过氧化物酶(cellular glutathione peroxidase-1,GPx-1)转基因小鼠(GPx-1P198L),为研究GPx-1P198L在氧化应激相关疾病中的作用提供动物模型.方法 利用显微注射法将限制性内切酶BamH Ⅰ和AccⅠ线性化的GPx-1(198Leu)转基因载体注射到C57BL/6J小鼠受精卵中,建立GPx-1P198L转基因小鼠.PCR鉴定实验后小鼠的基因型,Western blot检测GPx-1蛋白表达.结果 建立了GPx-1p198L首建鼠13只,筛选后9只原代转基因小鼠能产生子代,其中4只原代转基因小鼠产生的子代(F1代)心脏组织高表达GPx-1蛋白,4只小鼠成功建系.结论 建立了系统性表达突变型人GPx-1 (198Leu)的转基因小鼠,为研究GPx-1(198Leu)在氧化应激相关疾病中的作用提供了动物模型.  相似文献   

6.
目的 观察姜黄素对阿尔茨海默病模型APP/PS1双转基因小鼠胰岛素受体底物-1(IRS-1)和磷酸化胰岛素受体底物-1(p-IRS-1)表达的影响,探讨姜黄素神经保护作用机制.方法 将3月龄的APP/PS1双转基因小鼠随机分为模型组、罗格列酮组、姜黄素高(400 mg/kg)、中(200 mg/kg)、低(100 mg/kg)剂量组,并以同窝阴性小鼠作为正常对照组.连续灌胃6个月后,应用免疫组织化学、Western blot和RT-PCR法进行检测.结果 免疫组化染色,模型组小鼠大脑海马CA1区IRS-1阳性细胞较正常组明显增加(P<0.01),与模型组相比,各干预组IRS-1阳性细胞数减少(P<0.05或P<0.01),p-IRS-1结果与IRS-1结果相反.Western blot检测海马IRS-1和p-IRS-1的蛋白表达结果与免疫组化检测结果一致.RT-PCR检测IRS-1 mRNA表达结果与免疫组化和Westernblot结果一致.结论 姜黄素可以使APP/PS1双转基因小鼠海马增加的IRS-1和减少的p-IRS-1得以恢复,并调节IRS-1 mRNA表达,改善APP/PS1双转基因小鼠胰岛素信号转导,提示姜黄素可能通过调节胰岛素信号转导机制发挥抗阿尔茨海默病作用.  相似文献   

7.
目的 研究脑脊液内移植小鼠骨髓基质细胞(MSCs)对铜锌超氧化物歧化酶1(SOD1)转基因小鼠的作用及机制.方法 将5×105 MSCs经枕大池移植(8、10和12周龄时)到SOD1转基因小鼠的脑脊液中.通过悬线试验和运动神经元计数来评估小鼠的疾病进展.应用免疫荧光染色观察15周龄SOD1小鼠脊髓前角胶质细胞的活化.应用反转录-聚合酶反应检测MSCs神经营养因子mRNA的表达.结果 鞘内移植MSCs能够改善SOD1小鼠的运动行为,并保护运动神经元.MSCs鞘内移植明显减轻SOD1小鼠脊髓前角小胶质细胞(52±7比38 ±7;F =69.3,P=0.02)和星形胶质细胞(79±9比63 ±9;F=40.7,P=0.03)的活化.另外,在炎症环境中,MSCs神经生长因子mRNA的表达明显增多(P<0.05).结论 鞘内移植MSCs对SOD1转基因小鼠有治疗作用,可能与减轻神经炎症和分泌神经生长因子发挥了神经保护作用有关.  相似文献   

