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1.
目的:探讨白藜芦醇对小鼠永久性局灶脑缺血后血脑屏障损伤的影响. 方法:采用线段血管内栓塞大脑中动脉(MCAO)获得小鼠脑缺血模型,静脉注射Evans blue,观察白藜芦醇对缺血24 h后脑组织中Evans blue外渗范围和含量的影响,同时应用RT-PCR技术检测缺血脑组织中基质金属蛋白酶-9(MMP-9)的mRNA水平. 结果:白藜芦醇减轻了Evans blue外渗范围[(101±15) mm3 vs (149±17)mm3, P<0.01]和含量[(8.6±2.9)% vs (18.6±3.8)%, P<0.01],并能够抑制MMP-9的表达[(0.693±0.008) vs (1.537±0.037), P<0.01]. 结论:白藜芦醇可以抑制MMP-9活性,减轻血脑屏障的损害,其神经保护作用与此有关.  相似文献   

2.
目的:探讨稽留流产绒毛组织中Fas相关死亡结构域蛋白(FADD)及凋亡抑制蛋白家族成员Livin的表达.方法:采用免疫组化和RT-PCR方法检测30例稽留流产患者绒毛组织中FADD及Livin蛋白和mRNA的表达,并以30例正常早孕绒毛组织作对照.结果:稽留流产绒毛组织中FADD蛋白阳性表达率和mRNA相对表达量均高于对照组(86.7%vs60.0%x2=5.455.P=0.020;(1.195±0.264)vs(0.685±0.274),t=7.221.P=0.002).稽留流产绒毛组织中Livin蛋白阳性表达率和mRNA相对表达量均低于对照(63.3%vs90.0%,x2=5.963,P=0.015;(0.933±0.188)vs(1.630±0.305),t=10.660,P<0.001).结论:FADD过表达和Livin低表达诱导的滋养层细胞凋亡的增加可能参与了稽留流产的发生.  相似文献   

3.
目的:探讨人参皂苷Rg1对帕金森病(PD)模型小鼠黑质区凋亡信号蛋白Fas死亡结构域蛋白(FADD)、FADD样白细胞介素1-转化酶样抑制蛋白(FLIP)及Caspase-3表达的影响,阐明FADD和FLIP在PD发病机制中的作用及人参皂苷Rg1对多巴胺(DA)能神经元的保护作用。方法: 45只C57BL/6N小鼠随机分为对照组、模型组和人参皂苷Rg1组,每组15只。模型组小鼠腹腔注射1-甲基-4-苯基-1,2,3,6-四氢吡啶(MPTP),人参皂苷Rg1组小鼠注射MPTP前先注射人参皂苷Rg1,对照组小鼠腹腔注射生理盐水。观察各组小鼠行为学变化;采用免疫组织化学法和免疫蛋白印迹法检测各组小鼠中脑黑质区酪氨酸羟化酶(TH)、FLIP、FADD及Caspase-3的表达。结果:与对照组比较,模型组小鼠出现典型PD症状,黑质区TH阳性细胞数明显减少(P<0.01),FADD、FLIP及Caspase-3阳性细胞数明显增加(P<0.01),胞浆染色深;FADD、FLIP及Caspase-3蛋白表达水平升高(P<0.01)。与模型组比较,人参皂苷Rg1组小鼠PD症状减轻,黑质区TH阳性细胞数明显增多(P<0.01),FADD、FLIP及Caspase-3阳性细胞数明显减少(P<0.01),胞浆染色浅;FADD、FLIP和Caspase-3蛋白表达水平降低 (P<0.01)。FADD与Caspase-3阳性细胞数呈正相关关系(r= 0.791,P< 0.05)。结论:人参皂苷Rg1可通过影响PD模型小鼠黑质区FADD和FLIP的表达对DA能神经元起到一定的保护作用。  相似文献   

