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1.
目的研究胆宁片对高脂饮食诱导的非酒精性脂肪肝(NAFLD)模型大鼠肝脏的保护作用。方法将SPF级SD雄性大鼠随机分为正常组、模型组、胆宁片组、绞股蓝组及多烯磷脂酰胆碱组,采用高脂饲料喂养的方式复制NAFLD大鼠模型,模型复制成功后各组分别给予相应药物灌胃,4周后处死大鼠,观察各组大鼠肝脏组织病理学变化,测定并比较各组大鼠肝指数,血清甘油三酯(TG)、总胆固醇(TC)、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)含量及肝组织中肿瘤坏死因子-α(TNF-α)、转化生长因子-β_1(TGF-β_1)、丙二醛(MDA)的含量。结果胆宁片能有效降低NAFLD模型大鼠肝指数及血清TG,TC,LDL-C含量,升高血清HDL-C含量(P0.05或P0.01),在降低TG方面作用明显优于绞股蓝(P0.01),在降低TC方面作用明显优于多烯磷脂酰胆碱(P0.01);能明显降低NAFLD模型大鼠肝组织中TNF-α,TGF-β_1,MDA的含量(P0.01),作用优于绞股蓝(P0.05),与多烯磷脂酰胆碱相当;能明显改善多余脂肪在肝细胞内堆积的状态。结论胆宁片对NAFLD模型大鼠肝脏有保护作用,其作用机制与降低肝组织中TNF-α,TGF-β_1,MDA的含量及血脂有关。  相似文献   

2.
IGF-1、IGFBP-3在大鼠非酒精性脂肪性肝病进展中的变化   总被引:1,自引:0,他引:1  
目的观察非酒精性脂肪性肝病(NAFLD)大鼠血清胰岛素样生长因子1(IGF-1)、胰岛素样生长因子结合蛋白3(IGFBP-3)的表达及多烯磷脂酰胆碱对其的影响。方法采用高脂饲料喂养建立大鼠NAFLD模型,以多烯磷脂酰胆碱进行干预。HE染色动态观察大鼠4、8、12周时肝组织病理学变化,IRMA法动态监测血清IGF-1、IGFBP-3含量。结果正常组大鼠各时间点肝组织病理均无明显异常;模型组随高脂饮食时间延长,在4、8、12周3个时相点肝组织脂肪变、炎症程度、气球样变及NAFLD活动度积分逐渐增强,血清IGF-1、IGFBP-3逐渐明显下降,且模型组各时相点IGF-1、IGFBP-3的水平较正常组同一时相点明显降低;应用多烯磷脂酰胆碱干预后,大鼠肝组织炎症程度、NAFLD活动度积分较模型组显著降低,IGF-1、IGFBP-3的水平则较模型组明显增高。结论血清IGF-1、IGFBP-3水平随大鼠NAFLD进展而降低。  相似文献   

3.
目的 在脂肪组织基因表达水平上分析多烯磷脂酰胆碱对非酒精性脂肪肝(NAFLD)大鼠模型的干预效果及其作用机制.方法 以高脂饲料饲养Wistar大鼠诱发NAFLD并进行多烯磷脂酰胆碱干预,通过RT-qPCR方法 检测实验大鼠脂肪组织瘦素、肿瘤坏死因子α、脂联素、抵抗素和解偶联蛋白2的mRNA相对水平,并以t-检验进行数据统计分析.结果 干预组瘦素mRNA相对水平高于对照组(P>0.05),干预组肿瘤坏死因子αmRNA相对水平显著高于对照组(P<0.05),所有干预组样品的脂联素、抵抗素和解偶联蛋白2的mRNA均未被检测到.结论 多烯磷脂酰胆碱有助于增加瘦素基因的表达并适用于肥胖原因所致的NAFLD病例.  相似文献   

