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1.
目的观察商陆水煎剂对阿霉素肾硬化大鼠肾小球硬化和肾实质细胞过度凋亡的防治作用。方法48只SD大鼠随机分为对照组、模型组、商陆治疗组和依那普利组,采用单侧肾切除并阿霉素尾静脉注射的方法建立大鼠肾小球硬化模型,手术后7 d分别给予灌胃治疗,共93 d。观察商陆水煎剂对肾小球硬化大鼠尿蛋白、血肌酐(Scr)、尿素氮(BUN)、肾脏病理形态、肾小球硬化指数(GSI)和肾小球细胞凋亡指数的影响。结果与对照组比较,模型组、商陆治疗组和依那普利组大鼠尿蛋白、Scr、BUN、GSI和细胞调亡指数增加(P<0.05),肾脏病理损害加重;与模型组比较,商陆治疗组和依那普利组尿蛋白、Scr、BUN、GSI和细胞调亡指数显著降低(P<0.01),肾脏病理损害明显改善。商陆治疗组与依那普利组比较,各指标差异无统计学意义(P>0.05)。结论商陆水煎剂能降低阿霉素肾小球硬化大鼠尿蛋白的排泄,保护肾功能,减轻肾脏病理损害及肾小球实质细胞的过度凋亡,进而延缓肾小球硬化的发生、发展。  相似文献   

2.
目的 研究细胞凋亡及凋亡信号途径在5/6肾切除(SNx)中的作用及机制。方法 复制5/6肾切除大鼠模型.在1、2、4、8、12、16、26和40周,用原位末端标记法、免疫组化、RT-PCR、Western—blot分别检测细胞凋亡、caspase-3,-8,-9的mRNA和蛋白质的水平。结果 模型熏盛幽现肾小球硬化和肾间质纤维化,肾小球、肾小管和肾间质的细胞凋亡数明显高于对照组(P〈0.05,P〈0.01);caspase-3,-8,-9的mRNA和蛋白质的变化趋势一致,与对照组比较病变过程中呈波浪式上调,高峰分别在4周和40周(P〈0.05),caspase-9的增长幅度明显高于caspase-8。结论 5/6肾切除大鼠的疾病进展与肾小球、肾小管和肾间质的细胞凋亡有关,死亡量体和线粒体信号途径均参与其中.线粒体信号途径起主要作用。  相似文献   

3.
目的研究糖皮质激素对慢性肾小球疾病肾硬化进展的作用。方法使用病理、免疫组化和肾功能检测方法。结果与未用药的硬化组比较,地塞米松(DEX)用药组肾小球基底膜增厚减轻;节段硬化、球囊增厚和间质炎性细胞的浸润明显减轻;胶原Ⅲ、Ⅳ在病变区域的积聚显著减少,肾功能得到不同程度的改善。结论DEX抑制胶原Ⅲ、Ⅳ在病变区域的增殖,可能有延缓肾小球硬化进展和改善肾功能的作用。  相似文献   

4.
目的观察炎症因子自细胞介素-1β(interleukin-1beta,IL-1β)在阿霉素肾病大鼠发生肾小球硬化过程中的表达,探讨辛伐他汀保护阿霉素肾病大鼠肾脏的机制。方法雄性SD大鼠分为正常对照组、阿霉素肾病组(模型组)和阿霉素肾病辛伐他汀治疗组(治疗组),分别灌胃给药11周。免疫组化法观测。肾组织中IL-1β的定位表达,半定量RT—PCR技术检测肾组织IL—1βmRNA的表达,酶联免疫吸附法检测血清和肾组织中IL-1β的水平,光镜观察肾小球硬化的情况。结果模型组肾组织IL-1β的表达明显增强(P〈0.01),伴有明显的肾小球硬化及肾功能损害(P〈0.01);与模型组比较,治疗组肾组织IL—1β的表达、肾小球硬化及肾功能损害均减轻(分别P〈0.05、P〈0.01、P〈0.05)。结论辛伐他汀可能通过降低肾组织内IL-1β的表达,对肾脏起保护作用。  相似文献   

