miRNA-145在肺腺癌组织中表达及意义

目的 分析微小核糖核酸-145(microRNA-145,miRNA-145)在肺腺癌组织中的表达情况及其临床意义.方法 收集68例于我院接受手术治疗的肺腺癌患者的肺腺癌组织及癌旁组织标本,提取总RNA,采用实时荧光定量反转录-聚合酶链反应法(RT-PCR)测定肺腺癌患者癌组织及癌旁组织miRNA-145表达,分析其生物学功能.结果 ① 肺腺癌患者癌组织miRNA-145相对表达量低于癌旁正常组织,对比差异具有统计学意义(P<0.05);② 不同性别、不同年龄、有无吸烟史、肿瘤大小不同的肺腺癌患者miRNA-145相对表达量对比差异无统计学意义(P>0.05),临床分期为Ⅲ-Ⅳ期、合并淋巴结转移的肺腺癌患者癌组织miRNA-145相对表达量低于Ⅰ-Ⅱ期患者(P<0.05),低分化、中分化肺腺癌患者癌组织miRNA-145相对表达量低于高分化患者(P<0.05),低分化患者癌组织miRNA-145相对表达量又高于中分化患者,对比差异均有统计学意义(P<0.05).结论 肺腺癌患者癌组织miRNA-145相对表达量低于癌旁正常组织,临床分期越高、分化程度越低的伴淋巴结转移的肺腺癌患者癌组织miRNA-145表达水平越低.     

肺鳞癌组织miRNA-29b表达及预后相关性研究

目的探讨miRNA-29b在可手术的肺鳞癌组织中的表达及其与转移及预后的关系。方法回顾性分析2006年6月至2013年12月间武警总医院与中国医科大学附属第一医院62例肺鳞癌手术患者的临床资料,采用RT-PCR方法检测上述病例肺鳞癌组织标本中miRNA-29b的表达水平,根据miRNA-29b相对表达量进行实验分组。应用x~2检验分析miRNA-29b表达与肺鳞癌患者转移的关系,应用Kaplan-Meier方法分析miRNA-29b表达与生存的关系,应用Cox风险比例模型分析miRNA-29b表达与预后的关系,应用Western blot分析肺鳞癌组织标本中胰岛素样生长因子-1(IGF1),分析miRNA-29b与IGF1表达的相关性。结果肺鳞癌组织中miRNA-29b的表达量显著低于正常肺组织,与转移相关(P0.05),低表达组生存期较高表达组明显缩短(P0.01),miRNA-29b表达可作为肺鳞癌患者预后的独立影响因素。IGF1在肺鳞癌组织标本中的表达显著高于正常肺组织(P0.01)。结论 miRNA-29b低表达与非小细胞肺癌转移及生存期相关,miRNA-29b表达与IGF1的表达呈显著负相关。     

肺腺癌中miRNA34a和c-myc的表达及意义

目的检测肺腺癌组织中miRNA34a,癌基因c-myc的表达,探讨两者之间的关系及意义。方法采用qRT-PCR法检测mRNA miRNA34a,Western blot、免疫组化法检测c-myc蛋白在正常肺组织、癌旁肺组织、肺腺癌以及转移癌组织中的表达。结果(1)miRNA34a在肺腺癌组织中呈低表达,低于癌旁和正常肺组织(P0.01),高于转移癌组织(P0.01)。c-myc在肺腺癌组织中呈高表达,高于癌旁和正常肺组织(P0.01),低于转移癌组织(P0.01)。miRNA34a及c-myc在癌旁组织和正常肺组织之间的表达差异有统计学意义(P0.05)。(2)病理类型:miRNA34a及c-myc在低分化和高分化肺腺癌之间的表达差异均无统计学意义(P0.05)。两者在转移癌与非转移肺腺癌组织中的表达差异有统计学意义(P0.05)。(3)预后分析:cmyc阳性组的肺腺癌患者生存率低于阴性组(P0.05),miRNA34a低表达组患者的生存时间明显低于高表达组,差异有统计学意义(P0.01)。结论肺腺癌组织中miRNA34a的表达与c-myc蛋白表达呈负相关。c-myc高表达miRNA34a低表达提示患者预后不良。     

pEZR~(Thr567)在肺鳞癌中的表达及临床病理学意义

目的:探讨第567位苏氨酸磷酸化的埃兹蛋白(p EZRThr567)在肺鳞癌、癌旁及正常肺组织中的表达及其临床病理学意义。方法:用免疫组化法检测p EZRThr567在肺癌、癌旁及正常肺组织中的表达,并分析其异常表达与临床病理学特点之间的相关性;用免疫荧光染色法检测p EZRThr567在肺鳞癌细胞EBC-1中的定位情况。结果:p EZRThr567蛋白在肺鳞癌组织中的表达明显高于癌旁组织和正常肺组织(P0.01);p EZRThr567蛋白主要表达于细胞膜,且其表达与肿瘤分化程度、临床分期和有无淋巴结转移密切相关(P0.05)。结论:p EZRThr567蛋白可作为肺鳞癌恶性进展的有效分子指标。     

