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1.
目的:探讨雌激素受体(estrogen receptors,ERs)在帕金森病(Parkinson’s disease,PD)中的作用特点?方法:应用经典化学毒素MPTP腹腔注射制备小鼠PD模型,WT?αERKO 和βERKO 雄性小鼠随机分为Saline 组和MPTP组,爬竿试验观察行为学改变,荧光定量PCR法检测纹状体和中脑ERα?ERβ?TH?DAT和VMAT2 mRNA表达的变化?结果:与WT相比,αERKO小鼠中多巴胺缺失程度更大,爬竿试验显示αERKO小鼠更早出现行为学异常?αERKO和βERKO小鼠中脑TH?DAT和VMAT2 mRNA表达均降低?WT小鼠MPTP染毒致PD模型后,纹状体和中脑ERα mRNA表达增加,ERβ mRNA表达降低?MPTP致PD模型后,αERKO和βERKO小鼠TH和DAT mRNA表达变化情况与WT小鼠不同,βERKO小鼠VMAT2 mRNA表达变化情况与WT小鼠相同,但αERKO小鼠VMAT2 mRNA表达变化情况与WT小鼠不同?结论:ERs在黑质纹状体DA系统中有神经保护作用,ERα亚型在此过程中发挥着更重要的作用?  相似文献   

2.
雌激素对福尔马林致痛后小鼠脊髓背角c-Fos和P物质的影响   总被引:1,自引:1,他引:0  
目的观察雌激素对福尔马林致痛后小鼠痛觉评分及脊髓背角c-Fos和P物质(SP)表达的影响。方法选用雌性C57/BL6小鼠15只,分成对照组(control)、去卵巢手术组(OVX+V)、去卵巢手术加雌激素组(OVX+E),每组5只。采用痛觉评分分析雌激素对小鼠福尔马林足底注射后痛行为的影响,结合c-Fos及SP免疫组化,观察雌激素对脊髓L3~L5节段背角浅层神经元激活及痛觉传入的影响。结果小鼠福尔马林致痛后control组、OVX+V组和OVX+E组在第一时相的痛觉评分组间无统计学差异(P>0.05);间歇期及第二时相早期的痛觉评分OVX+V组明显高于control组和OVX+E组(P<0.05)。卵巢摘除增加福尔马林致痛后引起的脊髓背角FLIN数(P<0.01)和SP免疫阳性反应物,而雌激素能有效抑制福尔马林引起的注射侧背角FLIN数的升高(P<0.01)以及SP免疫阳性反应物显著降低。结论雌激素通过调节脊髓背角浅层感觉神经元的活动及痛觉纤维的传入参与对小鼠福尔马林致痛的镇痛作用。  相似文献   

3.
目的:探讨抗抑郁剂盐酸帕罗西汀对卵巢切除大鼠学习记忆能力、血清雌激素水平及大鼠海马雌激素受体表达的影响。方法采用 SD 雌鼠双侧卵巢切除(OVX)作为雌激素波动引起的抑郁与认知障碍模型,用 Morris 水迷宫实验来测试大鼠的学习记忆功能。实验共分为正常对照组、OVX对照组、OVX 药物组。予5-羟色胺重摄取抑制剂类药物:盐酸帕罗西汀10 mg/(kg·d)干预4周。采用 ELISA 法测量SD 大鼠血清黄体生成素、卵泡刺激素、雌激素。免疫组化法检测大鼠海马雌激素受体α(ERα)和雌激素受体β(ERβ)的阳性细胞表达数。结果① Morris 水迷宫实验中,OVX对照组和 OVX 药物组的逃避潜伏期明显缩短,停留在平台时间百分比明显增加。② OVX 药物组的血清雌激素较OVX 对照组明显增加(P <0.05)。③药物组与非药物组的ERα、ERβ表达无明显差异。结论帕罗西汀增加OVX 大鼠血清雌激素水平和改善学习记忆能力,而对海马ERα、ERβ表达无明显影响。  相似文献   

4.
目的 介绍一种改良小鼠蛛网膜下腔置管技术,观察长期置管对小鼠运动协调功能和痛觉基线的影响.方法 20只雄性C57BL/6J小鼠,随机分为置管组(n=10)和假手术组(n=10).比较两组小鼠置管前后,运动协调功能和病觉基线(包括缩瓜机械痛阈,热痛缩爪反应潜伏期、热痛刺激甩尾反应潜伏期,甩尾压痛阚值)是否有差异.结果 置管后10~11 d,置管组与假手术组之间以及同组小鼠置管前后,运动协调功能和痛觉基线差异均无统计学意义(P>0.10).结论 改良小鼠腰段蛛网膜下腔置管法简单可靠,使用该方法长期置管不影响小鼠运动协调功能和痛觉基线,为研究疼痛在脊髓水平的分子生物学调节机制提供了有力工具.  相似文献   

