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1.
目的研究针刺对小鼠腹腔巨噬细胞的热休克蛋白(HSP)、诱导性一氧化氮合酶(iNOS)及其mR-NA表达的效应。方法将24只昆明小鼠腹腔注射无菌石蜡油后,随机分为3组:电针(EA)组、对照1(C1)组和对照2(C2)组。将3组收集的腹腔巨噬细胞制备成玻片和硝酸纤维素膜(NCM)两种标本,应用原位杂交、免疫细胞化学、细胞化学及斑点印迹技术检测HSP70、iNOS及iNOSmRNA。结果HSP70定位于巨噬细胞的胞质和胞核;iNOSmRNA及iNOS均定位于巨噬细胞的胞质;3组的iNOSmRNA、iNOS、HSP70的斑点印迹的扫描数值均为EA组>C2组>C1组(P<0.01)。结论电针可显著提高小鼠腹腔巨噬细胞的HSP70、iNOS及iNOSmR-NA表达。  相似文献   

2.
目的 观察人血清补体C5b-9复合物对大鼠肾小球系膜细胞(MC)表达诱生性一氧化氮合酶(iNOS)mRNA的影响。方法 首先提取人血清补体C5b-9复合物,然后用人C5b-9复合物刺激培养的大鼠MC,检测MC在受C5b-9复合物刺激后3、6、24和48h时iNOS mRNA的表达情况。同时检测其培养上清液中一氧化氮(NO)代谢产物-硝酸根(NO3^-)和亚硝酸根(NO2^-)含量的变化。结果 用人  相似文献   

3.
LPS、rhlL-1β、rhIL-6、rhThF-a和rhIFN-γ单独或两两组合加于培养的人血管平滑肌细胞(hVSMC),测定了hVSMCNOS活性,cGMP含量,iNOSmRNA表达丰度和培养液中NO2浓度。LPS和细胞因子都能诱导hVSMC表达iNOS mRNA,升高hVSMC NOS活性、cGMP含量和培养液中NO2浓度;TNF-a是受试细胞因子中唯一能与另外三种细胞因子分别组合都显示出协同效应的细胞因子;LPS和其余三种细胞因子间的两两组合都没有显示出协同效应;本研究结果表明:LPS、rhTNF-α、rhIL-1β、rhIL-6、thThF-α、thIFN-γ都能诱导hVSMC合成NO;TNF-α可能是诱导hVSMCiNOS表达的致炎细胞因子中最为重要的。  相似文献   

4.
目的:为了探讨一氧化氮合成酶在CD23白血病细胞的表达,以及CD23与NO的关系。方法:采用CRT-PCR和FACS技术及Western-blotting放射自显影方法。结果:发现CD23白血病细胞株可以表达iNOSmRNA和iNOS蛋白,同时CD23可上调iNOS的表达。结论:iNOS可能与人CD23白血病细胞的增殖和凋亡有关。  相似文献   

5.
Tsogoev AS  郑刚  吴景兰  王红梅 《解剖学报》2001,32(1):68-71,T017
目的 为了探讨针刺镇痛效应与细胞免疫的关系,研究了针刺对小鼠巨噬细胞中c-fos mRAN ppENKmRNA,iNOSmRNA及iNOS活性的效应。方法 20只BALB/c小鼠被随机分成2组;a.用5Hz电针处理的针刺组;b.未用电针处理的对照组。针刺或牵拉前后用钾离子渗透法检测痛阈。实验采用原位杂交,NADPHNBT组织化学,RNA斑点印迹及蛋白质斑点印迹技术。应用TLC扫描仪扫描斑点印迹信号并作统计学处理。结果 杂交信号和iNOS活性呈现蓝紫色,信号均定位于巨噬细胞的胞质。与对照组相比,针刺组的所有印迹信号均增强,P〈0.01。针刺组中c-fos mRNA,ppENKmRNA,iNOSmRNA的表达及iNOS的活性与提高的痛阈呈正相关。此外,c-fos mRNA与mRNA与ppENKmRNA之间的变动呈正  相似文献   