4.
目的探讨大鼠全脑缺血再灌注后皮质组织中HAX-1蛋白(HS1-associated protein X-1,HAX-1)与皮质神经元凋亡的关系。方法建立大鼠四血管法全脑缺血模型,将实验动物分为5组(n=5):正常组,缺血6、24、48、72h组。采用HE染色,观察大鼠皮层组织病理变化;采用免疫组化、TUNEL法检测大鼠全脑缺血再灌注后HAX-1蛋白的表达以及皮质神经元凋亡蛋白Caspase-3的表达情况。结果HAX-1蛋白在缺血后6h表达最高(37.60±3.45),24、48、72h降低[分别为(11.40±1.14)、(10.40±1.52)、(9.80±1.30)],且低于正常水平(P<0.01);Caspase-3蛋白随着缺血时间的延长逐渐增高[6、24、48、72h分别为(72.80±5.49)、(106.20±6.91)、(129.00±19.74)、(166.20±15.32)](P<0.01),并伴随神经元凋亡的数目逐渐增加[(92.00±9.06)、(133.80±10.64)、(157.00±10.83)、(187.80±14.96)]。结论全脑缺血再灌注后皮质神经元中HAX-1蛋白在短期...  相似文献   

5.
目的 探讨体外模拟缺血再灌注后大鼠皮质神经元内质网应激诱导凋亡的机制及丹红注射液对其的干预作用.方法 体外培养大鼠皮质神经元,神经元特异性烯醇酶(NSE)鉴定神经元纯度.建立体外培养大鼠皮质神经元模拟缺血再灌注模型,随机分为对照组(始终正常培养)、缺血再灌注组(体外模拟缺血再灌注)、治疗组(缺血再灌注加丹红注射液干预),应用免疫组织化学、免疫荧光染色方法鉴定神经元纯度;流式细胞术Annexin V、PI双标检测神经元凋亡率及活性半胱天冬酶(Caspase)-3、Caspase-8、Caspase-9蛋白表达;Western-blot免疫印迹分析法检测活性Caspase-12、葡萄糖调节蛋白78(GRP78)、Bcl-2及细胞色素C蛋白表达.结果 大鼠皮质神经元可纯化体外培养.皮质神经元体外模拟缺血6 h再灌注24、 48 h细胞凋亡率分别为(17.95±1.03)%、(22.62±0.98)%,丹红治疗组(8 mL/L)分别为(9.74±0.56)%、 (3.93±0.23)%,两组比较差异有统计学意义(χ2=7.164、10.650,P<0.05).体外模拟缺血再灌注诱导神经元GRP78表达上调,活性Caspase-12表达增加,但与治疗组比较差异无显著性(t=0.591、1.772,P>0.05).神经元缺血再灌注后细胞色素C表达增加,Bcl-2表达减少,活性Caspase-3、Caspase-8、Caspase-9表达增加,丹红注射液治疗后细胞Bcl-2表达增加,细胞色素C释放减少,活性Caspase-3、 Caspase-8、Caspase-9含量降低,两组比较差异有显著性(t=8.374~25.235,P<0.05、0.01).结论 内质网应激参与神经元体外模拟缺血再灌注后细胞凋亡,丹红注射液能抑制模拟缺血再灌注后细胞凋亡.  相似文献   

6.
目的:探讨缺血后处理对缺血/再灌注(I/R)损伤大鼠肾脏Fas,Bax和Bcl-2表达的影响.方法:将24只SD大鼠随机分为假手术(S)组、I/R组和缺血后处理(IPO)组,每组8只,分别建立动物模型.各组分别采用免疫组化和免疫印迹法检测肾脏Fas,Bcl-2和Bax蛋白的表达变化.结果:IPO组较I/R组Fas阳性染色指数和表达显著降低,分别为[(31.17±4.81)% vs (36.26±5.32)%.P<0.05)]和[(0.98±0.11)vs(1.28±0.19),P<0.05)];IPO组和I/R组Bcl-2阳性染色指数和表达分别为[(32.34±5.12)%vs(31.33±4.55)%.P0.05)]和[(1.03±0.17)vs(0.75±0.11),P<0.05)],Bax阳性染色指数和表达分别为[(25.60±3.79)%vs(29.67±4.34)%,P<0.05)]和[(0.59±0.08)vs(0.91±0.16),P<0.05)].结论:IPO可使Fas和Bax的表达减少,同时可使Bcl-2的表达增加,从而减少缺血再灌注损伤大鼠肾脏细胞的凋亡.  相似文献   