8.
目的 研究胸腺和活化调节趋化因子(TARC)在红斑狼疮小鼠肾组织中的表达与作用.方法 16周龄MRI/lpr小鼠和BALB/c小鼠各4只,比较两组小鼠24 h尿蛋白,并用逆转录.聚合酶链反应(RT-PCR)技术和蛋白印迹的方法检测两组小鼠肾组织中TARC mRNA及蛋白表达情况.结果 MRL/lpr小鼠24 h尿蛋白高于BALB/c小鼠(P<0.05);MRL/lpr小鼠肾组织TARC mRNA表达较BALB/c小鼠明显升高(P<0.05);MRL/lpr小鼠肾组织中可检测出TARC蛋白条带,而BALB/c小鼠肾脏组织中未能测得.结论 TARC在红斑狼疮小鼠肾脏组织中表达增高,并可能参与介导小鼠狼疮性肾炎的发病.  相似文献   

9.
目的 建立Dicer1转基因小鼠模型.方法 构建pcDNA3.I-Dicer1转基因构件,经酶切、纯化后通过显微注射方法导人BDF1小鼠受精卵原核并移植到同期受孕的ICR受体母鼠输卵管内.出生后仔鼠用PCR和Southern方法检测鼠尾DNA鉴定基因型,通过免疫组化检测Dicer1基冈表达.结果 显微注射172枚卵,移植119枚卵于3只受体输卵管中,2只怀孕,共产仔15只,经PCR检测获得6只阳性鼠,Southern榆测6只均为阳性.对Southern检测阳性转基因小鼠子代进行RT-PCR检测和免疫组化分析证明Dicer1基因在肝脏、肾脏、肺内均有表达.对腹腔肿胀的转基因阳性1号鼠解剖发现肝脏、脾脏明显增大,胚胎发育异常.结论 成功建立Dicer1基因表达的转基因小鼠模型,该模型为进一步研究DICER1基因功能及miRNA的表达及功能等奠定基础.  相似文献   

10.
【目的】观察清热利湿活血方对乙型肝炎病毒(HBV)转基因小鼠的抗病毒作用及对肝组织TANK结合激酶1(TKB1)、干扰素调控因子3(IRF3)表达的影响,以阐明其作用机制。【方法】首先建立清热利湿活血方的HPLC指纹图谱。再将HBV转基因小鼠随机分为4组,即模型组,苦参素组,清热利湿活血方高、低剂量组,每组8只。苦参素组小鼠给予灌胃剂量为0.15 g·kg~(-1)·d~(-1)的苦参素混悬液,清热利湿活血方高、低剂量组小鼠分别给予灌胃剂量为7、2 g·kg~(-1)·d~(-1)的清热利湿活血方混悬液,给药共5周。治疗结束后,采用酶链免疫吸附法(ELISA)检测血清及肝组织乙型肝炎病毒表面抗原(HBsAg),采用常规苏木素—伊红(HE)染色观察肝组织病理变化,采用定量聚合酶链反应(qPCR)法检测血清中HBV DNA及肝组织中HBV DNA、TKB1 mRNA、IRF3 mRNA表达,采用蛋白免疫印迹(Western blot)法检测肝组织TKB1、IRF3的蛋白表达。【结果】标定14个特征峰构成清热利湿活血方的指纹图谱,其中1号峰为没食子酸,8号峰为柯里拉京,9号峰为虎杖苷,10号峰为鞣花酸,13号峰为甘草酸,14号峰为齐墩果酸。高剂量清热利湿活血方可减轻肝细胞轻度脂肪变性、肝细胞轻度水肿及Kuffer细胞增生等病理改变,显著降低HBV转基因小鼠肝脏和血清中的HBsAg、HBV DNA水平(P0.05或P0.01),显著增强小鼠TKB1、IRF3的mRNA及蛋白表达水平(P0.05或P0.01)。【结论】清热利湿活血方有抗HBV作用,其抗病毒机制可能与增强TKB1、IRF7 mRNA及蛋白表达,进而影响干扰素分泌有关。  相似文献   

11.
Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P < 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (>0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P <0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P < 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.  相似文献   