6.
红藻氨酸致大鼠脊髓损伤过程中c—fos mRNA和Fos的表达变化   总被引:2,自引:0,他引:2  
米瑞发  周长满 《解剖学报》1997,28(2):151-156
为探讨即早反应基因在神经损伤过程中的变化规律,用原位分子杂交和PAP免疫组织化学方法观察了大鼠脊髓内注射红藻氨酸后1h至14d的不同时间点,L1-3脊髓腹,背角神经元中c-fos mRNA和Fos免疫阳性信号的变化。结果表明,KA致脊髓损伤后2-8h脊髓腹角运动神经元中c-fos mRNA的表达和Fos免疫组织化学阳性反应明显增加,12h恢复至正常水平,伤后3d又明显增强;而脊髓背角神经元内仅在伤  相似文献   

7.
目的:探讨无氧(O%O2+95%N2+5%CO2)和低氧(25~3%O2+92%N2+5%CO2)对新生小牛肺动脉内皮细胞(PAEC)和肺动肺平滑肌细胞(PASM)5-羟色胺转载体基因表达的影响。方法:应用细胞培养,核酸分子杂交技术。结果:无氧组和低氧组(15h、3h、6h)PAEC5-羟色胺转载体mRNA表达显著高于常氧组(P<005),而无氧和低氧12h至48h对PAEC5-羟色胺转载体mRNA表达无明显影响。无氧和低氧(3h、6h、12h、24h)组PASM5-羟色胺mRNA表达均显著高于常氧组(P<001),结论:推测缺氧早期通过促进PAEC5-羟色胺转载体基因表达,加强PAEC对5-羟色胺的摄取和降解,随缺氧时间的延长,PAEC的此功能受损。缺氧PASM5-羟色胺转载体基因表达的持续增加,则可能参与缺氧肺动脉高压的形成。  相似文献   

8.
目的:探讨Gq蛋白介导血管活性多肽对vSMCDNA合成及增殖细胞核抗原(PCNA)蛋白表达的影响。方法:用硫代修饰的Gαq/11亚基反义寡聚脱氧核苷酸(Gαq/11AS-ODNs),以6μmol/L的浓度加入含10-7mol·L-1ET-1刺激无血清DMEM培养基中体外培养vSMC。用3H-TdR掺入法测定vSMCDNA合成、免疫细胞化学技术检测vSMCPCNA蛋白表达。结果:Gαq/11AS-ODNs可明显抑制vSMCDNA的合成,在12h,24h时抑制率分别为842%和853%;Gαq/11AS-ODNs亦明显降低vSMCPCNA蛋白的表达。而相同浓度的正义Gαq/11ODNs只呈现少量抑制作用。结论:本实验提示Gαq/11AS-ODNs有可能进一步应用于由血管活性多肽刺激引起的vSMC增生性疾病如经皮冠脉腔内血管成形术(PTCA)后再狭窄的防治的研究  相似文献   

9.
目的:探讨NFкB在大鼠肺微血管内皮细胞iNOS基因诱导表达中的作用及抗氧化睦内皮细胞iNOS诱导表达的影响及其机制。方法:Griess法测定细胞上清液NO2水平以反映NO的生成,Nrthern印迹分析iNOSmRNA水平,EMSA法测定细胞核内NFкB的结合活性。结果:抗氧化可阻断内皮细胞培养体系LPS和TNFα诱导的NO生成及iNOSmRNA的表达;LPS和TNFα可诱导大鼠肺微血管内皮细胞N  相似文献   

10.
探讨72例确诊呼吸道合胞病毒(RSV)特异性血清抗体及鼻咽分泌物脱落细胞中RSV抗原阳性患儿急性期及恢复期T淋巴细胞亚群,血清IgG、IsM、IgA及IL-2R的活性表达,动态观察了呼吸道合胞病毒感染患儿急性期、恢复期和正常对照组外周血淋巴细胞经PHA刺激后,于不同时间(24h、48h、72h)细胞膜上IL-2R的活性表达。结果表明,抗体效价恢复期较急性期升高4~128倍,病例组急性期CD3、CD16、B细胞升高,CD4/CD8的比值下降,IgG、IgA均降低,而IL-2R的活性表达呈下降趋势。此结果有助于探讨RSV感染患儿的免疫紊乱发生机制。  相似文献   