胰岛素样生长因子2 mRNA结合蛋白3在肺鳞癌的表达及预后分析

目的 探讨胰岛素样生长因子2 mRNA结合蛋白3(IMP3)在肺鳞癌中的表达及评价预后的意义.方法 应用免疫组化染色,检测92例肺鳞癌及癌旁组织中IMP3蛋白的表达,结合临床病理学指标及总生存期进行统计学分析.结果 肺鳞癌组织中IMP3阳性表达率明显高于癌旁正常组织(x2=70.145,P＜0.01),IMP3蛋白在肺鳞癌中的表达与组织分化程度低、有转移以及病理分期高密切相关(x2分别为9.811、11.926和7.136,P＜0.01);癌组织中IMP3蛋白的表达与患者术后总生存期呈负相关(Log-rank=23.889,P＜0.01),IMP3阳性表达是预后的独立风险因素(风险比:0.436,95％置信区间:0.247 ～0.768,P＜0.01).结论 IMP3表达的肺鳞癌预后较差,可作为新的肺鳞癌标记物.     

Nrf2在食管鳞癌组织中的表达及意义

目的:探讨Nrf2(Nuclear factor E2 p45-related factor2)在食管鳞癌组织中的表达及其与临床病理学特征的关系。方法:采用免疫组化SP法检测Nrf2在32例食管鳞癌,30例癌旁组织,21个阳性淋巴结和24个阴性淋巴结组织中的表达。结果:Nrf2阳性表达主要定位于细胞核中,在食管鳞癌中的阳性表达率为78.13%,显著高于癌旁组织(13.33%),淋巴结癌转移阳性组织中的表达率(66.67%)也显著高于淋巴结癌转移阴性组织中的表达水平(20.83%),均具有统计学意义(P<0.05)。Nrf2的阳性表达随淋巴结的转移度的增加而表达增加(P<0.05),但在不同年龄、性别、TNM分期、肿瘤分化程度及不同部位之间差异无统计学意义。结论:Nrf2在食管鳞癌中高表达,表达的高低与淋巴结转移与否及转移度有关。     

Expression of E-cadherin in lung cancer and its point mutation

目的:探讨上皮钙黏蛋白在肺腺癌及腺鳞癌组织中的表达以及该基因发生点突变与肺癌发生的关系.方法:采用免疫组织化学检测31例肺癌临床标本及13例癌旁肺组织中上皮钙黏蛋白的表达；PCR法检测上皮钙黏蛋白基因7号和9号染色体点突变在25对肺癌组织及配对的癌旁肺组织中的表达.结果:上皮钙黏蛋白在肺腺癌和腺鳞癌组织中的阳性表达率低于癌旁组织26.56％,其表达在低分化肺癌组织中较高分化和中分化肺癌组织中下调约40％,在转移组中比未转移组中低18.5％；肺癌组织与配对的癌旁肺组织中上皮钙黏蛋白基因7号染色体点的突变率均为52％,9号染色体的点突变率分别为64％和60％,两者无差异.结论:上皮钙黏蛋白表达下调与肺癌发生相关,且其表达随着肺癌分化程度降低及发生转移而下调；肺癌组织中上皮钙黏蛋白基因发生了突变,但基因突变不是引起上皮钙黏蛋白在肺癌组织中下调的唯一因素.     

miRNA-212在乳腺癌的表达及其与临床病理特征的关系

目的分析miRNA-212在乳腺癌中的表达及其与临床病理特征的关系。方法选择90例乳腺癌患者的手术标本(癌组织及其癌旁组织)提取总RNA,采用TaqMan探针逆转、实时定量PCR检测miRNA-212在乳腺癌及其癌旁正常组织中的表达量,并分析其与临床病理特征关系。结果乳腺癌组织miRNA-212表达量为3.06(0.146-10.274),与癌旁正常组织相比显著上调;miRNA-212的表达与TNM分期相关,TNM分期越高,miRNA-212表达越高;miRNA-212的表达也与淋巴结转移相关,淋巴结转移患者miRNA-212表达增加。结论miRNA-212表达上调可能与乳腺癌的发生及其转移有关。     