7.
目的:探讨肾缺血预处理(RIP)对兔未成熟心肌细胞凋亡和Bcl-2, Bax, Fas蛋白表达的影响. 方法:24只幼兔采用Langendorff离体心脏灌注模型,随机分为正常对照组(C)、心脏缺血/再灌注组(I/R)和肾缺血预处理组(RIP),每组8只,测定各组未成熟心肌细胞凋亡和Bcl-2, Bax, Fas蛋白表达. 结果:RIP组与I/R组比较,心肌细胞凋亡率明显减少[(4.19±1.13)% vs (12.30±2.10)%, P<0.01],DNA片段梯光密度明显减少(57 350±1765 vs 135 200±3370, P<0.01), Bcl-2表达增多(33 525±1026 vs 12 385±860, P<0.01), Bax(8640±768 vs 32 472±1128, P<0.01)和Fas(8936±912 vs 32 100±1260, P<0.01)表达明显减少. 结论:RIP可减少缺血再灌注后兔未成熟心肌细胞凋亡和影响Bcl-2, Bax, Fas蛋白的表达.  相似文献   

8.
目的:探讨高压氧(HBO)对兔颈内动脉和基底动脉内皮细胞 Caspase-3和 Bcl-2 mRNA 表达的影响。方法健康成年新西兰白兔24只,随机分为 HBO 组和对照组各12只。HBO 组每日持续暴露于2.2 ATA HBO 下60 min,连续3 d;对照组正常饲养,不予任何处理。实时荧光定量 PCR 法检测 Caspase-3、Bcl-2 mRNA 在2组颈内动脉和基底动脉内皮细胞的表达水平。结果HBO 可使颈内动脉内皮细胞 Caspase-3 mRNA 表达明显下降[(0.038±0.006)vs .(1.000±0.225)],Bcl-2 mRNA 表达明显增高[(1.877±0.169)vs .(1.000±0.364)];使基底动脉内皮细胞 Caspase-3 mRNA 表达明显降低[(0.419±0.091)vs .(1.000±0.175)],Bcl-2 mRNA 的表达明显升高[(1.269±0.270)vs .(1.000±0.117)],差异均有统计学意义(P <0.01)。结论HBO 对兔脑血管内皮细胞凋亡的发生有抑制作用,其机制可能与 HBO 对促凋亡基因 Caspase-3的抑制和抗凋亡基因 Bcl-2的促进作用有关。  相似文献   

9.
【目的】建立动物心脏缺血再灌注模型,观察缺血再灌注模型中泛素-26 S蛋白酶体系统活性及总泛素蛋白表达的变化,检测s RAGE对缺血再灌注泛素-26 S蛋白酶体系统活性及总泛素蛋白表达的影响。【方法】复制C57BL/6J小鼠心脏缺血再灌注模型,Evans blue/2,3,5-triphenyltetrazolium chloride(TTC)双染色检测心肌缺血范围;检测泛素-26 S蛋白酶体系统活性:糜蛋白酶样、半胱天冬酶样、胰蛋白酶样;通过Western blotting检测总泛素蛋白的表达。【结果】与假手术组比较,缺血再灌注组梗死区面积/危险区面积%明显增加(I/R:36.3%±2.3%vs.Sham:0%),泛素-26 S蛋白酶体系统活性明显降低(半胱天冬酶样:0.74±0.04 vs.1.00±0.07;胰蛋白酶样:0.61±0.05 vs.1.00±0.02;糜蛋白酶样:0.63±0.06 vs.1.00±0.07),总泛素蛋白表达水平明显升高(2.73±0.14 vs.1.00±0.05);与缺血再灌注组比较,s RAGE预处理能够明显降低梗死区面积/危险区面积%(I/R+s RAGE:18.0%±1.1%vs.I/R:36.3%±2.3%),明显升高缺血再灌注的泛素-26 S蛋白酶体系统活性(半胱天冬酶样:1.25±0.09vs.0.74±0.04;胰蛋白酶样:1.05±0.06 vs.0.61±0.05;糜蛋白酶样:1.12±0.06 vs.0.63±0.06),同时明显抑制缺血再灌注诱导的总泛素蛋白表达水平(2.17±0.09 vs.2.73±0.14)。【结论】s RAGE能够抑制缺血再灌注诱导的泛素-26 S蛋白酶体系统活性降低及总泛素蛋白表达的增加。  相似文献   