11.
Renal dysplasia and asplenia in two sibs   总被引:2,自引:0,他引:2  
A family is reported in which two sibs, one male and the other female, both died within 24 hours of birth with enlarged polycystic kidneys. Postmortem histology in the second child showed gross renal dysplasia. In both children the pancreas was enlarged, nodular and cystic but the liver appeared macroscopically normal. In the second child, histological examination confirmed pancreatic fibrosis with cystic dilation of ducts, but showed portal fibrosis with bile duct proliferation in the liver.
This combination of findings is very reminiscent of those in a girl and her brother reported by Ivemark et al. (1959). The children reported here also showed absence or hypoplasia of the spleen, cardiac anomalies and other features of the Ivemark syndrome (Ivemark 1955), a quite different, usually sporadic, congenital disorder. It is suggested that the children described here have a distinct lethal congenital disorder, probably inherited in an autosomal recessive manner.  相似文献   

12.
Over 200 schizophrenic patients belonging to three major and interrelated pedigree complexes have been investigated over the past 30 years in a North Swedish geographically isolated population, presently numbering about 6,000. An intensive investigation of a number of biochemical correlates and genetic markers in a few selected families belonging to one of the major pedigrees has indicated new strategies for the current research program.
Schizophrenia, as defined operationally, is significantly associated with decreased activities of two enzymes (1) blood platelet monoamine oxidase, (2) plasma dopamine-β-hydroxylase, and (3) with the genetic marker Gc2 (group specific antigen). Both enzymes are subject to genetic variation. A positive score for linkage between schizophrenia and low plasma DBH activity has been calculated, but, so far, available data are insufficient for discrimination between linkage and partial contribution of genetically controlled low plasma DBH to the pathogenesis of the disease. Alternatively, both mechanisms could be involved.
As a model for continued research, schizophrenia is explained as based on a double dominant-recessive genotype (Aabb), representing a vulnerability which in about 50 % of cases develops into clinical schizophrenia. It is suggested that the dominant mutation (A) operates on or affects MAO activity, and that the recessive genotype (bb) is instrumental in low variates of DBH activity and very likely such variates within the normal range of physiological variation. Moreover, it is suggested that the combined effects of MAO- and DBH-reduced efficiency on the metabolism of e.g. dopamine could be an essential pathogenic mechanism for the schizophrenic illness which is segregating in this population.  相似文献   

13.
There are an estimated over 200 million yearly cases of malaria worldwide. Despite concerted international effort to combat the disease, it still causes approximately half a million deaths every year, the majority of which are young children with Plasmodium falciparum infection in sub-Saharan Africa. Successes are largely attributed to malaria prevention strategies, such as insecticide-treated mosquito nets and indoor spraying, as well as improved access to existing treatments. One important hurdle to new approaches for the treatment and prevention of malaria is our limited understanding of the biology of Plasmodium infection and its complex interaction with the immune system of its human host. Therefore, the elimination of malaria in Africa not only relies on existing tools to reduce malaria burden, but also requires fundamental research to develop innovative approaches. Here, we summarize our discoveries from investigations of ethnic groups of West Africa who have different susceptibility to malaria.  相似文献   

14.
Most bodily functions require the coordinated actions of complementary and supplementary paired muscle groups. Where this essential muscular cooperation is lacking, hollow organs may burst and others become literally screwed up, giving rise to many similar spastic diseases such as Torticollis, Twisted ovarian cyst, Torsion of the Testis, Volvulus of the intestines, Varicose Veins, Megacolon, Aortamegaly, Scoliosis, Erb's Palsy, Peyronie's Disease, Main-en-Griffe, Undescended Foot (Pes Cavus), Talipes, Strabismus. Spasm is “panenepidemic” and unclassified examples of Torsion Dystonia and Dyskinesia really are as common as debt and taxes.  相似文献   

