首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 62 毫秒
1.
目的研究黄芪提取物(EA)对大鼠全脑缺血再灌注炎症损伤的保护作用。方法采用大鼠四动脉结扎模型,观察EA对大鼠缺血再灌注大鼠神经功能学评分、血清IL-1β、IL-6、TNF-α含量及脑组织IL-1β、TNF-α的含量的影响。结果EA对全脑缺血再灌注24h后的大鼠神经功能有改善作用;EA能降低大鼠全脑缺血再灌注后血清IL-1β、TNF-α、IL-6和脑组织IL-1β、TNF-α的含量。结论EA对大鼠全脑缺血再灌注损伤有一定的保护作用,其机制可能与抑制IL-1β、TNF-α、IL-6的表达有关。  相似文献   

2.
目的:观察水蛭注射液对大鼠局灶性脑缺血再灌注损伤后TNF-α、IL-1β和ICAM-1表达的影响,以探讨水蛭注射液对脑缺血再灌注损伤的保护机制。方法:96只健康Wistar大鼠随机分为假手术组、模型组、丹参对照组、水蛭注射液组。采用线栓法制作大鼠脑缺血再灌注损伤模型,规定时间取脑标本,检测相关指标。结果:再灌注3h后脑组织TNF-α、IL-1β和ICAM-1含量明显升高,水蛭注射液可以明显降低脑组织TNF-α、IL-1β和ICAM-1含量(P〈0.01~0.05)。结论:水蛭注射液可降低炎性细胞因子TNF-α、IL-1β和ICAM-1的表达,抗脑缺血后炎症反应,从而起到脑保护作用。  相似文献   

3.
目的观察脑缺血预处理(CIP)后24、72、120、168h4个不同的时间点再次缺血损伤大鼠脑组织中白细胞介素-1β(IL-1β)、肿瘤坏死因子-α(TNF-α)、白细胞介素-10(IL-10)含量的变化趋势,探讨IL-1β、TNF-α、IL-10在脑缺血耐受中的作用。方法将大鼠随机分为6组:假手术组,缺血再灌注损伤组,CIP后24、72、120、168h再次损伤组。CIP各组先短暂阻断双侧颈总动脉10min作为缺血预处理,分别于缺血预处理后24、72、120、168h线栓法阻断大脑中动脉2h作为再次缺血损伤;缺血再灌注损伤组只阻断大脑中动脉2h;采用酶联免疫吸附试验(ELISA)测定各组大鼠脑组织匀浆中IL-1β、TNF-α、IL-10含量。结果与假手术组比较,缺血再灌注损伤组大鼠脑组织中IL-1β、TNF-α和IL-10含量均明显升高(P0.05);与缺血再灌注损伤组比较,CIP后24、72h再次缺血损伤组IL-1β含量明显升高(P0.05),120、168h再次缺血损伤组IL-1β含量逐渐降低;CIP后24、120h再次缺血损伤组TNF-α含量明显升高(P0.05),72、168h再次缺血损伤组TNF-α含量呈降低趋势;CIP后24、72h再次缺血损伤组IL-10含量明显升高(P0.01,P0.05),120h再次缺血损伤组IL-10呈降低趋势,168h再次缺血损伤组IL-10又明显升高(P0.05)。结论在CIP后24h脑组织中细胞因子IL-1β、TNF-α、IL-10水平明显升高能持续到72h(TNF-α除外),表明细胞因子作为触发物质,启动较早,刺激机体产生内源性的保护作用,对抗下次缺血带来的损伤,提高脑缺血耐受。  相似文献   