非小细胞肺癌中S100A2、S100A4及S100P表达及意义

目的研究钙结合蛋白S100家族中S100A2、S100A4及S100P基因在非小细胞肺癌(non-small cell lung cancer,NSCLC)中的表达,阐明其与肺癌发生及转移的关系。方法以12例正常肺组织为对照,采用半定量RT-PCR技术检测17例腺癌和12例鳞癌及其癌旁组织中S100A2、S100A4及S100P mRNA的表达水平。结果(1)S100A2、S100A4及S100P mRNA在NSCLC中的表达量均高于癌旁和正常组织。(2)肺腺癌中三者mRNA表达量均高于癌旁和正常组织;肺鳞癌中S100A4和S100P mRNA的表达量高于正常组织。(3)根据不同的临床分期,S100A2、S100A4 mRNA在Ⅱ期与Ⅲ期中的表达量均高于Ⅰ期;S100P mRNA在Ⅲ期中的表达量高于Ⅰ期。(4)根据有无淋巴结转移,三者mRNA在有淋巴结转移癌组织中的表达量均高于无淋巴结转移的癌组织。(5)根据有无静脉癌栓,S100A4 mRNA在有静脉癌栓的癌组织中的表达量高于无静脉癌栓的癌组织。结论S100A4、S100A6、S100P在NSCLC中表达增加,尤其是在有淋巴结转移及TMN分期越高的癌组织中表...     

miRNA-21在支气管哮喘患儿血清及哮喘小鼠模型肺组织中表达上调

目的探讨miRNA-21在支气管哮喘患儿外周血淋巴细胞及支气管哮喘小鼠模型肺组织中的表达,观察其靶基因PTEN在哮喘小鼠模型肺组织中的表达变化。方法应用real-time PCR方法检测支气管哮喘患儿与正常儿童外周血淋巴细胞miRNA-21的表达,卵蛋白致敏方法建立支气管哮喘小鼠模型,肺泡灌洗液(BALF)细胞计数,HE染色观察气道炎症。应用real-time PCR法检测哮喘组小鼠与对照组小鼠肺组织miRNA-21及其靶基因PTEN的表达,Western blot方法检测哮喘小鼠与对照组小鼠肺组织PTEN蛋白的表达。结果支气管哮喘患儿外周血淋巴细胞miRNA-21表达水平显著高于正常儿童(P0.01)。哮喘小鼠BALF中细胞总数及嗜酸性粒细胞数及肺组织炎症细胞浸润显著高于正常对照组,哮喘组小鼠肺组织miRNA-21mRNA表达水平显著高于正常对照,PTEN mRNA与蛋白水平明显低于正常对照组(P0.01)。结论 miRNA-21在支气管哮喘患儿及支气管哮喘小鼠模型中高表达,表明其可能参与支气管哮喘的发病机制。     

Schizophrenia in a North Swedish geographical isolate, 1900–1977. Epidemiology, genetics and biochemistry

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.     

HLA in North Colombia Chimila Amerindians

HLA-A,-B,-C,-DRB1 and -DQB1 alleles have been studied in Chimila Amerindians from Sabana de San Angel (North Colombian Coast) by using high resolution molecular typing. A frequent extended haplotype was found:HLA-A*24:02-B*51:10-C*15:02-BRB1*04:07-DQB1*03:02 (28.7%) which has also been described in Amerinndian Mayos Mexican population (Mexico, California Gulf, Pacific Ocean). Other haplotypes had already been found in Amerindians from Mexico (Pacific and Atlantic Coast), Peru (highlands and Amazon Basin), Bolivia and North USA. A geographic pattern according to HLA allele or haplotype frequencies is lacking in Amerindians, as already known. Also, five new extended haplotypes were found in Chimila Amerindians. Their HLA-A*24:02 high frequencies characteristic is shared with aboriginal populations of Taiwan; also, HLA-C*01:02 high frequencies are found in New Zealand Maoris, New Caledonians and Kimberly Aborigines from Australia. Finally, this study may show a model of evolutionary factors acting and rising one HLA allele frequency (-A*24:02), but not in others that belong to the same or different HLA loci.     

The universal muscular chamber. A basic unit of the genitourinary, cardiovascular, gastro-intestinal, skeletal, cutaneous, respiratory and other systems, endocameral hypertension; and spasm, the key to their idiopathic diseases and arthropathies

Starting with the integument, we see many organs are contractile sacs or multiples thereof, which tubes or bags constitute the major part of the entire body. Recognition of this basic unit and its characteristics sheds new light, individually and collectively, on many disorders previously considered unrelated. Muscular tears and perforations develop in the walls of these chambers, being no way peculiar to those organs, wherein, hydrochloric acid occurs. So, it is not necessary to explain the absence of excessive acid from patients who exhibit holes in the gastric, uterine, aortic, duodenal, rectal, pulmonary, retina, and other walls. Muscle, not acid is the great common factor relating idiopathic disorders in the gastrointestinal tract to each other and to similar diseases in other systems. When the units are linked together, the lesions tend to appear as arthropathies, i.e. at the joints. Rephrasing common-place observations, frees us from conventional, conceptual cul-de-sacs. An observation is only as good as its interpretation, so all possibilities must be considered, otherwise, we will remain blinded by our misconceptions.     