5.
目的研究六味地黄丸对去卵巢雌性大鼠吗啡镇痛耐受的影响。方法建立吗啡耐受模型,期间用热甩尾和压后足实验测定痛阈。免疫组化方法检测大鼠脑组织中ER的表达。结果雌性大鼠去卵巢后吗啡耐受形成时间缩短,六味地黄丸处理可以部分延长吗啡耐受形成。去卵巢后大鼠ERα表达在pv(室旁核)、ar(下丘脑室旁核)、vmh(下丘脑腹内侧核)区明显减少,六味地黄丸处理后ERα表达明显增加(P<0.05)。结论去卵巢手术处理可以增强大鼠吗啡镇痛耐受的形成,给予六味地黄丸具有逆转作用。六味地黄丸调节ERα在去卵巢大鼠脑组织中的表达,有类雌激素样作用,提示六味地黄丸可能通过调节下丘脑垂体性腺轴的功能影响吗啡镇痛耐受。  相似文献   

6.
目的:探讨性激素对外周痛觉的调节作用.方法:制备去卵巢、去睾丸大鼠模型,采用甩尾热痛仪和弗莱毛测痛法观察去性腺后雌性和雄性大鼠外周痛阈,并与各自假手术组作对比.结果:雌性大鼠去卵巢后体质量明显增加,子宫质量明显减轻(P<0.01);雄性大鼠去睾丸后体质量无明显变化.雌性大鼠去卵巢后后肢足底皮肤对机械性刺激的100%缩腿阈值明显降低(P<0.01),而热痛阈无明显改变.雄性大鼠去睾丸后后肢足底皮肤对机械性刺激的100%缩腿阈值和热刺激甩尾潜伏期均无明显改变.结论:雄激素水平的改变对大鼠外周痛阈无明显影响,而卵巢激素可能抑制大鼠外周机械性痛敏的形成,但对热痛阈无明显影响.  相似文献   

7.
目的 探讨雌激素水平降低对子宫雌激素受体基因表达的影响,以及穴位激光照射肾俞穴对去卵巢大鼠子宫雌激素受体基因表达的调整作用.方法 选用3月龄Sprague-Dawley雌性大鼠,将动物分为正常对照组(Nor),去卵巢组(OVX)和去卵巢穴位激光照射组(OVX+L)3组.采用半定量RT-PCR方法获得大鼠子宫雌激素受体α(ERα)和雌激素受体β(ERβ)mRNA的逆转录表达产物cDNA,用琼脂糖凝胶电泳方法检测,计算机图像分析系统进行统计分析.结果 与正常对照组比较,去卵巢组大鼠子宫内ER αmRNA的RT-PCR表达产物减少(P<0.05),ER βmRNA的RT-PCR表达产物增加(P<0.05);与去卵巢组相比,去卵巢穴位激光照射组大鼠子宫内ER αmRNA的RT-PCR产物升高(P<0.05),ER βmRNA的RT-PCR产物增加(P<0.05).结论 大鼠去卵巢后,子宫ER α的表达水平显著下降,穴位激光照射对去势大鼠子宫ERmRNA的表达有一定的调节作用.可能与穴位激光照射对去势大鼠生殖内分泌系统的调节有关.  相似文献   

8.
目的探讨骨松灵合剂对去卵巢大鼠骨组织雌激素受体(ER)表达的影响。方法本实验采用免疫组织化学方法检测雌性大鼠去卵巢后骨组织中ER的变化,以及骨松灵合剂、雌激素治疗后对其产生的影响。结果椎体松质骨中ERα、ERB主要分布于骨小梁周围的成骨细胞、破骨细胞及骨髓基质细胞中,阳性颗粒为棕黄色,胞浆胞核均有表达,但胞核着色较深,与假手术组(sham组)(ERα:140.6±5.7;ERB:118.6±6.5)比较,去卵巢对照组(OVX组)(ERα:119.2±7.1;ERβ:80.8±3.7)大鼠骨小梁周围及骨髓中阳性细胞灰度明显降低(P〈0.01),而中药组(ERα:137.5±4.9;ERβ:113.8±7.4)、E2组(ERα:143.8±6.2;ERβ:116.6±4.8)阳性细胞灰度与OVX组相比显著增加(P〈0.01),中药组与E2组相比较差异无明显统计学意义(P〉0.05)。结论骨松灵合剂可以上调大鼠去卵巢后骨组织中ERα、ERβ表达,促进骨形成,可能是治疗骨质疏松症的重要机制。  相似文献   

9.
去卵巢大鼠雌激素替代后背根神经节P2Y1受体表达增加   总被引:2,自引:0,他引:2  
目的考察痛觉敏感性与体内雌孕激素水平的可能关系。方法将大鼠分为去卵巢组(8只)和去卵巢后雌激素替代组(8只),去卵巢组通过去卵巢手术降低大鼠体内卵巢激素水平,去卵巢后雌激素替代组在去卵巢手术后1周给予外源性雌激素替代。分别在两组大鼠足底注射P2Y1选择性激动剂2-MeSADP,通过行为学实验观察对大鼠足底机械痛阈的影响,并通过实时定量PCR研究2组大鼠背根神经节(DRG)中P2Y1受体mRNA表达的差别。结果与去卵巢组大鼠相比,雌激素替代组大鼠机械痛阈增高(P=0.014);足底注射P2Y1选择性激动剂2-MeSADP后,去卵巢组大鼠在注射药物前后痛阈无统计学差异,而雌激素替代组大鼠出现痛觉增敏。实时定量PCR结果表明雌激素替代组大鼠DRG P2Y1受体mRNA的表达高于去卵巢组大鼠(P<0.05)。结论雌激素可能通过促进DRG上P2Y1受体的表达从而影响外周机械痛阈。  相似文献   