4.
虎杖水提液对非酒精性脂肪肝大鼠的干预效果   总被引:19,自引:0,他引:19  
目的分析虎杖水提液对非酒精性脂肪肝大鼠进行干预的效果。方法以高脂饲料饲养Wistar大鼠12周,诱发NAFLD,然后转以基础饲料饲养4周,并对NAFLD大鼠进行虎杖水提液干预与对照实验。通过生化检测方法分析各组大鼠血清和肝组织甘油三酯、总胆固醇和葡萄糖水平的变化。结果干预组大鼠的肝组织和血清的甘油三酯、总胆固醇和葡萄糖含量均低于对照组,其中肝、血总胆固醇和血清甘油三酯含量的差异显著(P<0.05)。结论虎杖水提液能够调整和改善NAFLD大鼠的脂肪和糖代谢,降低肝组织和血清甘油三酯、总胆固醇和葡萄糖水平。  相似文献   

5.
目的 观察多烯磷脂酰胆碱对非酒精性脂肪性肝病(NAFLD)模型大鼠肝脏SREBP-1c、ABCA1蛋白表达的影响.方法 采用高脂饲料建立SD大鼠NAFLD模型,并用多烯磷脂酰胆碱胶囊进行干预治疗4周,观察该药对大鼠血脂、肝脏脂肪含量的影响,并用免疫组化法观察药物对大鼠肝脏SREBP-1c、ABCA1蛋白表达的影响.结果 空白组、观察组肝脏TG、TC含量明显低于模型组(P<0.01);同时SREBP-1c蛋白表达水平也明显低于模型组(P<0.01),但观察组与空白组比较差异无统计学意义;而ABCA1蛋白表达水平均明显高于模型组(P<0.01).结论 对肝脏组织SREBP-1c蛋白表达的下调,以及对ABCA1蛋白表达的上调,可能是多烯磷脂酰胆碱改善NAFLD的重要机制.  相似文献   

6.
目的 探讨多烯磷脂酰胆碱对高脂饮食脂肪肝大鼠肝脏脂质沉积的抑制效应及其机制.方法 采用单纯高脂饮食诱导的大鼠脂肪肝模型.在造模6周后, 随机分为模型组和多烯磷脂酰胆碱组,分别灌胃给予饮用水和相应药物,疗程4周,实验结束时取材观察:①肝组织病理变化(HE染色);②血清脂联素(adiponection,ADP),肝组织三酰甘油(triglyceride, TG)、游离脂肪酸(free fatty acid, FFA)、肝组织脂联素受体(adiponection receptor2, AdipoR2)、腺苷酸活化的蛋白激酶(AMP-Activated K inase, AMPK)、脂肪酸合成酶(fatty acid synthase, FAS)、乙酰辅酶A羧化酶(acety1 CoA carboxylase, ACCase)、丙二酰辅酶A(Malony1 CoA)含量的变化及其各指标间相关性分析.结果 模型组肝组织出现程度不同的肝细胞脂肪变性及空泡样变.模型组肝组织TG、FFA、FAS、ACCase、Malony1-CoA含量较正常组显著升高(P<0.01),血清ADP与肝组织AdipoR2、AMPK显著降低(P<0.01).多烯磷脂酰胆碱组的肝脏脂肪变性显著减轻,肝组织TG、FFA、FAS、ACCase、Malony1-CoA含量显著降低(P<0 01),血清ADP与肝组织AdipoR2、AMPK含量明显升高(P<0.01).结论 多烯磷脂酰胆碱对脂肪肝大鼠肝脏脂质沉积有高强度的抑制效应,其机制与改善脂肪酸代谢有关.  相似文献   