15.
About 1900, modern food selection and processing caused widespread epidemics of the B vitamin deficiency diseases of beriberi and pellagra which, for genetic reasons, often expressed as different diseases ranging from bowel and heart disease to dermatoses and psychoses. But the B vitamins merely help convert essential fatty acids (EFA) into the prostaglandin (PG) tissue regulators and it now turns out that, through hydrogenation, milling and selection of w3-poor southern foods, we have also been systematically depleting, by as much as 90%, a newly discovered trace Nordic EFA (w3) of special importance to primates and sole precursor of the PG3(4) series, even as a concurrent fiber deficiency increases body demand for EFA. Since substrate EFA is processed by many B vitamin catalysts, an EFA deficiency will mimic a panhypovitaminosis B, i.e., a mixture of substrate beriberi and substrate pellagra resembling vitamin beriberi and pellagra but exhibiting as even more diverse endemic disease. This would consitute a second stage of the Modern Malnutrition and explain why some workers now hold the dominant diseases of modermized societies to be new, nutritionally based, pellagraform yet lipid-related and to range, once again, from heart disease to psychosis. It is an assumption that our dominant diseases are unrelated to each other or are merely revealed by our diagnostic acumen and therapeutic success; and that hydrogenating millions of tons of food oils annually, to destroy the rancidity producing w3-EFA, is safe for primates. Extensive beriberiform disease is reported here in 32 typical cases taken from medical practice which responds strikingly to linseed oil supplements (60% w3-EFA) in confirmation of identical results in Capuchins.  相似文献   

16.
Zusammenfassung Eine Reihe pathologischer Zustände bedingen Magnesiummangel. Zustände mit Hypermagnesämie sind ebenfalls bekannt, doch wesentlich seltener. Für den Kardiologen beachtenswert ist, daß unter Therapie mit bestimmten Diuretica bei Herzinsuffizienz, bei Herzinfarkt, Kardiomyopathie, Digitalisintoxikation und bestimmten Herzrhythmusstörungen Hypomagnesämie beobachtet wurde. Leider kann in der klinischen Routine nur ein extracelluläres Magnesiumdefizit durch Serumbestimmungen gemessen werden; über Magnesiummangel einzelner Organe kann nichts ausgesagt werden. Hinweise für Magnesiummangel geben aber neben der Messung des Serumspiegels Anamnese, klinischer Befund, bestimmte EKG-Veränderungen wie auch evtl. Hypokalämie, ein Zustand, bei dem sich oft — besonders bei Aldosteronismus — parallele Veränderungen zeigten.Tierexperimente deuten darauf hin, daß infarktähnliche Läsionen unter Magnesiummangel entstehen, doch ob Herzinfarkt beim Menschen durch Magnesiummangel ausgelöst werden kann, ist noch ungeklärt. In Leichenherzen zeigte sich im Infarktgebiet neben Calciumakkumulation signifikanter Magnesiumverlust, wobei unklar blieb, ob sich Ursache oder Folge des Infarktes widerspiegelten. Falls ein ursächlicher Zusammenhang besteht, ist er im Myokardstoffwechsel selbst zu suchen, wie bei der Alkoholkardiomyopathie, wo myokardialer Magnesiummangel zumindest als pathogenetischer Teilfaktor anerkannt wird. Andererseits versucht man aber auch Beziehungen zwischen Atherosklerose, Blutgerinnung und Hypomagnesämie herzustellen, in der Meinung, daß Magnesiummangel auch über den coronaren Pathomechanismus des Herzinfarktes wirken könnte. Sicher scheint, daß gewisse EKG-Veränderungen und Herzrhythmusstörungen durch einen irritierten Magnesiumhaushalt bedingt sein können, da sie bei Gabe bzw. Entzug von Magnesium verschwinden. Daß Magnesiummangel die Glykosidtoleranz verringert, wird tierexperimentell bestätigt. Unter Hypomagnesämie bewirkt Acetylstrophanthidin eher und länger Rhythmusstörungen als ohne, außerdem lassen diese sich durch Magnesiumgaben eliminieren. Da in gewissen Fällen spontane und digitalisinduzierte Herzrythmusstörungen durch Magnesiuminjektionen beseitigt wurden, scheint Magnesium als Therapeuticum angebracht. Einsatz verschiedener Magnesiumsalze bei Angina pectoris, degenerativen Herzerkrankungen und Herzinsuffizienz ohne geprüften und offensichtlich gestörten Magnesiumhaushalt ist fragwürdig, weil keine eindeutigen klinischen Erfolgsbeweise vorliegen. Immerhin mag es aber larvierte, durch Serumbestimmungen nicht erfaßbare Mangelzustände geben. Allgemein erscheint es aus kardiologischer Sicht ratsam, den Magnesiumhaushalt zu überwachen und in entsprechenden Fällen auszugleichen, um möglichen Myokardläsionen oder fatalen Herzrhythmusstörungen entgegenzuwirken.  相似文献   

17.
18.
Introduction: The etiology of atopic dermatitis (AD) is multifactorial with interaction between genetics, immune and environmental factors.