10.
目的 探讨对氧磷酶2(paraoxonase 2,PON2)在氧化低密度脂蛋白(oxidized low density lipoprotein,ox-LDL)诱导的乳鼠心肌细胞(neonatal rat ventricular cells,NRVCs)损伤中的作用及机制.方法 分离SD大鼠(出生1~3d,雌雄不限,共90只)心肌细胞.细胞分为:①对照组(未进行任何干预)、②0.1 μmol/Lox-LDL组(ox-LDL干预24 h)、③10 μmol/Lsalubrinal+ox-LDL组(salubrinal预处理1h后加入ox-LDL干预24 h)、④20 μg/mLPON2+ox-LDL组(PON2预处理1h后加入ox-LDL干预24 h)、⑤2.5μmol/LMn(Ⅲ)TBAP+ ox-LDL组[(Mn(Ⅲ)TBAP预处理1h后加入ox-LDL干预24 h].通过MTT法和Caspase-3/7活性检测试剂盒分别检测细胞活性和细胞凋亡变化(n=6);Western blot检测心肌细胞内质网应激和氧化应激蛋白表达情况(n=4).结果 与对照组相比,ox-LDL明显降低心肌细胞活性[(0.417 ±0.047) vs(O.883 ±0.064),P <0.01]显著增加心肌细胞凋亡[(11 505 ±817)vs(6417 ±439),P <0.01].与ox-LDL组相比,PON2、salubrinal和Mn(Ⅲ)TBAP干预后,细胞活性显著升高[(0.567 ±0.066) 、0.649 ±0.082) 、0.539 ±0.049) vs0.417 ±0.047),P <0.01],细胞凋亡显著下降[(7 776 ±488) 、(7 545 ±547)、(7 960±480)vs (11 505 ±817),P <0.01).与对照组相比,ox-LDL显著增加PON2蛋白表达[(0.86 ±0.223) vs (0.561 ±0.13),P <0.05]、内质网应激蛋白eIF-2αphox、caspase-12和氧化应激蛋白Nox2/gp91 phox、p47 phox表达[(1.309 ±0.274) vs (0.780 ±0.186) 、(1.294±0.273) vs (0.606 ±0.064) 、(1.342 ±0.274) vs(0.788 ±0.137) 、(1.178 ±0.194) vs (0.629 ±0.125),P<0.01].与ox-LDL组相比,PON2干预后,PON2蛋白表达明显升高[(1.190 ±0.151) vs (0.860±0.222),P<0.05];eIF-2αphox 、caspase-12、Nox2/gp91 phox和p47 phox蛋白表达明显降低[(0.924 ±0.170) vs(1.309 ±0.274) 、(0.895 ±0.202) vs (1.294 ±0.273) 、(0.957 ±0.190) vs (1.342 ±0.274) 、(0.799±0.232) vs(1.178 ±0.194),P <0.05].与PON2作用类似,salubrinal干预后,eIF-2αphox和caspase-12蛋白表达明显降低[(1.010±0.096) vs(1.309±0.274)、(0.788±0.042)vs(1.294±0.273),P<0.01],Mn(Ⅲ)TBAP干预后,Nox2/gp91 phox和p47 phox蛋白表达明显降低[(0.898 ±0.190) vs(1.342±0.274) 、(0.769±0.158) vs(1.178 ±0.194),P <0.01],二者均显著升高PON2蛋白表达[(1.248±0.259) 、(1.176 ±0.248) vs(0.860 ±0.222),P <0.05].结论 PON2可能通过代偿性升高抑制氧化应激和内质网应激而减轻ox-LDL诱导的心肌细胞损伤.  相似文献   

11.
CASE HISTORY A female patient, 46 years old, head of the foreign affairs department of a certain university in Beijing, paid her first visit on October 9, 2006, with the chief complaint of vomiting for one month. She got vomiting after meals in early September. Before that, she had discomfortable sensation in the stomach due to angry with others, but she didn't pay much attention. Later, it developed into vomiting after eating. After the vomiting, the discomfort would be relieved, but with slight hypodynamia. She was once diagnosed as having 'neurogenic vomiting'. Having taken some western and Chinese drugs, the above symptoms were a little bit improved, but she would have nausea upon eating and with regurgitation. Because of the fear for vomiting, she did not dare to have food intake, with body weight reduction of 6 kilos in one month.  相似文献   

12.
Radiotherapy and chemotherapy are the important modern medical therapies for malignant tumors,yet they can also bring about serious local and systemic toxic side reactions so to decrease the patient;'s life quality,manifested by a series of consumptive symptoms.Having engaged in the combined work of Chinese and western medicine for nearly 50 years,the research fellow Qiu Baoguo in Henan Provincial Academy of TCM has developed his unique views on the TCM study of consumptive syndromes.The author of this essay had once the fortune tO follow Dr.Qiu in clinic,and specially would like to introduce in the following Dr.Qiu's experience in treating consumptive syndromes after radio-chemotherapies for patients with malignant tumor.  相似文献   