4.
目的研究永久脑缺血大鼠恢复期脑组织炎症因子动态变化规律及黄芩苷(BC)、栀子苷(GD)配伍的脑保护作用及其抗炎机制。方法 SD大鼠随机分为对照组(Con)、模型组(p MCAO)、BC∶GD(7∶3)30mg/kg、45mg/kg和60mg/kg组。线栓法建立永久中动脉闭塞模型,模拟脑缺血损伤恢复期病理过程,持续恢复3周,功能学评分观察模型动物7d、14d、21d的神经损伤情况,HE染色观察药物的脑保护作用,ELISA测定脑组织缺血半暗带区域TNF-α、IL-10、TGF-β、IL-10含量。结果黄芩苷、栀子苷灌胃给药7d-21d中均可以减少缺血区炎细胞浸润及组织水肿,降低神经功能学评分,下调TNF-α、IL-10,上调TGF-β、IL-10。结论黄芩苷与栀子苷配伍可以通过改善炎症损伤来减轻脑缺血损伤,并可调节炎性因子失衡。  相似文献   

5.
目的:探讨缺血预处理对大鼠脑缺血再灌注损伤的保护作用及其机制。方法:SD大鼠随机分为三组,分别为假手术组、脑缺血再灌注组、脑缺血预处理组。各组采用Zea-longa等的大脑中动脉线栓法并加以改进,制备缺血预处理及缺血再灌注损伤实验动物模型。比较各组神经功能缺失评分、脑梗死体积、血清NSE含量及脑组织IL-1β和TNF-α含量。结果:脑缺血预处理可使神经功能缺损减轻、脑梗死体积缩小、血清NSE含量降低,脑组织IL-1β和TNF-α含量降低。结论:缺血预处理可诱导脑缺血耐受作用的产生,下调脑组织再灌注损伤时IL-1β和TNF-α的表达,对脑缺血再灌注损伤具有保护作用。  相似文献   

6.
目的 探讨白介素-1β(IL-1β)、肿瘤坏死因子α(TNF-α)和细胞间黏附分子1(ICAM-1)在脑缺血—再灌注不同时期的基因表达.方法 将Wistar大鼠随机分为假手术组和脑缺血30 min再灌注6 h(IR6h)、12h(IR12h)、24 h(IR24h)、48 h(IR48h)组.动物模型采用线栓法制备大鼠中动脉栓塞法,用RT-PCR法检测脑缺血—再灌注不同时间点IL-1β、TNF-α及ICAM-1的表达.结果 IL-1β、TNF-α及ICAM-1在假手术组脑组织内低水平表达.IL-1β mRNA的表达在脑缺血—再灌注6h后即明显增高,12h后表达开始减弱,24~48 h呈低水平增高.TNF-α在脑缺血—再灌注6h表达开始上升,24 h达到高峰,48 h后开始下降.ICAM-1脑缺血—再灌注6h表达开始升高,24 h达到高峰,48 h后仍维持较高水平.结论 炎症因子参与了脑缺血—再灌注性损伤,且具有明显的时间规律.  相似文献   

7.
目的观察中风Ⅱ号对急性脑缺血大鼠脑组织血清肿瘤坏死因子-α(TNF-α)、白细胞介素—1β(IL-1β)含量的影响。方法将60只SD大鼠随机分为正常对照组、缺血组、中风II号低剂量组、中风II号高剂量组,线栓法制备大脑中动脉缺血(MCAO)模型,用双抗体夹心ELISA法测定大鼠血清TNF-α、IL-1β含量。结果中风II号低剂量组、高剂量组均能明显改善MCAO大鼠神经功能缺损评分,降低血清TNF-α、IL-1β含量,高剂量组作用更为明显。结论中风II号可通过抑制促炎细胞因子TNF-α、IL-1β的过高表达,抑制炎症级联反应,减轻急性脑缺血大鼠的炎症损伤。  相似文献   