7.
目的 研究血清抵抗素在实验性脂肪肝中的变化及多烯磷脂酰胆碱的干预作用。方法 采用单纯高脂饮食诱导的大鼠脂肪肝模型,随机分正常组、模型组和多烯磷脂酰胆碱组,造模12周,其多烯磷脂酰胆碱组在第8周起予以多烯磷脂酰胆碱灌胃干预5周。观察项目:肝组织HE染色,观察各组肝脂肪变性程度变化;肝组织甘油三酯(triglyceride,TG)、游离脂肪酸(free fatty acid,FFA)、血清抵抗素含量;肝组织TG、FFA、血清抵抗素含量间的相关性分析。结果 模型组肝组织出现严重的脂肪变性,肝组织TG、FFA含量均显著升高(t值分别为14.85和19.61,P<0.01);血清抵抗素含量亦显著升高(t=12.94,P<0.01);多烯磷脂酰胆碱组的TG、FFA含量显著低于模型组(P<0.01),血清抵抗素含量亦显著低于模型组(P<0.01)。肝脏TG、FFA含量与血清抵抗素含量之间均呈正相关。结论 实验性脂肪肝大鼠的血清抵抗素水平显著升高,在脂肪肝病理机制中有重要意义。多烯磷脂酰胆碱可显著降低脂肪肝大鼠的血清抵抗素水平,这可能是其防治脂肪肝作用的重要药理环节。  相似文献   

8.
目的 观察多烯磷脂酰胆碱对NAFLD模型大鼠肝脏SREBP-1c、ABCA1蛋白表达的影响。方法 采用高脂饲料建立SD大鼠非酒精性脂肪肝模型,并用易善复(多烯磷脂酰胆碱胶囊)进行干预治疗4周,观察该药对大鼠血脂、肝脏脂肪含量的影响,并用免疫组化法观察药物对大鼠肝脏SREBP-1c、ABCA1蛋白表达的影响。结果 空白组、易善复组肝脏TG、TC含量明显低于模型组(P<0.01,P<0.05),同时SREBP-1c蛋白表达水也明显低于模型组(P<0.01),而ABCA1蛋白表达水平均明显高于模型组(P<0.01)。结论 对肝脏组SREBP-1c蛋白表达的下调,及对ABCA1蛋白表达的上调,可能是多烯磷脂酰胆碱改善NAFLD的重要机制。  相似文献   

9.
多烯磷脂酰胆碱对NAFLD大鼠脂肪组织瘦素基因表达的影响   总被引:1,自引:0,他引:1  
目的以分子生物学方法检测药物干预对NAFLD大鼠基因表达的影响.方法以多烯磷脂酰胆碱和蒸馏水灌喂NAFLD大鼠进行干预与对照实验,为期4周.提取大鼠脂肪组织的总RNA并逆转录成为cDNA,通过实时定量PCR方法检测两组大鼠的瘦素mRNA相对水平的变化.结果干预组大鼠脂肪组织瘦素mRNA的相对水平比对照组有所增加,但差异不显著(P>0.05).结论多烯磷脂酰胆碱有助于增加脂肪组织瘦素mRNA水平和改善肝血脂质代谢.  相似文献   

10.
目的:以逆转录(RT)和实时定量聚合酶链式反应(Real-time qPCR)检测和分析药物对于非酒精性脂肪肝病(NAFLD)干预效果.方法:以高脂饲料饲养Wistar大鼠12周,诱发NAFLD,然后转以基础饲料饲养,并对实验大鼠进行多烯磷脂酰胆碱干预与蒸馏水对照的实验,每组大鼠8只,为期4周.提取脂肪组织的总RNA,逆转录为cDNA,通过实时定量PCR检测肿瘤坏死因子α(TNF-α)mRNA的相对水平,并以t-检验进行数据的统计分析.结果:干预组大鼠脂肪组织TNF-α mRNA的相对水平(0.269±0.047)高于对照组(0.125±0.015),两组间差异显著(t=3.094;P=0.009).结论:多烯磷脂酰胆碱干预可显著增加NAFLD大鼠脂肪组织TNF-α基因的表达而不利于实验大鼠肝内的糖代谢过程.  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.
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   

13.
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   

14.
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   

15.
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   

16.
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   

17.
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   

18.
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   

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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