12.
Objective: To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods: SD rats served as both donors and recipients. 4℃ sodium lactate Ringer's was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava (IVC) inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results: Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion: This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.  相似文献   

13.
Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P< 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P< 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.  相似文献   

14.
Increasing maternal age is the only etiological factor unequivocally linked to Down's syndrome in humans. The occurrence rate of newborns with Down's syndrome is about 1/220 in women over 35 years old. However, the occurrence rate in embryos fertilized in vitro, of the elder woman is unclear. Using FISH we screened the number of chromosome 21 in preimplanted embryos of 5 elderly women (average age, 38.4 years) to study the feasibility and necessity of screening trisomy 21 in embryos in patients over 35 years old at the in vitro fertilization (IVF) center.  相似文献   

15.
Real-time three-dimensional echocardiography (RT3DE)is a new ultrasound technique that enables dynamic threedimensional visualization and quantification of the heart in real time. Investigation of feasibility and methodology of RT3DE in determining left ventricular (LV) and right ventricular (RV) volumes, RT3DE was performed in 35 normal adults using Philips SONOS 7500 system with a 2-4 MHz matrix array transducer. The 60°×60° "pyramid" volume database was obtained and analyzed on a TomTec echo workstation. Both LV and RV volumes were calculated with four 3DE methods (i.e. apical 2, 4, 8, and 16-plane) through manually tracing ventricular endocardial borders in end diastole and end systole. Stroke volumes were then calculated. LV volume was also measured by 2DE Simpson's rule using GE VIVID 7 ultrasound machine.  相似文献   

16.
A clinical guideline for the therapeutic interventions of integrative medicine may be defined as a written document which states a series of recommendations on therapeutic interventions of integrative medicine for a special disease or condition. The guideline may provide assistance to medical professionals in making clinical decisions aimed at improving the clinical outcome of patients and reducing the costs of medical care(~'4~. Recommendations issued by a guideline should be based on the best available evidence in both Western and Chinese medicine. For fulfilling this purpose, the development of clinical guidelines for therapeutic interventions in the field of integrative medicine should follow scientific principles and undergo a rigorous processes.  相似文献   

17.
Objective:To probe into the influence of changes of ovarian hormones on the pathogenesis of the specific sub-type premenstrual syndrome(PMS)and reveal partial microcosmic mechanisms of adverse flow of liver-qi.Methods:Estradiol(E2)and progesterone(P)levels in serum were determined at different phases of menstrual cycle by radioimmunoassay.Results:In the group of PMS with adverse flow of liver-qi.the secretive peak value Of E2 and P at the follicular phase significantly decreased,and the secretive peak value at the luteal phase did not come into being.Conclusions:Low E2 and P secretive peak at the follicular phase and absence of secretive peak at the luteal phase is one of the microcosmic mechanisms of PMS with adverse flow of liver-qi.One of the pathophysiologic mechanisms of specific sub-type PMS is probably the continuous low level of E2and P.  相似文献   

18.
目的:评价使用安心颗粒对急诊经皮冠状动脉介入术(PPCI)术后生活质量的影响.方法:将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组(术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次)和对照组(仅接受基础药物治疗).所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表(MIDAS)、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果:入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异(P>0.05);出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低(P<0.05);组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低(P<0.05).两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血(P>0.05).两组发生轻度血小板减少症的患者数比较无差异(P>0.05).结论:PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.  相似文献   

19.
Journal of Nanjing Medical University (English Edition) JNMU, sponsored by Nanjing Medical University, was established in 1987. It is a bimonthly comprehensive English medical journal published locally and abroad.Since 2007, Journal of Nanjing Medical University (English Edition )was granted Elsevier the full publishing and distribution rights worldwide for the Electronic Edition, excluding the People's Republic of China.  相似文献   

20.
Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P<0.01);the MAP decreased(P<0.01)and the HR increased drastically(P<0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.  相似文献   

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