13.
OBJECTIVE: To observe therapeutic effects of the comprehensive therapy of acupuncture-moxibustion and Chinese Tuina for treatment of insomnia due to deficiency of both the heart and spleen. METHODS: 92 cases were divided randomly into the treatment group (treated by acupuncture-moxibustion and Chinese Tuina) and the control group (treated by acupuncture-moxibustion). RESULTS: The therapeutic effect of the treatment group was obviously superior to that of the control group (the CHI2 test showed P < 0.01). CONCLUSIONS: The comprehensive therapy of acupuncture-moxibustion and Chinese Tuina can give marked therapeutic effects for treatment of insomnia due to deficiency of both the heart and spleen.  相似文献   

14.
15.
Objective: To investigate if there are the CK-19, PDX-1, Nestin, Ngn3 positive cells in the donor islets of different purity in rats. Methods: Thirty male adult SD rats were randomly divided into 3 groups. Islets were isolated using digestion by ductal injection of collagenase. Group Ⅰ (n=10): Separating cell preparations were not purified, Group Ⅱ(n=10): Islet sediment was purified with 25% Ficoll400 ,Group Ⅲ (n=10): Islet sediment was purified with 25% and 11% Ficoll-400. The levels of protein of CK-19, PDX-1, Nestin and Ngn3 were detected by immunohistochemistry and the mRNA of CK-19, PDX-1, Nestin, Ngn3 was amplified by RT-PCR. Results: After two different purification methods applied, three islet preparations of different purities were obtained. The difference of islet purity was significant among various groups (P<0.05). Compared with group Ⅱ and group Ⅲ,the protein and mRNA of CK-19, PDX-1, Nestin,Ngn3 were both higher in group Ⅰ; group Ⅲ was poorly expressed. Conclusions: The three different islet purity donor islet have different CK-19, PDX-1, Nestin, Ngn3 positive cells within them, indicating that there are some islet stem cells in the purified donor islet.  相似文献   

16.
Objective:To investigate the optimum screening conditions of associated proteins in human psoriasis vulgaris by serum proteomics technique, and to screen the different expression proteins related with psoriasis vulgaris. Methods:Serum samples of peripheral blood were collected from newly diagnosed psoriasis vulgaris patients in the clinic, and 20 matched healthy persons. Serum albumin IgG was removed by filtering with ProteoExtract Albumin/IgG. After comparative proteomics analysis the different protein spots were identified using 2-DE and MS. Results :Electrophoresis figures with high resolution and reproducibility were obtained. Three different expression proteins were found only in the serum from psoriasis vulgaris patients, while nine other different proteins expressing from healthy volunteers. Conclusion:The protein expression was different in the serum between the psoriasis vulgaris patients and healthy volunteers. It was hoped that we could find the biomarkers related to psoriasis vulgaris by using proteomics.  相似文献   

17.
PYTOBEZOARS are common bezoars in gastrontestinal tract, commonly seen in stomach and mall intestine,1but huge disopyrobezoars are  相似文献   

18.
CASE HISTORY A male,a retired officer of 61 years old,paid his first visit on May 12,2006.The patient stated that 2 weeks before he suddenly got paroxysmal precordial choking pain,with irregular attacks.Each attack would last several seconds to several minutes.The attack was accompanied with heavy oppressed sensation in the precordial region,palpitation,lassitude,and in severe cases,sweating,which was once diagnosed by a hospital as'coronary heart disease'.Recalling the case history,the patient said that several days before he got angry with others because of some affairs in work,and he was not so used to the life pattern since he had just retired from his busy working post.At usual times,he was quick tempered and peevish.In recent days,he had poor appetite,and loose stool.  相似文献   

19.
The English edition of Chinese Journal of Integrative Medicine is edited and published by the Chinese Journal of Integrated Traditional and Western Medicine Press.Original scientific papers of advanced clinical and experimental medicine in the field of complementary/alternative medicine or integrative medicine are expected.  相似文献   

20.
<正>As culture is the soul of a nation,the three books,"History of Chinese Philosophy,""History of Chinese Culture"and"History of Chinese Science and Technology"have demonstrated the superiority of our great Chinese culture,and its significant impact in the field of international culture.Both core value and practical value of the Chinese culture are very clear,reflected in the views of universe,nature,life,health,disease,and therapy and related considerations,concepts,and technical methods.  相似文献   

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