8.
陈立英  苏立凯  廖仁昊  王敬 《医学综述》2006,12(17):1086-1088
目的探讨脑缺血预处理联合大黄素甲醚(Phy)治疗对大鼠脑缺血再灌注损伤的保护作用及其机制。方法SD大鼠随机分为四组,分别为假手术组、脑缺血再灌注组、脑缺血预处理组和Ply治疗组。各组采用Zea-longa等的大脑中动脉线栓法并加以改进,制备缺血预处理及缺血再灌注损伤实验动物模型。比较各组神经功能缺失评分、脑梗死体积、血清神经元烯醇化酯(NSE)含量及脑组织白细胞介素-1β(IL-1β)和肿瘤坏死因子-α(TNF-α)含量。结果脑缺血预处理联合Phy可使神经功能缺损减轻、脑梗死体积缩小、血清NSE含量降低,均较缺血预处理组更为明显。脑组织IL-1β和TNF-α含量降低亦更为明显。结论Phy可增强缺血预处理诱导的脑缺血耐受作用,下调脑组织再灌注损伤时IL-1β和TNF-α的表达,二者具有叠加作用。  相似文献   

9.
目的观察大鼠脑缺血再灌注损伤后细胞间黏附分子-1(ICAM-1)、肿瘤坏死因子-α(TNF-α)在脑缺血再灌注损伤不同时间段的表达规律,探讨ICAM-1、TNF-α在脑缺血再灌注损伤中的关系.方法采用大鼠局灶性脑缺血再灌注损伤模型,大鼠大脑中动脉阻塞2 h,分别再灌注2、6、12、24、48、96h,免疫组织化学法测定ICAM-1、TNF-α表达水平.并设正常组、假手术组及永久缺血组对照.结果ICAM-1的表达永久缺血组、缺血再灌注组ICAM-1明显高于正常对照组和假手术组(P<0.01);与永久缺血组比较,缺血再灌注组除再灌注2 h时段外,ICAM-1表达明显增高(P<0.05);脑缺血再灌注2 h组局部脑组织ICAM-1的表达于再灌注48h达到峰值,再灌注96h仍保持较高水平.TNF-α的表达缺血再灌注组大鼠缺血侧半球TNF-α的表达于再灌注2 h开始升高,再灌注12 h,阳性细胞显著增多,24h达到高峰,其后逐渐下降,96h达基础水平;缺血再灌注组TNF-α的表达较正常组、假手术组有显著差异(P<0.01),比永久缺血组TNF-α阳性细胞低,但无统计学意义(P>0.05).缺血再灌注组TNF-α的表达与ICAM-1的表达在24、48、96h时间段呈正相关(r分别为0.765、0886、0.787,P<0.05);TNF-α的表达早于ICAM-1的表达,且TNF-α与ICAM-1表达部位相同.结论大鼠脑缺血再灌注损伤后,ICAM-1、TNF-α参与了脑缺血后的炎症反应,且二者有明显的相关性TNF-α可能诱导了ICAM-1的上调,在神经元迟发性坏死中起着重要作用.  相似文献   

10.
目的 探讨阿托伐他汀对大鼠局灶性脑缺血/再灌注损伤的保护作用.方法 采用Longa等方法制作大鼠大脑中动脉局灶性脑缺血/再灌注损伤模型.60只雄性SD大鼠随机分为3组,假手术组(SH组),脑缺血/再灌注组(ISC组)和阿托伐他汀预处理组(LipPC组),在缺血/再灌注前按6 mg/(kg·d)给阿托伐他汀14 d.各组又按再灌注后6 h和24 h分成两个亚组,每个亚组10只.各组在相应时间点进行神经功能评分,测定脑梗死体积、血清神经元稀醇化酶(NSE)含量、脑组织TNF-α和IL-1β的含量.结果 LipPC组各时间点梗死体积比ISC组显著缩小(P<0.05),神经功能评分明显改善(P<0.05),血清NSE、脑组织TNF-α和IL-1β生成减少(P<0.05或P<0.01).结论 缺血前给予阿托伐他汀可减轻缺血/再灌注后的炎症级联反应,对大鼠局灶性脑缺血/再灌注损伤有一定的保护作用.  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   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号