5.
来氟米特对大鼠肾毒血清性肾炎早期肾损害的保护作用   总被引:4,自引:1,他引:4  
目的探讨来氟米特(LEF)对大鼠肾毒血清性肾炎早期肾损害的保护作用。方法建立大鼠肾毒血清肾炎模型,随机分为正常对照组、病理对照组、LEF干预组(5mg/kg/d,灌胃)。2周末检测24h尿蛋白含量、血清学指标;观察肾小球病理形态及免疫组化变化。结果病理对照组24h尿蛋白水平明显高于正常对照组(P〈0.01),血浆白蛋白水平明显低于正常对照组(P〈0.05),肾小球内细胞数、含新月体肾小球数、硬化肾小球数、肾组织中MCP-1、ED1^+细胞浸润明显高于正常对照组(P〈0.05)。肾组织中ED1^+细胞数与尿蛋白排泄量、形成新月体的肾小球百分数呈显著正相关(P〈0.01),形成新月体的肾小球百分数与尿蛋白排泄量亦呈显著正相关(P〈0.01)。LEF干预组大鼠尿蛋白水平、肾小球细胞总数、硬化肾小球数、新月体数、肾小球ED1^+细胞浸润及MCP-1表达均明显低于病理对照组(P〈0.01,0.05)。结论LEF能改善肾毒血清性肾炎大鼠早期肾脏病变,其机制可能部分与抑制肾组织MCP-1表达和巨噬细胞浸润有关。  相似文献   

6.
p27蛋白表达对肾硬化大鼠肾小球细胞增殖的影响   总被引:2,自引:0,他引:2  
目的:研究p27蛋白表达对肾硬化大鼠肾小球细胞增殖的影响。方法:建立阿霉素肾硬化大鼠模型,用RT-PCR方法检测增殖细胞核抗原(PCNA) mRNA的表达,免疫组化检测肾小球内PCNA和p27的表达。结果:疾病组PCNA mRNA表达明显增强,增殖指数进行性升高。对照组p27蛋白有一定水平表达,而疾病组其表达进行性下降;p27蛋白表达与增殖指数和PCNA mRNA表达呈负相关。结论:肾硬化过程中肾小球细胞增殖呈进行性增加,p27表达下调参与调控肾小球细胞的增殖。  相似文献   

7.
洛汀新对局灶节段性肾小球硬化大鼠尿液足细胞的影响   总被引:2,自引:1,他引:2  
目的 探讨尿液足细胞检测在局灶节段性肾小球硬化大鼠(FSGS)中的意义,洛汀新对FSGS大鼠足细胞排泄的影响。方法 42只SD大鼠随机分为实验组和治疗组。行大鼠左肾摘除,术后第7天给予阿霉素5mg/kg尾静脉注射,第28天重复注射阿霉素3mg/kg。第1次注药后1周,治疗组大鼠给予洛汀新3mg/(kg·d)灌胃,实验时间12周。动态检测术后第4、8、12周24h尿蛋白定量(TP/24h),血肌酐(cr),总胆固醇(TC)。间接免疫荧光法检测尿沉渣足细胞特异性标志蛋白(Podocalyxin)以检测尿液中足细胞水平。结果实验组大鼠各时间点TP/24h、Cr、TC均较同期治疗组升高,随时间进展同组各指标亦逐渐升高,部分有显著性差异。实验组第4、8、12周尿足细胞分别为(0.46±0.22)个/ml、(2.70±0.92)个/ml、(4.26±1.30)个/ml。治疗组分别为(O.0±0.O)个/ml、(1.03±0.70)个/ml、(2.49±1.01)个/ml。同一时间点两组尿液足细胞相比分别有显著差异(P〈O.01)。实验组大鼠肾组织病理损害呈进行性进展,第4周系膜细胞、系膜基质轻度增加;第8周系膜增生加重,部分肾小球出现节段硬化;第12周65%肾小球节段硬化,少数呈球性硬化。而治疗组肾病理改变较轻。尿足细胞数与肾小球硬化指数显著正相关,亦与TP/24h正相关。结论单侧肾切除加重复阿霉素注射可成功诱导肾硬化大鼠模型。尿液中脱落足细胞检测可作为判断FSGS病情活动性的标志之一。洛汀新可减少FSGS大鼠尿液足细胞的排泄而有肾保护作用。  相似文献   