Areas covered: We review the role of prenatal exposures, irritants and pruritogens, pathogens, climate factors, including temperature, humidity, ultraviolet radiation, outdoor and indoor air pollutants, tobacco smoke exposure, water hardness, urban vs. rural living, diet, breastfeeding, probiotics and prebiotics on AD.

Expert commentary: The increased global prevalence of AD cannot be attributed to genetics alone, suggesting that evolving environmental exposures may trigger and/or flare disease in predisposed individuals. There is a complex interplay between different environmental factors, including individual use of personal care products and exposure to climate, pollution, food and other exogenous factors. Understanding these complex risk factors is crucial to developing targeted interventions to prevent the disease in millions. Moreover, patients require counseling on optimal regimens for minimization of exposure to irritants and pruritogens and other harmful exposures.  相似文献   


19.
《Human immunology》2022,83(11):739-740
Georgia (or Sakartvelo in its own language) is a South Caucasus Mts. country with its easternmost part is enigmatically named Iberia, like the Iberian Peninsula, which may refer to rivers “Kura” and “Ebro” or their valleys respectively. Most of their inhabitants speak Georgian which is included within Dene-Caucasian group and Usko-Mediterranean subgroup of languages. The latter includes Basque, Berber, ancient Iberian-Tartessian, Etruscan, Hittite, Minoan Lineal A and others. In the present paper, HLA class II -DRB1 and -DQB1 alleles has been studied and extended haplotypes calculated. Most frequent haplotypes are also of Mediterranean origin (i. e.: (A*02-B*51)-DRB1*11:01-DQB1*03:01, (A*02-B*51)-DRB1*13:01-DQB1*06:03, or (A*24-B*35)-DRB1*01:01-DQB1*05:01) and DA genetic distances show that closest world populations to Georgians are Mediterraneans. Georgians also show common extended haplotypes ((A*02-B*51)-DRB1*11:01-DQB1*03:01, (A*02-B*13)-DRB1*07:01-DQB1*02:01 and (A*03-B*35)-DRB1*11:01-DQB1*03:01) with Svan people, a secluded population in North Georgia mountains. We can conclude that Georgians belong to a very old Mediterranean substratum according to both linguistics (Usko Mediterranean languages) and HLA genetics.  相似文献   

20.
《Human immunology》2020,81(5):193-194
Huastecos or Teenek Amerindians are presently living at North East Mexico (San Luis Potosi State). They have probably one of the most ancient culture of Mexico and Central America together with Mayas and Olmec groups with which also show close relationships. Proximity to Atlantic Ocean/Mexican Gulf originated that Spaniards had very early contact with them at about 1519 CE or before. In the present paper we have aimed to study HLA gene profile which may be useful for HLA and disease epidemiology and transplant programs in Teeneks. HLA-DRB1*04:07, -DRB1*14:06 and -DRB1*04:11 have been found in high frequency like in other Amerindian groups. High frequency typical Amerindians HLA extended haplotypes have been found, such as A*02-B*35-DRB1*04:07-DQB1*03:02; A*68-B*39-DRB1*04:07-DQB1*03:02 and A*02-B*39-DRB1*04:07-DQB1*03:02; also new haplotypes have been described, like A*02-B*52-DRB1*04:11-DQB1*03:02, A*68-B*35-DRB1*14:02-DQB1*03:01 and A*68-B*40-DRB1*16:02-DQB1*03:01. Genetic proximity is observed not only to linguistically close Mayans, but also to Mazatecans, Mixtecans and Zapotecans, who speak an altogether different languages; it shows once more that genes and languages do not correlate. This population was greatly diminished after European contact between 1500 and 1600 years CE; in fact, North and South America First Inhabitants population was brought from 80 down to 8 million people because of diseases (i.e.: measles, smallpox or influenza), slavery and war.  相似文献   

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