Der Einfluß von Nahrungsmitteln und Rauchen auf die klinisch-chemische Diagnostik von Phäochromozytom,Neuroblastom und Karzinoid-Syndrom

Zusammenfassung Der Einfluß von verschiedenen Nahrungsmitteln auf Methoden zur Bestimmung von Adrenalin (AD), Noradrenalin (NA), Vanillinmandelsäure (VMS), Metanephrinen (MN), Homovanillinsäure (HVS) und 5-Hydroxyindolessigsäure (5-HIE) im 24 h-Harn zur Diagnose des Phäochromozytoms bzw. Karzinoid-Syndroms wurde untersucht. Die in die Untersuchung einbezogenen Nahrungsmittel waren: Tee, Kaffee, Mandeln, Ananas, Käse, Walnüsse, Vanillepudding, Bananen, Tomaten und Milchschokolade. Außerdem wurde der Einfluß des Zigarettenrauchens auf die Bestimmung von AD, NA, VMS und MN untersucht.Walnüsse führten zu einer starken Erhöhung der 5-HIE-Ausscheidung. Bananen erhöhten die Ausscheidung von AD, NA, VMS, MN und 5-HIE. Kaffee und Ananas bewirkten eine geringe Zunahme der MN-Werte. Rauchen von 20–30 Zigaretten/Tag beeinflußte keine der vier Variablen.Wenn die beschriebenen Methoden benutzt werden, sollte lediglich auf den Verzehr von Bananen und Walnüssen vor und während der Harnsammelperioden verzichtet werden, da die oberen Normgrenzen im Harn überschritten werden könnten. Ein Verzicht auf Kaffee und Ananas in normalen Mengen ist nicht erforderlich. Es besteht kein Anlaß, weiterhin die bisherigen umfangreichen Restriktionen der übrigen Nahrungsmittel beizubehalten.     

Renal dysplasia and asplenia in two sibs

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.     

A comparative study of the effects of dimebon,obsidan, finoptin,and cordaron on the functional state of ischemic focus and size of necrotic zone in experimental myocardial infarction

Dimebon, an antihistamine agent, exerts a moderate antianginal effect, improving the function of ischemic focus in the myocardium and decreasing the necrotic zone in experimental myocardial infarction. Dimebon is less active than obsidan, finoptin (except for the size of the necrotic zone), and cordaron. Translated fromByulleten' Eksperimental'noi Biologii i Meditsiny, Vol. 122, No. 12, pp. 642–644, December, 1996     

Effects of sex steroid hormones on lipid peroxidation and glutathione antioxidant system in rat skin

Effects of estradiol and testosterone on the intensity of lipid peroxidation and contents of glutathione redox system components in the dermis and epidermis of rat skin were studied. Only estradiol induced considerable dose-dependent and tissue-specific biphasic antioxidant effects on the skin. Translated fromByulleten' Eksperimental'noi Biologii i Meditsiny, Vol. 128, No. 12, pp. 663–666, December, 1999     

Adhesion and growth of CaCo2 cells on surface-modified PEEK substrata

A series of surface-functionalized poly(ether ether ketone) (PEEK) films has been prepared by selective wet-chemistry; they are hydroxylated polymer (PEEK-OH) obtained by reduction, aminated polymer (PEEK-[]-NH2) prepared by coupling a diisocyanate reagent to PEEKOH (PEEK-[]-NCO) followed by hydrolysis, and carboxylated and aminocarboxylated polymers (PEEK-[]-GABA and PEEK-Lysine) resulting from the coupling of aminoacids to PEEK-[]-NCO. The aminated and carboxylated substrata promoted the adhesion and growth of CaCo2 cells in the presence of serum. Fibronectin (FN), an extra-cellular matrix protein, has been covalently fixed and/or adsorbed on various PEEK substrata, in the presence or not of a polymeric surfactant (Pluronic F68). The performances of the FN-grafted substrata (PEEK-[]-FN(1) and PEEK-[]-FN(2)) were significantly higher than those of reference substrata simply coated with FN (PEEK-OH(+FN)(1) and (2), PEEK-[]-NH2(+FN)(1) and (2)), considering the adhesion and spreading of CaCo2 cells in the absence of serum. Moreover, the stability of the adherent cells on the FN-adsorbed substrata dramatically depended on the experimental conditions applied during the PEEK coating with FN.