8.
[目的]探讨肾病肾小球细胞凋亡(脱噬作用)介导因子的表达及依那普利对其的影响。[方法]8~10周雄性SD大鼠72只,随机分为干预组、模型组和对照组,各24只。于实验第1天、第21天分别对干预组、模型组大鼠注射阿霉素2mg/kg,对照组注射等量生理盐水。第2次注药后干预组大鼠的饮用水加入依那普利50mg/L。第2次注药后4周、12周、20周、28周各组分别处死4只大鼠,取肾组织行病理检测,并用末端标记法及电镜检测肾组织细胞凋亡。用免疫组化法检测肾组织Fas抗原(CD95)、Bcl-2蛋白和Ⅱ型血管紧张素Ⅱ受体(AT2R)表达;并计算其在肾小球中表达的阳性单位。[结果]在20周后,干预组和模型组大鼠肾小球出现硬化,肾小球细胞调亡频率也显著增加。但干预组大鼠肾小球硬化指数(GSI)和肾小球细胞凋亡指数(GAI)均较模型组小。在20周和28周,干预组和模型组肾小球Fas抗原表达较对照组显著性增加,Bcl-2蛋白表达较对照组显著性降低;28周时,于预组肾小球Bcl-2蛋白表达较模型组显著性增高。3组大鼠肾组织AT2R的表达主要在远曲小管,肾小球中未见表达。在干预组和模型组,Fas抗原和Bcl-2蛋白阳性单位值与GSI和GAI相关均有显著性。[结论]大鼠阿霉素肾病肾小球硬化时,肾小球细胞凋亡可能是受Fas抗原介导和Bcl-2蛋白调控的。依那普利于预可减少  相似文献   

9.
Ji ZQ  Huang CW  Liang CJ  Sun WW  Chen B  Tang PR 《中华医学杂志》2005,85(26):1836-1841
目的观察大黄酸对肾小球硬化及细胞凋亡的影响,以探讨大黄酸对肾小球硬化的保护作用。方法一侧肾切除加尾静脉注射阿霉素制作肾小球硬化大鼠模型,随机分为对照组、肾病组、大黄酸治疗组和苯那普利治疗组,分别在第6、8、10、12周处死每组6只大鼠,免疫组织化学染色测定肾皮质凋亡蛋白酶3(caspase3),比色法测定caspase3活性,凝胶电泳迁移率转换实验(EMSA)检测核因子κB(NFκB)活性,原位末端转移酶标记法(TUNEL)检测肾组织细胞凋亡,观察caspase3、NFκB的表达与肾组织细胞凋亡情况。结果肾病组出现明显蛋白尿,血白蛋白下降及胆固醇上升,肾小球硬化指数、细胞凋亡指数、NFκB活性及caspase3表达随时间延长均明显高于对照组(P<0.05或P<0.01)。各时点比较,第10周肾病组见大量TUNEL阳性细胞,并略高于12周(9.3±2.3比8.4±1.2,P>0.05),caspase3表达也最为显著,明显高于12周(11.4±2.5比8.2±1.7,P<0.05),主要分布在肾皮质毛细血管周围,与凋亡细胞表达趋于一致。大黄酸或苯那普利治疗后,8周起TUNEL阳性细胞明显减少,并维持在一定水平,NFκB活性和caspase3表达均降低(P<0.05),肾脏病理变化及生化改变明显改善,肾皮质caspase3表达与细胞凋亡指数呈正相关(r=0.836,P<0.01)。结论大黄酸对肾小球硬化有明显防治作用,可能通过影响NFκB、caspase3活性在肾小球硬化早期调控病理改变,caspase3表达下降可能是大黄酸减轻肾小球硬化细胞凋亡的分子机制之一。  相似文献   

10.
目的观察排毒双调综合疗法对慢性肾功能衰竭的治疗作用及细胞凋亡的影响,并探讨其作用机理。方法采用大鼠5/6肾切除动物模型,分为正常组、病理组、灌胃组、灌胃加灌肠组及综合疗法组,以各组大鼠治疗前后一般状况、肾功能、肾脏细胞凋亡等作为检测指标,来观察排毒双调综合疗法对实验性慢性肾功能衰竭大鼠的治疗作用,并与单纯灌胃、灌胃加灌肠疗法比较。结果综合疗法组较病理组、单纯灌胃组、灌胃加灌肠组肾小球、肾小管凋亡数明显减少(p<0.01,p<0.05,p<0.05),肾功能(BUN,Scr)亦较前述三组明显改善(p<0.01,p<0.05,p<0.05),一般状况等也好于前述三组。结论排毒双调综合疗法对慢性肾功能衰竭有减轻并延缓其进展的作用,且较单纯灌胃、灌胃加灌肠疗效为佳,其作用机理可能部分是通过影响肾脏细胞凋亡实现的。  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.
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   

15.
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   

16.
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   

17.
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   

18.
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   

19.
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   

20.
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   

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