10.
目的:探讨催产素受体基因敲除对雌激素调节骨密度的影响. 方法:选取3月龄野生型Oxtr+/+和纯合型Oxtr-/-雌性BABL/c小鼠各20只,随机分成野生型组(WT组)、野生型+雌二醇组(WT+E2组)、野生型去势组(WT OVX组)、野生型去势+雌二醇组(WT OVX+E2组)、纯合型组(KO组)、纯合型+雌二醇组(KO+E2组)、纯合型去势组(KO OVX组)及纯合型去势+雌二醇组(KO OVX+E2组),每组5只.17β-雌二醇皮下注射,每只50 μg·d-1,每天1次.实验4周后测量各组小鼠脊柱和股骨的骨密度. 结果:与WT组相比较,WT+E2组的骨密度显著增高(P<0.05),WT OVX组的骨密度显著降低(P<0.05),WT OVX+E2组的骨密度差异无统计学意义(P>0.05);与WT OVX组相比较,WT OVX+E2组的骨密度明显增高,差异具有统计学意义(P<0.05);与KO组相比较,KO+E2组、KO OVX组及KO OVX+E2组的骨密度差异均无统计学意义(P>0.05);KO OVX+E2组与KO OVX组相比较,骨密度差异也无统计学意义(P>0.05).结论:催产素参与调节雌激素的骨合成代谢作用.  相似文献   

11.
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   

12.
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   

13.
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   

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.
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   

19.
Objective To measure Derpl and Blot5 allergen levels in asthmatics' homes in Hongkong.Methods Seventy houses were enrolled for a mite indoor environment study. Dust samples were obtained from two sites of each patients' house: bed and floor. Derpl and Blot5 levels were quantified by a two-site monoclonal antibody-based ELISA technique.Results The levels of Derpl allergens found in bed (geometric mean (GM) 3.43 μg/g of dust; 95%CI, 1.89-4.96 μg/g)and on the floor (GM 1.12 μg/g of dust; 95%CI, 0.71-1.53 μg/g) indicated significant differences (P=0.005). However, the levels of Blot5 allergens found in bed (GM 19.00 μg/g of dust; 95%CI, 0.89-38.90 μg/g) and on the floor (GM 6.14 μg/g of dust; 95%CI, 0.40-11.90 μg/g) showed no statistically significant difference. In addition, in regards to the exposure index for Derpl and Blot5 allergens found in bed and on the floor, 17.6% in bed and 8.6% on the floor had levels of Blot5 ≥ 10 μg/g of dust, higher than those obtained for Derp1 (7.2% and 0% in bed and on the floor respectively, P< 0.05); higher percentages in bed and on the floor (25.0% and 35.7%) were observed for levels of Blot5 =0 μg/g of dust as compared with Derpl in bed and on the floor (4.3% and 14.5% respectively, P< 0.05).Conclusions Derpl and Blot5 are the major allergens found in this regional study, Blot5 is a more potent allergen in Hongkong, probably reflecting the high level of exposure to Blomia tropicalis (Bt). Bt and Dermatophagoides pteronyssinus (Dp) allergens should be included for precise diagnosis and effective immuno-therapeutic treatment of mite allergy in Hongkong.  相似文献   

20.
ANTI-PROLIFERATION EFFECT OF ORIDONIN ON HL-60 CELLS AND ITS MECHANISM   总被引:4,自引:0,他引:4  
Objcetive To investigate the anti-proliferation effect of oridonin on leukemic HL-60 cells and its mechanism. Methods HL-60 cells in vitro in culture medium were given different concentrations of oridonin. The inhibitory rate of cells were measured by microculture tetrazolium (MTT) assay, cell apoptotic rate was detected by flow cytometry (FCM), morphology of cell apoptosis was observed by hoechst 33258 fluorescence staining, and the activity of telomerase was detected using telomere repeat amplification protocol (TRAP) PCR-ELISA before and after apoptosis occurred. Results Oridonin could decrease telomerase activity, inhibit growth of HL-60 cells, and cause apoptosis significantly. The suppression was both in time- and dose-dependent manner. Marked morphological changes of cell apoptosis including condensation of chromatin and nuclear fragmentation were observed clearly by hoechst 33258 fluorescence staining especially after cells were treated 48-60 hours by oridonin. Conclusions Oridonin has apparent anti-proliferation and apoptotic effects on HL-60 cells in vitro, decreasing telomerase activity of HL-60 cells may be one of its most important mechanisms. These results will provide strong laboratory evidence of oridonin for clinical treatment of acute leukemia.  相似文献   

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